全文获取类型
收费全文 | 139篇 |
免费 | 0篇 |
国内免费 | 2篇 |
专业分类
安全科学 | 48篇 |
废物处理 | 1篇 |
环保管理 | 22篇 |
综合类 | 38篇 |
基础理论 | 6篇 |
污染及防治 | 8篇 |
评价与监测 | 7篇 |
社会与环境 | 5篇 |
灾害及防治 | 6篇 |
出版年
2023年 | 1篇 |
2022年 | 2篇 |
2021年 | 2篇 |
2020年 | 3篇 |
2019年 | 2篇 |
2018年 | 2篇 |
2017年 | 3篇 |
2016年 | 3篇 |
2015年 | 1篇 |
2014年 | 5篇 |
2013年 | 5篇 |
2012年 | 3篇 |
2011年 | 11篇 |
2010年 | 7篇 |
2009年 | 8篇 |
2008年 | 5篇 |
2007年 | 4篇 |
2006年 | 6篇 |
2005年 | 3篇 |
2004年 | 6篇 |
2003年 | 8篇 |
2002年 | 3篇 |
2001年 | 9篇 |
2000年 | 8篇 |
1999年 | 6篇 |
1998年 | 3篇 |
1997年 | 2篇 |
1996年 | 7篇 |
1995年 | 4篇 |
1994年 | 3篇 |
1993年 | 2篇 |
1992年 | 2篇 |
1986年 | 1篇 |
1985年 | 1篇 |
排序方式: 共有141条查询结果,搜索用时 15 毫秒
91.
采用Building Exodus 4.0模拟软件,研究了某校园宿舍建筑火灾场景下的出口宽度,可用出口数目,可用疏散楼梯数目以及人员对出口的熟悉程度等对疏散的影响规律.结果表明,在出口宽度到达某一阈值前,所需疏散时间随其增加而减少,超过该阈值之后,继续增加宽度对所需疏散时间影响甚微;随着可用出口和疏散楼梯数目的增加,所需疏散时间逐渐减少;人员对出口越熟悉,所需疏散时间越短. 相似文献
92.
Xuejin Zhao Yayue Pan Chi Zhou Yong Chen Charlie C.L. Wang 《Journal of Manufacturing Processes》2013,15(4):432-443
In this paper a non-layer-based additive manufacturing (AM) process named computer numerically controlled (CNC) accumulation process is presented for applications such as plastic part repairing and modification. To facilitate the CNC accumulation process, a novel three-dimensional (3D) laser scanning system based on a micro-electro-mechanical system (MEMS) device is developed for in situ scanning of inserted components. The integration of the scanning system in the CNC accumulation process enables the building-around-inserts with little human efforts. A point processing method based on the algebraic point set surface (APSS) fitting and layered depth-normal image (LDNI) representation is developed for converting the scanning points into triangular meshes. The newly developed 3D scanning system is compact and has sufficient accuracy for the CNC accumulation process. Based on the constructed surface model, data processing operations including multi-axis tool path planning and motion control are also investigated. Multiple test cases are performed to illustrate the capability of the integrated CNC accumulation process on addressing the requirements of building-around-inserts. 相似文献
93.
94.
95.
基于模糊识别的建筑物火灾危险性评价方法 总被引:8,自引:7,他引:8
笔者以传统的经典统计和模糊统计为基础 ,依据建筑物火灾危险性的影响因素 ,应用模糊识别理论及系统安全方法 ,建立了建筑物火灾危险性的评价指标体系 ;并应用集值统计方法对各项指标权重进行了处理。该方法改变了过去统计给出一个固定值的做法 ,而给出一个区间值 ,解决了对专家给出的指标“大约是多少”这一概念的定量化。为了验证了评价模型的准确性 ,将该理论应用到某购物商场火灾危险性评价中 ,取得了满意效果 ,为建筑物防火设计以及安全管理提供了可行的依据。 相似文献
96.
民用建筑中的公共卫生安全问题研究 总被引:1,自引:0,他引:1
在对历史上所发生的几次传染病流行为进行分析的基础上 ,笔者认为 :传染病的流行 ,对人类的生存与发展会产生非常重要的影响 ;人一生中大部分时间是在室内度过 ,因而人类传染病的流行与建筑物及其环境有关 ;传染病流行的关键包括 3个要素 ,其中传染途径与建筑物的关系更为突出。通过对已有建筑物的考察 ,发现建筑物内水与空气的处理不当可能是传染病的重要传染途径 ,为此分析了成因 ,同时提出了处理传染途径的具体措施。 相似文献
97.
The growing concerns over the environmental impacts of buildings have led to increasing demands for more environmental friendly buildings and building materials. Hitherto, there are not any comprehensive studies that show the overall environmental impact profiles of building materials and building services components for buildings. This paper intends to bridge this gap by reporting overall lifecycle environmental profiles of buildings as well as the ranking orders of environmental impacts of all the building materials and building services materials and components for commercial buildings. Twenty-five commercial buildings in Hong Kong, which include three Grade A office buildings, four Grade B office buildings, one Grade C office buildings, four retail centers and three hotels, have been selected for our study. Based upon these collected samples, no statistical differences were found in the average lifecycle environmental impacts for different building types despite some minor variations were detected. Subsequently, 10 types of building materials and 10 types of building services components have been identified for their significant lifecycle environmental impacts on commercial buildings. Among all, concrete, reinforcement bar, copper power cables, and copper busbars were ranked to be the four most significant materials or components to the total lifecycle environmental impacts. These should form the major targets for improvements in environmental performance of commercial buildings. 相似文献
98.
建筑材料放射性的控制 总被引:2,自引:0,他引:2
通过对建筑材料放射性污染状况分析,指出建筑材料放射性与其生产原料来源直接相关;并与其生产工艺及建筑物高度和结构有关。 相似文献
99.
J. A. Adegunleye 《Journal of Environmental Planning and Management》1986,29(2):85-86
There are some experts who are dealing with research on locally made materials for building in the Ministry of Housing and Works in Nigeria. It has been discovered in the Ministry that lateriate clays can be fired and used for building even two‐storey buildings depending on the firing and the pressure (Ogunbamwo, 1975). The Ministry has constructed a block of bungalows of low‐cost housing units with mud at Ikoyi, off Kingsway Road. No one will know that these houses are mud houses if not at closer inspection. Unfortunately, no effort has been made to continue or improve on this laudable adventure in Nigeria. 相似文献
100.
Huali Yuan John C. Little Eva Marand Zhe Liu 《Atmospheric environment (Oxford, England : 1994)》2007,41(40):9300-9308
Structural insulated panels (SIPs) have significant environmental and energy advantages. However, the tight structure that results may cause degraded indoor air quality and the potential release of volatile organic compounds (VOCs) from these layered materials must be considered. A physically based model for predicting VOC emissions from multi-layer materials is described. Fugacity is used to eliminate the concentration discontinuities at the interface between layers. This avoids an obstacle associated with numerically simulating mass transfer in composite materials. The numerical model is verified for a double-layer system by comparing predicted concentrations to those obtained with a previously published analytical model. In addition, hexanal emissions from multi-layer SIPs are simulated to demonstrate the usefulness of the fugacity approach. Finally, the multi-layer model is used to investigate the impact that clay/polyurethane nanocomposite diffusion barriers can have on VOC emissions. Indoor gas-phase concentrations can be greatly reduced with a barrier layer on the surface, thereby minimizing the environmental impact of SIPs. 相似文献