全文获取类型
收费全文 | 87篇 |
免费 | 5篇 |
国内免费 | 2篇 |
专业分类
安全科学 | 41篇 |
废物处理 | 1篇 |
环保管理 | 7篇 |
综合类 | 28篇 |
基础理论 | 8篇 |
污染及防治 | 3篇 |
评价与监测 | 2篇 |
社会与环境 | 1篇 |
灾害及防治 | 3篇 |
出版年
2023年 | 1篇 |
2022年 | 2篇 |
2020年 | 2篇 |
2019年 | 4篇 |
2018年 | 3篇 |
2017年 | 2篇 |
2016年 | 3篇 |
2015年 | 2篇 |
2014年 | 3篇 |
2013年 | 20篇 |
2012年 | 4篇 |
2011年 | 4篇 |
2010年 | 3篇 |
2009年 | 4篇 |
2008年 | 3篇 |
2007年 | 3篇 |
2006年 | 6篇 |
2005年 | 2篇 |
2004年 | 3篇 |
2003年 | 1篇 |
2002年 | 1篇 |
2001年 | 3篇 |
2000年 | 1篇 |
1999年 | 5篇 |
1998年 | 1篇 |
1996年 | 2篇 |
1989年 | 1篇 |
1987年 | 1篇 |
1986年 | 1篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1981年 | 1篇 |
排序方式: 共有94条查询结果,搜索用时 46 毫秒
81.
第三产业排污申报登记是环境保护行政主管部门掌握污染源情况的一项重要法律手段。应从立法上规定预前申报制度并授予环境监理人员现场处置权等,环境保护行政主管部门和工商行政管理部门应同止办证,联合年检,以提高申报登记率。 相似文献
82.
以某输气站为例,对输气站的SCADA控制系统在生产运行中存在的故障进行分类分析,针对各故障类别,探讨解决各部分故障的处理措施。最后阐明应根据故障产生的部位和相应的报警信息,从报警源头开始逐步检查分析,快速找到原因并进行处理及优化,从而保障系统的稳定运行和安全生产。 相似文献
83.
河流水质时间序列分析的自组织预测方法及应用 总被引:2,自引:1,他引:2
应用前苏联学者伊万年科基于生物控制论中的自组织原理提出的一种数据组合处理方法,有效地解决复杂非线性系统预测。以汾河某段的水污染时间序列监测数据为基础,建立了一个河流水质污染预测的自组织模型,其建模样本的拟合值和检验样本的预测值相对误差分别在3.1%和5.3%以内。结果表明,自组织模型能较好地描述水污染时间序列数据之间的非线性关系,适合复杂水环境污染系统的预测工作。 相似文献
84.
85.
Nerida Bewick 《International journal of occupational safety and ergonomics》2013,19(2):209-221
Nursing aides are particularly susceptible to manual handling injuries because they have the primary responsibility for heavy lifting. The aim of this study was to determine why a specific group of nursing aides have the highest manual handling injury rate in their hospital. The study investigated the adequacy of the manual handling training program, knowledge of manual handling, mechanical aid availability, and use of mechanical aids. Results indicated that the nursing aides’ manual handling knowledge was adequate but that they rarely used mechanical aids. This lack of use of aids was in part due to an over-reliance on their own strength and abilities. This may have been due to a lack of suitable mechanical aids on the wards or a lack of familiarity with the available aids. This study suggests that neither training alone nor the purchase of equipment alone is likely to resolve manual handling problems. 相似文献
86.
通过氰根在线监测仪在紫金山金矿废水排放系统中的应用实例,对在线监测仪使用过程中所遇到的常见问题进行分析,总结了使用在线监测仪的日常维护内容及常见故障的处理经验. 相似文献
87.
This study examines negative and positive infant handling behavior in 24 free-ranging yellow baboon infants (Papio cynocephalus) studied over a 5-year period in Mikumi National Park, Tanzania. We test predictions of the female reproductive competition hypothesis to explain patterns of infant handling behavior by adult females (excluding the infants mother) in relation to observed cases of infant mortality by age 3 months (25% of infants in this study). Results show that: (1) low-ranking infants received more negative infant handling than high-ranking infants; conversely high-ranking infants received more positive infant handling; (2) female kin engaged in higher levels of positive infant handling than did non-kin, whereas non-kin showed higher levels of negative infant handling; (3) rates of negative infant handling varied by season, with high levels at the onset of the rainy season; and (4) high level of negative infant handling was a significant predictor of infant mortality by age 3 months (infant rank and sex did not predict survival). We discuss how the occurrence and interpretation of infant handling behavior in the literature has likely been confused by different definitions of this behavior, as well as differences in the socio-ecological context in which this behavior occurs.Communicated by C. Nunn 相似文献
88.
提出基于GSM的可移动危险源处警系统总体方案,在技术实施中考虑现有的可行性通讯资源和低成本实现,采用GSM网络短信息通信,利用带有移动通讯装置和PC机的主站设备来实现。利用GSMAT指令控制收发短信息,并应用数据库对短信息进行管理。对可移动危险源体系、预警方法以及相关关键技术进行较为深入的分析和研究,并在VB环境下编程实现可移动危险源处警系统的基本功能以及通信控件的查询工作方式和事件驱动方式的过程。该研究成果对可移动危险源跟踪、定位、监控,降低可移动危险源的爆炸、泄漏,避免造成重大事故具有一定的实用价值。 相似文献
89.
Paul H. Whitfield James W. McKinley 《Journal of the American Water Resources Association》1981,17(3):381-386
The effect of storing samples prior to determination of particulate nitrogen and carbon concentrations were investigated. Freezing of water samples between collection and analysis has a substantial effect on the results obtained. Storage of samples at 5°C also affects the results, although the changes which occurred were generally less than for frozen samples. When the particulates were collected onto a filter immediately after sample collection and stored in that form until analysis only small changes in the results were observed. This suggests that samples for the determination of particulate nitrogen and carbon concentrations should be filtered immediately upon sample collection and the analysis performed as soon as possible. 相似文献
90.