课程资源库在文化素质教育课程中的建设与应用——以《化学与美容》课程为例

文化素质课程推动科学教育与人文教育的融合。网络空间教学为文化素质课程的普及和推广提供了很好的平台。《化学与美容》课程充分利用网络空间,在遵循规范性、学科性、针对性和适用性原则的基础上构建了课程教学资源库,既实现了优质教学资源共享,又提高了学生自主—协作学习的兴趣,为信息化教学手段在文化素质教育课程中的应用提供了经验。     

功能材料课程教学探索与实践

《功能材料》课程涉及的内容广泛、更新快,且与多种学科相关,用传统的教学模式很难满足本门课程的需要。我们结合"功能材料"课程特点与课程定位,从教学内容的选取、教学思路与目的、教学模式等方面进行了初步探索与实践,以促进该课程的教学质量和学生综合能力的提高。     

PBL与传统教学模式结合在《功能性化妆品》通识教育课程中的应用探索

功能性化妆品课程是我校受欢迎的通识教育课程。针对课程特点,我们开展了将PBL教学法与传统教学模式结合,运用于课程实践教学的探索。从PBL与传统教学模式结合的具体实施方法和实践中需要注意的问题进行了讨论。     

基于融通课程教学模式优化中学化学教学的研究

随着时代的发展与进步,传统的化学课堂教学模式,已不能适应学生的需要。在新课改的背景下,对教学模式进行革新,已成为促进当代教学发展的大趋势。融通课程的教学模式,能够有效克服传统高中化学课程教育观念滞后,以及缺乏各学科间的知识融通,从而无法适应社会上对具有化学学科核心素质人才的需要等问题,从而有效提高了化学课堂效果与质量,增强了学生的学习主动性。融通课程教学模式,有多种融通方式。主要对学科和师生融通的融通教学模式进行了研究,探寻基于融通课程教学模式优化中学化学教学的方法,进一步深化教学体系改革。     

《高分子物理》理论与实验课程一体化教学模式初探

《高分子物理》课程采用传统的理论与实验分开的教学模式,存在＂重理论、轻实验＂的缺点,影响学生创新能力的培养。本文介绍了《高分子物理》理论与实验课程一体化教学模式在我校的初步尝试,文中对一体化教学模式的特点、课程实施条件和途径进行了阐述,初步尝试表明一体化教学可调动学生积极性,加深理论与实践联系,提高教学质量。     

混合式教学模式构建现代仪器分析实验课程探讨

现代仪器分析实验课程是高等院校化学及非化学专业学生的重要基础课程之一.针对传统教学模式的弊端,提出了基于"虚拟仿真+现实"+"线上+线下"混合式教学模式,并将该模式引入到现代仪器分析实验的教学中并重新构建了这门课程,旨在打破传统教学手段与目前教学现状脱钩的这一瓶颈,提升教学质量,使这门课与时代发展相适应.     

《无机材料物理性能》课程教学模式的改革

本文以"无机材料物理性能"教学中的效果反馈,以及对该课程教学模式的思考,提出几点关于本课程中教学模式的改革。在课程中将理论与实验相结合,充分利用多媒体工具,在传统的灌输式教学模式上加入生动的案例和前沿知识,可以来提高学生学习的积极性和效率,培养学生运用"无机材料物理性能"的理论知识解决生产生活中问题的能力。     

大学化学课程混合式教学模式的实践

大学化学课程教学是非化学化工专业人才培养的重要环节,课程教学的不断完善是提升高等教育质量的关键。大学化学课程教学实践证明,采用混合式教学模式能够融合信息化教育与传统教育的优势,真正践行以学生为中心的现代教育理念,有助于培养学生能力和提高教学质量。     

课程群模式的无机化学课程教学资源的建设

目的:探讨无机化学课程教学模式与教学资源的优化与应用。方法:教学资源的整合和教学模式的优化。结果:经过教学资源的整合和教学模式的优化,该课程的教师队伍年龄、职称、学历合理、稳定。编写了课程学习指导、习题集、制作了实验教学多媒体课件、建设了标准化试题库、采取了成绩评价的多元化并逐步构建了网络教学平台。结论:初步完善了课程群模式的无机化学课程教学资源建设,为开展在线开放课程奠定了基础。     

仪器分析及实验网络课程建设与实践效果研究

为弥补仪器分析及实验传统教学的不足,基于校园网的moodle平台建设了仪器分析及实验网络课程,并采用网络课程与传统课堂教学相结合的混合教学方式开发了本门课程的设计与实践。教学实践证明,混合教学模式得到了学生的认可,学生的学习效率得到有效提高。     

乙苯,苯乙烯的生产及合成乙苯,苯乙烯催化剂的研究进展

苯乙烯是重要的石油化工原料。本文介绍了国内外苯乙烯生产的发展概况，合成乙苯，苯乙烯所用的催化剂种类，并就苯乙烯生产及催化剂的发展趋势提出了自己的观点。     

Synthesis and characterization of homopolymers and copolymers of various acrylates and acrylonitrile

Various homopolymers and copolymers of methyl acrylate, ethyl acrylate, butyl acrylate, and acrylonitrile in different feed ratios were synthesized. These were characterized by IR, ¹³C-NMR, DSC, DTA, and TGA. Spectroscopic characterization helped in differentiating copolymers of different mol ratios. Thermal analysis revealed different degradation patterns for homopolymers and copolymers. The temperature and energy changes associated with various phase transitions were dependent on the chemical composition of homo- and copolymers, as expected. © 1993 John Wiley & Sons, Inc.     

生物质气化及生物质与煤共气化技术的研发与应用

总结了生物质原料的特点及生物质单独气化的缺点;介绍了国内外生物质气化技术及生物质与煤共气化技术的研发与应用现状;分析了在此领域国内外的发展趋势与前景;概括了开展生物质与煤共气化技术研发的意义。     

Comparison of the Adhesion and Cohesion of Triblock and Random Copolymers of Styrene and Butadiene

A substantially greater detachment energy is required to strip a polyethylene tereph-thalate (Mylar) film from a styrene-butadiene-styrene (SBS) triblock copolymer compared to that for peeling from a random styrene-butadiene (SBR) copolymer. This is true even though the intrinsic interaction between the Mylar and each elastomer is expected to be similar because of their virtually identical chemical composition. It is proposed that this difference in peel strength (between the SBS and SBR) is a consequence of the much higher dissipative capacity of the former elastomer. Another manifestation of this is the higher cohesive tear strength of the SBS compared to the SBR. Extents of energy dissipation within each elastomer during detachment of the Mylar adherend are consistent with the hypothesis that the average maximum stress experience before detachment is some similar fraction of each elastomer's tensile strength.     

Electronic structures and reactivities of monometallic and bimetallic clusters of Au and Cu

The variation of the Au 4f binding energy of Au clusters with the cluster size has been established by measuring the binding energies of clusters whose size distributions were independently determined by HREM and STM. The binding energy increases significantly when the cluster size is less than 2 nm. Au-Cu bimetallic clusters of the composition Cu₃Au have been deposited for the first time on carbon substrates. The shifts in the core level binding energies of the bimetallic clusters show the effect of alloying in the case of large clusters, but show effects of both alloying and cluster size in the case of the small clusters. The interaction of CO with Cu₃Au clusters is stronger than with a bulk Cu metal. The interaction of CO with small Cu clusters also seems to be stronger than with bulk Cu or with large Cu clusters.     

钾盐资源及钾肥供需情况分析及预测

阐述了国内外钾盐资源及钾肥生产现状,对国内外钾盐的供需形势进行了分析及预测,从资源、原材料、国际市场三方面提出了解决我国钾盐短缺的措施。     

Kinetics and Mechanism of Oxidation of Mono- and Polyacetals

Abstract

Kinetics and mechanisms of oxidation of 6 acetals by molecular oxygen and ozone in liquid phase have been studied. Reaction with molecular oxygen (70°C, 15–16 hr) leads to the formation monoethers of the corresponding glycols with 68–90% selectivity. Salts of metals and complexes with crown-ethers have increased the reaction rate significally. Ozone have reacted with acetals with formation similar products. The mechanisms of intermediate stages have been proposed.     

Wetting properties of homopolymers and copolymers of pentafluorostyrene and methylacrylate and homopolymer blends

Polypentafluorostyrene (PPFS), polymethylacrylate (PMA), and poly(pentafluorostyrene-co-methylacrylate), poly(PFS-co-MA) were prepared and the wetting characteristics of polymer blends of PPFS and PMA were compared with that of poly(PFS-co-MA) via contact angle measurements. The critical surface tension of polypentafluorostyrene was found to be 22.6 dyne/cm, which is comparable to the value reported for polytrifluoroethylene (22 dyne/cm). The critical surface tension of poly(PFS-co-MA) is not linearly related to its composition. The polymer blends of PPFS and PMA exhibit significant surface enrichment of the fluoropolymer. The harmonic-mean method¹ was employed to determine surface tensions of these polymers and many known polymers. It is found that the method produces useful surface tension data provided the contact angle values are derived from testing liquids of dissimilar polarity.     

责任和责任心的涵义与结构

责任是人应主动承担的角色义务和对其因过失所造成后果应承担的责罚.有两层涵义:一是义务;二是后果.责任心是个体自觉做好分内事务和履行道德义务的心理倾向,是个性心理品质成分中自我特征维度上的重要内容.责任心具有两个方面的涵义:一是角色分内职责;二是角色道德义务.责任心是一种通过责任认知、责任个性和责任适应的动态形式表现出来的静态品质,责任心是责任心过程结构与责任心关系结构相互制约、相互影响的统一体.