全文获取类型
收费全文 | 265篇 |
免费 | 4篇 |
国内免费 | 1篇 |
专业分类
安全科学 | 17篇 |
废物处理 | 26篇 |
环保管理 | 31篇 |
综合类 | 29篇 |
基础理论 | 35篇 |
环境理论 | 1篇 |
污染及防治 | 104篇 |
评价与监测 | 17篇 |
社会与环境 | 10篇 |
出版年
2023年 | 7篇 |
2022年 | 7篇 |
2021年 | 6篇 |
2020年 | 3篇 |
2019年 | 6篇 |
2018年 | 12篇 |
2017年 | 12篇 |
2016年 | 9篇 |
2015年 | 13篇 |
2014年 | 13篇 |
2013年 | 23篇 |
2012年 | 14篇 |
2011年 | 21篇 |
2010年 | 11篇 |
2009年 | 9篇 |
2008年 | 16篇 |
2007年 | 17篇 |
2006年 | 11篇 |
2005年 | 20篇 |
2004年 | 15篇 |
2003年 | 4篇 |
2002年 | 6篇 |
2001年 | 5篇 |
2000年 | 1篇 |
1998年 | 1篇 |
1996年 | 2篇 |
1994年 | 1篇 |
1982年 | 1篇 |
1974年 | 1篇 |
1963年 | 1篇 |
1961年 | 1篇 |
1957年 | 1篇 |
排序方式: 共有270条查询结果,搜索用时 93 毫秒
181.
Individuals’ food choices are intimately connected to their self-images and world views. Some dietary choices adopted by consumers
pose restrictions on their use of genetically modified food (GMF). It is quite generally agreed that some kind of labeling
is necessary for respecting consumers’ autonomy of choice regarding GMF. In this paper, we ask whether the current practice of mandatory
labeling of GMF products in the European Union is a sufficient administrative procedure for respecting consumers’ autonomy. Three issues concerning this question are discussed. First,
we argue that labeling needs to be accompanied by relevant and understandable information on genetic modification, genetically
modified food, and the European practice of GMF labeling. Second, we claim that this type of informing makes it less likely
that consumers start to avoid GMF products just because labels make them suspicious of the products. It is further noted that
even though some consumers may react to labels this way, labels do not restrict their autonomy of choice. Third, a need for
more precise labels indicating the source of the transferred gene is considered. It is found out that such labels are not
morally necessary when also non-GMF products are available and no relevant differences (such as differences in price and healthiness)
exist between them and GMF products. However, in some other cases more precise labels may be needed for respecting consumers’
autonomy of choice. 相似文献
182.
183.
184.
185.
Izonete Cristina Guiloski Stéfani Cibele Rossi Cesar Aparecido da Silva Helena Cristina Silva de Assis 《Journal of environmental science and health. Part. B》2013,48(4):272-277
This study was undertaken to investigate the effects of sublethal concentration of three different classes of insecticides (carbamate, organophosphate, and pyrethroid compounds) on the freshwater fish Corydoras paleatus. For this purpose, fish were exposed for 96 hours to commercial pesticides. Different biomarkers were analyzed as levels of lipid peroxidation (LPO), piscine micronucleus test, and enzymatic activities of catalase (CAT), glutathione S-transferase (GST), and acetylcholinesterase (AChE). The brain AChE was inhibited with carbaryl and methyl parathion, but no inhibition was observed with deltamethrin. The insecticides did not cause oxidative stress or genotoxic effects at the tested concentrations. Further studies are needed to elucidate the biotransformation of Corydoras paleatus insecticides and a possible resistance mechanism. 相似文献
186.
187.
In many countries over the last decades, state initiatives have emerged to promote and support public participation in policy-making. Despite the emphasis on participation and deliberation, there are groups that remain outside the participatory proceedings. We follow through two case studies from Finland on how active citizen groups became excluded in the policy processes but decided to act nevertheless. Conceptually, the article tells two stories about multi-signification and improvisation in nature conservation processes from the citizen participation point of view. Using practice-oriented policy analysis, we explore the actors' conflicting interpretations of acting for “the sake of the lake”. We argue that in these kinds of complex policy processes, improvisation should be given more space. 相似文献
188.
Electronic version of the encyclopaedia of occupational health and safety as a source of definitions
Dryzek H 《Journal of Safety Research》2002,33(2):155-163
PROBLEM: Continuous progress in the occupational safety and health field, as well as social-economic development, generates a need for access to definitions. Definitions are usually scattered in many sources and not easy to find. Electronic documents give new opportunity to information access. METHOD: As an experiment, the feasibility of automatic full-text searching of definitions was examined using the Encyclopaedia of Occupational Health and Safety, edited by the International Labour Organization (ILO), on CD-ROM. DISCUSSION: The results were compared with the traditional index search by subject, using the paper version of the encyclopedia. The automatic search appeared successful; about 100 definitions were excerpted the automatic way. IMPACT ON INDUSTRY: As in most industries, finding accurate information is a necessity in the safety industry. The electronic document seems to be a powerful instrument as a source of definitions and can be quite easy to use by specialists as well as safety personnel in information processing. 相似文献
189.
Alexander Ziv Ruwim Berkowicz Eugene Genikhovich Finn Palmgren Ekaterina Yakovleva 《Water, Air, & Soil Pollution: Focus》2002,2(5-6):297-310
Since October 1998 two DOAS instruments were installed at the level of the first floor and at the top of a building located in St. Petersburg at Pestelya Street. The collected datacovers the time period of December 1998–March 2001, and include concentrations of benzene, toluene, NO and NO2, ozone and SO2. There is also an additional information about the traffic intensity and meteorological conditions. The results of the analysis of this data set, using the OSPM model, are presented here with the goal to understand the features of the air pollution dispersion in this street canyon and to analyse the information about the emission factors of the vehicles. In particular, the model results are used for the solution of the inverse problem of reconstructing the emission factors from measured concentrations. The results obtained indicate that most of the concentrations are well inside the Russian standards with the only exception of NO2 (mean and 98-th percentile are equal to 57.8 and 119.2 g m-3 for the street level). The same values for benzene are 18.5 and 62.6, respectively. Emission estimates show that there is a possibility that the NOx and benzene basic emission factors recommended by the Russian national guidelines could result in overestimating the traffic emissions. These considerations are supplemented with the model sensitivity tests carried out in connection with the problem of predictability of NO2 concentrations in the street canyon. Tests indicate that NO2 concentrations are not very sensitive to NOx emissions because of the usually low urban background ozone levels. 相似文献
190.
Paranhos Gazineu MH de Araújo AA Brandão YB Hazin CA de O Godoy JM 《Journal of environmental radioactivity》2005,81(1):47-54
Scales and sludge generated during oil extraction and production can contain uranium, thorium, radium and other natural radionuclides, which can cause exposure of maintenance personnel. This work shows how the oil content can influence the results of measurements of radionuclide concentration in scale and sludge. Samples were taken from a PETROBRAS unit in Northeast Brazil. They were collected directly from the inner surface of water pipes or from barrels stored in the waste storage area of the E&P unit. The oil was separated from the solids with a Soxhlet extractor by using aguarras at 90+/-5 degrees C as solvent. Concentrations of 226Ra and 228Ra in the samples were determined before and after oil extraction by using an HPGe gamma spectrometric system. The results showed an increase in the radionuclide concentration in the solid (dry) phase, indicating that the above radionuclides concentrate mostly in the solid material. 相似文献