优化城镇污水处理厂运行管理的探讨

结合城镇污水处理厂运行管理经验,探讨通过优化工艺控制、科学合理的生产调度、强化设备管理、加强安全管理和成本管理控制等措施,来实现优化城镇污水处理厂的运行管理;从而有利于污水处理厂实现安全生产、稳定达标、高效运行。通过优化和强化城镇污水处理厂运行管理,不仅有利于充分发挥污水处理厂污水治理的环境效益,在国家节能减排工作中发挥更大的作用;同时有利于污水处理厂进一步降低运行成本、开源节流,实现污水处理厂的可持续发展。     

辛醇异丁醛装置化工异味综合治理

分析了辛醇异丁醛装置化工异味来源,介绍了通过技术改造、回收利用、生物除臭等方法消除化工异味的成功经验,对目前存在的问题,提出改进建议。     

农村生活污水处理技术的应用效果及其经济性分析研究——以重庆地区为例

为了解农村生活污水处理技术在应用过程中的效果.以重庆地区为例,对重庆市63个村庄的生活污水处理设施进行了调查.根据出水水质和建设成本,对村庄常用的污水处理技术进行经济技术综合比较分析.结果表明,无动力人工湿地较为经济,应用效果并不理想,在经济条件比较薄弱的地区可作为过渡型处理技术加以应用;渠道式生态沟投资较昂贵,不推荐使用;一体化设备投资昂贵,运行管理简单,在经济条件较好的地区可以考虑使用.     

污染源普查后区域环境管理应用探讨

在第二次全国污染源普查的基础上,利用污染源普查期间配置的软硬件,开发市级区域环境污染源管理平台,进行污染源数据的年度更新,拓展污染源普查软件应用,实现环境管理及环境执法移动终端的应用。拓展二污普一张图的功能,利用移动客户端机动实时及地定位导航等为环境管理执法和环境突发事件应急处置提供技术支持。     

环境对冲压发动机烟火点火器性能影响研究

为促进某型冲压发动机烟火点火器生产工艺的定型,在海南进行了高温、高湿热带海洋气候自然环境对点火器长期贮存性能影响的研究。点火器采取无包装的暴露试验和密封包装贮存试验2种方法,分别在户外暴露场、棚库和库房等3种环境条件下进行试验。通过试验得到环境温度变化对密封包装储存的点火器的绝缘电阻值、电阻性能均无明显影响,点火性能良好,玻璃钢、涂层等贮存性能良好,点火器的环境适应性良好等结论。     

XZKP型高效空塔喷淋烟气脱硫装置技术特点

介绍了XZKP型高效空塔喷淋烟气脱硫装置的技术原理、技术特点、中试及工业化试验的情况。该技术通过改进工艺和结构,在提高脱硫效率和脱硫剂循环利用率两项技术上成效显著,用户可在不增加装置投资的前提下,获得更高的效率和更低的运行成本。     

An experimental study on the effect of mobile phone conversation on drivers' reaction time in braking response

Introduction

This paper presents an experimental study in which the effect of three factors (distance between cars, mobile call duration, and time of driving (day or night)) on drivers' reaction time in braking response was investigated.

Methods

The experiment was performed in a real driving environment in which 27 male adults between the ages of 22 and 24 years participated. Three levels of the first two factors (i.e., distance between cars and call duration) and two levels of the last factor (i.e., time of driving) were selected to conduct the experimental study. A full factorial design of experiment with 18 treatment combinations and three replicates of each combination were used. Fifty-four trial runs were performed in a random manner and for each run drivers' reaction time in braking response was measured, which served the data for further analysis. Analysis of variance (ANOVA), interaction effect analysis, and various model adequacy tests were carried out using Design Expert software.

Results

The results of the study indicated that the most important factor affecting the drivers' reaction time in car braking response was the mobile call duration followed by the time of driving, with a high level of interaction between the two factors. It was also found that the distance between cars did not seem to have a significant effect on the reaction time in braking response. It is to be noted that these response times are expected to be higher under normal driving conditions where awareness of experimental environment is not present.

Impact on Industry

The findings of this study would help mobile phone industries in improving safety of mobile phone users in driving environment.     

水体中高锰酸盐指数的流动注射分析方法

研究了用流动注射分析技术测定水体中高锰酸盐指数。使用新发明的耐腐蚀恒流泵、低记忆高效混合器、不存留气泡流通池等部件,通过高温高压,缩短消解时间,从而建立了一种可用于无人值守的自动在线快速监测水体中高锰酸盐指数的分析方法。     

Wayfinding with a GPS-based mobile navigation system: A comparison with maps and direct experience

This study examined the effectiveness of a Global Positioning System (GPS)-based mobile navigation system in comparison to paper maps and direct experience of routes, by focusing on the user's wayfinding behavior and acquired spatial knowledge. Based on information received from one of these three media, participants walked six routes finding the way to goals. Results showed that GPS users traveled longer distances and made more stops during the walk than map users and direct-experience participants. Also, GPS users traveled more slowly, made larger direction errors, drew sketch maps with poorer topological accuracy, and rated wayfinding tasks as more difficult than direct-experience participants. Characteristics of navigation with these three learning media and possible reasons for the ineffectiveness of the GPS-based navigation system are discussed.     

泉州市移动通信基站电磁辐射环境影响分析

对泉州市移动通信GSM基站和TD—SCDMA基站电磁辐射状况进行监测与分析。通过理论计算预测基站电磁辐射安全距离,对典型敏感目标、典型基站进行电磁辐射的监测,结果与理论预测情况相符。选取302个GSM基站和306个TD—SCDMA基站进行电磁辐射的监测,结果表明,各基站电磁辐射满足单个项目管理低于目标限值0．08W／m2的标准。分析表明,基站在正常运行时,对周围的电磁辐射环境影响能满足国家相应标准的要求。