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在初中生环境素养调查的基础上,对当前初中生环境素养状况进行统计和分析,并提出相应的建议和措施:创新环境教育实施模式,提高环境教育实施效率;提供系统培训,加强校际合作;建立家校联系合作,提高家长环境素养;创新评价体系,挂钩升学条件。 相似文献
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本文从环境教育角度对教育部制定的《全日制义务教育化学课程标准 (实验稿)》的前言、课程目标、内容标准和实施建议 4部分做了分析和讨论。 相似文献
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本文从环境教育角度对教育部制定的《全日制义务教育化学课程标准(实验稿)》的前言、课程目标、内容标准和实施建议4部分做了分析和讨论。 相似文献
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本文详细回顾了新中国成立以来高等学校化学类专业基础课程教材编写与出版的历史,着重介绍了高等教育出版社所经历的教材建设阶段及具有代表性的建设成果。在此基础上,以高等教育出版社现有的教材为例,综合分析了多种教材出版形式对课堂教学模式的影响和信息技术的发展对传统纸质教材出版的影响与改变。文末,对今后如何有效提升国内同类教材的编写和出版质量,更好地服务于我国高等学校化学类专业的人才培养事业,提出了若干建议。 相似文献
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-年教育部高等学校化学类专业教学指导委员会 《大学化学》2017,32(8)
正为了保证化学实验教学水平,提高本科人才培养质量,2006-2010年教育部高等学校化学类专业教学指导分委员会于2011年制订并出版了《高等学校化学类专业指导性专业规范》(以下简称《规范》),规定了化学类专业实验教学基本内容。受教育部委托,2013-2017年教育部高等学校化学类专业教学指导委员会(以下简称教指委)又于2015年完成了《化学类专业教学质量国家标准》(以下简称《标准》)的制订,简要阐述了化学类专业实验教学的基本内容和教学要求。 相似文献
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由国家自然科学基金委员会化学科学部主办,高等学校化学教育研究中心和教育部高等学校化学与化工学科教学指导委员会化学类专业教学指导分委员会协办,厦门大学现代分析科学教育部重点实验室承办的“全国分析化学学科人才培养与教学建设发展战略研讨会”于2008年3月14至17日在 相似文献
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21世纪我国课程改革的重大课题──环境教育 总被引:3,自引:0,他引:3
本文对"环境教育"的概念作了研究和界定,系统地探讨了环境教育的理论依据,阐述了我国课程改革和开设环境教育课的概略构想。 相似文献
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Electrochemistry is one of the most advanced techniques for monitoring neurochemical activities in the living brain because electrochemical approaches bear the advantageous features of high spatial and temporal resolutions, which facilitate its tremendous potential in investigating the highly spatially heterogeneous brain system and the fast dynamics of neurochemical activities. On the other hand, since brain is the most complicated organ in the sense of its numerous kinds of neurochemical species, high selectivity is always required for any analytical methods that approach the brain. In this review, we will discuss various electrochemical methodologies to achieve selective detection of neurochemicals in mammalian brain and the strategies developed mainly by our group towards selective monitoring of both electrochemically active and inactive neurochemicals. At the end, we will discuss possible solutions towards brain mapping of neurochemical species and combination of neurochemical detection strategy with electrophysiology as the direction of future development of electroanalysis in living brain. 相似文献
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Reactions in droplets in microfluidic channels 总被引:5,自引:0,他引:5
Fundamental and applied research in chemistry and biology benefits from opportunities provided by droplet-based microfluidic systems. These systems enable the miniaturization of reactions by compartmentalizing reactions in droplets of femoliter to microliter volumes. Compartmentalization in droplets provides rapid mixing of reagents, control of the timing of reactions on timescales from milliseconds to months, control of interfacial properties, and the ability to synthesize and transport solid reagents and products. Droplet-based microfluidics can help to enhance and accelerate chemical and biochemical screening, protein crystallization, enzymatic kinetics, and assays. Moreover, the control provided by droplets in microfluidic devices can lead to new scientific methods and insights. 相似文献
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The toxicity of inorganic trivalent arsenic for living organisms is reduced by in vivo methylation of the element. In man, this biotransformation leads to the synthesis of monomethylarsonic (MMA) and dimethylarsinic (DMA) acids, which are efficiently eliminated in urine along with the unchanged form (Asi). In order to document the methylation process in humans, the kinetics of Asi, MMA and DMA elimination were studied in volunteers given a single dose of one of these three arsenicals or repeated doses of Asi. The arsenic methylation efficiency was also assessed in subjects acutely intoxicated with arsenic trioxide (As2O3) and in patients with liver diseases. Several observations in humans can be explained by the properties of the enzymic systems involved in the methylation process which we have characterized in vitro and in vivo in rats as follows: (1) production of Asi metabolites is catalyzed by an enzymic system whose activity is highest in liver cytosol; (2) different enzymic activities, using the same methyl group donor (S-adenosylmethionine), lead to the production of mono- and di-methylated derivatives which are excreted in urine as MMA and DMA; (3) dimethylating activity is highly sensitive to inhibition by excess of inorganic arsenic; (4) reduced glutathione concentration in liver moderates the arsenic methylation process through several mechanisms, e.g. stimulation of the first methylation reaction leading to MMA, facilitation of Asi uptake by hepatocytes, stimulation of the biliary excretion of the element, reduction of pentavalent forms before methylation, and protection of a reducing environment in the cells necessary to maintain the activity of the enzymic systems. 相似文献
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