井下运输安全性的灰色综合评判

以平顶山煤业（集团）公司一矿（简称平一矿）为例,运用灰色系统理论,对井下运输系统的安全性进行了灰色综合评判,指出了影响运输安全的人、机、环境各因素中存在的问题,并提出了相应的提高安全性的措施。     

浅析辽河流域水环境管理现状及改善措施

辽河流域是我国北方重要的河流型流域,水环境污染问题突出。文章从水环境管理体制、水污染控制方式、水生态安全管理、预警监控4个方面剖析了辽河流域水环境管理现状,并提出针对性的改善措施,对促进辽河流域水环境管理能力提高具有积极的实际意义。     

新形势下我国金融安全预警及安全策略

在日益融入金融全球化的新形势下 ,我国金融业存在严重安全隐患。这些隐患的形成原因既具有和其他开放发展中国家一致的共性特征 ,也和我国处于经济转型的特定历史阶段相关。笔者对我国新形势下金融安全问题进行了较为详细的分析 ,并结合历次国际金融危机 ,尤其是东亚金融危机的教训和我国的实际 ,提出了构建我国金融安全预警指标体系与预警机制以及相关配套措施 ,以维护我国金融安全。特别是创造性地提出了我国金融安全监测预警指标系统至少应包括 3个层次 ,即国家宏观经济运行指标、金融机构安全监测预警指标和货币安全监测预警指标 ,以及要从全方位、多层次采取措施。     

城市重大事故应急演习方法研究---演习目标及其评价准则

应急演习是城市开展重大事故应急准备过程的主要任务之一,应急演习目标是检查演习效果,评价应急组织、人员应急准备状态和能力的指标.本文介绍了可供选择的十八项演习目标和各项目标的评价准则,同时介绍了分组选择演习目标的方法.     

基于PLC的企业铁路道口安全控制系统研究

企业铁路是企业生产的重要组成部分,然而企业铁路道口的安全问题一直较为突出,主要是因为目前所用的道口安全控制系统在灵活性和可靠性方面难以协调一致.针对这种状况,提出了基于PCL的铁路道口安全控制系统,研究了PCL安全控制系统的实现方案,并用实例证明了它的科学性和可行性.     

Access XP数据库的安全性研究

在信息化时代来临、Internet高速发展的今天,信息资源的经济和社会价值越来越明显,而数据库系统所管理、存储的数据已成为各个部门宝贵的信息资源,所以其安全保密性是目前所迫切需要解决的问题。笔者从数据库的安全性、保密性的角度,详细地阐述了MicrosoftAccessXP数据库的安全机制;探讨了实现MicrosoftAccessXP数据库不同保护级别的各种方法;还讨论了共享级安全性和用户级安全性问题。     

Site security for chemical process industries

Chemical process industries such as oil refineries, fertiliser plants, petrochemical plants, etc., which handle hazardous chemicals, are potential targets for deliberate actions by terrorists, criminals and disgruntled employees. Security risks arising out of these threats are real and must be assessed to determine whether the security measures employed within the facility are adequate or need enhancement. The essential steps involved are threat analysis, vulnerability analysis, security countermeasures, and emergency response. Threat analysis involves the study of identifying sources, types of threats, and their likelihood. Vulnerability analysis identifies the weaknesses in a system that adversaries can exploit. Depending on the threat likelihood and vulnerabilities, various security countermeasures are suggested to improve the plant security. Appropriate emergency response measures that could mitigate the consequences of a successful attack and concepts of inherently safer processes in the light of process security are also discussed in the paper. It is recognised that serious terrorist threats exist to the transport system of hazardous chemicals (by road, rail cars, ships, pipelines, etc.). However, that is not a part of this study, which concentrates on process plants and hazardous materials within immovable boundaries. A case study of a fertiliser plant is used to show the application of ideas presented.     

Empirical research on diffusion behavior of leaked gas in the ground

Chemical plants and gas utilities own large underground pipelines to transport material such as combustible gas. For example, city gas utilities in Japan have about 230,000 km of pipelines, even if only the pipelines to deliver gas to their customers are considered. Any accidents involving such pipelines can lead to enormous human and physical damage, and their security is therefore a top-priority issue for utilities. For the safety management of underground pipelines, in addition to assessment of the long-term reliability of pipeline materials, it is extremely important to understand the diffusion behavior of gases in the ground, such as the diffusion range and time, in the case of leakage, and the impact on the surrounding area is a fundamental factor to be considered in the design and maintenance of safe facilities and for emergency response. Although many papers introduce the situations of gas diffusion in the atmosphere such as indoor and outdoor conditions, only fundamental surveys have been conducted on gas diffusion in the ground, and there have been few full-scale empirical studies. This study reports the results of the verification of the diffusion behavior with full-scale gas leakage experiments simulating real underground pipelines, as well as the outcomes of the applicability test of a numerical simulation model investigated and proposed based on the results. This technical knowledge regarding security will contribute to further improvement of safety in the industry.     

美国高校安全管理及启示

我国高校安全管理存在着没有执法权、防范措施薄弱、管理人员理念落后以及没有从业资格要求等问题。笔者通过对美国高校社会化的安全管理体制、现代化的安全防范措施、人性化的安全管理理念、专业化的安全管理队伍等特点的论述 ;提出公安机关在高校设驻派出所 (或警务站 ) ;政府对从事高校安全管理人员实行从业资格认定制度 ;同时 ,也提出高校建立技术防范系统 ,实行人性化管理的具体措施     

白菜腌制中硝酸盐及亚硝酸盐含量的变化研究

硝酸盐及亚硝酸盐都是对人体有害的物质。文章研究了白菜在腌制过程中硝酸盐及亚硝酸盐含量的动态变化,实验表明亚硝酸盐的形成与白菜的腌制时间、温度、腌制液盐浓度、糖浓度等因素有关;硝酸盐的积累是受白菜的品种以及外部因素比如肥料、光、水分、温度等综合影响,在腌制过程中部分硝酸盐与亚硝酸盐相互转化。实验结果:在12℃的温度下腌制30天以后食用白菜比较好,而且腌制白菜的食盐浓度在10%~15%之间,糖浓度在3%左右较佳。