首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   100篇
  免费   0篇
安全科学   1篇
废物处理   2篇
环保管理   33篇
综合类   26篇
基础理论   17篇
污染及防治   10篇
评价与监测   5篇
社会与环境   6篇
  2023年   2篇
  2022年   1篇
  2021年   2篇
  2020年   1篇
  2019年   3篇
  2018年   2篇
  2016年   1篇
  2015年   6篇
  2014年   2篇
  2013年   5篇
  2012年   4篇
  2011年   4篇
  2010年   3篇
  2009年   6篇
  2008年   2篇
  2007年   5篇
  2006年   8篇
  2005年   1篇
  2004年   5篇
  2003年   1篇
  2002年   3篇
  2001年   7篇
  2000年   10篇
  1997年   2篇
  1995年   6篇
  1994年   2篇
  1993年   1篇
  1992年   3篇
  1990年   1篇
  1979年   1篇
排序方式: 共有100条查询结果,搜索用时 15 毫秒
1.
2.
European animal disease policy seems to find its justification in a “harm to other” principle. Limiting the freedom of animal keepers—e.g., by culling their animals—is justified by the aim to prevent harm, i.e., the spreading of the disease. The picture, however, is more complicated. Both during the control of outbreaks and in the prevention of notifiable, animal diseases the government is confronted with conflicting claims of stakeholders who anticipate running a risk to be harmed by each other, and who ask for government intervention. In this paper, we first argue that in a policy that aims to prevent animal diseases, the focus shifts from limiting “harm” to weighing conflicting claims with respect to “risks of harm.” Therefore, we claim that the harm principle is no longer a sufficient justification for governmental intervention in animal disease prevention. A policy that has to deal with and distribute conflicting risks of harm needs additional value assumptions that guide this process of assessment and distribution. We show that currently, policies are based on assumptions that are mainly economic considerations. In order to show the limitations of these considerations, we use the interests and position of keepers of backyard animals as an example. Based on the problems they faced during and after the recent outbreaks, we defend the thesis that in order to develop a sustainable animal disease policy other than economic assumptions need to be taken into account.  相似文献   
3.
4.
Three types of concern for animal welfare are widelyheld: Animals should feel well, they should function well, andthey should lead natural lives. The paper deals with a well-knownanswer to the question of why such concerns are morallyappropriate: Human beings have direct duties towards animals,because animals are beings that can flourish, the flourishing ofanimals is intrinsically or inherently valuable, and that whichis conducive to their flourishing is a legitimate object of moralconcern. Looking for a tenable conception of direct dutiestowards animals, the following questions are discussed: Whatshould we take it to mean that ``animal flourishing isintrinsically or inherently valuable?'' Under what conditions doesa living being's ability to flourish create direct duties towardsthis being? Is awareness or sentience required for there to bedirect duties towards a living being? Does such a requirementimply that moral concerns for animals would be limited to theirfeeling well, or does it also give way to having moral concernsfor their functioning well and leading natural lives? Can onetake into account considered judgements that claim that towardsdifferent animals we have moral duties that differ in kind and/orstrength? If environmental ethics cannot be based on theconception of direct duties here discussed, should one draw adistinction between duties towards ourselves, our fellow humanbeings, or animals, and duties regarding plants, or collectiveentities such as populations, species, and ecosystems?  相似文献   
5.
6.
In this paper, we present and defend the theoretical framework of an empirical model to describe people’s fundamental moral attitudes (FMAs) to animals, the stratification of FMAs in society and the role of FMAs in judgment on the culling of healthy animals in an animal disease epidemic. We used philosophical animal ethics theories to understand the moral basis of FMA convictions. Moreover, these theories provide us with a moral language for communication between animal ethics, FMAs, and public debates. We defend that FMA is a two-layered concept. The first layer consists of deeply felt convictions about animals. The second layer consists of convictions derived from the first layer to serve as arguments in a debate on animal issues. In a debate, the latter convictions are variable, depending on the animal issue in a specific context, time, and place. This variability facilitates finding common ground in an animal issue between actors with opposing convictions.  相似文献   
7.
8.
Despite their relevance for risk assessment, the interactive effects of pesticide and predation cues are poorly understood because the underlying behavioral and physiological mechanisms are largely unknown. To explore these mechanisms, we reared larvae of the damselfly Coenagrion puella at three different predation risk levels and a range of environmentally realistic concentrations of three pesticides used worldwide (atrazine, carbaryl, and endosulfan). We compared key development responses (growth rate, developmental time, and final size) against food ingestion, assimilation, and conversion efficiency, and acetylcholinesterase (AChE) activity. Predation risk impaired all endpoints, including AChE activity, while the effects of pesticide stress were smaller for atrazine and endosulfan and absent for carbaryl. The effects of both stressors and their interaction on life history were mostly indirect through resource acquisition and energy allocation. Compensatory physiological mechanisms to pesticide stress (atrazine and endosulfan) were present in larvae reared in the absence of predation stress but were offset under predation stress. As a result, smaller size (atrazine and endosulfan) and lower growth rate (endosulfan) from pesticide stress were only found in the highest predation risk treatment. Our results provide insight as to the conditions under which interactions between stressors are likely to occur: damselfly populations at high density and living in fish ponds will be more affected by pesticides than populations at low densities in fishless ponds. By identifying variables that may shape the interaction between predation stress and other stressors such as pesticides, our mechanistic approach may help to bridge the gap between laboratory and field studies.  相似文献   
9.
10.
A prenatally detected case of a rare mosaic tetrasomy 12p/trisomy 12p is reported, presenting as the well-known accessory isochromosome 12p and a supernumerary single 12p marker in 17/24 and 6/24 clones of cultured amniotic fluid cells, respectively. The chromosomal nature of both marker chromosomes was investigated in cultured amniotic fluid cells by fluorescent in situ hybridization with various probes: the 12-centromeric probes pa12H8 and D12Z3, a whole chromosome 12 paint, and the chromosome 12p-specific paint M28. DNA analysis revealed a maternal origin of the extra 12p material. After counselling, the parents requested termination of pregnancy. Inspection and autopsy of the fetus revealed many of the dysmorphisms and internal structural abnormalities of the Pallister–Killian syndrome.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号