全文获取类型
收费全文 | 138篇 |
免费 | 1篇 |
国内免费 | 1篇 |
专业分类
安全科学 | 7篇 |
废物处理 | 4篇 |
环保管理 | 33篇 |
综合类 | 23篇 |
基础理论 | 21篇 |
污染及防治 | 27篇 |
评价与监测 | 15篇 |
社会与环境 | 10篇 |
出版年
2022年 | 5篇 |
2021年 | 2篇 |
2020年 | 1篇 |
2019年 | 1篇 |
2018年 | 1篇 |
2017年 | 5篇 |
2016年 | 7篇 |
2015年 | 2篇 |
2014年 | 7篇 |
2013年 | 12篇 |
2012年 | 7篇 |
2011年 | 2篇 |
2010年 | 4篇 |
2009年 | 12篇 |
2008年 | 8篇 |
2007年 | 9篇 |
2006年 | 6篇 |
2005年 | 4篇 |
2004年 | 6篇 |
2003年 | 5篇 |
2002年 | 2篇 |
2000年 | 1篇 |
1999年 | 2篇 |
1998年 | 3篇 |
1997年 | 1篇 |
1996年 | 1篇 |
1995年 | 1篇 |
1994年 | 3篇 |
1993年 | 3篇 |
1992年 | 3篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1987年 | 3篇 |
1986年 | 1篇 |
1985年 | 1篇 |
1983年 | 3篇 |
1982年 | 1篇 |
1980年 | 1篇 |
1977年 | 1篇 |
1976年 | 1篇 |
排序方式: 共有140条查询结果,搜索用时 156 毫秒
91.
92.
93.
Juliet A. Durant Virginia K. Lowry David J. Nisbet Larry H. Stanker Donald E. Corrier Steven C. Ricke 《Journal of environmental science and health. Part. B》2013,48(6):1083-1099
Abstract This study demonstrates that the growth of S. typhimurium in Luria Bertani broth supplemented with acetate, propionate, butyrate, or a mixture of the three SCFA, affected cell‐association and the ability to invade cultured HEp‐2 cells. Cell‐association and invasion was determined after growth for 4 h of growth in the presence of the SCFA at pH 6 and 7. The results suggest that the growth rate of the culture may have affected cell‐association and invasion since accompanying the significant decrease in growth rate in the presence of SCFA at pH 6 was a decrease in cell‐association and invasion. However, the results also suggest that the individual SCFA may play a role in modulating cell‐association and the invasion phenotype and the regulation of cell‐association and invasion by the SCFA was dependent on the concentration and the pH of the medium. Although the growth rates were similar for S. typhimurium in the SCFA mixture, butyrate (100 mM) and propionate (50 mM) at pH 6, differences in cell‐association and invasion were observed among these cultures. Also, at pH 7, differences were observed among the SCFA treatments even though the growth rates were similar. 相似文献
94.
95.
This paper presents the story of a project undertaken by researchers who are active participants in the national Australian debate over place and belonging. It arose from the desire to ground this debate, which brings issues of ecological sustainability, reconciliation and multiculturalism together, in more localised action aimed at building a ‘place‐responsive society’. The project was carried out as a case study in a region that combines part of the Sydney metropolitan area and the separate ‘city’ of the Blue Mountains, and involved a consultative committee and then a regional forum of conservationists, environmental educators and community workers. The researchers explored existing place‐oriented initiatives in the region and developed practical projects for the future, most notably a proposal for ‘totemic species’ work within schools involving local Aboriginal people. The research demonstrated, more than anything else, that indigenous Australian approaches to ‘place awareness’ and nature conservation remain highly relevant in contemporary Australia. It also showed that bioregional awareness and the notion of place responsiveness can add value to more traditional approaches to nature conservation and environmental education. There are opportunities to galvanise local action that can integrate community and environmental work and revitalise professional practice in both areas, but the effort involves working constantly with difference and conflict. 相似文献
96.
Virginia Brook 《Local Environment》2005,10(6):613-627
In the last decade the concept of sustainable development has been widely embraced as the key to environmentally friendly development. However, in many instances the physical sustainability side of the equation stops at a rhetorical level and the ensuing developments fail to respond to ecological imperatives or to protect existing ecological values. Nowhere is this failure more evident than at the urban fringes of Melbourne, Australia, where residential land estate developments relentlessly engulf degraded agricultural lands that often contain the remnants of vegetative and hydrological ecological systems.
This paper postulates that while landscape design practitioners claim the 'authority of nature' (and, by extension, the land) for their design inspiration, in reality narrow practice foci and instrumental approaches have meant that the design of estates and subdivisions often make only token reference to ecological underpinnings. It is argued that instrumental influences on design decision-making are embedded in landscape-architectural professional culture and glossed over with an elusive rhetoric of care and concern for the environment. It is further postulated that individual expressions of interest in the land and its systems can make a substantive contribution to sustainable design practice and practical outcomes. 相似文献
This paper postulates that while landscape design practitioners claim the 'authority of nature' (and, by extension, the land) for their design inspiration, in reality narrow practice foci and instrumental approaches have meant that the design of estates and subdivisions often make only token reference to ecological underpinnings. It is argued that instrumental influences on design decision-making are embedded in landscape-architectural professional culture and glossed over with an elusive rhetoric of care and concern for the environment. It is further postulated that individual expressions of interest in the land and its systems can make a substantive contribution to sustainable design practice and practical outcomes. 相似文献
97.
98.
Virginia L. Corson Roger C. Sanders Timothy R. B. Johnson Jr. Kevin J. Winn 《黑龙江环境通报》1983,3(1):47-51
Two cases are reported in which an unusual ultrasound finding preceded diagnostic amniocentesis and led to further work-up. In both cases a decision was made to terminate the pregnancy. One fetus in which a neck mass was detected by ultrasound was shown to be normal on post-mortem examination. The second fetus was aborted because of Rh sensitization and had the abnormality seen by ultrasound. However, this lesion, calcified intrahepatic plaques, had no presumed pathological significance. These cases suggest caution in the interpretation of results obtained with the new technologies used for prenatal diagnosis. 相似文献
99.
Michelle Casey Chris Gennings W Hans Carter Jr Virginia C Moser Jane Ellen Simmons 《Environmental and Ecological Statistics》2006,13(1):11-23
Response surface methodology, often supported by factorial designs, is the classical experimental approach that is widely
accepted for detecting and characterizing interactions among chemicals in a mixture. In an effort to reduce the experimental
effort as the number of compounds under study is increased, ray designs have been proposed to study combinations of chemicals.
When interest is restricted to relevant mixing ratios, we are only interested in making inference along the specific rays
of interest, as opposed to methods which use designs that require more experimental effort to support the estimation of a
response surface over a broader experimental region. Methods have been developed for the test of additivity along multiple
fixed-ratio rays. Of primary importance is the detection of interactions with reasonable power. The objective of this paper
is to address power and sample size issues related to the hypothesis of no interaction. 相似文献
100.
Virginia C. Welford Richard A. Block Jonathan W. Bulkley 《Journal of the American Water Resources Association》1987,23(5):803-807
ABSTRACT: The production of a documentary video in a graduate seminar offers advantages over the traditional term paper. These advantages derive from the nature of the videotape medium. The most distinct difference between a written document and a video production is the use of the video camera to record events. In using the camera, the student is required to become involved both in front of the video camera, for example, as an interviewer, and behind the camera as a camera operator. Next, as an editor, the student is required to review the events that she/he has taped for inclusion in the final product. By participating in these three roles, the student has the opportunity to learn interviewing skills while interacting with professionals in the field, to learn videotaping skills, and to see him/herself as he/she appears to others. The student can use the video feedback to improve his/her professional presentation; posture, dress, gestures, speech, and facial expressions all have an impact on how we are perceived by others. Additionally, the painstaking process of reviewing the taped material leads to an intimate knowledge of the topic, and the process of choosing portions out of entire interviews hones the ability to select the crucial or central themes and ideas from any discussion. Finally, the power of video lies in its ability to communicate information to a wide audience. Although the nature of video for the general public does not permit highly detailed or rigorous coverage of any topic, it is a major source of information. Accordingly, video is an important tool that can be used to inform the public about the importance of wise water resource management. 相似文献