PTA装置扩产氧化母液罐挖潜——搅拌器改造

上海石化0.4 Mt/a PTA装置扩产改造中,TJ-302氧化母液罐处理量不能满足需求,需要大幅度加快循环速度,在原有设备上增设搅拌器是最经济的选择。增设搅拌器后,又出现新问题,由于循环速度加快,设备中原有的固体含量增加,必须进行再改造。经充分的分析研究以及计算,增设了罐内轴滑动轴承,从而解决了上述问题。     

Cognitive abilities,digital games and arithmetic performance enhancement: A study comparing the effects of a math game and paper exercises

Besides entertainment, games have shown to have the potential to impact a broader variety of cognitive abilities. Research has consistently shown that several aspects in cognition such as visual short-memory, multitasking and spatial skills can be enhanced by game play. In a previous study, it was found that playing Monkey Tales, a game aimed at training arithmetic skills, helped second grade pupils to increase their accuracy in mental calculation as compared to paper exercises. In this follow up study we explore whether traditional methods and game training differ in terms of the cognitive processes that both are able to impact. We incorporated standardized measures of working memory and visuo-motor skills. Additionally, the mathematics game was modified and its contents extracted to allow precise comparison between the gaming and paper exercises condition. Thus each single math exercise, type of question (e.g., multiple choice), quantity and order was perfectly matched in the game training and the traditional training conditions. Gains in arithmetical performance, and self-reported measures of enjoyment were also investigated. We found some evidence suggesting that arithmetic performance enhancement induced by game play and paper exercises differ not only in terms of enjoyment but also of working memory capacity improvements.     

Can child-pedestrians’ hazard perception skills be enhanced?

ObjectiveTraffic collisions yield a substantial rate of morbidity and injury among child-pedestrians. We explored the formation of an innovative hazard perception training intervention – Child-pedestrians Anticipate and Act Hazard Perception Training (CA²HPT). Training was based upon enhancing participants’ ability to anticipate potential hazards by exposing them to an array of traffic scenes viewed from different angles.MethodTwenty-four 7–9-year-olds have participated. Trainees underwent a 40-min intervention of observing typical residential traffic scenarios in a simulated dome projection environment while engaging in a hazard detection task. Trainees were encouraged to note differences between the scenarios presented to them from separate angles (a pedestrian's point-of-view and a higher perspective angle). Next, trainees and control group members were required to perform crossing decision tasks.ResultsTrainees were found to be more aware of potential hazards related to restricted field of view relative to control.ConclusionsChild pedestrians are responsive to training and actively detecting materialized hazards may enrich child-pedestrians’ ability to cross roads.     

催化裂化烟气超低排放技术的可行性研究

工业废气是一项主要空气污染源。烟气超低排放技术是一项主流的烟气污染源治理方法。对催化裂化烟气超低排放技术进行研究,分析影响催化裂化烟气超低排放的制约因素,明确催化裂化烟气超低排放工程的注意事项。     

超前探水注浆以及预防H_2S技术的应用

结合泰汶石膏矿大巷工作面探水注浆施工实例,介绍了石膏矿防治水、H2S的施工工艺和技术方案,该方法经济合理、安全可靠、堵水、防治H2S效果显著。     

快速探放有动态补给采空区水的实践与认识

介绍了在有动态水补给的情况下快速探放大储量采空区水的成功经验     

面向21世纪的建筑学专业教学改革

21世纪即将到来，它将带来许多与本世纪完全不同的变化。新的形势要求建筑学专业教学作出相应的改革。本文针对21世纪建筑学专业教学所面临的来自各个方面的冲击和挑战，分析了国内大多数院校目前所沿用的建筑学专业教学模式存在的问题，提出面向21世纪的建筑学专业教学模式的改革至少应该从教学安排体制化、课程设置体系化、课程内容更新频繁化、教学手段高科技化、主干课程教材系统化等五个方面展开。     

新建本科院校土木工程专业毕业设计指导初探

分析了新建本科院校土木工程专业毕业设计面临的问题,并根据实际情况,从认识、管理、选题、方法、考核等方面探讨了指导新建本科院校土木工程专业毕业设计时应采取的措施。     

水井抽水过程消耗的功和能

本文试图从功和能的角度分析抽水井的能量转化。抽水过程是通过抽水设备输入一定能量，克服井管内外的摩阻，把水由地下提升到地表的作功过程。抽水设备输入的有用功是决定水井出水量分配和产生能量转化，即引起水头下降的根本原因。按能量守恒定律，抽水设备输出的有用功，一部分消耗于井管内的阻力损失；另一部分传递到井底推动地下水向井汇流。     

当代工业建筑环境设计浅析

自英国产业革命后出现的工业建筑 ,作为城市建设的重要组成部分 ,在时代的推动下自由地成长 ,时至今日 ,已是硕果累累。在人本主义被广泛接受的今天 ,环境设计作为最大限度地体现人性化设计的手段之一 ,已成为工业建筑设计中的重要课题 ,且贯穿于设计的各个部分和阶段