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由生命的化学编辑部主办的生命网站,已在近期开通。该网站主要提供包括本刊在内的有关生命科学主要期刊的目录预告,并通过与有关网站的链结浏览期刊的全文。另外,该网站拟为生命学科的全国性学会发布会议通知和消息,开展科普教学活动等。生命网站的网址为:http://www.life.ac.cn,欢迎访问。(本刊讯)生命网站开通 相似文献
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随着信息技术在各学校的普及与应用,学科网站成为实现信息技术与学科教学整合的一个重要途径。本文先简单介绍了部分信息技术学科网站的基本情况,接着分析了我国信息技术学科网站的基本内容,最后总结了我国信息技术学科网站所具有的主要功能。 相似文献
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目的 明确现阶段我国公立医院披露的核心要素,了解北京市公立医院经网站披露的现况和问题,为完善政府视角下医院社会责任信息披露提供相应的建议。方法 以政策文件计量分析法初步确定政府视角下现阶段公立医院社会责任信息披露的要素,辅之以文献研究和定性访谈内容,选取能够反映公立医院社会责任的相关词汇组成数据字典,以网络搜索的方式对北京市三级医院网站进行调查,获取研究所需的信息数据资料,应用描述性统计分析方法对披露内容、水平等分别进行定性、定量描述分析。 结论 加强对医院经网站社会责任信息披露的监管;规范现阶段医院披露标准,提高医院披露社会责任信息的主动性和积极性;加快医院经网站社会责任信息披露内容的更新频率。 相似文献
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中国遗传咨询网——我国首个在线遗传咨询与遗传教育网站的开发 总被引:5,自引:1,他引:4
随着互联网的普及, 网络用户已习惯从网上获取相关资讯, 包括求医问药。由于我国的临床遗传学体系尚未完全建立, 许多遗传病患者或遗传咨询者无法得到较为专业的知识和咨询服务。为此, 建立了中国首个提供常见遗传病科普和网上遗传咨询服务的公益性网站—中国遗传咨询网(http://www.gcnet.org.cn)。该网站主要介绍遗传病的基本知识以及常见遗传病的一般情况、临床表现、诊断与防治方法、遗传方式与遗传咨询要点等。通过组织国内外50多名遗传咨询医师或医学遗传学专家, 就咨询者关心的问题, 进行一般性咨询答复, 或指导咨询者就诊。在线遗传咨询是网络时代的一种新型的方式。该网站的运行在一定程度上弥补了我国现有遗传咨询工作的不足, 有助于推动我国临床遗传学、遗传教育和人口与健康事业的发展。 相似文献
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建立学科教学网站是实现学科与信息技术整合和提高课堂教学质量的重要途径。本文先比较详细地介绍了部分学科网站的基本情况,接着总结了当前学科网站建设与应用中存在的问题,最后梳理了辅助课堂教学型学科网站的概念、特点与功能。 相似文献
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In experiments on Black Sea skates (Raja clavata), the potential of the receptor epithelium of the ampullae of Lorenzini and spike activity of single nerve fibers connected to them were investigated during electrical and temperature stimulation. Usually the potential within the canal was between 0 and –2 mV, and the input resistance of the ampulla 250–400 k. Heating of the region of the receptor epithelium was accompanied by a negative wave of potential, an increase in input resistance, and inhibition of spike activity. With worsening of the animal's condition the transepithelial potential became positive (up to +10 mV) but the input resistance of the ampulla during stimulation with a positive current was nonlinear in some cases: a regenerative spike of positive polarity appeared in the channel. During heating, the spike response was sometimes reversed in sign. It is suggested that fluctuations of the transepithelial potential and spike responses to temperature stimulation reflect changes in the potential difference on the basal membrane of the receptor cells, which is described by a relationship of the Nernst's or Goldman's equation type.I. P. Pavlov Institute of Physiology, Academy of Sciences of the USSR, Leningrad. I. M. Sechenov, Institute of Evolutionary Physiology and Biochemistry, Academy of Sciences of the USSR, Leningrad. Pacific Institute of Oceanology, Far Eastern Scientific Center, Academy of Sciences of the USSR, Vladivostok. Translated from Neirofiziologiya, Vol. 12, No. 1, pp. 67–74, January–February, 1980. 相似文献
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N. P. Vesselkin Yu. V. Natochin 《Journal of Evolutionary Biochemistry and Physiology》2010,46(6):592-603
Evolution of living organisms is closely connected with evolution of structure of the system of regulations and its mechanisms.
The functional ground of regulations is chemical signalization. As early as in unicellular organisms there is a set of signal
mechanisms providing their life activity and orientation in space and time. Subsequent evolution of ways of chemical signalization
followed the way of development of delivery pathways of chemical signal and development of mechanisms of its regulation. The
mechanism of chemical regulation of the signal interaction is discussed by the example of the specialized system of transduction
of signal from neuron to neuron, of effect of hormone on the epithelial cell and modulation of this effect. These mechanisms
are considered as the most important ways of the fine and precise adaptation of chemical signalization underlying functioning
of physiological systems and organs of the living organism 相似文献