酒精对蟾蜍离体坐骨神经干动作电位的影响     

翟心慧  吴清华  王志华  张永梅 《平原大学学报》2005,22(6):122-124

应用电生理方法观察了不同浓度的酒精对蟾蜍离体坐骨神经干动作电位的幅度、持续时间及传导速度的影响。结果表明：用酒精溶液浸泡蟾蜍坐骨神经干10min，低浓度（1％、2％、4％）时，动作电位的幅度和对照组相比无明显变化；中、高浓度的酒精溶液（6％、8％、10％、129／6）使动作电位的幅度显著或极显著降低。动作电位的传导速度随着酒精溶液浓度的升高而变慢，和对照组相比，10％的酒精溶液使其显著减慢（P〈0．05）；12％的酒精溶液使其极显著减慢（P〈0．01）。随着酒精溶液浓度的升高，坐骨神经干动作电位持续时间有缩短趋势，但无显著性差异。这说明酒精溶液对坐骨神经干动作电位具有一定的抑制作用。  相似文献   

少数民族地区师专数学系学生素质分析及对策(一)     

张长记  韦原奉 《河池学院学报》2002,(2)

对一所民族地区师专数学系的学生近十年的入学成绩进行抽样和方差分析 ,在做大量的数据调查和数据分析的基础上 ,从理论上寻找学生成绩‘稳步下降’的原因 ,为探求扩招情况下如何提高师专数学教学质量的对策提供理论依据 .  相似文献   

基于神经网络的体外预应力筋极限应力的预测     

杨坚  赵志曼  潘杰  唐琼 《云南电大学报》2007,9(4):83-87

鉴于影响体外预应力筋极限应力的因素较多,采用BP和RBF两种人工神经网络模拟方法进行体外预应力筋极限应力进行预测。通过和试验数据比较分析,预测结果与试验结果的相对误差均在10%以内,满足工程需要,因此,采用神经网络预测体外预应力筋极限应力是可行的。  相似文献   

Towards a European Academic Labour Market? Some Lessons Drawn from Empirical Studies on Academic Mobility   总被引：1，自引：0，他引：1  

Christine Musselin 《Higher Education》2004,48(1):55-78

In Europe, academic mobility has a long tradition which began with the birth of the European universities in the middle ages. Recently, European policies were strongly oriented towards the promotion of student and academic mobility and the creation of research networks and projects within Europe. Nevertheless, academic labour markets in Europe remain highly national and many obstacles hinder the development of European careers and the europeanisation/internationalisation of academic recruitments. Two different perspectives will be developed in this paper. First we will document the strong divergences among the national recruitment and careers processes within Europe and the problems raised by this situation. Second, we will draw on two empirical studies we conducted on academic mobility, the first one, led in 1995 in France, Germany and the UK and the second this year in France. Both studies show that most post-docs conceived their foreign experience as a personal strategy and aimed at improving their chances for recruitment in their own country. Within Europe, foreign country careers still are an exception due to accidental opportunities.  相似文献   

高校扩招对公共体育教学的影响及对策     

黄向平  赖寒  朱军 《体育科技》2003,24(3):52-55

高校扩招对高校公共体育教学产生了巨大的影响 ,带来了体育场馆设施不足 ,教师数量短缺和素质不符合时代要求 ,课外体育活动难于正常进行以及体育经费不足等问题。针对这些问题 ,采取新建与改建体育场馆相结合 ,加强师资队伍建设 ,多种手段保证课外体育活动及多渠道筹措体育经费等对策 ,为促进高校体育在高校扩招背景下的体育改革做出了相应的探索。  相似文献   

当前图书馆人才引进中的问题与对策   总被引：3，自引：0，他引：3  

彭玲玲 《图书馆学研究》2003,(8):8-10,20

本文分析了现今图书馆在人才引进中的一些问题，并针对在21世纪的新环境中如何做好图书馆的人才引进工作提出了一系列见解。  相似文献   

DJ—A型大脑机能测试系统的研制     

田宜章  于岱峰 《体育科学》1993,13(5):56-57

根据“80.8神经类型量表”研制出一种专门测试和分析人神经类型的仪器。该系统采用数字化数据输入板、计算机处理数据。使测试结果更精确、过程更简便。  相似文献   

Librarian Participation in Expanding the Pool of Potential Medical Students     

Rose Guerrieri 《Medical reference services quarterly》2013,32(1):61-72

This article reports on the results of an exploratory survey to determine if librarians actively participate in medical school student recruiting programs. It looks specifically at what librarians are doing to assist with recruitment and what biomedical career resources their libraries offer. The survey link was e-mailed to all U.S. medical school library directors, who were asked to forward it to the appropriate librarian. Out of 113 medical schools, 68 (60%) responded to most questions. Forty-three (86%) of 50 item respondents do participate in such activities, and 29 (67%) of 43 item respondents have been doing so for more than five years. Thirty-two (64%) of 50 item respondents provide resources on biomedical careers in the libraries.  相似文献   

Faculty and Librarian Perceptions of a New Faculty Purchase Program     

Julie A. Murphy  Chad E. Buckley 《资料收集管理》2013,38(3):213-225

This study explores new faculty members' and librarians' perceptions of a program that provides each new faculty member with funds to purchase materials supporting their teaching and scholarship. The article describes the results of a survey of perceptions of the faculty and librarians who have participated in the program at Illinois State University. The findings suggest that the program has not been successful as a recruitment tool but has been very valuable for establishing early and strong subject liaison relationships with new faculty members.  相似文献   

MIGRANT WORKERS IN EUROPE'S MEDIA     

《Journalism Practice》2013,7(3):282-299

The media production industries of most European countries have undergone considerable changes in the last 30 years. The de-regulation of the sector and technological changes have transformed recruitment and employment practices, with some impact on the ethnic composition of the media workforce. Based on relevant literature and the views of 68 senior journalists and media professionals in Italy, Greece, Ireland, the United Kingdom, Poland and the Netherlands, the article examines the factors—impeding and facilitating—that determine migrant employment in the European media. It highlights the many aspects of the recruitment process and the nature of media work that can pose additional barriers to those outside the mainstream of society.

For a full explanation of the methodology of the research project, please see the introduction in this themed section: http://dx.doi.org/10.1080/17512786.2012.740213.  相似文献