旋波媒质基本参数的一种测试方法

本文提出了直接利用旋波材料板的Ｓ参数获得其基本参数的方法。通过自由空间测量旋波材料板的反射场和透射场，可以反演得到媒质的复介电常数、复磁导率、旋波量以及透射场的轴比和旋转角，测试程序简单，结果精度高。     

Parallel BIST architecture for CAMs

A new parallel test algorithm and a built-in self test (BIST) architecture for efficient testing of various types of functional faults in content addressable memories (CAMs) are developed. The results show that efficient and practical testing with very low complexity and area overhead can be achieved     

挖掘机工作装置实验样本长度确定方法及程序系统

本文通过对某液压挖掘机工作装置实验样本长度的研究,详细讨论了样本长度的确定方法,重点分析了趋势曲线拟合法,提出了样本长度精度区间分析的方法,并在处理大量实验数据的基础上,从载荷分布及寿命估算的角度做了实际的验证.编制了应用程序,使样本长度确定至寿命估算整个过程程序化.     

从文化变迁谈民族服饰的演变

随着国际交流的日益加深，人们讨论的重点多是跨文化的接触以及频繁接触中的文化认同问题。西方许多领域的学者已把“西方中的东方”（the East in the west）纳入他们的研究领域中。因此，我们随处可以读到西方人有关中国文化的评论。服饰文化研究者也应学会认识异域文化（the West in the East），本文通过对民族服饰变异实例的研究，探索促成民族服饰变异的文化因素和历史根源，从而揭示文化变迁与服饰变异的关系。     

Continuous formation of slurry ice by cooling water–oil emulsion in a tube

Water-silicone oil emulsion with an additive, (C₂H₅O)₃SiC₃H₆NH₂, was examined as a heat storage material. A spiral tube used as a heat exchanger was immersed in a low temperature bath and the emulsion was circulated in the tube to make ice continuously. Ice was separated from the ice–liquid suspension in an outlet tank. The amount of formed ice, the temperatures of the inlet and the outlet of the heat exchanger, and the temperatures in the tube wall were measured and the overall heat transfer coefficient and the heat flux through the tube were calculated. Experiments were carried out, varying the flow rate, the temperature of cooling brine, and the thickness of tube wall. The condition under which slurry ice was formed continuously without adhesion of ice to the cooling wall was clarified. Though decrease in the thermal resistance of the tube increased the rate of ice formation or raised the brine temperature, it narrowed the range of the flow rate and of the brine temperature in which slurry ice was formed continuously.     

TFT-AMLCD绝缘层a-SiNx∶H的制备

用等离子体化学气相沉积法(PECVD)在玻璃基板上淀积了厚度约1μm的非晶氮化硅(a-SiNx∶H)薄膜,在最佳工艺下得到薄膜的性能参数,折射率为1.8左右,光吸收系数为1.2×102～2×102cm-1,相对介电常数为7～8.4,电荷面密度为2.5×1012～3.1×1012cm-2.这种薄膜比较适合于用作薄膜晶体管-有源矩阵液晶显示器(TFT-AMLCD)的栅绝缘层.     

DNA/lipid complex organogel with shape‐memory behavior

DNA and amphiphilic N,N,N‐trimethyl‐N‐hexadecylammonium bromide (THAB) were stoichiometrically mixed together to produce a DNA–lipid complex, which was dissolved in dimethyl sulfoxide (DMSO) at 65°C and then crosslinked with isophorone diisocyanate (IPDI). The obtained organogel swelled reversibly in DMSO, responding to the variation of temperature. Interestingly, we observed that the gel exhibited a temperature‐dependent shape‐memory behavior. Above 65°C, whatever the shape the gel was deformed to, it could retain the new shape as the temperature was decreased to room temperature, while, when the gel was heated to 65°C again, it could recover its initial shape. The shape‐memory characteristic is supposedly originated from the transition between the close‐packed and the destroyed DNA/lipid conformation. The elastic urethane crosslinking bonds between base‐pair sites act as a fixing phase. The gel holds promise in its application as a gentle actuator. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 259–263, 2002     

掺杂对低压ZnO压敏陶瓷材料显微结构及性能的影响

本文探讨了多种金属氧化物对ＺｎＯ－Ｂｉ＿２Ｏ＿３－ＴｉＯ＿２系材料的改性作用和对其微结构的影响，为得到预定性能的材料提供了掺杂方面的实验依据。