全文获取类型
收费全文 | 262篇 |
免费 | 1篇 |
国内免费 | 4篇 |
专业分类
安全科学 | 4篇 |
废物处理 | 6篇 |
环保管理 | 16篇 |
综合类 | 118篇 |
基础理论 | 65篇 |
污染及防治 | 34篇 |
评价与监测 | 10篇 |
社会与环境 | 13篇 |
灾害及防治 | 1篇 |
出版年
2017年 | 6篇 |
2016年 | 2篇 |
2015年 | 5篇 |
2014年 | 2篇 |
2013年 | 6篇 |
2012年 | 13篇 |
2011年 | 13篇 |
2010年 | 9篇 |
2009年 | 8篇 |
2008年 | 8篇 |
2007年 | 14篇 |
2006年 | 5篇 |
2005年 | 6篇 |
2004年 | 9篇 |
2003年 | 6篇 |
2002年 | 11篇 |
2001年 | 5篇 |
2000年 | 5篇 |
1999年 | 5篇 |
1998年 | 6篇 |
1997年 | 4篇 |
1996年 | 4篇 |
1995年 | 3篇 |
1994年 | 4篇 |
1992年 | 4篇 |
1990年 | 2篇 |
1989年 | 2篇 |
1984年 | 2篇 |
1982年 | 3篇 |
1981年 | 4篇 |
1978年 | 2篇 |
1977年 | 3篇 |
1967年 | 5篇 |
1966年 | 4篇 |
1965年 | 10篇 |
1964年 | 8篇 |
1963年 | 9篇 |
1962年 | 6篇 |
1961年 | 5篇 |
1960年 | 4篇 |
1959年 | 2篇 |
1957年 | 2篇 |
1956年 | 2篇 |
1954年 | 5篇 |
1951年 | 2篇 |
1942年 | 2篇 |
1940年 | 2篇 |
1939年 | 2篇 |
1932年 | 1篇 |
1925年 | 2篇 |
排序方式: 共有267条查询结果,搜索用时 15 毫秒
261.
This paper reports on a life‐cycle analysis (LCA) of Taiwan's “agriculture and forestry”, “crude petroleum, coal and natural gas extraction” and “electricity generation” sectors, revealing for the first time Taiwan's CO2 and CH4 emissions inventories and matching Taiwan's input‐output sectors. Integrated hybrid input‐output life cycle analysis is used to disaggregate the electricity generation sector into nuclear, hydro, gas, oil and coal, and cogeneration. Results show that the fossil‐fuel‐related electricity sub‐sectors have higher CO2 emissions intensity than the remaining sectors in the economy and that the “paddy rice” sector is Taiwan's most CH4‐intensive sector, making rice cultivation an important source of CH4 emissions. This work is vital to sound policy decisions concerning power generation, coal, and agriculture and forestry at the national level. 相似文献
262.
263.
264.
265.
266.
Schmidt G Pesch R Schröder W Conrad A Kolossa-Gehring M Feigenspan S Dobler L Wiesmüller GA Birke M Utermann J 《Environmental geochemistry and health》2011,33(4):399-408
This study aimed at statistically investigating the association between the internal exposure of children and young adults
to uranium (U) and epidemiologically relevant external determinants of exposure. The investigation was performed with data
from two studies within the framework of the German health-related environmental monitoring program: The German Environmental Survey for Children (GerES IV) conducted by the Federal Environment Agency (Umweltbundesamt) with data on 1,780 children 3–14 years of age and their home environment and the German Environmental Specimen Bank (ESB, section: human specimens) with data on 2,253 students 20–29 years of age. Both studies provided data on the U levels in human urine for all probands.
GerES IV furthermore provided an extensive environmental and demographic database on, e.g., U levels in drinking water. The
data from GerES IV and ESB were linked by GIS to spatially relevant exposure information, including background values of U
in stream sediments and in upper and lower soils, U levels in mosses and particulate matter in the lower atmosphere, precipitation
and elevation as well as forest density. Bivariate correlation analysis and two decision tree models showed moderate but significant
associations between U in human urine and U levels in drinking water, stream sediments and upper and lower soils. Future investigations
considering additional epidemiologically relevant data sets may differentiate the results. Furthermore, the sample design
of future environmental epidemiology studies should take the spatial evaluation of the data into greater account. 相似文献
267.