-
Open Access Article
1 - Electrocatalytic properties of platinum and it's binary alloy with vanadium in oxygen reduction reaction(ORR)
Mohammad Yari Sajjad Sedaghat Sherehjini -
Open Access Article
2 - Interaction of Dioxovanadium(V) Ion with Methionine at Different Ionic Strengths
M. Kia F. Gharib G. Ghasemi -
Open Access Article
3 - Trace Amounts Determination of Vanadium (V) Using a New Kinetic-Catalytic Reaction System
M. R. Shishehbore R. Jokar H. Dashti Khavidaki -
Open Access Article
4 - Stability Constants of Dioxy Vanadium(V)-Glycylglycine System and a Related Calculating Model
M. Aghaie H. Aghaie K. Zare -
Open Access Article
5 - Spectrophotometric Studies ot Vanadium(III) Ion Complexes th p-Sulfonatocalixf 41 acme In Aqueous Solution
Karim Zare Meysam Shirmohammadi Morteza Keshavar Farrokh Gharib -
Open Access Article
6 - Study on the Interaction of Dioxovanadium(V) with Nitrilotriacetic Acid at Different Ionic Strengths by Using Extended Debye-Hiickel Equation
K. Zare S. Rezaienejad -
Open Access Article
7 - One-pot Synthesis of Polysubstituted Dihydro-2oxypyrroles Catalyzed by Vanadium (V) oxide
Farzaneh Mohamadpour Malek Taher Maghsoodlou Reza Heydari Mojtaba Lashkari -
Open Access Article
8 - Accumulation Of Heavy Metals (Cd, Pb, Ni and V) in L. vannamei Shrimp (Litopenaeus Vannamei) Based on Size and Gender in Bushehr Shrimp Complexes
Elaheh Shakerdargah Nima Pourang Khosro Aein Jamshid Gholamhosain VosoghiInroduction and Objective: In the research undertaken in this thesis, in order to measure the concentration of heavy metals (lead, cadmium, nickel and vanadium) in the muscle tissue of shrimp, the two sites of Helleh and Shif that are centers of Vannamei shrimp in Bushe MoreInroduction and Objective: In the research undertaken in this thesis, in order to measure the concentration of heavy metals (lead, cadmium, nickel and vanadium) in the muscle tissue of shrimp, the two sites of Helleh and Shif that are centers of Vannamei shrimp in Bushehr province were sampledduring the three months of August, September and October 2012.Material and Methods: The collected samples were divided into males and females, and Polarograph was used to measure the amount of heavy metals in muscle texture.Results: The mean results of the concentration of cadmium in site of Helleh were 0.004 ppb in the muscles of both males and females; the concentration of lead in male was 0.0211ppb and in females 0.0202 ppb on a dry weight basis. Also, the mean result for cadmium in site of Shif was 0.0043 ppb in the muscle of males and 0.0037 ppb in females, and the concentration of lead in males was 0.0218 ppb and in females 0.0216 ppb on a dry weight basis. Finally, the accumulation of metals Pb>Cd at both sites of Helleh and Shif was obtained. The accumulation of lead and cadmium in both sites is positively correlated with the length of shrimp, and the extent of absorption of the two metals, lead and cadmium, had a moderate positive correlation However, the accumulation of nickel and vanadium in both sites was not detectable by PolarographConclusion: Comparing these results with international standards such as the World Health Organization shows that the concentration of lead, cadmium, nickel, and vanadium is less than the limit, and accumulation of metals and therefore probably intended for export as well as consumer health will make it difficult to raise. Manuscript profile -
Open Access Article
9 - Recovery of vanadium from secondary tailing of iron ore by salt roasting-alkaline leaching and solvent extraction processes
Rahman Ahmadi Behnam Sheykhi -
Open Access Article
10 - Bidentate Schiff Base derived from quinolone Ligands Oxovanadium (IV) Complexes
shahriare ghammamy -
Open Access Article
11 - Bidentate Isatin Schiff Base Ligands Oxovanadium (IV) Complexes
Shahryare Ghammamy -
Open Access Article
12 - Bidentate Isatin Schiff Base Ligands Oxovanadium (IV) Complexes
Shahryare Ghammamy -
Open Access Article
13 - A comparative study of Vanadium and Nickel levels in muscles of male and female Indian white prawn (Fenneropenaeusindicus) in market Shiraz in 2011
آمنه Kargar امید Tabiee مهرداد Cheraghi بهاره LorestaniThis study was conducted to determine the concentration of Vanadium (V) and Nickel (Ni) in the edible muscle tissues in male and female Fenneropenaeusindicus. For determination of the concentration of heavy metals in muscle tissues of edible Indian prawn in Shiraz city MoreThis study was conducted to determine the concentration of Vanadium (V) and Nickel (Ni) in the edible muscle tissues in male and female Fenneropenaeusindicus. For determination of the concentration of heavy metals in muscle tissues of edible Indian prawn in Shiraz city in autumn of 2011, 120 samples have been obtained randomly from Shiraz retail. Preparation and analysis of samples were performed by standard method using Atomic Absorption (Varian V10-ES) and then the concentrations of the heavy metals were compared with the recommended international standard. In this study the mean concentration of V in muscle of male and female were estimated at 1.06 ± 0.64 and 0.76 ± 0.54 mgKg-1, respectively. However, the concentration of Ni in muscle of male and female was determined as 8.1 ± 1.173 and 9.1 ± 0.79 mgKg-1, respectively. The analysis of the data showed that the concentration of Ni in the muscle of male and female samples had significant difference (P<0.05). In this study, concentration levels of metals in the muscle tissues were above the acceptable limit established by WHO and FAO. Manuscript profile -
Open Access Article
14 - Effect of municipal and industrial wastewater effluents on the Chromium and Vanadium residues in muscle tissue of Cyprinionm acrostomum and Chondrostoma regium fish in Kermanshah Gharasou River (2013)
مقداد Pirsaheb کیومرث Sharafi A. Dargahi اسماعیل Azizi طوبی Khosravi مهدی Ghayebzadeh Nowadays, the entrance of heavy metals in the aquatic environment is an important and also a global environmental concern due to the indiscriminate discharging of various industrial wastewaters, which cause accumulation of heavy metals in body of aquatic an More Nowadays, the entrance of heavy metals in the aquatic environment is an important and also a global environmental concern due to the indiscriminate discharging of various industrial wastewaters, which cause accumulation of heavy metals in body of aquatic animals including fishes. The present study aimed to evaluate the amount of Chromium and Vanadium in muscle tissue of Chondrostoma regium and Cyprinion macrostomum fish in Kermanshah Gharasou River in 2013. For sampling eight different places were chosen along the river and according to places of discharging municipal and industrial wastewaters. A total of 10 samples were collected from each place and all samples were analyzed for determination of Chromium and Vanadium metals using atomic absorption spectrophotometer. Based on results, mean concentrations of Chromium and Vanadium in muscle tissue of investigating different species among all places were significantly different (P <0.05). The minimum amount of Chromium and Vanadium content was observed at the 3 and 8 sampling stations; while the maximum quantity was determined at the 6 and 8 stations. Results revealed that mean content of Vanadium at the 3, 4, 5 and 6 station was significantly lower (P <0.05) than the standard limit approved by WHO, however, at the other stations the Vanadium content was significantly higher (P <0.05) than the WHO limit. The estimated Chromium quantity of all stations was higher than the FDA and WHO standards (P <0.05). Comparing the results of the present study with findings of other researches and also existing standards (FDA and WHO) indicate high levels of Chromium and Vanadium residues in muscle tissue of fishes. High loads of Pollutants with different types of industrial and municipal wastewater in Kermanshah Gharasou River are the major cause of heavy metals residues. Therefore, it is crucial to apply practical approaches to reduce these pollutants in Gharasou River. Manuscript profile -
Open Access Article
15 - A Kinetic Study of Vanadium Dissolution During Acetic Acid Leaching of Steel Making Converter Slag
Seyed Amirhossein Emami Mohammad Reza Kelishadi -
Open Access Article
16 - Effect of surfactant on structural and optical properties of V2O5 nanocrystals as a potential catalyst for photodegradation
F. Sanakousar C. Vidyasagar S. Chigari Swapna Victor Jiménez-Pérez C. Viswanath K. Prakash M. Sridhara -
Open Access Article
17 - The Importance of Arsenic, Vanadium, Cobalt and Strontium in Poultry, A Review
ب. نویدشاد م. محمدرضایی -
Open Access Article
18 - Vanadium cross-linked CMC-PEG-PLGA based on nanocomposite hydrogel with sodium alginate coating as a pH-sensitive insulin delivery system
Seyyed Nabiollah Hosseini Asieh Abbassi Dolavi Seyed Javad Zia-e-Haq Ayyub Saeedi: In recent years, significant advances have been made in the use of biomedical polymers as targeted carriers for the release of drugs, proteins, and growth factors. Vanadium (V) nanocomposite hydrogels were prepared in this study due to the formation of vanadium nanopa More: In recent years, significant advances have been made in the use of biomedical polymers as targeted carriers for the release of drugs, proteins, and growth factors. Vanadium (V) nanocomposite hydrogels were prepared in this study due to the formation of vanadium nanoparticles inside the swollen CMC hydrogels. The formation of vanadium (V) nanoparticles in hydrogels has been studied using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction patterns (XRD), scanning electron microscopy (SEM) experimental techniques. The XRD patterns analysis confirmed the formation of vanadium nanoparticles in a hydrogel matrix, and scanning electron microscopy micrographs also showed that the size of the nanoparticles was from 22 to 74 nm in the hydrogel matrix. The swelling behavior of nanocomposite hydrogels was studied at pH of 2.1 and 7.4. Hydrogels have shown better water absorption in less pH. Fourier transform infrared spectroscopy indicates the interaction between polysaccharides and the samples taken from the drug indicate that the drug-loaded peaks were loaded appropriately. With the release of drug from nanocomposite and pure hydrogel hydrogels, it was observed that its release rate in nanocomposite hydrogels was lower and the amount of its release decreased with increasing percentage of nanoparticles. In the cytotoxicity test after 24 h, the cell viability was in the range of 74.35% -96.05% (compared with the control sample, which was 100%). In the hydrogel nanocomposite sample containing insulin had the lowest cell viability of insulin 31.25 μg/ml after 24 h and it had the highest cell viability at 1000 (μg/ml) concentration with 25.7% cell cytotoxicity compared to the control group. Manuscript profile -
Open Access Article
19 - Anticancer activity of vanadium complexes with bipyridine and phenanthroline
طاهره نشاطی افخم مرضیه زارعی دهنوی آنیتا عابدیVanadium is a nonessential mineral of the daily diet that has shown beneficial health effects. In the present research, we synthesized and characterized three vanadium complexes,]VOCl)bpy(2]Cl )1(, ]VOCl)phen(2]Cl )2(, and ]VO)SO4()phen(2] )3(, from the reaction of VCl3 MoreVanadium is a nonessential mineral of the daily diet that has shown beneficial health effects. In the present research, we synthesized and characterized three vanadium complexes,]VOCl)bpy(2]Cl )1(, ]VOCl)phen(2]Cl )2(, and ]VO)SO4()phen(2] )3(, from the reaction of VCl3 and VOSO4 salts with 2,2'-bipyridine)bpy( and 1,10-phenanthroline )phen( ligands. The mentioned complexes were characterized by FT-IR, Mass and UV-Vis spectroscopy. In absorption spectrum of the synthesized compounds, there is a broad weak peak, above 700 nm which is referred to d-d transition of vanadium )IV( center. Moreover, stretching vibration of V=O is appeared around 973-978 cm-1, in IR spectrum. These results confirm the structure of the compounds. Cytotoxic properties of the complexes were checked out on a normal cell NIH3T3 (Rat embryo fibroblast cell) and against three cancer cell lines including HT29 (colon carcinoma), CacoII )colorectal adenocarcinoma(, and T47D )breast cancer cell( by MTT assay and compared with cis-platin. The results indicate compound )1( with low toxicity on normal cells and high cytotoxicity on the cancerous cell lines, is capable of selectively killing properties Manuscript profile -
Open Access Article
20 - Vanadium (IV and V) speciation with a catechol derivative and tetrazolium salt
Kiril Blazhev Gavazov Petya Racheva Vanya Dimitrova Lekova Atanas Nikolov Dimitrov -
Open Access Article
21 - Synthesis, spectral, thermal and biological properties of some novel coordination compounds of VO(IV) and biological 4[N-(4′-ethylbenzalidene) amino] antipyrine thiosemicarbazone and 4[N-(2′, 4′-dimethyl benzalidene amino] antipyrine thiosemicarbazone
Surendra Prasad Ram Kumar Agarwal Hans Raj Modi -
Open Access Article
22 - Investigation of the effect of substrate on formation of chromium- and vanadium carbide coatings by thermal reactive diffusion
علی اکبر قادی حسن ثقفیان Mansour SoltaniehIn this research, the effect of substrate on the formation of chromium- and vanadium carbide coating was studied by thermal reactive diffusion. The substrate of H13 steel was coated in two kinds of metal and oxide bath with molar ratio of Cr/V=3 for 14 hour at 1000˚C. C MoreIn this research, the effect of substrate on the formation of chromium- and vanadium carbide coating was studied by thermal reactive diffusion. The substrate of H13 steel was coated in two kinds of metal and oxide bath with molar ratio of Cr/V=3 for 14 hour at 1000˚C. Carbide coatings including chromium carbide (Cr3C2, Cr7C3), vanadium carbide (V8C7) and the complex carbide phase of Cr2VC2 were formed on H13 steel. The thickness of the carbide coating was 8.5±0.5 µm and 6.5±0.5 µm, respectively in metal bath and oxide bath. The amount of vanadium- to chromium- rich regions in the carbide coating was less than the ratio of vanadium to chromium content in the metal bath. The results of coating in the present study was compared to the results of coating in a similar condition on Ck45 steel. The type of substrate had an important role on the coating thickness and the phase distribution of vanadium- and chromium- rich regions. However, the element distribution in the coating was not affected by the kind of substrate. Manuscript profile -
Open Access Article
23 - Fabrication of Ni-VC Nano composite powder from oxide reactants by mechanochemical method
Seyed Amir Hossein Emami Seyed Kamal Hosseini Danial DavoodiThis research aims to produce Ni-Vanadium Carbide composite nano powder, known as a hard metal, from oxide raw materials and magnesium as a reductant, using mechano-chemical method. With regard to the adiabatic temperature (T=3964 K), this reaction is a mechanically ind MoreThis research aims to produce Ni-Vanadium Carbide composite nano powder, known as a hard metal, from oxide raw materials and magnesium as a reductant, using mechano-chemical method. With regard to the adiabatic temperature (T=3964 K), this reaction is a mechanically induced Self-sustaining (MSR) type. Raw materials were mixed according to stoichiometry reaction with a ratio of (1:1:6:2) for Nickel oxide, Vanadium oxide, Magnesium and graphite respectively. Milling was carried out in a planetary ball mill with a powder to ball ratio of 1:20 under argon gas atmosphere. After 40min of milling, combustion occurred out in the mill chamber. With regard to the results of X-ray difraction after the combustion, the intended products; that are, Nickel, Vanadium Carbide and Magnesium Oxide which is by-product of the reaction, were completely produced. HCl with a concentration of 9% was used to remove the magnesium oxide phase. The crystallite size and lattice strain were calculated using Williamson-Hall method, and the crystallite size and lattice strain of Ni and Vanadium Carbide were obtained 40nm, 0.00595, 54nm, 0.00615, respectively. Manuscript profile -
Open Access Article
24 - The Effect of 8 Weeks of Endurance Exercise, Consumption of Vanadium and Stevia on Structural Changes in the Hamstring Muscle of Type 1 Diabetic Rats
Atefeh Sarhadi Ali Hassani Maliheh ArdakanizadehLoss of muscle mass is one of the side effects of diabetes that may be delayed by regulating blood sugar levels through exercise or herbal supplements. Thirty-five male rats (180±10 g) were assigned to seven groups of control, diabetic, diabetic + exercise, diabe MoreLoss of muscle mass is one of the side effects of diabetes that may be delayed by regulating blood sugar levels through exercise or herbal supplements. Thirty-five male rats (180±10 g) were assigned to seven groups of control, diabetic, diabetic + exercise, diabetic + vanadium, diabetic + exercise + vanadium, diabetic + stevia, and diabetic + exercise + stevia. To induce type 1 diabetes, streptozotocin (55 mg/kg) was injected intraperitoneally, and vanadium extract (1mg/ml) was daily dissolved in water. The endurance training program consisted of eight weeks of treadmill running, five days a week, starting at 15 minutes at 20 meters/minute and ending at 35 minutes at 30 meters/minute in the final week. Histopathological changes in brain tissue were examined using a light microscope. In order to normalize the parametric data, Kolmogorov-Smirnov test and for their analysis, one-way ANOVA with Bonferroni post hoc test, and for non-parametric data, Kruskal-Wallis test (p ≤ 0.05) were used. Body weight values in all six experimental groups significantly decreased compared to healthy control group (p=0.001), in vanadium group compared to vanadium + exercise (p = 0.01), and in stevia + exercise group compared to stevia (p = 0.04). In the diabetic group, slight changes in cell number and size improved with exercise along with vanadium and stevia, and consumption of stevia, as well as cell degeneration with exercise along with vanadium and stevia, and consumption of vanadium and stevia (p=0.001). Eight weeks of endurance exercise, stevia, and vanadium intake appear to be effective in regulating body weight as well as improving the hamstring muscle damage caused by diabetes. . Manuscript profile