全文获取类型
收费全文 | 236篇 |
免费 | 4篇 |
专业分类
安全科学 | 4篇 |
废物处理 | 6篇 |
环保管理 | 12篇 |
综合类 | 50篇 |
基础理论 | 44篇 |
环境理论 | 1篇 |
污染及防治 | 94篇 |
评价与监测 | 13篇 |
社会与环境 | 15篇 |
灾害及防治 | 1篇 |
出版年
2023年 | 5篇 |
2022年 | 11篇 |
2021年 | 6篇 |
2020年 | 4篇 |
2019年 | 9篇 |
2018年 | 9篇 |
2017年 | 10篇 |
2016年 | 16篇 |
2015年 | 8篇 |
2014年 | 9篇 |
2013年 | 15篇 |
2012年 | 11篇 |
2011年 | 20篇 |
2010年 | 4篇 |
2009年 | 12篇 |
2008年 | 21篇 |
2007年 | 13篇 |
2006年 | 10篇 |
2005年 | 10篇 |
2004年 | 7篇 |
2003年 | 12篇 |
2002年 | 11篇 |
2001年 | 2篇 |
2000年 | 2篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1991年 | 1篇 |
排序方式: 共有240条查询结果,搜索用时 62 毫秒
51.
52.
53.
Elsa T.A. Berthet Cécile Barnaud Nathalie Girard Julie Labatut Guillaume Martin 《Journal of Environmental Planning and Management》2016,59(2):280-301
Facing contemporary environmental crisis implies fostering agroecological innovations that take into account local ecological regulations and rely on multiple stakeholders' innovation capacities. This paper draws on two fields of literature that remain unconnected so far: participatory approaches and design sciences. It proposes an analysis grid to support a reflexive analysis of cases of implementation of three participatory design methods: ComMod (Companion Modelling for concerted management of natural resources), Forage Rummy (simulation-based board game for designing farming systems) and KCP (collective design workshops to foster innovation). This analysis highlights key features of the methods in view of agroecological innovation challenges, focusing on knowledge management and organisation for exploration. 相似文献
54.
Basic research on remediation of polluted sediment by leaching has, to date, been carried out exclusively with suspended material. For economic reasons, only solid-bed leaching is applicable to large-scale processes. Abiotic and microbial solid-bed leaching were comparatively studied in a percolator system using ripened and therefore permeable heavy metal polluted river sediment. In the case of abiotic leaching, sulfuric acid was supplied to the sediment by circulating water; the lower the pH of the percolating water, the higher the percolation flow, and the lower the solid-bed height was, the faster the heavy metals were solubilized. However, the pH and percolation flow are subjected to restrictions: strongly acidic conditions result in dissolution of mineral components, and the percolation flow must not exceed the bed permeability. And a high solid bed is an economic requirement. In the case of bioleaching, elemental sulfur added to the sediment was oxidized to sulfuric acid within the package which, in turn, solubilized the heavy metals. Here, the percolation flow and the solid-bed height did not affect the rate of metal solubilization. Solid-bed leaching on a larger scale will thus be much more efficient applying bioleaching with sulfur as the leaching agent than abiotic leaching with sulfuric acid. 相似文献
55.
Nicolas Gruchy Eleonore Blondeel Nathalie Le Meur Géraldine Joly-Hélas Pascal Chambon Marianne Till Martine Herbaux Adeline Vigouroux-Castera Aurélie Coussement James Lespinasse Florence Amblard Mélanie Jimenez Pocquet Camille Lebel-Roy Frédérique Carré-Pigeon Elisabeth Flori Francine Mugneret Sylvie Jaillard Catherine Yardin Radu Harbuz Marie-Agnès Collonge-Rame Philippe Vago Mylène Valduga Nathalie Leporrier François Vialard 《黑龙江环境通报》2016,36(6):523-529
56.
The size and coloration of some body characters seem to influence mate choice in many species. Most animal colours are either structural or based on melanin or carotenoid pigments. It has recently been suggested that carotenoid-based or structural coloration may be a condition-dependent trait, whereas melanin-based coloration is not; a difference that may be highly relevant when studying the evolution of multiple mating preferences. We tested this hypothesis in the great tit (Parus major). The size of the melanin breast band was not correlated to nutritional condition as estimated by the rate of tail growth (ptilochronology), controlling for locality, age, sex, year and season effects. However, the correlation was significant for the hue of yellow breast (carotenoid-based coloration), and the slopes of the regressions of the two pigments to growth bars differed significantly. These results suggest that the expression of the two traits may be regulated by different mechanisms. 相似文献
57.
Bénédicte Rulleau Nathalie Dumax Anne Rozan 《Journal of Environmental Planning and Management》2017,60(2):309-327
A choice experiment was used to analyse the preferences of residents neighbouring the Erstein polder (Alsace, France) for the different services that it provides. The heterogeneous nature of these preferences was shown through the use of a latent class model. Whilst the population as a whole values the improvement in water quality and the contribution, even partial, to flood protection, preferences differ when it comes to biodiversity and public access to the site. This study shows the potential conflicts between the different uses of the Erstein polder. These conflicts represent different communication themes for the site managers. 相似文献
58.
Nathalie Colbach 《Environmental science and pollution research international》2009,16(3):348-360
59.
Degradation of acetic acid with sulfate radical generated by persulfate ions photolysis 总被引:13,自引:0,他引:13
The photolysis of was studied for the removal of acetic acid in aqueous solution and compared with the H2O2/UV system. The radicals generated from the UV irradiation of ions yield a greater mineralization of acetic acid than the OH radicals. Acetic acid is oxidized by radicals without significant formation of intermediate by-products. Increasing system pH results in the formation of OH radicals from radicals. Maximum acetic acid degradation occurred at pH 5. The results suggest that above this pH, competitive reactions with the carbon mineralized inhibit the reaction of the solute with and also OH radicals. Scavenging effects of two naturally occurring ions were tested; in contrast to ions, the presence of Cl− ions enhances the efficiency of the /UV process towards the acetate removal. It is attributed to the formation of the Cl radical and its great reactivity towards acetate. 相似文献
60.
Spatial concentration distribution of a chemical in an indoor environment is an important factor in the evaluation of chemical nuisances. However, straightforward techniques for the determination of this distribution are not very common and usually limited in their application. Sorptive sampling using polydimethylsiloxane-coated stir bars and the combination of active and diffusive sampling were shown to allow uncomplicated spatial concentration profiling of multiple compounds in an indoor environment. The validity of the approach was demonstrated in the analysis of the spatial concentration distribution of a pyrethroid insecticide in a common bedroom. The relative concentrations of allethrin and piperonyl butoxide were profiled throughout the room upon the application of an insecticide vaporizer. 相似文献