葡萄糖酸钙制备工艺与临床研究概述

葡萄糖酸钙是一种有机钙盐,主要通过葡萄糖氧化反应生成葡萄糖酸,再经中和反应制得葡萄糖酸钙.现制备葡萄糖酸钙的方法有发酵法、电氧化法、金属催化法、酶法、化学催化法等.随着对葡萄糖酸钙药理机制研究的加深,葡萄糖酸钙在临床用药上发挥着越来越广泛的应用.文章通过检索近期相关文献,综合现有研究成果,归纳了葡萄糖酸钙的制备工艺及临床研究,为葡萄糖酸钙的进一步开发应用提供参考依据.     

包头市青山区8—10岁儿童磺缺乏病甲状腺肿大率及尿磺监测分析

本文调查了内蒙古包头市青山区８～１０岁儿童碘缺乏病甲状腺肿大率，结果表明，甲状腺肿大率为１９．６％，且以城乡结合部居住儿童为高；监测了其尿碘，尿碘水平１００ｕｇ／Ｌ，以下者为１２．７％，其中５００ｍｇ／Ｌ者也有发现。据此情况，今后仍要强化防治工作。     

印度软件产业的成功因素分析

印度软件产业取得的成就举世瞩目。１９９４／１９９５财政年度，印度软件产业的产值是８．４亿美元，其中出口４．７５亿美元；到１９９９／０００年，产值已达５７．２１亿美元，中出口４０．２３亿美元；五年间，产增长近７倍，出口增长逾８倍，出年均增长率高达５４％。目前，软出口已占到了印度全部出口的０％强。这些业绩的取得不是偶然，是机遇、条件和努力综合作用结果。一、国际机遇二十世纪七十年代，计算机为一种生产工具开始在印度工界出现，当时人们不能预知它作用，更想象不到它将给印度来多少财富。八十年代中期，一有远见的…     

紫外分光光度法测定香丹注射液中水溶性酚和酚酸的总含量

建立了香丹注射液中水溶性酚和酚酸总含量的测定方法．运用紫外分光光度法，在波长280nm处测定，水溶性酚和酚酸总含量在0．005～0．025mg／mL范围内具有良好的线性关系，r=0．9999，平均回收率为99．29％，RSD=0．73％(n=5)．本方法可靠、简单、无干扰，能够有效的控制香丹注射液的质量．     

甲硝唑的单扫示波极谱分析

本文系统地研究了甲硝唑在汞电极上的电极过程，证明了该电极过程为一含有吸附作用的不可逆的扩散控制过程，电子转移数为４，不可逆系数ａ＝０．７１４．建立了甲硝唑的单扫示波极谱测定法，在０．２０ｍｏｌ／Ｌ的ＮａＣｌ溶液中，于－０．７１Ｖ（ｖｓＳＣＥ）处的峰高与浓度［（０．０２─８０）ｍｇ／Ｌ］间存在良好的线性关系，检测限为２．４μｇ／Ｌ，ＲＳＤ＝２．０％（ｎ＝８），并考察了人体内常见微量物质对的影响。     

添加剂法降低水电解能耗

在电解工业中,水电解制氢每年要耗费大量电能。如何降低水电解能耗,是一项节能的重要课题。活性涂层阴极可降低水电解能耗,但因该电极的使用寿命短而不能广泛推广应用。为了克服现有活性涂层阴极使用寿命短的缺点,大连化学物理研究所于1983年开展了添     

肝癌术后的双插管介入治疗

自１９９４年开始,仙居县人民医院地肝癌切除后常规置肝动脉系,门静脉系ＤＤＳ泵进行双插管化疗,术后半年,１年和２年夏发率分别为３．８％（１／２６）,１５．３％（４／２６）和６１．５％（１６／２６）,术后半年,１年和２年生存率分别为１００％（２６／２６）９２．３％（２４／２６）和６９．２％（１８／２６）,结果表明,术后双插管介入治疗对延缓肝癌复发,提高生存率有一定的作用。     

薄层CT动态扫描在诊断胰腺癌侵犯血管中的价值

探讨了胰腺癌血管受累的ＣＴ分型与肿瘤手术可切除性的关系．对４３例经手术、病理证实的胰腺癌进行薄层ＣＴ动态扫描，根据确定的ＣＴ标准，观察肿瘤与血管的关系，并与手术结果对照．发现胰腺癌血管受累以Ｃ型最常见，占３７．２％，Ａ型１０例，肿瘤切除率１００％（１０／１０），Ｂ型９例，切除率为７７．８％（７／９），Ｃ型、Ｄ型２４例，均不可切除．表明薄层ＣＴ动态扫描能提高胰腺癌血管受累的诊断正确率，血管受累ＣＴ分型对外科制定手术计划具有一定价值．     

高效液相色谱法测定铃兰欣的含量

目的：用高效液相色谱法同时测定复合制剂铃兰欣成分注射用头孢哌酮钠和舒巴坦钠的含量。方法：本法以外标法为基础，色谱条件：以ODS-3反相柱作为分析柱，流动相组成为0．005mmol／L四丁基氢氧化铵-乙腈（825：175，V／V），磷酸调整PH=5．0，流速为1．2ml／min，再自外检测器272nm进行检测。结果：本法注射用头孢哌酮钠和舒巴坦钠的最低检出浓度分别为10mg／L和5mg／L，在20-1000mg／L范围内呈线形，注射用头孢哌酮钠和舒巴坦钠的绝对回收率分别为99．4％-102．9％和95．0％～105.3％，批内和批间RSD分别为1.4％1．5％和1.8％1．9％，结论：此方法简便、快速、准确，可作为测定复合制剂铃兰欣含量方法.     

黑僵菌var.majus原生质体的再生回复

研究了黑僵菌ｖａｒ．ｍａｊｕｓ原生质体的性状和再生回复。黑僵菌ｖａｒ．ｍａｊｕｓ原生质体的无核率为２５．３％,有核率为７４．７％,其中单核率为５３．６％,原生质体再生回复的形态可观察到三种,从再生频率和菌落生长发育速度这两方面综合考虑,选择以０．７ｍｏｌ／Ｌ葡萄糖作为原生质体再生回复用培养基的渗透压稳定剂较为合适。     

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