全文获取类型
收费全文 | 205篇 |
免费 | 1篇 |
国内免费 | 5篇 |
专业分类
安全科学 | 31篇 |
废物处理 | 6篇 |
环保管理 | 33篇 |
综合类 | 27篇 |
基础理论 | 52篇 |
污染及防治 | 36篇 |
评价与监测 | 13篇 |
社会与环境 | 8篇 |
灾害及防治 | 5篇 |
出版年
2023年 | 2篇 |
2022年 | 5篇 |
2019年 | 1篇 |
2018年 | 2篇 |
2017年 | 7篇 |
2016年 | 4篇 |
2015年 | 2篇 |
2014年 | 5篇 |
2013年 | 13篇 |
2012年 | 9篇 |
2011年 | 13篇 |
2010年 | 6篇 |
2009年 | 15篇 |
2008年 | 12篇 |
2007年 | 15篇 |
2006年 | 10篇 |
2005年 | 7篇 |
2004年 | 4篇 |
2003年 | 8篇 |
2002年 | 7篇 |
2001年 | 5篇 |
2000年 | 3篇 |
1999年 | 4篇 |
1998年 | 5篇 |
1997年 | 5篇 |
1996年 | 3篇 |
1995年 | 3篇 |
1994年 | 4篇 |
1993年 | 10篇 |
1992年 | 6篇 |
1991年 | 4篇 |
1989年 | 2篇 |
1988年 | 5篇 |
1987年 | 1篇 |
1986年 | 2篇 |
1983年 | 1篇 |
1979年 | 1篇 |
排序方式: 共有211条查询结果,搜索用时 15 毫秒
131.
Markus Langs Sebastien Allar Ina Kristian Anna Heitz Cynthia A. Joll 《环境科学学报(英文版)》2017,29(8):340-348
Determination of halogen-specific total organic halogen(TOX) is vital for studies of disinfection of waters containing bromide, since total organic bromine(TOBr) is likely to be more problematic than total organic chlorine. Here, we present further halogen-specific TOX method optimisation and validation, focusing on measurement of TOBr. The optimised halogen-specific TOX method was validated based on the recovery of model compounds covering different classes of disinfection by-products(haloacetic acids, haloacetonitriles,halophenols and halogenated benzenes) and the recovery of total bromine(mass balance of TOBr and bromide concentrations) during disinfection of waters containing dissolved organic matter and bromide. The validation of a halogen-specific TOX method based on the mass balance of total bromine has not previously been reported. Very good recoveries of organic halogen from all model compounds were obtained, indicating high or complete conversion of all organic halogen in the model compound solution through to halide in the absorber solution for ion chromatography analysis. The method was also successfully applied to monitor conversion of bromide to TOBr in a groundwater treatment plant. An excellent recovery(101%)of total bromine was observed from the raw water to the post-chlorination stage. Excellent recoveries of total bromine(92%–95%) were also obtained from chlorination of a synthetic water containing dissolved organic matter and bromide, demonstrating the validity of the halogen-specific TOX method for TOBr measurement. The halogen-specific TOX method is an important tool to monitor and better understand the formation of halogenated organic compounds, in particular brominated organic compounds, in drinking water systems. 相似文献
132.
拉来娜 《湖南环境生物职业技术学院学报》2005,11(2):113-117,122
有效的保护环境,法律是必不可少的工具。本文章的主要目的是调查两个经济发展不同的国家在环境保护法的主要差异方面,包括:环境法的范围;环境立法的发展;主要宗旨和法制系统的基础. 相似文献
133.
134.
135.
Cynthia Rosenzweig Ana Iglesias Günther Fischer Yuanhua Liu Walter Baethgen James W. Jones 《Environmental Modeling and Assessment》1999,4(2-3):115-132
CERES-Wheat, a dynamic process crop growth model, is specified and validated for eight sites in the major wheat-growing regions of China. Crop model results are then used to test the Mitscherlich-Baule and the quadratic functional forms for yield response to nitrogen fertilizer, irrigation water, temperature, and precipitation. The resulting functions are designed to be used in a linked biophysical-economic model of land-use and land-cover change in China. While both functions predict yield responses adequately, the Mitscherlich-Baule function is preferable to the quadratic function because its parameters are biologically and physically realistic. Variables explaining a significant proportion of simulated yield variance are nitrogen, irrigation water, and precipitation; temperature was a less significant component of yield variation within the range of observed year-to-year variability at the study sites. Crop model simulations with a generic soil with median characteristics of the eight sites compared to simulations with site-specific soils showed that agricultural soils in China have similar and, in general, low-to-moderate water-holding capacities and organic matter contents. The validated crop model is useful for simulating the range of conditions under which wheat is grown in China, and provides the means to estimate production functions when experimental field data are not available. 相似文献
136.
Cynthia J. Musante Ted B. Martonen 《Journal of the Air & Waste Management Association (1995)》2013,63(8):1426-1432
ABSTRACT An age-dependent theoretical model has been developed to predict PM dosimetry in children's lungs. Computer codes have been written that describe the dimensions of individual airways and the geometry of branching airway networks within developing lungs. Breathing parameters have also been formulated as functions of subject age. Our computer simulations suggest that particle size, age, and activity level markedly affect deposition patterns of inhaled air pollutants. For example, the predicted lung deposition fraction is 38% in an adult but is nearly twice as high (73%) in a 7-month-old for 2-um particles inhaled during heavy breathing. Tracheobronchial (TB) and pulmonary (or alveolated airways, P) deposition patterns may also be calculated using the model. Due to different clearance processes in the TB and P airways (i.e., mucociliary transport and macrophage action, respectively), the determination of compartmental dose is important for PM risk assessment analyses. Furthermore, the results of such simulations may aid in the setting of regulatory standards for air pollutants, as the data provide a scientific basis for estimating dose delivered to a designated sensitive subpopulation (children). 相似文献
137.
138.
139.
Christoffer Rappe Lars-Owe Kjeller Sten-Erik Kulp Cynthia de Wit Ingrid Hasselsten Ola Palm 《Chemosphere》1991,23(11-12)
Analyses of sludge from graphite electrodes used in the chloralkali process show total levels of PCDFs as high as 650000 pg/g sludge. The levels of tetra-, penta-and hexaCDFs were found to be approximately the same. The levels for the corresponding PCDDs were below the detection level. The dominating congeners within each group are the toxic 2,3,7,8-substituted PCDFs at levels of 340000 pg/g, This typical pattern, called the “chloralkali pattern” can also be found in soil samples taken at another chloralkali plant. The typical pattern can also be identified in a solution of ferric chloride. Traces of “chloralkali pattern” are identified in a sludge sample from the drinking water purification plant, the source for PCDFs in the sludge is unknown. 相似文献
140.
Managing climate change risks in New York City’s water system: assessment and adaptation planning 总被引:4,自引:0,他引:4
Cynthia Rosenzweig David C. Major Kate Demong Christina Stanton Radley Horton Melissa Stults 《Mitigation and Adaptation Strategies for Global Change》2007,12(8):1391-1409
Managing risk by adapting long-lived infrastructure to the effects of climate change must become a regular part of planning
for water supply, sewer, wastewater treatment, and other urban infrastructure during this century. The New York City Department
of Environmental Protection (NYCDEP), the agency responsible for managing New York City’s (NYC) water supply, sewer, and wastewater
treatment systems, has developed a climate risk management framework through its Climate Change Task Force, a government-university
collaborative effort. Its purpose is to ensure that NYCDEP’s strategic and capital planning take into account the potential
risks of climate change—sea-level rise, higher temperature, increases in extreme events, changes in drought and flood frequency
and intensity, and changing precipitation patterns—on NYC’s water systems. This approach will enable NYCDEP and other agencies
to incorporate adaptations to the risks of climate change into their management, investment, and policy decisions over the
long term as a regular part of their planning activities. The framework includes a 9-step Adaptation Assessment procedure.
Potential climate change adaptations are divided into management, infrastructure, and policy categories, and are assessed
by their relevance in terms of climate change time-frame (immediate, medium, and long term), the capital cycle, costs, and
other risks. The approach focuses on the water supply, sewer, and wastewater treatment systems of NYC, but has wide application
for other urban areas, especially those in coastal locations. 相似文献