脑梗塞急性期胰岛素与血糖水平的研究

选择158例脑梗塞患者为观察组，另选择100例非脑梗塞患者为对照组。24h内抽取两组患者的静脉血测定空腹胰岛素值、空腹血糖值，并计算出胰岛素敏感性指数。对两组的胰岛素值、血糖及胰岛素敏感指数进行统计学比较。结果表明，观察组胰岛素水平、血糖水平明显高于对照组（P＜0．01），胰岛素敏感性指数明显低于对照组（P＜0．01），脑梗塞急性期胰岛素及血糖水平增高，胰岛素敏感性指数降低。     

为TP801单板机增加测频功能

电信号的频率是主要参数之一，对它的测量很重要，方法也很多。目前绝大多数采用数字式硬件电路来完成。但由于２８０—ＣＰＵ微处理器运算速度快，控制能力强，据测频原理，可采用软件秒脉冲和软硬件计数器来实现对频率的测量，为ＴＰ８０１单板机增加了测量功能，可一机多用。     

ICP－AES法测定富锗酵母中微量元素

本文采用美国ＬｅｅｍａｎＬａｂｓ公司中阶梯光栅光谱仪测定了人工培养的富锗酵母中高含量锗及镁、铜、锌、铁、钾、钠等微量元素，研究了富锗样品的前处理方法，样品加标回收率在９０％－１０３％之间，测量相对标准偏差：锗１０％，镁、铜、锌、铁、钾、钠等元素小于７％。     

Applying Petri-Net-Based Reduction Approach for Verifying the Correctness of Workflow Models

0 IntroductionTobadaseyd’s o nintfhoer mflaotiwonof s ywsotrekmss t hhraovueg hbe tehne doervgealnoipzead-tion rather than based ontasks .Duetothistrend,work-flowand business process technology has been applied tovarious applications such as ERP, groupwares , E-mar-ketplaces , E-business etc . When business processes areapplied to these applications ,business processes are de-fined by process designers and business process instancesare executed by workflowengines or workflow manage-ment sys…     

A hybrid-Trefftz element containing an elliptic hole

Much work on special elements that simplify geometrical modelling of structures containing holes, cracks and/ or inclusions has been reported extensively in the literature. This paper presents a hybrid-Trefftz element containing elliptic hole formulated using Hellinger–Reissner principle by employing trial functions based on the mapping technique and the Cauchy integral method. The element presented in this paper could be regarded as an improved formulation over Piltner [Special finite elements with holes and internal cracks, Int. J. Numer. Methods Eng. 21 (1985) 1471–1485] element because the chosen trail functions in this paper have provided relatively more stable solutions. The use of the element with other ordinary displacement-based finite elements has also yielded very accurate solutions even when very coarse meshes relative to the size of the elliptic hole have been used.     

基于层面信息的路径优化

根据分层物体快速成型（LOM）中零件逐层累积的特点，从缩短加工时间、提高制件效率方面着手阐述了路径优化的必要性，针对LOM机的运动机理和软件数据结构，给出了扫描路径优化的原理，将图论中的便宜算法用于LOM机的扫描路径优化。     

WAXS studies on block copolymers of ethylene and propylene

Wide-angle X-ray scattering from presumed block copolymers of polypropylene (PP) and ethylene-propylene copolymer (EPR), i.e., PP-EPR and PP-EPR-PP, synthesized by sequential polymerization with δ-TiCl₃? Et₂AlCl, was examined and compared with WAXS of mechanical blends and chain-transfer mixtures of PP and EPR with comparable compositions. The peak at 2θ = 20° for both the copolymers and the mixtures was attributed to the γ modification of PP in EPR. A strong variation in the ratio of diffraction intensities I₀₄₀/I₁₁₀ of PP in block copolymers and mixtures was explained in terms of crystallite growth in different directions. Analysis of the patterns and calculation of crystallinity, crystallite size, and lattice parameters led to the conclusion that block structure existed in the prepared copolymers.     

Synthesis for robust synchronization of chaotic systems under output feedback control with multiple random delays

Synchronization under output feedback control with multiple random time delays is studied, using the paradigm in nonlinear physics—Chua’s circuit. Compared with other synchronization control methods, output feedback control with multiple random delay is superior for a realistic synchronization application to secure communications. Sufficient condition for global stability of delay-dependent synchronization is established based on the LMI technique. Numerical simulations fully support the analytical approach, in spite of the random delays.     

Study of interactions of various ionic species with solvents toward the design of receptors

In earlier studies, the interactions of isolated ionic species with various solvents were investigated using ab initio calculations. The ionic species investigated included cations (proton, hydronium, ammonium, and metal cations) and anions (single electron, hydroxide, and halide anions). However in the present study, we investigate the interactions of these ionic species with the solvent in the presence of other competing ionic species. We also elaborate on how the information obtained from these extensive studies have been employed in designing and synthesizing various kinds of novel ionophores and receptors.