نتایج جستجو برای: and acid
تعداد نتایج: 16938690 فیلتر نتایج به سال:
manganese and cobalt salts of para-amino-benzoic acid supported on silica gel as oxidizing catalysts
para-aminobenzoic acid is supported on silica gel via reaction of activated silica gel and p-aminobenzoic acid which is then converted to its manganese and cobalt salts. a mixture of the manganese and cobalt salts of the acid is used to catalyze allylic and benzylic alcohols to their corresponding carbonyl compounds in reasonable yields using oxygen or air. reactions are clean and the catalysts...
here, we report analysis of in vitro and in vivo drug release from an in situ formulation consisting of triamcinolone acetonide (tr) and poly(d,l-lactide-co-glycolide) (plga) and the additives glycofurol and hydroxyapatite nanoparticles (ha). we found that these additives enhanced drug release rate. we used the taguchi method to predict optimum formulation variables to minimise the initial burs...
in a sustainable agriculture system, application of the fertilizers which are nature friendly and suitable for plants is essential. this becomes more important when dealing with medicinal plants. therefore, a factorial experiment in a randomized complete block design with three replications was set up in the 2012-2013 on nigella sativa l. treatments were nanofertilizer (pharmks®) (at 2 levels ...
نقش فزاینده رادیکال های آزاد و اکسید کننده های وابسته در فرایند پیری و بیماری زایی آشکار شده است ، نظر به افزایش روز افزون مقدار رادیکال های آزاد در سیستم حیاتی، استفاده از آنتی اکسیدان ها جهت جلوگیری از اثرات مخرب آنها اهمیت می یابد. بررسی تحقیقات انجام شده در زمینه قدرت آنتی اکسیدانی میوه ها و سبزیجات، انار را در گروه میوه های مهم واجد اثرات آنتی اکسیدانی قوی قرار داده است، لذا در این پژوهش ا...
Background and objectives: Nigella sativa seeds have shown to possess anti-inflammatory, anti-oxidant, trenquillizer, chemopreventive and anti-neoplastic effects. Besides, they areused as nutritional flavoring agents. We have investigated the protective effects of N. sativa seeds hexane extract and active principles against methyl phenyl pyridine (MP...
objective: sufficient intakes of docosahexaenoic acid (dha) via breast milk are required for optimizing visual and neural development at early stages of life. little or no information is available on dha intakes and levels found in breast milk in iranian women and surrounding regions. in this study we measure the dha in the breast milk of lactating iranian women from low and high – fish-eating ...
background: this study aimed to investigate different methods used to provide necessary supplementations for pregnant women and obtain reliable data about the general status of health promotion during pregnancy. methods: this descriptive, cross-sectional study was conducted on 401 pregnant women referring to different women’s hospitals of tabriz, including alzahra, taleghani, 29-bahman, zakariy...
this research concentrates on the lithostratigraphy, biostratigraphy, microfacies and sedimentary environment of the asmari and gachsaran formations at southwest firuzabad. the thickness of the studied section in all 608.95 meters that 220.8 meters belong to the asmari formation and 387.95 meters belong to the gachsaran formation (champe and mol members). in the study area, the asmari formation...
abstract birbery and corruption and other criminal and as such is one of social phenomena , and i can firmly say that society is protected and safe from harm , this is criminal . eache community is familiar with these crimes and the crime associated ( direct or indirect ) with the political economic , social , and cultural beliefs and religious issues , especially with the community . admitted...
this dissertation has six chapter and tree appendices. chapter 1 introduces the thesis proposal including description of problem, key questions, hypothesis, backgrounds and review of literature, research objectives, methodology and theoretical concepts (key terms) taken the literature and facilitate an understanding of national security, national interest and turkish- israeli relations concepts...
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