全文获取类型
收费全文 | 94篇 |
免费 | 9篇 |
国内免费 | 24篇 |
专业分类
安全科学 | 15篇 |
废物处理 | 11篇 |
环保管理 | 3篇 |
综合类 | 43篇 |
基础理论 | 1篇 |
污染及防治 | 15篇 |
评价与监测 | 2篇 |
社会与环境 | 3篇 |
灾害及防治 | 34篇 |
出版年
2023年 | 1篇 |
2022年 | 2篇 |
2021年 | 3篇 |
2020年 | 3篇 |
2019年 | 4篇 |
2018年 | 3篇 |
2016年 | 7篇 |
2015年 | 1篇 |
2014年 | 2篇 |
2013年 | 10篇 |
2012年 | 12篇 |
2011年 | 6篇 |
2010年 | 3篇 |
2009年 | 7篇 |
2007年 | 5篇 |
2006年 | 7篇 |
2005年 | 12篇 |
2004年 | 5篇 |
2003年 | 5篇 |
2002年 | 5篇 |
2001年 | 2篇 |
2000年 | 2篇 |
1999年 | 3篇 |
1998年 | 4篇 |
1997年 | 3篇 |
1996年 | 1篇 |
1995年 | 3篇 |
1994年 | 2篇 |
1992年 | 2篇 |
1984年 | 1篇 |
1982年 | 1篇 |
排序方式: 共有127条查询结果,搜索用时 218 毫秒
51.
52.
南半球气候变暖对西北太平洋热带气旋的影响 总被引:7,自引:0,他引:7
在分析南半球地面气温序列和西北太平洋热带气旋序列的基础上,讨论了南半球气候变暖对西北太平洋上热带气旋的影响和可能的机制。结果表明,随着南半球气候变暖,西北太平洋上热带气旋的频数减少,强度减弱;同时,随着南半球气候变暖,西北太平洋上强台风的频数将减少,最大中心风速将减弱。一种可能的机制是由于从南半球侵入西北太平洋的冷空气随着南半球气候的变暖而减弱。 相似文献
53.
Jeffery SE 《Disasters》1982,6(1):38-43
This paper argues that natural disasters are not a category of events which can be separated from the broader Issues of development, since economic change can create vulnerability to natural disaster. The analysis of case studies from the Dominican Republic shows how the development of large scale commercialized agricultural production has created such vulnerability by reducing or restricting the resource base of certain sectors of the population. It b suggested that the vulnerable state of a population should be considered as much a cause of natural disaster as the extreme physical phenomena Involved. Therefore there Is a need both for a broader framework for analysis of disasters and for strategies to reduce such vulnerability to be an Integral part of long term development planning. 相似文献
54.
为解决电焊烟尘气流无组织排放对焊工健康和环境造成的严重影响,得出旋幕式排风罩的最佳设计参数及气流组织形式,选择GAMBIT软件建立排风罩的物理模型并进行网格划分,选用雷诺平均N-S方程(RANS)、Realizableκ-ε湍流模型及DPM离散相模型,利用Fluent计算流体力学软件对旋幕式排风罩捕集效率的相关参数进行模拟计算。结果表明:旋幕式排风罩能有效控制电焊烟尘气流的扩散;喷口角度对涡流产生的大小、位置和强度影响最大;最佳设计参数为有效吸程1. 5 m,喷口角度80°,喷口宽度14 mm;在该设计参数条件下,当罩面吸口风速为0. 3 m/s、喷口风速为1. 1m/s时,捕集效率达到最高,为98. 28%。 相似文献
55.
56.
57.
旋风分离器分离段表状探讨 总被引:3,自引:0,他引:3
传统的旋风分离器,由于其分离段形成的内旋气流太混乱,而且剧烈湍动,致使在沉降段已和气体分离的尘粒在分离段中又改变运行方向,重新与气体混在一起,因而除尘效果不理想,为了找到改善分离效果的办法,本文对尘粒的运行过程作数学分析,并对提高除尘效率的旋风分离器分离段形状进行了探讨。 相似文献
58.
59.
This paper investigates the impacts of Tropical Cyclone Winston (2016) on rural Indo-Fijians and their response to the devastation. Studies have previously examined how rural communities in Pacific Island countries respond to severe climatic events, arguing that traditional knowledge of the climate, together with indigenous techniques, contribute substantially to recovery from a disaster. Strong communal bonds have also been identified as an influencing factor. Disaster risk reduction frameworks often assume the availability of such knowledge and capital. Yet, little research has been done on how minority groups with limited access to such knowledge and capital cope with disaster-related damage. The current study shows that rural Indo-Fijians responded to the consequences of Tropical Cyclone Winston differently to indigenous Fijians, owing to relatively limited access to traditional awareness of the climate, communal labour sharing, and intra- and/or inter-community networks. The findings point to the necessity to implement a more inclusive disaster risk reduction framework. 相似文献
60.
《Environmental Hazards》2013,12(4):263-277
Knowledge about natural hazard management has increased significantly since Gilbert White's seminal research in 1945, yet people are still badly affected by natural hazards. A key question remains in natural hazards research: why, when all the conditions for effective disaster risk reduction are in place, do some people not take action to reduce their risk of harm? Through a questionnaire-based study we investigated the motivating factors that led residents of the Cayman Islands to prepare for annual tropical cyclones (hurricanes). Factors that increase the likelihood of individuals preparing for hurricanes are: previous experience of major storms, having linking networks and ties, having a child under the age of 15 in the home, and residency status—expatriate residents are less likely to prepare. Factors that appear to prevent adaptive behaviour include: living close to or adjacent to the coast, recent migration to the islands, and living in rented accommodation. The findings of the survey confirm that even within societies that are well prepared for tropical cyclones, there are still sub-groups who do not engage with the preparedness process. In the case of the Cayman Islands, new migrants are the most vulnerable to tropical cyclones as they tend to fall into the demographic groups least likely to prepare for cyclones, live in locations with high levels of exposure to cyclone impacts, and interact mostly with other expatriates with no previous experience of cyclone impacts. As climate change promises to bring an increasing intensity of tropical cyclones, these findings have relevance for all islands which draw on migrant workers to support economic growth. 相似文献