A STUDY OF TRANSMISSION OF MOISTURE THROUGH FABRICS

Based on the Dynamic Dress Model which can simulate the body core temperature and skintemperature,as well as body sweating,this paper holds a further inquiry into the new method formeasuring heat resistance of fabrics and moisture transmission in terms of“clo”unit andpermeability index“im”.It is found out that the values of Tex of warp and weft have the greatestinfluence on permeability index im and when the thread count increases to a certain limit,thepermeability index“im”is in direct proportion to thread count.     

介质阻挡放电等离子体热效应对流场影响的研究

在速度场和温度场测量的基础上,采用数值模拟方法研究了介质阻挡放电等离子体热效应对速度场的影响。分别利用二维粒子图像测速仪和红外热像仪得到了介质阻挡放电等离子体在静止空气中产生的速度场和温度场。通过实验中获得的速度场来验证数值模型的可靠性,而温度场则作为求解能量方程的边界条件。数值模拟结果表明,在无来流的情况下等离子体热效应对流场的影响比较明显,使局部水平方向速度大小提高近30%,但有来流时,由于对流换热使高温区减小,热效应对流场的影响减弱。     

电缆地层测试技术应用进展

作为油气层快速评价的有效手段,电缆地层测试技术在我国油气田勘探开发中起着越来越重要的作用,为正确认识储层特征、流体性质和油气藏类型提供可靠依据,因此研究电缆地层测试仪器的功能及其应用具有重要意义。本文从电缆地层测试资料的应用方法入手,对其利用压力梯度划分油水界面、渗透率评价、mini-DST功能以及流体采样评价方法进行了系统总结,以推动电缆地层测试技术在国内的发展。     

公民网络参与的意义、障碍及发展路径

公民网络参与具有便捷性、广泛性、互动性、高效性等特点。它有利于拓宽参与渠道,满足公民日益强烈的参与需求,也有助于推动政府与公民的直接互动,改善公民参与的效果,但网络存在的安全隐患、网络参与的自由与无序以及网络可能加剧公民参与的不平衡影响了公民网络参与的发展。推动公民网络参与的主要途径为：促进农村互联网的发展,推进电子政务建设,提高政府与公民的网络素质,加强网络参与的法制建设和网络伦理建设。     

变质量势垒穿透的研究

针对半导体量子阱或超晶格中电子有效质量变化的实际情况,本文讨论了变质量粒子在势垒中的隧穿过程,分析了透射系数与粒子能量及质量的关系,并用图表绘出了计算结果.     

Altered K+ movement in liver mitochondria from alloxan diabetic rats

Summary Potassium movements were monitored in liver mitochondria from control and alloxan diabetic rats with a cationic electrode. There was net accumulation of K⁺ after Ca²⁺ addition to the mitochondria with the diabetic but not with the control.     

油田堵剂的智能作用

采用物理模拟和化学模拟方法研究了油田堵剂的智能作用。结果表明,油田堵剂能感知地层渗透率及厚度的大小,优先进入高渗透层,进入地层的量与地层厚度成正比。同时,油田堵剂还能感知地层水矿化度及流动介质（如油、水等）的变化,其体积及封堵性能随之发生相应的变化,由此可见,油田堵剂都是具有选择性的智能型堵剂。在一定条件下,堵剂的堵水能力高于其堵油能力。     

环氧树脂封装对铁基纳米晶磁芯磁导率和伏安特性的影响

用宽为20 mm、厚为25μm的Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9非晶带材绕制成环形磁芯,将其经550℃×100 min晶化退火处理后制成纳米晶磁芯,研究了环氧树脂封装对纳米晶磁芯磁导率和伏安特性的影响。结果表明,与环氧树脂封装前相比,环氧树脂封装后,纳米晶磁芯的磁导率μ、电感Ls、有效磁导率μe和品质因数Q减小;当励磁电流I小于800 m A时,感应电动势E减小,当励磁电流I大于800 m A时,感应电动势E增大。     

Microstructure studies of air-plasma-spray-deposited CoNiCrAlY coatings before and after thermal cyclic loading for high-temperature application

In the present study, bond-coats for thermal barrier coatings were deposited via air plasma spraying (APS) techniques onto Inconel 800 and Hastelloy C-276 alloy substrates. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and atomic force microscopy (AFM) were used to investigate the phases and microstructure of the as-sprayed, APS-deposited CoNiCrAlY bond-coatings. The aim of this work was to study the suitability of the bond-coat materials for high temperature applications. Confirmation of nanoscale grains of the γ/γ′-phase was obtained by TEM, high-resolution TEM, and AFM. We concluded that these changes result from the plastic deformation of the bond-coat during the deposition, resulting in CoNiCrAlY bond-coatings with excellent thermal cyclic resistance suitable for use in high-temperature applications. Cyclic oxidative stability was observed to also depend on the underlying metallic alloy substrate.     

一个新颖的混合配体双核镝(Ⅲ)配合物:合成、结构和磁性能研究

通过溶剂热方法合成了一个以4′-(对苯酚)-2, 2′:6′, 2"-三联吡啶(L1)和N, N'-双(亚水杨基)亚乙二胺(L_2)为混合配体的稀土金属配合物[Dy_2(L_1)_2(L_2)Cl_2(SCN)_4],并通过单晶和粉末X-射线衍射、元素分析、红外光谱、热重分析、直流和交流磁化率对其结构和磁学性能进行了全面地表征。该配合物结晶于三斜P1空间群,晶胞参数为a=0.90268(4) nm,b=0.90572(3) nm,c=1.91170(7) nm,α=83.092(3)o,β=82.848(3)o,g=74.189(4)o,V=1.4860(11) nm~3,Z=1。在该配合物中,中性的N, N'-双(亚水杨基)亚乙二胺配体连接相邻的Dy~Ⅲ离子形成中心对称的松散双核结构,而具有大p共轭骨架的三联吡啶分子则作为封端配体参与Dy~Ⅲ离子配位多面体的构建。更为有趣的是,源于五角双锥构型的Dy~Ⅲ离子的强各向异性,该配合物呈现出场诱导的单分子磁体行为,其磁矩翻转的有效能垒和指前因子分别为42.7 K和1.3×10~(-6) s。