某矿破碎系统的电气改造设计中注重安全措施

本文介绍了在丰山铜矿选矿破碎系统电气改造设计中,注重安全,在系统功能、控制原理、设备构成、工程实施和操作维护等方面的措施和实际效果。     

中国安全防灾文化建设初探

安全文化是随着社会的繁荣、城乡的发展及科技进步，从工业文明、社会文化衍生而来。本文从国内外事故灾害频发的特点出发，探讨国内提出安全防灾文化建设的概念，并着重分析了拓展安全防灾文化建设的大思路。     

铁路安全文化建设初探

针对铁路的特点和铁路安全工作的难度以及近两年进行安全基础整顿和建设的经验表明，安全工作仍难以有序可控的不断改进，通过对安全文化的认识和探讨，提出要取得铁路运输安全工作的突破，必须全面加速安全文化建设。加速安全文化建设的前提是加快体制建设，其关键是加快安全机制建设，其保证是加快安全法制建设，其核心是加快干部、工人队伍的安全文化素质提高，其重要方法是加强对全社会的安全知识教育。     

机械加工中毛刺的影响及其控制

系统地论述了机械加工中产生的毛刺给切削加工和安全生产带来的危害，揭示出影响毛刺生成及变化的主要因素。结合车削、刨削、铣削和钻削等加工开发出若干抑制或减小毛刺的新技术、新工艺和新方法，为消除安全生产的隐患、提高机械加工质量和生产效率奠定了坚实的基础     

浅谈油气生产中的现场安全管理

油气生产中的各种不安全因素大多来源于现场作业。生产现场是安全管理的控制点。运用安全管理和安全系统工程的一些理论方法，可以提高生产中人的安全意识，减少现场作业中的事故隐患，达到预防事故的目的     

硐室爆破中安全填塞长度设计原则的研究

通过分析药室体积和药室横断面积，应用气体运动相似的特性，推导出一种新的硐室爆破填塞长度设计原则，并给出了计算实例     

Relations of fish community composition to environmental variables in streams of central Nebraska,USA

Nine sites on streams in the Platte River Basin in central Nebraska were sampled as part of the US Geological Survey's National Water-Quality Assessment Program during 1993–1994. A combination of canonical correspondence analysis and an index of biotic integrity determined from fish community data produced complementary evaluations of water-quality conditions. Results of the canonical correspondence analysis were useful in showing which environmental variables were significant in differentiating fish communities at the nine sites. Five environmental variables were statistically significant in the analysis. Median specific conductance of water samples collected at a site accounted for the largest amount of variability in the species data. Although the percentage of the basin as cropland was not the first variable chosen in a forward selection process, it was the most strongly correlated with the first ordination axis. A rangeland-dominated site was distinguished from all others along that axis. Median orthophosphate concentration of samples collected in the year up to the time of fish sampling was most strongly correlated with the second ordination axis. The index of biotic integrity produced results that could be interpreted in terms of the relative water quality between sites. Sites draining nearly 100% cropland had the lowest scores for two individual metrics of the index of biotic integrity that were related to species tolerance. Effective monitoring of water quality could be achieved by coupling methods that address both the ecological components of fish communities and their statistical relationships to environmental factors.     

可燃性气体含氧量安全限值的探讨

焦炉煤气的安全含氧量目前存在一些异议。由此,提出如何确定可燃性气体含氧量安全限值的问题。笔者提出了惰性气体对含氧量安全限值的影响,探讨了采用化学计算法和作图法能对可燃性气体含氧量作简单确定,用此方法确定焦炉煤气的含氧量安全限值为４％ 。笔者认为,焦炉煤气的安全氧含量可适当放宽,以２％ 为参考值。     

坚持“三个不变”做好企业改制期间安全生产工作

武汉钢铁（集团）公司在改制期间针对安全工作出现的新情况,坚持“安全第一,预防为主”的方针不变,坚持以安全生产责任制为中心不变,坚持严格管理,严格考核不变,保证了改制期间的安全生产工作。     

Whose voices count in biodiversity conservation? Ecological democracy in biodiversity offsetting,REDD+, and rewilding

ABSTRACT

Ecological democracy seeks environmentally sustainable ends through broad, active democratic participation. What happens when laws fostering participation in environmental decision-making and biodiversity preservation lead to differing results? What is best for biodiversity may not be what for local citizens believe is best. I examine conflicts and congruencies in the context of Biodiversity Offsetting, REDD+ (Reducing Emissions from Deforestation and forest Degradation), and the Rewilding movement. I ask questions that are legal (Who has what legal rights to speak for or against programs that enhance biodiversity?), epistemological (Whose expertise and knowledge matters when scientists and non-scientists don't agree?), axiological (Are some values objectively better, and why?), and normative (Whose opinions about biodiversity should count?). Many people have the right to participate in an ecological democracy: But when protecting biodiversity, who does and should have the right to be heard? I problematize the role that ‘local’ actors play in decision-making and describe the variegated role that experts – particularly biologists – play in ecological democracy when biodiversity preservation matters. To determine whose values and voices should be prioritized, I describe ‘deep equity,’ an axiological and normative groundwork for determining when biodiversity-promoting policies may be preferable even if affected citizens don't agree.