全文获取类型
收费全文 | 155篇 |
免费 | 1篇 |
专业分类
安全科学 | 2篇 |
废物处理 | 8篇 |
环保管理 | 13篇 |
综合类 | 38篇 |
基础理论 | 25篇 |
污染及防治 | 53篇 |
评价与监测 | 8篇 |
社会与环境 | 9篇 |
出版年
2022年 | 8篇 |
2021年 | 2篇 |
2020年 | 2篇 |
2018年 | 7篇 |
2017年 | 8篇 |
2016年 | 10篇 |
2015年 | 5篇 |
2014年 | 11篇 |
2013年 | 12篇 |
2012年 | 15篇 |
2011年 | 14篇 |
2010年 | 12篇 |
2009年 | 4篇 |
2008年 | 7篇 |
2007年 | 12篇 |
2006年 | 6篇 |
2005年 | 6篇 |
2004年 | 2篇 |
2003年 | 1篇 |
2002年 | 3篇 |
2001年 | 1篇 |
1998年 | 1篇 |
1994年 | 3篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1989年 | 1篇 |
1981年 | 1篇 |
排序方式: 共有156条查询结果,搜索用时 15 毫秒
61.
62.
63.
64.
This paper deals with a key issue related to municipal waste incineration, which is the efficiency of energy recovery. A strong driver for improving the energy performances of waste-to-energy plants is the recent Waste Framework Directive (Directive 2008/98/EC of the European Parliament and of the Council of 19 November 2008 on waste and repealing certain Directives), which allows high efficiency installations to benefit from a status of “recovery” rather than “disposal”. The change in designation means a step up in the waste hierarchy, where the lowest level of priority is now restricted to landfilling and low efficiency wastes incineration. The so-called “R1 formula” reported in the Directive, which counts for both production of power and heat, is critically analyzed and correlated to the more scientific-based approach of exergy efficiency. The results obtained for waste-to-energy plants currently operating in Europe reveal some significant differences in their performance, mainly related to the average size and to the availability of a heat market (district heating). 相似文献
65.
Gabriel D. McNett Lucia H. Luan Reginald B. Cocroft 《Behavioral ecology and sociobiology》2010,64(12):2043-2051
Noise that masks communication signals can affect the evolution of signal form and decisions about when and where to communicate.
For the many invertebrates that communicate using plant-borne vibrations, wind is considered to be the major source of environmental
noise. However, the influence of wind-induced vibrations on signaling behavior has not been experimentally tested. We tested
the hypothesis that wind-induced noise influences signaling behavior in a plant-feeding insect (the treehopper, Enchenopa binotata ‘Ptelea’) in which mating is preceded by a vibrational duet between females and mate-searching males. We first characterized the
diel signaling patterns of males in the field to identify the wind conditions under which signaling typically takes place.
We then experimentally tested two predictions of the hypothesis: (1) that males use gap detection to initiate signaling during
relatively wind-free periods; and (2) that females respond less to signals given in the presence of wind-induced vibrations.
Both predictions were met, indicating that wind-induced noise is an important influence on the behavior of insects that use
plant-borne vibrations. 相似文献
66.
67.
Olea-Olea Selene Escolero Oscar Mahlknecht Jürgen Mona Jorge Ortega Lucia Beramendi-Orosco Laura Zamora-Martinez Olivia Tadeo-Leon Javier 《Environmental geochemistry and health》2022,44(7):2301-2323
Environmental Geochemistry and Health - The thermal mineral water of Peñón de los Baños spa (Mexico City) has been used for over 500 years starting in pre-Hispanic times and... 相似文献
68.
Iriti M Belli L Nali C Lorenzini G Gerosa G Faoro F 《Environmental pollution (Barking, Essex : 1987)》2006,141(2):275-282
The wild tomato species Lycopersicon pimpinellifolium (currant tomato) was exposed to different O3 concentration, both in controlled environment fumigation facilities and in open-top chambers, to assess its sensitivity and to verify its potential as a bioindicator plant. Plants appeared particularly sensitive to O3 at an early stage of growth, responding with typical chlorotic spots within 24 h after exposure to a single pulse of 50 ppb for 3 h, and differentiating peculiar symptoms, such as reddish necrotic stipples, bronzing and extensive necrosis, depending on O3 concentration. Histo-cytochemical investigations with 3,3'-diaminobenzidine, to localize H2O2, and Evans blue, to detect dead cells, suggested that currant tomato sensitivity to O3 could be due to a deficiency in the anti-oxidant pools. The combination of these stainings proved to be useful, either to predict visible symptoms, early before their appearance, and to validate leaf ozone injury. 相似文献
69.
Are two resources really better than one? Some unexpected results of the availability of substitutes
The possibility of exploiting multiple resources is usually regarded as positive from both the economic and the environmental point of view. However, resource switching may also lead to unsustainable growth and, ultimately, to an equilibrium condition which is worse than the one that could have been achieved with a single resource. We developed a dynamic model where users exploit multiple resources and have different levels of preference among them. In this setting, exploiting multiple resources leads to worse outcomes in both economic and ecological terms than the single resource case under a wide range of parameter configurations. Our arguments are illustrated using two empirical situations, namely oil drilling in the North Sea and whale hunting in the Antarctic. 相似文献
70.