《化学教育》2005年载文和作者的统计分析

运用文献计量学的统计方法,对《化学教育》2005年出版的共12期载文和作者进行了统计分析,从中归纳了我国化学教育教学研究的发展状况以及《化学教育》在载文和作者等方面的特点。     

2003年《化学教育》载文情况的统计分析

运用文献计量学的统计方法,对2003年出版的 12期《化学教育》载文情况进行了统计分析,并从中归纳了我国化学教育研究的发展状况以及《化学教育》在载文和作者等方面的特点。     

近三年《化学教育》载文和作者的情况分析报告

运用文献计量学的统计方法,分析了《化学教育》近三年出版的共36期载文和作者等方面的情况,从中总结了我国化学教育教学研究的发展状况以及《化学教育》在载文和作者等方面连续生长的特点。     

2005～2006年《化学教育》载文和作者的统计分析与比较

运用文献计量学的统计方法,对2005～2006年《化学教育》出版的共24期载文和作者进行了系统分析与比较,从中归纳了我国化学教育教学研究的发展状况以及《化学教育》在载文和作者等方面连续生长的特点.     

2006年3种中等化学教育类期刊载文和作者的统计分析与比较

运用文献计量学的统计方法,对2006年《化学教育》、《化学教学》、《中学化学教学参考》(简称《中化参》)3种中等化学教育类期刊载文和作者的情况进行统计分析与比较,从中归纳我国中等化学教学研究的发展状况以及3种期刊在载文和作者等方面的各自特点。     

美国《化学教育》"Research: Science And Education"专栏载文的调研

调阅、梳理了美国《化学教育》"研究:科学与教育"专栏的载文,分析了国际化学教育研究所体现出的关注学生概念学习、注重学习过程、重视改进研究方法的发展趋势。     

2009—2018年《化学教育》“问题讨论与思考”栏目分析与研究

以 2009—2018 年《化学教育》期刊“问题讨论与思考”栏目的载文为研究对象,采用系统查阅年度总目录与阅读原始文献相结合的方法,从载文的数量、内容、作者、引文等 4 个方面进行统计分析。发现近 10 年《化学教育》“问题讨论与思考”栏目的年均载文量为33篇;研究内容涉及化学知识讨论、教学讨论、实验探究、教材讨论、习题讨论等;载文作者所属地区、机构分布不均衡;研究方法以思辨和化学实验为主;作者之间的合作研究成为一种趋势;引文数量呈现逐渐增多的趋势。     

《化学教育》中化学史文献的统计分析——基于2007—2016年载文的研究

以2007—2016年《化学教育》杂志中“化学史与化学史教育”栏目中文章作为研究分析对象,从载文情况、作者情况、引文情况等3个方面进行统计,分析近十年来化学史教育教学研究的趋势和薄弱环节,并提出几个参考性的建议。     

氢氧化亚铁制备实验的再改进

《化学教育》2010 年第3 期第84 页载文《硫酸亚铁溶液的制备与性质实验的再改进》,实验装置的改进创造了实验的无氧环境,Fe2+ 溶液制备方法的改进解决了Fe2+ 溶液中溶解氧的干扰问题,使得实验现象更加理想。     

2000-2018年我国中学化学教育研究的热点与趋势——基于《化学教育》载文的可视化分析

以《化学教育》为研究对象,对近20年的载文进行信息可视化分析,通过绘制关键词共现知识图谱以及关键词时区图,分析并展现2000年以来我国中学化学教育的研究脉络,从整体上把握其研究热点和发展趋势,为后续化学教育的研究和实践提供一些有益的参考。     

Neutral diterpenoids of oleoresins of five species of conifers of Transcarpathia

The compositions of the neutral diterpenoids of the oleoresins of five species of conifers growing in the Transcarpathia have been studied. It has been found that the oleoresins ofAbies alba M.,Larix decidua M., andPicea excelsa L. contain more than 50% of neutral diterpenoids. The group and qualitative compositions of the oxygen-containing diterpenoids have been determined. In the oleoresins ofAbies alba,Picea excelsa, andPicea abies tertiary alcohols — cis-abienol and isocembrol — predominate, while inLarix decidua the main component is the hydroxy ester larixyl acetate. Primary alcohols related to the resin acids have been found in all the oleoresins investigated. Features of the distribution of diterpenoids according to the species of conifers have been revealed. The results obtained are necessary for the chemotaxonomy of conifers of the family Pinceae.Novosibirsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR. Translated from Khimiya Prirodynkh Soedinenii, No. 6, pp. 812–816, November–December, 1988.     

利用手持技术改进测定乙醇分子结构实验

利用压强传感器代替排水集气法,改进测定乙醇分子结构实验的仪器装置,并探索最佳反应条件。另外,设计两个空白实验,结合压强变化曲线对实验误差进行相关讨论。     

光谱仪测试范围的扩展

由于石化行业的生产需要，其材质的使用具有多样性和广泛性，经常会出现顾客委托的测试样品的一个或几个元素跨越光谱仪现有测试程序测量范围的情况。本法通过对光谱仪测试原理的认识，根据光谱仪的测试能力及标样的采集，实现了一个或几个元素测量范围的扩展，并对其测量的影响因素进行了研究。     

Dichroism of absorption and polarization of phosphorescence of molecules of the closed form of nitrobenzospirothiopyran

The spectral-polarization characteristics of absorption and phosphorescence of molecules of the initial form of nitro-substituted indolinospirobenzothiopyran were studied in oriented polyethylene films and in solutions with different polarity. An oscillator model of the electron transitions responsible for the formation of absorption and luminescence spectra was suggested. It was established that the principal differences in the spectral and photophysical properties of the compound studied and its oxygen-containing analog are associated with the fact that the electronegativity of the S atom is lower than that of the O atom. Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1143–1146, June, 1997.     

Influence of viscosity of medium on processes of oxygen quenching of excited states of mesoporphyrin

The oxygen quenching rate constants for singlet and triplet excited states of the dimethyl ester of mesoporphyrin IX increase with decreasing viscosity of the medium and reach a maximum at a viscosity of approximately 0.4 mPa·sec, after which the rate constants begin to decrease. The drop in rate constant with increasing fluidity of the medium may be related to a nonequilibrium character of the elementary act in the interaction of the reactants in the solvent cage. In viscous media such as isopropyl alcohol, isobutyl alcohol, and isoamyl alcohol, the reaction radius is greater than the sum of the radii of the reacting particles. The long-range character of these processes is due to the relatively weak dependence of the quenching probability on distance.Translated from Teoreticheskaya i Éksperimental'naya Khimiya, Vol. 25, No. 2, pp. 161–167, March–April, 1989.     

Effect of the Method of Modification of Zeolite X on Selectivity of Catalytic Methylation of Toluene

Theoretical and Experimental Chemistry - The effect of the method of modification of catalysts based on zeolite X by cesium and magnesium cations (ion exchange and impregnation) on the selectivity...     

Determination of heats of detonation and influence of components of composite explosives on heats of detonation of high explosives

The heats of detonation of 20 simple high explosives and explosive mixtures were determined by means of an adiabatic detonation calorimeter designed by the authors. The results indicated that the performance of the instrument was reliable and the experimental data were very accurate. For explosive mixtures, there was a linear accumulative relationship between the heats of detonation of the explosive mixture and its components. Accordingly, the heats of detonation of explosive mixtures could be calculated directly from the heats of detonation of simple explosives and the characteristic heats of other components. The experiments showed that the gold or brass shell of the cylindrical charge could be substituted by a thick-walled porcelain shell, which had the advantage of cheapness.

     

Synthesis of tetrabenzoporphins of the basis of isoindoline

Chemistry of Heterocyclic Compounds -