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   20篇
  免费   0篇
安全科学   1篇
环保管理   2篇
综合类   5篇
基础理论   3篇
污染及防治   7篇
评价与监测   2篇
  2017年   1篇
  2016年   1篇
  2013年   3篇
  2006年   3篇
  2005年   2篇
  2004年   1篇
  2002年   1篇
  2001年   2篇
  1985年   1篇
  1983年   1篇
  1979年   1篇
  1969年   1篇
  1968年   1篇
  1963年   1篇
排序方式: 共有20条查询结果,搜索用时 93 毫秒
1.
2.
This paper examines local sustainability concepts in Connemara, a predominantly rural region in the West of Ireland (in this paper, the term “Ireland” refers to the Republic of Ireland), to show how they are (re-)constituted through people's interactions with social and biophysical environments. We argue that these interactions produce diverse forms of lay environmental knowledge and expertise that encompass cognitive and emotional aspects, a fact that is frequently ignored in environmental policy-making which prioritises rational arguments over reactions rooted in people's sense of place and community. Local people's responses to this dominance of “official” rational-technical sustainability concepts are central to recent cases of environmental controversy and lack of compliance to environmental policies that have characterised the study area but that show many parallels to conflicts and disputes elsewhere. Drawing on rich qualitative evidence from interviews and ethnographic fieldwork, this paper demonstrates how communities' responses to environmental policies depend on how well (or poorly) sustainability concepts underpinning these policies match local people's social-ecological practices and related place-specific views of what should be sustained.  相似文献   
3.
Organic and elemental carbon and a number of carboxylic acids and n-alkanes were measured in aerosol samples collected at three sites in the Ohio River Valley between October 1980 and August 1981. Approximately 100 filters were analyzed for organic and elemental carbon for each site. For the 11-month period organic and elemental carbon comprised about 19 percent of the total aerosol mass with about two-thirds of the carbon as organic. Regression analysis showed that the principal source of organic carbon was combustion. The measurements of the specific organic compounds indicated a weak biogenic component to the organic aerosol.  相似文献   
4.
5.
6.
In order to understand the role of wild bees in both social and ecological systems, we conducted a quantitative and qualitative review of publications dealing with wild bees and the benefits they provide in social contexts. We classified publications according to several attributes such as services and benefits derived from wild bees, types of bee–human interactions, recipients of direct benefits, social contexts where wild bees are found, and sources of changes to the bee–human system. We found that most of the services and benefits from wild bees are related to food, medicine, and pollination. We also found that wild bees directly provide benefits to communities to a greater extent than individuals. In the social contexts where they are found, wild bees occupy a central role. Several drivers of change affect bee–human systems, ranging from environmental to political drivers. These are the areas where we recommend making interventions for conserving the bee-human system.  相似文献   
7.
Fang GC  Wu YS  Lin JB  Lin CK  Rau JY  Huang SH 《Chemosphere》2006,63(11):1912-1923
Air aerosol samples for TSP (total suspended particulate), coarse particulate (particle matter with aerodynamical diameter 2.5–10 μm, PM2.5–10), fine particulate (particle matter with aerodynamical diameter <2.5 μm, PM2.5) and metallic elements were collected during March 2004 to January 2005 at TH (Taichung Harbor) in central Taiwan. The seasonal variation average concentration of TSP (total suspended particulate), coarse particulate (particle matter with aerodynamical diameter 2.5–10 μm, PM2.5–10) and fine particulate (particle matter with aerodynamical diameter <2.5 μm, PM2.5) were in the range 132–171.1 μg m−3 and 43–49.5 μg m−3, respectively. Seasonal variation of metallic elements Cu, Mn, Zn and Fe in the TSP (total suspended particulate) shows that higher concentration was observed during spring. Seasonal variation of metallic elements Pb, Cr and Mg in the TSP (total suspended particulate) shows that higher concentration was observed during winter. The average metallic element TSP (total suspended particulate) concentration order was Fe > Zn > Mg > Cu > Cr > Mn > Pb in spring. In addition, at the TH sampling site, the average concentration variation of TSP (total suspended particulate) displayed the following order: spring > winter > autumn > summer. However, the average concentration variation of coarse particulate (particle matter with aerodynamical diameter 2.5–10 μm, PM2.5–10) displayed the following order: spring > winter > summer > autumn. Finally, the average concentration variations of fine particulate (particle matter with aerodynamical diameter <2.5 μm, PM2.5) were in the following order: winter > spring > summer > autumn at the TH sample site.  相似文献   
8.
This preview examines the background of UNCSTD, its agenda and objectives. It previews some issues concerning the choice and transfer of technology, a substantive item on the Conference agenda, and highlights the role in the Conference of scientists in natural resources and other fields.  相似文献   
9.
This research examined the impact of three organizational policies on applicant attraction of 120 older workers with an interest in bridge employment (i.e., work after formal retirement). Using a mock newspaper ad to manipulate policies, scheduling flexibility, and a targeted equal employment opportunity (EEO) statement positively influenced older workers' attraction to the organization, while opportunities to transfer knowledge had little impact. A significant and positive three‐way interaction suggested that older workers are sensitive to the strength of the overall message such that the effects of all three policies when seen together were greater than the sum of their individual effects. Copyright © 2005 John Wiley & Sons, Ltd.  相似文献   
10.
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