危废焚烧烟气净化脱白技术研讨

危废焚烧烟气净化脱白是危废焚烧烟气净化的深入,烟气脱白的主要任务就是要清除因烟气遇冷后产生的小水珠白烟,本文描述了危废焚烧烟气净化脱白的现状及关于几种危废焚烧烟气净化脱白技术,为以后危废焚烧烟气净化脱白设计人员提供思路及借鉴。     

危险废物焚烧处置废气污染物净化技术应用研究

本研究介绍了控制焚烧炉烟气中污染物的净化技术的实际案例,采用"急冷+干法脱酸+活性炭吸附+布袋除尘器+喷淋脱酸塔"工艺处理焚烧炉废气,能实现焚烧炉废气中各污染物稳定达标排放。     

垃圾焚烧烟气净化工艺研究

人类日常生活中会产生大量生活垃圾,其组分复杂,危害巨大,严重影响了生态环境。垃圾焚烧以可以实现垃圾的减量化、资源化目标的优势已经逐渐取代垃圾填埋的传统方法在我国广泛地应用。垃圾焚烧烟气含有大量污染物,处理不当会产生严重的二次污染,因此烟气的净化至关重要。本文综述垃圾焚烧烟气脱硫脱硝除尘工艺,结合前沿最新技术,对垃圾焚烧烟气净化工艺进行分析。     

再生烟气固体脱氯技术的工业应用

介绍了再生烟气脱氯技术在天津石化大芳烃装置上取代碱洗脱氯工艺的工业试验及运行情况。工业试验结果表明,采用固体脱氯剂法取代现有的UOP碱洗工艺,消除碱渣和废水的排放,简化、优化了脱氯工艺,具有操作简单、检测准确、方便等特点,再生烟气排放气中HCl体积分数含量小于1μL/L,低于国家排放要求。     

垃圾焚烧发电厂烟气净化处理自动控制系统的设计及应用

结合山东某垃圾焚烧发电厂烟气净化处理项目,研究探讨了垃圾焚烧发电厂烟气处理自动控制系统的设计及应用,并在此基础上介绍了SNCR脱硝、半干法+干法脱酸、布袋除尘、SCR脱硝以及附属公共部分自动控制系统设计的技术特点以及应用效果等。并对垃圾焚烧厂的烟气在线监测系统及仪表进行设计选型,以期为其他垃圾焚烧发电厂烟气净化处理系统设计提供参考。     

燃煤电厂重金属汞排放及控制现状分析

新的国家《火电厂大气污染物排放标准》(GB13223-2011)明确要求,自2015年1月1日起,燃煤锅炉大气污染物汞及其化合物执行排放浓度0.03mg/m3的限值。对于脱汞效果由高到低的除尘器组合方式为:湿式电除尘+布袋≥电除尘器+布袋≥布袋≥电除尘器。燃煤电厂重金属汞在通过除尘、脱硫烟气净化装置后,在降低烟尘和二氧化硫排放浓度的同时,也可以提高了对重金属汞及其化合物的去除。     

湿式烟气柔性电极深度净化技术工艺介绍

柔性电极应用于燃煤湿式烟气深度净化技术,高烟气流速下具有气溶胶脱硫率高、无间断在线操作、运行成本低等优点,可有效解决燃煤电厂“石膏雨”现象,同时对SO3、PM2.5、汞等具有协同控制作用。通过湿式烟气柔性电极烟气深度净化技术工艺设计,重点分析了该技术特点及系统构成,详细阐述了系统调试前的准备工作和工作流程,为形成新的烟气治理技术路线提供技术参考。     

湿式烟气柔性电极深度净化技术工艺介绍

柔性电极应用于燃煤湿式烟气深度净化技术,高烟气流速下具有气溶胶脱硫率高、无间断在线操作、运行成本低等优点,可有效解决燃煤电厂"石膏雨"现象,同时对SO3、PM2.5、汞等具有协同控制作用。通过湿式烟气柔性电极烟气深度净化技术工艺设计,重点分析了该技术特点及系统构成,详细阐述了系统调试前的准备工作和工作流程,为形成新的烟气治理技术路线提供技术参考。     

工业烟气中铅、锌杂质的脱除技术浅析

随着社会的发张和技术的进步,绿色与环保越来越受重视,工业生产中产生的废气处理方式方法引起人们的关注。本文对去除工业烟气中铅、锌的处理方式进行了探讨,主要介绍了化学吸收法、物理吸收法、袋式除尘净化工艺、电除尘净化工艺,旨在促进工业烟气处理技术的进步,以及根据污染物排放情况、排放标准选择合适的处理方式。     

铝电解含氟烟气的治理探讨

本文通过对含氟污染物的产生与危害的分析,重点从生产工艺角度探讨了铝电解过程中含氟污染物排放量的影响因素和控制措施。从烟气干法净化工艺角度探讨了提高烟气净化效率和降低含氟污染物排放量的措施,以达到治理污染的目的,实现“资源—产品—废物—再生资源”的循环经济目标。     

Students' Reactions to the Introduction of Videoconferencing for Classroom Instruction

This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors.     

Cooler temperatures inductive to locust outbreaks

Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007.     

Exploring Multiplexity: Social Network Structures in a Computer-Supported Distance Learning Class

A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction.     

The Role of Intermediating Institutions in the Diffusion of Electronic Data Interchange (EDI): How Industry Associations Intervened in Denmark, Finland, and Hong Kong

Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies.     

Low doses of a red wine ingredient figh diabetes in mice

Aresearch group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol--a chemical found in the skins of red grapes and in red wine--can improve the sensitivity of mice to the hormone insulin, according to a report in the October,2007 issue of Cell Metabolism. As insulin resistance is often characterized as the most critical factor contributing to the development of Type 2 diabetes, the findings“provide a potential new therapeutic approach for preventing or treating” both conditions, the researchers said.     

How Electronic Publishers are Protecting Against Piracy: Doubts About Technical Systems of Protection

The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means.     

Rough Justice: A Statistical Assessment of ICANN's Uniform Dispute Resolution Policy

Long-standing conflict between domain name registrants and trademark holders prompted the Internet Corporation for Assigned Names and Numbers (ICANN) to create a global, mandatory arbitration procedure known as the Uniform Dispute Resolution Policy (UDRP). The UDRP has been used in 2166 cases involving 3938 domain names as of 1 November 2000. The policy gives the initiator of a complaint, generally a trademark holder, the right to choose which ICANN-accredited dispute resolution service provider (RSP) will handle the case. During the preparation of the UDRP,some feared that complainant selection would lead to "forum shopping" that might bias the results. This article performs a statistical assessment of the forum-shopping thesis and finds support for it. There are statistically significant differences in the various RSPs' propensity to take away names from defendants; there are also major differences in the number of cases brought to each RSP. RSPs who take away names have the larger share of cases. The study examines other variables that might explain differences in market share, such as price, the plaintiff's nationality, or the time taken to decide a case. It finds that nationality and time also are correlated with market share. The study concludes that shopping for a favorable outcome is an important factor in the UDRP.     

Prevalence of soft neurological signs in Chinese people

Prof. Raymond C.K. Chen, a neuropsychologist with the CAS Institute of Psychology, has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology.     

Molecular motor assembly of a biomimetic system

Active biological molecules and functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery, disease diagnosis and therapy, and new nanodevice construction.     

Monoculture Rubber Plantations Have Negative Ef ects on Controlling Splash Erosion

<正>In Xishuangbanna,one of China’s most biodiverse regions,landscape has changed dramatically during the past three decades due to the conversion of tropical rainforest to rubber plantations.In steep areas,terraces are often constructed before planting rubber trees,which causes two important changes in the soil:the destabilization of soil in the bench terraces and the increased vulnerability of unvegetated riser faces to erosion.Few studies have documented the nature and intensity of erosion on bench terraces.Prof.LIU Wenjie and his colleagues from the Xishuangbanna Tropical Botanical Garden(XTBG)conducted a study in Menglun County(21°5′39″N,101°15′55″E),Xishuangbanna to evaluate the influence