نتایج جستجو برای: the li

تعداد نتایج: 16062941  

In the present study, the interactions of three different lithium species Li+, Li3+ and CH3Li with several different sites of the most stable tautomers of DNA nucleo-bases are presented. This investigation is based on the results of thermochemical properties, Quantum Theory of Atoms in Molecules (QTAIM) and Natural Bond Orbi...

ژورنال: علوم آب و خاک 2013

This study was conducted to assess the long-term effects of soil texture and crop management on transport of lithium (Li+) and bromide (Br-) under unsaturated flow conditions. Treatments were two different soil textures of clay loam and sandy loam to be cropped with either wheat or alfalfa for 4 years. Undisturbed soil columns were taken for the steady-state flow condition using tap water prior ...

S. Ketabi S. M. Hashemianzadeh

This study is about Complexes of Li doped silicon carbide nanotube with Thymine and Cytosine ingas phase and aqueous solutions. Li doped silicon carbide nanotube and its pyrimidine nucleobasecompounds were first modeled by Quantum mechanical calculations in gas phase and in water.Calculated binding energies indicated the stronger ability of thymine to functionalize silicon carbidenanotube than ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه شیمی و مهندسی شیمی ایران - پژوهشکده توسعه صنایع شیمیایی ایران 1392

چکیده: این پایان نامه شامل دو بخش می¬باشد: در بخش اول این پروژه، مشتقات جدیدی از بورونیک اسید و بورینیک استر بدست آمدند. از واکنش محلول تری متیل بورات b(ome)3 با ترکیبات اورگانو لیتیم مانند dur-li، mes-li و ind-li ترکیبات 2، 4، 5، 7 سنتز شدند این ترکیبات به عنوان حسگر-های مولکولی، بازدارنده¬های آنزیمی و مواد آنتی باکتریال به کار برده می¬شوند. در بخش دوم این پروژه از واکنش بور تری برما...

Journal: :iranian red crescent medical journal 0
yu-feng shao department of neuroscience, anatomy, histology and embryology, school of basic medical sciences, lanzhou university, lanzhou, china yi zhang department of neurology and pain treatment, gansu provincial people hospital, lanzhou, china peng zhao department of neuroscience, anatomy, histology and embryology, school of basic medical sciences, lanzhou university, lanzhou, china; gansu university of traditional chinese medicine, lanzhou, china wen-jun yan department of neurology and pain treatment, gansu provincial people hospital, lanzhou, china xiang-pan kong department of neuroscience, anatomy, histology and embryology, school of basic medical sciences, lanzhou university, lanzhou, china lin-lan fan medical experimental center, school of basic medical sciences, lanzhou university, lanzhou, china

conclusions the evidence that btx-a decreases ntg-induced cgrp-li and sp-li levels in trigeminovascular system suggests that btx-a attenuates migraine by suppression of neuropeptide release. btx-a injections for migraine at acupoint-sites and fixed-sites are effective. acupoint-sites btx-a administration shows more efficacy for migraine than fixed-sites application. results local btx-a injectio...

Journal: :acta medica iranica 0
hamid reza rahimi department of toxicology and pharmacology, faculty of pharmacy, pharmaceutical nanotechnology research center,tehran university of medical sciences, tehran, iran. ahmad reza dehpour department of pharmacology, faculty of medicine, tehran university of medical sciences, tehran, iran. shahram ejtemaei mehr department of pharmacology, faculty of medicine, tehran university of medical sciences, tehran, iran. mohammad sharifzadeh department of toxicology and pharmacology, faculty of pharmacy, pharmaceutical nanotechnology research center,tehran university of medical sciences, tehran, iran. mohammad hossein ghahremani department of toxicology and pharmacology, faculty of pharmacy, pharmaceutical nanotechnology research center,tehran university of medical sciences, tehran, iran. ali razmi department of medicinal plants research center, institute of medicinal plants, acecr, karaj, iran.

cannabis is one of the most banned drugs in the world. cannabinoid-induced dependence or withdrawal signs are indicated by the result of complex molecular mechanisms including upstream protein kinases (pks), such as an extracellular signal regulated kinase1/2 (erk1/2) and downstream glycogen synthase kinase-3β (gsk-3β), which lead to neuronal plasticity. in this study, we examined the protectiv...

1998
Martin Lemoine Roger Ferlet

We discuss the observational status of the interstellar lithium isotopic ratio and its significance with respect to the galactic evolution of lithium. Based on invited talks given at: ESO/EIPC Workshop on “Light Elements Abundances”, Isola d’Elba, Italy, May 22–28, 1994 ESO Workshop on “Science with the VLT”, Garching, Germany, June 28 – July 01, 1994 IAU General Assembly, Joint Discussion 11, ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تهران 1378

در این تحقیق واکنش هیدروژن زدایی اکسایشی اتان در حالت پایدار بر روی کاتالیزورهای li/mgo و li/ce/mgo مورد بررسی قرار گرفت . کاتالیزور li/mgo با 5 درصد وزنی لیتیم و کاتالیزور li/ce/mgo با یک درصد وزن لیتیم و 54/7 درصد وزنی اکسید سدیم تهیه گردیدند. آزمایشات حالت پایدار نشان دادند که کاتالیزورهای li/mgo و li/ce/mgo در هیدروژن زدایی اکسایشی اتان رفتار کاملا مشابه ای دارند و اضافه کردن ceo2 بهکاتالیز...

Journal: :physical chemistry research 0
mohammad solimannejad arak university seyyedeh marziyeh hosseini department of chemistry, faculty of science, lorestan university, khorramabad, iran, on the leave from department of chemistry, lorestan university, khorramabad, iran abedin zebardasti department of chemistry, faculty of science, lorestan university, khorramabad, iran

in the present study, the cooperative and diminutive interplay between halogen, hydride, and cation-σ interactions are studied in hmgh···li+(na+)···nccl, li+(na+)···hmgh···clcn and hmgh···clcn···li+(na+) complexes by means of ab initio calculations. to better understand the cooperative or diminutive effects in the ternary systems, the corresponding binary complexes are also considered. the esti...

Journal: :veterinary research forum 2015
saman lashkari akbar taghizadeh

the present experiment was carried out to determine the digestion kinetics of carbohydrate fractions of citrus by-products. grapefruit pulp (gp), lemon pulp (le), lime pulp (li) and orange pulp (op) were the test feed. digestion kinetic of whole citrus by-products and neutral detergent fiber (ndf) fraction and acid detergent fiber (adf) fractions of citrus by-products were measured using the in...

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