地方性高校教材建设初探

提出了地方性高校教材建设应包含的基本内容,认为:地方性高校教材建设应侧重于详细的教学大纲的编写和参考书目的编订;硬性规定学生入手一册同样的统编教材的做法是有害的,对于基础课程,教师应给学生指定几套参考书,专业课程要给学生予丰富的文献资料;适当引用国外优秀教材、改革教材管理机构是必要的.     

Functional Nanostructures and Dynamic Materials through Self-Organization

1 Results Supramolecular chemistry is actively exploring systems undergoing self-organization.The design of molecular information controlled,“programmed“and functional self-organizing systems provides an original approach to nanoscience and nanotechnology.The spontaneous but controlled generation of well-defined,functional molecular and supramolecular architectures of nanometric size through self-organization represents a means of performing programmed engineering and processing of functional nanostruct...     

如何在材料力学实验中提高学生的学习兴趣

文章分析了材料力学实验的现状和目前存在的问题,针对性地进行了实验教学改革的探索,并应用于实验教学当中,取得了良好的教学效果。     

Study on Ceramic Cutting by Plasma Arc

Engineering ceramics are typical difficult-to-machine materials because of high hardness and brittleness. PAC (Plasma Arc Cutting) is a very important thermal cutting process and has been successfully used in cutting stainless steel and other difficult-to-machine alloys. PAC‘s application in cutting ceramics, however, is still limited because the most ceramics are not good electronic conducts, and transferred plasma arc cannot be produced between cathode and work-piece. So we presented a method of plasma ...     

油溶性银漂染料的合成及性能研究

合成并鉴定了黄色、品红色及青色共１１个油溶性偶氮染料，研究了染普在溶剂中的光谱性质和油溶性，结果表明，各染料色光纯正、有害吸收少，分子支链度大的染料Ｙ－２、Ｙ－６等具有良好的油溶性，可望用于银漂感光材料。     

Cutting tool materials for high speed machining

High speed machining (HSM) is one of the emerging cutting processes, which is machining at a speed significantly higher than the speed commonly in use on the shop floor. In the last twenty years, high speed machining has received great attentions as a technological solution for high productivity in manufacturing. This article reviews the developments of tool materials in high speed machining operations, and the properties, applications and prospective developments of tool materials in HSM are also presented.     

干部、人事档案的动态材料收集浅议

干部、人事档案是组织考察、使用干部的主要依据之一,是干部工作的重要组成部分,而干部、人事档案又是在动态管理之中产生的.因此,必须加强对干部、人事档案工作的领导,明确责任,严格审查,认真核对,确保干部、人事档案收集及时、完整真实.     

中国代木包装的现状及发展研究(续)

4 今后发展代木包装的思考及研究我国代木包装虽兴起于七十年代,但在八十年代中期才受到应有的重视和较快的发展,现在在数量、品种、性能上还不能满足各方面包装的需要。随着今后国民经济的进一步发展,必然要求代木包装在数量、质量上要有一个更大的发展。为此,本文在前述对国内外代木包装分析的基础上,兹就今后发展代木包装的目标及方针,任务及规划,对策及措施初步探讨如下。     

土坯力学性能及受压本构模型研究

为获取传统土坯受压应力-应变特性,确定其数学表达式,针对湿制法和干打法制作的土坯开展了单轴抗压试验和三点抗折试验。分别从抗压、抗折强度、破坏机理以及应力-应变关系等方面分析了两类土坯的力学性能。结果表明,普通砌墙砖的抗压及抗折试验方法均适用于传统土坯,干打土坯的抗压强度为湿制土坯的3倍,抗折强度为湿制土坯的1.3倍,但湿制土坯的断裂能为干打土坯的2.5倍。受压初期,干打土坯的应力-应变曲线存在因土料压密而导致的下凹段,而湿制土坯未表现出该特性。基于两类土坯单轴受压状态下的应力-应变曲线特征,提出了土坯单轴受压本构模型,该本构模型与试验数据吻合较好,可用于土坯砌体结构的数值模拟研究。