نتایج جستجو برای: ceriumiv oxide

تعداد نتایج: 176320  

Journal: :علوم باغبانی ایران 0
صابر اوستان دانشجوی سابق کارشناسی ارشد، علوم باغبانی، دانشکدۀ کشاورزی، دانشگاه ارومیه لطفعلی ناصری دانشیار علوم باغبانی، دانشکدۀ کشاورزی، دانشگاه ارومیه

silicon has useful effects on growth and yield of many plants. the aim of the present study is to investigate the impact of nano silicon oxide on proliferation and improvement of some growth traits of apple, cultivar gala. thus, an experiment was designed based on completely randomized design (crd) with five levels of nano silicon oxide concentrations (0, 25, 50, 100 & 200 ppm) in five replicat...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده کشاورزی 1391

aflp یک ابزار قدرتمند برای تشخیص رونوشت هایی با فراوانی کم است و می تواند بعنوان یک روش کارآمد برای جداسازی ژنهایی که بطور متمایز بیان می شوند، بکار رود. بنابراین القا متمایز ژنها در گندم ( رقم چمران و مرودشت) در پاسخ به قارچ m.graminicola بوسیله آنالیز cdna-aflp مورد مطالعه قرار گرفت . در ابتدا گیاهان بوسیله بیمارگر مایه زنی شدند. نمونه برداری در 6 نقطه زمانی(0، 12، 24، 48، 72 و 96 ساعت) بعد ا...

Introduction: Diabetic foot ulcer is a serious complication of diabetes mellitus; it consists of lesions in the deep tissues associated with neurological disorders and peripheral vascular disease in the lower limbs. Delayed wound healing in diabetes leads to long-term hospitalization and even amputation of distal organs. Diabetes mellitus is associated with decreased nitric oxide bioavailabilit...

Journal: :journal of sciences islamic republic of iran 0

n-oxidation of 1,4-dihydro-2,6-dimethyl-1- phenyliminopyridine (7) with several peracids was attempted. the main compound obtained was l-phenyl- 2,6-dimethyl-4-pyridone (8), instead of the expected n-oxide (2). the reaction of phenylhydroxylamine with dimthylrnethoxypyroxonium perchlorate, however, successfully gave the n-oxide (3), which belongs to a class of nitrones in which the diazomethine...

Cobalt Oxide/ Zinc Oxide nanocomposite was synthesized by dropwise addition ofCo(NO)3.6H2O and Zn(NO3)2.4H2O solutions to KOH solution at different temperatures followed bycalcination at 300ºC for 4 h. The morphology and structure of nanoparticles and the influence oftemperature on particle size were studied using scanning electron microscopy (SEM) and X-RayDiffraction (XRD). Minimum particle s...

Journal: :iranian biomedical journal 0
مهدی نعمت بخش mehdi nematbakhsh پریچهر حیات داودی parichehr hayat‑davoodi پروین رجبی parvin rajabi سیدحسین ثمریان seyyed‑hossein samarian

estrogen replacement therapy (ert) in postmenopausal women may decrease the risk of coronary artery diseases (cad). we hypothesized that nitric oxide (no) releasing due to ert may be the essential factor by which endothelial permeability decreases. four groups of ovariectomized rabbits were under investigation for five weeks. groups 1 & 4 received high cholesterol diet and other two groups (2 &...

Journal: :journal of nanostructures 2015
k. hedayati

in this research zinc oxide (zno) nano-crystalline powders were prepared by sol-gel method using zinc acetate. the zno nanoparticles were characterized by x-ray diffraction (xrd), scanning electron microscopy (sem), ultraviolet-visible (uv-vis), fourier transform infra-red (ft-ir) and energy dispersive x-ray (edx) spectroscopy. the structure of nanoparticles was studied using xrd pattern. the c...

Journal: :journal of nanostructures 2012
p. nooraei b. shareghi m. salavati-niasari h. r. shahbazkia a. semnani

the interaction of copper oxide nanoparticles and copper ions and proteinase k from tritirachium album limber has been investigated employing uv spectroscopy and kinetics measurements. the aim of this study was to evaluate the effect of nanoparticles of cuo for proteinase k. in this paper we compare the effect of copper oxide nanoparticles with the effect of copper ions on proteinase k stabilit...

Journal: :acta medica iranica 0
sh. sadr a. nahavandi a.r. mani a.r. dehpour

in this study the effect of nitric oxide synthesis inhibition on stress-induced gastric damage was evaluated in bile duel ligated, sham operated and unoperated rats. animals were injected intraperitoneally with ng-nitro-l-arginine methylester (l-name), 40 mglkg, l-argininc, 200 mg/kg or saline, 30 min before water-immersion stress. one hour after water immersion, the animals were killed and the...

Journal: :journal of dentistry, tehran university of medical sciences 0
m. bargrizan assistant professor, department of pediatric dentistry, shahid beheshti university of medical scienc m. mirkarimi assistant professor, department of pediatric dentistry, zahedan university of medical sciences, zahe m. rezamand dentist, tehran, iran s. eskandarion assistant professor, department of dental materials, shahid beheshti university of medical sciences,

objective: zinc oxide eugenol (zoe) under composite restorations should be covered with a suitable material in order to prevent the harmful effect of zoe on the composite. the aim of this in vitro study was to evaluate microleakage of composite restorations in pulpotomized primary molars with different bases for covering the zoe layer and to assess the distance between different layers. materia...

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