RuO2/La2O3/TiO2悬浮体系中直接耐晒黑G的光催化降解

钛酸丁酯为前驱体,采用溶胶-凝胶-浸渍法制备RuO2/La2O3/TiO2复合光催化剂,以紫外灯为光源,研究了催化剂组成、煅烧温度、溶液pH值等因素对直接耐晒黑G(DFBG)光催化降解的影响.结果表明掺杂量w(La2O3)1.39%、w(RuO2)0.12%、煅烧温度500℃(2 h)、溶液pH值7.3时,光催化活性最佳.当通气量为200 mL/min,催化剂投加量为150mg时,50 mg/L的DFBG溶液经60 min降解,其降解率近100%.DFBG的光催化降解服从Langmuir-Hinshelwood动力学模型,测得相应的动力学参数k=7.42×10-3mmol/L·min,K=19.54 L/mmol.     

生态滤池处理城市污水小试研究

生态滤池(MEEF)是利用由微生物和蚯蚓为代表的微型动物共同组成的人工生态系统,对城镇污水中的污染物进行降解处理的新型污水处理技术。采用单层滤池和复合床滤池进行实验,在相同的实验条件下,对生态滤池和无蚯蚓滤池的运行效果进行了比较。运行初期,生态滤池的出水水质稍优于无蚯蚓滤池,特别是悬浮物浓度低;运行半月后,无蚯蚓滤池表面积泥,出现厌氧情况,出水水质变差,而生态滤池至少正常运行1个月。复合床生态滤池连续进水运行,水力负荷达到2.0m3/m2·d,COD去除率达80%以上,出水SS浓度<5mg/L。结果表明,蚯蚓在维持滤池的正常运行起着重要作用。最后介绍了生态滤池中各种生物的作用及生态滤池的工作原理。     

非定态SO2制酸工艺在铅精矿烧结烟气治理中的应用

介绍了非定态SO2制酸工艺的特点、流程及其在铅精矿烧结烟气治理中的应用效果。该工艺具有良好的社会效益、环境效益和较好的经济效益，具有较高的推广应用价值。     

改善深圳河水质的补水方案及生态影响初步分析

深圳河旱季天然径流量小而污染负荷高,为了改善河流水质,在削减入河污染物的同时有必要采取补水措施。利用水质模型,计算了不同污水处理率下,分别以污水资源化再生水、珠江口海水和大鹏湾海水为补水水源时,深圳河达到基本不黑臭所需的补水量。讨论了补水方案对河流水质、盐度、水动力条件的改变及其对生态系统的影响。研究表明,引海水对河流生态系统的冲击不容忽视。而污水资源化是较优的补水方案。     

次氯酸钠处理终冷水中氰化物硫化物的研究

以次氯酸钠为氧化剂,用正交实验研究了次氯酸钠处理终冷水中氰化物和硫化物,得出正交实验中各因素的主次关系及对除氰除硫的影响。研究结果表明,反应体系的pH是影响脱氰脱硫的重要因素。在最佳处理条件,即pH为10．0,反应温度为25℃,投氯量系数为1．4,反应时间为45min．能使氰化物的质量浓度降至0．267mg／L,脱氰率高达99．8％,硫化物的质量浓度降到0．387mg／L,脱硫率达92．0％,达到≤0．5mg／L的国家排放标准。文章还对工业化提出了一些设想。     

电磁辐射与电磁防护

本文讨论了电气进程带来的电磁辐射污染及其防护问题。从电磁辐射的来源、作用人群、对人体的影响方式阐述了电磁辐射防护的必要性。介绍了电磁辐射暴露限值标准、电磁辐射防护原理、防护装备标准及产品现状。提出了现有电磁辐射暴露限值标准及防护装备产品标准的不足,指出现阶段应进行的进一步工作：考虑非致热效应对人体的影响,完善统一电磁辐射暴露限值标准;增加电磁辐射防护装备标准覆盖面,以利加强监管,进一步规范产品市场。     

A new look at the psychological contract during organizational socialization: The role of newcomers' obligations at entry

Previous studies have demonstrated that the psychological contract is largely shaped during socialization. This study adopts a complementary perspective and analyzes how the psychological contract at the start of employment shapes the subsequent socialization process. Drawing upon social exchange theory, we propose that newcomers with a higher sense of their personal obligations at entry will perceive orientation training as more useful and develop better relationships with their supervisors and peers, which in turn will facilitate their work adjustment. Results of a longitudinal survey on a sample of 144 recruits from a European Army show that newcomers with a higher initial sense of their employee obligations toward their employer report higher perceived training utility, higher leader–member exchange (LMX) with their instructors, and higher team–member exchange (TMX) with their platoon peers. Moreover, perceived training utility and LMX predict the fulfillment of employers' obligations; and training utility predicts the level of newcomers' employee obligations. Finally, training utility, LMX, and TMX predict some of three indicators of newcomers' adjustment, namely, role clarity (training utility and LMX), group integration (TMX), and organizational values understanding (training utility). These results highlight how newcomers' obligations at the start of employment contribute to the social exchange dynamic underlying organizational socialization. Copyright © 2015 John Wiley & Sons, Ltd.     

XK—1．5型除尘清洗两用机的研究、试验与应用

采用高压水和喷嘴的引射原理，使水射流通过喷嘴后高效雾化，达到降尘的目的，并主要沉降５μｍ以下对人体具有致命危害的呼吸性粉尘。当更换喷嘴后也可进行积上和物体的表面清洗。     

Potential moderating influence of career growth opportunities on careerist orientation and work attitudes: evidence of the protean career era in Singapore

The emerging transactional or protean employment contract appears to have precipitated the development of a careerist orientation on the part of employees. This study examined the generalizability of the construct in a collectivist culture and the potential moderating influence of career growth opportunities on the careerist orientation–work attitude relationships. The results tend to support the generalizability of careerist orientation across cultures and, importantly, showed an absence of a moderating influence for career growth opportunities, suggesting that organizations cannot effectively counter the negative effects of careerist orientation on work attitudes. Limitations of the study, directions for future research, and implication of the findings for organizational dependence on employees as a competitive resource are discussed. Copyright © 1999 John Wiley & Sons, Ltd.     

城乡接合部居民楼火灾风险评价及防控对策研究

为了准确探究城乡接合部居民楼火灾事故致因机理,预防与控制城乡接合部日常生产与生活过程中引发火灾事故的有效途径,建立信息面更全、实际性更强的火灾风险评估模型是目前行之有效的手段。基于湖南省某地发生火灾事故的实际情况,根据事故树分析法,以城乡接合部居民楼火灾事故为顶事件构建事故树,计算得到事故树的最小割集、最小径集和结构重要度,研究城乡接合部居民楼火灾事故的发生模式、致因因素及影响程度,为改善城乡接合部居民楼火灾安全提供重要的理论依据,并提出相应的防控措施及对策。