در کار اول و دوم نانوذرات سولفید مس نشانده شده بر سطح کربن فعال سنتز شدند و با تکنیکهای مختلفی مانند sem، xrd و bet مورد شناسایی قرار گرفتند. کاربرد این ماده برای حذف رنگهای سانست یلو، اورامیناو و سافرانیناو از محیطهای آبی با کمک امواج فراصوت مورد تحقیق قرار گرفت. وابستگی درصد حذف رنگها به متغیرهای موثر مانند، ph، غلظت اولیه رنگها، مقدار جاذب و مدت زمان امواج فراصوت با روشهای سطوح پاسخ بررسی شد...

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Introduction & Objective: In recent years stem cells have been evaluated for regenerating lost tissues. Therefore, many studies aimed to assess isolation of these cells from different origins, and culture them. The purpose of this study is to evaluate the osteogenic differentiation of stem cells derived from periodontal ligament of periodontitis affected teeth in melatonin contained media. M...

Introduction: The highest electromagnetic radiation pollution is related to the radiofrequency waves of mobile phones (1). Up to 70% of these waves can be absorbed by various tissues (2). Absorption of these waves can damage the body tissues by causing oxidative stress (3). Given that melatonin plays an antioxidant role, it seems that this hormone can have a protective effect on the hepato- tox...

 Background: Busulfan is drug of choice for treatment of certain cancers with well-known side effects. Infertility and testes tissue damage are known side effects. There is still no effective therapy to reduce these effects. Melatonin is a potent antioxidant with protective effects on certain tissues. The aim of this study was to evaluate the protective effects of exogenous melatonin o...

  سابقه و هدف: ریتم شبانه روزی یک چرخه ‌ ای فیزیولوژیکی و رفتاری است که توسط یک سیستم ضربان ساز داخلی و به کمک تغییرات اطلاعات حاصله از محیط (مانند نور، دما و...) حاصل شده و چرخه خواب و بیداری جزء مهمی از آن به شمار می ‌ آید. مدت نسبی این چرخه حدود 2/24 ساعت بوده و بر طبق آن هوشیاری در طول روز و خواب در طول شب حادث می ‌ گردد.   یافته ‌ ها: این بیماری عموما در طی 1 تا 2 روز پس از پروازهای بین قا...

Background and Objective: Diabetes mellitus is a complicated metabolic disorder that can impair both spatial learning and memory. The aim of this study was to evaluate the effect of zinc and melatonin supplements on spatial learning and memory in diabetic rats. Materials and Methods: This experimental study was carried out on 5 groups of male Wistar rats (n=10 for each): the control animals (C)...

Introduction: According to the literature, a large number of people working in industries and service providing personnel, such as firefighters, physicians, and nurses, are shift workers. The spread of shift working in industrial societies and the incidence of the problems resulting from shift working have caused the researchers to conduct studies on this issue. The present study also aimed to ...

Background and purpose: Oxidative stress inhibits sperm motility and changes in shape and be individuals leads to sterility. Cadmium, increased free radical production in cells and cell tissue damage. The best way to deal with it, increasing antioxidants secret among the antioxidants melatonin as an antioxidant was studied. Materials and methods: 64 male Wistar rats over 6-8 weeks were divide...

  Background : The Obesity and metabolic diseases appears to have emerged largely and epidemically because of changes in our diet and life style. The aim of this study was to investigate the effects of melatoninon plasma glucose, uric acid, insulin, HOMA, body weight gain and Liver and kidney histology in fructose fed rats.   Methods: In this experimental study, 24 male Wistar rats were used. A...