全文获取类型
收费全文 | 365篇 |
免费 | 1篇 |
国内免费 | 1篇 |
专业分类
安全科学 | 11篇 |
废物处理 | 14篇 |
环保管理 | 15篇 |
综合类 | 36篇 |
基础理论 | 55篇 |
环境理论 | 1篇 |
污染及防治 | 141篇 |
评价与监测 | 59篇 |
社会与环境 | 34篇 |
灾害及防治 | 1篇 |
出版年
2022年 | 6篇 |
2021年 | 2篇 |
2020年 | 2篇 |
2019年 | 12篇 |
2018年 | 14篇 |
2017年 | 15篇 |
2016年 | 18篇 |
2015年 | 10篇 |
2014年 | 15篇 |
2013年 | 61篇 |
2012年 | 17篇 |
2011年 | 28篇 |
2010年 | 19篇 |
2009年 | 13篇 |
2008年 | 17篇 |
2007年 | 22篇 |
2006年 | 19篇 |
2005年 | 12篇 |
2004年 | 7篇 |
2003年 | 5篇 |
2002年 | 3篇 |
2001年 | 3篇 |
2000年 | 6篇 |
1998年 | 1篇 |
1997年 | 1篇 |
1996年 | 1篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1992年 | 3篇 |
1986年 | 1篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1982年 | 3篇 |
1981年 | 1篇 |
1978年 | 1篇 |
1974年 | 1篇 |
1973年 | 2篇 |
1972年 | 2篇 |
1970年 | 1篇 |
1969年 | 1篇 |
1968年 | 2篇 |
1966年 | 1篇 |
1960年 | 2篇 |
1959年 | 4篇 |
1958年 | 2篇 |
1957年 | 1篇 |
1956年 | 5篇 |
排序方式: 共有367条查询结果,搜索用时 265 毫秒
251.
252.
253.
254.
255.
Malenica N Simon S Besendorfer V Maletić E Kontić JK Pejić I 《Die Naturwissenschaften》2011,98(9):763-772
Reconstruction of the grapevine cultivation history has advanced tremendously during the last decade. Identification of grapevine
cultivars by using microsatellite DNA markers has mostly become a routine. The parentage of several renowned grapevine cultivars,
like Cabernet Sauvignon and Chardonnay, has been elucidated. However, the assembly of a complete grapevine genealogy is not
yet possible because missing links might no longer be in cultivation or are even extinct. This problem could be overcome by
analyzing ancient DNA from grapevine herbarium specimens and other historical remnants of once cultivated varieties. Here,
we present the first successful genotyping of a grapevine herbarium specimen and the identification of the corresponding grapevine
cultivar. Using a set of nine grapevine microsatellite markers, in combination with a whole genome amplification procedure,
we found the 90-year-old Tribidrag herbarium specimen to display the same microsatellite profile as the popular American cultivar Zinfandel. This work, together
with information from several historical documents, provides a new clue of Zinfandel cultivation in Croatia as early as the
beginning of fifteenth century, under the native name Tribidrag. Moreover, it emphasizes substantial information potential of existing grapevine and other herbarium collections worldwide. 相似文献
256.
Slavica Rajšić Zoran Mijić Mirjana Tasić Mirjana Radenković Jasminka Joksić 《Environmental Chemistry Letters》2008,6(2):95-100
An assessment of air quality of Belgrade, Serbia, was performed by determining the trace element content in airborne daily
PM10 and PM2.5 samples collected from a central urban area. The ambient concentrations of Zn were the highest in PM2.5 (1,998.0 ng m−3). Multivariate receptor modelling (principal component analysis and cluster analysis) has been applied to determine the contribution
of different sources of specific metallic components in airborne particles. The obtained results showed that vehicle traffic
and fossil fuel combustion in stationary objects were the main sources of trace metals in Belgrade urban aerosols. 相似文献
257.
Abstract INA‐Petrochemical Industry Omi?alj, Yugoslavia is currently producing low density polyethylene, vinyl chloride monomer and ethylene dichloride. Because of a potentially great hazard for environmental pollution, particularly by low molecular weight chlorinated hydrocarbons, the company has been putting significant effort into its anti‐pollution programme. Modern technology, polyfunctional organization and proper control of all waste materials has enabled, thus far, no evident or noticable impact on the environment. Wastewater treatment from the source to final discharged effluent and environmental control results are described. 相似文献
258.
Groundwater pumping can reduce the flow of surface water in nearby streams. In the United States, recent awareness of this externality has led to intra- and inter-state conflict and rapidly-changing water management policies and institutions. Although the marginal damage of groundwater use on stream flows depends crucially on the location of pumping relative to streams, current regulations are generally uniform over space. We use a population data set of irrigation wells in the Nebraska portion of the Republican River Basin to analyze whether adopting spatially differentiated groundwater pumping regulations leads to significant reductions in farmer abatement costs and costs from damage to streams. We find that regulators can generate most of the potential savings in total social costs without accounting for spatial heterogeneity. However, if regulators need to increase the protection of streams significantly from current levels, spatially differentiated policies will yield sizable cost savings. 相似文献
259.
260.
Z. Mijić A. Stojić M. Perišić S. Rajšić M. Tasić M. Radenković J. Joksić 《Atmospheric environment (Oxford, England : 1994)》2010,44(30):3630-3637
The primary objective of this study is to assess anthropogenic impacts on the environment by determination of element atmospheric depositions. Bulk depositions were collected monthly, from June 2002 to December 2006, at three urban locations in Belgrade. Concentrations of Al, V, Cr, Mn, Fe, Ni, Cu, Zn, Cd and Pb were analyzed by atomic absorption spectrometry and the current deposition fluxes of atmospheric metals were established. Fourier analysis was applied in order to investigate seasonal variation of the monthly data set. Nickel, V, Fe and Al showed pronounced seasonal dependence, while seasonal variation of the other elements was not evident. The enrichment factors of Pb, Zn, Cd and Cu were obviously above those who could have been caused by natural processes, indicating a mainly anthropogenic origin. Nickel was intermediately enriched suggesting participation of both natural and anthropogenic sources. The multivariate receptor model, Unmix, was used to analyze a 5-yr element atmospheric depositions data set. Three main source profiles (mixed road dust, oil combustion and metal processing) were identified and the overall average percentage source contributions determined. 相似文献