نتایج جستجو برای: dactylogyrus sp infestation was 187 and 33 1305

تعداد نتایج: 16926028  

Journal: :تحقیقات دامپزشکی 0
حسینعلی ابراهیم زاده موسوی گروه بهداشت و بیماریهای آبزیان ،دانشکده دامپزشکی دانشگاه تهران سیدمهدی حسینی فرد دانش آموخته رشته بهداشت وبیماریهای آبزیان، دانشکده علوم تخصصی دامپزشکی، دانشگاه آزاد اسلامی واحد علوم و تحقیقات علیرضا خسروی گروه میکروبیولوژی،دانشکده دامپزشکی دانشگاه تهران مهدی سلطانی گروه بهداشت وبیماریهای آبزیان ،دانشکده دامپزشکی دانشگاه تهران مهدی یوسفیان بخش آبزی پروری اکولوژی دریای خزر

the aim of the present study was to isolate and identify parasites and saprophytes from fungal affected eggs of rainboe trout.the samples (n= 900) were obtained from six fish farm and transferred to mycology laboratory in stril tubes . the samples were inoculated in cculture media , (sda, cma, gpagar and hemp seeds cultures) at room temperature (18-24°c) . twelve species of fungi isolated from ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی 1391

in this study, the effects of oleothermal modification on physical and mechanical peroperties of fir wood (abeis sp.) blocks were examined. at first, some blocks of fir wood with 5 × 20 × 120 cm dimensions were prepared. the blocks were treated in soybean oil. the effects of 3 factors such as treatments temperature (180and 200 °c), holding time (12 and 15 h) and initial moisture content of wood...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زبانهای خارجی 1393

the purpose of this study was to examine the english language needs of medical students at tehran university of medical sciences . analysis of the needs took place for three groups: 320 undergraduate students, 30 postgraduate students and 20 university instructors. a triangulation approach to collect data was used in which a combination of the quantitative (using the questionnaires) and qualita...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه مازندران - دانشکده علوم انسانی 1390

iv abstract this study examined the linguistic behaviors of two iranian efl teachers each of them teaching learners of two similar proficiency levels, a beginner level and an intermediate level, to investigate the relationship between the learners proficiency levels and the amounts and purposes for l1 use by the two teachers. the study was carried out to investigate whether there were differe...

Journal: :veterinary research forum 2015
milad adel fatemeh ghasempour hamid reza azizi mohamad hadi shateri ahmad reza safian

parasitic diseases are harmful and limiting factors in breeding and rearing ornamental fish industry. in this study, 400 apparently healthy ornamental fishes from five species (each species 80 specimens) including: goldfish (carassius auratus), guppy (poecilia reticulate), angelfish (pterophyllum scalare), discus (symphsodon discus) and sailfin mollies (poecilia latipinna) was obtained from a l...

ژورنال: :مجله دامپزشکی ایران 2014
جواد دقیق روحی بهیار جلالی جعفری حسن نظام آبادی غلامرضا مهدیزاده

رودخانه­ی دائمی و پر آب گاماسیاب مهم­ترین رودخانه­ی دشت نهاوند در استان همدان و یکی از طویل ترین رودخانه های ایران به شمار می رود.  به منظور بررسی پتانسیل آبزی­پروری در این منطقه، طی دو فصل تابستان و پائیز سال 87 در مجموع 169 قطعه از 7 گونه ماهی که همگی متعلق به خانواده­ی کپورماهیان (cyprinidae) بودند، صید و مورد بررسی انگل­شناسی قرار گرفتند.  از آبشش و پوست این ماهیان پنج گونه مونوژن جدا گردید...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تحصیلات تکمیلی علوم پایه زنجان - دانشکده شیمی 1391

in this thesis a calibration transfer method is used to achieve bilinearity for augmented first order kinetic data. first, the proposed method is investigated using simulated data and next the concept is applied to experimental data. the experimental data consists of spectroscopic monitoring of the first order degradation reaction of carbaryl. this component is used for control of pests in frui...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده علوم انسانی 1392

the purpose of the present study was to investigate the effect of instruction through debate on male and female efl learners’ reading comprehension, to examine the differences between the performance of male and female participants on the five dimensions of cctst including analysis, evaluation, inference, deductive reasoning, and inductive reasoning, and to examine the differences between male ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده تربیت بدنی علوم ورزشی 1390

this research was conducted to examine the effect of a concurrent training on rest level of leptin of plasma and some hormonal factors in non-athlete subjects. the research population included non-athlete men who didn’t participate in any organized sport activities. 30 men were chosen voluntarily among the above-mentioned population and were divided into 2 groups: experimental (15 subjects) an...

پایان نامه :دانشگاه تربیت معلم - سبزوار - دانشکده ادبیات و علوم انسانی 1391

abstract this study evaluates the iranian pre-university english textbook in terms of needs, objectives, content, and methodology. the study was designed on the qualitative- quantitative survey basis using interviews and questionnaires, a researcher-made textbook evaluation checklist and a needs analysis questionnaire. the textbook evaluation questionnaire was used in this study to elicit the ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید