نتایج جستجو برای: lethal dose

تعداد نتایج: 346673  

2014
Marwan Saad Azzubaidi Anil Kumar Saxena Ahmed Ghazi Alattraqchi

Marwan Saad Azzubaidi *, Anil Kumar Saxena , Ahmed Ghazi Alattraqchi 3 and Abualrahman Mohammed Abdualkader 4 1 Department of Basic Medical Sciences, Faculty of Pharmacy, International Islamic University Malaysia, Kuantan, Malaysia. 2 Department of Basic Medical Sciences, Faculty of Medicine, International Islamic University Malaysia, Kuantan, Malaysia. 3 Biochemistry Unit, Faculty of Medicine,...

2013
Eun-Kee Park Sally K. Mak Bruce D. Hammock

Cadmium is a known renal toxin. The cytotoxic effect of cadmium chloride (CdCl2) was evaluated on renal inner medullary collecting duct cells (mIMCD3). The 24 hr LC50 value for CdCl2 in mIMCD3 cells was 40 µM. The present study showed that mIMCD3 cells were sensitive to CdCl2 exposure.

2013
Elisabeth Schültke Michael Trippel Elke Bräuer-Krisch Michel Renier Stefan Bartzsch Herwig Requardt Máté D. Döbrössy Guido Nikkhah

We have conducted the first in-vivo experiments in pencilbeam irradiation, a new synchrotron radiation technique based on the principle of microbeam irradiation, a concept of spatially fractionated high-dose irradiation. In an animal model of adult C57 BL/6J mice we have determined technical and physiological limitations with the present technical setup of the technique. Fifty-eight animals wer...

Journal: :Journal of environmental biology 2006
K Ramalingam D R Shyamala

Juvenile shrimps (Penaeus monodon) weighing about 15-20 gms were procured from the grow-out ponds and reared under laboratory conditions. They were challenged with Vibrio parahaemolyticus MTCC 451 and their LD50 value was evaluated. The ascorbic acid and the histamine activity of both the control and experimental groups were assessed. The results showed a marked decline in both the parameters a...

Journal: :European journal of medicinal plants 2022

The roots of Hymenocardia acida are used in traditional African medicine to treat mainly erectile dysfunction. This study aims evaluate the lethal and sub-lethal toxicities aqueous extract two rodents species, namely Mus musculus Rattus norvegicus. acute intraperitoneal oral were determined by method Miller Tainter. Subchronic toxicity with doses 500 1000 mg/kg body weight was assessed accordin...

Journal: :Environmental pollution 2013
Jes Jessen Rasmussen Peter Wiberg-Larsen Esben Astrup Kristensen Nina Cedergreen Nikolai Friberg

Pyrethroids are widely used insecticides that may seriously harm aquatic organisms. Being strongly hydrophobic, pyrethroids in solution occur only in short pulses but may be retained in sediments for longer periods. Consequently, most studies consider the chronic exposure of sediment dwelling organisms. We collected data from 16 studies to determine effect thresholds for stream macroinvertebrat...

Journal: :Journal of environmental biology 2009
K S Tilak R Swarna Kumari

The acute toxicity of Nuvan to the grass carp Ctenopharyngodon idella was determined using static and continuous flow through system for 24, 48, 72 and 96 hr. The median lethal concentration (LC50) values were 13.1, 10.9, 9.8 and 6.5 mg l(-1) respectively in static system and 10.7, 9.5, 8.0 and 7.5 mg l(-1) respectively in continuous flow through system. A reduction in oxygen consumption is obs...

Journal: :Journal of the American Mosquito Control Association 1990
J C Lord T Fukuda

Bacillus thuringiensis var. israelensis (B.t.i.), HD-968-S-1983, and a primary powder of Bacillus sphaericus 2362 were assayed against Mansonia titillans and Ma. dyari. The susceptibility of the 2 species to the individual bacterial toxins was similar. The B.t.i. LC50 values were 50.5 micrograms/liter for Ma. dyari and 54.7 micrograms/liter for Ma. titillans; the B. sphaericus LC50 values were ...

2010
F. M. Abou-Tarboush H. M. El-Ashmaoui

Inbred normal adult SWR/J mice were used to evaluate the toxic and teratogenic shortand long term effects of various dose levels (0.9, 1.8, 3.0, 9.0, 45.0, which represent 1/100, 1/50, 1/30, 1/10, 1/2 LD50, respectively) of azadirachtin of neemix-4.5 ( insecticide product )on fetuses and pups of pregnant females. The oral administration of the different dose levels of azadirachtin on days 7-12 ...

2015
Steven L. Levine Jianguo Tan Geoffrey M. Mueller Pamela M. Bachman Peter D. Jensen Joshua P. Uffman

In recent years, corn rootworm (CRW)-resistant maize events producing two or more CRW-active Bt proteins have been commercialized to enhance efficacy against the target pest(s) by providing multiple modes of action (MoA). The maize hybrid MON 87411 has been developed that produces the CRW-active Cry3Bb1 Bt protein (hereafter Cry3Bb1) and expresses a RNAi-mediated MoA that also targets CRW. As p...

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