钙钛矿型铁电体的宏观效应及其应用

简要综述了铁电体的基本物理特性，并重点论述了钙铁矿型氧化物铁电体的介电响应、压电效应和热电效应，以及这些宏观功能效应使其作为相应的材料在电子、国防、医疗、航天等领域的应用。     

传统彩陶色彩文化与中国现代陶艺

论文以中国传统彩陶文化及色彩在现代陶艺的作品创作中的应用为基础,论述了中国彩陶传统装饰文化艺术与现代形态造型艺术的互补,揭示了传统彩陶艺术与现代社会人生往复流转、浑然一体、互依互生的关系。进一步阐明了把传统彩陶装饰元素当作陶瓷艺术造型主体精神的形式载体之一,创造出具有强烈民族特性的全新的中国现代陶艺作品,从而创立一种具有民族风格和独特个性的艺术语言表达形式,是中国现代陶艺家共同追求和探索的目标。     

高校女性教师职业压力状况及其影响因素分析

针对高校女性教师职业生涯不同阶段的压力状况及影响因素进行分析,并提出了一些切实可行的措施,希望对高校女性教师资源的充分利用有一些指导作用。     

乙醇玻璃化转变的介电谱研究

文章采用介电谱方法对升温过程中乙醇的复介电常数实部ε’和虚部ε″随温度T的变化进行了测量。结果表明,升温过程中在100K～180K的温度范围内ε’主要有两个变化过程Kα和Cd,而ε″也有两个变化过程Pα和Ld。     

When Glass and Metal Corrode Together,VI: Chalconatronite

ABSTRACT

Chalconatronite, Na₂[Cu(CO₃)]₂·3H₂O, is formed as a corrosion product when copper alloys are exposed to sodium carbonate solutions in the air. This also happens when metals come into contact with corroding soda glass which forms alkaline surface films in reaction with humidity from clean air. More often, substantial amounts of formaldehyde are present indoors which react to formate via the Cannizzarro reaction and accumulate over time in the films. Twenty cases of chalconatronite (including two mentioned in the literature) are reported as occurring on heritage objects with glass in contact with copper alloys: Baroque reliquaries with set glass gems, enamel on metal (sixteenth century and a modern replica of intentionally unstable composition), Christmas tree glass baubles with wires, glass buttons with metal shanks, a glass figure with a wire support, miners’ lamps, and a glass framed daguerreotype. These confirmed identifications might help conservators in investigating similar cases to shed more light on the formation conditions.     

精密陶瓷球磨球机的现状及其发展前景

目前，国内外陶瓷球超精密加工技术主要有同轴两盘磨球机和四轴球体磨球机及激光加工等三种，随着技术的发展，同轴三盘研磨方式能获得更好的精度，必将得到广泛应用．     

汽车玻璃钢化模具风栅铝片三轴加工

为了解决汽车玻璃钢化模具生产中依赖五轴机床加工的问题，提出以离散化曲面片拟合钢化模具工作型面的方法。首先根据玻璃模型的微分几何特征计算得加权平均弧长，按照等弧长等原则剖分玻璃模型，并设计风栅片的尺寸、公差，确定其技术要求；研究了风栅铝片三轴铣削加工中装夹方法、刀具选择、走刀规划以及切削参数确定方法；通过设计纵向靠尺的方法实现大量铝片的精确装配。结果表明，该方法生产出的风栅成型模具符合生产要求。     

自蔓延高温合成层状Ti_3SiC_2陶瓷的相形成过程

采用自蔓延高温合成方法,以Ti、Si、C粉为原料合成了层状Ti3SiC2陶瓷材料,用X射线衍射分析了燃烧合成产物的相组成,并结合反应物体系的差热分析和X射线衍射分析探讨了自蔓延高温合成Ti3SiC2的相形成过程,进而建立Ti-C-Si体系在自蔓延燃烧合成反应过程的物理模型.     

Simulation of the Response of Glass Window Under Blast Load

In the investigation of accidental explosion scene,the damage on the glass is one of the typical traces which can be used to decide the characteristic of the explosion source.To analyze the response of glass under the blast load,a numerical model was developed.In the model,the brittleness glass model was adopted.A 'node release' method,which had some special merits compared with the erosion method was used to simulate the rupture of the glass In the calculation,several problems which play major role in the response of the glass were discussed.The velocity and the displacement of the glass fragment were two major factors.The numerical results are very helpful for the design and hazard assessment.