全文获取类型
收费全文 | 259篇 |
免费 | 7篇 |
国内免费 | 2篇 |
专业分类
安全科学 | 5篇 |
废物处理 | 12篇 |
环保管理 | 31篇 |
综合类 | 70篇 |
基础理论 | 70篇 |
污染及防治 | 55篇 |
评价与监测 | 15篇 |
社会与环境 | 8篇 |
灾害及防治 | 2篇 |
出版年
2023年 | 7篇 |
2022年 | 1篇 |
2021年 | 6篇 |
2020年 | 8篇 |
2019年 | 6篇 |
2018年 | 8篇 |
2017年 | 12篇 |
2016年 | 12篇 |
2015年 | 20篇 |
2014年 | 17篇 |
2013年 | 16篇 |
2012年 | 15篇 |
2011年 | 23篇 |
2010年 | 17篇 |
2009年 | 19篇 |
2008年 | 12篇 |
2007年 | 12篇 |
2006年 | 14篇 |
2005年 | 5篇 |
2004年 | 7篇 |
2003年 | 5篇 |
2002年 | 8篇 |
2001年 | 3篇 |
2000年 | 6篇 |
1999年 | 1篇 |
1998年 | 1篇 |
1996年 | 2篇 |
1994年 | 1篇 |
1989年 | 1篇 |
1986年 | 1篇 |
1982年 | 1篇 |
1979年 | 1篇 |
排序方式: 共有268条查询结果,搜索用时 15 毫秒
71.
Steven G. Brown Nicole P. Hyslop Paul T. Roberts Michael C. McCarthy Frederick W. Lurmann 《Journal of the Air & Waste Management Association (1995)》2013,63(9):1267-1277
Abstract Air quality monitoring was conducted at a rural site with a tower in the middle of California’s San Joaquin Valley (SJV) and at elevated sites in the foothills and mountains surrounding the SJV for the California Regional PM10/M2.5 Air Quality Study. Measurements at the surface and on a tower at 90 m were collected in Angiola, CA, from ecember 2000 through February 2001 and included hourly black carbon (BC), particle counts from optical particle counters, nitric oxide, ozone, temperature, relative humidity, wind speed, and direction. Boundary site measurements were made primarily using 24-hr integrated particulate matter (PM) samples. These measurements were used to understand the vertical variations of PM and PM precursors, the effect of stratification in the winter on concentrations and chemistry aloft and at the surface, and the impact of aloft-versus-surface transport on PM concentrations. Vertical variations of concentrations differed among individual species. The stratification may be important to atmospheric chemistry processes, particularly nighttime nitrate formation aloft, because NO2 appeared to be oxidized by ozone in the stratified aloft layer. Additionally, increases in accumulation-mode particle concentrations in the aloft layer during a fine PM (PM2.5) episode corresponded with increases in aloft nitrate, demonstrating the likelihood of an aloft nighttime nitrate formation mechanism. Evidence of local transport at the surface and regional transport aloft was found; transport processes also varied among the species. The distribution of BC appeared to be regional, and BC was often uniformly mixed vertically. Overall, the combination of time-resolved tower and surface measurements provided important insight into PM stratification, formation, and transport. 相似文献
72.
Pasqualini S Tedeschini E Frenguelli G Wopfner N Ferreira F D'Amato G Ederli L 《Environmental pollution (Barking, Essex : 1987)》2011,159(10):2823-2830
Air pollution is frequently proposed as a cause of the increased incidence of allergy in industrialised countries. We investigated the impact of ozone (O3) on reactive oxygen species (ROS) and allergen content of ragweed pollen (Ambrosia artemisiifolia). Pollen was exposed to acute O3 fumigation, with analysis of pollen viability, ROS and nitric oxide (NO) content, activity of nicotinamide adenine dinucleotide phosphate (NAD[P]H) oxidase, and expression of major allergens. There was decreased pollen viability after O3 fumigation, which indicates damage to the pollen membrane system, although the ROS and NO contents were not changed or were only slightly induced, respectively. Ozone exposure induced a significant enhancement of the ROS-generating enzyme NAD(P)H oxidase. The expression of the allergen Amb a 1 was not affected by O3, determined from the mRNA levels of the major allergens. We conclude that O3 can increase ragweed pollen allergenicity through stimulation of ROS-generating NAD(P)H oxidase. 相似文献
73.
74.
Mathilde Lefebvre Fabienne Dufernez Ange-Line Bruel Marie Gonzales Bernard Aral Judith Saint-Onge Nadège Gigot Julie Desir Caroline Daelemans Frédérique Jossic Sébastien Schmitt Raphaele Mangione Fanny Pelluard Catherine Vincent-Delorme Jean-Marc Labaune Nicole Bigi Dominique D'Olne Anne-Lise Delezoide Annick Toutain Sophie Blesson Valérie Cormier-Daire Julien Thevenon Salima El Chehadeh Alice Masurel-Paulet Nicole Joyé Claude Vibert-Guigue Luc Rigonnot Thierry Rousseau Pierre Vabres Philippe Hervé Antonin Lamazière Jean-Baptiste Rivière Laurence Faivre Nicole Laurent Christel Thauvin-Robinet 《黑龙江环境通报》2015,35(7):675-684
75.
Nicole R. Sikula James W. Mancillas Igor Linkov John A. McDonagh 《The Environmentalist》2015,35(2):219-228
The US government has focused considerable attention on enhancing our society’s ability to protect critical systems and services from disruptive events. Over the past decade, federal agencies have bolstered their efforts to identify and minimize threats using traditional risk-based approaches such as continuity of operations and disaster risk reduction processes. However, these valuable risk identification and management tools are limited because they rely upon foreseeable factor analyses of steady-state systems with predictable hazard frequencies and severities. In assessing the capability of complex adaptive systems to cope with disruptions, an overemphasis upon engineering resilience through risk management and planning for what is predictable may cloud or detract from our efforts to better understand a system’s emergent capabilities to withstand disruptions that are unforeseeable. This article contends that augmenting traditional risk approaches through the incorporation of methodologies grounded in socio-ecological system (SES) resilience principles offers a potential avenue for improving our agencies’ abilities to assess and manage both known and unknown risks. We offer a notional rationale for broadening our examination of system vulnerabilities and present a conceptual model that combines engineering and SES resilience paradigms to facilitate the identification, assessment, and management of system vulnerabilities. The Military Installation Resilience Assessment model described herein applies risk and resilience principles to evaluate whole systems, focusing on interconnections and their functionality in facilitating response and adaptation. 相似文献
76.
Negri A Burns K Boyle S Brinkman D Webster N 《Environmental pollution (Barking, Essex : 1987)》2006,143(3):456-467
This study examined the concentrations of total hydrocarbons (THC), polychlorinated biphenyls (PCB), polyaromatic hydrocarbons (PAH), and trace metals (Cu, Zn, Cd, Pb, Hg and As) in marine sediments off Scott Base (NZ) and compared them with sediments near the highly polluted McMurdo Station (US) as well as less impacted sites including Turtle Rock and Cape Evans. The Antarctic mollusc, Laternula elliptica and three common sponge species were also analysed for trace metals. The mean THC concentration in sediments from Scott Base was 3 fold higher than the pristine site, Turtle Rock, but 10 fold lower than samples from McMurdo Station. McMurdo Station sediments also contained the highest concentrations of PAHs, PCBs and the trace metals, Cu, Zn, Pb, Cd and Hg. Copper was significantly higher in bivalves from McMurdo Station than other sites. Trace metal concentrations in sponges were generally consistent within sites but no spatial patterns were apparent. 相似文献
77.
78.
79.
Eliza Kluckow Jane Halliday Alice Poulton Anthea Lindquist Briohny Hutchinson Michael Bethune Leonard Bonacquisto Fabricio Da Silva Costa Lucy Gugasyan James Harraway Amanda Howden Abhijit Kulkarni Nicole Martin Richard McCoy Melody Menezes Debbie Nisbet Ricardo Palma-Dias Mark D. Pertile Zeffie Poulakis Lisa Hui 《黑龙江环境通报》2019,39(13):1254-1261
80.
The separate collection of waste, and especially of recyclables with specific collection systems, would not be possible without
the involvement of the users. Apart from the physical installations such as collection containers, collection points, etc.,
the motivation of the users is an essential component. Motivation can be reinforced through public relations work. In addition
to the underlying technical considerations, this paper describes the difference between communication in general and public
relations and specifically examines public involvement in recycling. Through the use of examples, we look at the targeted
users and typical media employed. Furthermore, we analyzes the development of public involvement. The examples show that public
relations for recycling strategies relies to a great extent on attitudes, habits, and access to the target group. Thus, standardized
procedures cannot be developed. For these reasons, public relation activities must be planned carefully and professionally
and include an analysis of the target group, choice of media, and verification of success. 相似文献