对高校图书馆人力资源管理工作的几点认识

针对当前高校图书馆工作的实际,就图书馆组织结构、人员结构、工作组织方式、激励管理及培训等方面提出了一些思考。     

大学语文教材对象语言的选择与教材编写

本文从教材语言的特点来探讨大学语文教材对象语言的选择与教材编写问题。首先，结合教材语言的基础性与功能性特点来分析大学语文教材建设过程中存在的一些问题；其次，结合教材语言的有线性、有序性、通用性与专业性特点来具体探讨教材对象语言的选择问题；最后，结合大学语文教材语言的特点和大学语文课程的定位来谈谈大学语文教材编写的发展方向。     

黄连素的十大药理功能

本文通过查阅大量文献,综合分析近年来关于黄连素药理作用研究情况,总结出黄连素十大药理功能,旨在理顺有关黄连素的研究思路,为更加合理的研究开发和使用黄连素提供理论支持。     

我国国内旅游需求影响因素分析及规模预测

近20年来我国国内旅游业发展之所以形成高潮,一方面由于我国实行改革开放的结果,而另一方面更在于近年我国居民可支配收入和闲暇时间的增多.2003年上半年,中国旅游业遭受SARS的沉重打击,2003年下半年国内旅游业经历了迅速恢复期,2004年已经表现出很强的增长势头.就影响我国国内旅游业发展的主要因素进行分析,并对未来五年我国国内旅游发展规模进行预测.     

在CNMARC中200字段“责任者”子字段客观著录存在的弊端

探讨了应用CNMARC格式著录责任者时经常遇到的若干问题,同时提出了若干应对措施。     

A theoretical model for mid-and low-latitude ionospheric electric fields in realistic geomagnetic fields

The geomagnetic fields, which play important roles in the ionospheric dynamo, can greatly affect the global distribution of ionospheric electric fields, currents and other ionospheric electrodynamics phenomena. In the study of ionospheric electrodynamics phenomena, such as the longitudinal variations of ionospheric electric fields, the non-dipolar component of the geomagnetic fields must be taken into account. In this paper, we deduce a theoretical electric field model for ionospheric dynamo at mid- and low-latitude which adopt a modified magnetic apex coordinates system. In the new electric field model, the geomagnetic fields can be calculated from either the IGRF model or the dipole field model, and the neutral winds and conductivities are calculated based on empirical models. Then the dynamo equation for the electric potential is finally solved in terms of the line-by-line iteration method, and the ionospheric electric fields and currents are derived from the calculated potential. Our model can reproduce the main features of the ionospheric electrodynamics processes, so it will be a useful tool for the investigation of the upper atmosphere and ionosphere.     

引入青海的辽宁绒山羊双极胸导联心电图

对34只引入青海的辽宁绒山羊3个双极胸导联心电图进行了描记和分析。结果发现：①在3个双极胸导联心电图上，P波和T波的波向变化甚大；②在CⅡ和CⅢ导联心电图上，QRS综合波多数呈qR型(分别为94．2％和79．5％)，而在CI导联心电图上，QRS综合波呈现9种波型；③各波和间期的时限(s)为：P坡，0．049;P—Q间期，0．107；QRS综合波，0．059;T波，0．072;Q—T间期，0．306；Q—Tc间期，0．373;R—R间期，0．672；④被检山羊窦律不齐的发生率达64．71％。     

Preparation of organic thin-film field effect transistor

The organic thin-film field effect transistor was prepared through vacuum deposition by using teflon as di-electric material. Indium-tin-oxide acted as the source and drain electrodes. Copper phthalocyanine and teflon were used as the semiconductor layer and dielectric layer, respectively. The gate electrode was made of Ag. The channel length between the source and drain was 50 μm. After preparing the source and drain electrodes by lithography, the copper phthalocyanine layer, teflon layer and Ag layerwere prepared by vacuum deposition sequentially. The field effect electron mobility of the device reached 1.1×10ˉ6 cm2/(V@s), and the on/off current ratio reached 500.