نتایج جستجو برای: lc50 96h
تعداد نتایج: 3366 فیلتر نتایج به سال:
background: since heavy metals can accumulate in the tissues of aquatic organisms, they can cause a range of hazardous effects which can become harmful to humans. the aim of this study was to investigate the acute effects of some heavy metals as potential dangerous substances by assessing the mortality effects of mercuric chloride (hgcl2), lead chloride (pbcl2) and zinc sulfate (znso4) pollutan...
Background: Since heavy metals can accumulate in the tissues of aquatic organisms, they can cause a range of hazardous effects which can become harmful to humans. The aim of this study was to investigate the acute effects of some heavy metals as potential dangerous substances by assessing the mortality effects of Mercuric Chloride (HgCl2), Lead Chloride (PbCl2) and Zinc Sulfate (ZnSO4) pollutan...
کادمیوم پس از جیوه دومین فلز سمی در محیطهای دریایی محسوب می گردد. دوکفه ای ها و خصوصا اویسترها به دلیل دارا بودن نرخ فیلتراسیون بالا، عدم تحرک و نداشتن سیستم های تنظیمی مواد آلاینده بیواندیکاتور مناسبی برای ارزیابی فلزات سنگین در محیط می باشند. اویستر Crassostrea sp. یک گونه تازه شناسایی شده در منطقه بندر امام خمینی می باشد که به دلیل پراکنش وسیع، گونه مناسبی برای بررسی تست های سمیت می باشد که ...
Abstract Bisphenol A (BPA) is a monomer used in the production of polycarbonate, polymer commonly found plastics, epoxy resins and thermal papers. The presence BPA food, water, air dust has been great concern recent years not only due to environmental ecological issues but also because its supposed risk public health related mutagenic carcinogenic potential. In this study we evaluated toxicity ...
Fish vaccination has been increasingly exploited as a tool to control pathogen infection. The production of immunoglobulin following vaccination might be affected by several factors such as management procedures, water temperature, and the presence of xenobiotics. In the present study, we aimed to investigate the kinetics of immunoglobulin production in silver catfish (Rhamdia quelen) inoculate...
Juvenile hybrid tilapia (Oreochromis sp.) was tested with different concentration of heavy metals under varying exposure time to examine acute toxicity effect on their survival rate and bioaccumulation in fish tissues. Copper (Cu), cadmium (Cd) and zinc (Zn) was used at rates 0.0, 0.50, 1.0, 3.0 and 5.0 mg L-1. The medial lethal concentration of Cu, Cd and Zn (96h LC50) was determined to be 0.4...
Toxic impact of sublethal concentration (1 mg/L; 5% of 96h LC50 value) of sodium arsenite (NaAsO2) on certain biomolecules (proteins, nucleic acids, lipids, and glycogen) of five tissue components (muscles, liver, brain, skin, and gills) of the freshwater catfish Clarias batrachus was analysed. The important toxic manifestations include marked decrease in the concentration of proteins (21.72-45...
در این تحقیق ابتدا سمیت حاد (lc50 96h) ماده شیمیاییedta در پاییز سال 1390 برای ماهی قزل آلای رنگین کمان در شرایط آزمایشگاهی مورد بررسی قرار گرفت. آزمایشات و به روش استانداردo.e.c.d در طی 96 ساعت انجام پذیرفت. ابتدا مقدار lc50 96 ساعته، edta برای ماهی قزل آلای رنگین کمان برابر 2231 تعیین گردید. سپس ماهیان با میانگین طولی و وزنی 1/2±4/18 سانتی متر و 12±51 گرم بطور تصادفی به 5 گروه آزمایشی و یک گر...
The effect of combinations of sage, oregano and honey on lipid oxidation in cooked chicken meat during refrigeration at 4°C for 96h was determined. Chicken samples (thigh and breast) were then separated into five groups: control; butylated hydroxytoluene; oregano+sage; oregano+sage+5%honey and oregano+sage+10%honey. Quantitative measurements of thiobarbituric acid reactive substances, conjugate...
This work aimed to evaluate Roundup effects on biochemical biomarkers of the neotropical fish Prochilodus lineatus. Fish were acutely exposed (6, 24 and 96 h) to 10 mg L(-1) of Roundup (RD) or only water (control) and samples of liver, for antioxidants analysis, and brain and muscle, for acetylcholinesterase (AChE) determination, were collected. Fish exposed to RD for 24h showed reduction on su...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید