网络环境下的大众阅读与服务     

张帆  赵满萍 《忻州师范学院学报》2011,27(2):92-94

互联网正以它前所未有的强大优势改变着人们的阅读习惯,本章从阅读内容、阅读方式、获取信息效率、阅读对象、阅读管理、阅读兴趣和阅读感受等方面分析了网络环境下阅读的优势;同时从网络信息的规范化制度化、信息资源的良莠不齐、电脑对身体的损害和利用网络阅读受经济、文化、地理位置的限制等方面指出了网络阅读的不足;最后提出了各级各类网络资源服务机构应以科学发展观为指导,为大众阅读提供优良资源环境。  相似文献   

论文、著作管理系统的设计     

杨帆  张蓉 《襄樊职业技术学院学报》2003,2(6):31-32

以大学论、作管理系统的开发为例，分析了论、作管理系统的应用需求，设计了论、作库的结构．并对具体的设计与实现方法进行了探讨。  相似文献   

Two ancient rounds of polyploidy in rice genome   总被引：10，自引：0，他引：10  

Zhang Y  Xu GH  Guo XY  Fan LJ 《Journal of Zhejiang University. Science. B》2005,6(2):87-90

An ancient genome duplication (PPP1) that predates divergence ofthe cereals has recently been recognized. We report here another potentially older large-scale duplication (PPP2) event that predates monocot-dicot divergence in the genome of rice(Oryza saliva L.), as inferred from the age distribution of pairs of duplicate genes based on recent genome data for rice. Our results suggest that paleopolyploidy was widespread and played an important role in the evolution of rice.  相似文献   

《离骚》与《九章》是否为同一个时期的作品——《离骚》研究系列之四     

冀凡 《黄石理工学院学报(人文社科版)》2006,23(3):47-49

探讨《离骚》与《九章》是否为同一时期的作品,旨在论证《离骚》的创作年代与历史背景,然这在汉代人的载论中是难以解决和论定的,故须从这两部作品的叙事内容的对比研究入手,加以论证其为同一时期的作品,方能从根本上而且极具说服力解决《离骚》的创作年代与历史背景的问题。当前,争论似乎不大,但敢于公然这样论说的学者并不多,这就是撰写此文的意义所在。  相似文献   

前瞻21世纪教育的发展主题     

杨帆 《辽宁师范大学学报(社会科学版)》2001,24(1):37-40

21世纪人类任重道远，教育作为协调人与自然、人与社会、人与人关系的实践活动，应该在环境教育，和平共处、共同发展、新道德建构和实施、人精神等方面承担起不可推卸的责任。  相似文献   

幻的浪漫梦的真实--论苏、辛的梦幻词     

李海帆  吴帆 《乐山师范学院学报》2005,20(3):13-16

文章首先简述宋人梦幻词的分期。提出苏、辛梦幻词的贡献在于苏、辛借鉴前人的表现手法，尤其是庄、骚、李白以来的浪漫主义手法、创造了梦幻词的诸多范式：天问式、游仙式、骚体式、俳谐式、遥相思念式、诡谲象喻式等。苏、辛梦幻词之异在于苏词清幽而旷达，辛词激越而悲壮沉郁。他们开拓了宋人梦幻词的表现领域，使宋人梦幻词的体式更加完美。  相似文献   

对心理健康教育纳入德育范畴的质疑     

范成祥 《教育科学研究》2006,(9):52-54

心理健康教育与德育的关系是近年来教育界探讨较多的问题。从研究的角度看,将心理健康教育纳入德育范畴会引发许多问题:使德育概念更加泛化,并使德育和心理健康教育难于区分;不利于心理健康教育按其自身的原则和规律科学实施;导致心理问题德育化与德育问题心理化。  相似文献   

Co(II)——双水杨醛乙二胺显色反应的研究与应用     

刘凡  刘志昌  张元勤  李晓燕 《乐山师范学院学报》2002,(4)

在 pH =5的邻苯二甲酸氢钾 -氢氧化钠的缓冲溶液中 ,钴 (II)与双水杨醛乙二胺形成黄色配合物 .该黄色配合物的λmax =380nm ,ε =5 .5x10 3L·mol- 1 ·cm- 1 ,Co(II)的质量浓度为 0～ 4 7mg 10ml时符合比尔定律 .本方法用于测定VB12药物中的钴结果良好  相似文献   

入侵检测系统研究     

肖海军  洪帆 《武汉职业技术学院学报》2002,1(3):46-49

本文介绍了网络入侵检测系统的基本功能。在对目前研究的入侵检测系统的分类、性能分析、技术分析的基础上，提出了一个针对网络入侵的综合解决方案，同时探讨了入侵检测系统的发展方向。  相似文献   

Allograftic bone marrow-derived mesenchymal stem cells transplanted into heart infarcted model of rabbit to renovate infarcted heart     

王建安  李长岭  樊友启  何红  孙勇 《浙江大学学报(A卷英文版)》2004,5(10):1279-1285

Objective: To investigate the directed transplantation of allograftic bone marrow-derived mesenchymal stem cells (MSCs) in myocardial infarcted (MI) model rabbits. Materials and Methods: Rabbits were divided into 3 groups, heart infarcted model with MSCs transplanted treatment (MSCs group, n=12), heart infarcted model with PBS injection (control group, n=20), sham operation with PBS injection (sham group, n=l 7). MSCs labelled by BrdUrd were injected into the MI area of the MSCs group. The same volume of PBS was injected into the MI area of the control group and sham group. The mortality, LVIDd, LVIDs and LVEF Of the two groups were compared 4 weeks later. Tropomyosin inhibitory component (Tn I) and BrdUrd immunohistochemistry identified the engrafted cells 4 weeks after transplantation. Result: The mortality of the MSCs group was 16.7% (2/12), and remarkably lower than the control group's mortality [35% (7/20) (P＜0.05)].Among the animals that survived for 4 weeks, the LVIDd and LVIDs of the MSCs group after operation were 1.17±0.21 cm and 0.74±0.13 cm, and remarkably lower than those of the model group, which were 1.64±0.14 cm and 1.19±0.12 cm (P＜0.05); the LVEF of the MSCs group after operation was 63±6%, and remarkably higher than that of the model group,which was 53±6% (P＜0.05). Among the 10 cases of animals that survived for 4 weeks in the MSCs group, in 8 cases (80%),the transplanted cells survived in the non MI, MI region and its periphery, and even farther away; part of them differentiated into cardiomyocytes; in 7 cases (70%), the transplanted cells participated in the formation of blood vessel tissue in the MI region. Conclusion: Transplanted allograftic MSCs can survive and differentiate into cardiomyocytes, form the blood vessels in the MI region. MSCs transplantation could improve the heart function after MI.  相似文献