نتایج جستجو برای: bronsted type acid
تعداد نتایج: 1984667 فیلتر نتایج به سال:
Cerium oxide (Ce100), molybdenum (Mo100), and a material containing Ce Mo (CeMo) were synthesized by the Pechini method, using glycerol as polyol. These materials applied for fructose conversion in an aqueous medium. The characterization results show formation of cerium molybdate (Ce2(MoO4)3) CeMo. Ce100 presented good thermal stability, Mo100 sublimation MoO3 polymolybdates was verified. CeMo ...
The oil contents of rye grain seeds ranged from 0.70% (type 25) to 3.92 % (type 1). Palmitic acid contents of oils changed between 10.82% (type 26) and 22.43% (type 10). In addition, while oleic acid contents of oil samples vary between 20.61% (type 17) and 37.86% (type 3), linoleic acid contents of oils changed between 18.91% (type 3) to 54.0% (type 13). Also, linolenic acid contents of oi...
قارچ ها به عنوان یکی از مهمترین عوامل بیماریزای گیاهی، منبع اصلی از متابولیت های ثانویه بیواکتیو هستند، و از اهمیت قابل توجهی در فعل و انفعالات زیست محیطی برخوردار می باشند از جمله متابولیت ها می توان آنتی بیوتیک ها، توکسین ها و آنزیم ها را نام برد. در این پژوهش شناسایی متابولیت های ثانویه تولید شده در 21 گونه قارچی با کمک gc – ms انجام گردید. نتایج حاصل از بررسی قابلیت ضد باکتریایی، ضد قارچی، ...
abstractintroduction: majority of diabetic patients eventually develop hypertension. becase of its antioxidative properties, alpha-lipoic acid plays an effective role in decreasing oxidative stress and preventing endothelium dysfunction. the purpose of the present study was to determine the effect of alpha-lipoic acid on blood pressure in type 2 diabetic patients. materials & methods: fifty-sev...
antibodies directed against the enzyme glutamic acid decarboxylase (gad) are believed to be the main cause of destruction of pancreatic islet cells in type i (insulin dependent) diabetes mellitus. the enzyme was found both in the brain and pancreatic beta cells. although similarities in identity of gad in human and rat brain have been demonstrated, little is known about the interaction between ...
The abundance of sugarcane bagasse, a by-product juice extraction in sugar factories, serves as an advantage its potential for producing chemicals such levulinic acid (LA). Levulinic contains carbonyl and carboxyl groups that can be utilized many applications, pharmacies, cosmetics, solvents. Bagasse hydrolysis into LA was preceded by alkaline-acid pretreatment to separate cellulose from hemice...
Baeyer–Villiger oxidation can synthesize a series of esters or lactones that have essential application value but are difficult to be synthesized by other methods. Cycloketones oxidized using molecular oxygen, peroxy acids, hydrogen peroxide as an oxidant. Hydrogen is one the environmental oxidants. Because weak ability peroxide, Bronsted acids and Lewis used catalysts activate carbonyl ketones...
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