全文获取类型
收费全文 | 105篇 |
免费 | 1篇 |
国内免费 | 1篇 |
专业分类
安全科学 | 5篇 |
废物处理 | 2篇 |
环保管理 | 8篇 |
综合类 | 9篇 |
基础理论 | 34篇 |
污染及防治 | 35篇 |
评价与监测 | 10篇 |
社会与环境 | 4篇 |
出版年
2022年 | 3篇 |
2021年 | 3篇 |
2019年 | 1篇 |
2018年 | 2篇 |
2017年 | 1篇 |
2016年 | 8篇 |
2015年 | 4篇 |
2014年 | 3篇 |
2013年 | 11篇 |
2012年 | 5篇 |
2011年 | 9篇 |
2010年 | 11篇 |
2009年 | 9篇 |
2008年 | 10篇 |
2007年 | 3篇 |
2006年 | 5篇 |
2005年 | 5篇 |
2004年 | 3篇 |
2003年 | 3篇 |
2002年 | 5篇 |
1998年 | 1篇 |
1996年 | 2篇 |
排序方式: 共有107条查询结果,搜索用时 203 毫秒
91.
Josué Israel García-López Francisco Zavala-García Emilio Olivares-Sáenz Guillermo Niño-Medina Norma Angélica Ruiz-Torres 《毒物与环境化学》2013,95(5-7):560-572
AbstractThe effects of suspensions of zinc oxide nanoparticles at concentrations between 100 and 500?mg L?1 on germination of Capsicum chinense seeds and vigor of plants were evaluated using a randomized complete design with four replications, resulting in increased germination and improved development of lengths of plumule and radicle. The activities of peroxidase, catalase and ascorbate peroxidase were determined, showing that at all concentrations the activities of the former two enzymes were increased, whereas the activity of the latter was reduced at 500?mg L?1. Pretreatments of seeds with ZnO nanoparticles can improve germination and development of seedlings and the activities of antioxidant enzymes. 相似文献
92.
Ecological modelling has not yet received from basic “hard” sciences, like conventional physics and chemistry, an adequate conceptual support. Mechanistic simulation techniques are very far from achieving a satisfactory understanding of ecosystem dynamics. 相似文献
93.
Multimethod,multistate Bayesian hierarchical modeling approach for use in regional monitoring of wolves 下载免费PDF全文
José Jiménez Emilio J. García Luis Llaneza Vicente Palacios Luis Mariano González Francisco García‐Domínguez Jaime Múñoz‐Igualada José Vicente López‐Bao 《Conservation biology》2016,30(4):883-893
In many cases, the first step in large‐carnivore management is to obtain objective, reliable, and cost‐effective estimates of population parameters through procedures that are reproducible over time. However, monitoring predators over large areas is difficult, and the data have a high level of uncertainty. We devised a practical multimethod and multistate modeling approach based on Bayesian hierarchical‐site‐occupancy models that combined multiple survey methods to estimate different population states for use in monitoring large predators at a regional scale. We used wolves (Canis lupus) as our model species and generated reliable estimates of the number of sites with wolf reproduction (presence of pups). We used 2 wolf data sets from Spain (Western Galicia in 2013 and Asturias in 2004) to test the approach. Based on howling surveys, the naïve estimation (i.e., estimate based only on observations) of the number of sites with reproduction was 9 and 25 sites in Western Galicia and Asturias, respectively. Our model showed 33.4 (SD 9.6) and 34.4 (3.9) sites with wolf reproduction, respectively. The number of occupied sites with wolf reproduction was 0.67 (SD 0.19) and 0.76 (0.11), respectively. This approach can be used to design more cost‐effective monitoring programs (i.e., to define the sampling effort needed per site). Our approach should inspire well‐coordinated surveys across multiple administrative borders and populations and lead to improved decision making for management of large carnivores on a landscape level. The use of this Bayesian framework provides a simple way to visualize the degree of uncertainty around population‐parameter estimates and thus provides managers and stakeholders an intuitive approach to interpreting monitoring results. Our approach can be widely applied to large spatial scales in wildlife monitoring where detection probabilities differ between population states and where several methods are being used to estimate different population parameters. 相似文献
94.
Rufino Francesco Busico Gianluigi Cuoco Emilio Muscariello Lidia Calabrese Sergio Tedesco Dario 《Environmental geochemistry and health》2022,44(7):2083-2099
Environmental Geochemistry and Health - An integrated approach using chemical and microbial indicators has been tested in two different sites of the Campania Plain (Southern Italy) with different... 相似文献
95.
Sacchi Elisa Cuoco Emilio Oster Harald Paolucci Vittorio Tedesco Dario Viaroli Stefano 《Environmental geochemistry and health》2022,44(7):1-28
Environmental Geochemistry and Health - The Riardo basin hosts groundwater exploited for the production of high quality, naturally sparkling, bottled water (e.g., Ferrarelle water), and circulating... 相似文献
96.
Ecosystem Decay of Amazonian Forest Fragments: a 22-Year Investigation 总被引:49,自引:1,他引:49
97.
Nogales R Cifuentes C Benítez E 《Journal of environmental science and health. Part. B》2005,40(4):659-673
In Mediterranean countries, millions of tons of wastes from viticulture and winery industries are produced every year. This study describes the ability of the earthworm Eisenia andrei to compost different winery wastes (spent grape marc, vinasse biosolids, lees cakes, and vine shoots) into valuable agricultural products. The evolution of earthworm biomass and enzyme activities was tracked for 16 weeks of vermicomposting, on a laboratory scale. Increases in earthworm biomass for all winery wastes proved lower than in manure. Changes in hydrolytic enzymes and overall microbial activities during the vermicomposting process indicated the biodegradation of the winery wastes. Vermicomposting improved the agronomic value of the winery wastes by reducing the C:N ratio, conductivity and phytotoxicity, while increasing the humic materials, nutrient contents, and pH in all cases. Thus, winery wastes show potential as raw substrates in vermicomposting, although further research is needed to evaluate the feasibility of such wastes in large-scale vermicomposting systems. 相似文献
98.
Emilio D’Ugo Stefania Marcheggiani Ilaria Fioramonti Roberto Giuseppetti Roberto Spurio Karim Helmi Delphine Guillebault Linda K. Medlin Ivan Simeonovski Bas Boots Ulrich Breitenbach Latife Koker Meric Albay Laura Mancini 《Food and environmental virology》2016,8(3):206-214
The transmission of water-borne pathogens typically occurs by a faecal–oral route, through inhalation of aerosols, or by direct or indirect contact with contaminated water. Previous molecular-based studies have identified viral particles of zoonotic and human nature in surface waters. Contaminated water can lead to human health issues, and the development of rapid methods for the detection of pathogenic microorganisms is a valuable tool for the prevention of their spread. The aims of this work were to determine the presence and identity of representative human pathogenic enteric viruses in water samples from six European countries by quantitative polymerase chain reaction (q-PCR) and to develop two quantitative PCR methods for Adenovirus 41 and Mammalian Orthoreoviruses. A 2-year survey showed that Norovirus, Mammalian Orthoreovirus and Adenoviruses were the most frequently identified enteric viruses in the sampled surface waters. Although it was not possible to establish viability and infectivity of the viruses considered, the detectable presence of pathogenic viruses may represent a potential risk for human health. The methodology developed may aid in rapid detection of these pathogens for monitoring quality of surface waters. 相似文献
99.
Dengsheng Lu Xiaofeng Xu Hanqin Tian Emilio Moran Maosheng Zhao Steven Running 《Environmental management》2010,46(3):404-410
Net primary productivity (NPP) is one of the major ecosystem products on which human societies rely heavily. However, rapid
urban sprawl and its associated dense population and economic conditions have generated great pressure on natural resources,
food security, and environments. It is valuable to understand how urban expansion and associated demographic and economic
conditions affect ecosystem functions. This research conducted a case study in Southeastern China to examine the impacts of
urban expansion and demographic and economic conditions on NPP. The data sources used in research include human settlement
developed through a combination of MODIS, DMSP-OLS and Landsat ETM+ images, the annual NPP from MODIS, and the population
and gross domestic product (GDP) from the 2000 census data. Multiple regression analysis and nonlinear regression analysis
were used to examine the relationships of NPP with settlement, population and GDP. This research indicates that settlement,
population and GDP have strongly negative correlation with NPP in Southeastern China, but the outcomes were nonlinear when
population or GDP reached certain thresholds. 相似文献
100.
Silvia Maggioni Emilio Benfenati Claudio Colosio Angelo Moretto Ott Roots Stavroula Tasiopoulou 《Journal of environmental science and health. Part. B》2013,48(4):407-414
This paper reports the results obtained from the data collected within the European Commission funded project SAFEFOODNET regarding the state of the art in the control of chemical food contaminants in twelve European New Member States and one Associated Candidate Country (Turkey). Information has been gathered on institutions involved in food chemical contamination control, types of contaminants and matrices analyzed, procedures for data quality assurance, purposes of the analyses and accessibility of data in the participant countries. The resulting picture points out the general availability of adequate capabilities for the analysis of food contaminants in the laboratories in charge of control and the performance of the analysis of a large variety of chemicals (persistent organic pollutants, polycyclic aromatic hydrocarbons, pesticides, mycotoxins, heavy metals, radionuclides) in almost each country with few exceptions (dioxins in Bulgaria, Turkey, Latvia, persistent organic pollutants in Lithuania and Malta, polycyclic aromatic hydrocarbons in Malta). The application of validated analytical methods and the process of laboratory accreditation are partially fulfilled within the investigated countries, but still forthcoming for some countries, as in Romania, Turkey and Malta. Information collected on food controls is only partially available online and the language used is prevalently local and English to a lesser extent. 相似文献