全文获取类型
收费全文 | 230篇 |
免费 | 5篇 |
国内免费 | 4篇 |
专业分类
安全科学 | 11篇 |
废物处理 | 6篇 |
环保管理 | 21篇 |
综合类 | 44篇 |
基础理论 | 109篇 |
污染及防治 | 34篇 |
评价与监测 | 5篇 |
社会与环境 | 9篇 |
出版年
2021年 | 3篇 |
2020年 | 2篇 |
2019年 | 1篇 |
2018年 | 8篇 |
2017年 | 5篇 |
2016年 | 12篇 |
2015年 | 5篇 |
2014年 | 11篇 |
2013年 | 15篇 |
2012年 | 12篇 |
2011年 | 14篇 |
2010年 | 18篇 |
2009年 | 10篇 |
2008年 | 11篇 |
2007年 | 8篇 |
2006年 | 8篇 |
2005年 | 7篇 |
2004年 | 30篇 |
2003年 | 3篇 |
2002年 | 2篇 |
2001年 | 4篇 |
1999年 | 2篇 |
1998年 | 1篇 |
1997年 | 2篇 |
1995年 | 2篇 |
1993年 | 2篇 |
1988年 | 1篇 |
1984年 | 1篇 |
1982年 | 1篇 |
1981年 | 3篇 |
1980年 | 4篇 |
1979年 | 7篇 |
1978年 | 1篇 |
1977年 | 4篇 |
1976年 | 9篇 |
1975年 | 4篇 |
1958年 | 1篇 |
1938年 | 1篇 |
1937年 | 1篇 |
1932年 | 1篇 |
1926年 | 1篇 |
1924年 | 1篇 |
排序方式: 共有239条查询结果,搜索用时 15 毫秒
201.
202.
203.
204.
Andersson KG Nielsen SP Thørring H Hansen HS Joensen HP Isaksson M Kostiainen E Suolanen V Pálsson SE 《Journal of environmental radioactivity》2011,102(11):1024-1031
The ECOSYS model is the ingestion dose model integrated in the ARGOS and RODOS decision support systems for nuclear emergency management. The parameters used in this model have however not been updated in recent years, where the level of knowledge on various environmental processes has increased considerably. A Nordic work group has carried out a series of evaluations of the general validity of current ECOSYS default parameters. This paper specifically discusses the parameter revisions required with respect to the modelling of deposition and natural weathering of contaminants on agricultural crops, to enable the trustworthy prognostic modelling that is essential to ensure justification and optimisation of countermeasure strategies. New modelling approaches are outlined, since it was found that current ECOSYS approaches for deposition and natural weathering could lead to large prognostic errors. 相似文献
205.
Reduced take-off ability in robins (Erithacus rubecula) due to migratory fuel load 总被引:11,自引:0,他引:11
Lind Johan Fransson Thord Jakobsson Sven Kullberg Cecillia 《Behavioral ecology and sociobiology》1999,46(1):65-70
Recent studies have shown that large fuel loads in small birds impair flying ability. This is the first study to show how
migratory fuel load affects flying ability, such as velocity and height gained at take-off in a predator escape situation,
in a medium-distance migrant, and whether they adjust their take-off according to predator attack angle. First-year robins
(Erithacus rubecula) were subjected to simulated attacks from a model merlin (Falco columbarius), and take-off velocity and angle were analysed. Robins with a wing load of 0.19 g cm−2 took off at a 39% lower angle than robins with a wing load of 0.13 g cm−2, while velocity remained unaffected. The robins did not adjust their angle of ascent in accordance with the predator's angle
of attack. Since many predators rely on surprise attacks, a difference in flight ability due to varying fuel loads found in
migrating robins can be important for birds' chances of survival when actually attacked.
Received: 28 October 1998 / Received in revised form: 12 January 1999 / Accepted: 30 January 1999 相似文献
206.
207.
208.
209.
Sven Hörstadius 《Die Naturwissenschaften》1932,20(21):363-363
210.
Introducing the Arnold Berliner Award 总被引:3,自引:3,他引:0
Sven Thatje 《Die Naturwissenschaften》2012,99(9):675-676