全文获取类型
收费全文 | 313篇 |
免费 | 0篇 |
国内免费 | 6篇 |
专业分类
安全科学 | 14篇 |
废物处理 | 25篇 |
环保管理 | 24篇 |
综合类 | 33篇 |
基础理论 | 59篇 |
环境理论 | 1篇 |
污染及防治 | 111篇 |
评价与监测 | 37篇 |
社会与环境 | 15篇 |
出版年
2023年 | 17篇 |
2022年 | 31篇 |
2021年 | 23篇 |
2020年 | 5篇 |
2019年 | 5篇 |
2018年 | 10篇 |
2017年 | 10篇 |
2016年 | 9篇 |
2015年 | 4篇 |
2014年 | 19篇 |
2013年 | 40篇 |
2012年 | 12篇 |
2011年 | 18篇 |
2010年 | 6篇 |
2009年 | 13篇 |
2008年 | 10篇 |
2007年 | 13篇 |
2006年 | 6篇 |
2005年 | 12篇 |
2004年 | 9篇 |
2003年 | 6篇 |
2002年 | 3篇 |
2001年 | 4篇 |
2000年 | 4篇 |
1999年 | 1篇 |
1997年 | 1篇 |
1996年 | 3篇 |
1995年 | 1篇 |
1994年 | 2篇 |
1993年 | 2篇 |
1990年 | 1篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1979年 | 3篇 |
1975年 | 1篇 |
1965年 | 2篇 |
1964年 | 1篇 |
1963年 | 3篇 |
1962年 | 1篇 |
1961年 | 1篇 |
1959年 | 1篇 |
1958年 | 1篇 |
1955年 | 2篇 |
1929年 | 1篇 |
排序方式: 共有319条查询结果,搜索用时 15 毫秒
151.
Banerjee Aparna Das Debasis Andler Rodrigo Bandopadhyay Rajib 《Journal of Polymers and the Environment》2021,29(8):2701-2709
Journal of Polymers and the Environment - Nowadays when control of environmental toxicity is a matter of concern, the focus of the researchers is to find an eco-friendly process. Considering the... 相似文献
152.
153.
154.
R.K. Gangopadhyay S.K. Das M. Mukherjee 《Journal of Loss Prevention in the Process Industries》2005,18(4-6):526-530
This paper deals with the accidental release of chlorine from bonnet of a valve in a bullet installed in a chloro-alkali industry, and the probable causes of the accident and the ensuing sequence of events. Emergency procedures are also discussed. Finally, in the conclusions reached at some useful recommendations, which has been drawn for industrial facilities handling chlorine. 相似文献
155.
156.
Arsenic concentrations in rice, vegetables, and fish in Bangladesh: a preliminary study 总被引:12,自引:0,他引:12
Das HK Mitra AK Sengupta PK Hossain A Islam F Rabbani GH 《Environment international》2004,30(3):383-387
Arsenic contaminating groundwater in Bangladesh is one of the largest environmental health hazards in the world. Because of the potential risk to human health through consumption of agricultural produce grown in fields irrigated with arsenic contaminated water, we have determined the level of contamination in 100 samples of crop, vegetables and fresh water fish collected from three different regions in Bangladesh. Arsenic concentrations were determined by hydride generation atomic absorption spectrophotometry. All 11 samples of water and 18 samples of soil exceeded the expected limits of arsenic. No samples of rice grain (Oryza sativa L.) had arsenic concentrations more than the recommended limit of 1.0 mg/kg. However, rice plants, especially the roots had a significantly higher concentration of arsenic (2.4 mg/kg) compared to stem (0.73 mg/kg) and rice grains (0.14 mg/kg). Arsenic contents of vegetables varied; those exceeding the food safety limits included Kachu sak (Colocasia antiquorum) (0.09-3.99 mg/kg, n=9), potatoes (Solanum tuberisum) (0.07-1.36 mg/kg, n=5), and Kalmi sak (Ipomoea reptoms) (0.1-1.53 mg/kg, n=6). Lata fish (Ophicephalus punctatus) did not contain unacceptable levels of arsenic. These results indicate that arsenic contaminates some food items in Bangladesh. Further studies with larger samples are needed to demonstrate the extent of arsenic contamination of food in Bangladesh. 相似文献
157.
A systematic effort was made to assess the emission of methane from paddy fields using closed chamber technique. Methane emission measurements were performed over a year during the Kharif (wet season), Rabi (dry season), and fallow periods. Various soil parameters like redox potential, organic carbon and ferrous ion were determined to evaluate their control on methane emissions. Diurnal measurement of the flux showed a minimum (0.44?mg?m?2?h?1) in the morning (8?a.m.), which increased gradually to a value of 1.16?mg?m?2?h?1 till the evening due to the rise in soil temperature. The seasonally integrated flux (E SIF) for CH4 was calculated. The E SIF for methane during Kharif and Rabi crops were found to be 5.97?g?m?2 and 2.59?g?m?2, respectively. It was observed that the methane flux was maximum during flowering and fertilizer application stages for both paddy cropping seasons. The redox potential was low and the ferrous ion was higher during flowering and tiller stages. The methane emission was higher at 200?mV redox potential values. Based on the emission data obtained from the cropping and fallow period measurements, an annually integrated flux (E AIF) was calculated for methane to make a budget estimate of methane emission from rice cultivated under rain fed drought prone water regime. 相似文献
158.
An accident leading to bursting of a compressed natural gas (CNG) cylinder fitted to a passenger bus in India resulted one person died and four persons injured. This paper presents the incident, the human factor involved, safety issues and lesson learned. 相似文献
159.
Proximity to forests drives bird conservation value of coffee plantations: implications for certification 总被引:3,自引:0,他引:3
Mandyam Osuri Anand Jagdish Krishnaswamy Arundhati Das 《Ecological applications》2008,18(7):1754-1763
Widespread loss of primary habitat in the tropics has led to increased interest in production landscapes for biodiversity conservation. In the Western Ghats biodiversity hotspot in India, shade coffee plantations are located in close proximity to sites of high conservation value: protected and unprotected forests. Coffee is grown here under a tree canopy that may be dominated by native tree species or by nonnative species, particularly silver oak (Grevillea robusta). We investigated the influence of properties at the local scale and the landscape scale in determining bird communities in coffee plantations, with particular emphasis on species of conservation priority. We used systematic point counts in 11 coffee plantation sites and analyzed data in a randomized linear modeling framework that addressed spatial autocorrelation. Greater proportion of silver oak at the local scale and distance to contiguous forests at the landscape scale were implicated as factors most strongly driving declines in bird species richness and abundance, while increased basal area of native tree species, a local-scale variable, was frequently related to increased bird species richness and abundance. The influence of local-scale variables increased at greater distances from the forest. Distance to forests emerged as the strongest predictor of declines in restricted-range species, with 92% reduction in the abundance of two commonly encountered restricted-range species (Pompadour Green Pigeon and Yellow-browed Bulbul) and a 43% reduction in richness of bird species restricted to Indian hill forests within 8 km of forests. Increase in proportion of silver oak from 33% to 55% was associated with 91% reduction in the abundance of one commonly encountered restricted-range species (Crimson-fronted Barbet). One conservation strategy is providing incentives to grow coffee in a biodiversity-friendly manner. One implication of our study is that plantations located at varying distances to the forest cannot be compared fairly for biodiversity friendliness by existing certification methodology. Another is that conservation of existing forests at the landscape scale is essential for maintaining higher biodiversity in coffee plantations. Incentive schemes that promote conservation of remnant forests at the landscape scale and biodiversity-friendly practices locally and that relate to coffee communities as a whole rather than individual planters are likely to be more effective. 相似文献
160.
Ahmad Azhan Priyadarshini Monali Raj Rishabh Das Sovik Ghangrekar Makarand Madhao 《Environmental science and pollution research international》2023,30(10):25427-25451
Environmental Science and Pollution Research - The discharge of emerging pollutants, such as beta-blockers (BB), has been recognized as one of the major threats to the environment due to the... 相似文献