Man Is Unable to Change the Miserable Life——Analysis of the Arrangement of Four Characters in The Glass Menagerie

Tennessee Williams is considered as one of the most important American playwrights since World War II.The Glass Menagerie is his first successful drama,which describes a tragic situation of family and means to say that Man is unable to change the miserable life,no matter whatever means he try,This essay focuses on the analysis of the arrangement of the four main characters:Laura.Amanda,Jim and Tom to reveal the theme.Laura is fragile.Amanda is brave.Jim is vital.Tom is sensible.And all of them develop and try the different means to struggle against life,but fail tragically.With the evidence,the paper comes to conclusion naturally that Man is unable to change the miserable life,and he dooms to fail.     

Influence of catalyst on structural and morphological properties of TiO2 nanostructured films prepared by sol–gel on glass

Transparent TiO2 thin films have been prepared by the sol-gel method using titanium alkoxides as precursors.Thin films were deposited on glass supports by the dip-coating technique.The TiO2 layer acts as a self-cleaning coating generated from its photocatalysis and photoinduced superhydrophilicity.The crystalline structure of TiO2 films was dominantly identified as the anatase phase,consisted of uniform spherical particles of about 14-50 nm in size,which strongly depends upon catalyst-type and heat treatment temperature.Increasing heat treating temperature can lead to an increase in crystalline size.The results indicated that the sample S.S(sample derived from sol containing sulfuric acid as catalyst) exhibits superhydrophilic nature and better photocatalytic activity,which can be attributed to its higher anatase content and lower crystalline size.Morphological studies,carried out using Atomic Force Microscopy(AFM),confirm the presence of crystalline phase with such a grain size and low surface roughness.Thus,the applied films exhibiting high photocatalytic activity,superhydrophilic behavior,and low surface roughness can be used as an efficient self-cleaning coating on glass and other optical applications.     

寒冷气候区域下建筑形态对木构玻璃建筑能耗的影响

太阳辐射属于可用于采暖的可再生能源,对于寒冷及中等气候区域的大多数建筑物来说,木构玻璃建筑最佳的玻璃比例以及合适的朝向布置至关重要。这要区别于暖气候区的木构玻璃建筑,因为在暖气区,制冷是年能源需求的主导因素。因此,在这种情况下最优的解决方案是避免过热,这在关于木结构建筑的科学文献中尚未得到广泛分析。本文通过具有参数变化的箱型建筑形状(纵横比,水平和垂直延伸),各种玻璃的尺寸及其在南北立面的位置,分别对济南和兰州的特定地点进行分析。详细分析了所述参数对年能源需求的影响,并为建筑师在寒冷气候地区进行木构玻璃建筑提供系统的指导。     

基于大刃倾角刀具的玻璃高效精密切削

各种功能玻璃在高技术领域中获得了广泛应用。但功能玻璃大都硬度高、脆性大，易在已加工表面产生裂纹和凹坑。基于大刃倾角刀具的玻璃切削是一种新的加工方法，该方法能在亚毫米级的切削深度下高效地获得无裂纹和凹坑的完整表面。研究了大刃倾角刀具切削玻璃的机理及刀具参数和切削用量对已加工表面质量的影响。研究结果表明，大刃倾角刀具切削玻璃时，表面粗糙度Ra达0.21μm，表面完整性优于传统的玻璃精磨时的表面；要获得较好的已加工表面质量，刀具参数和切削用量都存在一个较佳的取值范围。     

玻璃鳞片重防腐涂料的进展

介绍了玻璃鳞片重防腐涂料的优异性能及防蚀机理,并就玻璃鳞片重防腐涂料开发的技术问题和面临的新课题作了探讨。     

激光散斑法测定玻璃的线胀系数

本文介绍在简易激光全息台上用激光散斑法测定玻璃线胀系数的实验原理方法及其开发应用前景。     

蓄热式马蹄焰玻璃窑炉微机控制系统

玻璃窑炉是玻璃制造工业中的重要设备。采用微机对玻璃窑炉热工参数进行自动检测与控制,对于进一步提高产品质量,降低能耗和延长炉龄都有着重要的意义。我们用微机对厦门市玻璃厂4＃蓄热式马蹄焰窑炉的热工参数进行检测与控制,取得了一定的经济效益和社会效益,提高了窑炉的热效率,减少了烟尘排放量,得到用户的充分肯定。     

玻璃纤维织物表面Ni-P合金涂层的制备及其导电性能研究

采用化学镀的方法在玻璃纤维织物试样表面制备了Ni-P合金沉积的非晶镀层。利用扫描电子显微镜和X射线观察及分析了镀层的表面形貌与表面结构,研究了硫酸镍的浓度对非晶镀层的沉积速率、沉积量以及导电性能的影响。结果表明,随着硫酸镍浓度的增加,沉积速率和沉积量逐渐升高,而镀层方阻值逐渐降低,导电性增加。当硫酸镍浓度20 g/L时,玻璃纤维织物镀层方阻值为1.35Ω/方,具有良好的导电性。     

硅-玻璃管阳极键合影响因素及性能研究

摘 要：试验采用阳极键合技术成功实现了硅片与玻璃管的键合,分析了玻璃管长度、温度及电极分别对电流和键合强度的影响。键合过程中电流随着温度升高而增大,但随着玻璃管长度的增加而减小。初始时电流都先迅速增大至峰值电流,然后随着时间的延长而逐渐减小。采用万能材料试验机对试样进行拉伸测试,结果显示键合强度随着玻璃管长度的增加而减小,而随着温度的升高而增大。同条件下,使用凹型电极的硅-玻璃管的强度比使用平行电极得到的强度要高,分析认为：玻璃管长度的增加导致外加电场强度减小和电阻增大,影响离子迁移及界面氧化反应,而凹型电极的使用对键合起到了促进作用。通过SEM扫描分析了硅-玻璃管的键合界面,结果表明键合界面良好。     

齿廓修形机理及其对温度场的影响

通过解析法和有限元法计算了轮齿刚度,基于刚度研究了齿廓修形机理及加工误差对载荷分配系数、传动误差和温度场的影响.结果表明:长修形在减小啮合冲击上优于短修形,当长修形指数为122时传动误差波动最小,传动最平稳.轮齿修形可以改善轮齿本体温度和闪温分布,使本体温度和闪温的高温区域从齿根、齿顶移动到齿廓中部,降低齿顶和齿根的最高温度,提高了轮齿胶合承载能力.加工误差会减弱轮齿修形效果,引起动载荷和瞬时高温,因此确定修形量时应考虑加工误差、跑合磨损以及热弹变形.