网络环境下的大众阅读与服务

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。     

论文、著作管理系统的设计

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。     

Two ancient rounds of polyploidy in rice genome

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.     

《离骚》与《九章》是否为同一个时期的作品——《离骚》研究系列之四

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。     

幻的浪漫梦的真实--论苏、辛的梦幻词

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。     

Co(II)——双水杨醛乙二胺显色反应的研究与应用

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     

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

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.     

Usage patterns and social circles on Facebook among elderly people with diverse personality traits

Elderly people are exposed to information technologies to keep them in touch with younger generations. Among various technologies, social network sites (SNSs) are seldom used by the majority of elderly people. To bridge the digital divide, it is necessary to dig deeply into the minority elderly users of SNSs. This study explores usage patterns of elderly Facebook users and further investigates how their diverse characteristics influence their usage and social circles. Three findings were derived. First, a sharp digital divide on SNSs does exist, and existing elderly Facebook users are mainly the dabblers. Second, personality profiling could predict elderly people’s SNS usage behaviors. Elderly users with a high level of openness and extroversion have more friends, status updates, and group memberships, and those with a high level of conscientiousness have fewer likes and status updates. Elderly users are likely to seek insightful content on SNSs. Moreover, they may have a higher degree of emotional stability than young users when using SNSs. Third, elderly people tend to build small social circles on SNSs that “copy” the family relationship in the real world; whereas, they build large social circles with interests and hobbies that are difficult to share in the real world. Based on these results, detailed suggestions are presented for better targeting elderly people in ways that move them toward SNSs.     

课程改革进程中教师消极行为研究

教师消极行为的产生是课程改革进程中出现的必然现象。本文试图对新课程改革进程中的教师消极行为作初步简析，揭示教师消极行为的表现特征，找出它的成因，并尝试提出初步的对策思考。     

世俗情欲的浪漫升华——新生代女作家的“诗化”小说论

一部分新生代女作家的“身体写作”具有“诗化”特征。这或诡异、或疯狂的“诗化”风格与古代的“艳诗”在精神上相通,又具有现代派文学集唯美与溢恶于一体的气质。她们对“飞”的感觉的集中渲染让她们的文字也产生了节奏飞快、高速旋转的效果。因此,她们独具特色的“诗化”小说丰富了我们对于“诗化小说”这一文体的理解。