نتایج جستجو برای: lethal concentration
تعداد نتایج: 421535 فیلتر نتایج به سال:
Freshwater cat fish Clarias batrachus was exposed to Butachlor, Imidacloprid and Sodium fluoride with lethal and sub-lethal concentration for 72 hrs and 21 days durations. Protein changes in liver and muscles were analyzed after exposure period. Imidacloprid and sodium fluoride caused remarkable protein loss lethal concentration but at sub-lethal level their toxicity was moderate. But Butachlor...
abstract in the present research solution of chalcopyrite in sulfuric acid in hydrometallurgy method using electrochemistry with cyclic voltammetry technique has been investigated. the value of maximum reduction peak current of copper ions represents the measure of solubility. in this research different parameters temperature, potential, potential exert time, chalcopyrite concentration, sulfur...
The research was accomplished to determinate sub lethal concentration (LC5096h) of Nikel and Iron on Rutils frisii kutum. The study was performed by Water Static Method during 96 hours. The experiments were done by 13 fish with avrage weight 1±0.5 g. The fish were encountered with different concentrations of Ni (5, 15, 25, 30, 35, 40 mg/l) and Iron (100, 120, 140, 150, 155, 160 mg/l) respective...
Acute toxicity of commercial grade organophosphate insecticide, quinalphos (25% emulsified concentration) to common carp (Cyprinus carpio) was tested through bioassay. The acute toxicity of quinalphos to the fingerlings exposed for 96 hr was found to be 2.75 ppm. For sub lethal toxicity study, the fish were exposed to two concentration viz., 1/10th of LC50 (0.275 ppm) and 1/5th of LC50 (0.55 pp...
1. OECD Guidelines are periodically reviewed in the light of scientific progress, changing regulatory needs, and animal welfare considerations. The original acute inhalation Test Guideline 403 (TG 403) was adopted in 1981 (1). This revised TG 403 has been designed to be more flexible, to reduce animal usage, and to fulfil regulatory needs. The revised TG 403 features two study types: a Traditio...
Silver nanoparticles are widely used in various sciences and industries. Widespread use of silver nanoparticles has caused entrance of it to the aquatic environment through Wastewater, so it is necessary to investigate the effects of silver nanoparticles on various aquatic organisms. The present study investigated the lethal concentration and bioaccumulation of silver nanoparticles and its comp...
Silver nanoparticles are widely used in various sciences and industries. Widespread use of silver nanoparticles has caused entrance of it to the aquatic environment through Wastewater, so it is necessary to investigate the effects of silver nanoparticles on various aquatic organisms. The present study investigated the lethal concentration and bioaccumulation of silver nanoparticles and its comp...
The extensive use of insecticides in public health and agriculture sectors is the main reason for development of resistance in fleas associated in domestic rodents. The present work was planned to investigate the insecticidal efficacy of Lambda-cyhalothrin, Chlorpyrifos and Fenitrothion against rat flea (Xenopsylla cheopis) infesting rodent species in Giza Governorate, Egypt. The lethal concent...
In this study, freshwater fish Cyprinus carpio was exposed to sub lethal concentration of synthetic pyrethroids insecticide cypermethrin to evaluate the impact on nucleic acids in different organs. Fishes were exposed to sub lethal concentration (1/10th of LC50 value) of cypermethrin for three different durations, 7, 14 and 21 days. In seven day exposed fishes, DN...
in this study, freshwater fish cyprinus carpio was exposed to sub lethal concentration of synthetic pyrethroids insecticide cypermethrin to evaluate the impact on nucleic acids in different organs. fishes were exposed to sub lethal concentration (1/10th of lc50 value) of cypermethrin for three different durations, 7, 14 and 21 days. in seven day exposed fishes, dna and rna contents were not alt...
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