Interactive mechanism of working environments and construction behaviors with cognitive work analysis: an elevator installation case study

Unsafe behavior is a leading factor in accidents, and the working environment significantly affects behaviors. However, few studies have focused on detailed mechanisms for addressing unsafe behaviors resulting from environmental constraints. This study aims to delineate these mechanisms using cognitive work analysis (CWA) for an elevator installation case study. Elevator installation was selected for study because it involves operations at heights: falls from heights remain a major cause of construction worker mortality. This study adopts a mixed research approach based on three research methodology stages. This research deconstructs the details of the working environment, the workers’ decision-making processes, the strategies chosen given environmental conditions and the conceptual model for workers’ behaviors, which jointly depict environment–behavior mechanisms at length. By applying CWA to the construction industry, environmental constraints can easily be identified, and targeted engineering suggestions can be generated.     

职业高等教育法律专业的培养目标与专业课程设置初探

文章认为职业高等教育法律专业应根据自身特色规划培养目标和专业课程，尤其是从理论讲授、实际操作与社会实践三个方面对专业课程的设置作了较为深入的探讨.     

Set-up costs and the existence of competitive equilibrium when extraction capacity is limited

Although set-up costs are prevalent and substantial in natural resource extraction, it is known that a Walrasian competitive equilibrium cannot exist in simple extraction models with set-up costs. This paper demonstrates that this result is sensitive to the assumption of unlimited extraction capacity and derives sufficient conditions for existence. An equilibrium exists if extraction is limited such that each firm earns sufficient surplus to cover its set-up costs or if firms choose extraction capacity subject to non-increasing returns. The resulting competitive equilibrium price either grows at the rate of interest when total extraction is below industry capacity or is constant when industry capacity is fully utilized. In the equilibrium, identical deposits are opened simultaneously, and set-up costs for new deposits are incurred when the industry has excess capacity rather than when capacity is fully utilized.     

防电磁波辐射的功能性服装

电磁波辐射已成为危害人类健康的第四大污染源，如何进行屏蔽是人们日益关注的问题，本文介绍了防电磁波辐射服装的功能及特点，提出了屏蔽服装今后的发展方向．     

电催化氧化降解大气中甲醛的研究

将有机废气通过高效微孔曝气转移到液相,采用活性碳纤维作为电极,研究不同鼓气速率和不同电压对处理效果的影响.结果表明,本方法适用于低浓度高气量有机废气的处理.在实验范围内,当曝气速率为20L·h-1,外加电压为5V的条件下,处理速率最稳定.     

活性炭纤维处理甲苯废气试验研究

采用动态吸附试验,研究了进气温度、废气浓度对粘胶基活性炭纤维吸附甲苯过程的影响,分析了活性炭纤维(ACF)的穿透时间、平衡饱和吸附量的变化情况,并用Y-N模型对穿透曲线进行拟合.研究了吸附饱和ACF采用氮气热再生法,确定了温度、流量、再生时间等最佳操作参数,并进行了相关机理的探讨.     

有无隔膜槽中成对电解脱色活性艳蓝性能比较

分别采用有/无隔膜电解槽,以活性炭纤维(ACF)为阳极和阴极,研究了不同电流密度下蒽醌染料活性艳蓝KN-R的电化学脱色。在染料脱除量、电耗、脱除当量等方面比较了两种电解槽的脱色性能。结果表明,1.0～1.5 mA/cm2时,两种电解槽中均发生阳极电氧化和阴极电还原同时进行的成对电解脱色,无隔膜槽脱色性能优于隔膜槽。     

炼油及腈纶废水污泥法(A/O)脱氮探讨

介绍了安庆石化总厂水质净化场的简况及试生产期间运行结果．并对该装置目前存在的主要问题进行分析和A／O脱氮的探讨，提出了相应的对策。     

物化-生化组合工艺处理化纤纺织品染色废水

采用物化 生化组合工艺处理化纤纺织品染色废水 ,结果表明 ,当进水COD为 2 50 0～ 550 0mg/L、色度为 6 0 0倍 ,BOD5 为 6 0 0～ 1 40 0mg/L时 ,COD去除率和BOD5 去除率均在 95%以上 ,脱色率可达 93% ,出水达到了排放标准。该工艺适合各种规模化纤纺织品染色厂的废水处理。     

活性炭纤维吸附废水中对硝基苯酚及其脱附研究

采用新型高效吸附剂——活性炭纤维吸附废水中对硝基苯酚，对其吸附和脱附影响因素进行了较详细的研究，确定了最佳工艺参数，并对动态吸附一脱附进行了稳定性实验。在最佳的吸附条件下，装填4g活性炭纤维可处理含对硝基苯酚1000mg/L的废水1400mL，出水对硝基苯酚浓度〈2mg／L，达到国家综合污水一级排放标准，活性炭纤维有效吸附量可达349．87mg／g。在最佳脱附条件下，脱附率〉99％，并可从高浓度脱附液中回收对硝基苯酚。稳定性实验表明，吸附-脱附性能稳定，采用活性炭纤维吸附处理对硝基苯酚废水是一种行之有效的处理方法。