全文获取类型
收费全文 | 207篇 |
免费 | 4篇 |
国内免费 | 2篇 |
专业分类
安全科学 | 6篇 |
环保管理 | 50篇 |
综合类 | 32篇 |
基础理论 | 50篇 |
污染及防治 | 49篇 |
评价与监测 | 16篇 |
社会与环境 | 7篇 |
灾害及防治 | 3篇 |
出版年
2023年 | 4篇 |
2022年 | 1篇 |
2021年 | 4篇 |
2020年 | 3篇 |
2019年 | 1篇 |
2018年 | 4篇 |
2017年 | 7篇 |
2016年 | 5篇 |
2015年 | 9篇 |
2014年 | 10篇 |
2013年 | 25篇 |
2012年 | 10篇 |
2011年 | 15篇 |
2010年 | 5篇 |
2009年 | 7篇 |
2008年 | 12篇 |
2007年 | 13篇 |
2006年 | 12篇 |
2005年 | 9篇 |
2004年 | 3篇 |
2003年 | 6篇 |
2002年 | 9篇 |
2001年 | 5篇 |
2000年 | 3篇 |
1999年 | 1篇 |
1998年 | 4篇 |
1997年 | 1篇 |
1996年 | 1篇 |
1995年 | 1篇 |
1994年 | 3篇 |
1993年 | 2篇 |
1992年 | 1篇 |
1989年 | 1篇 |
1988年 | 2篇 |
1987年 | 1篇 |
1985年 | 3篇 |
1983年 | 2篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1980年 | 2篇 |
1969年 | 2篇 |
1967年 | 1篇 |
1933年 | 1篇 |
排序方式: 共有213条查询结果,搜索用时 775 毫秒
141.
Aryal Jeetendra Prakash Sapkota Tek Bahadur Krupnik Timothy J. Rahut Dil Bahadur Jat Mangi Lal Stirling Clare M. 《Environmental science and pollution research international》2021,28(37):51480-51496
Environmental Science and Pollution Research - Fertilizer, though one of the most essential inputs for increasing agricultural production, is a leading cause of nitrous oxide emissions from... 相似文献
142.
Talia Speaker Stephanie O'Donnell George Wittemyer Brett Bruyere Colby Loucks Anthony Dancer Marianne Carter Eric Fegraus Jonathan Palmer Ellie Warren Jennifer Solomon 《Conservation biology》2022,36(3):e13871
Conservation technology holds the potential to vastly increase conservationists’ ability to understand and address critical environmental challenges, but systemic constraints appear to hamper its development and adoption. Understanding of these constraints and opportunities for advancement remains limited. We conducted a global online survey of 248 conservation technology users and developers to identify perceptions of existing tools’ current performance and potential impact, user and developer constraints, and key opportunities for growth. We also conducted focus groups with 45 leading experts to triangulate findings. The technologies with the highest perceived potential were machine learning and computer vision, eDNA and genomics, and networked sensors. A total of 95%, 94%, and 92% respondents, respectively, rated them as very helpful or game changers. The most pressing challenges affecting the field as a whole were competition for limited funding, duplication of efforts, and inadequate capacity building. A total of 76%, 67%, and 55% respondents, respectively, identified these as primary concerns. The key opportunities for growth identified in focus groups were increasing collaboration and information sharing, improving the interoperability of tools, and enhancing capacity for data analyses at scale. Some constraints appeared to disproportionately affect marginalized groups. Respondents in countries with developing economies were more likely to report being constrained by upfront costs, maintenance costs, and development funding (p = 0.048, odds ratio [OR] = 2.78; p = 0.005, OR = 4.23; p = 0.024, OR = 4.26), and female respondents were more likely to report being constrained by development funding and perceived technical skills (p = 0.027, OR = 3.98; p = 0.048, OR = 2.33). To our knowledge, this is the first attempt to formally capture the perspectives and needs of the global conservation technology community, providing foundational data that can serve as a benchmark to measure progress. We see tremendous potential for this community to further the vision they define, in which collaboration trumps competition; solutions are open, accessible, and interoperable; and user-friendly processing tools empower the rapid translation of data into conservation action. Article impact statement: Addressing financing, coordination, and capacity-building constraints is critical to the development and adoption of conservation technology. 相似文献
143.
Aryal Jeetendra Prakash Sapkota Tek Bahadur Rahut Dil Bahadur Krupnik Timothy J. Shahrin Sumona Jat M. L. Stirling Clare M. 《Environmental management》2020,66(1):105-120
Environmental Management - Rural households in South Asia’s coastal deltas face numerous livelihood challenges, including risks posed by climatic variability and extreme weather events. This... 相似文献
144.
David Gibbs∗ James Longhurst† Clare Braithwaite‡ 《Journal of Environmental Planning and Management》1996,39(3):317-332
The recent growth of interest in sustainable development has led to the incorporation of the concept into policy making at a variety of scales. In all cases particular emphasis is placed upon the local scale as the focus for the implementation of policy and initiatives and especially upon local authorities as the major contributor to this process. There has been little assessment, however, of the extent to which local authorities either can, or are, undertaking such initiatives. This paper examines: the potential role that local authorities can play in integrating economic development and the environment; the forms of response and initiatives that are currently in place, drawing upon survey evidence from urban local authorities in England and Wales; and some of the limits to local authority action. 相似文献
145.
Malpuech syndrome (MS) is a rare autosomal recessive syndrome featuring pre- and post-natal growth deficiency, mental retardation, facial dysmorphism, cleft lip and palate (typically midline or bilateral), caudal appendage, renal malformations and male genital abnormalities. A prenatal diagnosis of MS was made in this fetus based on the family history and a combination of conventional and 3D prenatal ultrasound findings. The family were consanguineous with an affected first child. Prenatal ultrasound in the second pregnancy demonstrated bilateral cleft lip and palate in association with intrauterine growth retardation on serial prenatal ultrasound scans. Dysmorphic facial features and a small penis consistent with the diagnosis were confirmed on 3D scanning. Post-natal examination of the neonate confirmed the diagnosis of MS. To the best of our knowledge, this is the first prenatal diagnosis of this syndrome. Copyright © 2006 John Wiley & Sons, Ltd. 相似文献
146.
147.
W. M. Dugger Jr. Jane Koukol R. L. Palmer 《Journal of the Air & Waste Management Association (1995)》2013,63(9):467-471
Photochemically produced oxidants in the atmosphere cause injury to plants primarily through inhibition of basic metabolic processes. Plants vary in their response to the oxidants and this variation must be dependent in part on the variation in metabolic activity with age or environmental conditions for growth, to a large degree not understood. Data are presented in this paper to show: (1) The changes in permeability of leaf tissue to exogenous substrate and in catabolic utilization of this substrate after exposure of plants to ozone but before visible symptoms appear; (2) The change in leaf carbohydrates as a result of exposure to ozone; (3) The protective effect of red light (700 mμ) during exposure of bean plants to peroxyacetyl nitrate (PAN); (4) The correlation of sulfhydryl (SH) content in bean leaf tissue with age of plants and light regime; and (5) Effect of light regime and age of plants on incorporation of C14 from C14-PAN by bean leaf tissue. 相似文献
148.
149.
150.
Uta Krogmann Clinton J. Andrews Mookhan Kim Gregory Kiss Clare Miflin 《Journal of the American Water Resources Association》2007,43(6):1414-1423
Abstract: Building water mass balances were performed for one 150‐story conventional building scenario for comparison with three scenarios of the 2020 Tower, a hypothetical 150‐story high‐rise building with on‐site wastewater treatment and reuse. To ensure that the assumptions for the hypothetical building are appropriate, a one‐year water balance was also conducted of the existing 27‐story Solaire building that partly closes the water/wastewater loop, meters major water flows and implements low‐flow/water conserving fixtures and appliances. For comparison, a conventional 27‐story building scenario with the same low‐flow/water conserving fixtures as the Solaire but no water reuse was also assessed. The mean daily indoor water use in the Solaire was 246 l/(d cap) which exceeds mean daily water use found in the literature. The water mass balances showed that an urban high‐rise building needs another source of water even when potable reuse water is produced because of losses during water end use and treatment (i.e., evaporation, water in treatment residues). Therefore, water conservation (i.e., modification of human behavior) and water efficiency improvements (i.e., equipment, appliances and fixtures) are important major factors in reducing the municipal water needed in all scenarios. 相似文献