全文获取类型
收费全文 | 1750篇 |
免费 | 13篇 |
国内免费 | 11篇 |
专业分类
安全科学 | 44篇 |
废物处理 | 85篇 |
环保管理 | 182篇 |
综合类 | 171篇 |
基础理论 | 333篇 |
环境理论 | 3篇 |
污染及防治 | 651篇 |
评价与监测 | 170篇 |
社会与环境 | 129篇 |
灾害及防治 | 6篇 |
出版年
2023年 | 17篇 |
2022年 | 47篇 |
2021年 | 54篇 |
2020年 | 23篇 |
2019年 | 25篇 |
2018年 | 38篇 |
2017年 | 54篇 |
2016年 | 80篇 |
2015年 | 55篇 |
2014年 | 91篇 |
2013年 | 157篇 |
2012年 | 118篇 |
2011年 | 140篇 |
2010年 | 80篇 |
2009年 | 85篇 |
2008年 | 117篇 |
2007年 | 104篇 |
2006年 | 97篇 |
2005年 | 64篇 |
2004年 | 60篇 |
2003年 | 49篇 |
2002年 | 64篇 |
2001年 | 27篇 |
2000年 | 13篇 |
1999年 | 13篇 |
1998年 | 10篇 |
1997年 | 8篇 |
1996年 | 11篇 |
1995年 | 12篇 |
1994年 | 12篇 |
1993年 | 6篇 |
1992年 | 3篇 |
1991年 | 4篇 |
1990年 | 4篇 |
1989年 | 2篇 |
1988年 | 2篇 |
1986年 | 2篇 |
1983年 | 4篇 |
1982年 | 2篇 |
1981年 | 2篇 |
1978年 | 1篇 |
1977年 | 2篇 |
1976年 | 1篇 |
1975年 | 1篇 |
1973年 | 1篇 |
1966年 | 1篇 |
1965年 | 3篇 |
1964年 | 1篇 |
1958年 | 2篇 |
1956年 | 1篇 |
排序方式: 共有1774条查询结果,搜索用时 875 毫秒
651.
Bravo AG Bouchet S Amouroux D Poté J Dominik J 《Journal of environmental monitoring : JEM》2011,13(4):974-982
In Lake Geneva, Switzerland, the most Hg-contaminated sediments have been found in the Vidy Bay where high Hg contents largely exceeds the background levels of Lake Geneva sediments. This contamination has been attributed to the discharge of a waste water treatment plant (WWTP). Total Hg (THg) and monomethylmercury (MMHg) were determined in bulk sediment and in three different grain size fractions (i: clay and silt, ii: fine-coarse sand, iii: and very coarse sand and gravel) collected close to the outlet pipe of a WWTP in order to verify whether the standardized procedures of sediment treatment is adequate for this setting and, by extension, for similar contaminated sites. THg was homogeneously distributed in the different grain size fractions and was correlated to organic matter content (R(2) = 0.6). MMHg was homogeneously distributed in the two finer grain fractions (Φ < 0.063 mm; 0.063 mm < Φ <1 mm). The results of this study suggested that the analysis of the bulk sediment seems to be more appropriate for the assessment of the content and spatial distribution of Hg in freshwater sediments contaminated by WWTPs. 相似文献
652.
Pedro Gon?alves Rodrigues Lu��s Moreira Gon?alves Paulo Jorge Magalh?es Jo?o Grosso Pacheco Jos�� Ant��nio Rodrigues Aquiles Ara��jo Barros 《Environmental Chemistry Letters》2011,9(3):405-410
An major research area in environmental chemistry is the development of methods for the analysis of biomarkers. Metallothioneins
are used as biomarkers in studies of heavy metals exposure in water, because metallothioneins are synthesized and accumulated
when organisms are exposed to toxic concentrations of pollutants. In this work, simple and sensitive voltammetric methods
were developed for metallothionein and copper (II) determinations in fish liver Lepomis gibbosus. Both analytical methodologies were optimized and applied to samples extracted from individuals previously submitted to sub-lethal
toxicological trials with copper sulphate (CuSO4) and cadmium chloride (CdCl2). The obtained results showed that both methods are very precise, sensitive, and involve simple sample preparation processes.
Moreover, metallothioneins showed better correlation with the toxic exposure than Cu2+. To the best of our knowledge, this is the first time that hepatic metallothioneins and Cu2+ contents are voltammetrically determined in order to be compared in their function as heavy metal biological indicators. 相似文献
653.
Mart�� Nadal N��ria Casacuberta Jordi Garcia-Orellana N��ria Ferr��-Huguet Pere Masqu�� Marta Schuhmacher Jos�� L. Domingo 《Environmental monitoring and assessment》2011,175(1-4):455-468
This study was aimed at assessing the levels of 210Pb and 210Po concentrations as well as gross alpha and beta activities in environmental monitors from the Catalan stretch of the Ebro River (Spain), potentially influenced by the presence of sediments with high concentrations of 238U and its decay chain daughters in the Flix reservoir. The chronic daily intake of 210Pb and 210Po through ingestion and inhalation of soils was evaluated, and the derived non-carcinogenic and carcinogenic risks were characterized. The low concentration of radioisotopes in soils resulted in a negligible annual effective dose. The levels of 210Pb and 210Po were determined in various groups of highly consumed food (fish and seafood, vegetables, fruits, and rice), and their dietary intake was calculated. The annual effective dose for the adult people from food intake was estimated in 3.3 × 10???2 mSv, mostly due to 210Po. Overall, the current radioactivity levels in the Catalan stretch of the Ebro River should not mean any additional health risk for the population living nearby. However, an integral assessment of the risks derived from exposure to other pollutants (e.g., metals and organochlorine compounds) jointly with radionuclides could be of great interest. 相似文献
654.
Em��lia Silva Sofia Batista Lia Caetano Maria Jos�� Cerejeira Manuela Chaves Sven-Erik Jacobsen 《Environmental monitoring and assessment》2011,176(1-4):331-341
An integrated chemical and biological approach for the quality assessment of freshwater resources in a vineyard area of the ??Alentejo?? region (South Portugal) is presented. This includes analysis to 11 pesticide compounds and whole toxicity testing on algae and crustaceans. Simazine, terbuthylazine, terbutryn, desethylatrazine and chlorpyrifos were the most frequently detected pesticides in water collected from wells and drainage channels. Mixtures of up to three compounds in different qualitative combinations were also found. The quality standards for individual pesticides (0.1 ??g L???1) and pesticides-total (0.5 ??g L???1) were exceeded in some samples. However, their maximum concentrations were lower than the WHO guidelines, the USEPA health advisory values and the environmental quality standards for priority substances applicable to surface water. In five samples, the herbicides terbuthylazine and terbutryn and the insecticide chlorpyrifos did not pass the toxicity exposure ratio (TER) trigger values specified for aquatic organisms (algae, Daphnia and fish). Maximum toxic effects on Daphnia magna (100%) and Pseudokirchneriella subcapitata (82.56%) were determined in groundwater samples, while in surface water, no toxicity was observed. Concerning effects on Heterocypris incongruens in sediment samples collected at the drainage channels, mortality and growth inhibition values were below 38%. Pro-active management of the use of pesticides is recommended for implementing at the farm and catchment level to reduce inputs into ground- and surface water. 相似文献
655.
Isaac José Antonio Luquetti dos Santos Marcos Santana Farias Fernando Toledo Ferraz Assed Naked Haddad Suzana Hecksher 《Journal of Loss Prevention in the Process Industries》2013,26(6):1308-1320
Human factors deal with issues related to humans, their behavior and the physical aspect of the environment in which they work. A control room is a complex system where operators perform plant operation using control systems and carry out monitoring and administrative responsibilities. For safe operation of industrial installation, the performance of the control room crew plays an important role. In this respect, a well designed control room is crucial for safe and efficient operation. The aim of this paper is to propose a methodological framework applied to nuclear control room evaluation, through participatory ergonomics, using operator activity analysis and human factors questionnaire as aid tools. We describe a case study in which the methodology framework was used in the evaluation process of a nuclear control room. The information gathered made possible a series of recommendation for the adequacy of the control room design, assisting in the safety assessment of the nuclear plant operation and justifying the alarm panel modernization. 相似文献
656.
Oscar Oviedo-Trespalacios Laura Martínez Buelvas José Hernández Jaime Escobar 《International journal of occupational safety and ergonomics》2013,19(4):472-480
The main purpose of this study is to gather information about the dimensions of the northern Colombian (Caribbean region) population, focusing on the dimensions of the hand and comparing them with measurements from other regions. Thirty-two hand dimensions were chosen and 120 males and 86 females were measured. Results indicated that there were differences between the dimensions of the hand for men and women, showing that men are larger. Also, there was a comparison made between some measurements of other studies in different regions of Colombia, the USA, Chile, Jordan, Korea and Japan. The results indicated important physiological differences between regions in Colombia and across countries. It was therefore concluded that differences in anthropometric measurements must be included in the design and procurement of machinery and apparatus in order to avoid productivity loss, occupational injuries or illness. 相似文献
657.
Simoneta Negrete-Yankelevich Luciana Porter-Bolland José Luis Blanco-Rosas Isabelle Barois 《Environmental management》2013,52(1):45-60
Land degradation is a serious problem in tropical mountainous areas. Market prices, technological development, and population growth are often invoked as the prime causes. Using historical agrarian documents, literature sources, and historical population data, we (1) provide quantitative and qualitative evidence that the land degradation present at Sierra de Santa Marta (Los Tuxtlas, Mexico) has involved a historical reduction in the temporal, spatial, and diversity scales, in which individual farmers make management decisions, and has resulted in decreased maize productivity; and (2) analyze how these three scalar changes can be linked to policy, population growth, and agrarian history. We conclude that the historical reduction in the scales of land use decision-making and practices constitutes a present threat to indigenous agricultural heritage. The long-term viability of agriculture requires that initiatives consider incentives for co-responsibility with an initial focus on self-sufficiency. 相似文献
658.
Stephen S. Hale Melville P. Coté Jr. Mark A. Tedesco Renee Searfoss 《Environmental management》2013,51(4):862-873
Continuing pressures from human activities have harmed the health of ocean ecosystems, particularly those near the coast. Current management practices that operate on one sector at a time have not resulted in healthy oceans that can sustainably provide the ecosystem services humans want and need. Now, adoption of ecosystem-based management (EBM) and coastal and marine spatial planning (CMSP) as foundational principles for ocean management in the United States should result in a more holistic approach. Recent marine biogeographical studies and benthic habitat mapping using satellite imagery, large-scale monitoring programs, ocean observation systems, acoustic and video techniques, landscape ecology, geographic information systems, integrated databases, and ecological modeling provide information that can support EBM, make CMSP ecologically meaningful, and contribute to planning for marine biodiversity conservation. Examples from coastal waters along the northeast coast of the United States from Delaware Bay to Passamaquoddy Bay, Maine, illustrate how benthic biogeography and bottom seascape diversity information is a useful lens through which to view EBM and CMSP in nearshore waters. The focus is on benthic communities, which are widely used in monitoring programs and are sensitive to many stresses from human activities. 相似文献
659.
Luigi Bruzzi Valentina Boragno Simona Verità José Luis Rosúa-Campos 《Local Environment》2013,18(2):93-113
The sustainability concept applied to human activities implies the need to harmonise the protection of environment with a satisfactory economic and social development. This is particularly true for tourism development: a misuse of the natural resources can cause a degradation of the tourist appeal of the destination, bringing it finally to its economic decline. This problem is particularly important in coastal tourism destinations. The implementation of an environmental management system is a powerful way for progressing towards better environmental performances. In this paper, the main results obtained in applying the Eco-Management and Audit Scheme procedure to the municipality of Cervia, a well-known tourist destination located on the Adriatic coast of Italy are described. This research puts into evidence that the main environmental pressures in the summer season are related to the supply of potable water, the production of solid wastes and wastewater air pollution and noise, etc. However, if correctly planned and managed, tourism can also contribute to environmental protection, to the conservation of biodiversity and to a sustainable use of natural resources. 相似文献
660.
Community Sustainability Plans to enable change towards sustainable practice – a Scottish case study
Joanneke Hélène Joséphine Kruijsen Alan Owen Donald Murray Gordon Boyd 《Local Environment》2013,18(7):748-766
There is a need for a global shift towards a low-carbon society and this requires action at the local level. The aim of the study into sustainable community development is to clarify the role of a community as a whole rather than the role of individuals within that community. Mixed methods of literature review and empirical study have been used to translate the knowledge and experience with urban sustainable development into empirical knowledge of a rural, market town setting. The exemplary case study is the Scottish market town Huntly. The main findings of the study show the need for three ingredients for a Community Sustainability Plan for a town such as Huntly. Community involvement is crucial in developing such plans in a rural setting. Further research in more remote settings, e.g. coastal and island communities, is needed to allow broader conclusions on rural sustainable development. 相似文献