全文获取类型
收费全文 | 62篇 |
免费 | 3篇 |
专业分类
废物处理 | 3篇 |
环保管理 | 9篇 |
综合类 | 18篇 |
基础理论 | 10篇 |
污染及防治 | 16篇 |
评价与监测 | 7篇 |
社会与环境 | 2篇 |
出版年
2023年 | 1篇 |
2022年 | 3篇 |
2021年 | 1篇 |
2020年 | 1篇 |
2019年 | 1篇 |
2018年 | 2篇 |
2017年 | 1篇 |
2016年 | 4篇 |
2015年 | 4篇 |
2014年 | 2篇 |
2013年 | 6篇 |
2012年 | 3篇 |
2011年 | 3篇 |
2010年 | 4篇 |
2009年 | 2篇 |
2007年 | 2篇 |
2006年 | 2篇 |
2005年 | 2篇 |
2002年 | 1篇 |
2000年 | 1篇 |
1998年 | 2篇 |
1995年 | 1篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1981年 | 1篇 |
1971年 | 1篇 |
1969年 | 1篇 |
1966年 | 1篇 |
1960年 | 1篇 |
1959年 | 1篇 |
1958年 | 2篇 |
1953年 | 1篇 |
1943年 | 1篇 |
1942年 | 1篇 |
1940年 | 1篇 |
1939年 | 1篇 |
1938年 | 1篇 |
排序方式: 共有65条查询结果,搜索用时 31 毫秒
21.
Bogdan I. Gherman Andreas Denner Otilia Bobiş Daniel S. Dezmirean Liviu A. Mărghitaş Helge Schlüns Robin F. A. Moritz Silvio Erler 《Behavioral ecology and sociobiology》2014,68(11):1777-1784
Honeybees, Apis mellifera, have several prophylactic disease defense strategies, including the foraging of antibiotic, antifungal, and antiviral compounds of plant products. Hence, honey and pollen contain many compounds that prevent fungal and bacterial growth and inhibit viral replication. Since these compounds are also fed to the larvae by nurse bees, they play a central role for colony health inside the hive. Here, we show that honeybee nurse bees, infected with the microsporidian gut parasite Nosema ceranae, show different preferences for various types of honeys in a simultaneous choice test. Infected workers preferred honeys with a higher antibiotic activity that reduced the microsporidian infection after the consumption of the honey. Since nurse bees feed not only the larvae but also other colony members, this behavior might be a highly adaptive form of therapeutic medication at both the individual and the colony level. 相似文献
22.
23.
24.
25.
26.
Porto Rafael Silveira Pinheiro Rafael Silvio Bonilha Rath Susanne 《Environmental science and pollution research international》2021,28(42):59040-59049
Environmental Science and Pollution Research - Benzimidazoles are anthelmintics frequently used in sheep farming due to the high susceptibility of these animals to parasitic diseases. Sheep excreta... 相似文献
27.
Júnior Silvio Vaz Gravina Érica Gonçalves Moraes Maria Carolina Blassioli Zaioncz Soraia Valadares Leonardo Fonseca Borges Miguel Magalhães Washington Luiz Esteves 《Environmental science and pollution research international》2022,29(48):72670-72682
Environmental Science and Pollution Research - The control of pests in agricultural systems is currently based on the widespread use of pesticides that efficiently control pests but have negative... 相似文献
28.
The European WFD (2000/60/EC) requires the assessment of the ecological quality status of water bodies, and gives great importance to the biological components of the ecosystem. A multimetric, fuzzy-based index for the evaluation of environmental quality (FINE: Fuzzy INdex of Ecosystem integrity) has been developed. The FINE index was calculated at 7 sites in the Sacca di Goro and the Valli di Comacchio (Adriatic Sea), where water and sedimentary chemical data were available for the years 2004 and 2005. A significant positive correlation was found between FINE values and dissolved oxygen, while significant negative correlations were observed between FINE values and transparency, nitrogen and phosphorous in the water column, and heavy metals and PCB in the sediments. 相似文献
29.
30.
A System Dynamics Model for the Environmental Management of the Sepetiba Bay Watershed, Brazil 总被引:2,自引:0,他引:2
In the recent past, the Sepetiba Bay watershed, located in the Rio de Janeiro State, Brazil has experienced rapid industrial
development and population growth, as well as an increase in water pollution and environmental degradation. To analyze the
complex interrelationships among the agents affecting the Sepetibza Bay environment, a system dynamics model was developed.
The model builds on extensive studies conducted for the watershed, and simulates different hypotheses of economic growth and
of demographic expansion. Thus, it can be used as a decision support tool for the identification of investment priorities
and policy analyses under various scenarios. In order to provide a comprehensive approach to the environmental management
of the Sepetiba Bay watershed, the model had to consider only the most relevant aspects of the behavior and the key interactions
among agents operating in the watershed. In this article, the model’s structure is presented together with some of its main
results. 相似文献