全文获取类型
收费全文 | 417篇 |
免费 | 7篇 |
国内免费 | 6篇 |
专业分类
安全科学 | 9篇 |
废物处理 | 25篇 |
环保管理 | 50篇 |
综合类 | 53篇 |
基础理论 | 72篇 |
污染及防治 | 150篇 |
评价与监测 | 40篇 |
社会与环境 | 29篇 |
灾害及防治 | 2篇 |
出版年
2023年 | 4篇 |
2022年 | 19篇 |
2021年 | 28篇 |
2020年 | 9篇 |
2019年 | 6篇 |
2018年 | 21篇 |
2017年 | 19篇 |
2016年 | 18篇 |
2015年 | 12篇 |
2014年 | 25篇 |
2013年 | 35篇 |
2012年 | 16篇 |
2011年 | 32篇 |
2010年 | 18篇 |
2009年 | 18篇 |
2008年 | 25篇 |
2007年 | 18篇 |
2006年 | 18篇 |
2005年 | 13篇 |
2004年 | 16篇 |
2003年 | 15篇 |
2002年 | 8篇 |
2001年 | 10篇 |
2000年 | 2篇 |
1999年 | 1篇 |
1997年 | 3篇 |
1996年 | 2篇 |
1995年 | 1篇 |
1994年 | 3篇 |
1993年 | 3篇 |
1992年 | 1篇 |
1991年 | 3篇 |
1990年 | 2篇 |
1989年 | 2篇 |
1987年 | 2篇 |
1983年 | 1篇 |
1980年 | 1篇 |
排序方式: 共有430条查询结果,搜索用时 15 毫秒
81.
Murshed Muntasir Rashid Seemran Ulucak Recep Dagar Vishal Rehman Abdul Alvarado Rafael Nathaniel Solomon Prince 《Environmental science and pollution research international》2022,29(12):16939-16958
Environmental Science and Pollution Research - The energy sector of Argentina is predominantly reliant on fossil fuels. Consequently, such fossil fuel dependency within the nation’s power... 相似文献
82.
83.
Salerno Jonathan Chapman Colin A. Diem Jeremy E. Dowhaniuk Nicholas Goldman Abraham MacKenzie Catrina A. Omeja Patrick Aria Palace Michael W. Reyna-Hurtado Rafael Ryan Sadie J. Hartter Joel 《Regional Environmental Change》2018,18(3):913-928
Regional Environmental Change - Landscapes are changing rapidly in regions where rural people live adjacent to protected parks and reserves. This is the case in highland East Africa, where many... 相似文献
84.
Wendlandt Amézaga Teodoro Rafael Camarena José Luis Celaya Figueroa Roberto Garduño Realivazquez Karla Alejandra 《Environment, Development and Sustainability》2022,24(1):765-788
Environment, Development and Sustainability - Current trends such as imminent overpopulation and the take-make-waste economic model are largely responsible for the planet’s dire situation.... 相似文献
85.
The Role of Fungal Symbioses in the Adaptation of Plants to High Stress Environments 总被引:1,自引:0,他引:1
Russell J. Rodriguez Regina S. Redman Joan M. Henson 《Mitigation and Adaptation Strategies for Global Change》2004,9(3):261-272
All plants studied in natural ecosystemsare symbiotic with fungi that either resideentirely (endophytes) or partially(mycorrhizae) within plants. Thesesymbioses appear to adapt to biotic andabiotic stresses and may be responsible forthe survival of both plant hosts and fungalsymbionts in high stress habitats. Here wedescribe the role of symbiotic fungi inplant stress tolerance and present astrategy based on adaptive symbiosis topotentially mitigate the impacts of globalchange on plant communities. 相似文献
86.
Prenatal screening was carried out in Havana City, Cuba, as part of a National Medical Genetics Programme, in order to detect elevated alpha-fetoprotein concentration in maternal serum (MS-AFP). A total of 97 900 pregnant women between 15 and 19 weeks of pregnancy were tested from 1982 to 1985. A double-antibody-sandwich technique was used. 173 malformed fetuses were detected. Confirmation was by ultrasonography, elevated AFP values in a second serum sample and in amniotic fluid and acetylcholinesterase. No termination of a normal pregnancy occurred. The screening of all pregnancies is easy, economical and useful for detecting not only fetuses suffering from open Neural Tube Defects (NTDs) and other severe disorders but also pregnancies at risk of further complications. 相似文献
87.
Moreno Rodriguez MJ Cala Rivero V Jiménez Ballesta R 《Environmental geochemistry and health》2005,27(5-6):513-519
Selenium was determined from 25 topsoils and 25 plants in the semi-arid Central Spain where large extents of soils are developed
on evaporitic materials. Some species of vegetation associated with them are of the genera Astragalus, Salsola, Mercurialis, Phlomis, Thymus and Atriplex. Total selenium in soils was determined and its bioavailability assessed by chemical sequential fractionation. Se content
in soils was adequate (in the range 0.17–0.39 mg kg−1) or large (in the range 0.50–4.38 mg kg−1) and appeared in highly and/or potentially available forms. Several plant species showed high Se levels (in the range 5–14.3 mg kg−1), which can be a potential risk of toxicity to animals. Data obtained from the study area can be used as a guide to the range
of values in soils and plants of the European Mediterranean area that are relatively unpolluted from industrial sources, allowing
comparison with more polluted areas. 相似文献
88.
Oxidative co-treatment using hydrogen peroxide with anaerobic digestion of excess municipal sludge. 总被引:1,自引:0,他引:1
Jesus A Cacho Rivero Narain Madhavan Makram T Suidan Philippe Ginestet Jean-Marc Audic 《Water environment research》2006,78(7):691-700
The effect of an oxidative co-treatment on anaerobic digestion of a mixture of primary and waste activated sludge was investigated. The oxidant used in this study was hydrogen peroxide (H2O2). A maximum improvement in solid destruction of 15.2% was achieved in the overall process, with a dosage of 2.0 g H2O2/g influent volatile suspended solids (VSS(influent)). All configurations operated at this dosage also showed statistically significant increases in solids removal. A statistically significant enhancement in overall solids destruction was observed for the lower oxidant dosage (0.5 H2O2/g VSS(influent)). Surprisingly, for 1.0 g H2O2/g VSS(influent), only one of the three configurations involving oxidative co-treatment showed significant increases in solids destruction. Special attention was paid to the performance of this process relative to fecal coliforms destruction. Class A biosolids were obtained for all the different hydrogen peroxide dosages used when oxidative co-treatment is combined with a two-stage anaerobic digestion process. 相似文献
89.
Martuzevicius D Grinshpun SA Reponen T Górny RL Shukla R Lockey J Hu S McDonald R Biswas P Kliucininkas L Lemasters G 《Atmospheric environment (Oxford, England : 1994)》2004,38(8):1091-1105
The PM(2.5) concentration and its elemental composition were measured in the Cincinnati metropolitan area, which is characterized by intense highway traffic. The spatial and temporal variations were investigated for various chemical elements that contributed to the PM(2.5) fraction during a 1-year-long measurement campaign (December 2001-November 2002). The ambient aerosol monitoring was performed in 11 locations around the city during nine measurement cycles. During each cycle, four Harvard-type impactors were operating in parallel in specific locations to explore various factors affecting the PM(2.5) elemental concentrations. The sampling was performed during business days, thus assuring traffic uniformity. The 24-h PM(2.5) samples were collected on Teflon and quartz filters. Teflon filters were analyzed by X-ray fluorescence (XRF) analysis while quartz filters were analyzed by thermal-optical transmittance (TOT) analysis. In addition to PM(2.5) measurements, particle size-selective sampling was performed in two cycles using micro-orifice uniform deposit impactor; the collected fractionated deposits were analyzed by XRF. It was found that PM(2.5) concentration ranged from 6.70 to 48.3 mug m(-3) and had low spatial variation (median coefficient of variation, CV=11.3%). The elemental concentrations demonstrated high spatial variation, with the median CV ranged from 38.2% for Fe to 68.7% for Ni. For traffic-related trace metals, the highest concentration was detected in the city center site, which was close to a major highway. The particle size selective measurement revealed that mass concentration of the trace metals, such as Zn, Pb, Ni, as well as that of sulfur reach their peak values in the particle size range of 0.32-1.0 mum. Meteorological parameters and traffic intensity were not found to have a significant influence on the PM(2.5) elemental concentrations. 相似文献
90.
A sequencing batch reactor was used to study the possibility of harvesting polyhydroxyalkanoate (PHA) from enhanced biological phosphorus removal (EBPR) processes without compromising treatment quality. Because, in EBPR, the highest PHA concentrations are observed after exposure of the sludge to anaerobic conditions, PHA accumulation was evaluated with collection of waste activated sludge (WAS) at the end of the anaerobic stage, in addition to the traditional removal after the aerobic stage. The system achieved good phosphorus removal, regardless of the point of WAS collection. When sludge was harvested at the end of the anaerobic stage, the PHA content of the sludge ranged from 7 to 16 mg PHA/100 mg mixed liquor volatile suspended solids. Although this level of PHA production is below levels obtained with pure cultures, the demonstrated ability to harvest PHA, while simultaneously satisfying phosphorus removal in an EBPR process, is a key initial step towards of the use of wastewater treatment plants for PHA production. 相似文献