共查询到20条相似文献,搜索用时 78 毫秒
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化学假说在中学化学教学中的运用 总被引:2,自引:0,他引:2
中学化学教学的主要目标之一是让学生掌握基础化学知识的同时掌握化学知识形成的方法——化学科学研究方法.只有掌握化学科学的一般方法,学生才能自如地、不受限制地进行思维,从而将知识学深学透,形成化学学习的能力,发展学生的创造能力. 相似文献
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分析地方文化融入中学化学的重要性与必要性,整理闽都文化中涉及的化学知识。以脱胎漆器、茉莉花茶、糖画为例,进行化学教学应用的设计,提出促进地方文化更好地融入中学化学教学的建议,旨在促进学生人文底蕴、家国情怀的培养,科学精神、辩证思维的形成。 相似文献
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对中学化学实验中的科学风险认知和决策意识进行探索与思考,分析了中学化学实验中科学风险教育的现状,探讨了在化学实验中进行科学风险认知和决策的方式,阐述了在化学实验中培养学生科学风险认知和决策意识的意义。 相似文献
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依据新的化学课程标准,学习方法和学习策略的重点,由过去只重视书本知识的学习转向强调信息的收集、加工、处理及知识的建构、应用能力的培养。因此,培养学生的科学探究能力和信息素养是目前中学化学教学中关键的一环。本文着眼于在学科教学中利用网络资源,注意化学学科的特点,运用多种教学模式,对现行条件下网络教学与化学教学的融合,进行了初步探索。 相似文献
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把化学带到生活中去,加强与社会生活的联系,使化学教学贴近学生的社会生活实际,让学生以社会生活为背景学习化学知识,并使其了解化学在现代社会生活中的价值,是20世纪90年代以来世界中学化学课程改革的重要趋势,也是当前我国基础教育课程改革中化学教学范式的重要转型。落实从生活世界向科学世界的化学教学范式的转变,完整地体现化学课程的价值,是当前我国中学化学课程改革所面临的一项重要任务。 相似文献
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为比较准确地了解国内中学化学实验学习研究的热点和重点,为今后中学化学实验学习研究提供有力的数据与支撑,利用bicomb1.0软件与IBM SPSS20.0软件,对从中国知网中查询到的2001-2013年的518篇关于实验与化学学习的相关文献进行了知识谱图的绘制.研究结果表明,我国中学化学实验学习的研究主要涉及4大领域,分别是:高中新课程,化学实验对于化学知识的学习、素质教育,创新、观察等能力的培养等相关领域研究热点;中学化学实验对于激发学生兴趣、培养学生动手能力和课外活动作为化学教学的一种方法途径的研究热点;课堂教学中,实验教学与多媒教学等教学模式的改革、创新提升教学质量的研究热点;采用化学实验微型化、绿色化等策略来强化对学生的能力的培养. 相似文献
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面向21世纪教育改革——中学化学与大学化学教学内容衔接的思考 总被引:10,自引:0,他引:10
通过研究近年来中学化学教育改革和教材变化的新特点,提出了在面向21世纪高等工科化学课程改革中,大一化学与中学化学在内容衔接上应注意的一些问题和建议。 相似文献
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阐述在化学分析中,由于增强了化学计量意识,满意地解决了粘胶基碳布质量问题,显示出化学计量在产品质量保证中的重要作用。 相似文献
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José L. Gázquez Marco Franco-Pérez Paul W. Ayers Alberto Vela 《International journal of quantum chemistry》2019,119(2):e25797
The chemical reactivity concepts of density functional theory are studied through a unified view in the temperature-dependent approach provided by the grand canonical ensemble. This procedure leads to a more general perspective that enriches our understanding of the behavior of the average energy and its derivatives with respect to the average number of electrons, provides alternative definitions for those quantities that are “ill defined” at zero temperature, and allows one to determine the relationships among reactivity concepts at any temperature. In particular, it has been found that at high temperatures the parabolic model for reactivity indicators may be justified through the electronic entropy term in the Helmholtz free energy, and that at nonzero temperatures there is an electronic heat capacity contribution to the average energy. In summary, the unified view of the temperature-dependent approach is an important complement to the zero-temperature formulation that clarifies fundamental issues therein. 相似文献
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化学生物学新前沿——化学蛋白质组学 总被引:7,自引:0,他引:7
随着包括人类在内的主要模式生物的基因组计划的完成,生命科学的研究重心转向蛋白质组的研究--在对应基因组的整体蛋白质水平上系统研究调控细胞生命活动的蛋白质.化学蛋白质组学是化学生物学在后基因组时代的最新发展:化学蛋白质组学利用化学小分子为工具和手段,以基于靶蛋白质功能的新战略探测体内蛋白质组,是新一代的功能蛋白质组学.本文综述了化学蛋白质组学的最新进展、有关技术及其在生物医学和药物研发等方面的应用,并对化学蛋白质组学的发展趋势和前景进行了讨论. 相似文献
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Vida Vičkačkaite Rolandas Kazlauskas Petras Serapinas Mudis Šalkauskas 《Mikrochimica acta》1996,123(1-4):207-215
In Lithuania research and development in chemical analysis are concentrated in scientific institutes and universities. The main fields of interest focus on biosensors, electrochemical sensors, sampling techniques and methods, study of atomization processes in spectrochemical analysis and noise evaluation in analytical measurements. Some laboratories also take part in international environmental monitoring programmes. There are about 50 researchers at the Ph.D. level engaged in analytical chemistry and several hundred technicians specialized in the field of analytical control. About one hundred chemical laboratories are active in scientific institutes, universities and factories. Specialized laboratories of chemical analysis are at the disposal of Environmental Control and Health Protection Departments and forensic investigation organizations. So far no laboratories are accredited according to the ISO 9000 norms. Special courses on analytical chemistry are offered at a few schools of higher education in the country. Only at the Department of Analytical Chemistry of the University of Vilnius specialized programmes are available to postgraduate students working towards a Ph.D. to improve their skills in current techniques of analytical chemistry. Recently the Technical Committee TC-16 for Chemical Analysis was formed within the standardization system of Lithuania. Its main activities are centered on issues such as national terminology, certified reference materials (CRMs), analytical methods and analytical quality assurance. There are numerous problems related to national terminology, the preparation of special documents in the field of analytical control and the production of regional environmental CRMs. Problems, also arise in obtaining and using CRMs for analytical instrument calibration and validation. 相似文献
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<正>Protein chemical synthesis usually relies on the use of native chemical ligation that couples peptide thioester with a Cys-peptide.A limitation of this method is the difficulty of finding an appropriate Cys ligation site in many synthetic targets.To overcome this problem,the ligation-desulfurization approach has been developed.This approach involves the use of a thiol-containing amino acid as the ligation partner.After the sequence assembly is completed,the thiol group is removed through a desulfurization reaction to generate the standard amino acids.Currently this strategy has been applied to the ligations at a number of amino acids including Ala,Phe,Val,Lys,Thr,Leu,Pro and Gln.The present article reviews the design and synthesis of these thiol-containing amino acids for native chemical ligation at non-Cys sites. 相似文献