نتایج جستجو برای: lethal

تعداد نتایج: 43991  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده کشاورزی 1386

چکیده ندارد.

ژورنال: بوم شناسی آبزیان 2017
Attaran Fariman, Gilan, Kasalkhe, Naghimeh, Sadeghi, Parvin,

In the recent years, water pollution by contaminations are increasing rapidly, the problems of aquatic pollution with heavy metals which is one of the important pollutions indicate that necessary to assess in fish as an important source of human food. The aim of this study was investigated the sub-lethal effects of zinc chloride on hepatic enzymes activity in grey mullet (Mugil Cephalus). In th...

Behzad Nemadoost Haghi, Mahdi Banaee, Maryam Vaziriyan, Shima Shahafve, Somayeh Tahery,

Background: Paraquat is a non-selective contact herbicide, widely used to control weeds in agriculture farms and aquatic plants in surface waters. Paraquat can have adverse effects on the health of aquatic organisms. The aim of this study was to detect the alterations in the blood biochemical parameters of common carp exposed to sub-lethal concentrations of commercial formulations of paraquat. ...

The effect of biopesticide - Derisom on certain metabolites and enzymes of carbohydrate metabolism were evaluated in gill, liver, kidney and muscle of Cyprinus carpio during sub-lethal toxicity exposure of 21 days. A dose of 0.28 ppm was taken as the sub-lethal dose. The organs were taken from exposed and control fish at the end of 24 hrs, 7, 14 and 21 days and used for the estimation of total ...

Journal: :The Hastings Center report 2011
Lawrence Nelson Brandon Ashby

Come with us to read a new book that is coming recently. Yeah, this is a new coming book that many people really want to read will you be one of them? Of course, you should be. It will not make you feel so hard to enjoy your life. Even some people think that reading is a hard to do, you must be sure that you can do it. Hard will be felt when you have no ideas about what kind of book to read. Or...

Journal: :The New England journal of medicine 2008
Atul Gawande Deborah W Denno Robert D Truog David Waisel

Journal: :بهره برداری و پرورش آبزیان 0
نیما شیری دانش آموخته کارشناسی ارشد بوم شناسی آبزیان، گروه شیلات و محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران. خدیجه خوشنودی فر دانش آموخته کارشناسی ارشد تکثیر و پرورش آبزیان،گروه شیلات و محیط زیست، دانشکده منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان. غلامرضا رفیعی استاد گروه شیلات و محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران علیرضا میرواقفی دانشیار گروه شیلات و محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران.

in present study, it was determinated lc50 96-h and toxicity degree of diazinon in huso huso, then were evaluated effects of sub-lethal concentrations on tow general enzymatic indices including alanine and aspartate aminotransferase of plasma and one specific enzymatic index including tissue ache enzyme. the median lethal concentration, lowest observed effect concentration and maximum allowable...

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