全文获取类型
收费全文 | 896篇 |
免费 | 7篇 |
国内免费 | 109篇 |
专业分类
安全科学 | 50篇 |
废物处理 | 23篇 |
环保管理 | 177篇 |
综合类 | 325篇 |
基础理论 | 167篇 |
环境理论 | 1篇 |
污染及防治 | 183篇 |
评价与监测 | 48篇 |
社会与环境 | 38篇 |
出版年
2023年 | 24篇 |
2022年 | 26篇 |
2021年 | 16篇 |
2020年 | 23篇 |
2019年 | 29篇 |
2018年 | 18篇 |
2017年 | 26篇 |
2016年 | 39篇 |
2015年 | 47篇 |
2014年 | 44篇 |
2013年 | 62篇 |
2012年 | 37篇 |
2011年 | 107篇 |
2010年 | 49篇 |
2009年 | 74篇 |
2008年 | 77篇 |
2007年 | 73篇 |
2006年 | 34篇 |
2005年 | 32篇 |
2004年 | 20篇 |
2003年 | 19篇 |
2002年 | 19篇 |
2001年 | 19篇 |
2000年 | 14篇 |
1999年 | 7篇 |
1998年 | 17篇 |
1997年 | 11篇 |
1996年 | 9篇 |
1995年 | 7篇 |
1994年 | 7篇 |
1993年 | 2篇 |
1992年 | 7篇 |
1991年 | 4篇 |
1990年 | 1篇 |
1989年 | 3篇 |
1985年 | 3篇 |
1984年 | 1篇 |
1982年 | 1篇 |
1980年 | 1篇 |
1978年 | 2篇 |
1969年 | 1篇 |
排序方式: 共有1012条查询结果,搜索用时 125 毫秒
751.
Tomoyuki Imai Toshiki Matsui Yasuhiko Fujii Tasuku Nakai Suminori Tanaka 《Journal of Material Cycles and Waste Management》2001,3(2):103-109
A new iron oxide catalyst, which has a superior oxidation activity in carbon monoxide and polyethylene (PE) combustion, was
synthesized by an aqueous solution reaction. Catalytic oxidation of carbon monoxide over six kinds of hematite obtained from
the goethite was done using a microcatalytic pulse reactor, and the composition of the hematite with the highest oxidation
activity was determined. With the aim of suppressing dioxin formation on combustion, incineration tests of solid wastes in
PE refuse bags with and without the goethite were carried out using a commercial semibatch-type incinerator with a combustion
chamber of 6.2 m3. The result confirmed that the concentration of dioxins in the flue gas decreased considerably when the refuse was incinerated
in PE bags manufactured with goethite.
Received: July 24, 2000 / Accepted: October 18, 2000 相似文献
752.
753.
Ke Sun Bo Gao Guixiang Zhang Baoshan Xing 《Environmental pollution (Barking, Essex : 1987)》2010,158(12):3520-3526
Atrazine and phenanthrene (Phen) sorption by nonhydrolyzable carbon (NHC), black carbon (BC), humic acid (HA) and whole sediment and soil samples was examined. Atrazine sorption isotherms were nearly linear. The single-point organic carbon (OC)-normalized distribution coefficients (KOC) of atrazine for the isolated HA1, NHC1 and BC1 from sediment 1 (ST1) were 36, 550, and 1470 times greater than that of ST1, respectively, indicating the importance of sediment organic matter, particularly the condensed fractions (NHC and BC). Similar sorption capacity of atrazine and Phen by NHC but different isotherm nonlinearity indicated different sorption domains due to their different structure and hydrophobicity. The positive relationship between (O + N)/C ratios of NHC and atrazine log KOC at low concentration suggests H-bonding interactions. This study shows that sediment is probably a less effective sorbent for atrazine than Phen, implying that atrazine applied in sediments or soils may be likely to leach into groundwater. 相似文献
754.
Elodie Jeandel Anne Battani Philippe Sarda 《International Journal of Greenhouse Gas Control》2010,4(6):890-909
The deployment of CCS (carbon capture and storage) at industrial scale implies the development of effective monitoring tools. Noble gases are tracers usually proposed to track CO2. This methodology, combined with the geochemistry of carbon isotopes, has been tested on available analogues.At first, gases from natural analogues were sampled in the Colorado Plateau and in the French carbogaseous provinces, in both well-confined and leaking-sites. Second, we performed a 2-years tracing experience on an underground natural gas storage, sampling gas each month during injection and withdrawal periods.In natural analogues, the geochemical fingerprints are dependent on the containment criterion and on the geological context, giving tools to detect a leakage of deep-CO2 toward surface. This study also provides information on the origin of CO2, as well as residence time of fluids within the crust and clues on the physico-chemical processes occurring during the geological story.The study on the industrial analogue demonstrates the feasibility of using noble gases as tracers of CO2. Withdrawn gases follow geochemical trends coherent with mixing processes between injected gas end-members. Physico-chemical processes revealed by the tracing occur at transient state.These two complementary studies proved the interest of geochemical monitoring to survey the CO2 behaviour, and gave information on its use. 相似文献
755.
756.
757.
Teixeira J Sousa A Azenha M Moreira JT Fidalgo F Fernando Silva A Faria JL Silva AM 《Chemosphere》2011,85(5):744-750
In this work, the phytoremediation potential of metalaxyl, a commonly used persistent, mobile and leachy fungicide, by Solanum nigrum L. plants was studied. The study revealed that this plant species can be used as an excellent metalaxyl phytoremediation tool, thus providing a cost effective and environmentally friendly clean technology for the decontamination of sites and effluents. As it can be sowed directly in the remediation site, is able to complete its life cycle without suffering major stress. Because it accumulates high amounts of the fungicide in the aboveground tissues, enables its concentration and proper disposal by cutting off the corresponding plant part. The study also suggests that the tolerance to metalaxyl is due to a suitable antioxidant response comprising proline accumulation and guaiacol peroxidase and glutathione-S-transferase enhanced activities, that reduce oxidative damage to the plant organs. 相似文献
758.
Dalgaard T Olesen JE Petersen SO Petersen BM Jørgensen U Kristensen T Hutchings NJ Gyldenkærne S Hermansen JE 《Environmental pollution (Barking, Essex : 1987)》2011,159(11):3193-3203
Greenhouse gas (GHG) emissions from agriculture are a significant contributor to total Danish emissions. Consequently, much effort is currently given to the exploration of potential strategies to reduce agricultural emissions. This paper presents results from a study estimating agricultural GHG emissions in the form of methane, nitrous oxide and carbon dioxide (including carbon sources and sinks, and the impact of energy consumption/bioenergy production) from Danish agriculture in the years 1990–2010. An analysis of possible measures to reduce the GHG emissions indicated that a 50–70% reduction of agricultural emissions by 2050 relative to 1990 is achievable, including mitigation measures in relation to the handling of manure and fertilisers, optimization of animal feeding, cropping practices, and land use changes with more organic farming, afforestation and energy crops. In addition, the bioenergy production may be increased significantly without reducing the food production, whereby Danish agriculture could achieve a positive energy balance. 相似文献
759.
Morani A Nowak DJ Hirabayashi S Calfapietra C 《Environmental pollution (Barking, Essex : 1987)》2011,159(5):1040-1047
Highest priority zones for tree planting within New York City were selected by using a planting priority index developed combining three main indicators: pollution concentration, population density and low canopy cover. This new tree population was projected through time to estimate potential air quality and carbon benefits. Those trees will likely remove more than 10 000 tons of air pollutants and a maximum of 1500 tons of carbon over the next 100 years given a 4% annual mortality rate. Cumulative carbon storage will be reduced through time as carbon loss through tree mortality outweighs carbon accumulation through tree growth. Model projections are strongly affected by mortality rate whose uncertainties limit estimations accuracy. Increasing mortality rate from 4 to 8% per year produce a significant decrease in the total pollution removal over a 100 year period from 11 000 tons to 3000 tons. 相似文献
760.
Schwyzer I Kaegi R Sigg L Magrez A Nowack B 《Environmental pollution (Barking, Essex : 1987)》2011,159(6):1641-1648
The colloidal stability of dry and suspended carbon nanotubes (CNTs) in the presence of amphiphilic compounds (i.e. natural organic matter or surfactants) at environmentally realistic concentrations was investigated over several days. The suspensions were analyzed for CNT concentration (UV-vis spectroscopy), particle size (nanoparticle tracking analysis), and CNT length and dispersion quality (TEM). When added in dry form, around 1% of the added CNTs remained suspended. Pre-dispersion in organic solvent or anionic detergent stabilized up to 65% of the added CNTs after 20 days of mild shaking and 5 days of settling. The initial state of the CNTs (dry vs. suspended) and the medium composition hence are critical determinants for the partitioning of CNTs between sediment and the water column. TEM analysis revealed that single suspended CNTs were present in all suspensions and that shaking and settling resulted in a fractionation of the CNTs with shorter CNTs remaining predominantly in suspension. 相似文献