环境监测业务管理系统的设计与开发

以郑州市环境监测中心站监测业务流程为例,从技术路线、系统结构设计、系统功能分析和技术实现等方面分析并介绍了环境监测业务管理系统的特点和开发时需解决的技术问题。探讨了建立基于B/S结构、J2EE技术架构、创新的组件装配方式、Oracle9i数据库、中间件和多层体系结构等多项先进技术进行系统实现的设计方案。     

重庆地区吴茱萸属药用植物资源的调查研究

经调查鉴定，重庆地区吴茱萸属药用植物有9种（含种下等级），首次发现吴茱萸红花品系。重点介绍了它们的生境分布、药材商品与生产经营现状等，并编制了分种检索表，为科研、教学、生产经营及开发利用提供了科学依据。     

土壤pH、Eh对土壤-苦丁茶树系统中铅分布的影响

以苫丁茶冬青(Ilex kudingcha C.J.Tseng)扦插苗(15个月生)进行盆栽实验,通过土施H2SO4、Ca(OH)2和复合肥,改变土壤pH和氧化还原电位(Eh),研究土壤pH、Eh条件对土壤-苦丁茶树系统中铅分布的影响.结果表明:在所研究的土壤pH范围内,从酸性到碱性变化,铅在土壤中含量分布趋于减少,在...     

Effect of Cell-to-matrix Ratio in Polyvinyl Alcohol Immobilized Pure and Mixed Cultures on Atrazine Degradation

Atrazine biodegradation by immobilized pure and mixed cultures was examined. A pure atrazine-degrading culture, Agrobacterium radiobacter J14a (J14a), and a mixed culture (MC), isolated from an atrazine-contaminated crop field, were immobilized using phosphorylated-polyvinyl alcohol (PPVA). An existing cell immobilization procedure was modified to enhance PPVA matrix stability. The results showed that the matrices remained mechanically and chemically stable after shaking with glass beads over 15 days under various salt solutions and pH values. The immobilization process had a slight effect on cell viability. With the aid of scanning electron microscopy, a suitable microstructure of PPVA matrices for cell entrapment was observed. There were two porous layers of spherical gel matrices, the outside having an encapsulation property and the inside containing numerous pores for bacteria to occupy. J14a and MC were immobilized at three cell-to-matrix ratios of 3.5, 6.7, and 20 mg dry cells/mL matrix. The atrazine biodegradation tests were conducted in an aerobic batch system, which was inoculated with cells at 2,000 mg/L. The tests were also conducted using free (non-immobilized) J14a and MC for comparative purpose. The cell-to-matrix ratio of 3.5 mg/mL provided the highest atrazine removal efficiency of 40–50% in 120 h for both J14a and MC. The free cell systems, for both cultures, presented much lower atrazine removal efficiencies compared to the immobilized cell systems at the same level of inoculation.     

The behavioral component in the meaning of places

How do people think about the physical setting in the world around them? Part of the answer to this question may be in terms of the behaviors that occur there. To explore people's knowledge of behavior—place associations, twenty places (shown via color photographs) were assessed in five ways: (a) ratings of the place's suitability for each of eleven behaviors, (b) ratings of the expected frequency of occurrence of the eleven behaviors, (c) free listings of reasons for going to each place, (d) free listings of activities-while-there and (e) free listings of activities associated with the place. Results showed that people can distinguish places on the basis of behaviors, that the behavioral component of place meaning is composed of distinct aspects, and that knowledge of behavior is related to a global, overall representation of a place.     

高层学生公寓防火体系构建

归纳总结学生高层公寓火灾伤亡事故致因因素,利用事故树分析法对其进行定性分析,得出最小径集,找出控制事故发生的途径,并利用“瑟利模型”建立防火体系,得到此类火灾事故防控措施,即一要通过培训和教育的手段,提高人感觉火灾危险的敏感性,使人处于安全状态并能够迅速、敏捷、正确地做出行为响应;二要保证物处于安全状态,确保电气设备、建筑物本质处于安全状态,并使建筑物能发挥性能化灭火作用,能在一定程度上控制火势,为疏散争取时间.本文能为高校高层学生公寓预防和控制火灾伤亡事故工作提供一定的借鉴作用.     

Do energy prices affect employment? Decomposed international evidence

This paper analyzes the energy price-employment nexus and contributes to the literature by showing that it is important to decompose the regulatory effect into demand, cost, and factor-shift effects. This is done by means of a cross-country multi-sectoral dataset. The results show that both rising energy prices and shadow prices of energy have no significant effect on net employment when the manufacturing sectors only are analyzed. While finding significant variations across countries, the average employment effects become significantly positive once jobs in the economy as a whole are considered. This change is driven mainly by larger positive cost effects, which more than offset the negative demand effects and reductions in the positive factor-shift effects. Moreover, the paper reveals that the often implemented approach of using a simple regulation regressor, instead of decomposing the employment effect, can result in biased estimates.     

CEO education and corporate environmental footprint

We analyze the effect of CEO education on environmental decision-making. Using a unique sample of Danish firms from 1996 to 2012, we find that CEO education significantly improves firms' energy efficiency. We seek to derive causality using health shocks: the hospitalization of highly educated CEOs induces a drop in energy efficiency, whereas the hospitalization of less educated CEOs does not have any significant effect. Exploring the mechanisms at play, we show that our results are largely driven by advanced education in business degrees. Moreover, we show that CEO education is associated with greater environmental awareness: highly educated CEOs exhibit greater concerns for climate change, as measured by a survey of social preferences, and drive more environmentally efficient cars. Taken together, our findings suggest that education shapes managerial styles giving rise to greater sustainability in corporate actions.     

基于互联网+的轨道交通动力设备安全管理系统的研究

根据我国轨道交通设备安全管理的需求,提出基于互联网+的轨道交通动力设备安全管理系统平台的框架,运用J2EE开发工具,采用嵌入式高速数据采集技术、故障诊断技术,构建形成集成化、网络化和信息化的轨道交通动力设备安全管理系统。完善智能的设备安全管理系统,能有效提高轨道交通动力设备的安全监管力度,保障设备安全。     

矿山企业安全生产管理缺陷预警系统

矿山企业安全管理预警是针对可能发生的事故进行事先预测和防范.介绍了企业安全管理预 警系统的模型、预警系统各模块的功能及基于J2EE模式体系的设计与实现.