氦-氖激光穴位照射对脊髓后角SP及ENK的影响——免疫组织化学研究

激光照射“穴位”(简称光针)具有镇痛作用,已在临床实践和实验研究中获得广泛证明。光针可以抑制脊髓后角痛敏神经元放电,光针镇痛与其能促进体内吗啡样物质释放有关。 脊髓后角是痛觉调制的初级中枢,有关痛觉传递假说都涉及到脊髓后角内的P物质(SP)和脑啡肽(ENK)。SP与伤害性初级传递有关;ENK是体内吗啡样物质,与痛觉的调制有关。SP与ENK在脊髓后角的形态分布基本相似,提示两者之间在痛觉的传递上存在密切的功能联系。我们观察了光针后大鼠的痛阈变化,并采用免疫组化方法观察了光针后脊髓后角SP和ENK的变化规律,为光针镇痛机理提供了某些依据。     

电子恒温热水器技术研究与试验

本文基于目前国内电热水器市场背景和需求,通过电子恒温热水器技术研究与试验过程,较详细地介绍了电子恒温热水器设计目标、总体结构、装配工艺、工作原理、主要功能、控制面板操作指引,以及性能检验方法和检验结果,为推进项目实施做好了先期技术准备工作。     

查干凹陷乌力吉构造带浅层成藏主控因素

近年来在查干凹陷乌力吉构造带获得了勘探突破,发现了火山岩之上的浅层普通稠油油藏,油源分析表明,该油藏原油主要来自于深层巴音戈壁组的暗色泥岩。对浅层油藏成藏因素的综合分析认为,毛西断层晚期构造反转,形成了良好的油气输导条件,早期形成于构造带深层原生油藏中的原油向上运移至浅层,是浅层成藏的主控因素。同时,构造浅层沉积相类型主要为扇三角洲相和辫状河流相,储层较为发育,为油气富集提供了良好的储集条件;上覆的乌兰苏海组发育大套泥岩,形成了区域性盖层,为浅层油藏的形成提供了良好的封堵条件,从而形成了下生上储的油气成藏模式。     

线性回归中的影响度量

考察了一次剔除一组或多组数据对某些点处拟合值的影响问题，得到了影响度量的广义类．它包含了Ｃｏｏｋ距离、ＷｅｌｓｃｈＫｕｈ统计量、ＡＰ统计量等     

Research of Adaptive Transformation Method Based on Webpage Semantic Features for Small‐Screen Terminals

Small‐screen mobile terminals have difficulty accessing existing Web resources designed for large‐screen devices. This paper presents an adaptive transformation method based on webpage semantic features to solve this problem. According to the text density and link density features of the webpages, the webpages are divided into two types: index and content. Our method uses an index‐based webpage transformation algorithm and a content‐based webpage transformation algorithm. Experiment results demonstrate that our adaptive transformation method is not dependent on specific software and webpage templates, and it is capable of enhancing Web content adaptation on small‐screen terminals.     

Quad/triangle subdivision,nonhomogeneous refinement equation and polynomial reproduction

The quad/triangular subdivision, whose control net and refined meshes consist of both quads and triangles, provides better visual quality of subdivision surfaces. While some theoretical results such as polynomial reproduction and smoothness analysis of quad/triangle schemes have been obtained in the literature, some issues such as the basis functions at quad/triangle vertices and design of interpolatory quad/triangle schemes need further study. In our study of quad/triangle schemes, we observe that a quad/triangle subdivision scheme can be derived from a nonhomogeneous refinement equation. Hence, the basis functions at quad/triangle vertices are shifts of the refinable function associated with a nonhomogeneous refinement equation. In this paper a quad/triangle subdivision surface is expressed analytically as the linear combination of these basis functions and the polynomial reproduction of matrix-valued quad/triangle schemes is studied. The result on polynomial reproduction achieved here is critical for the smoothness analysis and construction of matrix-valued quad/triangle schemes. Several new schemes are also constructed.     

内容适配系统设计及性能评价研究

内容适配技术是实现通用多媒体访问的主流技术,如何实现内容适配系统是内容适配技术研究中的重要问题。基于SOA架构设计并实现内容适配系统。系统具有数据管理、服务管理、内容适配和内容服务功能。采用客观和主观指标结合的评价体系,对内容适配系统的服务质量进行评价。     

Matrix-valued 4-point spline and 3-point non-spline interpolatory curve subdivision schemes

The objective of this paper is to study and construct matrix-valued templates for interpolatory curve subdivision. Since our investigation of this problem was motivated by the need of such subdivision stencils as boundary templates for interpolatory surface subdivision, we provide both spline and non-spline templates that are necessarily symmetric, due to the lack of direction-orientation in carrying out surface subdivision in general. For example, the minimum-supported Hermite interpolatory C¹ cubic spline curve subdivision scheme, with the skew-symmetric basis function for interpolating first derivatives, does not meet the symmetry specification. Non-spline C² interpolatory templates constructed in this paper are particularly important, due to their smaller support needed to minimize undesirable surface oscillations, when adopted as boundary templates for interpolatory C² surface subdivision. The curve subdivision templates introduced in this paper are adopted as boundary stencils for interpolatory surface subdivision with matrix-valued templates.     

牙颌模型牙弓长度的数字测量

介绍了获取牙颌模型(牙合)面数字图像的原理和采用与标准线段进行对比测量牙弓长度的方法,并结合C 语言讨讨论了该方法的实现.     

世界在变迁——我国石化工业面临的挑战与对策

阐述了世界石油天然气资源状况及石油产品、石化产品供需状况与发展趋势,分析了我国石化工业发展概况与趋势,以及我国石化工业发展面临的制约因素与挑战,提出了促进我国石化工业持续有效发展的对策与措施。