波分复用自愈系统在山西电网中的应用

利用现有光缆资源规划山西电力主干光纤波分复用自愈网状网,从而实现在多重线路故障时对重要业务的强大的保障能力,同时为未来大颗粒、高速率业务的传输提供传输平台,提高山西电力通信网络的安全可靠性。     

医用防护服用非织造布的热湿舒适性能研究

测试了医用防护服用非织造布的结构特征参数，热湿舒适性方面的透湿透气性，以及KES测试的低负荷下各项力学性能等各项性能。分析了非织造布相较于传统医用服装机织面料在热湿舒适性、触觉舒适性度成型性等方面的特点。通过所设计的实验装置用DL-700C红外热像仪监测了模拟表下微气候的热湿传递特性，以及不同状态时面料表面温度的变化规律。提出了织物表面温度变化率作为表征非织造布的热湿舒适性能的评价指标。     

在现实与理想之间--徐志摩文艺思想探隅

徐志摩主张生活就是艺术,生活与艺术的中介是自然。他认为物与人一样,都具有物尽其性的特点,因此,在人性与自然物性的观照、置换中,产生了艺术。尽管这种观点道出了诗性思维的某些真谛,但也明显抽去了人性的现实内容。     

基于BP神经网络的图像识别研究

提出一种采用BP神经网络实现钢材编号文字识别的方法？先采用彩色图像HSI空间中S分量的特性，定位钢材区域，然后利用一系列图像处理技术，对图像中钢材编号区域定位、分割字符，最后采用BP神经网络进行字符识别。实践证明，采用BP神经网络，可有效地识别铜材编号，速度快、识别率高，具有较高的实用价值。     

磁驱动MEMS光开关的设计、分析和仿真

对比静电驱动与磁驱动,发现只有当驱动器的间距小于1.75μm时,静电能密度才处于优势地位,而大于此间距后,磁驱动将表现出主导地位.在此基础上,为了设计出具有较大运动范围的光开关,提出了一种新的基于MEMS技术的磁驱动形式,采用溅射、激光镀覆等方法在衬底上制备磁性薄膜,并通过外加磁场实现开关动作.对采用永磁材料和软磁材料这两种情况下光开关的静态行为进行了分析和模拟.结果显示,尽管使用不同类型的磁性材料会对开关的响应产生影响,但其最大转角都可达到80°,远远超过静电驱动光开关所能实现的程度,同时它还避免了静电驱动中常见的结构“塌陷”现象.     

A Study of Fine Denier Propylene Knitted Fabrics'''' Wet Comfort-The wet Comfort Studied by the Manikin Test

Based on the theory of moisture vapor permeability and liquid moisture transmission through fabrics, this paper is mainly concerned with the wet comfort of the flne de-nier propylene knitted clothing. The heat resistance clo index and the moisture permeability Im index of these clothing are measured with the manildn and discussed. On the while, the manikin deveioped by Fashion Institute of C.T. U. is introduced. At last, according to their Im value these fabrics are classified into different types.     

热处理对硝酸熔盐中347H不锈钢腐蚀行为的影响

利用静态熔盐浸泡实验,研究了不同晶粒度的347H不锈钢在565 ℃混合硝酸熔盐(60%NaNO₃+40%KNO₃)中长达120 h的腐蚀行为.通过增重法绘制腐蚀动力学曲线,并研究347H不锈钢的表面腐蚀产物、物相、腐蚀表面微区成分,解释347H不锈钢在硝酸熔盐中的腐蚀机理.结果表明:经过固溶处理调控晶粒度的347H不锈钢在熔盐腐蚀中腐蚀速率有所降低,腐蚀动力学曲线变为线性增长趋势.通过XRD检测得到,347H不锈钢在硝酸熔盐中的腐蚀产物主要是Fe₂O₃和少量的Fe₃O₄及NaFeO₂.Fe₃O₄,结构致密,能有效减小硝酸熔盐对钢基体的腐蚀,导致347H不锈钢在腐蚀后期质量损失有所降低.腐蚀产物形貌和横截面厚度分析结果表明,经过1 160 ℃固溶处理1 h后不锈钢晶粒度达到7级时,腐蚀层厚度达到最低为0.661 μm,此时347H不锈钢在硝酸熔盐中的耐腐蚀性达到最好.     

Skin Sensitive Difference of Human Body Sections under Clothing — Comparative Judging of Body Sections'''' Cold Sensitivity Sequence

Intheserialreports[1,2]ofskincoldsensitivedifference ofhumanbodysectionsunderclothing,thepatternofskin temperature smaximumchangesanddynamicchanging processonhumanbodysectionsstimulatedbythesame intensivecoldunderclothingisreported.Atthesame time,bodysectionsaffectedbythesamecoldstimulus resultsinwearers psychologicalperceptiondifference,whichcouldberesearchedintheaspectofsenseand consciousness.Traditionally,senseandconsciousnessbelongto psychologycategory.Tostudysenseandconsciousnessrelated t…     

Methane Conversion to C2 Hydrocarbons in Solid State Oxide Electrolyte Membrane Reactor

Provskite-type catalysts, Ln0.6Sr0.4FexCo1-x O3 （Ln = Nd, Pr, Gd, Sm, La, 0〈x〈1） and Ln0.8Na0.2CoO3（Ln=La, Gd, Sm） were synthesized, their catalytic properties in the oxidative coupling of methane （OCM） were examined in a fixed-bed reactor. The former group presented higher activity in the OCM, but the main product was carbon dioxide. While the later group showed lower activity but much higher selectivity to C2 hydrocarbons compared with the former. Electrochemical measurements were conducted in a solid oxide membrane reactor with La0.8Na0.2 CoO3 as catalyst. The results showed that methane was oxidized to carbon dioxide and ethane by two parallel reactions. Ethane was oxidized to ethene and carbon dioxide. A fraction of ethene was oxidized deeply to carbon dioxide. The total selectivity to C2 hydrocarbons exceeded 70%. Based on the experimental results, a kinetic model was suggested to describe the reaction results.