全文获取类型
收费全文 | 62篇 |
免费 | 3篇 |
专业分类
废物处理 | 3篇 |
环保管理 | 9篇 |
综合类 | 18篇 |
基础理论 | 10篇 |
污染及防治 | 16篇 |
评价与监测 | 7篇 |
社会与环境 | 2篇 |
出版年
2023年 | 1篇 |
2022年 | 3篇 |
2021年 | 1篇 |
2020年 | 1篇 |
2019年 | 1篇 |
2018年 | 2篇 |
2017年 | 1篇 |
2016年 | 4篇 |
2015年 | 4篇 |
2014年 | 2篇 |
2013年 | 6篇 |
2012年 | 3篇 |
2011年 | 3篇 |
2010年 | 4篇 |
2009年 | 2篇 |
2007年 | 2篇 |
2006年 | 2篇 |
2005年 | 2篇 |
2002年 | 1篇 |
2000年 | 1篇 |
1998年 | 2篇 |
1995年 | 1篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1981年 | 1篇 |
1971年 | 1篇 |
1969年 | 1篇 |
1966年 | 1篇 |
1960年 | 1篇 |
1959年 | 1篇 |
1958年 | 2篇 |
1953年 | 1篇 |
1943年 | 1篇 |
1942年 | 1篇 |
1940年 | 1篇 |
1939年 | 1篇 |
1938年 | 1篇 |
排序方式: 共有65条查询结果,搜索用时 46 毫秒
41.
Treatment of effluent from re‐refined lubricating oils by combined processes of coagulation,flocculation, and Fenton process
下载免费PDF全文
![点击此处可从《环境质量管理》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Lucas Pisoni da Silva Silvio Roberto Taffarel Fernanda Rosa da Silveira Fagner Tafarel Campos de Sá Luís Felipe Silva Oliveira 《环境质量管理》2018,27(4):135-141
This work examines the possibility and the potential application of physicochemical processes (coagulation and flocculation) and advanced oxidative processes (Fenton Process) in the treatment of effluents from the re‐refining of used lubricating oils. 相似文献
42.
Silvio Schueler Katharina Heinke Schlünzen 《Environmental Modeling and Assessment》2006,11(3):179-194
We present the extension and application of the mesoscale atmospheric meteorology model METRAS for dispersion of oak pollen.
We incorporated functions for pollen emission, pollen viability and pollen deposition into METRAS and simulated pollen dispersal
on a scale of up to 200 km. The basis of the simulations is a real landscape structure that includes topography, land use,
and the location and size of oak stands. We simulated the oak pollen dispersion of one single oak stand with an estimated
annual pollen production of 1 billion pollen grains/m2 forest surface on two exemplary days of the flowering season in 2000. Depending on the meteorological situation of the simulated
days, a pollen cloud with about 10 pollen/m3 may extend up to 30 km from the source. Downstream of the oak stand, approximately 1,000 pollen/m2 deposited up to a distance of 25 km, and lower amounts of pollen deposited up to 100 km away. These values of pollen concentration
and deposition lay within the range of published field studies. Overall, it is shown that mesoscale atmospheric models are
applicable to simulate pollen dispersal on the landscape level. 相似文献
43.
44.
45.
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
46.
Dal Bosco TC Sampaio SC Coelho SR Cosmann NJ Smanhotto A 《Journal of environmental science and health. Part. B》2012,47(6):485-494
The application of swine wastewater to the soil for agricultural purposes results in the addition of total and dissolved organic matter to the soil, which may interfere with the dynamics of pesticides in the soil. The objective of this study was to evaluate the effects of the application of total and dissolved organic matter from a biodigester and a treatment lagoon of swine wastewater in the adsorption and desorption of alachlor [2-chloro-2,6-diethyl-N(methoxymethyl acetamide)]. The assay was performed by the batch equilibrium method, and the results were fitted to the Freundlich model. The curve comparison test revealed a greater adsorption of alachlor in the soil treated with swine wastewater from the biodigester. The adsorption and desorption of alachlor increased in the soils where swine wastewater was added, and hysteresis was observed in all of the treatments. 相似文献
47.
José Luis Iriarte Silvio Pantoja Humberto E. González Gabriela Silva Hector Paves Pamela Labbé Lorena Rebolledo Murat Van Ardelan V. Häussermann 《Environmental monitoring and assessment》2013,185(6):5055-5070
Anthropogenic (aquaculture) changes in environment nutrient concentrations may affect phytoplankton (biomass and taxa composition) in marine coastal waters off the Chilean Patagonia. The effects of adding nitrate (NO3 ?) to natural phytoplankton assemblages were evaluated considering biomass, cell abundance, and taxonomic composition. Microcosm experiments were performed in the spring, summer, and winter in the Comau Fjord located in Subantarctic Patagonia. At the end of the experiments, NO3 ? decreased rapidly and was undetectable in treatments, indicating a strong NO3 ? deficiency associated with an exponential increase in Chl-a concentrations, particulate organic nitrogen, and carbon in these treatments. Moreover, given the depleted nitrate concentrations of the spring and summer experiments, the micro-phytoplankton taxa structure shifted from mixed diatom and dinoflagellate assemblages (Ceratium spp., Dinophysis spp., Coscinodiscus sp., Rhizosolenia pungens) to assemblages dominated by blooms of the classic chain-forming diatoms found in temperate and cold waters such as Chaetoceros spp., Skeletonema spp., and Thalassiosira spp. Thus, nitrogen sources (i.e., nitrate, ammonia) may influence phytoplankton abundance and biomass accumulation dynamics in the northern section of Patagonia. It also emphasizes the importance of diatom taxa in regards to the short-term response of phytoplankton to changing environmental nutrient conditions due to natural (decreasing freshwater stream flow) and anthropogenic (aquaculture) events. This situation may be one of the future scenarios in the Patagonian fjords, thus stressing the needs for active environmental monitoring and impact assessment. 相似文献
48.
Rodrigo Pereira Cavalcante Lucas da Rocha Sandim Danielle Bogo Antônio Marcos Jacques Barbosa Marly Eiko Osugi Matildes Blanco Silvio Cesar de Oliveira Maria de Fatima Cepa Matos Amilcar Machulek Jr Valdir Souza Ferreira 《Environmental science and pollution research international》2013,20(4):2352-2361
In the present study, selected advanced oxidation processes (AOPs)—namely, photo-Fenton (with Fe2+, Fe3+, and potassium ferrioxalate—FeOx—as iron sources), solar photo-Fenton, Fenton, and UV/H2O2—were investigated for degradation of the antineoplastic drug mitoxantrone (MTX), frequently used to treat metastatic breast cancer, skin cancer, and acute leukemia. The results showed that photo-Fenton processes employing Fe(III) and FeOx and the UV/H2O2 process were most efficient for mineralizing MTX, with 77, 82, and 90 % of total organic carbon removal, respectively. MTX probably forms a complex with Fe(III), as demonstrated by voltammetric and spectrophotometric measurements. Spectrophotometric titrations suggested that the complex has a 2:1 Fe3+:MTX stoichiometric ratio and a complexation constant (K) of 1.47 × 104 M–1, indicating high MTX affinity for Fe3+. Complexation partially inhibits the involvement of iron ions and hence the degradation of MTX during photo-Fenton. The UV/H2O2 process is usually slower than the photo-Fenton process, but, in this study, the UV/H2O2 process proved to be more efficient due to complexing of MTX with Fe(III). The drug exhibited no cytotoxicity against NIH/3T3 mouse embryonic fibroblast cells when oxidized by UV/H2O2 or by UV/H2O2/FeOx at the concentrations tested. 相似文献
49.
Jeanny?Richter Sophie?Helbing Silvio?Erler H.?Michael?G.?LattorffEmail author 《Behavioral ecology and sociobiology》2012,66(5):791-796
Social insects are prone to attack by parasites as they provide numerous resources of food and brood, homeostatic nest conditions
and a high density of individuals, enhancing the transmission of parasites. The defence of social insects might occur at different
levels, the individual and the group. Individual defence occurs in part via the innate immune system resulting in the expression
of antimicrobial substances. Group level defences, summarised as ‘social immunity’, represent a suite of behavioural and organisational
features. Here, all effects contributing to social immunity except for the social context were removed from bumblebee (Bombus terrestris) workers, kept either in groups or solitarily. The gene expression of six effector molecules of the immune system was monitored
in both groups and in controls from the same source colonies. The social treatment has a highly significant effect on immune
gene expression, with groups exhibiting higher levels of two antimicrobial peptides (AMPs) and two lysozymes. Phenoloxidase
is affected at the regulatory level, with a strong upregulation of its suppressor Spn27A in groups suggesting a trade-off
with antimicrobial activity. AMPs are strongly upregulated in groups, whereas lysozymes are strongly downregulated in solitary
treatments suggesting another trade-off. Clearly, social immunity impacts elements of individual immunity. 相似文献
50.
A school-based experiment was conducted in the Brazilian Amazon to examine the effects of passively received information versus active elaboration on the ‘perceptions’ of jaguars (Panthera onca) among students, and the effects of information communicated via illustrated book on those perceptions among student’s parents. Books distributed via school decreased fathers’ perceptions of social acceptance of jaguar killing, but the same books distributed via a conservation organization did not. This suggests that fathers were influenced not only by the information explicitly conveyed in the content of books, but also by the implicit message that jaguar conservation was socially supported. Elaboration alone produced more persistent effects than information alone, but some negative attitudes were reinforced. Information and elaboration combined created stronger and more enduring effects than either intervention alone. These findings are important in designing interventions for our coexistence with jaguars and other charismatic species worldwide. 相似文献