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      • Open Access Article

        1 - One –Pot Synthesis of Polyhydroquinoline Derivatives via Hantzsch Condensation Reaction Using Nanosized Magnesium Oxide as Heterogeneous Catalyst
        Hakimeh Mirzaee Ahmad Izadyar Abolghsem Davoodnia Hoseyn Eshghi
      • Open Access Article

        2 - Protective effect of nano magnesium oxide on renal ischemia/reperfusion injury on serum factors in male Wistar rats
        Marzieh Minaei اکرم عیدی Pejman Mortazavi Ahmad Asghari
        Background & Aim: In recent years, nanotechnology has produced new forms of materials that are more effective than their predecessors. Magnesium plays a key role in many biological processes. The aim of this study was to investigate the effects of nano magnesium oxide ( More
        Background & Aim: In recent years, nanotechnology has produced new forms of materials that are more effective than their predecessors. Magnesium plays a key role in many biological processes. The aim of this study was to investigate the effects of nano magnesium oxide (Nano-MgO) on renal ischemia/reperfusion (I/R) as a common complication of renal vascular surgery or renal transplantation in a male rat model. Materials & Methods: In this study, Induction of I/R injury was done through clamping left renal pedicle for 20 min. Animals were administrated with Nano-MgO (1.25, 2.5 and 5 mg/kg) for 30 days by gavage and then blood samples were collected and changes in serum albumin, total protein, urea and creatinine were examined and the data were statistically analyzed (p <0.05). Results: Our findings showed that Nano-MgO administration to renal I/R injury rats significantly attenuates serum creatinine and urea levels. Also, administration of Nano-MgO increased serum albumin and total protein levels. Conclusion: The Nano-MgO administration preserves renal function and As a potent vasodilator, Nano-MgO may have been able to reduce kidney damage following ischemia-reperfusion induction. Manuscript profile
      • Open Access Article

        3 - Biosynthesis of Magnesium Oxide Nanoparticles by E. hirae isolated from traditional yogurt in Rafsanjan, Iran.
        Ozra Hosseini-Naveha Ashraf Kariminik Shahla Soltani-Nezhad Enayatollah Sheikhhosseini
        There is a lot of evidence about the beneficial biological effects of probiotics in food and dairy products. Antimicrobial properties, ability to produce biosurfactant and biosynthesis of nanoparticles are among the significant effects of these organisms. The aim of thi More
        There is a lot of evidence about the beneficial biological effects of probiotics in food and dairy products. Antimicrobial properties, ability to produce biosurfactant and biosynthesis of nanoparticles are among the significant effects of these organisms. The aim of this research is the biosynthesis of magnesium oxide nanoparticles by Enterococcus hirai from traditional yogurt. MRS agar culture medium was used to isolate probiotics. Biosurfactant-producing isolates were examined in terms of hemolysis, crude Oil Spreading Assay, Drop Collapse Assay and emulsification index, the best isolate for the production of magnesium oxide nanoparticles, size, antioxidant activity, FTIR and antibacterial effects were evaluated and identified by PCR. 9 isolates had probiotic properties, isolate L11 was selected with higher biosurfactant production ability. The antibacterial property of the produced biosurfactant was shown against Gram-positive and Gram-negative bacteria. This strain was also able to produce magnesium oxide nanoparticles. The formed nanoparticles with a size of 135 nm showed significant antibacterial and antioxidant effects. The best strain was introduced as Enterococcus hirai. According to the findings, it seems that this probiotic strain producing biosurfactant and magnesium oxide nanoparticles can be used in food and industrial industries. Manuscript profile
      • Open Access Article

        4 - Experimental studies on the convective heat transfer of MgO–water nanofluid
        mohammad ghavidel Seyfolah Saedodin
        The present study aimed to investigate the convective heat transfer coefficient of nanofluids containing magnesium oxide nanoparticles in water-based fluid in the exchanger plates have been carried out. Tests on the volume fraction of (0.005, 0.01, 0.015and 0.02) were u More
        The present study aimed to investigate the convective heat transfer coefficient of nanofluids containing magnesium oxide nanoparticles in water-based fluid in the exchanger plates have been carried out. Tests on the volume fraction of (0.005, 0.01, 0.015and 0.02) were used in this study have Ast.nanvzrh which has a diameter of 20 nm. Also the results show that with increasing fraction nanofluid volume, heat transfer coefficient and thus increases the heat transfer. Also heat transfer nanofluids% increase in volume fraction of 0.02 to 0.005 respectively 52% and 4.3% is on. Manuscript profile
      • Open Access Article

        5 - Experimental study of dynamic viscosity of the fluid water-based nanofluids magnesium oxide
        محمد قویدل سیف الله سعدالدین
        In this study, the dynamic viscosity of the fluid is water-based nanofluids magnesium oxide discussed. The experiments in four volume fraction (0.005, 0.01, 0.015 and 0.02) and four different diameter nanoparticles 20, 40, 50 and 60 nm were used. The results obtained in More
        In this study, the dynamic viscosity of the fluid is water-based nanofluids magnesium oxide discussed. The experiments in four volume fraction (0.005, 0.01, 0.015 and 0.02) and four different diameter nanoparticles 20, 40, 50 and 60 nm were used. The results obtained in this way is that by increasing the volume fraction of a specified diameter, the viscosity of nanofluids increases and by increasing the diameter Nanvdrh in a specified volume fraction, the viscosity of nanofluids decreases the viscosity reduction benefits of using nanofluids in the industry more. Manuscript profile
      • Open Access Article

        6 - Effect of magnesium oxide nanoparticles on varicocele-induced testicular damage in male Wistar rats
        Masoumeh Tolu Ghamari Akram Eidi Pejman Mortazavi Ahmad Asghari
        Varicocele is a pathological dilation of the venous network of the spermatic cord and considering that magnesium oxide nanoparticles play a key role in various physiological functions, the aim of this study was to evaluate the performance of nanoparticles on sperm chara More
        Varicocele is a pathological dilation of the venous network of the spermatic cord and considering that magnesium oxide nanoparticles play a key role in various physiological functions, the aim of this study was to evaluate the performance of nanoparticles on sperm characteristics affected by experimental varicocele. A total of 54 male Wistar rats were randomly divided into 9 equal groups including healthy control group (untouched animals), sham-operated group (underwent sham surgery), three healthy experimental groups (animals in these groups received magnesium oxide nanoparticles at doses of 1.25, 2.5 and 5 mg/kg respectively by gavage for 6 weeks), varicocele control group (varicocele was induced by renal vein ligation) and three experimental varicocele groups (in addition to varicocele induction, magnesium oxide nanoparticles were given at doses of 1.25, 2.5 and 5 mg/kg respectively by gavage for 6 weeks). At the end of the 6th week, the abdomen was opened and semen samples were collected from the tail of the epididymis to determine the indices of concentration, survival and motility of sperm and the data were statistically analyzed (p&lt;0.05). The results showed that magnesium oxide nanoparticles were able to significantly increase the concentration, viability, progressive, moderate and non-progressive movements of sperm compared to the varicocele group (p&lt;0.001) and also caused a significant decrease (p&lt;0.001) in the number of non-moving sperms in the varicocele experimental groups. Therefore, magnesium oxide nanoparticles may possibly reduce the destructive effects of varicocele due to their antioxidant activity and be effective in its treatment by improving sperm properties during varicocele. Manuscript profile
      • Open Access Article

        7 - Changes in some physiological traits and mucilage yield of sour tea (Hibiscus Sabdariffa L.) ‎under foliar application of magnesium and iron oxide nanoparticles
        Payam Moaveni Hasti Kiapour Behzad Sani faizeh rajabzadeh Hamid Mozafari
      • Open Access Article

        8 - Kinetics of Carbothermic Reduction of Molybdenite in the Presence of Magnesium Oxide
        khadijeh Biranvand Mohammad Hasan Abbasi Ali Saidi
        In this research, the kinetics of carbothermic reduction of molybdenite in the presence of magnesium oxide was studied. Powder samples with a stoichiometric ratio (molybdenite: magnesium oxide: Graphite 1: 2: 2) prepared under simultaneous thermal analysis (STA), with t More
        In this research, the kinetics of carbothermic reduction of molybdenite in the presence of magnesium oxide was studied. Powder samples with a stoichiometric ratio (molybdenite: magnesium oxide: Graphite 1: 2: 2) prepared under simultaneous thermal analysis (STA), with three heating rates of 10, 15 and 20 degrees per minute, respectively. A series of experiments were performed under isothermal argon atmosphere, to determine the intermediate phases formed during the process. The results showed that the process temperature range was 900 &ordm;C to 1400 &ordm;C and with the formation of intermediate phases of molybdenum oxide (MoO2) and magnesium molybdate (MgMoO4) goes. Kinetic investigations were done with the free model methods such as Friedman, Ozawa and Kissinger as well as model fitting method Coats - Redfern. The results of all methods were in good agreement with each other and suggested that the mechanism of the reaction was chemical control and activation energy was about 425 KJ/mol. Manuscript profile
      • Open Access Article

        9 - The Effect of Magnesium Oxide Nanoparticles on Oxidative Stress in a Parkinson's Model of Male Rats
        Hoda Ghorbani moghaddam Akram Eidi Pejman Mortazavi Shahrbanoo Oryan
        Since limited studies have evaluated the antioxidant effects of magnesium oxide nanoparticles on Parkinson's disease, the aim of this study is to investigate the effect of magnesium oxide nanoparticles (MON) on oxidative stress in the Parkinson's model in mice. In this More
        Since limited studies have evaluated the antioxidant effects of magnesium oxide nanoparticles on Parkinson's disease, the aim of this study is to investigate the effect of magnesium oxide nanoparticles (MON) on oxidative stress in the Parkinson's model in mice. In this experimental study, 54 adult male rats were divided into nine groups of six, including: healthy control group, parkinsonian control group receiving 6-hydroxydopamine in the lateral ventricle, sham group receiving normal saline and healthy experimental group receiving magnesium oxide nanoparticles in doses of 2.5, 5 and 10 mg/kg and experimental Parkinson's groups that in addition to inducing Parkinson's, received magnesium oxide nanoparticles in doses of 2.5, 5 and 10 mg/kg. Administration of nanoparticles was intraperitoneal for 30 days. After that, oxidative stress parameters MDA, CAT and SOD were measured in the brain tissue. The results of the present study showed that treatment with magnesium oxide nanoparticles significantly reduced the amount of oxidative stress parameters in the brain tissue (p &lt; 0.05). Magnesium oxide nanoparticle treatment in doses of 5 and 10 mg/kg decreased MDA in parkinsonian groups compared to parkinsonian control animals. Also, the treatment of magnesium oxide nanoparticles in doses of 5 and 10 mg/kg in the parkinsonian group caused a significant increase in the activity of SOD and CAT enzymes compared to parkinsonian control animals. As a result, it can be said that magnesium oxide nanoparticle can play a promising role with its effectiveness in reducing oxidative stress processes in Parkinson's model. Manuscript profile