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Open Access Article
1 - Recombination phenomenon in polyethylene under space charge dynamics and its effects on the external current evolution
Imed Boukhris Amal Gargouri Ezzeddine Belgaroui Ali Kallel -
Open Access Article
2 - Identification and Prioritizing of Exporting Target Markets for Iran’s High Density Polyethylene (HDPE)
A. Hajiha M. Haghighi Kaffash M. ManianRecognition and prioritization the target markets for special goods is must to establish the efficient marketing strategy. This will save investments of exporters who want to make a continued presence in markets. On the other hand in export programming fi MoreRecognition and prioritization the target markets for special goods is must to establish the efficient marketing strategy. This will save investments of exporters who want to make a continued presence in markets. On the other hand in export programming field it can play a valuable leading rule for authorities to establish trade strategies and dual trade negotiations. This research as its title says “Identification and prioritizing of exporting target markets for high density polyethylene (HDPE)” have decided to prioritize the markets by their attractiveness via suitable indexes which are available and contains the expert’s view, resource demand, capabilities and objectives of Iranian petrochemical commercial company. In reality final destination of this research is that it maps correct movement of HDPE in target markets by observing objectives, resources and organization capabilities. The method used is that we gather the information statistics at the first, and then refine them by using import potential indexes and statistical techniques. we start up to recognize the most important indexes for evaluating market attractiveness by gathering the related industry expert view to prioritize target markets. Finally by using of this indexes and techniques of numerical taxonomy and factor analyzing and relying on given statistics and informations by international trade center, we prioritize the target markets of HDPE. The result of this research shows that the markets which are better for exporting Iran HDPE after china and Hong Kong that are two evident markets for this product are Ukraine, Turkey, Spain, Malaysia, Greece, USA, Pakistan, Indonesia and Poland. Manuscript profile -
Open Access Article
3 - Investigation of the effect of compatibilization of oxidized polypropylene in molten phase on the mechanical, physical, and morphological properties of reed plant flour-high density polyethylene composite
Mohammad Shamsian Mohammad Dahmardeh Ghalehno Fatemeh Dehdast Seyedeh Rahil ChalakehThis study aimed to investigate the possibility of making reed plant flour-high density polyethylene composite usingoxidized poly-propylene as a compatibilizer. For this purpose, reed plant flour, high density polyethylene, and oxidizedpoly-propylene compatibilizer in t MoreThis study aimed to investigate the possibility of making reed plant flour-high density polyethylene composite usingoxidized poly-propylene as a compatibilizer. For this purpose, reed plant flour, high density polyethylene, and oxidizedpoly-propylene compatibilizer in the specified value were mixed into the internal mixer for 6 min and after that, theresulting amorphous materials turned to the granules using a laboratory mill. Finally, the granules turned to reed-plasticplates using a hot press. Mechanical tests such as bending and tensile resistances and their modulus and physicalproperties such as water absorption and thickness swelling in 2 and 24 h were measured. A fourier transform infraredspectroscopy machine was used to check the modification of oxidized poly-propylene and the morphology of thecomposites was studied by electron microscopy images. The results demonstrated that with increasing thecompatibilizer, the mechanical properties were linearly increased, while the water absorption and thickness swellingwere decreased. Electron microscopy images showed that improved adhesion at the interface between the reed plantflour and polymer fibers. The Fourier-transform infrared spectroscopy also showed that due to the oxidation ofpolypropylene, hydrophilic regions are formed in it. Manuscript profile -
Open Access Article
4 - Prediction of the structural and spectral properties for L,L-ethylenedicysteine diethylester (EC) and its complex with Technetium-99m radionuclide
Mehdi Nabati -
Open Access Article
5 - The Effect of Different Auxiliary Collector in Flotation of Phosphate Ore
Melina Seyed Momen Makan Etefagh Amir Hassanjani Roshan Hassan Koohestani -
Open Access Article
6 - Adsorption of Methylene Blue Dye from Aqueous Solution by Using Gamma Alumina Nanoparticles
gholamali haghdoost -
Open Access Article
7 - Kinetic Spectrophotometric Method for Determination of S032- Using Methylen blue
A. Mohammad Dehqan M. Reza Shishehbore N. Nasirizadeh -
Open Access Article
8 - Synthesis of TiO2 nanoparticles in pure 2-hydroxyethylammonium formate room temperature ionic liquid and investigation of its photocatalytic properties
Mohammad Khodadadi Moghaddam Fatemeh Fallah Iri Sola -
Open Access Article
9 - Rapid Determination of Chromium (M)lli Natural Water and Industrial Effluents Using Kinetic Speetrophotometric Method
AA. Reza Shishehbore Mohammad Saber- Tehrani Hassan Bagheri Navid Nasirizadeh -
Open Access Article
10 - Removal of methylene blue dye by application of polyaniline nano composite from aqueous solutions
M. Banimahd Keivani K. Zare H. Aghaie R. Ansari -
Open Access Article
11 - Design and Evaluation of a Mercury (II) Optode Based on Immobilization of 5, 6 Di methyl -1- (4 methyl benzyl) -2- para tolyl-1H-benzimidazole (DMBPTBI) on a Triacetylcellulose Membrane and Determination in Various Samples
A. Mosadeghei Fard G. H. Vatankhah -
Open Access Article
12 - Partitioning Studies of Alpha-amylase in Aqueous Two Phase System Composing of Polyethylene Glycol and Tri-Sodium Citrate
مریم Karimi N. Hadidi Gh. Pazuki Sh. AbdolrahimiIntroduction: One of the scenario for separation of biotechnology products is the application of aqueous two-phase systems (ATPS) rather than traditional extraction by using solvent. The ATPSs are applicable method for separation and purification of biomolecules mixture MoreIntroduction: One of the scenario for separation of biotechnology products is the application of aqueous two-phase systems (ATPS) rather than traditional extraction by using solvent. The ATPSs are applicable method for separation and purification of biomolecules mixture. The ATPS can be applied for protein purification of biomolecules from suspension broth. The goal of the present research is the study of partitioning of -amylase in polymer-salt aqueous two-phase system composed of polyethylene glycol with molecular weight of 1000 and tri-sodium citrate salt as a biocompatible salt. Materials and Methods: The aim of this research is to study partitioning of α-amylase enzyme in an aqueous two phase system. The system consists of polyethylene glycol (PEG) with molecular weight of 1000 and tri-sodium citrate that is a biocompatible salt. Results: The results for partitioning of enzyme in ATPS has been modeled and statistically analyzed; and indicated that the partition coefficient of -amylase in the system has the maximum amount of 2.681. Conclusion: In this research it has been proved that ATPS components concentration has an effect on the enzyme partition coefficient. Using experimental results, -amylase has a great tendency to be placed in the PEG rich phase. Manuscript profile -
Open Access Article
13 - A Study on the Effect of Nanosilicate-Based Coatings on Storage Life of Pomegranate Cultivar Malas-E-Saveh
A. Bekran E. Seifi F. VarastehIntroduction: The high nutritional and medicinal values and the increasing production anddemands, it is important to control the factors affecting the quality of pomegranate fruitduring storage. Regarding the understanding of how to store pomegranate fruit, it would bep MoreIntroduction: The high nutritional and medicinal values and the increasing production anddemands, it is important to control the factors affecting the quality of pomegranate fruitduring storage. Regarding the understanding of how to store pomegranate fruit, it would bepossible to offer this product at local and international markets for a long duration with highquality.Materials and Methods: In this study, the effect of nano silicate-based polyethylene andpolypropylene on the storage life of pomegranate fruit (cultivar Malas-e-Saveh) has beenstudied in a completely randomized factorial design. The treated fruits were stored in commonstorage for two and four months period. Qualitative and quantitative characteristics of fruitswere measured using the standard methods of analysis.Results: The results showed that the nano-based polyethylene and polypropylene couldmaintain the highest amount of moisture in the skin (75.72% and 73.14%, respectively) ascompared to the control (26.64%) at the end of storage period. These coating treatments alsomaintained the highest amount of aril moisture (76.88%) as compared to the control(71.09%). After storage period, the nano-based polypropylene showed the highestconcentrations of phenolic compounds (883.54 mg GAE/100 ml), flavonoids (487.71 mgGAE/100 ml) and anthocyanins (11.69 mg C3GE/100 ml) as compared to the control (649.76and 437.56 mg GAE/100 ml, and 7.9 mg C3GE/100 ml, respectively); although the normalcoating treatments showed less influence. Nano-based coating treatments also decreased thechanging rate of ascorbic acid but did not have any significant influence on pH and EC.Conclusion: The application of nano-based polyethylene and polypropylene treatments isrecommended to improve the keeping quality of pomegranate fruit during storage. Manuscript profile -
Open Access Article
14 - Evaluation of the Effect of Polyethylene Coating Based on Silver Nanoparticles on Increasing the Shelf Life, Qualitative and Microbial Parameters of Wheat Germ
M. Darab Sh. Shahriari H. MozafariIntroduction: It is possible to increase the shelf life and maintain the quality of wheat germ during storage by using suitable packaging. One of the new technologies considered by researchers is the use of packaging based on nanoparticles.Materials and Methods: In this MoreIntroduction: It is possible to increase the shelf life and maintain the quality of wheat germ during storage by using suitable packaging. One of the new technologies considered by researchers is the use of packaging based on nanoparticles.Materials and Methods: In this study, wheat germs were packaged in polyethylene packages containing silver nanoparticles, and the effect of the packaging on the quality characteristics and shelf life of wheat germ were determined. In this research work, at determining the most optimal conditions for the packaging of wheat germ, the effects of weight percent (wt%) of nanosilver (0, 3, and 5%), time of storage (0, 5, and 10 days), and three different temperatures (2, 4, and 6 0C) on the shelf life of wheat germ have been studied.Results: The results showed that temperature, storage time, and concentration of nanosilver in polyethylene packaging had significant effects on moisture, pH, and enzyme activity of wheat germ. Experimental data indicated that the storage time of wheat germ increased by increasing the concentration of nanosilver from 3% to 5% and by decreasing temperature from 6 ° C to 2 ° C for ten days. Nanoparticle packages were significantly (P <0.05) able to reduce mold growth in wheat germ.Conclusion: Based on the results, it might be concluded that the application of films based on silver nanoparticles increases the shelf life of wheat germ. Wheat germ had the highest shelf life in packaging with 5% silver nanoparticles at 2 ° C and was selected as the selected sample. Manuscript profile -
Open Access Article
15 - Evaluation of the Migration of Antimony from Polyethylene Terephthalate (PET) Plastic Used for Verjuice and Lemon Juice Packaging
Z. Didar -
Open Access Article
16 - Synthesis and Characterization of Silver Nanocomposite as a Food Packaging
M. Pooyamanesh H. Ahari A. A. Anvar G. Karim -
Open Access Article
17 - Comparative Study of Polyethylene and Polyamide Packaging Containing Silver Nanoparticles in Reduction of Meat Products (Mince Meat) Microbial Load
M. Abbasi H. Ahari M. Tabari -
Open Access Article
18 - Methylene blue Adsorption from Aqueous Solution using magnetite-oak adsorbent
Farhad Salimi Sarie PireBackground and objective: Each year about billion tons of dyes from textile and dyeing industry are discharged in the wastewater, which they are the most dangerous chemicals. Then removing this dyes from wastewater requires proper treatment before being released into th MoreBackground and objective: Each year about billion tons of dyes from textile and dyeing industry are discharged in the wastewater, which they are the most dangerous chemicals. Then removing this dyes from wastewater requires proper treatment before being released into the environment. The aim of this study is to evaluate and determine the possibility of using absorbent obtained from the Fe3O4-Oak as a low-cost adsorbent for the removal of methylene blue from aqueous solution. Material and Methodology: FTIR analysis was used to investigate the presence of magnetite iron in the oak structure. In these tests, a batch system was used for the absorption process. The effect of pH, adsorbent dosage, and initial concentration of dye and time as key parameters were evaluated. Also, the isotherm models were used to study the experimental adsorption data. Findings: The results that increasing pH increases the removal rate and the highest adsorption was obtained at pH 7. The Langmuir, Freundlich, temkin and Dubinin–Radushkevich isotherm models were used to evaluate experimental data and obtained results indicated that the Langmuir isotherm and Dubinin–Radushkevich models is better than other models with data obtained. Finally, the results of this study indicate that used absorbent have high efficiency for removal of methylene blue. The pseudo-second-order kinetic model well depicted the kinetics of dyes adsorption on adsorbent. Discussion and Conclusion: This study has been showed that the present adsorbent has a good case for removing dye from wastewater and also, having the magnetic property of the adsorbent will cause more rapid regeneration. Manuscript profile -
Open Access Article
19 - Experimental and Numerical Study on Leakage in Orifices of High-Density Polyethylene Pipe
Seyed Ali Sadr-Al-Sadati Mohammad Reza Jalili GhazizadehBackground and Objective: One of the most effective methods of coping with leakage in water distribution networks is pressure management. Therefore, a proper understanding of leakage behavior and its relationship with pressure variations can play a significant role in w MoreBackground and Objective: One of the most effective methods of coping with leakage in water distribution networks is pressure management. Therefore, a proper understanding of leakage behavior and its relationship with pressure variations can play a significant role in water loss control. The use of high-density polyethylene (HDPE) pipes has increased in recent years in water distribution networks so that in some rural area and small cities, these pipes have been utilized only. The aim of this study is to investigate the leakage behavior of orifices in HDPE pipes. Method: In the present study, the leakage behavior of polyethylene pipes has been investigated numerically and experimentally. In this study, the effect of temperature as one of the main factors on leakage behavior has been considered. Findings: The results showed that the Torricelli's classic relationship for the orifices can be used and the amount of leakage exponent for the orifices is approximately 0.5. This study shows that the discharge coefficient of the outflow from the orifices is dependent on some parameters such as Reynolds number, the thickness of pipe wall, orifice diameter, surrounding environment and orifice deformation. Discussion and Conclusion: The assumption of no deformation for the orifices in HDPE pipes with increasing pressure, particularly at high temperatures, is not necessary true. The symmetry state of the orifices in low-elastic pipes is removed with the pressure increase, due to the distribution of stress at the opening and also the effect of the Poisson coefficient, thereby reducing the discharge coefficient. Manuscript profile -
Open Access Article
20 - Evaluation of cumin stem powder efficiency in Methylene blue removal from aqueous solutions
Somaye Rahdar Morteza Ahmadabadi Edrise Bazrafshan Mahmoud TaghaviMethylene blue (MB) is a most common paint for dying and it can cause eye burns, breathingproblem, heart rate increasing, nausea, diarrhea, and vomiting, gastritis, shock, cyanosis, jaundice,quadriplegia, and tissue necrosis in humans. In this study, cumin stem powder h MoreMethylene blue (MB) is a most common paint for dying and it can cause eye burns, breathingproblem, heart rate increasing, nausea, diarrhea, and vomiting, gastritis, shock, cyanosis, jaundice,quadriplegia, and tissue necrosis in humans. In this study, cumin stem powder has been used as a lowcost adsorbent for the removal of Methylene blue dye from aqueous solutions.In this experimental study, the efficiency of cumin stem powder in removal of methylene blue and theeffect of effecting operating parameters such as pH (2-12), reaction time (5-210 min), adsorbentdosage (0.1-2 g/l) and initial concentration of dye (10-100 mg/l) on color removal from syntheticwastewater were studied.The results showed that the maximum removal efficiency of methylene blue 93% was achieved atoptimum condition: pH 11, reaction time 90 min, adsorbent dosage 0.5 g/l and initial dyeconcentration 100 mg/l. The results of isotherm study revealed well fitting of the experimental datawith Freundlich (R2=0.9913).According to results of this study, it was found that the cumin stem powder has a high capacity toremove methylene blue dye from aqueous solution and textile industry wastewater. Manuscript profile -
Open Access Article
21 - Carbonic anhydrase activity investigation in the present of Sodium oxalate and Ethylendiamine
Yoones moosavi Azadeh Hekmat Mahdi AlijanianzadehIntroduction: Carbonic anhydrases are ubiquitous zinc containing metalloenzymes which catalyze the interconversion of bicarbonate and CO2. This enzyme is involved in various vital physiological processes related to respiration, renal acidification, pH homeostasis, elect MoreIntroduction: Carbonic anhydrases are ubiquitous zinc containing metalloenzymes which catalyze the interconversion of bicarbonate and CO2. This enzyme is involved in various vital physiological processes related to respiration, renal acidification, pH homeostasis, electrolyte secretion, calcification, neurotransmitter and some biosynthetic reactions. In this study the inhibitory effects of sodium oxalate and ethylene diamine on carbonic anhydrase activity were studies. Methods: The enzyme activity were measured in the presence and absent of ethylene diamine and sodium oxalate in various concentrations. The initial rates were measured in each assay. Then the kinetics parameters and IC50 were measured. Results: The results of double reciprocal lineweaver-burk plots showed the combination inhibitory effect on carbonic anhydrase activity for ethylene diamine and uncompetitive inhibitory effect on carbonic anhydrase activity for sodium oxalate. Furthermore, the Km, Vmax, IC50 and Ki displayed that sodium oxalate is stronger inhibitor than ethylene diamine. Conclusion: Altogether, due to essential role of carbonic anhydrase in many physiological processes, it is important to consume sodium oxalate and ethylene diamine very cautiously. Manuscript profile -
Open Access Article
22 - Production of Ethylene Glycol Diacetate Ester Using a Heterogeneous Titanium (IV) Isopropoxide Catalyst: Response Surface Methodology
Borna Bayat Kambiz Tahvildari Amin Bazyari Alireza Hemmati -
Open Access Article
23 - The Glycolysis of Poly (ethylene terephthalate) Waste:Recovery of Terephthalic Acid by Magnetic FeO@APTS Nanoparticle
Mir Mohammad Alavi Nikje Elmira Ghamari Lida Sarchami Seyedeh Leila Rahmani Andabil -
Open Access Article
24 - Effect of Clay Network Formation on Flame Retardancy of Polyethylene terephthalate/montmorillonite Nanocomposites
Sima Habibi Monasadat Saket -
Open Access Article
25 - Uncatalyzed Synthesis of Arylmethylene[bis(5,5-dimethyl-3-hydroxy-2-cyclohexene-1-ones)] in Hot Water by Domino Knoevenagel/Michael Reactions
Enayatollah Sheikhhosseini Malihe Faryabi -
Open Access Article
26 - The investigation of Allelopathic potential of 70 wheat (Triticum aestivum) cultivars on germination and seedling growth of volunteer canola (Brassica napus)
Narges Mohamadi Elias Soltani Mostafa Oveisi Hossein RamshiniAllelopathic effects of plant can be one of the best ways to reduce the applying of herbicides which are high costly to register and have environmental effects. Therefore, the aim of this study was to investigate the allelopathic effects of wheat cultivars and to identi MoreAllelopathic effects of plant can be one of the best ways to reduce the applying of herbicides which are high costly to register and have environmental effects. Therefore, the aim of this study was to investigate the allelopathic effects of wheat cultivars and to identify the ability of them to control weeds. a field and laboratory experiment was conducted in Research Farm and Seed Technology laboratory of Aburaihan Campus, University of Tehran, during 2015-16. Seeds of 70 wheat cultivars were sown at 600 square meters of Research Farm and samples were taken for bioassay at the tillering stage. To separate the impact of allelopathic extract and osmotic potential of the extracts, different solutions were made with the same osmotic potential for each extract. Then, experiments simultaneously were conducted to investigate the effects of extract and osmotic potential on germination of canola. The results of separations of allelopathic and osmotic potential effects of extractions showed that the inhibition of canola germination is related to allelopathic effects and not osmotic potential of extraction (PEG). Results indicated that allelopathic effects of wheat cultivars had slightly increased during the releasing period of cultivars from 1940 until now, but this increase was not significant. This shows that breeders had not attention to allelopathy of wheat cultivars during breeding programs. Results indicated that there were some cultivars with high allelopathy and it is possible to include them in breeding programs to produce cultivars with high potential of weeds control. Manuscript profile -
Open Access Article
27 - Germination modeling of Eryngium caeruleum seeds with hydro thermal time model
Mohammad Lotfi asle giglo Mostafa Oveisi Hamid Rahimian- mashhadi Behnaz Pourmorad kaleibar Mohammad Hossein NaeimiThis study was conducted to evaluate the effect of temperature and moisture on germination of Eryngium caeruleum seeds as factorial experiment in a completely randomized design with three replications at weed science laboratory, college of agriculture and natural resour MoreThis study was conducted to evaluate the effect of temperature and moisture on germination of Eryngium caeruleum seeds as factorial experiment in a completely randomized design with three replications at weed science laboratory, college of agriculture and natural resources, university of Tehran. Factors were seven temperatures (5, 10, 15, 20, 25, 30 and 35°c) and seven levels of moisture (0, -2, -4, -6, -8, -10 and -12 bar) and hydro thermal time model used for description of Eryngium caeruleum germination. Germination parameters including base temperature (Tb), optimum temperature (To), the minimum moisture needed for start of germination (Wpb), decreasing coefficient (b) and standard deviation (Sigma) were obtained 2.39, 23.52, -0.93, 0.13 and 0.34 respectively, affected by different levels of temperature and moisture by using hydro thermal time model. The results also showed that germination percentage and rate increased up to -4 bar in base temperature and these germination characteristics reached to their highest level in optimum temperature. According to the results of this study, it can be said that the seeds of Eryngium caeruleum do not have resistance to the water stress at very low and very high temperatures, and have the maximum resistance at 20°c. Manuscript profile -
Open Access Article
28 - Application of spectroscopic methods for structural analysis of monoclinic bismuth vanadate nanoparticles (BiVO4) with different morphologies in the degradation of Rhodamine B dye
majid mozaffari omid niazmandIn this Research, BiVO4 nanoparticles using the templates of acrylamide, tryptophan, glycine and polyethylene glycol in same situation of pH and temperature for one pot reaction were prepared. The physicochemical properties of the samples were characterized by diffuse r MoreIn this Research, BiVO4 nanoparticles using the templates of acrylamide, tryptophan, glycine and polyethylene glycol in same situation of pH and temperature for one pot reaction were prepared. The physicochemical properties of the samples were characterized by diffuse reflectance spectroscopy (DRS), Raman spectroscopy, scanning electron microscopy (SEM), and X-ray diffraction spectrometer (XRD) techniques. According to the appropriate band gap range from a survey of DRS these compounds suitable for degradation organic pollutants under the terms of the visible light. Rhodamine B as one of the great stability of industrial pollution as well as contaminants was selected. All samples payoff in degradation and discoloration of Rhodamine B (Rh B) showed, but BiVO4 prepared by PEG in about 300 minutes، pH 7 and a concentration of 0.2 grams per liter of photocatalytic, the best performance was in the degradation and decolorization. In the process of photocatalytic degradation of Rhodamine B (Rh B) bismuth vanadate best performance was prepared by polyethylene glycol as a bridging agent, Due to the specific structure and a high level of photocatalytic ability is capable of more than the other compounds. Manuscript profile -
Open Access Article
29 - A Novel Technique for Keyhole-Less Reinforced Friction Stir Spot Welding of Polyethylene Sheets
Moosa Sajed S. M. Hossein Seyedkashi -
Open Access Article
30 - The Effect of Paclitaxel Polyethylene Glycol Solution on Hela Cells
Maryam Afshar Mahrouz DezfulianInroduction & ObjectivePaclitaxel (PTX) is one of the most effective chemotherapeutic agents for a wide spectrum of cancers, but its therapeutic benefit is often limited by its poor solubility in aqueous solutions and Cremophor El severe side effects. However, the aim o MoreInroduction & ObjectivePaclitaxel (PTX) is one of the most effective chemotherapeutic agents for a wide spectrum of cancers, but its therapeutic benefit is often limited by its poor solubility in aqueous solutions and Cremophor El severe side effects. However, the aim of this study is to develop highly water-soluble paclitaxel. For this purpose we prepared a new paclitaxel–poly (ethylene glycol) (PEG) conjugates that were characterized and evaluated for their in vitro cytotoxicity.Materials and Methods:The cell lines used were HeLa and L. Both cell lines were maintained in RPMI 1640 medium containing 10% fetal bowin serum and 1% antibiotics. Various dilutions of PTX-PEG conjugate by physical method were prepared and in vitro cytotoxicity and drug uptake were determined by MTT assay on HeLa and Lcells. Data were expressed as the means of three separate experiments, and were compared by analysis of variance (ANOVA) and Tukey's multiple comparison test of SPSS software.ResultsQuite homogeneous solution was obtained and paclitaxel was completely dissolved. Using MTT assay was determined that a lower dose of paclitaxel nanoparticle have a greater efficacy on cancer cells compared with PTX/ Cremophor EL. (* = P-valueConclusion: The new conjugate formulation exhibited a high efficiency of antitumor activity and low toxicity and can be used as a drug delivery vehicle for cancer therapy. Manuscript profile -
Open Access Article
31 - Comparison of the Efficiency of Iodine Solution, Methylene Blue and Potassium Permanganate for Disinfection of Stellate Sturgeon Acipenser stellatus(Pallas, 1771) Eggs
Abdolali Rahdari Bahram Falahatkar Hossein Mohammadi Samad DarvishiInroduction & Objective:Considering the importance of stellate sturgeon fish as endangered species, the artificial breeding plays an important role in the restoration of natural resources of this fish in the Caspian Sea. One of the essential activities in the incubation MoreInroduction & Objective:Considering the importance of stellate sturgeon fish as endangered species, the artificial breeding plays an important role in the restoration of natural resources of this fish in the Caspian Sea. One of the essential activities in the incubation period is disinfection of eggs, which if done correctly can increase survival and larvae production. Therefore, finding the best approach for disinfection of stellate sturgeon eggs is so necessary.Material and Methods:Eggs were artificially fertilized and subjected to a bath dip treatment in given concentrations of the above chemicals before being incubating. Prior to treatment, the eggs were splited into three disinfected groups (100 mg L-1 iodophor, 15 min; 20 mg L-1 potassium permanganate, 30 min exposure and 100 mg L-1 methylene blue; 2 hours and) and non-disinfected group (control). Then, the eggs were transferred to Yushchenko incubators for incubation. During the incubation period, fungal and dead eggs were separate and counted physically every day. After hatching, the numbers of larvae per box were counted separately.Results: Eggs that disinfected with iodine solution and methylene blue were less likely to fungal infection and their conversion to larvae was higher than eggs that disinfected with potassium permanganate and the control group.Conclusion: The study showed that using iodine solution to disinfect stellate sturgeon is more effective and easier than some other disinfectants. Manuscript profile -
Open Access Article
32 - THE EFFECT OF HYDROPHILIC EXTRACT OF MUSA SAPIENTUM ON ETHYLENE GLYCOLl-INDUCED RENA STONE IN MALE WISTAR RATS
samira babai norozi Parastoo Rahimi mehdi rahnemaInroduction & Objective:Prevention of kidney stone formation is one of the important issues in preventing kidney disease. Banana’s peel has antioxidant, anti-inflammatory and tissue repairing properties, and due to its alkaline properties, it increases citrate MoreInroduction & Objective:Prevention of kidney stone formation is one of the important issues in preventing kidney disease. Banana’s peel has antioxidant, anti-inflammatory and tissue repairing properties, and due to its alkaline properties, it increases citrate and decreases urinary calcium, urea and blood creatinine.Material and Method:In this study, 32 males of Wistar divided into 6 groups. Healthy control used only food and water, negative control group rats, used food, water, and 1% ethylene glycol solution. The control group 1, used food, water and solution of banana’s peel at concentrations of 100 mg / kg and 150 mg / kg orally. Experimental 1 used food , water, and 100 kg concentration of banana's skin extract solution with 1% ethylene glycol .Experimental 2 rats, used food , water, solution of banana's peel extract at concentration of 150 mg / kg with 1% ethylene glycol solution. At the end 24 urine, blood kidneys of samples were collected. Kidney tissue was histological examined with hematoxylin-eosin for accumulation of calcium oxalate.Results: Significant differences were observed in creatinine and blood uric acid in the negative control group compared to experimental 2.The highest urea levels in the blood were observed in the negative control Negative control had significant difference with experimental 1. Urea and urinary citrate in the negative control had significant difference compared to all groups. Urinary oxalate in the negative control a statistically significant difference was observed compared to healthy control .Also, the amount of crystals in total renal tissue between experimental groups 1 and experimental group 2 with negative control group and other groups significant statistical differences were observed (P <0.05). Renal histological examinations showed improvement of renal tissue .Conclusion: The results show the effectiveness of banana peel extract on preventing kidney stones and improving tissue complications due to ethylene glycol consumption by inhibiting the formation of calcium oxalate due to its antioxidant and anti-inflammatory properties. Manuscript profile -
Open Access Article
33 - The Effect of Hydroalcoholic Extract of banana’s peel (Musa spaientum) on Rena Stone induced by Ethylene Glycol in Female Wistar rats
Parastoo Rahimi Nastaran GhassempoorBackground and aim: Banana peel has antioxidant, anti-inflammatory, healing and tissue repair properties, and due to its alkaline properties, it increases citrate and decreases urinary calcium, urea, and blood creatinine. Material and Methods: In this study, the effect MoreBackground and aim: Banana peel has antioxidant, anti-inflammatory, healing and tissue repair properties, and due to its alkaline properties, it increases citrate and decreases urinary calcium, urea, and blood creatinine. Material and Methods: In this study, the effect of hydroalcoholic extract of banana peel on kidney stone disease induced by ethylene glycol was tested in 42 female Wistar rats in 6 groups in 31 days. Healthy control used only food and water, negative control group rats, used food, water, and 1% ethylene glycol solution. The control group 1, used food, water and solution of banana’s peel at concentrations of 100 mg / kg and 150 mg / kg orally. Experimental 1 used food, water, and 100 kg concentration of banana's skin extract solution with 1% ethylene glycol .Experimental 2 rats, used food , water, solution of banana's peel extract at concentration of 150 mg / kg with 1% ethylene glycol solution.. At the end of, blood of samples were collected for biochemical analysis.Results: The results showed that creatinine, uric acid, and urea increased in the blood of the negative control group, and for creatinine and urea the difference between negative control and healthy control and experimental control 2 was significant. In the uric acid factor, despite the increase in the negative control, the differences are not significant (P<0.05).Conclusion: The results show the effectiveness of banana peel extract on kidney stones caused by ethylene glycol by inhibiting calcium oxalate formation pathways due to its antioxidant, anti-inflammatory and antibacterial properties. Manuscript profile -
Open Access Article
34 - Preparation and Mechanical Properties of Compositionally Graded Polyethylene/Clay Nanocomposites
M.H Yas M Karami Khorramabadi -
Open Access Article
35 - Effects of Mulch type, Times and Tuber Burial Depth on Growth and Tuber Production of Purple Nutsedge(Cyperus rotundus L.)
Mohammad Roozkhosh behrouz KHALIL TAHMASEBI zabihollah Azami-Sardooei Hamid Reza Alizadeh farnaz fekrat Mehdi Rastgoo ahmad AeinPurple nutsedge (Cyperus rotundus L.) is a problematic weed in vegetables production systems in eastern and southeastern of Iran, To evaluate the different levels of polyethylene mulches, Tuber burial depths, and times on Management on purple nutsedge, a factorial exper MorePurple nutsedge (Cyperus rotundus L.) is a problematic weed in vegetables production systems in eastern and southeastern of Iran, To evaluate the different levels of polyethylene mulches, Tuber burial depths, and times on Management on purple nutsedge, a factorial experiment base on randomized complete block design with four replications, at Jiroft University Research Farm, was conducted, field experiments to investigate the effect of mulch type including, (one and two layer clear polyethylene film, one-layer clear polyethylene + hen manure, one layer black polyethylene and non-mulched as control), second factor was times application at three levels including (20, 40 and 60 days) and third factor tubers burial depths at three levels including (5, 15 and 25cm) on C. rotundus above and below ground growth were conducted. Results showed that two-layer clear polyethylene mulch provided greatest suppression of C. rotundus growth was observed in plots covered with 2-layer clear LDPE, at 60 days in all depths (5,15 and 25cm). However, one-layer clear mulch at 60 days in 5 cm depth and one-layer clear polyethylene + hen manure at 60 days in 5 and 15 cm depth, inhibited viability tubers significantly. But positive effect was not shown on the growth control of the period in the other treatment. Generally, the results showed that two factors of polyethylene mulches and period of solarization of have a direct effect on the control of purple nutsedge. Manuscript profile -
Open Access Article
36 - Performance of GO-Fe3O4-ZnO nanocomposite as a photocatalyst for removal of methylene blue and methyl orange in the presence of visible light
Hassan Molanezhad Farzaneh EbrahimzadehIn this paper, graphene oxide is applied as a substrate for the synthesis of the magnetic graphene oxide-zinc oxide nanocomposite. The prepared nanocomposite (GO–ZnO–Fe3O4) are characterized using Field emission scanning electron microscopy(FESEM) and vibrat MoreIn this paper, graphene oxide is applied as a substrate for the synthesis of the magnetic graphene oxide-zinc oxide nanocomposite. The prepared nanocomposite (GO–ZnO–Fe3O4) are characterized using Field emission scanning electron microscopy(FESEM) and vibrating sample magnetometer(VSM). The photocatalytic performance of the synthesized samples is evaluated according to the photodegradation of methylene blue and methyl orang as organic dyes pollutant. The results of studies on the removal of dye pollution with a UV-Vis spectrometer showed that the removal of methylene blue dye is done completely in a short time and in the presence of sunlight. One of the advantages of the above nanocomposite is its very cheap, convenient and cost-effective synthesis. Manuscript profile -
Open Access Article
37 - Synthesis and Physicochemical Characterization of New Amidic Derivative of Sodium Alginate
Shokouh Khodayar Mohammad Reza Shushizadeh Elham Tahanpesar Behzad Sharif Makhmalzadeh Haleh Sanaeishoar -
Open Access Article
38 - Polyethylene glycol embedded tribromide as an efficient and reusable catalyst for the library synthesis of nitrogen containing heterocycles
Sanny Verma -
Open Access Article
39 - The effect of polymer molar mass on the aqueous two-phase system containing Poly ethylene glycol dimethyl ether and ammonium sulphate and its application of this system in partitioning of iodine
Mohammed Taghi Zafarani–Moattar Hemayat Shekaari Tohid Hashemzadeh -
Open Access Article
40 - Polyethyleneimine-modified super paramagnetic Fe3O4 nanoparticles: An efficient, reusable and water tolerance nanocatalyst.
Hosein Hamadi Maryam Gholami Mehdi Khoobi -
Open Access Article
41 - Liquid–liquid equilibria of aqueous two phase system containing of PEGDME and (NH4)2 SO4 at different temperatures and its application in partitioning of lactic acid
Mohammed Taghi Zafarani Moattar Hemayat Shekaari Tohid Hashemzadeh -
Open Access Article
42 - Multivariate Analysis of Variance (MANOVA) and Multivariate Regression in Determining Thermal Conductivity of Nanofluid for Use in Mechanical Systems
Mohammad Reza Ghalani Moslem Barzegari Ashkan GhafouriStatistical methods are used in the analysis of all types of data. In this paper, using multivariate analysis of variance and multivariate regression, the data related to the thermal conductivity of nanofluids have been analyzed and the results of the two methods have b MoreStatistical methods are used in the analysis of all types of data. In this paper, using multivariate analysis of variance and multivariate regression, the data related to the thermal conductivity of nanofluids have been analyzed and the results of the two methods have been compared. A two-step method was used to prepare ethylene glycol-magnesium oxide nanofluid. In order to prepare the nanofluid by suspending the nanoparticles in the base fluid, an ultrasonic homogenizer was used. For this purpose, nanoparticles with diameters of 20, 50, and 100 nm in volume fractions of 0.25, 0.5, 0.75, 1, and 1.25% have been used at temperatures of 25, 30, 35, 40, 45, and 50 degrees Celsius. Transient hot wire method was used to measure thermal conductivity in different volume fractions. Then the obtained experimental values were analyzed using SPSS.26 software. The coefficient of determination and the graphs of the errors obtained in the two methods showed that when the independent variables are defined as grouped, the use of multivariate analysis of variance can better describe the dispersion of the thermal conductivity. Manuscript profile -
Open Access Article
43 - Application of deep neural networks in Geo-environmental Engineering
Masoud Samaei Maghsoud Jahani -
Open Access Article
44 - Removal of methylene blue with the help of surface adsorption by Fe3O4@GT magnetic nanocomposite
hossein abaastabar ali zandi ali saffarOne of today's environmental issues is the creation of sewage containing organic dyes by dyeing industries. These pollutants have caused many damages to humans and other creatures. In this project, Fe3O4@GT nanocomposite was synthesized by Fe3O4 magnetic nanoparticles a MoreOne of today's environmental issues is the creation of sewage containing organic dyes by dyeing industries. These pollutants have caused many damages to humans and other creatures. In this project, Fe3O4@GT nanocomposite was synthesized by Fe3O4 magnetic nanoparticles and tragacanth gum. tragacanth gum was used as an important and functional component to improve absorption speed. Then, with the help of this nanocomposite, the removal quality of methylene blue was checked. Conditions such as the amount of absorbent, the amount of methylene blue, the pH of the environment and the temperature of the environment were investigated in the quality of removal of methylene blue, and Taguchi method was used to find the optimal results. XRD, FTIR, DLS, SEM, and VSM were used for sample analysis. FTIR results proved the presence of functional groups of tragacanth hydrogel on the surface of nanoparticles. The particle size of the nanocomposite obtained by DLS method was 96.24 nm and the VSM value for the nanocomposite was 31.33 emu/g. The optimum condition of the adsorbent was in alkaline pH and the high amount of pollutant reduced the adsorption percentage. Increasing the ambient temperature improved absorption. It was found that Fe3O4@GT nanocomposite has a high adsorption performance on methylene blue with a removal rate of 86.4% after 4 hours. Manuscript profile -
Open Access Article
45 - Kinetic Study of photocatalytic removal of methylene Blue dye using Ag nanoparticles
پروین غربانی Arezu Ghadi Mosavi موسوی Ali MehrizadMethylene blue dye is the most common dye for dyeing cotton, wool and silk. Inhalation of this dye can cause respiratory distress and while direct exposure to it can also cause permanent eye damage, burning sensation in the exposed areas, Nausea and vomiting, excessiv MoreMethylene blue dye is the most common dye for dyeing cotton, wool and silk. Inhalation of this dye can cause respiratory distress and while direct exposure to it can also cause permanent eye damage, burning sensation in the exposed areas, Nausea and vomiting, excessive sweating and mental disorders. In this paper, silver nanoparticles was synthesized via a simple method. Various techniques such as FESEM, XRD, UV-Vis DRS were used to identify the morphology, structural composition and optical properties of synthesized silver nanoparticles. The results of UV-Vis DRS showed that the prepared silver nanoparticles effectively improved the efficiency of the visible light response in the process of photocatalytic degradation of methylene blue dye. The results of pseudo-first-order linear kinetics showed that the value of k increased with increasing of MB dye concentration from 0.0264 to 0.0614 min-1. In general, nano-silver synthesis showed a high potential in removing MB dye from aqueous solutions. Manuscript profile -
Open Access Article
46 - Investigation of Production of Aluminum Polychloride Sulfate, its Application in Water Treatment and its Comparison with Other Coagulants
Morteza GholizadehIn this study, the effect of various factors on the permeability of CO2 and O2 gases on light polyethylene can be investigated. temperature, gas pressure and polymer thickness factors affect the permeability of gases. Various models such as DSC model and a device with A MoreIn this study, the effect of various factors on the permeability of CO2 and O2 gases on light polyethylene can be investigated. temperature, gas pressure and polymer thickness factors affect the permeability of gases. Various models such as DSC model and a device with ASTM standard and barometric method were used in the measurements. the results of the mentioned models show that with increasing temperature, the coefficients of permeability and permeability and solubility increase. also, increasing the pressure reduces the passing coefficient by a certain amount. But after a certain amount, the increase in pressure does not work. also, increasing the pressure has no effect on the permeability coefficient. In the case of solubility coefficient, increasing to a pressure range reduces this coefficient, then reaches a constant value. Manuscript profile -
Open Access Article
47 - Analysis of the Strategic role of universities and scientific centers in the development of industrial clusters; Case Study of polyethylene industrial cluster of Kermanshah
Mehrdad Madhoshi Milad Moradi DizgaraniIndustrial Cluster is acoherent combination of specialists, venture capital, firms with superior technology and physical infrastructure that in the vicinity of universities, science and technology parks and research centers, and in a certain geographic area, produces kn MoreIndustrial Cluster is acoherent combination of specialists, venture capital, firms with superior technology and physical infrastructure that in the vicinity of universities, science and technology parks and research centers, and in a certain geographic area, produces knowledge oriented goods and services by a market-oriented management. this study is an attempt to examine the most important roles of universities and scientific centers in the development of polyethylene industrial cluster of Kermanshah. This study is an applied one according to the purpose and it is a descriptive survey according to the method. The research statistical population has consisted of managers of active firms in industrial cluster and industrial cluster polyethylene-related faculty members at universities in Kermanshah province, that the total population has been considered as sample. Also, the data collection tool is researcher made questionnaire. Statistical analysis was performed by SPSS and AMOS softwares. The findings suggest that universities and scientific centers due to high-quality laborforce, commercialization of technology and establishment of knowledge based firms are effective on the development of polyethylene industrial cluster of Kermanshah Manuscript profile -
Open Access Article
48 - Effect of Osmotic Stress on Seed Germination Indices of Nigella sativa and Silybum marianum
حمیدرضا Balouchi A. Yadavi M. Movahedi DehnaviEvaluation of medicinal plants to drought and salt stress tolerance, in an attempt to plant them under drought and saline regions, is of utmost importance. Environmental stresses, especially drought and salt, reduce the global crop yields more than other factors. Select MoreEvaluation of medicinal plants to drought and salt stress tolerance, in an attempt to plant them under drought and saline regions, is of utmost importance. Environmental stresses, especially drought and salt, reduce the global crop yields more than other factors. Selection of drought tolerant crops at germination stage, usually is, the fast and low cost method. In order to study the effect of osmotic stress on germination indices of black cumin and milk thistle, an experiment carried out in a completely randomized design with four replications at the Seed Technology Laboratoary of Yasouj University in 2008. Treatments were 0 (as control), -2.4, -4.8, -7.2 and -9.4 bar osmotic potentials created by using PEG 6000. Results showed that, decreasing of osmotic potential reduced speed of germination and its percentage, root and shoot lengths and dry matter in these two plants. Black cumin showed higher tolerance, to -4.8 bar osmotic potential, as compared to milk thistle. However, milk thistle showed higher tolerance to drought stress, up to this osmotic potential (-4.8 bar), compared to black cumin. Milk thistle had lower germination speed and percentage at higher drought stress as compared to black cumin. Generally, milk thistle showed better growth and survival than black cumin due to its higher root and shoot length and dry matter. Manuscript profile -
Open Access Article
49 - Effect of Salicylic Acid and Ethephon on Seed Germination and Seedling Growth of Wheat under Salt Stress
Soheyla Shakeri Fatemeh Saeid Nematpour Akbar Safipour AfsharWater or soil salinities are the most important factors that reduce the seed germination of plants. Ethephon can break seed dormancy in a variety of plants, such as cereals and speeds up germination. In some plants pretreatment of seeds with salicylic acid has increased MoreWater or soil salinities are the most important factors that reduce the seed germination of plants. Ethephon can break seed dormancy in a variety of plants, such as cereals and speeds up germination. In some plants pretreatment of seeds with salicylic acid has increased the germination percentage. To study effect of salicylic acid and ethephon on seed germination of wheat (Seivand cultivar) under salinity condition a factorial experiment in a completely randomized design with three replications was conducted at the Plant Research Laboratory of Neyshabur Branch of Islamic Azad University in 2011. Four salinity levels (0, 50, 100, 150 mM), three salicylic acid levels (0, 0.5, 1 mM) and four ethephon levels (0, 0.5, 1, 2 mM) were used. The results showed that at salinity condition seed germination rate and percentage, shoot and root length, their dry weight and α-amylase activity decreased and proline content increased. Pretreatment of seeds by salicylic acid increased seed germination percentage, some growth parameters, α-amylase activity and proline content under salinity condition. Moreover, pretreatment of seeds by ethephon decreased some growth parameters and increased proline content but its effect on germination and α-amylase activity were not significant. It seems that Salicylic acid as a plant growth regulator under salinity condition and ethephon convertion to ethylene, activated plant tolerance mechanisms to salinity condition and decrease damaging effect of salinity on seed germination and seedling growth of wheat. Manuscript profile -
Open Access Article
50 - The effect of fish powder using on wood plastic composite biodegradability
ali kazemiAs the use of wood plastic composites (WPC) in various industries has increased significantly and due to the high importance of environmental issues in industry and research and the fact that products made of petroleum polymers have too little biodegradability, it is im MoreAs the use of wood plastic composites (WPC) in various industries has increased significantly and due to the high importance of environmental issues in industry and research and the fact that products made of petroleum polymers have too little biodegradability, it is important to conduct research to improve and solve this environmental problem. Due to the high amount of volatile nitrogen, low quality fish powder is not used in the industry, and as a result, it can be use as cheap and biodegradable filler in wood plastic. In this research, the effect of fish powder amount, substrate type, and coupling agent (MAPE) amount on the physical characteristics of wood-plastic composite was investigated. The results showed that by increasing fish powder amount and decreasing coupling agent amount, the highest amount of degradability is obtained. Manuscript profile -
Open Access Article
51 - Effects of Apium graveolens extract on serum calcium and oxalate in ethylene glycol- induced kidney injury in male Wistar rats
Parisa Mehrparvar Akram Eidi Pejman Mortazavi Shahrbanoo OryanCelery (Apium graveolens) is a biennial plant, belonging to family Apiaceae. Various parts of celeryare used in hepatic and spleen disorders, brain disorders, body pain, and sleep disturbances. The present study was planned to investigate the effect of celery ethanolic MoreCelery (Apium graveolens) is a biennial plant, belonging to family Apiaceae. Various parts of celeryare used in hepatic and spleen disorders, brain disorders, body pain, and sleep disturbances. The present study was planned to investigate the effect of celery ethanolic extract on ethylene glycol induced kidney injury in male Wistar rats. Urolithiasis was induced in hyperoxaluric rat model by giving 0.75% ethylene glycol for 28 days. Animals were divided into 8 groups (n=6) including normal control, urolithiatic control (0.75% ethylene glycol in their drinking water), normal rats receiving celery extract at doses of 50, 100 and 200 mg/kg and urolithiatic rats receiving celery extract at doses of 50, 100 and 200 mg/kg intragastrically. At the end of the experiment (28 days), blood samples were collected by cardiac puncture and serum calcium and oxalate was analyzed. Statistical analysis was performed by one-way analysis of variance followed by Tukey post hoc test (p<0.05). Significant elevation of serum oxalate and reduction of serum calcium was observed in urolithiatic control rats compared with the normal control rats. Administration of celery extract at a dose of 200 mg/kg produced significant elevation in serum calcium and reduction in serum oxalate in urolithiatic rats. Thus, celery extract could ameliorate urolithiasis induced by ethylene glycol. Manuscript profile -
Open Access Article
52 - Synthesis of Nanostructured MnNiAPSO-34 Catalyst: Catalytic Properties and Performance
Parisa Sadeghpour Mohammad Haghighi -
Open Access Article
53 - Fabrication of high–strength alumina composite foams through gel–casting process
Sanaz Naghibi Elham Sheikhi -
Open Access Article
54 - Polyethylene Glycol Coated NiFe2O4 Nanoparticles Produced by Solution Plasma Method for Biomedical Applications
Masoud Shabani Ehsan Saebnoori Ali Hassanzadeh-Tabrizi Hamid Reza Bakhsheshi-Rad -
Open Access Article
55 - Palladium-Cobalt on Reduced Graphene Oxide as an Electro-catalyst for Ethylene Glycol Oxidation in Alkaline Medium: Synthesis and Electrochemical Performance
Hamid Asgari Somayeh Majidi -
Open Access Article
56 - Effect of premixing of spermidine and polyethylene glycol on germination and physiological and morphological activity in Triticum durum wheat with Salinity stress
Parvane RahdariIn order to effect of spermidine and polyethylene glycol pretreatment on germination and some physiological and morphological activity durum wheat under salinity stress a experiment with 20 treatments, three replications was conducted in 60 experimental units. Tre MoreIn order to effect of spermidine and polyethylene glycol pretreatment on germination and some physiological and morphological activity durum wheat under salinity stress a experiment with 20 treatments, three replications was conducted in 60 experimental units. Treatments included five levels of spermidine (0/ 02,0/ 05,0/ 1 and 0/15 mM) and four levels of polyethylene glycol (0- 2,- 4 and -5 bar). The results showed that the use of spermidine increased the relative weight contact of leaf (RWC), leaf area ratio, chlorophyll s and phenolic compounds . In this study, carotenoids content and leaf antioxidant activity decreased with increasing spermidine level and also had no statistically significant effect on germination. With increase of polyetylen glycol antioxidant activity, carbohydrates and total phenolics increased but decreased germination. Therefore, according to the above results, application of spermidine and polyethylene glycol as seed pre-treatments can have significant effects on physiological and morphological activities in stress conditions and increase plant potency under stress conditions. Manuscript profile -
Open Access Article
57 - Evaluation of drought tolerance in sesame (Sesamum indicum L.) genotypes using germination traits and indices under drought conditions
Mohammad Amin Baghery Seyed Kamal Kazemitabar Ali Dehestani Pooyan Mehrabanjoubani Hamid Najafi ZariniSesame as one of the most important oilseed crops has high industrial, food, and medicinal potentials. Drought stress challenges sesame production, especially at the germination and seedling stages. To screen sesame genotypes for drought tolerance at the germination sta MoreSesame as one of the most important oilseed crops has high industrial, food, and medicinal potentials. Drought stress challenges sesame production, especially at the germination and seedling stages. To screen sesame genotypes for drought tolerance at the germination stage, a factorial experiment was performed in a completely randomized design with 3 replications. The studied factors included 4 drought levels induced by polyethylene glycol (concentrations of 0%, 20%, 25%, and 30%) and 15 sesame genotypes. Based on the results of ANOVA, the effect of genotype, drought, and their interaction on all studied traits including germination rate, germination speed, vigor index 1 and 2, radicle length, plumule length, and seedling fresh and dry weight was significant (P<0.01). Significant reduction (P<0.05) was observed in all levels of stress compared to the control in the studied traits. Germination rate, radicle length, and plumule length (with 10%, 17%, and 18% reduction, respectively) showed less sensitivity to drought stress at weak level (20% concentration), while the most negative effect was obtained for vigor index 2, seedling dry weight and seedling fresh weight (with 52.5%, 47.3%, and 34.4% reduction, respectively). On the other hand, the highest decrease was observed in plumule length, vigor index 1 and 2 (98%, 97%, and 96%, respectively), under severe drought (30% concentration). The calculated drought tolerance indices of each trait were used for principal component analysis and biplot visualization. Thus, genotypes were divided into 5 categories based on tolerance. Dashtestan 2 and Darab 1 genotypes were selected as the most tolerant and Qaem, Yekta, Sudan, and Kerman genotypes were selected as the most sensitive genotypes. The findings of this study can be used in future studies and breeding programs of sesame for drought tolerance. Manuscript profile -
Open Access Article
58 - Investigation of the effect of packaging film, temperature and storage time on biochemical characteristics of Rosmarinus officinalis L.
Feryal Varasteh Azim Ghasemnejad Sahar ZamaniEffects of packaging film, temperature, and storage time on the biochemical properties of dried leaves of Rosmarinus officinalis L. were investigated in a factorial experiment based on a completely randomized design at Gorgan University of Agricultural Sciences and Natu MoreEffects of packaging film, temperature, and storage time on the biochemical properties of dried leaves of Rosmarinus officinalis L. were investigated in a factorial experiment based on a completely randomized design at Gorgan University of Agricultural Sciences and Natural Resources during 2017-2018. Plant samples were collected and shade-dried from the newly grown branches of eight-year-old plants in June. Then, the samples were packed in packaging films including control (without coating), polyamide 80, 90, and 120 µ, polyethylene 90 µ and common plastic, before they were stored at 4 ℃ and 25 ℃ for one year. The biochemical compounds of the plant were measured every three-months. Chlorophylls and carotenoids were measured using dimethyl sulfoxide method. Phenols, flavonoids, and antioxidant activity were assayed by Folin-Ciocalteu, aluminum-chloride, and DPPH method. Findings showed that chlorophylls and carotenoids decreased over time; however, 4 ℃ preserved the pigments better than 25 ℃. The highest phenol content (4.5 mg/g) was observed in common plastic after 6 months, and the highest flavonoids (2.87 mg/g) was observed in polyamide 90 µ and polyethylene 90 µ stored for 3 months at 4 ℃. Total phenols and flavonoids in treatments were 1.78 and 3 times higher than the samples without coating stored for 12 months at 25 ℃. The highest antioxidant activity was observed in all packages at the beginning of the experiment, and the antioxidant activity decreased by 30.8% after 12 months storage at 25 ℃ without coating. According to the findings of the study, in order to preserve the quality of dried rosemary leaves, they are recommended to be stored in polyamide 90 and 120 µ and polyethylene 90 µ at 4 ℃ for 3 months, because in these treatments, in addition to the increase in total phenols and flavonoids (1.2-1.3 times compared to the beginning of the experiment), the content of total chlorophylls, carotenoids, and antioxidant activity did not increase highly. Manuscript profile -
Open Access Article
59 - Investigation of performance of bimodal/functionalized mesoprorous silica nanoparticles on the adsorption of methylene blue from aqueous solution
Amir Vahid -
Open Access Article
60 - Preparation and Characterization of Curcumin-Silver Nanoparticle and Evaluation of the Effect of Poly Ethylene Glycol and Temperature
Parisa Adibzadeh Negar Motakef-Kazemi -
Open Access Article
61 - Response surface methodology analysis of the photocatalytic removal of Methylene Blue using a new Cu(II)-MOF
Zahra Mohseni nik Majid Ramezani Saeed Jamehbozorgi Tahere Momeni EsfahaniA novel metal–organic framework (MOF), with the formula [Cu(II)L]n (L= 4, 4′-diamino diphenyl sulfone), has been synthesized conventionally and hydrothermally methods and characterized by FT-IR, PXRD, EDX, and SEM techniques. The results MOFs were applied for photodegra MoreA novel metal–organic framework (MOF), with the formula [Cu(II)L]n (L= 4, 4′-diamino diphenyl sulfone), has been synthesized conventionally and hydrothermally methods and characterized by FT-IR, PXRD, EDX, and SEM techniques. The results MOFs were applied for photodegradation of Methylene Blue (MB). The influence of affecting variables, such as initial MB dye concentration (2–8mg L−1), Cu(II)-MOF mass (0.01–0.03 mg), pH (3.0–9.0), and time of irradiation (30–90 min). The photocatalytic degradation efficiency was investigated by the central composite design (CCD) methodology. The results of CCD analysis for optimum values of variables revealed that Cu(II)-MOF mass was 0.025g, the initial concentration of MB was 3.51 mg L−1, pH was 4.50 and irradiation time was 75 min.Under the optimum conditions, the photocatalytic MB degradation percentage at the desirability function value of 1.0 was found to be 70%. In addition, the obtained R2 value of 0.97 in the regression analysis showed a high photocatalytic efficiency of the proposed method for MB degradation. Manuscript profile -
Open Access Article
62 - Removal of methylene blue using biosynthesized silver nanoparticles
Raoof Jabbari Nahid Ghasemi Majid Ramezani -
Open Access Article
63 - Investigation of performance of bimodal/functionalized mesoprorous silica nanoparticles on the adsorption of methylene blue from aqueous solution
Shahnaz Nayyeri Amir Vahid Majid Abdous Aliakbar Miran Beigi -
Open Access Article
64 - Exfoliated graphite/Selenium-Zinc Oxide Nanocomposites for Photodegradation of Organic Dye in Water and Its Antibacterial Activity Against Aater Borne Pathogens
Olubori Idowu Sonde Moses Gbenga Peleyeju Fatai Oladipupo Oladoyinbo Adejare Rasaq Oloyede Tajudeen Adeniyi Afolabi Hameed Adekola Adesokan Omotayo Ademola Arotiba Enoch Olugbenga Dare -
Open Access Article
65 - Photodegradation of methylene blue in aqueous solution by a new Cu(II)-MOF based on diamino diphenyl sulfone ligand through response surface methodology (RSM)
Zahra Moseni nik Saeed Jamehbozorgi Majid Ramezani Tahere Momeni Esfahani -
Open Access Article
66 - Photo Degradation of methylene blue in aqueous solution by a new Cu(II)-MOF based on diaminodiphenyl sulfone ligand through response surface methodology (RSM)
Zahra Moseni nik Saeed Jamehbozorgi Majid Ramezani Tahere Momeni Esfahani -
Open Access Article
67 - Preparation and Characterization of Curcumin-Silver Nanoparticle and Evaluation of the Effect of Poly Ethylene Glycol and Temperature
Parisa Adibzadeh Negar Motakef-Kazemi -
Open Access Article
68 - Removal of methylene blue using biosynthesized silver nanoparticles
Raoof Jabbari Nahid Ghasemi Majid Ramezani -
Open Access Article
69 - Preparation, characterization and testing the catalytic activity of a new acidic ionic liquid in multicomponent reactions
Abdolkarim Zare Elaheh Sharif Azam Arghoon Marzieh Ghasemi Bentolhoda Dehghani Sorayya Ahmad-Zadeh Fatemeh Zarei -
Open Access Article
70 - Hydrothermally synthesized nanocrystalline Nb2O5 and its visible-light photocatalytic activity for the degradation of congo red and methylene blue
Subhash Dharmraj Khairnar Manohar Rajendra Patil Vinod Shankar Shrivastava -
Open Access Article
71 - Ecofriendly synthesis of biscoumarin derivatives catalyzed by EDTA-modified magnetic animal bone meal nanoparticles in water
Ahmad Reza Momeni Sadegh Bakhtiar -
Open Access Article
72 - Enhanced removal of methylene blue dye by bimetallic nano-sized MOF-5s
Mahshid Zebardast Abdollah Fallah Shojaei Khalil Tabatabaeian -
Open Access Article
73 - Nanomagnetite-Fe3O4 as a highly efficient, green and recyclable catalyst for the synthesis of 4,4´-(arylmethylene)-bis(3-methyl-1-phenyl-1H-pyrazol-5-ol)s
Abdolkarim Zare Fereshteh Abi Vahid Khakyzadeh Ahmad Reza Moosavi-Zare Alireza Hasaninejad Mahmoud Zarei -
Open Access Article
74 - One-pot and efficient synthesis of triazolo[1,2-a]indazole-triones catalyzed by poly(ethylene glycol) based magnetic dicationic ionic liquid
Bijan Mombeni Goodajdar Soghra Soleimani -
Open Access Article
75 - Nano-SiO2/hexamethylenetetramine promoted synthesis of pyrano[2,3-c] pyrazoles under solvent-free conditions
Bi Bi Fatemeh Mirjalili Mina Keihanfar -
Open Access Article
76 - Trifluoroacetate-bonded polyethylene graphene oxide composite as a novel and efficient catalyst for the synthesis of benzimidazoles under solvent-free conditions
Esmael Rostami Seyed Mahdi Haghayeghi -
Open Access Article
77 - Cuprous oxide nanocubes functionalized with graphene quantum dots and its application for methylene blue degradation
Quyen Tran Dang Pham My Ngo Toan Pham Thien Doan Thanh Luong -
Open Access Article
78 - Porous and Bifunctional ZnO-Hydroxyapatite Nanostructure for Photocatalytic Degradation of Paracetamol and Methylene Blue in Water
Jihane Labrag Chaimaa El Bekkali Abdeladim Oulguidoum D. Robert Abdelaziz Laghzizil J. M. Nunzi -
Open Access Article
79 - Synthesis of Ag-Ag2O nanoparticles using Ageratum conyzoides leaf extract for the catalytic reduction of nitrobenzene and methylene blue and antibacterial applications
Dinesh Patil Kagepura Chandrashekara Jayappa Manjanna Malavalli Sridhara -
Open Access Article
80 - Preparation and Characterization of WO3 Nanosheets and Au/WO3 Nanocomposite for Rabid Photocatalytic degradation of methylene blue dye
Fatima Allawi Abdul Sajad Hanaa Egzar Mazin MAhdi -
Open Access Article
81 - Highly Porous Bi(III) Modified Rice Husk Silica Photocatalyst for the Photocatalytic Removal of Cationic Methylene Blue
Normawati Jasni Anwar Iqbal N. H. H Abu Bakar Dede Heri Yuli Yanto Hor Jia Yi Noor Haida Mohd Kaus Mohd Norazmi Ahmad Sri Mulijani -
Open Access Article
82 - Application of TiO2–zeolite as photocatalyst for photodegradation of some organic pollutants
Azadeh Bahranifard -
Open Access Article
83 - Synthesis of 4,4′-(arylmethylene)bis(1H-pyrazol-5-ols) via multi-component reactions by using silica-bonded sulfamic acid derivatives
Shekoofeh Tayebi Khodabakhsh Niknam -
Open Access Article
84 - Silica-bonded n-propyldiethylenetriamine sulfamic acid as a recyclable solid acid catalyst for the synthesis of coumarin and biscoumarin derivatives
Khodabakhsh Niknam Seyed Ahmad Sajadi Roghayeh Hosseini Mojtaba Baghernejad -
Open Access Article
85 - Silica-bonded n-propyltriethylene-tetramine as a recyclable solid base catalyst for the synthesis of 2-amino-5-oxo-5,6,7,8-tetrahydro-4H-chromenes
Marzieh Makvandi Fatemeh Abiar Dil Ameneh Malekzadeh Mojtaba Baghernejad Khodabakhsh Niknam -
Open Access Article
86 - اثر تانن تفاله انگور و برگ بلوط بر گوارشپذیری آزمایشگاهی ماده آلی و تجزیهپذیری شکمبهای در گوسفند
M.J. Abarghuei Y. Rouzbehan D. Alipourاثر تانن­های تفاله انگور و برگ بلوط با استفاده از سه سری آزمون تولید گاز بر گوارش­پذیری آزمایشگاهی ماده آلی و تجزیه­پذیری شکمبه­ای ماده خشک و پروتئین خام در گوسفند مورد آزمایش قرار گرفت. پلی­اتیلن­گلیکول برای خنثی کردن اثرات تانن استفاده گردید. ت Moreاثر تانن­های تفاله انگور و برگ بلوط با استفاده از سه سری آزمون تولید گاز بر گوارش­پذیری آزمایشگاهی ماده آلی و تجزیه­پذیری شکمبه­ای ماده خشک و پروتئین خام در گوسفند مورد آزمایش قرار گرفت. پلی­اتیلن­گلیکول برای خنثی کردن اثرات تانن استفاده گردید. تولید گاز در زمان­های 2، 4، 6، 8، 12، 24، 48، 72، 96 و 120 ساعت انکوباسیون ثبت گردید. ترکیب شیمیایی (گرم در کیلوگرم ماده خشک) تفاله انگور و برگ بلوط تعیین گردید و مقادیر ماده آلی 940 و 940، پروتئین خام 94 و 116، دیواره سلولی 568 و 515، دیواره سلولی بدون همی­سلولز 467 و 316، لیگنین 242 و 93، کل ترکیبات فنولیک 5/70 و 82، تانن کل 7/49 و 73، تانن متراکم 79 و 4/5، تانن قابل هیدرولیز 40 و 70 بود. استفاده تفاله انگور و برگ بلوط مقدار گوارش­پذیری آزمایشگاهی ماده آلی، اسیدهای چرب فرار کوتاه زنجیره، بخش غیر قابل­ حل ولی قابل تخمیر و سرعت تخمیر را در مقایسه با تیمار شاهد کاهش داد (05/0P<). افزودن پلیاتیلن­گلیکول مقدار تولید گاز را در کل زمان­های انکوباسیون افزایش داد. کنتیک تولید گاز، گوارش­پذیری آزمایشگاهی ماده آلی و اسیدهای چرب فرار کوتاه زنجیره با افزودن پلی­اتیلن­گلیکول افزایش یافتند (05/0P<). درصد افزایش تولید گاز در تفاله انگور بیشتر از برگ بلوط بود. مقادیر پروتوزوآی کل، جنس ایزوتریجا و داسی­تریچا و زیرخانواده­های انتودینینه، دیپلودینینه و افریوسکالسینه با اضافه کردن تفاله انگور و برگ بلوط کاهش یافتند. با افزودن پلی­اتیلن­گلیکول به تیمار حاوی تفاله انگور، جمعیت پروتوزوآی کل، زیرخانواده­های انتودینینه، دیپلودینینه و افریوسکالسینه را افزایش یافت (05/0P<)، ولی در تیمار حاوی برگ بلوط جنس ایزوتریچا و داسی­تریچا و زیرخانواده دیپلودینینه افزایش یافت (05/0P<). مقدار تجزیه­پذیری مؤثر ماده خشک و پروتئین خام (گرم در کیلوگرم ماده خشک) یونجه، تفاله انگور و بر بلوط به ترتیب (6/646، 7/357، 3/362) و (821، 3/227، 202) بر اساس روش کیسه­های نایلونی برآورد گردید. در کل، استفاده از تفاله انگور و برگ بلوط تولید آمونیاک و جمعیت پروتوزوآ را کاهش داد. جیره­های حاوی تفاله انگور و برگ بلوط در مقایسه با یونجه قابلیت ­تخمیر کمتری داشتند. افزودن پلی­اتیلن­گلیکول به جیره­های حاوی تفاله انگور و برگ بلوط قابلیت ­تخمیر را بهبود بخشید. Manuscript profile -
Open Access Article
87 - The Influences of Adding Polyethylene Glycol and Activated Sodium Bentonite on the Performance, Blood Parameters, and Muscle Mineral Content of Saanen Goats Fed Pistachio Byproducts
M. Kordi A.A. Naserian F. Samadian -
Open Access Article
88 - بخش بندی پروتئین خام و تولید گاز در سیلاژهای یونجه عملآوری شده با عصاره محصولات فرعی پسته در شرایط آزمایشگاه
ا. مختارپور ع.ع. ناصریان ر. ولیزاده م. دانش مسگران ف. پورملاییبه منظور بررسی بخش­های مختلف پروتئین خام و تولید گاز در شرایط آزمایشگاه در سیلاژهای یونجه عملآوری شده با سطوح مختلف عصاره محصولات فرعی پسته و ارزیابی ارزش زیستی تانن­های آن، دو آزمایش انجام شد. محصولات فرعی پسته با نسبت 1:5 (وزن به حجم) به مدت 12 ساعت در آب خیس Moreبه منظور بررسی بخش­های مختلف پروتئین خام و تولید گاز در شرایط آزمایشگاه در سیلاژهای یونجه عملآوری شده با سطوح مختلف عصاره محصولات فرعی پسته و ارزیابی ارزش زیستی تانن­های آن، دو آزمایش انجام شد. محصولات فرعی پسته با نسبت 1:5 (وزن به حجم) به مدت 12 ساعت در آب خیسانده شدند. پس از صاف کردن و تغلیظ، عصاره خام به علوفه تازه یونجه اضافه شد تا به ترتیب سطوح 1، 2 و 3 درصد ماده خشک یونجه، تانن به دست آید و سپس به مدت 60 روز سیلو شدند. چهار تیمار به این ترتیب بود؛ سیلاژ یونجه بدون عملآوری با عصاره محصولات فرعی پسته، به عنوان شاهد (T0)، اضافه کردن تانن محصولات فرعی پسته در سطح 1 درصد (T1)، 2 درصد (T2) و 3 درصد ماد خشک (T3). عملآوری سیلاژ یونجه، میزان ترکیبات نیتروژنه غیر پروتئینی را کاهش و بخش B2 را در طی سیلو شدن، افزایش داد. تولید گاز تجمعی پس از 96 ساعت انکوباسیون، قابلیت هضم ماده آلی (OMD) و انرژی قابل متابولیسم (ME) در تیمار T2 و T3 در مقایسه با تیمار شاهد کاهش پیدا کرد. میزان تولید گاز و اسیدهای چرب کوتاه زنجیر (SCFA) در سیلاژهای عملآوری شده در حضور پلی اتیلن گلیکول (PEG) افزایش یافت که نشان می­دهد وجود ترکیبات فنولی و تانن­ها باعث کاهش تولید گاز شد. می­توان نتیجه گرفت که عملآوری سیلاژ یونجه با عصاره محصولات فرعی پسته از طریق ممانعت میکروبی، می­تواند منجر به کاهش هدرروی نیتروژن در طی سیلو شدن و کاهش تجزیه پذیری ماده آلی شود. Manuscript profile -
Open Access Article
89 - Investigate and Compare the Performance of Channel and Low Pressure Polyethylene Pipes for Hydraulic (Case Study: Plain of Shush)
Mahmoud Malekpour Behrooz DahanzadehIran is one of the countries that is weathered in most of its regions with hot, dry and semi-arid weather. According to the average rainfall in the world, which is 860 mm in Iran and 240 mm in Iran, rainfall in Iran is very low.Meanwhile, with the increase and construct MoreIran is one of the countries that is weathered in most of its regions with hot, dry and semi-arid weather. According to the average rainfall in the world, which is 860 mm in Iran and 240 mm in Iran, rainfall in Iran is very low.Meanwhile, with the increase and construction of wells and the abundance of underground water reserves, the surface of these waters has fallen sharply, with increasing population, it is necessary to use modern methods of irrigation for optimal use of aquifers and cemeteries.For this reason, in this study, a case study was carried out in Araez Plain, located in the city of Susa, and compared the implementation of canal and one of the newest methods of irrigation, polyethylene low pressure pipe, using hydraulic, using the basics of design, maps, documents Contract, books, articles, pamphlets, calculations, hydraulic modeling, observations and field visits from the stages of material supply, implementation, duration of implementation.The results showed that due to lower water losses and optimal water use, the speed of operation and ease of implementation, the delivery of water to operators in shorter time, less land plots, and the optimal use of hydraulic hydraulics, polyethylene low pressure pipe Canal is preferable. Manuscript profile -
Open Access Article
90 - Investigating and Comparing Canalet and Low-Pressure Polyethylene Pipe for Exploitation in Irrigation (Case Study: Araez Plain, Shoush)
Mahmoud Malekpour Bfhrooz DahanzadehSince one of the major problems the country is the lack of Precipitation and having areas that are mostly hot and dry As well as the indiscriminate harvesting of underground water resources and population growth adding, The country's water crisis by taking into account MoreSince one of the major problems the country is the lack of Precipitation and having areas that are mostly hot and dry As well as the indiscriminate harvesting of underground water resources and population growth adding, The country's water crisis by taking into account the recent drought years this problem has been doub We should think about our use of Precipitatio he city of Shoush, especially for plain Arayez between prefabricated concrete channel (channel) and low pressure polyethylene pipes and comparative review of the operation is done n and Water Resources. But because in the 2-year-old irrigation network utilization does not pass And the areas that need more years of operation they are going to investigate The channel region of Dezful mustache, about 20 years of operation it is g And low pressure polyethylene pipes Mnyvhy Abadan area nearly 10 years of operation it is going research and visited oing The results are plain to Arayez be used. After investigation And compare the advantages and disadvantages of each of the systems and according to soil type and climate Arayez plain concluded That the benefit of a low-pressure polyethylene pipe is very appropriate channel. Manuscript profile -
Open Access Article
91 - Review and Compare of Hydraulic and Low-Pressure Polyethylene Canalet and Pipe Run
mahmoud malekpour Bfhrooz DahanzadehIran is one of the countries that most of it has a warm climate, dry and semi-dry.The average rainfall in the world that is 860 mm and 240 mm in Iran Rainfall precipitation in Iran is very low . Meanwhile, with the increase and construction of wells excessive and uncont MoreIran is one of the countries that most of it has a warm climate, dry and semi-dry.The average rainfall in the world that is 860 mm and 240 mm in Iran Rainfall precipitation in Iran is very low . Meanwhile, with the increase and construction of wells excessive and uncontrolled exploitation of reserves of underground water in the water level drastically gone down and our country grew and population growth, it is necessary for the optimal use of water resources and Precipitation of modern methods of irrigation. That's why in this case study on the plain Arayez located in the city of Susa to investigate and compare the performance of your channel and one of the modern irrigation techniques the pipes of low pressure polyethylene hydraulically using the principles of design, drawings, documents Treaty, books, articles, pamphlets, calculations, hydraulic modeling, observations and field surveys of the materials, performance, time has run out. The results showed that due to fewer losses of water and efficient use of water, speed of operation and high ease of implementation, water delivery to beneficiaries in a shorter time, toss less land and more efficient use of hydraulic head water pipe of low pressure polyethylene on channel is preferred. Manuscript profile -
Open Access Article
92 - The effect of rootstocks on the peel phenolic compounds, cartenoids, chlorophylls and ethylene of Younesi tangerine (Citrus reticulata).
Behzad Babazadeh Darjazi -
Open Access Article
93 - The effect of rootstocks on sugars, acids, carotenoids, chlorophylls, and ethylene of Satsuma mandarin (Citrus unshiu)
Behzad Babazadeh Darjazi Mozhgan Farzamisepehr Behrouz Golein -
Open Access Article
94 - Antioxidant capacity and chemical composition of Carum copticum under PEG treatment.
Roya Razavizadeh Mozhdeh Karami -
Open Access Article
95 - Effects of hydro- and bio-priming on some physiological and biochemical characteristics of quinoa (Chenopodium quinoa) seedlings under drought stress
Saba Dashab Heshmat Omidi -
Open Access Article
96 - Effect of ethylene diamine tetra acetic acid chelator in the presence of chromium on growth and some physiological characteristics of sunflower.
Maryam Niakan Fereshteh Kaghazloo Kaghazloo -
Open Access Article
97 - بهبود عمر پس از برداشت گل های شاخه بریده آلسترومریا ’Konst Coco‘ با استفاده از ترکیب روش های مکانیکی و شیمیایی
مهدی حکیمی اصل احمدرضا بریموندی به ­منظور بررسی اثر متقابل روش ­های مکانیکی (شکاف ته ساقه) و شیمیایی (نانوسیلور) بر عمر گلجایی و خصوصیات بیوشیمیایی گل­ های شاخه بریده آلسترومریا ’Konst Coco‘ آزمایشی فاکتوریل بر پایه طرح کاملا تصادفی با 10 تیمار، 3 تکرار، 30 پلات و 150 شا More به ­منظور بررسی اثر متقابل روش ­های مکانیکی (شکاف ته ساقه) و شیمیایی (نانوسیلور) بر عمر گلجایی و خصوصیات بیوشیمیایی گل­ های شاخه بریده آلسترومریا ’Konst Coco‘ آزمایشی فاکتوریل بر پایه طرح کاملا تصادفی با 10 تیمار، 3 تکرار، 30 پلات و 150 شاخه گل انجام شد. تیمارهای آزمایشی شامل شکاف طولی انتهای ساقه در دو سطح (بدون شکاف و شکاف 5 سانتی­ متری) و نانوسیلور در 5 سطح (0، 5، 10، 20 و 30 میلی­ گرم در لیتر) بودند. نتایج نشان داد که اثر متقابل تیمارهای آزمایشی روی همه صفات ارزیابی شده از نظر آماری معنی­ دار است. طبق نتایج مقایسه میانگین­ ها، بیشترین عمر گلجایی (13/88 روز) با کاربرد "شکاف 5 سانتی­ متری× 20 میلی­ گرم در لیتر نانوسیلور" حاصل شد که نسبت به شاهد 6/83 روز ماندگاری این گل شاخه بریده را افزایش داد. بیشترین جذب آب (2/03 میلی­ لیتر در هر گرم وزن تر)، ماده خشک (14/11 درصد)، کلروفیل کل (2/432 میلی­ گرم در هر گرم وزن تر) و کاروتنوئید گلبرگ (2/307 میکروگرم در هر گرم وزن تر) و کمترین کاهش وزن تر (1/34 گرم)، باکتری انتهای ساقه و محلول گلجایی (3 کلنی)، اتیلن (0/807 نانولیتر در لیتر در ساعت در هر گرم وزن تر)، نشت یونی (6/04 درصد)، MDA (12/53 نانومول در هر گرم وزن تر در دقیقه)، فعالیت آنزیم­ های SOD (12/64 واحد آنزیم در هر گرم وزن تر در دقیقه) و POD (0/09 نانومول در هر گرم وزن تر در دقیقه) برای تیمار "شکاف 5 سانتی­ متری× 20 میلی­ گرم در لیتر نانوسیلور" ثبت شد که موفق­ ترین تیمار در حفظ عمر گلجایی و خصوصیات بیوشیمیایی گل­ های شاخه بریده آلسترومریا‘Konst Coco’ بود. Manuscript profile -
Open Access Article
98 - تاثیر سدیم نیتروپروساید بر عمر گلجایی گلهای شاخه بریده رز، لیسیانتوس و آفتابگردان
نیره نظیری مقدم هستی هاشم آبادی بهزاد کاویانی Mohammad Reza Safari Motlagh Mojtaba Khorrami Raadعمر گلجایی طولانی مهمترین فاکتور تعیین کننده ارزش اقتصادی در گل­های شاخه بریده است. در این پژوهش اثر سدیم نیتروپروساید (SNP) بصورت تیمار پالس در 4 سطح 0، 20، 40 و 60 میکرومولار بر عمر گلجایی گل­های شاخه بریده رز (Rosa hybrida L.)، لیسیانتوس (Eustoma grandiflorum Moreعمر گلجایی طولانی مهمترین فاکتور تعیین کننده ارزش اقتصادی در گل­های شاخه بریده است. در این پژوهش اثر سدیم نیتروپروساید (SNP) بصورت تیمار پالس در 4 سطح 0، 20، 40 و 60 میکرومولار بر عمر گلجایی گل­های شاخه بریده رز (Rosa hybrida L.)، لیسیانتوس (Eustoma grandiflorum) و آفتابگردان (Helianthus annuus L.) بررسی شد. این آزمایش بصورت فاکتوریل در قالب طرح کاملا تصادفی در سه تکرار و 12 تیمار اجرا شد. نتایج نشان داد که بالاترین عمرگلجایی گل­های شاخه بریده رز (33/14 روز) و آفتابگردان (5/14 روز) با کاربرد 40 میکرومولار SNP بدست می­آید در حالی که بیشترین عمر گلجایی لیسیانتوس (00/14 روز) متعلق به تیمار 20 میکرومولار SNP بود. تیمار 20 میکرومولار SNP موثرترین تیمار در حفظ ماده خشک در گل­های شاخه بریده رز بود.کاربرد SNP نسبت به شاهد بطور معنی­داری موجب کاهش تولید اتیلن در گل­های شاخه بریده رز و لیسیانتوس شد. کمترین اتیلن تولید شده در گل­های شاخه بریده آفتابگردان (03/0 نانولیتر در لیتر در ساعت در هر گرم وزن تر) به تیمار 60 میکرومولار SNP تعلق داشت. SNP اثر معناداری بر جذب آب، جمعیت میکروبی محلول گلجایی و انتهای ساقه و کلروفیل b نداشت؛ اما بطور معنی­داری موجب حفظ پروتئین در گل­های شاخه بریده مورد آزمایش شد. بطورکلی می­توان گفت که SNP از طریق مهار تولید اتیلن و حفظ پروتئین­ها موجب بهبود ماندگاری پس از برداشت در گل­های شاخه بریده رز، لیسیانتوس و آفتابگردان می­شود. Manuscript profile -
Open Access Article
99 - بررسی اثرات 1-MCP (1-متیل سیکلوپروپن) بر شاخصهای مورفوفیزیولوژیکی و عمر گلدانی Primula sinensis L.
المیرا قاسم زاده ندا نکویار محمود قاسم نژاد زکیه صفااثرات 1-MCP بر برخی از صفات مورفوفیزیولوژیکی و عمر گلدانی گل پامچال در یک آزمایش فاکتوریل بر پایۀ طرح کاملاً تصادفی با دو فاکتور 1-MCP در شش سطح (0، 50، 75، 100، 150 و 200 نانولیتر در لیتر)، در سه مدت زمان (18، 21 و 24 ساعت) در سه تکرار به تعداد 54 کرت آزمایشی و 270 بوت Moreاثرات 1-MCP بر برخی از صفات مورفوفیزیولوژیکی و عمر گلدانی گل پامچال در یک آزمایش فاکتوریل بر پایۀ طرح کاملاً تصادفی با دو فاکتور 1-MCP در شش سطح (0، 50، 75، 100، 150 و 200 نانولیتر در لیتر)، در سه مدت زمان (18، 21 و 24 ساعت) در سه تکرار به تعداد 54 کرت آزمایشی و 270 بوته پامچال مورد بررسی قرار گرفت. آزمایش در اتاق پس از برداشت دانشکده کشاورزی دانشگاه آزاد اسلامی واحد رشت با دمای محیط 2±20 درجه سانتی­گراد، رطوبت­نسبی 60 تا 70 درصد، شدت نور 15 تا 20 میکرومول بر مترمربع بر ثانیه و طول روز 12 ساعت انجام شد. در این تحقیق تولید اتیلن، درصد ماده خشک، عمر گلدانی گل پامچال، محتوای پروتئین در گلبرگها، شاخصهای کلروفیل a، b و کل و نسبت گلچههای باز به گلچههای بسته اندازهگیری شد. نتایج تجزیه واریانس نشان داد که اثر مدت زمان فقط بر تولید اتیلن و میزان پروتئین گلبرگ معنیدار بود، اما غلظت 1-MCP روی تمامی صفات به جز عمر گلدانی معنیدار بود. اثر متقابل مدت زمان و غلظت 1-MCP از نظر آماری بر عمر گلدانی در سطح 5 درصد معنیدار بود، به­طوری که تیمار T3C5 (24 ساعت + 150 نانولیتر در لیتر 1-MCP) عمر گلدانی را 2/1 روز در مقایسه با شاهد افزایش داد. Manuscript profile -
Open Access Article
100 - بررسی اثر متقابل بنزوات سدیم و اتانول روی عمر گلجایی گلهای شاخه بریده رز رقم ’اولانچ‘
ندا نکویار مه فام حمیدی امامیعمر گلجایی گلهای شاخه بریده رز تحت تاثیر اتیلن و تنش آبی کاهش مییابد. اتانول و بنزوات سدیم از جمله ترکیبات مورد استفاده در محلول گلجایی هستند که دارای اثر ضد میکروبی و ضد اتیلنی میباشند. در این راستا و جهت بررسی اثر سطوح مختلف اتانول (0، 2، 4 و 6 درصد) و بنزوات سدیم Moreعمر گلجایی گلهای شاخه بریده رز تحت تاثیر اتیلن و تنش آبی کاهش مییابد. اتانول و بنزوات سدیم از جمله ترکیبات مورد استفاده در محلول گلجایی هستند که دارای اثر ضد میکروبی و ضد اتیلنی میباشند. در این راستا و جهت بررسی اثر سطوح مختلف اتانول (0، 2، 4 و 6 درصد) و بنزوات سدیم (0، 150، 200 و 250 میلیگرم در لیتر) روی عمر گلجایی گلهای شاخه بریده رز رقم ’اولانچ‘ آزمایشی فاکتوریل در قالب طرح کاملا تصادفی با 16 تیمار در سه تکرار اجرا شد. تیمارهای آزمایشی بصورت پالس24 ساعته استفاده شدند. از آب مقطر بهعنوان شاهد استفاده شد. نتایج نشان داد که اثر متقابل "اتانول× بنزوات سدیم" موجب بهبود عمر گلجایی و سایر صفات ارزیابی شده میشود، بطوریکه بیشترین عمرگلجایی (13 روز)، جذب آب (3/54 میلیلیتر در هر گرم وزن تر)، ماده خشک (44/38 درصد)، پروتئین گلبرگ (35/08 درصد) و کلروفیل کل (13/09 میلیگرم در هر گرم وزن تر) با کاربرد "اتانول 4 درصد× 150 میلیگرم در لیتر بنزوات سدیم" حاصل شد. "اتانول 4 درصد×150 میلیگرم در لیتر بنزوات سدیم " دارای کمترین کاهش وزن تر (1/98 گرم)، کمترین باکتری انتهای ساقه (8/33 کلنی)، کمترین جمعیت باکتری محلول گلجایی (23/33 کلنی) و کمترین تولید اتیلن (0/4 نانولیتر در لیتر در ساعت در گرم وزن تر) بود. باتوجه به نتایج حاصل، استفاده ترکیبی از "اتانول 4 درصد×150 میلیگرم در لیتر بنزوات سدیم" جهت حفظ کیفیت و افزایش عمر گلجایی گلهای شاخه بریده رز رقم ’اولانچ‘ توصیه میشود. Manuscript profile -
Open Access Article
101 - اثر اتانول و سیکلوهگزیمید در عمر گل های شاخه بریده آلسترومریا (Alstroemeria hybrida)
دینا یعقوبی کیاسه محراب یادگاریآلسترومریا یکی از زیباترین گلهای تیره آلسترومریاسه است. یکی از مشکلات عمده این گل شاخه بریده طول عمر کوتاه برگها است که باعث کاهش ارزش اقتصادی این گل بریده شده است. البته ریزش گلبرگها قبل از پژمردگی آنها یکی دیگر از مشکلات مهم این گل بهشمار میآید. برگهای ای Moreآلسترومریا یکی از زیباترین گلهای تیره آلسترومریاسه است. یکی از مشکلات عمده این گل شاخه بریده طول عمر کوتاه برگها است که باعث کاهش ارزش اقتصادی این گل بریده شده است. البته ریزش گلبرگها قبل از پژمردگی آنها یکی دیگر از مشکلات مهم این گل بهشمار میآید. برگهای این گل به اتیلن بسیار حساس است. به منظور بررسی تاثیر متقابل اتانول و اسپری سیکلوهگزاماید بر عمر گلجایی و ویژگیهای پس از برداشت گل بریدهی آلسترومریا، آزمایش فاکتوریل بر پایه طرح کاملا تصادفی با چهار سطح اتانول (2،0، 4 و 6 درصد) و سیکلو هگزاماید به صورت اسپری در سه سطح (0، 5/0 و 1 میلیمولار) در 3 تکرار و 36 پلات آزمایشی با 5 شاخه گل در هر پلات انجام شد. نتایج تجزیه واریانس دادهها نشان میدهد که اثرمتقابل اتانول و سیکلوهگزاماید بر صفات اندازه گیری شده شامل عمر گلجایی سطح 5 درصد و مابقی صفات در سطح 1 درصد معنیدار بوده است. مقایسهی میانگین تیمارها نیز نشان داد که تیمار سیکلوهگزاماید 1 میلیمولار به همراه اتانول 6 درصد با 94/15 روز بیشترین عمر گلجایی نسبت به شاهد (74/10 روز) و دیگر تیمارها داشته است. Manuscript profile -
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102 - اثرات 1- متیلسیکلوپروپن و اتیلن بر فعالیت آنزیمهای آنتیاکسیدانت و صفات فیزیولوژیکی – بیوشیمیایی گل شاخه بریده میخک رقم ‘Fortune’
اعظم رنجبر نورالله احمدی ملیحه افتخاریگل میخک (Dianthus caryophyllus L.) از مهمترین گلهای شاخهبریده در سراسر دنیا محسوب میشود. بیشتر ارقام میخک حساس به اتیلن بوده و پس از برداشت دچار تغییرات فیزیولوژیکی و بیوشیمیایی متعددی میشوند. امروزه استفاده از مواد بازدارنده بیوسنتز و عمل اتیلن جهت حفظ کیفیت و افزا Moreگل میخک (Dianthus caryophyllus L.) از مهمترین گلهای شاخهبریده در سراسر دنیا محسوب میشود. بیشتر ارقام میخک حساس به اتیلن بوده و پس از برداشت دچار تغییرات فیزیولوژیکی و بیوشیمیایی متعددی میشوند. امروزه استفاده از مواد بازدارنده بیوسنتز و عمل اتیلن جهت حفظ کیفیت و افزایش عمر پس از برداشت محصولات اهمیت خاصی دارند. در این تحقیق به منظور بررسی اثر تیمار 1- متیلسیکلوپروپن و اتیلن روی حفظ کیفیت و افزایش عمر گلجای گلهای شاخه بریده میخک رقم ʼفورچونʻ آزمایشی در قالب طرح کاملا تصادفی با سه تکرار انجام شد. ابتدا گلهای شاخهبریده با چهار سطح صفر، نیم، یک و یک و نیم میکرو لیتر بر لیتر 1- متیلسیکلوپروپن به مدت 24 ساعت تیمار شدند و سپس به مدت 16 ساعت در معرض غلظت یک میکرو لیتر بر لیتر اتیلن قرار گرفتند.تجزیه و تحلیل دادهها با استفاده از نرمافزار آماری MSTATC و مقایسه میانگینها بر اساس آزمون LSD در سطوح احتمال یک درصد انجام شد. نتایج این تحقیق نشان داد که تیمار 1- متیلسیکلوپروپن اثر معنیداری بر روی صفت عمر گلجایی و همچنین صفات بیوشیمیایی از جمله میزان کلروفیل برگ، میزان آنتوسیانین گلبرگ، ثبات غشا گلبرگ و میزان فعالیت آنزیمهای آنتیاکسیدانت از جمله کاتالاز، پراکسیداز و سوپراکسید دیسموتاز داشت. بالاترین عمر گلجایی و بیشترین ثبات غشا مربوط به تیمار یک و نیم میکرو لیتر بر لیتر 1- متیلسیکلوپروپن بود که بر اساس آزمون LSD تفاوت معنیداری در سطح یک درصد با تیمار شاهد و غلظت نیم میکرو لیتر بر لیتر 1- متیلسیکلوپروپن داشت، اگرچه با تیمار یک میکرولیتر بر لیتر 1- متیلسیکلوپروپن دارای تفاوت معنیداری از لحاظ آماری نبود. بیشترین مقدار کلروفیل و آنتوسیانین در تیمار 5/1 میکرو لیتر بر لیتر1 - متیلسیکلوپروپن بدست آمد که اختلاف معنیداری در سطح احتمال 1 درصد با سایر تیمارها نشان داد. همچنین بیشترین و کمترین فعالیت آنزیم کاتالاز و پراکسیداز به ترتیب مربوط به تیمار 1- متیلسیکلوپروپن با غلظت یک میکرو لیتر بر لیتر و تیمار شاهد بود، بیشترین و کمترین فعالیت آنزیم سوپراکسید دیسموتاز به ترتیب در تیمارهای 1- متیلسیکلوپروپن با غلظت یک و نیم میکرو لیتر بر لیتر و تیمار شاهد مشاهده شد. درنتیجه، کاربرد 1- متیلسیکلوپروپن شروع علایم پیری را به تاخیر انداخته و باعث افزایش عمر گلجایی گلهای شاخه بریده میخک ’فورچون‘ شد. Manuscript profile -
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103 - نقش (1 -متیل سیکلوپروپن) در بهبود کیفیت پس از برداشت بعضی ارقام گل شاخه بریده رز
فهمی آ.اس. حسنبه­منظور بهبود کیفیت پس از برداشت و پتانسیل صادرات گل بریده رُز (Rosa hybrida L.) ارقام ’هپی آور‘ و ’بوردو‘ اثر 1-MCP به­عنوان یک بازدارنده اتیلن تحت مطالعه قرار گرفت. غلظت­های 1-MCP عبارت بودند از: 3/0، 4/0، 5/0 و 6/0 گرم در متر مکعب Moreبه­منظور بهبود کیفیت پس از برداشت و پتانسیل صادرات گل بریده رُز (Rosa hybrida L.) ارقام ’هپی آور‘ و ’بوردو‘ اثر 1-MCP به­عنوان یک بازدارنده اتیلن تحت مطالعه قرار گرفت. غلظت­های 1-MCP عبارت بودند از: 3/0، 4/0، 5/0 و 6/0 گرم در متر مکعب که برای مدت 18 ساعت در دمای 8 درجه سانتی­گراد مشابه شرایط حمل و نقل گل­ها مورد آزمایش قرار گرفتند. تیمار 1-MCPدر مقایسه با شاهد، به­صورت معنی­داری عمر گلجایی را افزایش و کاهش وزن را در هر 2 رقم به حداقل رساند، البته پاسخ رقم ’هپی آور‘ نسبت به رقم ’بوردو‘ بهتر و بیشتر بود. تیمار 1-MCP مقدار نسبی آب (RWC) را نیز در گل­ها بهبود بخشید. 1-MCP به صورت معنی­داری تخریب کلروفیل و کربوهیدرات­ها را در طول عمر گلجایی در هر 2 رقم به تاخیر انداخت. تولید اتیلن به صورت معنی­داری توسط 1-MCP کاهش یافت. شاخص ثبات غشا (MSI) در پاسخ به 1-MCP حفظ شد و MDA کاهش یافت. بهترین تیمارها از این نظر به­ترتیب غلظت­های 4/0 و 5/0 برای ارقام ’هپی آور‘ و ’بوردو‘ بودند. تیمار 1-MCP برای ممانعت از اثرات منفی اتیلن روی این دو رقم رُز توصیه می­شود. Manuscript profile -
Open Access Article
104 - Study of genetic variation of rice genotypes on the germination components and seedling growth in the drought stress condition
zahra khodarahmpour Elahe Ghorbani Abdolali GilaniThe present study was conducted to study genetic diversity in 26 rice genotypes (lRRl heat tolerant collection) in 2016 in Khuzestan Agricultural and Natural Resources Research Center as a factorial experiment based on a completely randomized design with three replicati MoreThe present study was conducted to study genetic diversity in 26 rice genotypes (lRRl heat tolerant collection) in 2016 in Khuzestan Agricultural and Natural Resources Research Center as a factorial experiment based on a completely randomized design with three replications including 24 lines and 2 hybrids as the first factor and drought stress with PEG 6000 in 5 levels of zero (control), -0.3, -1.8, -3.3 and -4.8 Bar were performed as the second factor. The results of analysis of variance showed that there was a significant difference between drought levels, genotypes and their interaction in all traits at a probability level of one percent. The lowest indices of germination and seedling growth were observed at the level of -4.8 Bar. The highest positive and significant correlation (r = %90**) was obtained between shoot length and seedling length. In principal component analysis, the four first components accounted for 85% of the total diversity. Cluster analysis with Ward method included genotypes in three clusters. In the first cluster of lines 48, 15, 35, 44, 42, 20, 19, 5, 28, 10, 16, 4, 2, 55, 53, 31, 34, 36 and HB2 hybrid, in the second cluster of lines 25 and 23 and hybrid HB1 and in the third cluster were lines 40, 13, 41 and 21. According to the results of mean of comparison, biplot and cluster analysis of the second cluster genotypes in terms of germination rate, shoot length, root length, seedling length, s Manuscript profile -
Open Access Article
105 - The Effect of Drought Stress on Germination and Early Growth of Sesamum indicum Seedling’s Varieties under Laboratory Conditions
Mohammad Hossein Bijeh keshavarziEnvironmental stresses specially drought, play an important role in decreasing plant growth, particularly during germination in dry and semi dry area. To considering the effect of drought stress caused by polyethylene glycol on germination and characteristics of 2 spice MoreEnvironmental stresses specially drought, play an important role in decreasing plant growth, particularly during germination in dry and semi dry area. To considering the effect of drought stress caused by polyethylene glycol on germination and characteristics of 2 spices of Sesamum indicum, we had done factorial and complete accidental plot with 4 treatments and 3 times repetition. Experimental treatments included osmotic potential in 4 levels (0, -4, -6, -10 bar) which was produced by polyethylene glycol 6000 and 2 sesame species (Safi Abadi and Dezfol). All data had been analyzed by SAS software and comparison of means had been done by Duncan test at 5% probable level. The results showed that, percentage and speed of all spices’ germination decline by osmotic potential enhancement. Other measured parameters such as radicle and coleoptile length, dry and wet weight declined by increasing osmotic potential as well. Manuscript profile -
Open Access Article
106 - Effect of hydro-ethanolic extract of Cucumis melo seeds on hepatic expression of genes encoding NADPH-oxidase and glutathione peroxidase in ethylene glycol-induced toxicity in male rats
Mehrnoosh Sadat Hoseinii Siamak Yousefi Siahkalroodi Maryam EidiIn the present study, the effect of hydroanthanolic extract of melon seed on the expression level of NOX4 and GPx1 genes in ethylene glycol poisoned mice was evaluated. In the present study, melon seed extract was first prepared by soaking in 80% ethanol. Mice were divi MoreIn the present study, the effect of hydroanthanolic extract of melon seed on the expression level of NOX4 and GPx1 genes in ethylene glycol poisoned mice was evaluated. In the present study, melon seed extract was first prepared by soaking in 80% ethanol. Mice were divided into 5 groups in each group 6 rat: a healthy control group, a poisoned control group and three experimental poisoned groups. To the experimental poisoned group, concentrations of 150, 300 and 600 mg/ kg of hydroethanolic extract of melon seed were fed orally. The results of the present study show that daily oral administration of ethylene glycol significantly increases the expression of genes encoding NOX4 and GPx1 in toxic groups compared to healthy controls. Increased expression of NOX4 and GPx1 genes indicates the occurrence of ethylene glycol-induced inflammation and toxicity. Treatment with hydroethanolic extract of melon seed at concentrations of 150, 300 and 600 mg / kg body weight significantly reduced the expression of NOX4 and GPx1 genes in the experimental groups compared with the control group. Decreased expression of NOX4 gene in comparison with the poisoned control group shows that administration of hydroethanolic extract of melon seed has reduced inflammation caused by ethylene glycol toxicity. Due to the fact that the amount of H2O2 increases following hepatotoxicity caused by ethylene glycol, the expression of the gene encoding glutathione peroxidase increases. Following treatment with melon hydroethanolic extract, H2O2 production is reduced, which may be due to the effects of antioxidant compounds in the extract. Manuscript profile -
Open Access Article
107 - Investigating the effect of zeolite catalyst in the co-pyrolysis of low density polyethylene and poplar wood
Sepideh Behnam Mortaza GholizadehIn this study, the effect of zeolite on the process of mixing poplar wood and low density polyethylene (LDPE) was investigated. For this purpose, in a laboratory-sized reactor, 15 g of this mixture was loaded and pyrolysis of the mixture was performed at 500 °C, atm MoreIn this study, the effect of zeolite on the process of mixing poplar wood and low density polyethylene (LDPE) was investigated. For this purpose, in a laboratory-sized reactor, 15 g of this mixture was loaded and pyrolysis of the mixture was performed at 500 °C, atmospheric pressure, and in the atmosphere of nitrogen gas. Addition of A4 zeolite catalyst to the pyrolysis of poplar wood and LDPE increased the amount of tar. The produced tar had two groups of aliphatic and aromatic compounds. The catalyst also increased the amount of aromatic substances in the tar and improved the quality of the tar by deoxygenation. According to the results of SEM analysis, it was found that the structure of the solutions produced by thermal and catalytic pyrolysis was similar to the structure of poplar wood. However, the catalytic products had more porosity. The results of FTIR analysis showed that the addition of catalyst caused a slight deoxygenation of wax surface obtained from catalytic pyrolysis and also reduced the amount of wax produced. These results showed that A4 zeolite catalyst tended to deoxygenate the surface of the products. According to the XRD patterns and elemental analysis of the catalyst, it was determined that a very small amount of coke was formed on the catalyst after the reaction. Manuscript profile -
Open Access Article
108 - Effect of the ionic liquid 1-butyl-3-methyl-imidazolium bromide as adjuvant on the formation of {PEG 600-potassium citrate} aqueous biphasic system at different temperatures
Sholeh Hamzehzadeh Mostafa AbbasiAbstract: In biotechnology, separation, extraction, and purification of biomolecules using aqueous biphasic systems, as environmental and economic sustainable alternatives for conventional water-organic solvent extraction techniques, have always been the focus of great MoreAbstract: In biotechnology, separation, extraction, and purification of biomolecules using aqueous biphasic systems, as environmental and economic sustainable alternatives for conventional water-organic solvent extraction techniques, have always been the focus of great attention and examina-tion. One approach proposed by researchers is based on the use of ionic liquids (ILs) as adjuvants in ABS, making the capability of these systems for the extraction of biomolecules to be promoted. In this regard, this work is devoted to study the effect of IL 1-butyl-3-methyl imidazolium bromide ([C4C1im] Br) on the formation of ABS Composed of a polyethylene glycol (PEG) with molecular weight 600 and a biodegradable organic salt potassium citrate. For this purpose, the binodal curves and the liquid-liquid equilibrium (LLE) data of the studied ABS, along with the partition coeffi-cients of [C4C1im]Br were determined at two temperatures of 278.15 K and 318.15 K. The results obtained indicate that the ability of [C4C1im]Br to promote the formation of the studied ABS de-creases with increasing temperature, so that at 318.15 K, the addition of IL makes the formation of two-phase system more difficult. In addition, [C4C1im]Br displays the partition coefficients greater than one for all the compositions and temperatures studied, which increases with increasing TLL at a given temperature. Manuscript profile -
Open Access Article
109 - Performance of carboxymethyl cellulose and alginate nanocomposite hydrogel containing graphene oxide nanosheets for removal of methylene blue dye
سید جمال الدین پیغمبردوست Abbas Mostafaei Parisa Mohammadzadeh Pakdel Mousa MohammadpourfardToday, with the development of industries and urbanization, the need for healthy water have increased. Hydrogels are effective adsorbents for removing pollutants from water sources. In this research, graphene oxide (GO) nanosheets were used to improve the performance of MoreToday, with the development of industries and urbanization, the need for healthy water have increased. Hydrogels are effective adsorbents for removing pollutants from water sources. In this research, graphene oxide (GO) nanosheets were used to improve the performance of methylene blue dye removal by carboxymethyl cellulose hydrogel and alginate, which were biocompatible. Carboxymethyl cellulose and alginate nanocomposite hydrogels containing graphene oxide nanosheets showed good performance compared to hydrogels synthesized by chemical method. The synthesized adsorbents were characterized by thermal gravimetric analysis (TGA) and scanning electron microscopy (SEM). Different weight percentages of GO (0-10 wt. %) were incorporated in the hydrogel matrix and obtained optimal value was 6 wt. %. The obtained removal efficiency was 65.4 and 73.1 % for CMC/Alg and CMC/Alg/GO, respectively, under optimal conditions (initial concentration of 56 mg/l, adsorbent dose of 1.5 g/l, 120 min contact time, and 25 °C temperature). Analysis of kinetic data showed that the pseudo-second-order model had R2 order of 0.986 and 0.983 for CMC/Alg and CMC/Alg/GO adsorbents, respectively. Therefore, it was the most suitable model for kinetic data fitting. Monolayer adsorption capacity for CMC/Alg and CMC/Alg/GO adsorbents was 91.74 and 96.15 mg/g, respectively, which showed the improvement of the adsorption by incorporation of GO. Thermodynamic investigation showed that the adsorption process is spontaneous and endothermic. Finally, it can be concluded that the synthesized nanocomposite hydrogel can be used as an effective adsorbent for the decontamination of methylene blue dye. Manuscript profile -
Open Access Article
110 - Methylene blue removal in a batch reactor using synthesized CdO nanoparticles
Kasra Behzad Parisa Attarzade Afarin BahramiIn the present research, CdO nanoparticles were synthesized using the chemical reduction method at six different temperatures. Due to have different calcination temperature, the nanoparticle were synthesized in different sizes. Structural and optical properties of nanop MoreIn the present research, CdO nanoparticles were synthesized using the chemical reduction method at six different temperatures. Due to have different calcination temperature, the nanoparticle were synthesized in different sizes. Structural and optical properties of nanoparticles were characterized using XRD and UV-Vis spectroscopy. Based on the results, the CdO nanoparticles have cubic structure with the particles size of 27 – 60 nanometer. To investigate the photocatalytic properties of CdO nanoparticles, dye degradation effect in the presence of CdO nanoparticles and UV beam was study in a batch reactor as a function of time at three different pH values. Studies have shown that the optical absorption was decrease as a function of time. The photocatalytic reaction revealed that the dye degradation in methylene blue was speeded up with increasing the pH value. Manuscript profile -
Open Access Article
111 - Preparation of a simple and low cost catalyst with sodium dodecyl sulfate modified carbon paste electrode containing nickel for electrocatalytic oxidation of ethylene glycohol
بنفشه نوروزی زهرا شاکریIn this research work, sodium dodecyl sulfate (SDS( was deposited on the surface of carbon paste electrode by dropping method. Then, the modified carbon paste electrode with SDS containing nickel (Ni/SDS) was prepared by inserting the modified electrode in a solution co MoreIn this research work, sodium dodecyl sulfate (SDS( was deposited on the surface of carbon paste electrode by dropping method. Then, the modified carbon paste electrode with SDS containing nickel (Ni/SDS) was prepared by inserting the modified electrode in a solution containing nickel nitrate for 5 minutes and sweeping of the consecutive potential in sodium hydroxide solution. Also, considering the importance of using ethylene glycohol as a proposed source instead of hydrogen and because of its slow kinetic on the bare carbon paste electrode, its oxidation investigated on the above modified electrode. The results showed the electrocatalytic oxidation of ethylene glycol on the surface of carbon paste electrode modified with SDS/Ni. The effect of various parameters on the efficiency of modified electrode was investigated and the optimal conditions were determined. Finally, the reaction rate constant between the chemical redox centers at the modified electrode surface and ethylene glycol was calculated. Simplicity, low cost, and high sensitivity are the outstanding features of the electrode. Manuscript profile -
Open Access Article
112 - Biodesulphurization of dibenzothiophene as a sulphur Model compound in heavy fuel oil by supported bacterial strain on polyethylene
Babak Ghorbani Barnaji Soroor Sadeghi farhad salimiA new biodesulfurization method has been considered using Pseudomonas aeruginosa supported on polyethylene (PE) for biodesulfurization (BDS) of dibenzothiophene (DBT) as heavy fuel oil sulphur compound model. The obtained results according to Spectrophotometric analysis MoreA new biodesulfurization method has been considered using Pseudomonas aeruginosa supported on polyethylene (PE) for biodesulfurization (BDS) of dibenzothiophene (DBT) as heavy fuel oil sulphur compound model. The obtained results according to Spectrophotometric analysis at 325 nm showed that 90.54 % of DBT at the primary concentration about 5 (mg.L-1), pH=7, biocatalyst dosage of 0.1 g, in 37 °C and after 90 min of contact time has been removed. These optimum conditions have been applied for heavy fuel oil (mazut) samples and the biodegradation of their total sulphur content (TSC) has been investigated by X- ray fluorescence spectrometer (XRF). The obtained results revealed that 33.075 % of total sulphur content from mazut sample has been removed. Kinetic study predicted the chemisorption process as the rate determining step, as it followed the pseudo-second-order rate equation. The data for DBT adsorption on biocatalyst fitted to the Freundlich isotherm model. Morphology and surface functional groups of the biocatalyst have been investigated by SEM and FT-IR, respectively. Manuscript profile -
Open Access Article
113 - Core–shell TiO2 coated magnetic mesoporous Nanocomposite modified with a surfactant for the removal of methylene blue dye from environmental water samples
maryam ezoddin laleh adl nasabIn this study, a core–shell TiO2 coated magnetic mesoporous nanocomposite (Fe3O4@MCM@TiO2) was synthesized and modified with an anionic surfactant for the removal of a cationic dye, (methylene blue) from well and wastewater samples. Fe3O4 was loaded on mesopore (M MoreIn this study, a core–shell TiO2 coated magnetic mesoporous nanocomposite (Fe3O4@MCM@TiO2) was synthesized and modified with an anionic surfactant for the removal of a cationic dye, (methylene blue) from well and wastewater samples. Fe3O4 was loaded on mesopore (MCM-41) and coated with TiO2 as a nano platelet shell. An anionic surfactant, sodium dodecyl sulfate (SDS), was used to modify the adsorbent through hemimicelles/admicelles process and also to prevent the agglomeration of the adsorbent. The surface chemical characteristics and morphology of the prepared Fe3O4@MCM@TiO2were studied by the Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), Field emission scanning electron microscope (FESEM), and Brunauer-Emmett-Teller (BET) analytical techniques. The effect of effective parameters for the removal of methylene blue was also studied. The adsorption data fitted with the Langmuir model showed a short equilibrium time with the maximum capacity uptake of 227.27 mg g-1. This method was successfully applied for removal of methylene blue in environmental water samples with an appropriate recovery in the range of 89.0 and 94.2%. Manuscript profile -
Open Access Article
114 - Electrically Conductive nanocomposite foam with electromagnetic wave absorption and shielding ability based on EPDM rubber and MWCNT: Effect of foam morphology and electrical conductivity
Hasti Bizhani Ali Asghar KatbabIn the present study, electromagnetic wave absorber nanocomposite foams based on Ethylene-propylene-diene-monomer (EPDM) and multi-walled carbon nanotubes (MWCNT) were fabricated using a chemical blowing agent and compression molding. Foam nanocomposites showed lower el MoreIn the present study, electromagnetic wave absorber nanocomposite foams based on Ethylene-propylene-diene-monomer (EPDM) and multi-walled carbon nanotubes (MWCNT) were fabricated using a chemical blowing agent and compression molding. Foam nanocomposites showed lower electrical percolation threshold and higher electromagnetic wave absorption compared to their solid counterparts. Above the percolation threshold, the foam nanocomposites show a shielding effectiveness of 28-45 dB in the X-band frequency range (8.2- 12.4 GHz). It was shown that the dominant shielding mechanism is absorption for the prepared foams. Also, the electromagnetic shielding effectiveness of the foam was insignificantly affected under repeated bending. Our results indicate the high potential of cross-linked EPDM/MWCNT foams as a lightweight electromagnetic wave absorber with high flexibility and deformability. Manuscript profile -
Open Access Article
115 - Homogenizing Electric Field of Lightning in L.P.S. XLPE Descending Conductor
Ali Amirjalali Seyed Mohammad Hassan Hosseini -
Open Access Article
116 - Molecular Identification of Native Pseudomonas Strains with Polyethylene Degradation Ability from Soil
Hanieh Shahreza Abbas Akhavan Sepahi farzaneh hosseini Ramezan Ali KhavarinejadBackground & Objectives: Nowadays, high consumption plastics such as polyethylene are recognized as one of the major environmental pollutants by the World Environment Organization. The aim of this study was to isolate MoreBackground & Objectives: Nowadays, high consumption plastics such as polyethylene are recognized as one of the major environmental pollutants by the World Environment Organization. The aim of this study was to isolate and identify native Pseudomonas bacterial strains with the polyethylene packaging degradation ability. Materials & Methods: In order to conduct this study, soil samples were collected. In order to isolate the isolates with polyethylene degradation ability, two methods of direct culture and culture by pre-enrichment method were used. After culturing the bacteria in MSM medium and examining the percentage of plastic weight loss, the superior strain was selected for DNA extraction and PCR of alk-B gene. PCR results were sequenced and examined phylogenetically. Results: The results of the present study showed that the percentage of degradation of polyethylene by Pseudomonas strains was 7.2% at most and 4.5% on average. Also, all purified degrading bacteria in this study harbored alk-B gene. Conclusion: The results showed that the degradation of polyethylene materials can be significantly accelerated by using and optimizing bacteria isolated from soil. It seems that by promoting genetic methods based on the genome of bacteria, especially the strain of Pseudomonas aeruginosa, it is possible to develop methods during which all commonly used types of polyethylene are degraded in a much shorter time than normal. Manuscript profile -
Open Access Article
117 - Effect of silver nanoparticles on vegetative growth indices and physiological parameters of canola (Brassica napus L.) under in vitro condition
R. Razavi zadeh Z. Tabatabaei F. RostamiEthylene in plant tissue culture produces and accumulates under in vitro condition. It causes negative effects on growth of plants. Silver ion is known as an inhibitor of ethylene action under in vitro condition. In this study the effect of silver nanoparticle (0, 0.5, MoreEthylene in plant tissue culture produces and accumulates under in vitro condition. It causes negative effects on growth of plants. Silver ion is known as an inhibitor of ethylene action under in vitro condition. In this study the effect of silver nanoparticle (0, 0.5, 1, 1.5 and 2 mg/L) was evaluated on canola under in vitro growth medium. After 28 days, the effects of silver nanoparticle were studied on growth, and content of photosynthetic pigments and proline in roots and shoots. The percentage of seed germination was decreased 40% at 2 mg/L of nanosilver concentration in comparison with the control. The nanosilver had significant effect on root height while decreased shoot height at all concentrations in comparison with the control. The enhancement of shoot weight, root weight and carotenoid content was 47, 73 and 76 percent under 1.5 mg/L of nanosilver treatment. The total chlorophyll and flavonoid content did not show any significant changes. Treatment of the plants with nanosilver decreased significantly anthocyanin pigment and some elements content in 1 and 1.5 mg/L of nanosilver in shoots. The proline content of shoot was decreased in all nanosilver treatments whereas did not show significant different in roots. In this study, it seems that nanosilver at 1.5 mg/L concentration was the best treatment as an ethylene inhibitor because of its positive effect on oxidative stress decrease and shoots weight increase in canola plant. Manuscript profile -
Open Access Article
118 - Effect of concentration and the time of foliar application of Epibrassinolid on flower buds and fruit abscission and some morphological and physiological parameters of pistachio tree (Pistacia vera L. cv. “Ahmad- Aghai”)
فرشته برازش حکیمه علومی فاطمه نصیبی خسرو منوچهری کلانتریFlower buds and fruit abscission, production of blankness, non-split and deformed nuts are the most important physiological disorder in pistachio trees. The importance of plant growth regulators in alleviation of these disorders has been proved. In this project the effe MoreFlower buds and fruit abscission, production of blankness, non-split and deformed nuts are the most important physiological disorder in pistachio trees. The importance of plant growth regulators in alleviation of these disorders has been proved. In this project the effects of Epibrassinolid on alleviation of some of these problems in “Ahmad- Aghai” cultivar has been studied. The experiment was performed as factorial based on completely randomized design with 3 replicates in a commercial orchard at Rafsanjan (Kerman Province). The treatments consist of 0 (control), 0.5 and 1 (mg ml-1) epibrassinolid treatment in two stages (before and after full bloom). 0.5 (mg ml-1) epibrassinolid decreased the bud and fruit abscission while increased the fresh and dry weight and yield of branches. Epibrassinolid in the first stage decreased the blank fruit production and increased the split fruits. Epibrassinolid treatment obviously decreased the amount of ethylene in fruits while it had no significant effect on morphological characteristics. 0.5 mg ml-1 epibrassinolid was the best concentration and the first stage (a week before full bloom) was the best time for treatment in Ahmad- Aghai cultivar trees. Manuscript profile -
Open Access Article
119 - Effect of irrigation and different Mulch on some vegetative and reproductive characteristics of starch (Zinnia elegans)
Asiyeh ghattaly رامین بابادائی سامانیZinnia flowers have many usages in landscaping but because of the recent drought the quality and quantity of the flowers have reduced. So, the aim of the current research is to evaluate the effects of different mulches and irrigation intervals on some of the vegetative MoreZinnia flowers have many usages in landscaping but because of the recent drought the quality and quantity of the flowers have reduced. So, the aim of the current research is to evaluate the effects of different mulches and irrigation intervals on some of the vegetative and reproductive features of the plant (Zinnia Elegans). This experiment was accomplished in the factorial basis and in the form of random block plan in three replications. Factors include three levels of irrigation (3, 5, and 7 days) and four types of mulches (Dark polyethylene, transparent polyethylene, woodchips and mulch less). The thickest diameter of Zinnia related to the usage of woodchips and 3-day irrigation. Using the same mulch and different irrigation (5-day) was not considerably different. The highest Zinnia was seen when the woodchips and 3-day irrigation applied. The lowest height was in the absence of mulches and 5/7-day irrigation. The branches increased mostly when woodchips and 3-day irrigation applied. The usage of polyethylene and 3-day irrigation was not considerably different. The heaviest dry/wet root related to the usage of woodchips and 3-day irrigation. The dry and wet weight of the root reduced considerably in the absence of mulches and 5/7-day irrigation. The heaviest dry and wet shoot flowers using 3-day irrigation was more than other treatments. The most leaf was seen when the woodchips or transparent polyethylene were applied with the 3-day irrigation. The chlorophyll content increased mostly when woodchips was applied with the 7-day irrigation. Manuscript profile -
Open Access Article
120 - Investigation of Polyethylene Mulch on Improvement of Tomato Water Use Efficiency using AquaCrop Model
razieh Eskandaripour afshin khorsand vahid rezaverdinejad kamran zeinalzazdeh amir NorjooIn this study, the Aquacrop model was evaluated to predict the crop yield and the water use efficiency of tomato in climatic conditions Kahriz region, and use mulch cover was modeling. The research was carried out at split plot factorial experiment based on randomized d MoreIn this study, the Aquacrop model was evaluated to predict the crop yield and the water use efficiency of tomato in climatic conditions Kahriz region, and use mulch cover was modeling. The research was carried out at split plot factorial experiment based on randomized design. The factors of between-row spacing (100 and 120cm), in-row spacing (30 and 40cm) and black plastic were studied. The treatment of black plastic were: full ridge and half furrow were covered by mulch; full furrow and half ridge were covered by mulch and control (no mulch). Every plot was irrigated separately. The model was calibrated by the use of first year’s data, and as a result on the base of R2 (0.99) and NRMSE (0.19). Efficiency parameters, it is obvious that Aquacrop appropriately simulates the crop yield, WUE and soil water content of the root zone for tomato under different planting densities and three types of mulch. Manuscript profile -
Open Access Article
121 - Study the Ethephon application and male inflorescence detopping on quality and quantity traits of maize
Gholamreza Pakseresht Babak PasariThis experiment was conducted to study the ethephon application and male inflorescence topping on the quality and quantity characters of maize at the research farm of agriculture faculty, Islamic Azad university- Sanandaj branch during 2016-2017 year. The research was c MoreThis experiment was conducted to study the ethephon application and male inflorescence topping on the quality and quantity characters of maize at the research farm of agriculture faculty, Islamic Azad university- Sanandaj branch during 2016-2017 year. The research was carried out as split plot in a completely randomized block design with three replications. In this experiment, ethephon spraying was used as the main factor in six different levels (control: distilled water, 0.5, 1, 1.5, 2, 2.5 liter per hectare), and the sub factor was the removal of tassels in two levels (non-removal: control and removal of tassel or male inflorescence). The results showed that the effect of ethephon was significant on characters as: dry weight (leaf, stem, cob with its leaves and seed), number of rows per cob, number of seeds per row, 1000 seed weight, grain yield, biological yield, protein and oil percentage. In this experiment, the maximum grain yield was obtained by ethephon at 0.5 liter per hectare, which increased by 34.56% compared to control. Maximum biological yield was obtained from 0.5 and 1.5 liters per hectare, which increased by 40.89% and 41.22%, respectively, in comparison with control. The effect of tassel removal on all traits was significant. The maximum grain yield and biological yield were obtained from tassel removal, which was more by 14.83 and 11.13%, respectively, compared to control. The results of interaction effects were shown that the highest grain yield and biological yield were obtained from 0.5 and 1.5 liter ethephon with tassel removal, respectively. Manuscript profile -
Open Access Article
122 - Responses of Almond Genotypes to Osmotic Stress Induced In Vitro
S. Karimi A. Yadollahi K. Arzani -
Open Access Article
123 - Study of Changes in Soil Moisture and Salinity Under PlasticMulch and Drip Irrigation in Pistachio Trees
N.. Sedaghati A. Alizadeh H. Ansari S. J. Hosseinifard -
Open Access Article
124 - Physiological and Morphological Responses of Almond Cultivars under In Vitro Drought Stress
Ehsan Akbarpour Ali Imani Shahin Ferdowskhah Yeganeh -
Open Access Article
125 - Synthesis and characterization of poly (AAm-co-AAc)/NaA nanocomposite and removal of methylene blue with it
Mojgan Zendehdel Abolfazl Barati Haniyeh Alikhani -
Open Access Article
126 - Chemical cross linking versus high energy electron beam cross linking of HDPE: electrical properties study
Nooredin Goodarzian Mohammad Amin Shamekhi -
Open Access Article
127 - Synthesis and application of chelating resins based on polyacrylonitrilediethylenetriamine for metal ions removal
Nasser Arsalani Elnaz Ghasemi Roghayeh Rakh Ali Akbar Entezami -
Open Access Article
128 - Thermal and catalytic degradation study of polyethylene and investigation the catalytic effect of X-Zeolite and Silica-Alumina on degradation kinetic
Mohammad Taghi Taghizadeh Parinaz Seifi-Aghjekohal Ali Bahadori, Banafsheh Zeraatkar -
Open Access Article
129 - Selecting Drought Resistant Sweet Corn Cultivars Based on Germination Percentage and Seedling Proline Content under Osmotic Potentials Stress
Ali Shahriari Adam B Puteh Ghizan B Saleh Anuar B Abdul Rahim -
Open Access Article
130 - The effects of drought stress on seed germination and some of morphological and physiological traits in Trachyspermum ammi
امین باقی زاده Malihe Afroushte Baratali FakheriIn order to assess the response of ajowan to drought stress that induced by PEG 6000 on germination and growth stages, two separate experiments that in each useed completely randomized design with three replications were done. In first experiment, the response of germin MoreIn order to assess the response of ajowan to drought stress that induced by PEG 6000 on germination and growth stages, two separate experiments that in each useed completely randomized design with three replications were done. In first experiment, the response of germination of ajowan seeds was investigated to different levels of drought stress include osmotic potential of zero (control), - 1/5, -2, -2/5 and -3bar that prepared by PEG6000. The second experiment was same first, but in this experiment, morphological and physiological characters of ajowan in different level of drought stress were evaluated. Results of Anova at our data showed that drought stress has significant effect (p≤0/01) on germination characters such as germination percentage, germination rate, height of plumule, length of radicle, dry weight of radicle and plumule. Mean comparison of treatments showed, with increase in drought stress, all the above characters have been reduced. Morphological traits such as leaf area, fresh and dry weight of shoot and root and shoot dry weight ratio to root decreased under drought stress. Also, drought stress had a significant effect on the amount of proline and soluble sugars in the aerial part and root. Comparison of mean of treatments showed that, with increasing stress, the amount of proline and soluble sugars in the shoot and root increased (p≤0/01). The results showed, that germination parameters were reduced by drought stress. Ajowan showed differently responce to tolerate drought stress. Ajowan plant for tolerance to drought stress has different reactions, including reduction of traits such as leaf area and dry and fresh weight of aerial part and root and increase traits such as proline content and soluble sugars. Manuscript profile -
Open Access Article
131 - The effects of drought stress on seed germination and some of morphological and physiological traits in Trachyspermum ammi
A. Baghizadeh M. Afroushte, B. FakheriIn order to assess the response of ajowan to drought stress that induced by PEG 6000 on germination and growth stages, two separate experiments that in each useed completely randomized design with three replications were done. In first experiment, the response of germin MoreIn order to assess the response of ajowan to drought stress that induced by PEG 6000 on germination and growth stages, two separate experiments that in each useed completely randomized design with three replications were done. In first experiment, the response of germination of ajowan seeds was investigated to different levels of drought stress include osmotic potential of zero (control), - 1.5, -2, -2.5 and -3bar that prepared by PEG6000. The second experiment was same first, but in this experiment, morphological and physiological characters of ajowan in different level of drought stress were evaluated. Results of Anova at our data showed that drought stress has significant effect (p≤0/01) on germination characters such as germination percentage, germination rate, height of plumule, length of radicle, dry weight of radicle and plumule. Mean comparison of treatments showed, with increase in drought stress, all the above characters have been reduced. Morphological traits such as leaf area, fresh and dry weight of shoot and root and shoot dry weight ratio to root decreased under drought stress. Manuscript profile -
Open Access Article
132 - Effects of Osmotic Potential on Germination and some Characters in cimin (Cuminum Cyminum ) Genotypes
M. kakaei D. Kahrizi M. MansouriTo control water potential in seed germination studies osmotic solution of polyethylene glycol (PEG) are commonly used environmental stress, such as drought and (Osmotic) stress can play an important role in disturbing different stage of medical plant growth, developmen MoreTo control water potential in seed germination studies osmotic solution of polyethylene glycol (PEG) are commonly used environmental stress, such as drought and (Osmotic) stress can play an important role in disturbing different stage of medical plant growth, development, and especially seed germination in arid and regions high percent of medicines are used for people have plant origin. With attention to the development of drought area and the shortage of agricultural area, it comes in to great importance to make use of drought tolerant plant an experiment was carried out in order to study the effect of different drought (Osmotic) levels on Cuminum Cyminum in germination in a completely randomized design with three replications. Drought (Osmotic) levels applied were zero (Control), 5%, 10% and 15% (0, -0.03, -0.19 and -0.41 Mpa). The purpose of this study was to determine genotype in PEG solution had a detrimental effect on germination percentage and germination rate. Manuscript profile -
Open Access Article
133 - Separation of Trace Amount Cu (II) Using Octadecyl Silica Membrane Disks - Nano Graphene Modified N, N -disalicylideneethylenediamine
Ali Moghimi -
Open Access Article
134 - Extraction and Separation of Trace Amounts Lead (П) in Water Samples Using Nano Polyacrylonitril Modified Ethylendiamins
Ali Moghimi Hamid Hashemi-Moghaddam -
Open Access Article
135 - Study of the Adsorption Performance of a Cationic Dye onto a Moroccan Clay
Brahim Abbou Imane Lebkiri Hanae Ouaddari lamya kadiri abdelkarim ouass Abdlhay Elamri Jaouad Bensalah Amar Habsaoui Ahmed Lebkiri El Housseine Rifi -
Open Access Article
136 - Applying of highly Ultraviolet reflective materials on cotton- nylon 66 fabric for camouflage of military targets in snowy areas
عباس بشارتی سیدانی فرید اخوان صدرIn this study, an appropriate coating was prepared by increasing ultraviolet reflectance of cotton-nylon 66 fabric for camouflage of military targets in the snowy areas. For this purpose, first several highly UV reflective compounds such as BaSO4, SiO2 and Polytetrafluo MoreIn this study, an appropriate coating was prepared by increasing ultraviolet reflectance of cotton-nylon 66 fabric for camouflage of military targets in the snowy areas. For this purpose, first several highly UV reflective compounds such as BaSO4, SiO2 and Polytetrafluoroethylene (PTFE) were applied on the fabric by using citric acid and sodium hypophosphite (SHP) and then grafted by heat treatment. The effects of the effective parameters including type and amount of compounds, amount of citric acid and SHP and temperature of heat treatment were investigated. Reflectance behavior and surface morphology of the fabric were studied by UV-Vis reflectance spectroscope and SEM, respectively. Results indicated that UV and visible reflectance increases up to 85% with applying of BaSO4 particles on the fabric. Thus a suitable fabric coating has been achieved for camouflage in the snowy areas. Excellent rubbing and washing durability of grafted BaSO4 particles on the fabric demonstrated that these particles have been attached on the fibers of the fabric with chemical bands, especially on the cotton fibers. Moreover, the used method in this study does not have any significant effect on the cotton and nylon 66 fibers structure. Parameters such as citric acid and SHP concentration and heat treatment temperature have an optimum amount and thus, using them more than this amount leads to decreasing UV and visible reflectance of applied fabric. Manuscript profile -
Open Access Article
137 - Effect of silver nanoparticles on the crystallinity of polyethylene
مریم ابارشی سکینه مسگر شاهرودیIn the current research, the effect of silver (Ag) nanoparticles on the crystallinity of polyethylene was investigated. For this purpose, Ag nanoparticles were synthesized using chemical reduction method and characterized by X-ray diffraction (XRD), UV–visible spe MoreIn the current research, the effect of silver (Ag) nanoparticles on the crystallinity of polyethylene was investigated. For this purpose, Ag nanoparticles were synthesized using chemical reduction method and characterized by X-ray diffraction (XRD), UV–visible spectroscopy, and transmission electron microscopy (TEM). The mean particle size of Ag NPs was determined about 21.7 nm. The polyethylene-silver Nano composites (PESNs) containing different Ag contents (5, 10, 20 and 30 wt%) were fabricated by mechanical milling method. After the characterization of samples by XRD and scanning electron microscopy (SEM), effect of Ag nanoparticles on the crystallinity of polyethylene was investigated by Nara and Komiya method. Results show that the crystallinity of polyethylene increases from 63.64% to 77.67% as Ag NPs content increases from 0 to 30%. Manuscript profile -
Open Access Article
138 - Investigation of mechanical and biological properties of functionalized polycaprolactone and polyethylene glycol diacrylate based scaffold reinforced with hydroxyapatite
نرجس کوپائی Akbar KarkhanehThe purpose of this study is synthesised of functionalized polycaprolactone and polyethylene glycol diacrylate based scaffold in the presence of hydroxyapatite (HA) particles and investigated of mechanical and biological properties of scaffolds. . At the first step, PCL MoreThe purpose of this study is synthesised of functionalized polycaprolactone and polyethylene glycol diacrylate based scaffold in the presence of hydroxyapatite (HA) particles and investigated of mechanical and biological properties of scaffolds. . At the first step, PCL diol was acrylated with acryloyl chloride and confirmed using fourier transform infrared (FTIR).Then, the scaffolds were synthesized by radical crosslinking reaction of polycaprolacton acrylate and polyethylene glycol diacrylate (PEGDA) in the presence of hydroxyapatite (HA) particles and particulate technique with sodium chloride. The prepared samples were characterized using techniques such as scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FTIR), and dynamic mechanical thermal analysis (DMTA). Results show that increasing the ratio of PEGDA to polycaprolactone diacrylate (PCLDA) led to increase of tan δ peak and decrease of compressive modulus of the network, respectively. It was found that the incorporation of HA particles with the polymer matrices resulted in an increased of compressive modulus and a decrease of tan δ peak. Cytocompatability of the scaffolds were assessed by direct contact test and staining cell. Results indicated no toxicity, and cells attached and spread on the pore walls offered by the scaffols. Thus, the results indicated that the PCLDA/PEGDA/HA scaffolds have the potential of being used as promosing substrates in bone tissue engineering. Manuscript profile -
Open Access Article
139 - Corrosion Inhibition of Polyethylene Glycol on Carbon Steel in Sulfuric Acid Solutions and its Synergism with Schiff Base
sina jahadi mojtaba nasr esfahaniThe inhibiting action of Schiff base and polyethylene glycol (Salpn-PEG) complexes on low-carbon steel corrosion in 0.5 M sulfuric acid was examined using weight loss, potentiodynamic polarization and spectroscopy electrochemical impedance (EIS) techniques. Schiff base MoreThe inhibiting action of Schiff base and polyethylene glycol (Salpn-PEG) complexes on low-carbon steel corrosion in 0.5 M sulfuric acid was examined using weight loss, potentiodynamic polarization and spectroscopy electrochemical impedance (EIS) techniques. Schiff base N, N’-bis(salicyladehyde)-1,3-diaminopropane (Salpn) was synthesized by salicylaldehyde and 1,3- diaminopropane. PEG/Salpn complex with weight ratio 1:4, 2:4 and 3:4 of Salpn and PEG were prepared in methylene chloride solvent by a simple deporotonation procedure. Obtained Results show that PEG/IMZ complex is very effective corrosion inhibitor of carbon steel in the acid environment in compare with PEG, Salpn and noncomplex form of them. Maximum corrosion inhibition was obtained for PEG/Salpn complex with weight ratio 1:4 of Salpn and PEG. The inhibition efficiency increased with the increase in the temperature up to 45°C and decrease in higher temperatures. Results from all the corrosion tests were examined using SEM and are in reasonable good agreement. Adsorption thermodynamic data (〖K 〗_ads and 〖∆G〗_ads ) was calculated using the weight loss data Manuscript profile -
Open Access Article
140 - Evaluation of the photocatalytic activity of ZnFe2O4-TiO2 composite coating elaborated by flame spraying process
امیرحسین نویدپور مهدی صالحی مهدی امیرنصر حمید رضا سلیمی جزی مهران آذرپور سیاهکلی یعقوب کلانتریAmong various techniques which have been used for degradation of chemical pollutants, advanced oxidation processes (such as photocatalytic process) have received attention due to their specific properties. In this investigation, ZnFe2O4-10wt% TiO2 composite film was ela MoreAmong various techniques which have been used for degradation of chemical pollutants, advanced oxidation processes (such as photocatalytic process) have received attention due to their specific properties. In this investigation, ZnFe2O4-10wt% TiO2 composite film was elaborated using flame spraying process. Powders of titania (TiO2: 75vol. % anatase, 25vol. % rutile) and zinc ferrite (ZnFe2O4), which was synthesized by mechanical alloying process, were mixed together (weight ratio of 1:9) and deposited on stainless steel 316 substrate. In order to evaluate the structure, morphology, and photo-adsorption ability of the coating, X-ray diffractometer (XRD), scanning electron microscopy (SEM), and UV-VIS-NIR spectroscopy were used, respectively. Photocatalytic performance of the deposited film was studied by bleaching of aquatic methylene blue solution with the concentration of 5 mg/Lit. The results showed that the composite coating, which was elaborated by flame spraying, possesses relatively good photo-adsorption ability as well as photocatalytic activity for photodegradation of methylene blue (under visible light irradiation). Manuscript profile -
Open Access Article
141 - Functionalization and stable synthesis of PET-AuNPs nanocomposites by sonochemistry and electrochemical quantitative and qualitative studies with modified AuNPs-PET / CNT / Au electrode
Javad Moradpour Hossein Peyman Hamideh RoshanfekrPolyethylene terephthalate is used in various industries, but due to the lack of functional groups on the surface, it is limited in use and needs surface modification to improve the application. In this study, the surface of PET fibers was first functionalized with carb MorePolyethylene terephthalate is used in various industries, but due to the lack of functional groups on the surface, it is limited in use and needs surface modification to improve the application. In this study, the surface of PET fibers was first functionalized with carboxylic acid groups. Then, in an alkaline medium, gold nanoparticles were synthesized sonochemically on their surface, and the effect of parameters affecting the size and density of nanoparticles was investigated and optimized (temperature, power of ultrasonic device, and pH). The ability of PET-AuNPs nanocomposites to remove industrial dyes from the environment was used, and the removal and measurement of methyl orange dye from aqueous media were used. The effect of initial dye concentration, time, and pH was investigated and optimized. In quantitative electrochemical dye measurements, the modified AuNPs-PET / CNT / Au electrode had a linear response in the range of 20 to 60 μM. The detection limit of this electrode was 55 μM, and the effect of potential scanning speed on peak flow and the effect of solution pH were investigated. Adsorption equation studies have shown that adsorption follows the obedience isotherm. Manuscript profile -
Open Access Article
142 - In vitro investigation of the GdF3:Bi nanoparticles synthesized via hydrothermal method as the dual MRI-CT contrast agent
Mohammad Abbasi رضا احمدی Amirhossein Moghanian Aazam Jannati EsfehaniIn the present study, the Bismuth doped GdF3 nanoparticles were synthesized via the hydrothermal method and the effect of temperature, time and NH4F concentration was investigated. The Poly Ethylene Glycol was used as the surfactant. The phases characterization was indu MoreIn the present study, the Bismuth doped GdF3 nanoparticles were synthesized via the hydrothermal method and the effect of temperature, time and NH4F concentration was investigated. The Poly Ethylene Glycol was used as the surfactant. The phases characterization was inducted via XRD, FE-SEM and EDS techniques. The in vitro investigation of the samples as the contast agents were performed using MR and CT imaging. the sample synthesized at 180 oC,, 6 hours and the NH4F concentration twice the Stoichiometric concentration that had the semi spherical structure with mean size lower than 100 nm was the suitable sample and the in vitro studies show that the particles act as an excellent CT contrast agent and also as an effective MRI contrast agent at concentrations between 22.5 and 180 mM. Briefly, The use of Bismuth dopant ant GdF3 nanoparticles was successfully performed and The particles can used as the potential MRI-CT contrast agents. Manuscript profile -
Open Access Article
143 - The Study Biocompatibility Bone Marrow Stromal Cells by Interactivity Scaffold of Chitosan/Poly Ethylene Oxide
زهره یوزباشی غلامرضا کاکا ویدا حجتی عبدالحسین شیرویSeveral studies have been performed to achieve a BioCompatibility scaffold with stem cells. The aim of this study was to present biodegradable scaffold of chitosan (Cs)/poly ethylene oxide (PEO) and studies to evaluate the ability of growing, proliferation, undifferetat MoreSeveral studies have been performed to achieve a BioCompatibility scaffold with stem cells. The aim of this study was to present biodegradable scaffold of chitosan (Cs)/poly ethylene oxide (PEO) and studies to evaluate the ability of growing, proliferation, undifferetation and cell death of bone marrow stromal cells (BMSCs) on them. At first, Cs/PEO scaffold made in 3, 1 ratio. This scaffold lies on 1% gelatin at 24 plates and then sterilized. BMSCs extract from adult rats femur and after three passages were implated in the empty house plate as control BMSCs and also on scaffold. The rate of cell proliferation, undifferentiation, and cell death were studied at two, four and six days after 3rd passage in plate. The results showed that the morphology of cells maintained on Cs/PEO scaffold and was simiar to control group. Studies showed that the percentage of differentiation of BMSCs and cell death on scaffold of six day was similar to control. Proliferation, undifferentiation and cell death of BMSCs on biodegradable Cs/PEO scaffold result a model of scaffold that can be used in tissue engineering and cell therapy. Manuscript profile -
Open Access Article
144 - The Effects of Adding Multi-Walled Carbon Nanotubes (MWCNT) on the Mechanical Properties and Biocompatibility of The Ultra-High Molecular Weight Polyethylene Polymer Matrix (UHMWPE) in Joint Replacements
Mohsen Fakoori Mohammad Taghi khorassani Mehdi kamali dolat abadiUltra high molecular weight polyethylene (UHMWPE) has been used as the material of choice in joint replacement prosthesis as an articular component for several years. Despite its distinct physical and chemical characteristics, the lifespan of this polymer is limited. On MoreUltra high molecular weight polyethylene (UHMWPE) has been used as the material of choice in joint replacement prosthesis as an articular component for several years. Despite its distinct physical and chemical characteristics, the lifespan of this polymer is limited. One approach to increase the lifespan and mechanical properties is the use of multi-walled carbon nanotubes (MWCNT). Multi-walled carbon nanotubes are promising candidates for use as a filler phase in polymers due to their excellent mechanical properties and excellent surface-to-volume ratio. In this research, the addition of 0.1% by weight of multi-walled carbon nanotubes functionalized with carboxyl groups was investigated on the mechanical properties and biocompatibility of the UHMWPE base matrix and its comparison with the pure UHMWPE sample. Fourier transform infrared spectroscopy (FTIR) confirmed the presence of characteristic peaks of UHMWPE and carbon nanoparticle in the matrix. X-ray diffraction (XRD) showed an increase in the intensity of the characteristic peaks of the composite compared to the pure sample. The differential scanning calorimetry test (DSC) showed an increase of about 10% in the crystallinity of the composite containing carbon nanotubes (PE/MWCNT). The dynamic mechanical thermal analysis (DMTA) showed an increase of about 22% in the storage modulus compared to the control sample, and finally, the cell viability through the cell culture test in the PE/MWCNT composite showed a 15 % increase in cell viability. According to mechanical and biocompatibility results, the composite sample can perform better in terms of mechanical loads in bearing surfaces compared to pure UHMWPE. Manuscript profile -
Open Access Article
145 - بررسی آزمایشگاهی اثر نانوذرات جامد هیبریدی نانولوله کربنی و اکسید منیزیم بر هدایت حرارتی اتیلن گلیکول
مسعود وفایی مسعود افرند در دهه اخیر نانو سیالات پیشرفته ی جدیدی که از ذرات مختلف تشکیل شده اند مورد توجه محققان قرار گرفته اند. این گونه از نانوسیالات، که به نانوسیالات هیبریدی معروف هستند، عموما از ترکیب دوگونه مختلف نانوذرات ترکیب شده در سیال پایه به دست می آیند. در این مقاله، بررسی آ More در دهه اخیر نانو سیالات پیشرفته ی جدیدی که از ذرات مختلف تشکیل شده اند مورد توجه محققان قرار گرفته اند. این گونه از نانوسیالات، که به نانوسیالات هیبریدی معروف هستند، عموما از ترکیب دوگونه مختلف نانوذرات ترکیب شده در سیال پایه به دست می آیند. در این مقاله، بررسی آزمایشگاهی اثر نانوذرات جامد هیبریدی نانولوله کربنی و اکسید منیزیم بر ضریب هدایت حرارتی اتیلن گلیکول ارائه شده است. آزمایشها در بازه دمایی 25 تا 50 درجه سانتی گراد برروی نمونه هایی با کسر حجمی 05/0٪، 1/0٪، 15/0٪، 2/0٪، 4/0٪ و 6/0٪ انجام شد. اندازه گیری ها نشان داد که با افزایش مقدار نانوذرات و افزایش دما، ضریب هدایت حرارتی تا 3/23٪ افزایش می یابد. در پایان یک رابطه تجربی جدید به منظور پیش بینی ضریب هدایت حرارتی ارائه شد و تحلیل حاشیه انحراف برای آن پیشنهادی انجام شد. نتایج این تحلیل ها نشان داد که حداکثر حاشیه انحراف 95/0٪ بود که بیانگر دقت قابل قبول رابطه پیشنهادی برای پیش بینی مقادیر ضریب هدایت حرارتی نانو سیال است Manuscript profile -
Open Access Article
146 - بررسی تجربی اثر پارامترهای جوشکاری صفحه داغ بر چقرمگی شکست و استحکام کششی درز جوش قطعات ترموپلاستیکی
امیر هوشمندپور عبدالمحمد رضاوند مهدی نظری مرویانهدف این تحقیق، بررسی استحکام کششی و چقرمگی شکست قطعاتی از جنس پلیاتیلن چگالی بالا است که در دما، فشار و زمان های مختلف و با روش جوشکاری صفحه داغ به یکدیگر جوشکاری شدهاند. نمونههای استاندارد طبق استاندارد به کمک دستگاه برش لیزر از نمونههای جوش داده شده جدا شدهاند و Moreهدف این تحقیق، بررسی استحکام کششی و چقرمگی شکست قطعاتی از جنس پلیاتیلن چگالی بالا است که در دما، فشار و زمان های مختلف و با روش جوشکاری صفحه داغ به یکدیگر جوشکاری شدهاند. نمونههای استاندارد طبق استاندارد به کمک دستگاه برش لیزر از نمونههای جوش داده شده جدا شدهاند و نمودار تنش- کرنش توسط دستگاه کشش تهیه شده است. حداکثر استحکام کششی و چقرمگی شکست از نمودارهای حاصل استخراج شدهاند. نتایج نشان میدهد که استحکام کششی قطعات جوشکاری شده کمتر و چقرمگی شکست آنها بیشتر از قطعات جوشکاری نشده است. همچنین با افزایش زمان و دمای نگهداری، استحکام کششی و چقرمگی شکست بیشتر شده است ولی افزایش فشار باعث خروج ماده ذوب شده پرکننده بین درزجوش دو قطعه و ریزش ماده نرم شده در لبههای قطعه شده است که موجب کاهش استحکام کششی و چقرمگی شکست درز جوش میشود. Manuscript profile -
Open Access Article
147 - Drought tolerance of chickpea (Cicer arietinum L.) varieties in seedling and adult stages
Ezzat Karami Omid KaramiDrought stress is one of the most important limiting factors in the expansion and regeneration of plants in the agricultural systems and natural environment, which the best way to deal with it is to introduce cultivars resistant to stress. For this purpose, by experimen MoreDrought stress is one of the most important limiting factors in the expansion and regeneration of plants in the agricultural systems and natural environment, which the best way to deal with it is to introduce cultivars resistant to stress. For this purpose, by experimenting in the 2015 -2016 cropping year, the response of 5 cultivars of chickpea including 3 Kabuli cultivars (Arman, Azad and ILC482) and 2 Desi cultivars (Pirooz and Kaka) to drought stress resistance under 5 levels of water potential (0, -3, -6, -9 and -12 times), using 6000 polyethylene glycol in the laboratory in a factorial design in a completely randomized design with 3 replications. Cultivars were evaluated in field conditions in the form of a randomized complete block design with 4 replications at the research site of the Kurdistan Agricultural Research Center. The results showed that there are significant relationships between the characteristics measured in laboratory and field conditions. Among the studied cultivars, only Desi cultivars showed good germination potentials in (-9) and (-12) times. Therefore, in terms of drought stress tolerance at the germination stage, they had a significant advantage over Kabuli cultivars. In reducing the potential from zero to (-6) times, the greatest difference was seen in all traits. The highest number of days to flowering, day to maturity and the number of seeds per plant belonged to Kaka cultivar and the highest grain yield belonged to Arman cultivar. Cluster analysis revealed the similarity of Kabuli cultivars and their genetic distance from Desi cultivars. Manuscript profile -
Open Access Article
148 - The Effects of Polyethylene Terephthalate Surface Treatment by SO2 Plasma on the Polymer Hemocompatibility
F. Ahmadi A. Asef nejad M.T Khorasani M. Daliri JoopariPolyethylene terephthalate polymer is a member of the polyester polymer family that has high mechanical and chemical resistance. The use of artificial vessel prostheses made of polyethylene terephthalate with acceptable physical and biological characteristics is a suita MorePolyethylene terephthalate polymer is a member of the polyester polymer family that has high mechanical and chemical resistance. The use of artificial vessel prostheses made of polyethylene terephthalate with acceptable physical and biological characteristics is a suitable replacement for damaged vessels. The aim of this study is to investigate the effects of modifying the surface of polyethylene terephthalate with SO2 plasma on the hemocompatibility of the polymer.Polymer films were exposed to SO2 gas plasma. In order to evaluate surface chemistry changes, FTIR infrared spectroscopy test was performed. 3D imaging with atomic force microscope (AFM) was performed to examine the structural changes and MTT assay and platelet adhesion tests were carried out to investigate the changes in cell activity and coagulation.The results of infrared spectroscopy in the sample treated by plasma with SO2gas confirmed the presence of peaks related tothe symmetrical bonds of SO2in SO3 or SO4 in the sample. AFM images showed the surface structure changes. The MTT assay test proved the non-toxicity of the SO2gas plasma surface modification method. Adhesion and cell and platelet activity tests also showed the anti-clotting effect of the modified polymer.The use of plasma method with SO2gas is a suitable method to modify the surface and to increase blood compatibility of polyethylene terephthalate polymer, and probably can be used for making artificial blood vessels. Manuscript profile -
Open Access Article
149 - Seed germination indices and initial growth of safflower seedlings with different thousand kernel weights under drought stress
Hamid Bagheri Yousof Ghazi Khanloosani Esmaiel Zangani Babak Andelibi Mohamad Reza Azimi Moghadam Soleiman JamshidiTolerant seeds to drought stress could play significant role in steady seedling establishment and subsequent yield increase. In order to study the germination and initial seedling growth indices of safflower (cv. Sina) seeds with different thousand kernel weights (TKW) MoreTolerant seeds to drought stress could play significant role in steady seedling establishment and subsequent yield increase. In order to study the germination and initial seedling growth indices of safflower (cv. Sina) seeds with different thousand kernel weights (TKW) of 23, 23.83, 25.13 and 27.27 g, under different drought stress intensities, an experiment was carried out as factorial based on a completely randomized design in Physiology Laboratory of Zanjan University. Drought stress levels comprising 0 (control), -4 and -8 bar were obtained using polyethylene glycol 6000. Increasing drought stress intensity significantly decreased germination percentage from 81.8% in control to 57.8% in -8 bar. Seeds with higher TKW were better in terms of germination percentage and germination coefficient rate. The seeds with 27.27 TKW produced longer radicle and plumule in drought stress condition. Besides, seeds with higher TKW showed higher vigor index and seedling dry and fresh matter. In conclusion, seeds with higher TKW showed higher germination indices and were more tolerant to drought stress. Manuscript profile