全文获取类型
收费全文 | 385篇 |
免费 | 5篇 |
国内免费 | 12篇 |
专业分类
安全科学 | 23篇 |
废物处理 | 17篇 |
环保管理 | 27篇 |
综合类 | 72篇 |
基础理论 | 85篇 |
污染及防治 | 123篇 |
评价与监测 | 33篇 |
社会与环境 | 19篇 |
灾害及防治 | 3篇 |
出版年
2023年 | 2篇 |
2022年 | 9篇 |
2021年 | 5篇 |
2020年 | 3篇 |
2019年 | 4篇 |
2018年 | 8篇 |
2017年 | 11篇 |
2016年 | 9篇 |
2015年 | 16篇 |
2014年 | 20篇 |
2013年 | 22篇 |
2012年 | 19篇 |
2011年 | 27篇 |
2010年 | 18篇 |
2009年 | 21篇 |
2008年 | 21篇 |
2007年 | 21篇 |
2006年 | 31篇 |
2005年 | 22篇 |
2004年 | 9篇 |
2003年 | 20篇 |
2002年 | 11篇 |
2001年 | 5篇 |
2000年 | 4篇 |
1999年 | 5篇 |
1998年 | 3篇 |
1997年 | 8篇 |
1995年 | 4篇 |
1994年 | 6篇 |
1990年 | 2篇 |
1987年 | 1篇 |
1986年 | 3篇 |
1985年 | 2篇 |
1984年 | 3篇 |
1982年 | 2篇 |
1981年 | 3篇 |
1980年 | 2篇 |
1977年 | 1篇 |
1975年 | 1篇 |
1971年 | 2篇 |
1970年 | 2篇 |
1969年 | 1篇 |
1966年 | 1篇 |
1963年 | 1篇 |
1962年 | 1篇 |
1956年 | 1篇 |
1954年 | 1篇 |
1950年 | 1篇 |
1941年 | 1篇 |
1936年 | 1篇 |
排序方式: 共有402条查询结果,搜索用时 15 毫秒
171.
Boucabeille C Bories A Ollivier P Michel G 《Environmental pollution (Barking, Essex : 1987)》1994,84(1):59-67
A microbiological examination of the soil from a cyanide wastewater storage basin was carried out. The storage basin contained water from the cyanidation process of gold extraction, and it was composed principally of simple cyanide, metal complexed cyanide, mainly cuprocyanide, ferro-ferricyanides and thiocyanate. Pseudomonas species were the principal bacteria identified in the soil. Using the storage basin soil as a seed sludge, its potential for the biodegradation of all the cyanide complexes in the mining wastewater was studied in the laboratory, using batch, fed-batch and continuous processes. The ammonia and sulphate produced were quantified. The presence of intermediate products was suspected. In the continuous process, total degradation of all cyanide was observed at a dilution rate of 0.066 day(-1). 相似文献
172.
Tremel A Masson P Garraud H Donard OF Baize D Mench M 《Environmental pollution (Barking, Essex : 1987)》1997,97(1-2):161-168
The aim of this study was to assess thallium (Tl) uptake into the aerial parts of selected crop species grown on French soils with high Tl content of pedogeochemical origin (0.3-40 mg Tl kg(-1) on a dry wt (DW) basis). Husked wheat and maize grains contained less than 4 microg Tl kg(-1) DW, but rape shoots accumulated Tl with a shoot-soil partition coefficient (PC) > 1, and rape seeds had PC > 3. Tl content of rape seed reached 33 mg Tl kg(-1) DW and higher concentrations in soil corresponded to increased concentrations in rape seeds. It is argued that parent material of the soil and pedogenesis have a considerable effect on Tl accumulation in rape seeds. These results show enhanced phytoavailability of Tl of pedogeochemical origin and prompt questions on the potential for food chain contamination by Tl in rape cattle cakes. 相似文献
173.
Michel Schalk Marie-Agnès Pierrel Alfred Zimmerlin Yannick Batard Francis Durst Danièle Werck-Reichhart 《Environmental science and pollution research international》1997,4(4):229-234
The ability of a plant cytochrome P450 to bind and metabolise plant endogenous molecules and xenobiotics was investigated.
The work was performed on the yeast-expressed CYP73A1, a cinnamate 4-hydroxylase isolated fromHelianthus tuberosus. CYP73 controls the general phenylpropanoid pathway and is likely to be one of the most abundant sources of P450 in the biosphere.
The enzyme shows a high selectivity toward plant secondary metabolites. Nevertheless, it oxygenates several small and planar
xenobiotics with low efficiency, including an herbicide (chlorotoluron). One xenobiotic molecule, 2naphthoic acid, is hydroxylated
with an efficiency comparable to that of the physiological substrate. This reaction was used to devise a fluorimetric test
for the rapid measurement of enzyme activity. A series of herbicidal molecules (hydroxybenzonitriles) are shown to bind the
active site without being metabolised. These molecules behave as strong competitive inhibitors of CYP73 with a Ki in the same micromolar range as the Km for the physiological substrate. It is proposed that their inhibition of the phenylpropanoid pathway reinforces their other
phytotoxic effects at the level of the chloroplasts. All our results indicate a strong reciprocal interaction between plant
P450s and xenobiotics. 相似文献
174.
We studied the adsorption and desorption of two pesticides, namely isoproturon and dimetomorph, onto a model soil sample.
We first show that the adsorption of isoproturon depends on pH, from 1 mg g−1 at pH 4 to 2 mg g−1 at pH 10, contrary to the adsorption of dimetomorph (5.8 mg g−1). We also studied the influence of metallic cations, copper(II), iron(III), manganese(II), and chromium(III), on the sorption
of isoproturon and dimetomorph. We found that in the case of isoproturon, the presence of metallic cations does influence
the retention capacity of the soil sample. The sorption becomes very weak in the presence of copper and chromium, whereas
in the case of iron and manganese the sorption properties are slightly modified. 相似文献
175.
Massicotte R Robidoux PY Sauvé S Flipo D Fournier M Trottier B 《Journal of environmental monitoring : JEM》2003,5(5):774-779
In order to reduce their energy costs, many cement plants use fuel product substitutes (old tyres and used oil). The combustion of these products generates a metal increase (e.g. Cu, Cd, Pb and Zn) in the atmospheric emissions. After their release, these elements are deposited into the environment and could eventually accumulate up to concentrations of concern. At the Saint-Laurent cement factory (Joliette, QC, Canada), maximum deposition of these elements occurs in the direction of prevailing winds (North-East). We evaluated the potential impact of these depositions upon the immune system of three earthworm species (Lumbricus terrestris, Eisenia andrei and Aporrectodea tuberculata) exposed in a natural environment. The exposure sites were 0.5, 1.0, and 2.0 km downwind from the cement factory, along with an upwind reference site. The immune parameters studied were the cell viability and phagocytic potential of the immune cells (coelomocytes). For both L. terrestris and E. andrei, after 7 d exposure, none of the measured parameters showed significant differences among the sites. On the other hand, for the indigenous worm A. tuberculata, in the most exposed zone (at 0.5 km), we observed an increase in cell viability and phagocytic potential. This increase could possibly be attributed to physicochemical effects such as the alkaline pH of the soil, or alternatively, it could result from beneficial effects induced by an increased calcium supply. 相似文献
176.
177.
Catherine Reid Valérie Bécaert Michel Aubertin Ralph K. Rosenbaum Louise Deschênes 《Journal of Cleaner Production》2009,17(4):471-479
The effective management of mine tailings involves the control of several environmental impacts and legal requirements. Six tailings site management and closure scenarios were developed for a copper zinc underground mine located in Quebec (Canada) and compared using life cycle assessment (LCA). Two options are considered for the mine operation: tailings can be sent to the tailings disposal area where they are submerged or they can be partly used for backfilling. For each of these two operation options, three alternatives are presented for mine closure: (a) submerged tailings, (b) partial desulphurization with a cover of desulphurized material and (c) a cover with capillary barrier effects (CCBE) made of natural soils followed by revegetation. The goals of the study were to draw the inventory of these management scenarios from the development to the post-closure phase, to assess and compare their environmental impacts and to determine the importance of the land-use impact category. The potential impacts for each scenario were evaluated using the IMPACT 2002+ LCIA method. The results of the performed LCA indicate that for mine development and operation, scenarios where tailings are partly used as backfill for underground stopes appear to lead to larger impacts in 11 of the 14 midpoint categories since the backfill plant operation consumes a greater amount of material and energy. For a site closure period of 2 years, the CCBE option creates the greatest impacts, since it requires much more effort than the other techniques. The results for the post-closure phase have been analysed separately since they have a larger uncertainty. They appear to modify the comparative assessment results. The various results presented in the paper show the importance of taking land-use impacts into account. 相似文献
178.
Including adaptation costs and climate change damages in evaluating post-2012 burden-sharing regimes
Andries F. Hof Michel G. J. den Elzen Detlef P. van Vuuren 《Mitigation and Adaptation Strategies for Global Change》2010,15(1):19-40
Many studies have been published to evaluate the consequences of different post-2012 emission allocation regimes on regional
mitigation costs. This paper goes one step further and evaluates not only mitigation costs, but also adaptation costs and
climate change damages. Three post-2012 emission allocation regimes (Contraction & Convergence, Multistage and Common but
differentiated convergence) and two climate targets (2°C and 3°C above the pre-industrial level) are considered. This explorative
analysis shows that including these other cost categories could lead to different perspectives on the outcomes of allocation
regimes. Up to 2050, the poorest regions have negative mitigation costs under all allocation regimes considered, as they benefit
from emission trading. However, these regions also suffer from the most severe climate impacts. As such, the financial flows
due to emission trading from developed to developing countries created under these allocation regimes could also be interpreted
as compensation of climate change damages and adaptation costs. In the longer run, the sum of climate change damages, adaptation
costs and mitigation costs are the highest in the poorest regions of Sub-Saharan Africa and South Asia, for both climate targets
and practically all emission allocation regimes. 相似文献
179.
Significance of Bottom-Fishing Disturbance 总被引:4,自引:0,他引:4
Michel J. Kaiser 《Conservation biology》1998,12(6):1230-1235
180.
Emilie Farcy Thierry Burgeot Hansy Haberkorn Michel Auffret Laurent Lagadic Jean-Pierre Allenou Hélène Budzinski Nicolas Mazzella Romain Pete Micheline Heydorff Dominique Menard Florence Mondeguer Thierry Caquet 《Environmental science and pollution research international》2013,20(2):630-650
Estuarine areas represent complex and highly changing environments at the interface between freshwater and marine aquatic ecosystems. Therefore, the aquatic organisms living in estuaries have to face highly variable environmental conditions. The aim of this work was to study the influence of environmental changes from either natural or anthropogenic origins on the physiological responses of Mytilus edulis. Mussels were collected in the Vilaine estuary during early summer because this season represents a critical period of active reproduction in mussels and of increased anthropogenic inputs from agricultural and boating activities into the estuary. The physiological status of the mussel M. edulis was evaluated through measurements of a suite of biomarkers related to: oxidative stress (catalase, malondialdehyde), detoxication (benzopyrene hydroxylase, carboxylesterase), neurotoxicity (acetylcholinesterase), reproductive cycle (vitelline, condition index, maturation stages), immunotoxicity (hemocyte concentration, granulocyte percentage, phagocytosis, reactive oxygen species production, oxidative burst), and general physiological stress (lysosomal stability). A selection of relevant organic contaminant (pesticides, (polycyclic aromatic hydrocarbons, polychlorobiphenyls) was measured as well as environmental parameters (water temperature, salinity, total suspended solids, turbidity, chlorophyll a, pheopigments) and mussel phycotoxin contamination. Two locations differently exposed to the plume of the Vilaine River were compared. Both temporal and inter-site variations of these biomarkers were studied. Our results show that reproduction cycle and environmental parameters such as temperature, organic ontaminants, and algal blooms could strongly influence the biomarker responses. These observations highlight the necessity to conduct integrated environmental approaches in order to better understand the causes of biomarker variations. 相似文献