全文获取类型
收费全文 | 242篇 |
免费 | 0篇 |
国内免费 | 2篇 |
专业分类
安全科学 | 1篇 |
废物处理 | 3篇 |
环保管理 | 9篇 |
综合类 | 146篇 |
基础理论 | 33篇 |
污染及防治 | 35篇 |
评价与监测 | 12篇 |
社会与环境 | 5篇 |
出版年
2014年 | 5篇 |
2011年 | 3篇 |
2010年 | 8篇 |
2009年 | 6篇 |
2008年 | 5篇 |
2007年 | 11篇 |
2006年 | 10篇 |
2004年 | 6篇 |
2003年 | 5篇 |
2001年 | 7篇 |
2000年 | 7篇 |
1998年 | 3篇 |
1997年 | 4篇 |
1995年 | 3篇 |
1993年 | 2篇 |
1989年 | 3篇 |
1973年 | 2篇 |
1969年 | 2篇 |
1966年 | 2篇 |
1965年 | 6篇 |
1964年 | 4篇 |
1962年 | 2篇 |
1961年 | 8篇 |
1960年 | 3篇 |
1959年 | 4篇 |
1958年 | 2篇 |
1957年 | 7篇 |
1956年 | 2篇 |
1955年 | 8篇 |
1954年 | 3篇 |
1952年 | 3篇 |
1951年 | 2篇 |
1950年 | 3篇 |
1948年 | 2篇 |
1944年 | 2篇 |
1943年 | 2篇 |
1941年 | 4篇 |
1940年 | 4篇 |
1939年 | 7篇 |
1938年 | 2篇 |
1937年 | 2篇 |
1936年 | 2篇 |
1935年 | 4篇 |
1934年 | 2篇 |
1931年 | 3篇 |
1930年 | 5篇 |
1929年 | 2篇 |
1922年 | 5篇 |
1919年 | 2篇 |
1914年 | 2篇 |
排序方式: 共有244条查询结果,搜索用时 15 毫秒
1.
Kristin Quednow Wilhelm Püttmann 《Environmental science and pollution research international》2009,16(6):630-640
Background, aim, and scope
The present study focuses on the temporal concentration changes of four common organic pollutants in small freshwater streams of Hesse, Germany. The substances (tris(2-chloroethyl)phosphate (TCEP), the technical isomer mixture of 4-nonylphenol (NP), 2-(t-butylamino)-4-(ethylamino)-6-(methylthio)-s-triazine (terbutryn), and N,N-diethyl-m-toluamide (DEET)) are subject to differing regulations. Whereas the use of NP and the related nonylphenolethoxylates (NPEOs) are almost completely banned under EU directive 2003/53/EC, the herbicide terbutryn is only restricted for use as a herbicide in the majority of member states of the European Union (EU). In contrast, TCEP and DEET are not regulated by legislation, but have been replaced in some products through consumer pressure. The impact of regulation on the environmental concentrations of these pollutants is discussed. 相似文献2.
The presence of the anesthetic lidocaine (LDC), the analgesic tramadol (TRA), the antidepressant venlafaxine (VEN) and the metabolites O-desmethyltramadol (ODT) and O-desmethylvenlafaxine (ODV) was investigated in wastewater treatment plant (WWTP) effluents, in surface waters and in groundwater. The analytes were detected in all effluent samples and in only 64% of the surface water samples. The mean concentrations of the analytes in effluent samples from WWTPs with wastewater from only households and hospitals were 107 (LDC), 757 (TRA), 122 (ODT), 160 (VEN) and 637 ng L(-1) (ODV), while the mean concentrations in effluents from WWTPs treating additionally wastewater from pharmaceutical industries as indirect dischargers were for some pharmaceuticals clearly higher. WWTP effluents were identified as important sources of the analyzed pharmaceuticals and their metabolites in surface waters. The concentrations of the compounds found in surface waters ranged from 相似文献
3.
Corina Oldenburg Sudha Kanaujia Dieter Spiteller Neil J. Oldham Wilhelm Boland Karl-Ernst Kaissling 《Chemoecology》2001,11(4):183-190
Summary. Benzoic acid is a known stimulant of olfactory receptor cells in trichoid sensilla on the antennae of adult females of Bombyx mori. Exposure of freshly excised antennae, from B. mori females and males, to vapours of [14C]-benzoic acid revealed that the adsorbed acid is rapidly metabolized (15% conversion in 10 s), suggesting the presence of
a highly active enzymatic system. The major product could be identified as N-benzoylserine by use of [2H5]-benzoic acid, and mass spectrometry linked to a gas chromatograph (GC-MS) or a liquid chromatograph (LC-MS), for analysis
of the metabolites. The conjugation of benzoic acid with an amino acid apparently represents a novel mode for the rapid deactivation
of odorant molecules.
Received 26 March 2001. 相似文献
4.
W. Bader G. Becker M. Kiese Hans Ulrich Wilhelm Simon M. Czerny F. Stöckmann 《Die Naturwissenschaften》1952,39(15):356-360
5.
Wilhelm Neumann 《Die Naturwissenschaften》1951,38(21):485-486
6.
7.
8.
9.
10.