نتایج جستجو برای: positive control of ort bacteria

تعداد نتایج: 21306567  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده ادبیات و علوم انسانی دکتر علی شریعتی 1392

the present research was conducted to explore the effect of employing two language teaching approaches, i.e. schema-based instruction (sbi) and translation-based instruction (tbi), on vocabulary knowledge, structure and reading comprehension ability of forty one female students learning english in grade one senior high school in rivash, kuhsorkh, iran. while sbi focuses on schemata, i.e. words ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سمنان - دانشکده علوم تربیتی و روانشناسی 1391

anxiety is one common disorder during childhood. in curing anxiety disorders, there are different types of psychological remedies, pharmotherapy, family therapy, and music therapy that can improve the individual’s anxiety, but we need some other remedies to improve social and emotional relationship and interactions. considering the importance of curing the anxiety disorders, the effect of sand ...

Journal: :دامپزشکی 0
عبدالکریم زمانی مقدم دانشیار گروه علوم درمانگاهی دانشکده دامپزشکی دانشگاه شهرکرد حسین طهماسبی دانشجوی دانشکده دامپزشکی و عضو پژوهشکده زیست فناوری دانشگاه شهرکرد سید حسین هاشمی باباحیدری دانشجوی دانشکده دامپزشکی دانشگاه شهرکرد مهرداد خسروی فارسانی دانشجوی دانشکده دامپزشکی دانشگاه شهرکرد عبدالله کیانی سلمی کارشناس گروه علوم درمانگاهی دانشکده دامپزشکی دانشگاه شهرکرد

respiratory disease conditions are continuing to cause heavy economic losses in the poultry industry worldwide. ornithobacterium rhinotracheale (ort) has been incriminated as a possible additional causative agent in respiratory disease complex. although, ort has been proved to be highly sensitive to different chemical disinfectants, currently, ort infection appears to have become endemic and ca...

Journal: :شیلات 0
حمیدرضا احمدنیای مطلق گروه شیلات دانشکده منابع طبیعی، دانشگاه تهران، کرج، ایران مهرداد فرهنگی گروه شیلات دانشکده منابع طبیعی، دانشگاه تهران، کرج، ایران غلامرضا رفیعی گروه شیلات دانشکده منابع طبیعی، دانشگاه تهران، کرج، ایران فرزانه نوری گروه شیلات دانشکده منابع طبیعی، دانشگاه تهران، کرج، ایران

the probiotic effects of two gram positive bacteria, bacillus subtilis and bacillus licheniformis, were examined on growth performance, body composition and survival rate of artemia urmiana. three diets containing 102 (t1), 104 (t2), 106 (t3) cfu of probiotics g feed-1 and a control diet (c) without probiotic were used through a completely randomized design (each with three replicates). the use...

Journal: :molecular and biochemical diagnosis (journal) 0
mandana salehizadeh department of microbiology, islamic azad university (tehran olom tahghighat), tehran, ir iran mitra salehi department of microbiology, islamic azad university, north tehran branch, tehran, ir iran mohamad reza falahiyan department of microbiology, islamic azad university, north tehran branch, tehran, ir iran

abstract background: streptococcus mutans in the oral cavities sable to produce mutacin (bacteriocin-like substances) with antibiotic properties. the aim of this study was to investigate the frequency and expression of genes encoding mutacins typei, ii, iii and iv and also two of 8 genes in a cluster encoding the putative bacteriocins, the designated bsm 283, bsm 299, bsm 423, bsm 1889c, bsm 18...

پایان نامه :0 1371

the treatment of in completely formed pulpless teeth has presented considrable problems. these teeth have wide open apexes and the walls of the root canal diverge toward the apical tissues. mechanical preparation cannot be done in the normal manner beacause of the large initial size and the taper of apical part of the canal , a mechanical stop cannot be produced at the apex of the canal and , t...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی عمران 1391

one of the most commonly used techniques to reduce the corrosion rate of rebar in concrete is addition substances named corrosion inhibitors into the concrete. corrosion inhibitor is chemical compounds that were added to concrete to prevent corrosion of steel in concrete. sodium nitrate is a type of anodic inhibitors that this study investigatesthe effect of this inhibitor on the properties of ...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد شاهرود - دانشکده علوم انسانی 1393

recent studies in scientific education as well as foreign and second language instruction suggest that thinking has rarely been an integral part of education and training in classroom. some scholars decried the lack of emphasis on thinking in the institutes and schools. they noted that memorization and drills were rewarded,while inquiry, reflection, and consideration of alternatives were frowne...

Journal: :medical laboratory journal 0
shirin sheikholeslami pharmaceutical sciences branch, islamic azad university, tehran, iran seyed mahdi rezayat pharmaceutical sciences branch, islamic azad university, tehran, iran reza hosseini doust pharmaceutical sciences branch, islamic azad university, tehran, iran hamid reza ahmadi ashtiani islamic azad university, pharmaceutical sciences branch, tehran, iran

abstract       background and objective: the spread of drug resistance in bacteria have prompted researchers to seek suitable alternative for antimicrobial drugs among various medicinal plants and nanoparticles. the aim of this study was to evaluate the effect of silver nanoparticles alone and in combination with methanol extract of zataria multiflora on five gram-positive and gram-negative bac...

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