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91.
Kamal A. Rashid Ralph O. Mumma 《Journal of environmental science and health. Part. B》2013,48(6):565-577
Abstract Genotoxicity of the insecticide methyl parathion was investigated in Salmonella typhimurium and Escherichia coli bacterial test systems for the detection of back mutations and DNA‐damage. Methyl parathion was mutagenic to S. typhimurium strain TA100 after activation with rat liver microsomal and cytosolic enzymes. In DNA repair tests, methyl parathion was effective in inducing damage to the S. typhimurium strain TA1538 which lack excision repair compared to the strain TA1978 which is proficient in excision repair mechanisms. Normal laboratory light conditions had no effect on the mutagenicity tests, however, exposure of methyl parathion in the petri dish containing the tester strain TA100 and rat liver microsomal and cytosolic enzymes reduced the mutagenic activity and increased the toxic effects of methyl parathion. 相似文献
92.
Kamal A. Rashid Ralph O. Mumma 《Journal of environmental science and health. Part. B》2013,48(3):243-250
1,3‐β‐d‐Glucan derived from baker's yeast was chemically modified in two steps yielding crosslinked carboxymethyl glucan as the sodium salt (2). After cation exchange with hexadecyltrimethylammonium chloride, a hydrophobic adsorbent (3) was obtained which showed an excellent binding of the estrogenic mycotoxin zearalenone with a maximum adsorption of up to 183 mg/g. Compound 3 additionally showed a relatively high adsorption capacity for the trichothecene T‐2 toxin of at least 10 mg/g. Starting from 2, various derivatives were prepared by cation exchange using quaternary ammonium salts bearing substituents besides methyl from four to 18 carbon atoms. The adsorption of T‐2 toxin on these derivatives were compared with compound 3 leading to the conclusion that 3 is the best adsorbent of all investigated tetraalkylammonium‐modified derivatives of 2. 相似文献
93.
Governance of water supply systems in the Palestinian Territories: A data envelopment analysis approach to the management of water resources 总被引:2,自引:0,他引:2
This study demonstrates that data envelopment analysis (DEA) can be a useful tool to assess the relative efficiencies of water supply systems and to establish benchmarks with which to measure progress in the management of water resources. Frontier efficiency models measure the efficiency of water use in the Palestinian Territories (West Bank and the Gaza Strip). At the municipality level, sufficient data for the years 1999-2002 were available to estimate efficiency and stability scores. The Gaza Strip efficiency scores were considerably lower than those of the West Bank. Water losses were the major source of the inefficiency as indicated by the large slacks of this input. The relative sizes of the municipalities affect efficiency scores little. Palestinian policy makers should focus on rebuilding the infrastructure of the water networks, beginning with the most DEA inefficient municipalities in order to minimize water losses. 相似文献
94.
Rashed Mohammed Kamal El-Senousy Waled Morsy Sayed ElSayed Tarek Abd ElSalam AlKhazindar Maha 《Food and environmental virology》2022,14(3):246-257
Food and Environmental Virology - The objective of this study was to compare human adenoviruses (HAdVs) genome and infectivity, polyomaviruses (JC and BK) genome (JCPyVs) and (BKPyVs), Pepper Mild... 相似文献
95.
Akemal M. Z. Nabilah Kamal M. Y. Md Fauzan Famiza A. L. Asiah M. N. Fadli M. Z. Sharil Fetri Z. Mohamad Natasha M. Z. Nurul 《Journal of Material Cycles and Waste Management》2023,25(4):2025-2036
Journal of Material Cycles and Waste Management - Coal Bottom Ash (CBA) is one of the byproducts of the coal combustion process in power plants that accumulates in landfills due to its porous,... 相似文献
96.
Allam Venkata Sita Rama Raju Paudel Keshav Raj Gupta Gaurav Singh Sachin Kumar Vishwas Sukriti Gulati Monica Gupta Saurabh Chaitanya M. V. N. L. Jha Niraj Kumar Gupta Piyush Kumar Patel Vyoma K. Liu Gang Kamal Mohammad Amjad Hansbro Philip M. Oliver Brian Gregory George Chellappan Dinesh Kumar Dua Kamal 《Environmental science and pollution research international》2022,29(42):62733-62754
Environmental Science and Pollution Research - Asthma is a chronic inflammatory disease primarily characterized by inflammation and reversible bronchoconstriction. It is currently one of the... 相似文献