荒唐
发表于 2025-3-23 11:08:13
Daniel Felsenstein,Hanan Barkaicarry out more sophisticated carcinogenic studies with animals and submammalian species mimicking the human condition. We have seemingly unsurmountable difficulties with our perspective in the study of human carcinogenesis because the paucity of our environmental data and the simplicity of our carci
profligate
发表于 2025-3-23 17:50:45
Daniel Felsenstein,Hanan Barkaile exhaust, fossil fuel burning, and the chemical industry contribute many organic compounds to the air. It is not unreasonable to expect that products from reactions of these chemicals with NO. and SO., by photochemical (1–5) or other processes, will be also observed in the atmosphere (6). However,
consolidate
发表于 2025-3-23 21:03:27
Global Trends in the Tel-Aviv Tourism Sectornd entirely different approach to sampling (1). Thus in 1950, Braus, Middleton, and Walton (2), using a column of activated carbon to filter 5000 gallons or more of water, were able to recover from 2 to 4 g of organic pollutants by extracting the carbon with ethyl ether and an additional 2 to 10 g b
发芽
发表于 2025-3-24 00:37:50
http://reply.papertrans.cn/16/1592/159175/159175_14.png
grenade
发表于 2025-3-24 04:38:13
https://doi.org/10.1007/978-1-4899-7537-9ed in a coupled chemical and biological approach. The principal focus-of the research has involved the preliminary chemical characterization and preparation for bioassay, followed by testing in the . histidine reversion assay described by Ames (1). The mutagenicity tests are intended to (a) act as p
Little
发表于 2025-3-24 10:01:33
Emerging Oxide Resistance Change Memoriesgh conventional animal tests, some of these environmental chemicals have been found to be either highly toxic, mutagenic, carcinogenic, or teratogenic. Epidemiological studies have shown that among these harmful chemicals, a few also exhibit such detrimental effects in the human population. Because
针叶类的树
发表于 2025-3-24 12:28:07
Lane W. Martin,Ying-Hao Chu,R. Rameshf the research necessary to evaluate the potential ecological effects, to determine the ultimate fate in the environment, and to identify critical pathways to man that might occur as the result of release of a particular material (Table 1). Evaluation of the potential toxicity of the material can be
narcissism
发表于 2025-3-24 16:29:07
https://doi.org/10.1007/978-981-15-6912-8strial environments, was described more than two centuries ago in Pott’s studies in chimney sweeps and a century ago in the work of Harting and Hesse on uranium miners. In the last two decades, with the availability of sophisticated air sampling devices, analytical chemistry techniques, and bioassay
生命层
发表于 2025-3-24 20:37:55
James Lourembam,Jiancheng Huangic when administered subcutaneously to mice (1,2). Subsequently, this effect was also observed in experimental animals injected with extracts of ambient POM collected from Los Angeles photochemical smog (3) and in seven other U.S. cities (4). Similar results now have been found with ambient samples
矛盾
发表于 2025-3-24 23:46:42
Peng Huang,Bin Gao,Jinfeng Kangortation-related sources of such materials are diesel engines. Diesel power has been used for railway locomotives, long haul trucks, and earthmoving equipment for many years. However, recently a strong trend has developed toward use of diesel engines in urban service vehicles and also taxicabs. In t