中水回用系统在校园内的应用探讨——以浙江建设职业技术学院为例

以浙江建设职业技术学院为例,总结了国内高校中水回用系统的建设经验.经过分析学院给排水现状及污水水质,提出了中水系统工程建设路径,并对中水处理系统工程的成本效益进行了较详细的分析,论证了整个校园改造工程的经济效益.提出了适合高校校园中水回用系统的处理工艺,认为在高校校园内建设中水系统,即有社会效益和环境效益,也有一定的经...     

浅析中水回用技术处理国内高校生活污水现状

主要阐述了当下我国高校污水的中水回用技术现状及运行中存在的问题,并针对性地提出具体建议,以期为高校污水处理及利用提供参考。     

人工湿地应用于高校中水回用处理的探索与研究

人工湿地是一种高效低耗的污水自然生物处理工艺。文章以广西交通职业技术学院四塘校区为例,对校园生活污水采用人工湿地技术进行中水回用处理进行了试验研究。试验结果表明,经过处理,污水的COD、TP、NH3-N、SS均有不同程度的下降,能够基本达到城市杂用水水质标准。人工湿地技术能够有效提高水资源利用率,是一种值得在高校推广的中水回用技术。     

中水回用系统结构

中水是解决城市水资源紧缺的重要手段之一,通过对中水使用全程的分析建立中水回用系统的结构,并确立系统的主要构成要素,推动我国中水回用和污水资源化的进展。     

中水回用技术及应用前景的探讨

随着经济建设和城市化的快速发展,污水排放量增长很快。大量污水未经处理直接排放,不仅造成水资源的浪费,而且使大部分水资源受到不同程度污染。文章从污水回用的紧迫性到回用概况及现行的回用技术,都做了归纳分析,并且结合我国的实情展望了中水回用技术的使用前景。     

运转场中水回用效果评价及应用

目的为探索工业污水处理方法,实现中水回用,循环利用以解决水资源紧缺问题,减轻企业负担。方法增加污水二级处理工艺流程:气浮机排出水经吸附、消毒和回收处理,监测分析对照处理效果结果工业污水经过一级处理,检测达到了《污水排放综合标准》,经二级处理达到《铁路回用水质标准》。结论此工艺流程的污水处理站的建立,使工业污水经过处理,实现了中水回用[1],循环利用,节约了水资源,大大降低了企业生产成本,值得推广。     

浅谈"城市中水"在我国的应用及价格的问题

我国是缺水国家,中水回用是提高水资源利用率的主要形式,中水回用规模化是的必然趋势。中水价格是影响中水回用的重要因素。文章介绍了国内外中水回用现状,阐述了合理的中水价格对于中水可持续回用的重要实践意义。     

浅谈保定市中水回用

中水回用是解决城市水资源短缺的一种有效途径,分析了保定市实现中水回用的必要性,介绍了国内外中水回用的发展情况,针对保定市中水回用的现状,剖析目前中水回用中存在的问题,提出了相应的对策措施。     

中国污水多目标再生利用途径浅议

污水回用既可以有效地节约和利用有限的淡水资源,又可以减少废水的排放量,减轻对水环境的污染,具有明显的社会效益、环境效益,经济效益也很明显。据不同的水质要求对污水进行不同程度的深度处理,减少后续工艺的处理水量,降低能耗,节省中水回用的费用,更好的实现工业废水零排放。     

浅谈“城市中水”在我国的应用及价格的问题

我国是缺水国家，中水回用是提高水资源利用率的主要形式，中水回用规模化是的必然趋势。中水价格是影响中水回用的重要因素。文章介绍了国内外中水回用现状，阐述了合理的中水价格对于中水可持续回用的重要实践意义。     

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.     

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.     

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     

Chinese Scientists Use Earth Observation Technologies to Study and Protect Wild Camels

<正>Chinese scientists plan to apply Earth Observation technologies to protect the critically endangered wild camels(Camelus ferus).With the help of remote sensing,satellite positioning,geographical information system and wireless sensors networks,they will be able to access the distribution and population of the wild camels and protect their habitats.The project will be carried out by the International Research Center for Wild Camel Conservation,which was jointly established earlier this year by the Institute of Remote Sensing and Digital Earth(RADI)of the Chinese     

More than Skin Deep – Understand Skin Biology by Means of Dermatogenomics

<正>The Paul Gerson Unna Research Group on Dermatogenomics was founded in October 2012 at the Partner Institute for Computational Biology.The ultimate goal of the group is to understand the biology of skin and skin appendages.