全文获取类型
收费全文 | 582篇 |
免费 | 7篇 |
国内免费 | 5篇 |
专业分类
安全科学 | 18篇 |
废物处理 | 12篇 |
环保管理 | 45篇 |
综合类 | 212篇 |
基础理论 | 110篇 |
环境理论 | 2篇 |
污染及防治 | 139篇 |
评价与监测 | 30篇 |
社会与环境 | 24篇 |
灾害及防治 | 2篇 |
出版年
2021年 | 11篇 |
2020年 | 8篇 |
2019年 | 7篇 |
2018年 | 19篇 |
2017年 | 21篇 |
2016年 | 15篇 |
2015年 | 18篇 |
2014年 | 13篇 |
2013年 | 30篇 |
2012年 | 28篇 |
2011年 | 30篇 |
2010年 | 25篇 |
2009年 | 25篇 |
2008年 | 19篇 |
2007年 | 29篇 |
2006年 | 19篇 |
2005年 | 19篇 |
2004年 | 14篇 |
2003年 | 12篇 |
2002年 | 9篇 |
2001年 | 5篇 |
2000年 | 4篇 |
1999年 | 15篇 |
1998年 | 5篇 |
1997年 | 6篇 |
1995年 | 4篇 |
1994年 | 6篇 |
1988年 | 6篇 |
1987年 | 6篇 |
1986年 | 4篇 |
1985年 | 8篇 |
1970年 | 4篇 |
1967年 | 6篇 |
1965年 | 6篇 |
1964年 | 7篇 |
1963年 | 3篇 |
1962年 | 7篇 |
1961年 | 3篇 |
1960年 | 6篇 |
1958年 | 4篇 |
1957年 | 3篇 |
1956年 | 4篇 |
1955年 | 3篇 |
1954年 | 7篇 |
1952年 | 4篇 |
1942年 | 4篇 |
1939年 | 5篇 |
1938年 | 3篇 |
1931年 | 4篇 |
1926年 | 3篇 |
排序方式: 共有594条查询结果,搜索用时 264 毫秒
71.
72.
73.
74.
75.
Bob Fischer 《Journal of Agricultural and Environmental Ethics》2018,31(3):295-306
Gary Francione is an abolitionist: he maintains that we ought to abolish the institutions and practices that support the exploitation of animals. He also believes that veganism is the “moral baseline”—that is, he thinks it’s morally required of nearly everyone in the developed world, and many beyond it. Luis Cordeiro-Rodrigues claims that abolitionism is guilty of racism, albeit “racism without racists.” I contend that his arguments for this conclusion aren’t successful. 相似文献
76.
Thomas B. Fischer 《Journal of Environmental Planning and Management》1999,42(2):189-219
This paper is based on research conducted in 1997 and 1998 at the EIA Centre, University of Manchester. It examines the extent to which transport infrastructure related policies, plans and programmes (PPPs) in the three EU regions of North West England, the provincie (administrativeregion) of Noord-Hollandand the engerer Verflechtungsraum (EVR, planning region) of Brandenburg-Berlinconsider (environmental) sustainability issues in the form of objectives, targets and related options/measures for action. Furthermore, the role strategic environmental assessment (SEA) appears to play in this context is elaborated. The analytical framework for comparison is based on the sustainable development strategy of the European Commission, the Fifth Action Programme (Commission of the European Communities, 1993). 相似文献
77.
Michael J. Lavelle Gregory E. Phillips Justin W. Fischer Patrick W. Burke Nathan W. Seward Randal S. Stahl Tracy A. Nichols Bruce A. Wunder Kurt C. VerCauteren 《Environmental geochemistry and health》2014,36(6):1049-1061
Free-ranging cervids acquire most of their essential minerals through forage consumption, though occasionally seek other sources to account for seasonal mineral deficiencies. Mineral sources occur as natural geological deposits (i.e., licks) or as anthropogenic mineral supplements. In both scenarios, these sources commonly serve as focal sites for visitation. We monitored 11 licks in Rocky Mountain National Park, north-central Colorado, using trail cameras to quantify daily visitation indices (DVI) and soil consumption indices (SCI) for Rocky Mountain elk (Cervus elaphus) and mule deer (Odocoileus hemionus) during summer 2006 and documented elk, mule deer, and moose (Alces alces) visiting licks. Additionally, soil samples were collected, and mineral concentrations were compared to discern levels that explain rates of visitation. Relationships between response variables; DVI and SCI, and explanatory variables; elevation class, moisture class, period of study, and concentrations of minerals were examined. We found that DVI and SCI were greatest at two wet, low-elevation licks exhibiting relatively high concentrations of manganese and sodium. Because cervids are known to seek Na from soils, we suggest our observed association of Mn with DVI and SCI was a likely consequence of deer and elk seeking supplemental dietary Na. Additionally, highly utilized licks such as these provide an area of concentrated cervid occupation and interaction, thus increasing risk for environmental transmission of infectious pathogens such as chronic wasting disease, which has been shown to be shed in the saliva, urine, and feces of infected cervids. 相似文献
78.
The effects of NiCl2 were studied in two human cell lines, HeLa and diploid embryonic fibroblasts as well as in V79 Chinese hamster cells and in L‐A mouse fibroblasts. NiCl2 produces a dose‐dependent depression of proliferation, mitotic rate, and viability, accompanied by an increasing release of lactic dehydrogenase and stimulation of lactic acid production. The plating efficiency is reduced, as are DNA and protein synthesis and, to a lesser degree, RNA synthesis. The cytotoxicity of NiCl2 is comparable in degree to those of PbCl2 and MnCl2, but is weaker than those of HgCl2 and CdCl2. However, the different sensitivities of different cell lines must also be considered. NiCl2 effects are more severe in serum‐free medium than in medium containing serum or serum albumin indicating that serum constituents, notably albumin, bind the metal effectively and inhibit cellular uptake; this confirms earlier reports on the serum binding and slow uptake of NiCl2. Synchronized cells are most sensitive in the Gl and early S phases of the cell cycle. In the Painter test the depression of DNA synthesis persists following cessation of exposure to NiCI2. These findings contribute an explanation for the known genotoxic effects of nickel. 相似文献
79.
Algae blooms, which can be caused by eutrophication, drastically influence the ecology and behaviour of aquatic organisms. Such impact is often demonstrated in the context of mate choice and predator–prey interactions. In contrast, the influence of increased turbidity on social behaviour is less well understood, although it may have strong influence, at both the level of the individual and the population. We aimed to address this gap in our knowledge by using the well-described preference of three-spined sticklebacks (Gasterosteus aculeatus) to shoal with the larger of two shoals as model behaviour. In our experiments focal fish had the choice between two shoals of different sizes, either in clear or in turbid water containing green algae. Fish in clear water spent significantly more time near the larger shoal, while fish in algae water showed no significant preferences. Furthermore, fish tested in clear water changed more often between the shoals than fish tested in algae water. These results indicate that eutrophication-induced algae blooms have the potential to alter social decisions of sticklebacks. Such changes of social decisions do not only influence the behaviour of individuals, furthermore it might influence entire populations. This might eventually lead to changes of the structure of the social system. 相似文献
80.
Drysdale M Ljung Bjorklund K Jamieson HE Weinstein P Cook A Watkins RT 《Environmental geochemistry and health》2012,34(2):279-288
Simulated lung fluids are solutions designed to mimic the composition of human interstitial lung fluid as closely as possible.
Analysis of mineral dusts using such solutions has been used to evaluate the respiratory bioaccessibility of various elements
for which solubility in the lungs is a primary determinant of reactivity. The objective of this study was to employ simulated
lung fluid analysis to investigate the respiratory bioaccessibility of nickel in soils. Current occupational guidelines in
Australia regulate nickel compounds in terms of water solubility, though this may not be an accurate estimation of the total
nickel that will dissociate in the lungs. Surface soils were collected from the city of Kalgoorlie in Western Australia, the
site of an operational nickel smelter and metal mining activities. The fraction of the samples less than 10 μm was extracted
from the soil, and it was this sub-10-μm fraction that was found to hold most of the total nickel present in the soil. The
fine fraction was analyzed using a simulated lung fluid (modified Gamble’s solution) to isolate the nickel phases soluble
in the lungs. In addition, a sequential extraction was employed to compare the bioaccessible fraction to those dissolved from
different binding forms in the soil. In all samples, the simulated lung fluid extracted more nickel than the two weakest leaches
of the sequential extraction combined, providing a more representative nickel bioaccessibility value than the current water
leach method. 相似文献