全文获取类型
收费全文 | 1606篇 |
免费 | 16篇 |
国内免费 | 40篇 |
专业分类
安全科学 | 22篇 |
废物处理 | 108篇 |
环保管理 | 154篇 |
综合类 | 138篇 |
基础理论 | 289篇 |
环境理论 | 2篇 |
污染及防治 | 544篇 |
评价与监测 | 297篇 |
社会与环境 | 104篇 |
灾害及防治 | 4篇 |
出版年
2023年 | 59篇 |
2022年 | 172篇 |
2021年 | 114篇 |
2020年 | 25篇 |
2019年 | 46篇 |
2018年 | 82篇 |
2017年 | 88篇 |
2016年 | 108篇 |
2015年 | 44篇 |
2014年 | 78篇 |
2013年 | 174篇 |
2012年 | 74篇 |
2011年 | 88篇 |
2010年 | 68篇 |
2009年 | 58篇 |
2008年 | 71篇 |
2007年 | 54篇 |
2006年 | 62篇 |
2005年 | 34篇 |
2004年 | 23篇 |
2003年 | 20篇 |
2002年 | 28篇 |
2001年 | 8篇 |
2000年 | 7篇 |
1999年 | 5篇 |
1998年 | 3篇 |
1997年 | 2篇 |
1996年 | 6篇 |
1995年 | 2篇 |
1994年 | 4篇 |
1993年 | 3篇 |
1992年 | 3篇 |
1989年 | 2篇 |
1988年 | 3篇 |
1985年 | 2篇 |
1984年 | 2篇 |
1983年 | 4篇 |
1982年 | 5篇 |
1979年 | 2篇 |
1969年 | 1篇 |
1966年 | 1篇 |
1965年 | 2篇 |
1964年 | 2篇 |
1962年 | 2篇 |
1961年 | 4篇 |
1958年 | 3篇 |
1957年 | 3篇 |
1956年 | 2篇 |
1955年 | 4篇 |
1953年 | 1篇 |
排序方式: 共有1662条查询结果,搜索用时 31 毫秒
971.
Sekaran G Ramani K Ganesh Kumar A Ravindran B John Kennedy L Gnanamani A 《Journal of environmental management》2007,84(2):123-133
Domestic wastewater contains a considerable amount of pathogenic organisms besides non-biodegradable organics. The conventional technologies followed for the treatment of domestic wastewater are less efficient in removing pathogenic organisms despite substantial removal of dissolved organics. The focal theme of the present investigation was to use a chemo-autotrophic activated carbon oxidation (CAACO) system, an immobilized cell reactor using chemoautotrophs (Bacillus sp.) for the treatment of domestic wastewater. The oxidation of organics and Escherichia coli in wastewater is controlled by the parameters space time, O(2)/COD, bed height and cod loading. The scheme comprised of anaerobic treatment, sand filtration and CAACO treatment removed BOD. COD, Total organic carbon (TOC), dissolved protein, total Kjeldhal nitrogen (TKN) and bacterial count (most probable number (MPN)) by 81%, 92%, 84%, 94%, 93% and 99.9997%, respectively. The low concentration of E. coli in the CAACO-treated wastewater was completely eliminated through UV irradiation in 3 min at 254 nm. 相似文献
972.
Kumar Pawan Mahajan Ambrish Kumar Kumar Anil 《Environmental science and pollution research international》2020,27(9):9027-9027
Environmental Science and Pollution Research - The correct presentation of Eq. 10 is shown in this paper. 相似文献
973.
Environmental Chemistry Letters - Pillared interlayered clays have interesting properties such as high surface area, pore volume and extended pore size, high thermal stability, strong surface... 相似文献
974.
Vuggili Sai Bhargava Kadiya Kaushal Gaur Umesh Kumar Sharma Manu 《Environmental science and pollution research international》2021,28(34):46377-46389
Environmental Science and Pollution Research - The synthesis of graphitic carbon nitride/cadmium sulfide core-shell nanofibers has been studied for the improved photodegradation of methylene blue... 相似文献
975.
Kadiya Kaushal Vuggili Sai Bhargava Gaur Umesh Kumar Sharma Manu 《Environmental science and pollution research international》2021,28(34):46390-46403
Environmental Science and Pollution Research - The industrialization, growing population, and human activities (e.g., liquid waste of households, industrial units, and agricultural lands) are the... 相似文献
976.
977.
978.
Kartick Chandra Pal Naba Kumar Mondal Soumendranath Chatterjee Tuhin Subhra Ghosh Jayanta Kumar Datta 《Environmental monitoring and assessment》2014,186(2):699-709
A new Gram-positive, nonpigmented, rod-shaped fluoride-tolerant bacterial strain, NM25, was isolated from waterlogged muddy field soil collected from the fluoride endemic area of Rampurhat II block (average fluoride in water, 4.7 mg/l, and in soil, 1.5 mg/kg) in Birbhum District, West Bengal, India. The study was undertaken to characterize the fluoride-tolerant bacterial isolate, to determine its role in bioaccumulation of fluoride, and to analyze the water and soil quality of the bacterial environment. The isolate was positive for catalase, lipase, urease, protease, oxidase, and H2S production, but negative for indole production, nitrate reduction, and Vogues–Proskauer test. The organisms were sensitive to recommended doses of ofloxacin, kanamycin, rifampicin, levofloxacin, vancomycin, gatifloxacin, gentamicin, doxycycline, streptomycin, and nalidixic acid but resistant to ampicillin. Based on the phenotypic characteristics, 16S rRNA gene sequence, and phylogenetic analysis, the bacterial isolate NM25 was identified as Bacillus flexus. The G+C content of the 16S rDNA was 53.14 mol%. This strain tolerated up to 20 % (w/v) NaCl in nutrient agar medium and was grown at the pH range 4–12. It reduced fluoride concentration up to 67.45 % and tolerated more than 1,500 ppm of fluoride in brain–heart infusion agar medium. 相似文献
979.
980.