如何培养学生的空间想象能力

随着计算机技术的不断发展 ,计算机辅助绘图技术使传统的二维绘图发生了本质的变化 ,因此产品设计等可在计算机屏幕上进行三维实体造型 ,来代替传统的手工绘图 ,从而使制图人员从繁重的手工绘图工作中解放出来。教学是为生产服务的 ,所以在机制图教学中培养学生的空间想象能力需加强三维绘图的教学研究     

GC/FTIR联用法鉴定纸用人造香料

采用GC／FTIR联用技术对一种纸用人造香料的组成进行了定性、定量鉴定。比较了不同色谱柱的分离效果，选择Supelco wax^TM-10色谱柱对该香料进行分离。采用红外光谱对香料组成进行了鉴定，确定该香料由28种组分组成，其主要成份为醛类、酯类、醚类、醇类化合物，此外还含有少量的酮类、酚类化合物。     

Enhancing cellular immune response to HBV M DNA vaccine in mice by codelivery of interleukin-18 recombinant

Objective: To investigate the effect of interleukin-18 (IL-18) on immune response induced by plasmid encoding hepatitis B virus middle protein antigen and to explore new strategies for prophylactic and therapeutic HBV DNA vaccines. Methods: BALB/c mice were immunized with pCMV-M alone or co-immunized with pcDNA3-18 and pCMV-M and then their sera were collected for analysing anti-HBsAg antibody by ELISA; splenocytes were isolated for detecting specific CTL response and cytokine assay in vitro. Results: The anti-HBs antibody level of mice co-immunized with pcDNA3-18 and pCMV-M was slightly higher than that of mice immunized with pCMV-M alone, but there was not significantly different (P>0.05). Compared with mice injected with pCMV-M, the specific CTL cytotoxity activity of mice immunized with pcDNA3-18 and pCMV-M was significantly enhanced (P<0.05) and the level of IFN-γ in supernatant of splenocytes cultured with HBsAg in vitro was significantly elevated (P<0.05) while the level of IL-4 had no significant difference (P>0.05). Conclusion: The plasmid encoding IL-18 together with HBV M gene DNA vaccines may enhance specific TH1 cells and CTL cellular immune response induced in mice, so that IL-18 is a promising immune adjuvant.     

顺铂联合放疗治疗晚期子宫颈癌的临床分析

目的：评价顺铂辅助化疗联合放射治疗晚期子宫颈癌的疗效。方法：同期对比分析经放疗加顺铂化疗（放化组）60例和单纯放疗（单放组）60例Ⅲ期子宫颈癌患者5年生存率、局部控制率、远处转移率和并发症。结果：5年生存率放化组63.33%,单放组43.33%（P〈0.05）。局部控制率放化组80%,单放组60%（P〈0.05）。远处转移率放化组43.33%,单放组41.66%（P〉0.05）。放射性直肠炎：放化组13.33%,单放组10.00%（P〉0.05）。放射性膀胱炎放化组8.33%,单放组10.00%（P〉0.05）。无因治疗而引起的死亡发生。结论：放射治疗联合顺铂化疗能提高Ⅲ期子宫颈癌患者局部控制率和5年生存率,未改善远处转移率,副作用能耐受。     

B2B电子商务模式探讨

文章介绍了电子商务的几种主要模式及B2B电子商务概况，认为B2B模式将成为未来电子商务的主要模式。原因在于B2B模式具有使买卖双方信息交流低廉、快捷，可降低企业间的交易成本，减少企业的库存，缩短企业生产周期等竞争优势。同时还就B2B电子商务模式对企业的影响和制约我国B2B电子商务发展的因素及对策等问题进行了探讨。     

利用WinSock实现实时通信的新方法

通过Winsock编程技术，实现了时基于TCPAP协议的面向连接的流方式套接字网络通信程序的设计，阐述了在线实时通信的技术支持，给出了利用VB中的Winsock控件编写服务器端、客户端通信程序的基本思路。     

基于C/S模式的通用题库管理系统

分析了题库建设的必要性及以往题库系统中存在的问题，介绍了校园网上基于Client／Server模式的通用题库管理系统的结构设计及实现技术。     

基于Web的数据库系统研究与开发

从阐述数据库应用系统体系结构入手，分析了客户机／服务器（C／S)模式与浏览器／服务器(B／S)模式的各自优劣，基于web的数据库应用系统开发模式比客户机／服务器模式性能更好。设计开发了基于web的某武装部信息管理系统．     

基于C/S模式的社会保险档案管理信息系统的设计与实现

结合社会保险领域档案管理工作的实际,以湖北省荆州市社会保险事业局安泰社保服务中心档案管理信息系统为例,提出了一个面向社会保险事业档案管理的将人工智能技术、决策分析技术和数据库技术相结合的智能化管理信息系统的模型,介绍了基于C/S(客户机/服务器)模式网络MIS档案管理信息系统应用于社会保险领域的结构和功能,分析了网络环境中系统实现的一些设计策略,并给出了社会保险档案管理信息系统的具体实现。     

Enhanced teaching and student learning through a simulator-based course in chemical unit operations design

This paper illustrates a teaching technique used in computer applications in chemical engineering employed for designing various unit operation processes, where the students learn about unit operations by designing them. The aim of the course is not to teach design, but rather to teach the fundamentals and the function of unit operation processes through simulators. A case study presenting the teaching method was evaluated using student surveys and faculty assessments, which were designed to measure the quality and effectiveness of the teaching method. The results of the questionnaire conclusively demonstrate that this method is an extremely efficient way of teaching a simulator-based course. In addition to that, this teaching method can easily be generalised and used in other courses. A student's final mark is determined by a combination of in-class assessments conducted based on cooperative and peer learning, progress tests and a final exam. Results revealed that peer learning can improve the overall quality of student learning and enhance student understanding.