《化工制图》课程存在的问题及对策

分析了化工制图课程教学的现状及存在问题。针对存在的问题,就化工制图课程内容、教学手段、计算机绘图和课程考试等方面进行了课程改革实践,指出:通过课程内容优化、课程实践应用、实践教学强化,及课程考核引导等过程能够有效提高课程教学效果。     

《计算机在化学化工中的应用》课程的教学改革与探索

《计算机在化学化工中的应用》是化学化工专业的一门新课程。针对课程特点,结合在本课程中的教学实践,提出了教学内容、教学方法、教学手段以及考核方式的改革和创新,激发了学生的学习兴趣,提高了学生利用计算机技术解决化学化工领域中问题的能力。     

《计算机在化学化工中的应用》课程教学探究

《计算机在化学化工中的应用》课程是培养化学工程师和研发人员的必修课程。针对课程特点,本文结合作者在《计算机在化学化工中的应用》课程的实际教学过程中的经验和体会,对课程目标、课程设计和教学内容等进行了相关探讨,并提出了教学内容和教学方法的创新,激发了学生对计算机化工软件的学习兴趣,提高学生利用计算机解决化学化工领域中的问题的能力。     

基于地方普通本科高校向应用型转变要求的化工设计教学改革与探索

化工设计是培养学生工程能力和创新能力的核心课程之一,是提高学生综合素质,使大学生向工程师转化的一个非常重要的教学环节。本文针对化工设计课程在教学中存在的问题,从理论教学、实践教学、计算机在化工设计中的应用、课程考核等方面探讨了化工设计的教学改革,从而带动地方本科高等学校完成向应用型转变。     

计算机辅助教学在独立学院化工专业仪表课程中的作用探讨

依据化工仪表课程的特点,结合独立学院化工专业的发展要求,在分析化工专业学生学习仪表课程难点的基础上,探讨了计算机辅助教学在仪表课程的学习中具有的优势与不足.     

化工原理课程数字化建设研究

化工原理是化工及相近专业的专业基础课,对培养学生的工程观念和工程分析能力具有非常重要的作用。结合化工原理教学实践进行了该课程数字化建设研究,将多媒体教学技术、仿真实验技术和计算机辅助设计技术分别应用于理论课教学、实验课教学以及课程设计方面,为提高化工原理课程整体教学水平提供参考。     

《化工设计》课程的教学探讨

化工设计是化学工程与工艺专业的专业必修课。文章结合教学实践对化工设计课程教学中存在的不足进行了总结，并提出了注重培养工程观念、相关课程以设计为主线、加强计算机的应用训练和加强化工设计的实践训练四点建议。     

应用型本科化工设计创新教学研究

化工设计是化工类专业一门重要的专业课程,从课程队伍建设、教材创新选择、实习实训教学、计算机辅助使用、参加化工设计大赛及课程评价多方面探索教学改革,以提高化工设计课程教学水平,全面提升学生的实践综合能力。     

化工设计课程教学改革建议

基于化工设计课程在培养优秀化工人才中的重要作用,结合我院目前该课程的开设情况,本文对化工设计课程的教学提出五点建议:重视化工设计课程在培养化工人才中的作用;理论课程的讲授应重视工程观念的培养;加强计算机在教学中的辅助作用;增强实践教学环节的作用;改变单一的考核方式。     

化工原理课程教学改革探讨

探讨了化工原理课程教学过程中出现的问题,从课堂教学、课外实验实践教学等方面,提出综合运用计算机辅助技术、仿真技术与传统教学模式相结合、加强过程考核、提高课内外教学效率、提高化工原理课程设计环节质量等教学实践,进而提高课程教学质量.     

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.     

实施水泵节能技改 实现节能降耗

介绍了内蒙古亿利化学工业有限公司在满足生产的前提下,对现有的循环水泵实施的节能技改及效果。     

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.