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41.
dos Santos Costa Rafaela Quadra Gabrielle Rabelo de Oliveira Souza Helena do Amaral Viviane Souza Navoni Julio Alejandro 《Environmental science and pollution research international》2021,28(31):41638-41650
Environmental Science and Pollution Research - Cyanobacteria are important for ecosystem functioning, but eutrophication may affect the surrounding biome by losing ecosystem services and/or through... 相似文献
42.
Jssica Luiza S. Silva Marcela Tomaz Pontes de Oliveira Oswaldo Cruz-Neto Marcelo Tabarelli Ariadna Valentina Lopes 《Ambio》2021,50(4):884
Urbanization has rapidly increased in recent decades and the negative effects on biodiversity have been widely reported. Urban green areas can contribute to improving human well-being, maintaining biodiversity, and ecosystem services (e.g. pollination). Here we examine the evolution of studies on plant–pollinator interactions in urban ecosystems worldwide, reviewing also research funding and policy actions. We documented a significant increase in the scientific production on the theme in recent years, especially in the temperate region; tropical urban ecosystems are still neglected. Plant–pollinator interactions are threatened by urbanization in complex ways, depending on the studied group (plant or pollinator [generalist or specialist]) and landscape characteristics. Several research opportunities emerge from our review. Research funding and policy actions to pollination/pollinator in urban ecosystems are still scarce and concentrated in developed countries/temperate regions. To make urban green spaces contribute to the maintenance of biodiversity and the provision of ecosystem services, transdisciplinary approaches (ecological–social–economic–cultural) are needed.Electronic supplementary materialThe online version of this article (10.1007/s13280-020-01410-z) contains supplementary material, which is available to authorized users. 相似文献
43.
Paloma de Almeida Rodrigues Rafaela Gomes Ferrari Luciano Neves dos Santos Carlos Adam Conte Junior 《环境科学学报(英文版)》2019,31(10):205-218
Mercury is an important pollutant, released into aquatic ecosystems both naturally and by anthropogenic action. This element is transferred to aquatic organisms in different ways, causing potential health risks. In addition, mercury can be accumulated by humans, especially through the consumption of contaminated food. This systematic review aims to present mercury pathways, the major routes through which this element reaches the aquatic environment and its transformations until becoming available to living animals, leading to bioaccumulation and biomagnification phenomena. The key biotic and abiotic factors affecting such processes, the impact of mercury on animal and human health and the issue of seafood consumption as a source of chronic mercury contamination are also addressed. A total of 101 articles were retrieved from a standardized search on three databases (PubMed, Emabse, and Web of Science), in addition to 28 other studies not found on these databases but considered fundamental to this review (totaling 129 articles). Both biotic and abiotic factors display fundamental importance in mediating mercurial dynamics, i.e., muscle tropism, and salinity, respectively. Consequently, mercurial contamination in aquatic environments affects animal health, especially the risk of extinction species and also on human health, with methylmercury the main mercury species responsible for acute and chronic symptomatology. 相似文献
44.
Melo Tatiane Medeiros Bottlinger Michael Schulz Elke Leandro Wilson Mozena de Aguiar Filho Adelmo Menezes Ok Yong Sik Rinklebe Jörg 《Environmental geochemistry and health》2018,40(1):557-558
Environmental Geochemistry and Health - Unfortunately, in the original publication of the article, Prof. Yong Sik Ok’s affiliation was incorrectly published. The author’s affiliation is... 相似文献
45.
Maia Luisa Cardoso dos Santos Grazielle Rocha Gurgel Leandro Vinícius Alves de Freitas Carvalho Cornélio 《Environmental science and pollution research international》2020,27(32):40135-40147
Environmental Science and Pollution Research - In this study, a new reuse process of the coarse fraction of basic oxygen furnace (BOF) sludge based on iron recovery by the ferrous sulfate... 相似文献
46.
Arakaki LN Augusto Filha VL Espínola JG da Fonseca MG de Oliveira SF Arakaki T Airoldi C 《Journal of environmental monitoring : JEM》2003,5(2):366-370
Silica gel surface has been modified in two reaction steps: (i) the silylating agent 3-mercaptopropyltrimetoxysilane was firstly immobilized to give a surface Sil-SH and (ii) this precursor incorporated an ethylene sulfide molecule to obtain the surface denoted Sil-SSH. This material was characterized by elemental analysis, IR spectroscopy, thermogravimetry, solid state 13C and 29Si NMR, and surface area measurement. These materials were employed as adsorbents for divalent heavy cations from aqueous solutions at room temperature and the isotherms were adjusted to a modified Langmuir equation. The maxima number of moles adsorbed were 1.0, 1.5, 1.6, 2.2, 2.4 and 3.3 mmol g(-1) for Co, Cu, Ni, Cd, Pb, and Hg, respectively. 相似文献
47.
Maria Helena Guimarães Annie McKee Maria Luísa Lima Lia Vasconcelos Tomasz Boski Tomaz Dentinho 《Journal of Environmental Planning and Management》2015,58(10):1827-1852
The definition of management actions in natural resource management requires the integration of all types of knowledge involved. An appropriate approach for such a challenge is the ideal of transdisciplinarity. A transdisciplinary process can be considered “consultative” when knowledge is simply gathered and collated, or “participatory” when knowledge integration is undertaken collectively. In this paper, we present a mixed mode procedure (i.e., using interviews, questionnaires, and group discussions) that empirically demonstrates the difference between consultative and participatory transdisciplinary processes. The mixed mode procedure is used for identifying the most relevant problems occurring in the coastal system of Praia da Vitória bay, Azores, Portugal. This mixed mode procedure is likely to be useful for other studies, because the results highlight the need to promote face-to-face interaction at the earliest opportunity, and because it allows an understanding to be gained of social learning processes, the influence of power, and participant behaviour during interaction with others. 相似文献
48.
Petra Quillfeldt Leandro Bugoni Rona A. R. McGill Juan F. Masello Robert W. Furness 《Marine Biology》2008,155(6):593-598
Stable isotopes of growing feathers and blood both represent assimilated diet, and both tissues are used to study the diet
and foraging distribution of marine and terrestrial birds. Although most studies have assumed that both tissues represent
a difference of one trophic level to diet, the enrichment factors of blood and feathers may differ, especially where endogenous
reserves are used as precursors during feather synthesis. In this study, we compare carbon and nitrogen stable isotopes of
blood and simultaneously growing feathers of five species of Procellariiformes, representing five genera, different geographical
regions and different life stages (chicks and adults). In all species, feathers were enriched in 15N and 13C compared with blood. Isotopic values of carbon and nitrogen were correlated in different tissues growing simultaneously
for most species analyzed, suggesting that mathematical corrections could be used to compare different tissues. Our results
imply that more care needs to be taken when comparing stable isotope signatures across studies assuming different tissues
are equivalent indicators of trophic ecology. 相似文献
49.
Alexandre da Silveira Gerzson Denise Cantarelli Machado Rafaela Radomski da Silva Cristhiane Alvim Valente Rogério Miranda Pagnoncelli 《Journal of Polymers and the Environment》2018,26(3):906-912
Developing a biomaterial that functions as a scaffold (osteoconductor), combined with a growth factor (osteoinductor), is of great interest for clinical application in oral and maxillofacial surgery. Growth hormone (GH) is a good candidate, as it is a major regulator of postnatal bone growth and remodeling. Pure PLGA and 70/30 PLGA/PCL matrices were prepared by the solvent evaporation method, combined or not with GH, and tested for toxicity and cell viability using an MTT assay with NIH3T3 mouse cells (ATCC). Cell toxicity was assessed at 24, 48, 72 h, and 7 days of biomaterial exposure to culture medium. All polymers had high cell viability rates. However, from 48 h onwards, the groups with GH-polymer combinations had better results than the polymer groups without association with GH when compared to the control group. At 7 days of culture, only the pure PLGA matrix showed a significant difference from the control group. These results may suggest a preference of cells for the presence of GH in the biomaterial in culture medium, especially in the PLGA matrix. GH appeared to contribute to the increase in cell viability observed at some assessment time points, especially when combined with PLGA as compared to pure PLGA. 相似文献
50.
Renata Cristina Ferreira Bonomo Taline Amorim Santos Leandro Soares Santos Rafael da Costa Ilhéu Fontan Luciano Brito Rodrigues Ana Clarissa dos Santos Pires Cristiane Martins Veloso Olga Reinert Ramos Gandolfi Paulo Bonomo 《Journal of Polymers and the Environment》2018,26(2):508-517
Jackfruit starch based biodegradable films containing lysozyme were characterized for their antimicrobial activity, thickness, solubility, water vapor permeability and mechanical properties. The biodegradable films had good appearance and antimicrobial activity against Micrococcus lysodeikticus. The thickness of the biodegradable films were not affected by the variation in pH, but the addition of lysozyme increased the thickness, the thickest films being those with the highest lysozyme concentrations. The variation in pH of the filmogenic solutions affected the solubility of the biodegradable films, water solubility being greatest at pH 7.0 and with the highest lysozyme concentration. The permeability of the biodegradable films was increased by incorporating lysozyme. The lysozyme concentration and pH variation caused changes in the mechanical properties. The addition of 8% lysozyme increased the tensile strength and Young’s modulus for all the pH values studied. With respect to the release of antimicrobial activity, the diffusion of lysozyme was shown to follow Fickian transport mechanism. 相似文献