全文获取类型
收费全文 | 754篇 |
免费 | 16篇 |
国内免费 | 9篇 |
专业分类
安全科学 | 28篇 |
废物处理 | 31篇 |
环保管理 | 177篇 |
综合类 | 87篇 |
基础理论 | 173篇 |
污染及防治 | 174篇 |
评价与监测 | 51篇 |
社会与环境 | 52篇 |
灾害及防治 | 6篇 |
出版年
2022年 | 9篇 |
2021年 | 14篇 |
2020年 | 12篇 |
2019年 | 11篇 |
2018年 | 19篇 |
2017年 | 21篇 |
2016年 | 18篇 |
2015年 | 20篇 |
2014年 | 16篇 |
2013年 | 84篇 |
2012年 | 30篇 |
2011年 | 43篇 |
2010年 | 24篇 |
2009年 | 25篇 |
2008年 | 41篇 |
2007年 | 49篇 |
2006年 | 36篇 |
2005年 | 19篇 |
2004年 | 19篇 |
2003年 | 40篇 |
2002年 | 26篇 |
2001年 | 10篇 |
2000年 | 13篇 |
1999年 | 5篇 |
1998年 | 10篇 |
1997年 | 9篇 |
1996年 | 9篇 |
1995年 | 8篇 |
1994年 | 18篇 |
1993年 | 11篇 |
1992年 | 4篇 |
1991年 | 6篇 |
1990年 | 10篇 |
1989年 | 4篇 |
1988年 | 5篇 |
1986年 | 6篇 |
1985年 | 9篇 |
1984年 | 7篇 |
1983年 | 12篇 |
1982年 | 11篇 |
1981年 | 7篇 |
1980年 | 7篇 |
1979年 | 6篇 |
1978年 | 5篇 |
1977年 | 4篇 |
1976年 | 1篇 |
1974年 | 2篇 |
1973年 | 1篇 |
1972年 | 1篇 |
1971年 | 2篇 |
排序方式: 共有779条查询结果,搜索用时 31 毫秒
771.
Warmer does not have to mean sicker: temperature and predators can jointly drive timing of epidemics
Ecologists and epidemiologists worry that global warming will increase disease prevalence. These fears arise because several direct and indirect mechanisms link warming to disease, and because parasite outbreaks are increasing in many taxa. However, this outcome is not a foregone conclusion, as physiological and community-interaction-based mechanisms may inhibit epidemics at warmer temperatures. Here, we explore this thermal-community-ecology-based mechanism, centering on fish predators that selectively prey upon Daphnia infected with a fungal parasite. We used an interplay between a simple model built around this system's biology and laboratory experiments designed to parameterize the model. Through this data-model interaction, we found that a given density of predators can inhibit epidemics as temperatures rise when thermal physiology of the predator scales more steeply than that of the host. This case is met in our fish-Daphnia-fungus system. Furthermore, the combination of steeply scaling parasite physiology and predation-induced mortality can inhibit epidemics at lower temperatures. This effect may terminate fungal epidemics of Daphnia as lakes cool in autumn. Thus, predation and physiology could constrain epidemics to intermediate temperatures (a pattern that we see in our system). More generally, these results accentuate the possibility that warmer temperatures might actually enhance predator control of parasites. 相似文献
772.
Shafi S Sweetman A Hough RL Smith R Rosevear A Pollard SJ 《Environmental pollution (Barking, Essex : 1987)》2006,144(3):1013-1023
A fugacity approach was evaluated to reconcile loadings of vinyl chloride (chloroethene), benzene, 1,3-butadiene and trichloroethylene in waste with concentrations observed in landfill gas monitoring studies. An evaluative environment derived from fictitious but realistic properties such as volume, composition, and temperature, constructed with data from the Brogborough landfill (UK) test cells was used to test a fugacity approach to generating the source term for use in landfill gas risk assessment models (e.g. GasSim). SOILVE, a dynamic Level II model adapted here for landfills, showed greatest utility for benzene and 1,3-butadiene, modelled under anaerobic conditions over a 10 year simulation. Modelled concentrations of these components (95,300 microg m(-3); 43 microg m(-3)) fell within measured ranges observed in gas from landfills (24,300-180,000 microg m(-3); 20-70 microg m(-3)). This study highlights the need (i) for representative and time-referenced biotransformation data; (ii) to evaluate the partitioning characteristics of organic matter within waste systems and (iii) for a better understanding of the role that gas extraction rate (flux) plays in producing trace component concentrations in landfill gas. 相似文献
773.
Jenkins TF Hewitt AD Grant CL Thiboutot S Ampleman G Walsh ME Ranney TA Ramsey CA Palazzo AJ Pennington JC 《Chemosphere》2006,63(8):1280-1290
Environmental investigations have been conducted at 23 military firing ranges in the United States and Canada. The specific training facilities most frequently evaluated were hand grenade, antitank rocket, and artillery ranges. Energetic compounds (explosives and propellants) were determined and linked to the type of munition used and the major mechanisms of deposition. 相似文献
774.
It has long been suggested that environmental assessment has the potential to contribute to sustainable development through
mechanisms above and beyond informing design and consent decisions, and while theories have been proposed to explain how this
might occur, few have been subjected to rigorous empirical validation. This research advances the theoretical debate by building
a rich empirical understanding of environmental assessment’s practical outcomes, from which its potential to contribute to
sustainable development can be gauged. Three case study environmental assessment processes in England were investigated using
a combination of data generated from content analysis, in-depth interviews, and a questionnaire survey. Four categories of
outcomes are delineated based on the research data: learning outcomes; governance outcomes; attitudinal and value changes;
and developmental outcomes. The data provide a robust critique of mainstream theory, with its focus on design and consent
decisions. The article concludes with an examination of the consequences of the context-specific nature of environmental assessment
practices in terms of developing theory and focusing future research. 相似文献
775.
William A. Mitch 《环境科学学报(英文版)》2017,29(12):1-2
<正>Since the 1990s,there has been a strong interest across the environmental science community in characterizing the threats to human health posed by emerging contaminants.Much of this research has focused on pharmaceuticals and personal care products in Europe and North America.However,the range of chemicals evaluated has expanded dramatically over the past three decades.This expansion raises a key 相似文献
776.
Jeremy Russell-Smith Glenn James Alan Maratja Dhamarrandji Ted Gondarra Danny Burton Bevlyne Sithole Otto Bulmaniya Campion Hmalan Hunter-Xenie Ricky Archer Kamaljit K. Sangha Andrew C. Edwards 《Ambio》2022,51(11):2240
Northern Australia is prone to recurring severe natural hazards, especially frequent cyclones, flooding, and extensive wildfires. The region is sparsely populated (≪ 0.5 persons km−2), with Indigenous (Aboriginal) residents comprising 14% of the population, and typically the majority in remote regions. Despite national policy committed to addressing emergency management (EM) in vulnerable Indigenous communities, implementation remains unfunded. We synthesise participatory intercultural research conducted over seven years exploring core challenges, opportunities and potential solutions towards developing effective EM partnerships. Similar EM engagement and empowerment issues face First Nations and local communities in many international settings. In search of solutions, we explore developing effective partnership arrangements between EM agencies and culturally diverse Indigenous communities. Observing that government already provides substantial investment in cultural and natural resource management programmes conducted by over 150 Indigenous Ranger Groups (IRGs) nationally, we demonstrate that expansion of IRG roles to incorporate EM community engagement and service delivery can provide multiple cost-effective community and business development benefits for many remote communities. 相似文献
777.
Progress in carbon dioxide separation and capture: A review 总被引:20,自引:2,他引:18
Hongqun Yang Zhenghe Xu Maohong Fan Rajender Gupt Rachid B Slimane Alan E Blan Ian Wright 《环境科学学报(英文版)》2008,20(1):14-27
This article reviews the progress made in CO2 separation and capture research and engineering. Various technologies, such as absorption, adsorption, and membrane separation, are thoroughly discussed. New concepts such as chemical-looping combustion and hydrate-based separation are also introduced briefly. Future directions are suggested. Sequestration methods, such as forestation, ocean fertilization and mineral carbonation techniques are also covered. Underground injection and direct ocean dump are not covered. 相似文献
778.
Ford Scott Alan Persson Joel Jepsen Martin Rudbeck Mertz Ole 《Regional Environmental Change》2022,22(4):1-14
Regional Environmental Change - Climate change has severe impacts on the livelihoods of West-African communities with the floods of the late 2000s and early 2010s serving as factual evidence.... 相似文献
779.
Davis Lodinikki Lemoy Aragão Walessa Alana Bragança de Oliveira Lopes Géssica Eiró Luciana Guimaraes Freire Alexandre Rodrigues Prado Felippe Bevilacqua Rossi Ana Cláudia da Silva Cruz Allan das Graças Fernandes Dantas Kelly Albuquerque Alan Rodrigo Leal Paz Simone Patricia Aranha Angélica Rômulo Simões Lima Rafael Rodrigues 《Environmental science and pollution research international》2022,29(10):13930-13940
Environmental Science and Pollution Research - There are a few data relating to the effects of lead (Pb) exposure on the alveolar bone, which has very distinct morphophysiological characteristics... 相似文献