نتایج جستجو برای: rd

تعداد نتایج: 14065  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان فارس - دانشکده علوم 1390

پایان نامه حاضر به بررسی مدول های rd– پروژکتیو و rd– انژکتیو می پردازد. سپس پوش و پوشش rd– پروژکتیو و rd– انژکتیو را تعریف کرده و آنها را مورد مطالعه قرار می دهد. بعدهای rd– انژکتیو و rd- پروژکتیو را برای مدول ها و حلقه ها تعریف می کند و روابط آنها را با ابعاد انژکتیو و پروژکتیو می سنجد و در پایان با تعریف تابعگونextrd(-,-) به بررسی رابطه آن با تابعگونext(-,-)می پردازد.تمرکز ما در این پایان نام...

Journal: :Communications in Algebra 2006

2004
Francois Couchot

It is proved that every commutative ring whose RD-injective modules are Σ-RD-injective is the product of a pure semi-simple ring and a finite ring. A complete characterization of commutative rings for which each artinian (respectively simple) module is RD-injective, is given. These results can be obtained by using the properties of RD-flat modules and RD-coflat modules which are respectively th...

Journal: :Journal of High Energy Physics 2018

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سمنان - دانشکده مهندسی مکانیک 1391

چکیده ندارد.

Journal: :jundishapur journal of microbiology 0
peng fei key laboratory of dairy science, ministry of education, college of food science and engineering, northeast agricultural university, harbin, china lin li key laboratory of dairy science, ministry of education, college of food science and engineering, northeast agricultural university, harbin, china xiaolin cai key laboratory of dairy science, ministry of education, college of food science and engineering, northeast agricultural university, harbin, china xinjie zhang key laboratory of dairy science, ministry of education, college of food science and engineering, northeast agricultural university, harbin, china hong jian bai key laboratory of dairy science, ministry of education, college of food science and engineering, northeast agricultural university, harbin, china yu jun jiang key laboratory of dairy science, ministry of education, college of food science and engineering, northeast agricultural university, harbin, china

conclusions with regard to improving the understanding of the differences in the biodiversity of the fecal microbiota between rd infants and h infants, the findings of this study can provide a possible basis to reveal the relationship between rd and intestinal microbiota. objectives this study aimed to reveal the changes in the biodiversity of the fecal microbiota of infants with rd. patients a...

Journal: :Canadian Journal of Plant Science 2001

Journal: :international journal of environmental research 2014
n. delshad m. emtyazjoo m. khezri

one of the most chemical methods for controlling of oil spills is use of dispersants, which arewidely being used worldwide. in this research, comparison of acute toxicity of crude oil of the persian gulf-khark area (co), iranian naftroob crude oil dispersant (ind), radiagreen osd dispersant crude oil (rd), themixture of crude oil and iranian naftroob dispersant ( co-ind) and crude oil with radi...

مدرس‌زاده, سیدمهدی, نیک‌اقبالی, امین‌ا…, هاشمی, مسیح, میرصمدی, میرمنصور ,

 Prevention of rhegmatogenous retinal detachment (RD) in susceptable eyes is necessary. In order to evaluate the role of signs and symptoms of the treated eyes in preventing RD, this study performed in prophylactically laser treated (PLT) eyes in Rasul-e Akram Hospital from 1991 to 1999.  This is an exisiting data study from the records of the patients who underwent PLT around the retinal lesio...

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