The relationship between serum lipids, apolipoproteins level and bile lipids level, chemical type of stone

To pick up serum high risk lithogenic factors predisposing one to gallstone formation and protective factors against gallstone formation in gallbladder. We compared serum lipid and apolipoprotein level of patients with gallbladder stone (stone group) with that of patients without gallbladder stone (control group). The correlation between serum lipid, apolipoprotein level and bile lipid level, cholesterol saturated index (CSI), characteristics of lipidemia in different kinds of gallbladder stones were studied. The results showed that the increase of serum Apo A1, C2 and E level in the stone group was more significant than in the control group. But there was no statistical significance in TC, TG, LDL-C, HDL-C, Apo A2, B, C3 level between the stone and control groups. These results suggested that serum apolipoproteins perhaps are more sensitive parameters than serum lipids in distinguishing patients with stones from those without stones. There were different profiles of serum lipid and apolipoproteins in different chemical types of gallbladder stones. Increased level in serum LDL-C, Apo B and ratio of LDL-C/HDL-C were characterized by an index for cholesterol stone, otherwise that in serum TG and Apo C2 an index for pigment stones. There was a positive correlation between serum total cholesterol (TC) or Apo B, C2, C3 and cholesterol amount or CSI in gallbladder bile. Therefore, TC, Apo B, C2, C3 could be considered as high risk lithogenic factors. A positive correlation existed between serum HDL-C and lecithin in gallbladder or common bile duct (CBD) bile as well as between HDL-C and bile acids in CBD bile. Thus, HDL-C might be a protective factor against gallstone formation in gallbladder.     

集群移动通信系统的组网设计

本文对集群移动通信系统在组网设计时应考虑的问题进行了分析，并提出了具体步骤和方法，可供集群系统组网设计时参考。     

A comprehensive approach to the solution of direct-coupledmultislice model of skewed rotor induction motors using time-steppingeddy-current finite element method

Normally a complicated three-dimensional (3-D) approach is needed to study the field pattern of induction machines with skewed rotor bars. In this paper, a time-stepping two-dimensional (2-D) eddy-current finite element method, based on multislice technique, is described to study the steady-state operation and the starting process of skewed rotor induction machines. The fields of the multislices are being solved en bloc simultaneously, and thus, the effects of the eddy current and saturation can be taken into account directly. New forms of the governing equations for the multislice model are derived, which allow the meshes of multislices to be taken as one 2-D mesh so that the algorithm is very similar to that of general 2-D problems. Special techniques required for the mesh generation in the multislice model and the salient structures of the software are also described. The results obtained by using the program being developed have very good correlation with test data     

添加高效粘结剂的氧化锰矿粉冷固成团

以氧化锰矿粉为原料，添加ＺＢ粘结剂进行冷固成团，所得冷固团块不仅具有足够的机械强度，而且具有良好的耐湿性，适用于长距离运输和露天堆存，是一种可与块矿性能相媲美的优质炉料，为充分利用矿山及冶炼厂的锰矿粉找到了一条良好的途径．     

小开河引黄灌区干渠衬砌工程存在的问题及对策

针对小开河引黄灌区干渠衬砌工程在管理运行中存在的渠坡衬砌板沿伸缩缝隆起、混凝土板表层脱落、底部混凝土板下滑、地下渠段混凝土板大面积坍塌破坏等问题。提出了衬砌板破坏的预防及对策,对以后的灌区节水改造工程建设有一定的参考和借鉴作用。     

调整浆骨比优化混凝土配合比试验研究

本文研究了在不同浆骨比条件下混凝土的基本性能,重点论述了不同浆骨比对混凝土强度、收缩变形、氯离子渗透性的影响,并阐述了影响混凝土性能的作用机理.证实通过调整浆骨比可以优化混凝土配合比,使混凝土获得良好施工和易性并改善其各项性能指标.     

山西省水资源开发利用对策措施

通过对山西省水资源状况及面临的水资源形势分析，提出了山西省水资源开发和利用的对策。山西省在未来10年内水资源开发利用应继续遵循“西引黄河，东抓蓄调，腹部盆地节调并举”的战略思想，只有加强以农田水利为重点的农村基础设施建设，继续抓好大中型水利工程的立项建设，鼓励支持社会各方力量兴办中小型水利工程，加强农业节水工程建设，推广农业高效用水技术，才能使山西省大部分地区的水资源短缺状况将得到极大改善，为全省国民经济和社会可持续发展提供支撑和保障。     

创业家与企业家的相关内涵思辨

学术界和实践界对entrepreneur和entrepreneurship的内涵界定不清晰，缺少概念基础，从而限制了《创业学》的发展。分析了创业与创新的本质；区别了活跃在企业创立和成长阶段、致力于创造生产函数的创业家和扮演“权威”、致力于改变函数自变量的企业家；界定了在不同语境中创业家与企业家的含义。最后，强调了需要根据上下文来判断它们的内涵。     

浅析绞车盘式刹车与自动送钻系统

阐述了2种典型盘式刹车和2种典型的绞车结构形式;分析了国产绞车、盘式刹车的现状和存在的问题;提出了绞车和自动送钻改进意见和科研攻关重点,对今后钻机更新时绞车和盘式刹车结构改进、提高国产钻机的性能和质量,具有一定的启发和指导作用。     

三峡工程明渠提前截流方案及水力学试验研究

论述了三期明渠提前截流方案的综合比较分析及截流水力学试验研究成果。认为拟定的提前截流诸方案各有利弊 ,其截流难度较初设方案显著增加。对于截流“基本方案”及“比较方案”的成功实施 ,必须辅之以一定的工程技术措施降低截流难度