超细矿物粉体增强材料的研究与开发

本文在实验测试和统计的基础上,从微粉粒径、粒型等结构特点出发,研究超细微粉经过表面活性处理,与基体材料复合后,表现出独特的物理、化学性质的机理,继而依据此机理开发出各种超细矿物粉体增强材料.     

极小旋转曲面的生成曲线

用分析的方法导出了极小旋转曲面的生成曲线的方程。     

关于解决乳化炸药发泡后效方法的分析

乳化炸药生产中采用的化学发泡敏化方式，往往会产生后效问题，给产品的质量带来很大的影响，提出了对克服发泡后效的方法，并对其进行了理论上的分析论证，通过生产中的实验，证明是切实可行的，并对生产工艺进行了调整，解决了发泡后效问题，提高了产品质量，取得了良好的效果。     

Symmetric alteration of four knots of B-spline and NURBS surfaces

INTRODUCTION Modification of knots of a B-spline curve changes the shape of the curve. In some recent pub-lications (Juhász and Hoffmann, 2001; 2003; Hoff-mann and Juhász, 2004; Li and Wang, 2005), the authors studied the effect of the alteration of a single knot on the shape of the curve. Hoffmann (2004) and Li & Wang (2006) applied these theories into the constrained shape modification of B-spline and NURBS curves. Juhász (2001) and Hoffmann & Ju-hász (2005) studied the effe…     

Subdivision surface modeling system based on arbitrary topological curves network and combined subdivision

Arbitrary topological curve network has no restriction in topology structure,so it has more powerful representing ability in defining complex surfaces.A complex surface modeling system is presented based on arbitrary topological curve network and the improved combined subdivision method,its functions including creating and editing curve network,and generating and modifying curve network's interpolated surface.This modeling system can be used to the process of products'concept design,and its applications is ...     

4-component 2-D CFDFD method in analysis of lossy circular waveguide with fractal rough surface

In this paper, equivalent surface impedance boundary condition (ESIBC), which takes fractal parameters (D, G) into SIBC, is implemented in the 4-component 2-D compact finite difference frequency domain (2-D CFDFD) method to an- alyze the propagation characteristics of lossy circular waveguide with fractal rough surface based on Weierstrass-Mandelbrot (W-M) function. Fractal parameters’ effects on attenuation constant are presented in the 3 mm lossy circular waveguide, and the attenuation constants of the fi...     

Effective extraction of elastase from Bacillus sp. fermentation broth using aqueous two-phase system

INTRODUCTION Aqueous two-phase system (ATPS) is widely used in biochemistry and biotechnology for purifica- tion of proteins (Diamond and Hsu, 1992; Balasubramaniam et al., 2003), enzymes (Pan et al., 2001; Bim and Franco, 2000), amino acids (Li et al., 2002), antibiotics (Yang et al., 1994; Guan et al., 1994), nucleic acids (Ohlsson et al., 1978; Kimura, 2000), aroma compounds (Marco et al., 2000) and lactic acid (Planas et al., 1998). ATPS is mainly composed of two-incompatible p…     

三个连续的发现与用几何方法研究数论的新构想

在对毛比斯面的证明方法的深入研究中，发现了一种证明方法——“递推法”；在对“递推法”的进一步探索中，发现了一类新几何体——“棱环体”；在研究“棱环体”的边数的变化规律中，得到了一张“数表”，对“数表”的进一步研究，又相继发现了“最大公约数定理”、“素数规律”等．“棱环体”的发现，引发了“扭曲几何学”的构想；“数表”的发现，为一种新的数论研究方法——“数论的几何研究法”的提出，奠定了基础。     

周口市地表水环境污染状况及改善措施

根据地表水的检测结果讨论了周口市地表水环境污染的状况，提出了改善措施，为周口市治理水环境污染工作提供了依据。     

局域弯曲液面的光学特性分析

研究了强度均匀分布的平行光束照射局域上（下）弯曲液面时，其反射光场及该反射光场经透镜后的透射光场的分布特点，发现上弯曲液面的反射光场为椭圆形暗场，下弯曲液面的反射光场为星形亮斑。而它们的透射光场恰好类似于对方的反射光场。对这些特点的形成进行了讨论，同时对上弯曲液面的反射光场进行了计算。