全文获取类型
收费全文 | 4376篇 |
免费 | 311篇 |
国内免费 | 899篇 |
专业分类
安全科学 | 248篇 |
废物处理 | 608篇 |
环保管理 | 885篇 |
综合类 | 2636篇 |
基础理论 | 332篇 |
环境理论 | 2篇 |
污染及防治 | 544篇 |
评价与监测 | 215篇 |
社会与环境 | 109篇 |
灾害及防治 | 7篇 |
出版年
2024年 | 3篇 |
2023年 | 42篇 |
2022年 | 80篇 |
2021年 | 112篇 |
2020年 | 132篇 |
2019年 | 93篇 |
2018年 | 100篇 |
2017年 | 132篇 |
2016年 | 182篇 |
2015年 | 176篇 |
2014年 | 369篇 |
2013年 | 344篇 |
2012年 | 358篇 |
2011年 | 353篇 |
2010年 | 234篇 |
2009年 | 274篇 |
2008年 | 232篇 |
2007年 | 282篇 |
2006年 | 327篇 |
2005年 | 244篇 |
2004年 | 194篇 |
2003年 | 224篇 |
2002年 | 182篇 |
2001年 | 153篇 |
2000年 | 157篇 |
1999年 | 118篇 |
1998年 | 93篇 |
1997年 | 68篇 |
1996年 | 69篇 |
1995年 | 59篇 |
1994年 | 50篇 |
1993年 | 41篇 |
1992年 | 27篇 |
1991年 | 16篇 |
1990年 | 11篇 |
1989年 | 4篇 |
1988年 | 2篇 |
1987年 | 6篇 |
1986年 | 3篇 |
1984年 | 3篇 |
1983年 | 3篇 |
1982年 | 3篇 |
1981年 | 4篇 |
1980年 | 6篇 |
1979年 | 5篇 |
1977年 | 3篇 |
1976年 | 2篇 |
1973年 | 3篇 |
1971年 | 3篇 |
1970年 | 1篇 |
排序方式: 共有5586条查询结果,搜索用时 15 毫秒
121.
This paper provides non-hazardous solid waste audit procedures and bench mark audit data for golf courses (GCs). The paper also demonstrates the narrow scope of solid waste audit data, and the need to move towards a broader auditing scope such as that contained in sustainability auditing frameworks. A case study of Clear Lake Golf Course, located in southwestern Manitoba, Canada was completed. Annual waste generation rates at the GC were estimated to be 46.2 tonnes/year with 83% of this material compostable. Grass clipping material generated from the putting greens accounted for 79% of the waste stream. The GC achieved a solid waste diversion rate of 81% (waste generated not destined for landfill per total waste material generated). A future, realistic target of 97% diversion was also identified. The 7 day audit period was found to be unsuitable for estimating grass clipping generation rates. Implementation of a broader sustainability framework for future audits will harmonize many existing management functions such as solid waste auditing, waste characterizations, pollution prevention, green procurement, customer satisfaction, and the efficiency of the operations. 相似文献
122.
123.
垃圾填埋场封场工程施工安全措施 总被引:1,自引:0,他引:1
对生活垃圾填埋场封场工程施工过程中的防火防爆问题进行了探讨,并介绍了主要对应措施。 相似文献
124.
125.
现代电化学技术与环境保护 总被引:2,自引:0,他引:2
介绍了电化学技术在清洁工艺的开发、清洁产品的制备、废水与废气的处理、被污染土壤的修复和环境污染物监测方面的应用情况。电化学技术具有能量利用率高、经济实用以及污染物产生量少或污染物去除率高等特点,在环境保护领域具有广阔的应用前景。 相似文献
126.
127.
H. Ozaki K. Sharma C. Phanuwan K. Fukushi C. Polprasert 《Journal of Material Cycles and Waste Management》2003,5(1):0031-0038
This paper deals with the present scenario of hazardous waste management practices in Thailand, and gives some insights into
future prospects. Industrialization in Thailand has systematically increased the generation of hazardous waste. The total
hazardous waste generated in 2001 was 1.65 million tons. It is estimated that over 300 million kg/year of hazardous waste
is generated from nonindustrial, community sources (e.g., batteries, fluorescent lamps, cleansing chemicals, pesticides).
No special facilities are available for handling these wastes. There are neither well-established systems for separation,
storage, collection, and transportation, nor the effective enforcement of regulations related to hazardous wastes management
generated from industrial or nonindustrial sectors. Therefore, because of a lack of treatment and disposal facilities, these
wastes find their way into municipal wastewaters, public landfills, nearby dump sites, or waterways, raising serious environmental
concern. Furthermore, Thailand does not have an integrated regulatory framework regarding the monitoring and management of
hazardous materials and wastes. In addition to the absence of a national definition of hazardous wastes, limited funding has
caused significant impediments to the effective management of hazardous waste. Thus, current waste management practices in
Thailand present significant potential hazards to humans and the environment. The challenging issues of hazardous waste management
in Thailand are not only related to a scarcity of financial resources (required for treatment and disposal facilities), but
also to the fact that there has been no development of appropriate technology following the principles of waste minimization
and sustainable development. A holistic approach to achieving effective hazardous waste management that integrates the efforts
of all sectors, government, private, and community, is needed for the betterment of human health and the environment.
Received: February 26, 2001 / Accepted: October 11, 2002 相似文献
128.
129.
本文报道了利用造纸黑液回收电镀废液中铬的方法,阐明了造纸黑液中所含有还原性物质与Cr^6+的反应机理;讨论了进行反应的最佳条件以及采用这一方法对废液的治理效果。 相似文献
130.
本文介绍采用德国进口的LB9100D监测系统对80m烟囟排放的α放射性气溶胶浓度进行连续、自动监测。并与国产FJ-367,FH-463A装置进行了对比则量,两套装置的测量结果符合得较好。 相似文献