基于专业认证背景的高分子材料和工程专业英语的教学改革——评《化学专业基础英语2》

正专业英语是我国高分子材料及工程专业英语教学工作的一门高职院校的专业必修课程,高职院校的学生学习高分子材料和工程专业英语知识,有助于指导学生将大学英语基础知识向大学英语应用方面过渡。同时,对高职院校学生对高分子材料和工程专业英语资料的阅读理解能力、英语沟通能力进行提升。另外,该书也能够提升专业英语的教学质量,拓展高职院校学生在国际高分子材料及工程专业英语领域的视野,提高实际应用能力。     

浅谈电化学专业英语教学改革

大学英语由基础英语和专业英语两个部分组成.基础英语的教学目标是培养学生的听、说、读、写能力.专业英语是大学英语的高级阶段,它是以专业知识为载体,培养学生在本专业领域运用英语语言的能力.针对电化学专业英语课程教学中面临诸多间题,文章从教育管理、教材建设、教学方法、考核方式等方面提出了相应的改革措施,以期达到不断提高学生应...     

化学化工专业英语的教学改革与探讨

化学化工专业英语是大学化学工程与工艺专业本科学生的必修课程,是将基础英语的学习结合所学的专业特色进行实际应用的有效途径,旨在培养学生在解决专业实际问题中运用英语的能力。基于化学工程与工艺专业本科学生的实际情况,针对目前专业英语教学过程中存在的问题,文章探讨了如何激发学生对专业英语学习的积极性、分别制定教学内容及实施分级教学等,从而提高学生的课堂归属感。     

《化学专业英语》多维联动教学模式探讨

化学专业英语是一门建立在大学英语、化学专业核心课程基础上,旨在提高学生在化学专业领域英语应用能力的重要课程。为了使化学专业英语教学更好地适应新形势下化学专业人才培养需要并有效达成人才培养目标,本文在分析当前化学专业英语课程教学现状的基础上,结合讲授化学专业英语的实践,就如何从多维联动角度有效加强课程与课程、第一课堂与第二课堂、教与学互动配合进行尝试和探讨,以期不断提高化学专业英语教学质量,促进学生化学专业素质和语言交流应用能力的全面发展。     

高校环境科学与工程专业英语教改实践与探讨

探索以培养既精通专业,又具有较强英语实践能力的复合应用型人才为主要目标的高等院校专业英语课程教学,对提高教育质量和学生的就业竞争力具有重要的现实意义.本文在分析环境科学与工程专业英语的教学现状及存在问题的基础上,针对专业英语的特点,结合自己的教学实践及授课心得,从优化教学内容、丰富教学手段和改革考核方式三个方面提出了改进专业英语教学方法的建议与措施,为高校专业英语教学提供参考和依据.     

化工类研究生专业英语创新性教学模式改革与实践

专业英语是化工类研究生教学课程的重要组成部分,对研究生英语应用能力的培养及科研能力的提高起重要作用。文章通过分析,阐述了化工类研究生专业英语课程的特点以及该课教、学环节中普遍存在的问题,并结合教学实践,分别在完善专业英语教材建设、改革教学方法及提高学生对专业英语课程重视程度等方面提出了一些新的探索与建议。     

电化学专业英语教学初探

电化学专业英语是针对电化学专业学生开设的一门专业课,具有很强的专业性和应用性,有利于提高本专业学生实际应用英语的能力.作者结合电化学专业英语教学的实践,就电化学专业英语教学目的和重要性、选择实用的教材与教学内容、改革教学模式和教学方法、考核方法的改芏等方面发表了几点看法,并为新任课教师提出教学建议,目的在于提高专业英语的教学效果.     

化学专业英语教学体会

化学专业英语教学旨在培养学生阅读英文文献、使用英语撰写科技论文和进行国际学术交流的能力。本文主要讨论了化学专业英语教学的特点及教学中存在的问题,研究了提高化学专业英语教学质量的方法。     

化工专业英语教学思考与改革建议

大学专业英语课程是一门应用性、专业性很强的课程。本文针对专业英语实际教学中存在的问题,提出了专业英语教学的改革建议,以不断提高学生的专业英语实际应用能力,为学生今后的工作科研做好准备。     

“环工专业英语”课程的教学改革与探索

经过不断的探索和长期的教学改革和实践,逐步形成了"环工专业英语"课程的教学特色。通过教学方法、教学手段的改革、教学内容的优化、学生考核体系的改进等诸多措施提高了教学效果,通过从传统的应试教育向注重综合实际运用能力的英语素质教育的转变,提升了学生对专业英语的兴趣,锻炼了学生在专业领域的英语运用能力。     

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。     

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.     

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.     

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.     

二甲基二烯丙基氯化铵和丙烯酰胺的合成及应用

用复合引发体系(过硫酸盐-偶氮类引发剂)和脂肪胺类氧化还原体系引发,在实验室获得了单体转化率≥98%,特性粘数高于13.6 dL/g的阳离子共聚物PDA,探讨了控制聚合物分子量的影响因素.