全文获取类型
收费全文 | 154篇 |
免费 | 2篇 |
国内免费 | 2篇 |
专业分类
安全科学 | 3篇 |
废物处理 | 2篇 |
环保管理 | 16篇 |
综合类 | 52篇 |
基础理论 | 25篇 |
污染及防治 | 35篇 |
评价与监测 | 8篇 |
社会与环境 | 8篇 |
灾害及防治 | 9篇 |
出版年
2022年 | 2篇 |
2020年 | 2篇 |
2019年 | 1篇 |
2018年 | 7篇 |
2017年 | 1篇 |
2016年 | 7篇 |
2015年 | 3篇 |
2014年 | 3篇 |
2013年 | 8篇 |
2012年 | 6篇 |
2011年 | 10篇 |
2010年 | 6篇 |
2009年 | 7篇 |
2008年 | 7篇 |
2007年 | 8篇 |
2006年 | 10篇 |
2005年 | 4篇 |
2004年 | 4篇 |
2003年 | 3篇 |
2002年 | 5篇 |
2001年 | 3篇 |
2000年 | 2篇 |
1999年 | 4篇 |
1998年 | 1篇 |
1997年 | 1篇 |
1996年 | 4篇 |
1995年 | 6篇 |
1993年 | 3篇 |
1991年 | 1篇 |
1990年 | 2篇 |
1989年 | 1篇 |
1986年 | 1篇 |
1983年 | 1篇 |
1978年 | 2篇 |
1975年 | 1篇 |
1973年 | 1篇 |
1966年 | 1篇 |
1965年 | 3篇 |
1964年 | 1篇 |
1962年 | 3篇 |
1960年 | 1篇 |
1956年 | 1篇 |
1955年 | 3篇 |
1953年 | 1篇 |
1950年 | 2篇 |
1943年 | 1篇 |
1940年 | 1篇 |
1926年 | 1篇 |
1913年 | 1篇 |
排序方式: 共有158条查询结果,搜索用时 15 毫秒
41.
Derwent RG Stevenson DS Doherty RM Collins WJ Sanderson MG Johnson CE Cofala J Mechler R Amann M Dentener FJ 《Ambio》2005,34(1):54-59
A global three-dimensional Lagrangian chemistry-transport model STOCHEM is used to describe the European regional acid deposition and ozone air quality impacts along the Atlantic Ocean seaboard of Europe, from the SO2, NOx, VOCs and CO emissions from international shipping under conditions appropriate to the year 2000. Model-derived total sulfur deposition from international shipping reaches over 200 mg S m(-2) yr(-1) over the southwestern approaches to the British Isles and Brittany. The contribution from international shipping to surface ozone concentrations during the summertime, peaks at about 6 ppb over Ireland, Brittany and Portugal. Shipping emissions act as an external influence on acid deposition and ozone air quality within Europe and may require control actions in the future if strict deposition and air quality targets are to be met. 相似文献
42.
Anne Theenhaus Reinhard Zeitler Wolfgang von Brackel Helmut -Julius Botsch Wolfgang Baumeister Ludwig Peichl 《Environmental Sciences Europe》2002,14(4):229-236
Ecological monitoring of genetically engineered plants (GEPs) is being developed in the Bavarian Environmental Protection Agency. Focusing on oilseed rape (Brassica napus, Cruciferae), a method is being established to measure the impact of the commercial release of GEPs on plant communities. Oilseed rape is known to escape from cultures and to establish outside the fields. It also produces hybrid offspring with wild relatives of the European flora. The study site is located in Bavaria (Germany) and comprises an area of 5700 ha. It is characterized by a mosaic of protected natural habitats in close vicinity to intensively cultivated farmland. In this region species composition and population density of Cruciferae is documented prior to a possible commercial release of GEPs. Furthermore Cruciferae of the study site are tested for the presence of transgenes. Therefore, plant material of selected Cruciferae is randomly sampled. We also test oilseed rape honey from the study site and pollen from pollen traps for the presence of hybrid pollen. The molecular method used is the ‘real-time PCR’. In addition, an intensive monitoring program is established in two types of biotopes, which are located in the study site. Multivariate statistics are being used to correlate plant community data with soil parameters. 相似文献
43.
采用单通道流动注射 -新试铜灵荧光熄灭法测定水环境中重金属离子Cu(Ⅱ )。在新试铜灵的浓度为 2 5×10 - 5mol L ,激发波长为 2 81nm ,发射波长为 419nm下 ,Cu(Ⅱ )浓度为 0 12 5~ 5mg L范围内 ,荧光强度与Cu(Ⅱ )浓度呈线性关系 ,检出限 0 0 76mg L ,进样速率 90次 min ,对 3mg L的Cu(Ⅱ ) 10次测定的相对标准偏差为 0 32 %~ 2 97% ,河水和矿井水中加标回收率为 95 %~ 10 5 %。该方法选择性好 ,适合于水环境大批量样品中微量铜的快速测定 相似文献
44.
Reinhard W. Kaplan 《Die Naturwissenschaften》1950,37(11):249-254
45.
Reinhard W. Kaplan 《Die Naturwissenschaften》1950,37(12):276-284
46.
47.
48.
49.
Filoviruses are enveloped, nonsegmented negative-stranded RNA viruses. The two species, Marburg and Ebola virus, are serologically, biochemically, and genetically distinct. Marburg virus was first isolated during an outbreak in Europe in 1967, and Ebola virus emerged in 1976 as the causative agent of two simultaneous outbreaks in southern Sudan and northern Zaire. Although the main route of infection is known to be person-to-person transmission by intimate contact, the natural reservoir for filoviruses still remains a mystery. 相似文献
50.