全文获取类型
收费全文 | 496篇 |
免费 | 8篇 |
国内免费 | 2篇 |
专业分类
安全科学 | 27篇 |
废物处理 | 13篇 |
环保管理 | 90篇 |
综合类 | 92篇 |
基础理论 | 122篇 |
环境理论 | 2篇 |
污染及防治 | 103篇 |
评价与监测 | 39篇 |
社会与环境 | 13篇 |
灾害及防治 | 5篇 |
出版年
2023年 | 5篇 |
2022年 | 4篇 |
2021年 | 5篇 |
2020年 | 9篇 |
2019年 | 10篇 |
2018年 | 17篇 |
2017年 | 12篇 |
2016年 | 15篇 |
2015年 | 14篇 |
2014年 | 20篇 |
2013年 | 32篇 |
2012年 | 21篇 |
2011年 | 32篇 |
2010年 | 28篇 |
2009年 | 30篇 |
2008年 | 29篇 |
2007年 | 28篇 |
2006年 | 28篇 |
2005年 | 23篇 |
2004年 | 18篇 |
2003年 | 13篇 |
2002年 | 15篇 |
2001年 | 11篇 |
2000年 | 12篇 |
1999年 | 8篇 |
1998年 | 14篇 |
1997年 | 3篇 |
1996年 | 7篇 |
1995年 | 7篇 |
1994年 | 3篇 |
1993年 | 2篇 |
1992年 | 5篇 |
1991年 | 6篇 |
1990年 | 3篇 |
1988年 | 3篇 |
1987年 | 4篇 |
1986年 | 2篇 |
1984年 | 3篇 |
1983年 | 2篇 |
1982年 | 1篇 |
1958年 | 1篇 |
1943年 | 1篇 |
排序方式: 共有506条查询结果,搜索用时 8 毫秒
121.
Kocbek Eva Garcia Hector A. Hooijmans Christine M. Mijatović Ivan Al-Addous Mohammad Dalala Zakariya Brdjanovic Damir 《Environmental science and pollution research international》2022,29(28):42016-42036
Environmental Science and Pollution Research - The provision of effective sanitation strategies has a significant impact on public health. However, the treatment of septic sludge still presents... 相似文献
122.
Addressing challenges for future strategic‐level emergency management: reframing,networking, and capacity‐building 下载免费PDF全文
The mounting frequency and intensity of natural hazards, alongside growing interdependencies between social‐technical and ecological systems, are placing increased pressure on emergency management. This is particularly true at the strategic level of emergency management, which involves planning for and managing non‐routine, high‐consequence events. Drawing on the literature, a survey, and interviews and workshops with Australia's senior emergency managers, this paper presents an analysis of five core challenges that these pressures are creating for strategic‐level emergency management. It argues that emphasising ‘emergency management’ as a primary adaptation strategy is a retrograde step that ignores the importance of addressing socio‐political drivers of vulnerabilities. Three key suggestions are presented that could assist the country's strategic‐level emergency management in tackling these challenges: (i) reframe emergency management as a component of disaster risk reduction rather than them being one and the same; (ii) adopt a network governance approach; and (iii) further develop the capacities of strategic‐level emergency managers. 相似文献
123.
Solid phase microextraction (SPME) as an effective means to isolate degradation products in polymers 总被引:2,自引:0,他引:2
Minna Hakkarainen Ann- Christine Albertsson Sigbritt Karlsson 《Journal of Polymers and the Environment》1997,5(2):67-73
A new sample preparation technique, solid phase microextraction (SPME), was compared with direct headspace-GC-MS with respect
to the type and amount of identified compounds. Three types of LDPE films containing photosensitising additives according
to the Scott-Gilead patents and pure LDPE were used as model substances. The polyethylene films were thermally aged at 80‡C
after the induction period was surpassed by subjecting the materials to 100 h of UV radiation. The new SPME method was developed
using nonpolar poly(dimethylsiloxane) and polar carbowax fibers to extract the low molecular weight products formed in the
polyethylene films during aging. Many more products were identified after SPME followed by GC-MS than after direct headspace-GC-MS
of the samples. The SPME method allowed the identification of homologous series of carboxylic acids, ketones, and furanones,
while direct headspace-GC-MS identified only a few carboxylic acids (C1-C6) and small amounts of some ketones and furanones.
In general, SPME was more effective in extracting less volatile products, and in particular, the polar carbowax fiber identified
also C7-C12 carboxylic acids and 4-oxopentanoic acid. By SEC and FTIR we confirmed that the number and amount of former degradation
products correlated well with the decrease in molecular weights and the amount of formed carbonyl compounds. 相似文献
124.
125.
126.
127.
Blasing T. J. Broniak Christine Marland Gregg 《Mitigation and Adaptation Strategies for Global Change》2005,10(4):659-674
Time series of fossil fuel carbon emissions from 1960–2000 for each of the U.S. states and the District of Columbia are presented
and discussed. Comparison of the nationally summarized results with other national datasets shows generally good agreement,
usually within 2%, and gives insight into the quality of all the data series. Our extension of the state-by-state emissions
estimates back to 1960 reveals patterns of change that are coherent across states and can be related to historic events such
as energy crises and federal legislation. Most notable is the changing pattern of coal usage, as coal-producing states produce
increasingly more energy (mostly for electricity) for other states so that per capita CO2 emissions diverge for states that import as opposed to those that export electricity. The decline in carbon emissions from
petroleum products following the 1970s is also evident. Per capita emissions range over an order of magnitude for the different
states. The data suggest that differences in per capita emissions arise from differences in many technological, physical,
resource, social, and economic factors. The data presented here and the few correlations briefly noted pose a challenge for
trying to use per capita emissions as a measure of equity or to provide mitigation targets. 相似文献
128.
Christine A. Matthews 《Journal of the American Water Resources Association》1991,27(5):841-847
ABSTRACT: Southern California, now in its fifth consecutive year of drought, has always relied heavily on imported water from the Owens Valley, the State Water Project, and the Colorado River. For various reasons, these sources are now decreasing and water suppliers are being forced to look for new sources. One possible alternative is to store water obtained during peak supply periods for use during dry periods in ground water storage basins. The Santa Ana River Basin in Orange County has already been developed, and is being used to provide water to 25 cities in Orange County. The San Juan Basin, also in Orange County, is being studied as a possible future storage basin. This paper examines some of the positive and negative aspects of developing and using ground water storage basins in Southern California. 相似文献
129.
130.
Hansen DA Edgerton E Hartsell B Jansen J Burge H Koutrakis P Rogers C Suh H Chow J Zielinska B McMurry P Mulholland J Russell A Rasmussen R 《Journal of the Air & Waste Management Association (1995)》2006,56(10):1445-1458
Measurements of pollutant gases, airborne particulate matter mass and composition, and meteorology have been made at a core site near downtown Atlanta, GA, since August 1998 in support of the Aerosol Research and Inhalation Epidemiology Study (ARIES). This site is one of eight in the Southeastern Aerosol Research and Characterization network. The measurement objective is to provide a long-term, multivariate dataset suitable for investigating statistical associations of respiratory and cardiovascular disease with airborne particulate matter composition, meteorology, and copollutant gases through epidemiologic modeling. Measurements are expected to continue through 2010. Ancillary multiyear measurements at additional sites in the Atlanta metropolitan area and in short-term exposure assessments have been used to estimate the exposure/measurement error associated with using data from a central site to approximate human exposures for the entire area. To date, 13-, 25-, and 53-month air quality datasets have been used in epidemiologic analyses. 相似文献