全文获取类型
收费全文 | 218篇 |
免费 | 10篇 |
国内免费 | 11篇 |
专业分类
安全科学 | 2篇 |
环保管理 | 17篇 |
综合类 | 159篇 |
基础理论 | 25篇 |
环境理论 | 3篇 |
污染及防治 | 2篇 |
评价与监测 | 2篇 |
社会与环境 | 20篇 |
灾害及防治 | 9篇 |
出版年
2023年 | 1篇 |
2022年 | 4篇 |
2021年 | 3篇 |
2020年 | 1篇 |
2019年 | 8篇 |
2018年 | 13篇 |
2017年 | 7篇 |
2016年 | 5篇 |
2015年 | 3篇 |
2014年 | 2篇 |
2013年 | 5篇 |
2012年 | 5篇 |
2011年 | 17篇 |
2010年 | 16篇 |
2009年 | 8篇 |
2008年 | 12篇 |
2007年 | 10篇 |
2006年 | 12篇 |
2005年 | 11篇 |
2004年 | 6篇 |
2003年 | 13篇 |
2002年 | 16篇 |
2001年 | 14篇 |
2000年 | 6篇 |
1998年 | 3篇 |
1997年 | 1篇 |
1996年 | 1篇 |
1995年 | 5篇 |
1994年 | 6篇 |
1993年 | 4篇 |
1992年 | 3篇 |
1991年 | 1篇 |
1989年 | 3篇 |
1988年 | 6篇 |
1985年 | 1篇 |
1984年 | 2篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1981年 | 3篇 |
排序方式: 共有239条查询结果,搜索用时 15 毫秒
61.
62.
Objectives: In this study, we aimed to determine whether three minimum legal drinking age 21 (MLDA-21) laws—dram shop liability, responsible beverage service (RBS) training, and state control of alcohol sales—have had an impact on underage drinking and driving fatal crashes using annual state-level data, and compared states with strong laws to those with weak laws to examine their effect on beer consumption and fatal crash ratios.Methods: Using the Fatality Analysis Reporting System, we calculated the ratio of drinking to nondrinking drivers under age 21 involved in fatal crashes as our key outcome measure. We used structural equation modeling to evaluate the three MLDA-21 laws. We controlled for covariates known to impact fatal crashes including: 17 additional MLDA-21 laws; administrative license revocation; blood alcohol concentration limits of.08 and.10 for driving; seat belt laws; sobriety checkpoint frequency; unemployment rates; and vehicle miles traveled. Outcome variables, in addition to the fatal crash ratios of drinking to nondrinking drivers under age 21 included state per capita beer consumption.Results: Dram shop liability laws were associated with a 2.4% total effect decrease (direct effects: β =.019, p =.018). Similarly, RBS training laws were associated with a 3.6% total effect decrease (direct effect: β =.048, p =.001) in the ratio of drinking to nondrinking drivers under age 21 involved in fatal crashes. There was a significant relationship between dram shop liability law strength and per capita beer consumption, F (4, 1528) = 24.32, p <.001, partial η2 =.016, showing states with strong dram shop liability laws (Mean (M) = 1.276) averaging significantly lower per capita beer consumption than states with weak laws (M = 1.340).Conclusions: Dram shop liability laws and RBS laws were both associated with significantly reduced per capita beer consumption and fatal crash ratios. In practical terms, this means that dram shop liability laws are currently associated with saving an estimated 64 lives in the 45 jurisdictions that currently have the law. If the remaining 6 states adopted the dram shop law, an additional 9 lives could potentially be saved annually. Similarly, RBS training laws are associated with saving an estimated 83 lives in the 37 jurisdictions that currently have the laws. If the remaining 14 states adopted these RBS training laws, we estimate that an additional 28 lives could potentially be saved. 相似文献
63.
Ricardo Braun 《Environment, Development and Sustainability》2008,10(1):19-39
The implementation of sustainable development requires several support instruments. One of the major instruments in the Rio
Declaration to support this process has been environmental assessment that has been given considerable emphasis as to its
potential ability to help achieve more sustainable forms of development.
Regional environmental assessment (REA) has shown to be effective in supporting local sustainable development process. Selected
environmental assessment methods have been␣used to improve the REA exercise and provide reliable data for decision-making
not only to correct environmental problems due to past unsustainable social-economic developments but also help local governments
to implement Agenda 21 (AG21) plans and projects. 相似文献
64.
65.
安全文化是随着社会的繁荣、城乡的发展及科技进步,从工业文明、社会文化衍生而来。本文从国内外事故灾害频发的特点出发,探讨国内提出安全防灾文化建设的概念,并着重分析了拓展安全防灾文化建设的大思路。 相似文献
66.
中国城市综合减灾体系建设及其系统思考 总被引:3,自引:0,他引:3
从中国城市减灾现状分析入手,重点剖析城市减灾的可持续发展问题,并探讨了城市社会经济可持续发展中如何确立防灾减灾的地位.进而用系统科学思路研究城市综合减灾的体系建设问题,从一定意义上较为科学地解决了跨世纪的中国城市可持续发展的关键问题. 相似文献
67.
68.
69.
70.