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热化学循环及其在无机化学中的应用 总被引:1,自引:0,他引:1
在无机化学教学中,使用大量的复杂的结构计算是不可能的。许多作者都把简便的热化学循环应用到无机化学中来,计算简便,易于理解,解决了许多无机化学问题。 相似文献
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工科院校普遍采用的两种无机化学教材是华南工学院和天津大学无机教研室各自编写的《无机化学》。其中在叙述根据Born-Haber热化学循环计算氯化钠晶格能(L)时,有明显的不同,对此,学生们常提出疑问。 相似文献
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回顾了吉林大学无机化学学科教材建设的历史,从恢复高考招生制度后我国的第一部无机化学教材的编写,到该书第2版、第3版的修订,到配套的无机化学实验教材及无机化学习题集、无机化学习题解答的编写,处处凝结着无机化学教师们智慧的结晶,形成了厚重的历史积淀。随着新世纪的到来,顺应新时代要求、新兴的编者队伍在教学实践中成长壮大,编写出全新的无机化学教材。经过几代教师的努力,无机化学教材不断发展和完善,形成了多层次、系统性、立体化、高质量的精品无机化学教材体系,可满足不同层次、不同专业、不同教学计划的需求,在全国高校无机化学教学活动中发挥了重要作用。 相似文献
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针对大一学生初学无机化学时面临的理论联系实际能力不足、学习兴趣和实验操作水平较差、学习元素无机化学重死记硬背、轻理解运用等问题,我们提出在无机化学教学过程中,将无机化学原理内容分别与一些生动、具体的教学实例、趣味化学实验、元素无机化学等紧密结合,可以有效解决学生在学习无机化学时遇到的上述困难。 相似文献
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生物无机化学是近十几年来在无机化学和生物化学的边缘上发展起来的一门新兴学科。自1980年起我系在中级无机化学实验中,增加了有关生物无机化学的实验内容,如从土豆中提取酪氨酸酶(含铜酶)进行有关米氏常数的测定,引起了学生们学习生物无机化学的广泛兴趣,取得了较好的效果。 相似文献
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在综合性大学无机化学专业(专门化)教学中,高等无机化学实验占有重要的地位,日益受到广泛的重视。自五十年代无机化学进入蓬勃发展时期以来,新开辟的研究领域有生物无机化学、有机金属化学和无机固体化学等。现代科学理论和先进实验技术应用于研究无机物质的合成、结构、性能和反应,推动了无机化学迅速发展。 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