非均匀介质下的可调光流控器件及其生化应用

 探讨了非均匀介质下不同光流控器件及其生化应用。在微流控芯片上，主要从2个方面开发和实现各类具有光波导、透镜、细胞计数、化学检测等功能的新器件。首先，在液液非均匀介质下，通过调节沟道内液体流速，控制液体间的对流扩散来实现液体在微腔内的渐变折射率分布和阶跃分布，从而得到其特殊的光学特性，例如光束分离、弯曲、自聚焦等。其次，在固体非均匀介质下，利用特殊的微流结构与液体相结合，实现更加灵敏可调的新型探测手段。这些新型技术手段分别在生物传感、能源生产、细胞探测及海水检测等诸多应用中可发挥关键性作用。     

六角螺系统的 Harmonic 指标

图G的 Harmonic指标定义为图G 中所有边uv 的权重2du＋dv 的和，用 H（G）表示；二阶Harmonic指标被定义为图G中所有二长路uvw的权重3du＋dv＋dw 的和，用2H（G）表示；其中du表示G中点u的度数。该文研究了六角螺链和六角螺系统的 Harmonic 指标，发现它们的极图不唯一。通过研究二阶 Harmonic指标，确定了六角螺链的极图，发现六角螺系统的极图是一类特定的图。并且找到一个关于Harmonic 指标的极图和二阶 Harmonic 指标的极图的关系。最后，提出一个关于 Harmonic 指标的开放新问题。     

Reconsideration on Homogeneous Quadratic Riemann Boundary Value Problem

The homogeneous quadratic Riemann boundary value problem (1) with Hoelder continuous coefficients for the normal case was considered by the author in 1997. But the solutions obtained there are incomplete. Here its general method of solution is obtained.     

脂肪醇物理化学性质的拓扑指数法研究

借助基团体积的贡献值和分子中各原子的支化度，写出分子的距离矩阵Di，由Di构建新拓扑指数五zi=ln(λmax λmid)；同时，引进分子的结构描述符Qc、有机性无机性比值OI，用多元线性回归关联脂肪醇的-lgS。-lgKow，RI，复相关系数均在0．99以上。     

Mechanical Design and Research on Process of Air Suction Drawing System of Spunbonded Nonwoven

The design guideline for the air suction drawing system with auxiliary air was analyzed, a spunbonding nonwoven system named PADHL1 - 3200 was designed and polypropylene （PP） spunbonded nonwoven fabrics with excellent properties were achieved after many trial runs. On the other hand, the suction air velocity （VA） was calculated and the influence of VA on the bonding strengh of PP nonwoven fabrics was Studied as well. It was found that VA is 1.5 - 2.5 times of the spinning velocity. With the increase of VA, PP fibers become finer and the bonding strength of PP nonwoven fabrics increases as well.     

浅析营业杠杆系数及其经济应用

本文介绍了营业杠杆系数这一衡量企业经营风险的重要指标，对该指标的特性进行了较深入的分析和探讨。同时，还导出了利用该指标判断企业经营安全状态的方法。     

接触载荷作用下的表面裂纹分析

用边界积分方法分析了表面裂纹在接触载荷作用下的张开位移和应力强度因子，该方法将埋在无穷大弹性介质中裂纹模拟为连续分布的位错环，根据两个位错环之间的相互作用能可以得到弹性体的应变能，对弹性体的势能取极值，可以得到关于裂纹张开位移的边界积分方程，通过把半空间的边界模拟成一个包含在无穷大弹性介质中大裂纹，该方法能用已有的边界积分方法很好的处理具有任意表面形状的表面裂纹，文中算例分析了不同倾角的表面裂纹在法向和切向接触载荷作用下，裂纹尖端的应力强度因子，其结果对于分析路面表面裂纹的扩展具有重要意义。     

学术论文评审指标体系设计

介绍了学术论文评审表设计的原则和评审表的形式。结合多年办刊的实践。设计了一种简单实用的评审表，所设计的内容既有限定问题的选择回答，又留有审稿人自由发挥的空间。     

图的直积和字典积的Laplacian谱和Kirchhoff指数

由图G1、G2的Laplacian谱得到了它们的直积G1×G2和字典积G1[G2]的Laplacian谱,并计算了R(G1×G2)和R(G1[G2]).     

Environmental Issues of Geothermal Development in Yangbajing, Tibet and the Countermeasures

The pollution source and pollution state of surface water is respectively assessed with equal-standard-pollution-load index and Nemero index, and the habitans' health is assessed as well by comparison with pre-development of geothermal field. Results show that: 1 ) Three pollutive factors obviously fail to attain the required standards and their order sorted by impact degree is As＞F- ＞S2-. 2) The Nemero index of Donggua cross section of Duilongqu River is 0. 725and the water quality is at mildly-polluted level. 3) In Lhasa River, the Nemero indexes of cross sections affected by geothermal fields are much higher than that of the unaffected one, which shows the present and potential impacts of geothermal development. 4) Much more inhabitants nearby got trichomadesis sickness after geothermal development, which shows that the surface water pollution in this area has threatened the inhabitants' health. In addition, other environmental issues caused by Yangbajing geothermal development are analyzed and some countermeasures are proposed.