نتایج جستجو برای: bronsted acid
تعداد نتایج: 747476 فیلتر نتایج به سال:
helicobacter pylori infection, the most common chronic bacterial infection in the world, and an important cause of gastrointestinal disorders, may be involved in the pathogenesis of some extra-gastrointestinal disturbances, as well as an increase in blood levels of certain inflammatory markers. anti-bacterial activity against helicobacter pylori and anti-inflammatory properties of omega-3 fatty...
background & aim: turmeric, scientifically named (curcuma longa l.), a member of ginger (zingiberaceae) family, is a perennial plant, with pharmaceutical properties and with a rhizome. this plant has many medicinal characteristics including anti-cancer, anti-bacteria and anti-hepatitis properties. experimental: to study the effects of gibberellic acid and salicylic acid on leaf, the rhizome...
the effects of a microbial inoculant (containing propionic and lactic acid bacteria) and formic acid onchemical composition, ruminal degradability of dry matter (dm) and nutrient digestibility of corn silage wereexamined. whole-plant corn was ensiled for 60 days in plastic polyethylene bags, and three treatments werecompared, 1: control (no additive), 2: propionibacterium acidipropionici plus l...
background and objectives: amygdalus with a number of endemic species grow vastly in iran. edible sweet almond (a. communis), is cultivated in many countries due to its pharmaceutical, nutritional and cosmetic importance; while almond oil which is rich in oleic acid is known for its economic interest. in the present study, the amount and constituents of oil of six amygdalus species including a....
The reaction of phenyl acetate with pyrazole is catalyzed by general bases and by bifunctional general acids. The Br~lnsted plot for general base catalysis shows downward curvature. It is consistent with either a Hammond effect on proton transfer, as described by a positive coefficient p x = a/3/-apKAH, or separate lines with p = 0.65 for cacodylate and substituted acetate monoanions and /3 = 0...
در این پژوهش، گیاه گز سروتینا (tamarix serotina) از اطراف شهرستان بیرجند جمع آوری شد. اندام های مختلف آن (گل، برگ، ساقه و ریشه) جدا، خشک و پودر گردید. جهت بررسی فیتوشیمیایی، عصاره اندام های مختلف به روش خیساندن در 4 حلال آب، اتانول، استون و کلروفرم تهیه و از عصاره به دست آمده برای تشخیص متابولیت های ثانویه و تعیین مقدار فنل کل، تانن و فلاونوئید استفاده گردید. فعالیت آنتی اکسیدانی گیاه در غلظت ه...
در این پایان نامه مدل¬سازی ترمودینامیکی حلالیت گازهای اسیدی h_2 s و ?co?_2 در محلول¬های آلکانول آمینی mea، dea، mdea، amp، dipa، tea، dga و pz توسط معادله حالت الکترولیتی¬مکعبی¬چاه-مربعیecsw انجام گردیده است. بیش از 2600 داده¬ی آزمایشگاهی در این پروژه مورد برازش قرار گرفته است. و درصد خطاهای قابل قبولی برای سامانه¬های آب+آلکانول آمین+گاز اسیدی بدست آمده است. همچنین پیش¬بینی سامانه¬های چهار جزئی...
introduction: the aim of this in vitro study was to evaluate the effect of 10% citric acid and 17% ethylenediaminetetraacetic acid (edta) irrigating solutions on the surface morphology of young and old root dentin by determining the number and diameter of dentinal tubules using scanning electron microscopy (sem). methods and materials: fifty healthy human teeth collected from young (≤30 years) ...
background: analysis of human cancer serum has revealed the presence of high amounts of hyaluronan (hyaluronic acid, ha) when compared to human normal serum, it is well documented that ha and its receptors, known as hyaladherins (habps) are involved in matrix regulation, cell proliferation, migration and malignant tumour progression. these hyaladherins not only interact with hyaluronan at the m...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید