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现代基础化学课程作为工科化学系列课程改革项目的一个环节,在我校已经运作了五年。本主要介绍和分析了该课程化学原理部分的教学中与物理化学有关内容进行衔接的问题,同时也提出了在课程改革中应当注意的方面。 相似文献
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在21世纪即将来临之际,随着科学技术的迅猛发展,学科之间交叉渗透趋向综合,社会经济发生急剧的变革,我国高等教育正面临着重大的挑战。是挑战也是机遇,只有积极投入改革定能培养出适应这种迅猛发展和急剧变化的高素质、有竞争力、有创造力的优秀人才,其中包括优秀的工程技术人才。国家教委不失时机地抓高等教育的全方位改革,及时推出面向21世纪教学内容和课程体系改革的研究计划,工科化学系列课程改革(化工类)就是其中的一项。在工科化学系列课程改革的策划和进行过程中,我们走访了本校大部分化工类专业(化学工程、高分子化工、精细化工、生物化工、环境化工……)的专家和学者,就基础化学系列课程改革的若干问题进行了调查和座谈。深刻感受到工科化学系列课程的改革,日益受到广大专业教育工作者的关注。工科化学系列课程的改革在面向21世纪高等工程技术人才培养中的地位和作用,自然科学课程中的素质教育以及现代科学技术发展对课程结构改革和课程教育的渗透等已成为大家共同关心的问题,经调查研究,现就上述问题谈一些我们的认识和思考。 相似文献
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Pre-dispersed solvent extraction (PDSE) was used to extract quercentin from its diluted solution. The influences of temperature, phase volume ratio (PVR), concentration of sodium Dodecyl benzene sulphonate and pH value etc. on the extraction efficiency were examined. It is found that, compared with traditional extraction techniques under the same condition, a higher extraction productivity can be obtained by PDSE. The stability of colloidal liquid aphrons plays an important role in this process. In a certain scope, the extraction efficiency increases with PVR. Excessive amount of solvent is not much helpful. A new analytical method by using ultraviolet spectrometer to determine the concentration of quercentin is established. 相似文献
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简要介绍了ActiveX控件技术,阐述了使用该技术在Delphi中增加一个TShockwaveFlash构件来支持Flash电影的方法。 相似文献
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Systematic comparison between computer simulation results and those predicted by Scheutjens-Fller(SF)self-consistent-field theory is presented for the adsorption of diblock copolymers from a non-selective solvent on attractive surface.It is shown that although SF is a mean-field theory,it can qualitatively describe the adsorption phenomena of diblock copolymers.However,systematic discrepancy between the theory and simulation still exists.The approximations inherited in the mean-field theory such as random mixing inside a layer and the allowance of direct back folding may be responsible to those deviations. 相似文献
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Pre-dispersed solvent extraction (PDSE) was used to extract quercentin from its diluted solution. The influences of temperature, phase volume ratio (PVR), concentration of sodium Dodecyl benzene sulphonate and pH value etc. on the extraction efficiency were examined. It is found that, compared with traditional extraction techniques under the same condition, a higher extraction productivity can be obtained by PDSE. The stability of colloidal liquid aphrons plays an important role in this process. In a certain scope, the extraction efficiency increases with PVR. Excessive amount of solvent is not much helpful. A new analytical method by using ultraviolet spectrometer to determine the concentration of quercentin is established. 相似文献