نتایج جستجو برای: sub lethal concentration

تعداد نتایج: 621382  

The purpose of this study was to examine the acute and sub-acute effects of diazinon onhistopathological parameters of liver tissue and blood level of hepatic enzymes of male commonfrog (Rana ridibunda). Frogs were assigned to 9 groups (n=8, meaning 8 frogs in each group):control and treatment groups with 30, 60, 90 and 120 μg/L diazinon in water for one day or oneweek. Hepatic enzymes containi...

Background: Malathion (MT), an organophosphorus pesticide, induces hepatotoxicity and is associated with hyperglycemia and the development of diabetes mellitus.  Objectives: This study was aimed to evaluate the effects of sub-acute exposure to sub-lethal dose of MT in the liver of diabetic rats.  Methods: Non-diabetic and streptozotocin-induced diabetic rats received MT at a dose of 150 mg/kg...

al et M. Farhangi

This study was accomplished to examine the efficiency of natural zeolite in preventing acute toxicity of total ammonia to Huso huso. The study was performed using Water Static Method in 96 hours. Fish averaged 46 ? 5 g in weight and 22 ? 4 cm in total length were exposed to four different concentrations (15, 30, 50, 75 mgL-1) of ammonia and a group was considered as control. Under stable condit...

2017
Daniel Saenz Cory K. Adams

The establishment of exotic invasive species, including plants, has been linked to the decline of some amphibian populations. Of particular concern with invasive plants, from an amphibian conservation perspective, is that they are disproportionately wetland or riparian species. Recent evidence suggests that Chinese tallow (Triadica sebifera), an exotic deciduous tree species, is expanding its r...

Journal: :nanomedicine journal 0
bardia varastehmoradi department of pharmaceutical biotechnology, faculty of pharmacy and biotechnology research center, tehranسازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) reza davoodi iran nanotechnology initiative council, tehran, iran eswarapriya balu department of biotechnology, st. michael college of engineering and technology, kalayarkoil, india jegatheesan kalirajan department of biotechnology, st. michael college of engineering and technology, kalayarkoil, india bijan zare department of pharmaceutical biotechnology, faculty of pharmacy and biotechnology research center, tehranسازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) ahmad reza shahverdi department of pharmaceutical biotechnology, faculty of pharmacy and biotechnology research center, tehran university of medical sciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences)

objective(s):electromagnetic radiations which have lethal effects on the living cells are currently also considered as a disinfective physical agent.   materials and methods: in this investigation, silver nanoparticles were applied to enhance the lethal action of low powers (100 and 180 w) of 2450 mhz electromagnetic radiation especially against escherichia coli atcc 8739. silver nanoparticles ...

Journal: :Toxics 2021

The aim of this study was to analyze the impact three concentrations a pesticide mixture on first development stages rainbow trout (Oncorhynchus mykiss). made up commonly used pesticides in viticulture: glyphosate (GLY), chlorpyrifos (CPF) and copper sulfate (Cu). Eyed stage embryos were exposed for 3 weeks mixture. Lethal sub-lethal effects assessed through number phenotypic molecular endpoint...

Journal: :Chemosphere 2015
Erin M Ingram Julie Augustin Marion D Ellis Blair D Siegfried

Managed honey bee, Apis mellifera L., colonies are contracted to pollinate fruit and nut orchards improving crop quality and yield. Colonies placed in orchards are potentially exposed to pyrethroid insecticides used for broad-spectrum pest control. Pyrethroids have been reported to pose minimal risk to bees due to their low application rates in the field and putative repellent properties. This ...

2014
Khalid Abdullah Al-Ghanim

Freshwater fish, Cyprinus carpio were exposed to acute dose of cypermethrin at 7.5 μg/L for 1, 3, 5, 7 and 9 days and sub-lethal concentrations (1.5 μg/L) for 1,7, 14, 21 and 28 days to determine the change in enzyme activity in three functionally different tissues viz., gill, liver and muscle. Cypermethrin induced alterations that are both time dependent and tissue-specific, with glutamate deh...

Journal: :Water 2021

Bendiocarb is a broad-spectrum insecticide recommended for malaria control by the World Health Organization (WHO). Still, bendiocarb poses toxic risk to populations of nontargeted aquatic organisms. Thus, our study was aimed evaluate sub-lethal effects exposure on zebrafish (Danio rerio) embryos assessing physiological, developmental, and biochemical parameters. Bendiocarb-induced adverse embry...

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