全文获取类型
收费全文 | 71篇 |
免费 | 1篇 |
国内免费 | 4篇 |
专业分类
安全科学 | 21篇 |
废物处理 | 2篇 |
环保管理 | 5篇 |
综合类 | 28篇 |
基础理论 | 5篇 |
污染及防治 | 9篇 |
评价与监测 | 4篇 |
灾害及防治 | 2篇 |
出版年
2024年 | 1篇 |
2023年 | 1篇 |
2020年 | 2篇 |
2019年 | 1篇 |
2017年 | 1篇 |
2016年 | 3篇 |
2015年 | 2篇 |
2014年 | 3篇 |
2013年 | 4篇 |
2012年 | 5篇 |
2011年 | 3篇 |
2010年 | 2篇 |
2009年 | 6篇 |
2008年 | 6篇 |
2007年 | 3篇 |
2006年 | 5篇 |
2005年 | 5篇 |
2004年 | 1篇 |
2003年 | 3篇 |
2002年 | 2篇 |
2001年 | 4篇 |
2000年 | 1篇 |
1999年 | 5篇 |
1998年 | 3篇 |
1996年 | 1篇 |
1994年 | 2篇 |
1992年 | 1篇 |
排序方式: 共有76条查询结果,搜索用时 31 毫秒
31.
控制船舶压载水传播外来生物的立法及相关问题的探讨 总被引:2,自引:1,他引:2
控制船舶压载水传播外来生物是目前国际海事组织立法热点之一。外来生物作为船舶污染物与以往认定的船舶污染物无论从性质还是控制方法都有很大的不同,这给立法和管理都提出了新问题。文中从这一立法的现状,发展趋势及相关的若干问题展开讨论。 相似文献
32.
33.
34.
破乳剂处理奥里油船舶压载水的试验 总被引:4,自引:0,他引:4
采用10种破乳剂对奥里油船舶压载水的破乳效果进行了比较,结果表明,用SH-CN破乳剂处理奥里油船舶压载水,处理效果较好。 相似文献
35.
Pathak H Bhatia A Prasad S Singh S Kumar S Jain MC Kumar U 《Environmental monitoring and assessment》2002,77(2):163-178
Nitrous oxide (N2O) accounts for 5%of the total enhanced greenhouse effect and responsiblefor the destruction of the stratospheric ozone. The rice-wheat cropping system occupying 26 million ha ofproductive land in Asia could be a major source ofN2O as most of the fertilizer N in this region isconsumed by this system. Emission of N2O asinfluenced by application of urea, urea plus farm yardmanure (FYM), and urea plus dicyandiamide (DCD), anitrification inhibitor, was studied in rice-wheatsystems of Indo-Gangetic plains of India. Total emissionof N2O-N from the rice-wheat systems varied between654 g ha-1 in unfertilized plots and 1570 g ha-1 in urea fertilized plots. Application of FYM and DCDreduced emission of N2O-N in rice. The magnitude ofreduction was higher with DCD. In wheat also N2O-Nemission was reduced by DCD. FYM applied in rice had noresidual effect on N2O-N emission in wheat. In riceintermittent wetting and drying condition of soilresulted in higher N2O-N emission than that ofsaturated soil condition. Treatments with 5 irrigationsgave higher emissions in wheat than those with 3irrigations. In rice-wheat system, typical of a farmer'sfield in Indo-Gangetic plains, where 240 kg N isgenerally applied through urea, N2O-N emission is1570 g ha-1 (0.38% of applied N) and application ofFYM and DCD reduced it to 1415 and 1096 g ha-1,respectively. 相似文献
36.
张春晖 《铁路节能环保与安全卫生》2019,(2):21-24
弃渣场作为铁路建设项目水土流失最为严重的部分,其防护应提到首要位置。针对低山丘陵区铁路建设涉及的凹地型、坡地型、沟道型弃渣场,从弃渣场选址原则、不同类型的弃渣场比较、防护措施设计进行分析和阐述,构建完整的水土流失防治体系,为同类型铁路建设项目弃渣场防护措施设计提供参考。 相似文献
37.
Ship breaking or recycling in Bangladesh has been a catalyst for the economy by supporting the steel, shipbuilding, furniture, building construction, machinery and electrical industries since the 1980s. Although it has generated huge employment and provided 80–90% of the total steel consumption in the country, it has faced a host of challenges due to a number of negative environmental and social impacts that hinder the sustainable development of this blooming sector. The objective of this paper is to focus on how ship-breaking activities in Bangladesh affect the adjacent environment and the health and safety of workers, as well as management’s approach to the sustainability of the industry, by conducting a review of the available scientific literature. We found that grave environmental pollution, such as physiochemical properties, heavy metals, polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyl compounds (PCBs), organotins, oil and grease pollution, asbestos and other atmospheric pollutants, and its impact on marine ecosystems, biodiversity, forestry, fisheries and human health are the main obstacles for the development of a sustainable ship-breaking industry. In addition, labour safety and occupational health problems, social unrest and conflicts have resulted from the development of the ship-breaking industry in Bangladesh. Inappropriate management practices and inadequate plans regarding ship-breaking activities and processes are the main reasons for these challenges. Effective management measures to mitigate the adverse environmental impact of the ship-breaking industry and to improve the health and safety of workers have now become an urgent requirement. 相似文献
38.
小型油水分离器的设计及试验 总被引:2,自引:0,他引:2
简要介绍了CYF-0.1/CYF-0.05型油水分离器的基本原理、主要参数、设计计算及台架试验情况。 相似文献
39.
Background, Aims and Scope When joining the European Union on 1st May 2004, Estonia had to conform its legislation to the European Union legislation.
In relation with that, also the treatment requirements on end-of-life vehicles proceeding from Directive 2000/53/EC of the
European Parliament and of the Council of 18 September 2000 were established in Estonia for the first time. Since this area
was not regulated with law beforehand, there was not any information available about it. The aim of the current survey was
to ascertain the condition of scrap yards in mid 2004. In addition to that, also to identify the number of scrap yards operating
in Estonia, to classify these by the number of dismantled vehicles and the potential environmental hazard, and to map the
locations of car dismantling companies and evaluate their compliance with the valid requirements.
Methods The companies that have been registered in the Commercial Registry under the activity code 503090-end-of-life vehicle dismantling
were visited and visually reviewed. During the visits, the compliance of scrap yards with the existing requirements was evaluated
and it was also attempted to identify how environmentally sound the dismantling technology of every scrap yard owner is.
Results and Discussion Altogether, 63 scrap yards operated in Estonia by mid 2004. Twelve of them dismantled more than 100 vehicles, 13 of them
51-99 vehicles and 38 up to 50 vehicles a year. The total annual market capacity on dismantling of vehicles in Estonia is
considered to be approx. 10,000 units. There are very few companies dealing only with car dismantling as the main business.
Most scrap-yard owners also offer side services, e.g. haulage, car repair and maintenance. The dismantlers are interested
in the selling of second-hand spare parts and scrap metal. Only one company out of 63 complied with all the requirements enacted
by the relevant decision of the Estonian Minister of Environment. The rest of the scrap yards did not meet the requirements
on the site on storage and treatment nor did they have the hazardous waste handling licence or the waste permit. Of the requirements
established for the site for storage of end-of-life vehicles, 97% of the scrap yards were surrounded with a fence, 67% had
a 24-hour guard, 45% had covered the areas with waterproof cover, but only 3% had an oil trap. Sites for treatment were in
a somewhat better condition, these were mostly situated inside the buildings, where floors were covered with waterproof covers.
Most of the dismantlers collected the waste oil and waste fluids into separate vessels, but there were a number of dismantlers
who did not know of existence of polychlorinated biphenyls (PCB) in car air conditioning systems and the availability of mercury
in sensors belonging in passenger safety systems. Proceeding from the general condition of the scrap yard, the rest of 62
scarp yards were distributed between two empirical parameters - 'rather environmentally hazardous' or 'rather not environmentally
hazardous'. As a matter of fact, 17% of scrap yards turned out 'rather environmentally hazardous'.
Conclusion Out of the scrap yards operating in Estonia, only one is compliant with the requirements set up by Directive 2000/53/EC.
Another 62 appeared during the review to be sites of potential environmental pollution. In order to comply with environmental
requirements and get the hazardous waste treatment license, the scrap yard owners have to invest into state-of-the-art dismantling
and environment protection equipment. The main obstacle to reach the environmentally sound scrap-yard is the high investment
cost and the black market for spare parts.
Recommendation and Outlook As the correction of the market in end-of-life vehicle treatment started after the adoption of Directive 2000/53/EC, the
environmental authorities have to look after the ongoing correction. It is because there is still a demand for cheap spare
parts and it makes it attractive to dismantle the vehicles out of scrap-yards by licensees. 相似文献