无限大平面磁通量的规律性及其应用

对于球解高对称性静磁场，如果仅应用安培环路定理和高斯定理，在解答中会存在一些不能唯一确定的常量，为了研究确定这些常量的规律，本讨论了穿过一个无限大平面的磁通量并用得到了一个有意义的结论。     

On the Enskog-Thorne theory for a binary mixture of dissimilar rigid spheres

Thorne's method for obtaining transport coefficients in a binary rigid-sphere mixture is reexamined. First, a close look is taken at the way in which the point where the Enskog functionsx _ij are evaluated is introduced. Second, the calculation of the fluxes in the system and the transport coefficients is given. Thorne's results are found to be correct and independent of the choice of the point where the transfer plane is located. This does not hold true for the diffusion flux. It is shown that a different diffusion force is obtained for each selection and that only those diffusional effects which are of first order in the density are consistent with irreversible thermodynamics.     

制备工艺对电子俘获材料性能的影响

利用等离子体质谱(ICP-MS)技术测试了硫化助熔剂法和稀土直接掺杂工艺合成电子俘获材料的化学计量比,结果表明,采用稀土直接掺杂工艺合成材料的化学计量比更接近设计值;通过分析电子俘获材料的发光机制和光谱测试结果,讨论了制备工艺条件对电子俘获材料中稀土离子化合价的影响.     

氧化物超导体的磁通动力学

考虑到氧化物高温超导体与传统超导体磁性质之间的不同之处，文章从不可逆线的解释，Ａｎｄｅｒｓｏｎ模型的一种修正方案以及对Ｓ－Ｔ关系曲线的解释等三个方面对高温超导体的磁通动力学行为作了简要的介绍。     

非圆截面托卡马克等离子体边缘磁场的解析解及重构方法

本文用傅里叶及边缘泰勒展开的方法，导出了非圆截面托卡马克等离子体边缘磁面的解析解及其重构的方法。最后作为例子，给出了在ＴＥＸＴ－Ｕ装置中按实际参数重构的等离子体边缘磁面结构及重构的误差。     

Protein type effects on steady-state crossflow membrane ultrafiltration fluxes and protein transmission

The permeate fluxes and percent protein transmission were evaluated for steady-state crossflow ultrafiltration of two proteins of different composition: bovine serum albumin (BSA), containing fatty acid, and “fatty-acid-poor” BSA, from which most of the fatty acids had been removed (BSA/FAP). The influences of protein concentration up to 6.5 percent w/v, transmembrane pressure, ionic environment and membrane type (i.e. nominal molecular weight cut-off) were investigated. For both BSA and BSA/FAP, the fluxes and the protein transmission were dependent on the amount of salt present. The higher fatty acid content in the BSA apparently enhanced protein-protein interaction, resulting in a more cohesive and resistant fouling layer; permeate fluxes were lower with BSA/FAP than with BSA at otherwise corresponding operating conditions. A hysteresis behaviour of the flux (J)-transmembrane pressure (TMP) relationship was observed whenever the ultrafiltration unit was operated at a TMP less than some higher value to which the membrane previously had been exposed.     

Analysis of the surface-probe equation

An integrating surface-probe is a tool for the determination of local fluxes from surface-integrated measurements. For an axisymmetric system, the data analysis involves the numerical solution of a severely ill-conditioned Volterra integral equation of the first kind. This study establishes the existence of a unique solution under certain conditions and considers solution techniques based on product integration and also evaluation of the inversion integral. The methods are tested for convergence against exact input data, and the performance of the best methods against simulated experimental data is studied.     

螺旋型爆磁压缩脉冲发生器电阻及磁通损失的数值计算

基于电流和磁扩散方程,讨论了螺旋型爆磁压缩脉冲发生器(MFCG)中的电阻与磁通损耗问题,将相关的接触电阻模型、欧姆电阻的趋肤效应与邻近效应模型具体应用到2维爆轰磁流体力学程序MF-CG-Ⅳ中,进一步完善了程序的物理功能。并选用美国德克萨斯理工大学简单绕制的螺旋型爆磁压缩脉冲发生器的实验结果对新增模块进行了考证,计算结果符合物理规律,且与实验测量吻合较好。     

软X光能谱仪求辐射能流的改进方法

使用多道软X光能谱仪测量黑腔辐射能流时间过程并使用最小二乘法将多道谱仪的响应函数线性组合为等效平响应。针对惯性约束聚变实验中软X光能谱强度分布不均匀、等效平响应局部不平带来的误差,提出了辐射能流求解的加权改进算法。对不同谱形和等效积分温度的能谱进行了计算,比较了不同方法得到的能流还原能力。改进后的方法应用于实验数据的处理,得到了修正后的等效积分温度随时间的演化过程。     

矩形微槽道纳米流体饱和沸腾临界热流密度特性

针对纳米流体在微小尺度传热领域的应用,在常压下对微槽道中纳米流体的流动沸腾临界热流密度进行实验研究。分别以体积浓度为0.2%、0.5%的水基Al2O3纳米流体为工质进行试验,研究不同质量流速、槽道尺寸以及体积浓度等因素对沸腾CHF的影响。对比水为工质实验结果,表明:槽道尺寸、质量流速对于水-Al2O3纳米流体和纯水的CHF影响一致。其它参数一定的工况下,纳米流体CHF比纯水大,且随着纳米流体体积浓度增大,出口壁面过热度会增大。最后介绍一个微槽道沸腾CHF的预测模型,在评价其不足的基础上提出一个关于CHF的预测公式,与实验数据进行对比,验证该公式的适用性。