在化工原理实验教学中培养学生工程素质及创新能力的改革与实践

针对当前化工原理实验教学与化工专业人才需求现状,开展了在实验教学中培养学生工程素质及创新能力的改革与实践。通过在实验教学中渗透工程观点、开放化工原理实验室、开设综合性实验及建设化工仪表设备展示区等途径,显著提高了化工专业本科生综合能力,对培养学生的工程观念、应用观念和分析解决工程实际问题的能力奠定了重要的基础。     

TRIZ创新理论在化工原理实验创新教学中的应用研究

在应用型人才培养模式下,对于化工相关专业高校更加重视学生工程素质和创新能力的培养。结合传统化工原理实验教学体系中存在的问题,将TRIZ创新理论应用到化工原理实验创新教育体系中,运用TRIZ理论来提高化工专业学生的创新能力和工程意识,有利于推进化工原理实验教学改革和创新,从而提高化工原理实验教学水平。     

ASPEN PLUS在化工实验教学和科研中的应用

随着计算机技术的发展,ASPEN PLUS作为较高水平的实验仿真软件近年来在高校化工实验教学中备受青睐。从化工专业特点的实际出发,提出目前化工实验教学所存在的一些问题,同时对ASPEN PLUS模拟软件进行概括,重点论述其在化工实验教学和科研生产中的应用。实践表明,ASPEN PLUS是降低化工实验教学成本,培养学生实际动手能力,提高设计安装和科研创新能力的有效工具。     

大学生安全意识培养在化工原理实验教学中的自然融入

针对化工实验室及化工生产中安全事故频发问题,分析安全事故发生的主要原因是人为因素中的不安全行为.结合化工原理实验教学中所遇到的各种安全问题,阐述安全操作和事故发生之间的关系,强调安全管理和规范操作在化工实验及化工生产中的重要性,在化工原理实验教学过程中潜移默化地培养大学生的化工安全意识.     

OBE理念在化工原理实验教学中的实践与探讨

化工原理实验是化工原理课程的一个重要教学环节,对于培养学生的动手操作能力及工程观点起到重要作用。根据化工原理实验教学的特点,结合长期的教学实践,从化工原理实验教学理念的转变、课程体系的构建以及评价方式的改革等方面对OBE理念在化工原理实验教学中的应用进行了初步探讨。实践证明,OBE可有效促进学生工程应用能力的培养,这也为化工原理实验教学改革和人才培养模式的创新提供了新的参考。     

突出工程能力的实验教学体系的构建—以化工与制药专业为例

对武陵山区湖北民族学院化工与制药专业实验教学进行了改革实践。以工程设计和实践创新能力培养为核心,强调了工程能力培养在人才培养和满足社会发展的重要性,阐述了化工与制药实验教学体系构建的目标,构建了突出工程能力的化工与制药专业实验教学体系。     

探索化工实验教学改革的几点体会

从化工学科的特点和人才培养目标出发,较为系统地对化工实验教学作整体优化设计。提出了更新实验教学内容、改进实验教学模式、引进计算机仿真实验、加强化工实验室建设等一系列改革措施,以提高化工实验教学质量,促进具有创新能力和工程实践能力的化工专业人才的培养。     

研究型实验教学中工程观念的培养

“化工原理实验”是一门实践性、工程性都很强的应用课程,在教学实践中,应注重培养学生的工程观念和工程意识,提高分析工程问题、解决工程问题的能力。将工程观念贯彻于化工原理研究型实验教学的各个环节中,探讨了化工原理研究型实验教学对培养学生的化工工程观念的重要作用与具体做法。     

化工原理实验教学中的问题与改革探讨

化工原理实验是化工原理课程的实践应用,是对课堂教学内容的验证和深化,对培养学生的工程实践能力和建立工程概念起着举足轻重的作用。文章针对化工原理实验课程的特点和实验教学过程中出现的问题进行了分析、总结,并从实验预习、实验教学内容、实验教学方法和实验室开放等方面探讨了化工原理实验教学的改革思路。     

工程认证背景下化工原理实验教学改革

化工原理实验实践性强,为培养学生的工程观念、创新能力、实践动手能力和应用所学的化工原理理论知识分析、解决工程实际问题的能力,必须在化工原理实验教学中注重学生工程能力的培养,将工程观念融入实验教学的各个环节,构建基于"OBE"教育理念的实践教学中心提出实验教学内容层次化、开发实验装置、中试规模实训规模等改革措施。     

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.