全文获取类型
收费全文 | 432篇 |
免费 | 0篇 |
国内免费 | 11篇 |
专业分类
安全科学 | 8篇 |
废物处理 | 13篇 |
环保管理 | 31篇 |
综合类 | 263篇 |
基础理论 | 36篇 |
污染及防治 | 79篇 |
评价与监测 | 7篇 |
社会与环境 | 6篇 |
出版年
2021年 | 7篇 |
2014年 | 4篇 |
2013年 | 13篇 |
2012年 | 8篇 |
2011年 | 11篇 |
2010年 | 11篇 |
2009年 | 18篇 |
2008年 | 14篇 |
2007年 | 10篇 |
2006年 | 10篇 |
2005年 | 8篇 |
2004年 | 9篇 |
2003年 | 9篇 |
2002年 | 9篇 |
2001年 | 12篇 |
2000年 | 6篇 |
1999年 | 4篇 |
1998年 | 4篇 |
1997年 | 5篇 |
1995年 | 7篇 |
1994年 | 7篇 |
1993年 | 5篇 |
1984年 | 5篇 |
1978年 | 4篇 |
1977年 | 4篇 |
1975年 | 5篇 |
1968年 | 4篇 |
1963年 | 6篇 |
1961年 | 9篇 |
1960年 | 6篇 |
1959年 | 5篇 |
1958年 | 12篇 |
1957年 | 6篇 |
1955年 | 6篇 |
1954年 | 5篇 |
1943年 | 5篇 |
1941年 | 5篇 |
1939年 | 4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 |
1920年 | 3篇 |
1919年 | 5篇 |
1916年 | 3篇 |
1915年 | 3篇 |
1914年 | 6篇 |
1913年 | 5篇 |
排序方式: 共有443条查询结果,搜索用时 312 毫秒
1.
2.
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
3.
The potential health risks due to inorganic substances, mainly metals, was evaluated for the two resident marine mammals in Hong Kong, the Indo-Pacific Humpback Dolphin (Sousa chinensis) and the Finless Porpoise (Neophocaena phocaenoides). The stomachs from the carcasses of twelve stranded dolphins and fifteen stranded porpoises were collected and the contents examined. Concentrations of thirteen trace elements (Ag, As, Cd, Co, Cr, Cs, Cu, Hg, Mn, Ni, Se, V and Zn) were determined by inductively coupled plasma mass spectrometer (ICP-MS). An assessment of risks of adverse effects was undertaken using two toxicity guideline values, namely the Reference Dose (RfD), commonly used in human health risk assessment, and the Toxicity Reference Value (TRV), based on terrestrial mammal data. The levels of trace metals in stomach contents of dolphins and porpoises were found to be similar. Risk quotients (RQ) calculated for the trace elements showed that risks to the dolphins and porpoises were generally low and within safe limits using the values based on the TRV, which are less conservative than those based on the RfD values. Using the RfD-based values the risks associated with arsenic, cadmium, chromium, copper, nickel and mercury were comparatively higher. The highest RQ was associated with arsenic, however, most of the arsenic in marine organisms should be in the non-toxic organic form, and thus the calculated risk is likely to be overestimated. 相似文献
4.
Die Riechschwelle des Seidenspinners 总被引:4,自引:0,他引:4
5.
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
6.
7.
Ernst Lamla 《Die Naturwissenschaften》1961,48(6):145-145
8.
The Science of Nature - 相似文献
9.
10.