关于师范学院图书馆迎接高校本科教学工作水平评估的几点思考

图书馆作为教学、科研的重要服务部门,在普通高等学校本科教学工作水平评估中占有一定的权重。结合评估指标和工作实践,论述高校图书馆应抓住评估契机,积极争取外部资金,充分挖掘内部潜力,努力提高服务质量,促进图书馆的建设与发展。参考文献8。     

论企业知识网络能力的培育

就本质而言,知识网络是一种社会网络,也是企业的一项基本的动态能力.企业知识网络能力的培育需要构建知识网络,同时,还需要领导参与、知识文化、信息网络等保障性措施.本文尝试对企业知识网络能力培育的相关问题进行初步探讨.     

Microfluidic chip for fast bioassays��evaluation of binding parameters

A seven channel polystyrene (PS) microchip has been constructed using a micromilling machine and a high-temperature assembling. Protein A (PA) has been immobilized by a passive sorption on the microchannel walls. Two bioaffinity assays with human immunoglobulin G (hIgG) as a ligand have been carried out. (i) PA as the receptor and fluorescently labeled hIgG (FITC-hIgG) as the ligand, (ii) PA as the receptor with hIgG as the quantified ligand and fluorescently labeled goat anti-human IgG (FITC-gIgG) as the secondary ligand. One incubation step of the assays took only 5 min instead of hours typical for enzyme-linked immunosorbent assay applications. Calibration curves of the dependence of a fluorescence signal on the hIgG concentration in a sample have been obtained in one step due to a parallel arrangement of microchannels. A mathematical model of the PA-FITC-hIgG complex formation in the chip has been developed. The values of the kinetic constant of the PA-FITC-hIgG binding (k_on=5.5 m³ mol⁻¹ s⁻¹) and the equilibrium dissociation constant of the formed complex (K_d≤3×10⁻⁶ mol m⁻³) have been obtained by fitting to experimental data. The proposed microchip enables fast evaluation of kinetic and equilibrium constants of ligand-receptor bioaffinity pairs and the ligand quantification. As the use of microfluidic chips for immunoassays is often limited by price, we used procedures and chemicals that allow for an inexpensive construction and operation of the microdevice, e.g., temperature assembling as a fabrication technique, detection via an ordinary digital camera, nonspecific polystyrene as a substrate, passive sorption of biomolecules as an immobilization technique, etc.     

基于技术标准的信息产业竞争政策分析

信息产业中的法定标准和事实标准中都埋藏着大量的专利技术，从而为控制技术标准的企业带来了巨冬的市场支配力。如果这些技术标准中的知识产权被滥用或垄断，就会阻碍市场的公平竞争。就国内外信息产业中围绕技术标准的竞争行为与竞争政策进行分析，从而为我国信息产业竞争政策的制定与完善提供参考。     

Contents Volume 7 2001

Volume Contents

Contents Volume 7 2001     

校园网中VLAN的设计与实现

本从分析传统的校园网中逻辑子网之间的通信入手，介绍了在邢台职业技术学院校园网中采用了三层交换机中划分VLAN的办法，来解决子网之间的通信和安全以及广播风暴等问题。     

试析变压器节能增效的措施

单台变压器运行时，为使效率最高，其负荷的大小必须在一定的范围内；多台变压器并联运行时，为使效率最高，要根据负荷的大小及变化情况确定变压器运行的台数，这样才能做到使变压器经济运行。针对变压器的实际使用情况，提出了具体的节能增效的措施，并进行了相应的理论分析。     

A tale of Wootz steel

The extraordinary romance and thrilling adventure associated with the tale of wootz steel shows how Indian metallurgists were the world leaders in antiquity in the manufacture of this legendary high-grade steel. In many ways this material was brought to global attention by the writings of Cyril Stanley Smith. Modern metallurgy and materials science rest on the foundation built by the study of this steel during the past three centuries.     

论旅游合同纠纷的精神损害赔偿

传统观点认为,违约之诉并不能提起精神损害赔偿的请求。结合我国的立法、司法实践和国外的违约精神损害赔偿的比较法考察,在旅游合同这类特殊性质的合同违约中,应当确立精神损害赔偿制度,以加强对旅游者的保护,并为未来我国的旅游立法工作提供理论支持。     

Imbalanced free radicals and antioxidant defense systems in schizophrenia： A comparative study

Objective： To examine changes of blood oxidative-antiovidative level in schizophrenic patients and its relationship with clinical symptoms. Methods： Forty-six Chinese patients met DSM-IV （Diagnostic and Statistical Manual of Mental Disorders-iV） criteria for schizophrenia and fifty age- and sex-matched healthy controls were enrolled in the present study. Baseline psychiatric symptom severity was assessed with brief psychiatric rating scale, positive and negative syndrome scale on the blood draw day. Fresh blood samples were collected to measure levels of nitric oxide and lipid peroxide in plasma as well as activities of superoxide dismutase, catalase and glutathione peroxidase in red blood cells by spectrophotometric assays simultaneously. Results Comparison of the biochemical parameters indicated that the level of nitric oxide and lipid peroxide increased in patient group, which represented a positive correlation with positive scale scores; while the activities of three critical enzymes decreased and showed a negative linear correlation. Conclusion： This study showed that there are dysregulation of free radical metabolism and poor activities of the antioxidant defense systems in schizophrenic patients. Excess free radicals formation may play a critical role in the etiology of schizophrenia. Using antioxidants might be an effective therapeutic approach to partially alleviate or prevent the symptoms of schizophrenia.