索风营水电站Dr2号危岩体破坏模式分析

在专门性工程地质勘察的基础上,系统分析了Dr2危岩体的边界条件、形成机理及破坏模式,并简要介绍了目前所采取的处理措施。     

关于农业污染纠纷综合处理的思考

揭示了农业污染纠纷的内涵,提出了处理农业污染纠纷的４个“支撑点”,即运用农业技术先行界定,运用监测数据科学鉴证;运用因果关系逻辑推定,强化环境管理,疏通综合处理渠道等。     

化学事故应急处置中环保对策的研究

文章分析化学事故中环境污染问题的形成,阐述了化学事故本身对环境的污染和处置不当造成的环境污染,提出我国消防工作在化学事故处置环保方面存在的不足之处,为消防人员处置化学事故做好环保工作提出建议和对策。     

实验室废液的处理

实验室分析过程产生的废液虽然量少但是直接排放会污染环境,有害人身安全和健康,所以必须对其进行有效处理后再行排放。     

Pulling force prediction using neural networks

Purpose. In ergonomics and human factors investigations, pulling force (PF) estimation has usually been achieved using various types of biomechanical models, and independent approximation of PF was done with the help of upper extremity joints. Recently, multiple regression methods have gained importance for task-relevant inputs in predicting PF. Artificial neural networks (ANNs) also play a vital role in fitting the data; however, their use in work-related biomechanics and ergonomics is inadequate. Therefore, the current research aimed to accomplish comparative investigation of ANN and regression models by assessing their capacity to predict PF values. Methods. Multipositional PF data were acquired from 200 subjects at three different handle heights and body locations. ANN and regression models were formed using a random sample of three subsets (75% training, 15% selection, 10% validation) for proving the outcomes. Results. The comparison of ANN and regression models shows that the predictions of ANN models had a profoundly explained variance and lower root mean square difference values for the PF data at three handle heights. Conclusions. These outcomes advise that ANNs offer a precise and robust substitute for regression methods, and should be considered a useful method in biomechanics and ergonomics task assessments.     

电子设备的可靠性试验

可靠性试验是可靠性工程最基本的内容和最重要的工作项目。该文就电子设备可靠性试验的技术基础、可靠性试验的特点和分类、对可靠性试验数据的分析和处理方法、电子设备的可靠性试验方案设计作了一些介绍。     

Evaluation and Optimization of Handle Design Parameters of a Grass Trimming Machine

The grass trimming machine is a widely used agricultural machine for cutting grass by the roadside and in other areas in Malaysia. Hand-arm vibration (HAV) syndrome is very common among workers operating power tools and performing similar work for extended periods. Grass trimming involves the use of a motorized cutter spinning at high speed, resulting in high levels of HAV among its operators. The existing D-shape handle causes HAV-related stress and operational load in operators. This research proposes a new design of a handle of the grass trimming machine. When this new design was compared with the old one, it was found that the new handle resulted in 18% lower HAV. To find the lowest HAV, 3 critical parameters of the new handle (length, angle and material of the cap of the handle) were optimized using the Taguchi quality tool. Appropriately selected parameters of the new handle significantly reduced the occurrence of HAV among grass trimmers.     

抚顺市固体废物安全处置方案探讨

采用申报登记和系数核定的方法。对固体废物产生、利用、处置、排放等情况进行全面调查。在综合分析的基础上，依据国家固体废物管理相关规定，确定工业固体废物、生活垃圾、危险废物处理存在的差距和主要环境问题，分析固体废物对环境安全构成威胁的事故隐患，提出固体废物资源化、减量化、无害化和环境安全建设方案。     

大兴矿煤泥水净化处理与循环利用

根据大兴矿煤泥水的水质，结合混凝沉淀实验，选择了低分子无机凝剂和高分子聚凝剂两种药剂。工艺上采取了两次加药混凝沉淀的方式，实现了煤泥水闭路循环利用。     

连云港市首次污染源普查数据处理及二次开发应用的研究

通过开展连云港市污染源普查工作,全面掌握了各类污染源情况,包括工业源、生活源、农业源及集中式污染治理设施等,采集到大量的污染源普查数据。在实践中,我们采用先进的信息管理技术对污染源普查数据进行处理后利用G IS技术中具有支持空间数据的获取、管理、处理、分析、建模和显示及解决复杂的管理问题的功能开发连云港市污染源电子地图。这些污染源普查数据的二次开发应用,对新时期环保工作、编制环保规划、优化经济结构、制定环境政策、加强环境监管、实施污染源动态管理、建设环境友好型社会、维护群众环境权益等工作起到了十分重要的意义。