全文获取类型
收费全文 | 411篇 |
免费 | 2篇 |
国内免费 | 4篇 |
专业分类
安全科学 | 5篇 |
废物处理 | 5篇 |
环保管理 | 42篇 |
综合类 | 275篇 |
基础理论 | 34篇 |
污染及防治 | 45篇 |
评价与监测 | 8篇 |
社会与环境 | 3篇 |
出版年
2023年 | 4篇 |
2021年 | 8篇 |
2018年 | 5篇 |
2016年 | 5篇 |
2013年 | 6篇 |
2012年 | 8篇 |
2011年 | 10篇 |
2010年 | 6篇 |
2009年 | 10篇 |
2008年 | 11篇 |
2007年 | 6篇 |
2006年 | 4篇 |
2005年 | 6篇 |
2004年 | 7篇 |
2003年 | 5篇 |
2002年 | 7篇 |
2001年 | 8篇 |
2000年 | 8篇 |
1995年 | 7篇 |
1994年 | 5篇 |
1993年 | 6篇 |
1984年 | 5篇 |
1978年 | 6篇 |
1977年 | 5篇 |
1975年 | 7篇 |
1974年 | 4篇 |
1971年 | 5篇 |
1969年 | 5篇 |
1968年 | 4篇 |
1963年 | 6篇 |
1961年 | 10篇 |
1960年 | 7篇 |
1959年 | 7篇 |
1958年 | 12篇 |
1957年 | 6篇 |
1955年 | 6篇 |
1954年 | 6篇 |
1943年 | 5篇 |
1941年 | 5篇 |
1939年 | 6篇 |
1938年 | 5篇 |
1937年 | 4篇 |
1935年 | 4篇 |
1934年 | 4篇 |
1928年 | 5篇 |
1923年 | 6篇 |
1919年 | 5篇 |
1915年 | 3篇 |
1914年 | 6篇 |
1913年 | 5篇 |
排序方式: 共有417条查询结果,搜索用时 15 毫秒
1.
Fritz Nüßlein Ernst Anton Feicht Sigurd Schulte-Hostede Antonius Kettrup 《Environmental Sciences Europe》1997,9(3):136-142
A site contaminated by mercury serves as an example for evaluating the environmental medicine aspects of mercury emissions on individuals living in the surroundings. Based on defined, conventional scenarios, estimations of internal exposure were made for seven different age groups and with regard to such contact media as soil, air and food. Using human monitoring methods, an attempt was made to compare the epidemiological results. The site-specific and pathway-specific estimation of exposure is based on a multitude of various samples as well as on measurements of concentrations in the compartments relevant for intake. As based upon rigid guideline values, both these calculations and the epidemiological investigations reveal a slight increase in the mercury exposure. 相似文献
2.
Die Riechschwelle des Seidenspinners 总被引:4,自引:0,他引:4
3.
Henneken H Lindahl R Ostin A Vogel M Levin JO Karst U 《Journal of environmental monitoring : JEM》2003,5(1):100-105
A diffusive sampling method for the determination of methyl isocyanate (MIC) in air is introduced. MIC is collected using a glass fiber filter impregnated with 4-nitro-7-piperazinobenzo-2-oxa-1,3-diazole (NBDPZ). The urea derivative formed is desorbed from the filter with acetonitrile and analyzed by means of high-performance liquid chromatography (HPLC) using fluorescence detection (FLD) with lambdaex = 471 nm and lambdaex = 540 nm. Additionally, a method was developed using tandem mass spectrometric (MS-MS) detection, which was performed as selected reaction monitoring (SRM) on the transition [MIC-NBDPZ + H]+ (m/z 307) to [NBDPZ + H]+ (m/z 250). The diffusive sampler was tested with MIC concentrations between 1 and 35 microg m(-3). The sampling periods varied from 15 min to 8 h, and the relative humidity (RH) was set from 20% up to 80%. The sampling rate for all 15 min experiments was determined to be 15.0 mL min(-1) (using HPLC-FLD) with a relative standard deviation of 9.9% for 56 experiments. At 80% RH, only 15 min sampling gave acceptable results. Further experiments revealed that humidity did not affect the MIC derivative but the reagent on the filter prior to and during sampling. The sampling rate for all experiments (including long term sampling) performed at 20% RH was found to be 15.0 mL min(-1) with a relative standard deviation of 6.3% (N = 42). The limit of quantification was 3 microg m(-3) (LC-MS-MS: 1.3 microg m(-3)) for 15 min sampling periods and 0.2 microg m(-3) (LC-MS-MS: 0.15 microg m(-3)) for 8 h sampling runs applying fluorescence detection. 相似文献
4.
E. Lamla F. Boschke G. Traving G. Pfotzer H. Wolter W. Walcher H. D. Dahmen H. J. Queisser W. W. Klingbeil K. Beyermann O. Müller R. R. Ernst D. Reinen H. Muth W. Becker G. Wunsch G. I. Distler L. Jaenicke H. G. v. Schnering H. Werner F. Reiff H. Schimassek W. Höll H. K. Vasil W. F. Angermeier W. Ruppel J. C. Eccles G. Spiteller H. Oettel W. Vogell P. Brosche K. J. Hsü H. -U. Schmincke 《Die Naturwissenschaften》1975,62(3):143-143
5.
6.
7.
8.
Ernst Lamla 《Die Naturwissenschaften》1961,48(6):145-145
9.
The Science of Nature - 相似文献
10.