压铸模与铝合金金属间化合物的形成与分解

为了研究压铸模与铝合金金属间化合物的形成与分解过程,进行了热浸铝试验.试验结果表明金属间化合物的形成与分解是一个连续不断的循环过程,两者之间的相互关系导致了钢基的失重以及体积的减少.     

CdZnTe Crystal Growth by Vertical Gradient Freezing Method

ＣｄＺｎＴｅＣｒｙｓｔａｌＧｒｏｗｔｈｂｙＶｅｒｔｉｃａｌＧｒａｄｉｅｎｔＦｒｅｅｚｉｎｇＭｅｔｈｏｄＨｏｕＱｉｎｇｒｕｎ；ＷａｎｇＪｉｎｙｉ；ＤｅｎｇＪｉｎｃｈｅｎｇ；ＤｕＢｉｎｇ，（侯清润）（王金义）（邓金诚）（杜冰）；ＬｉＭｅｉｒｏｎｇａｎｄＣ...     

釉上金红颜料的研制

采用液相反应法研制了釉上金红颜料，给出了颜料和熔剂配方及其制备方法。     

微孔无机膜反应器研究

主要介绍了无机膜在化学反应中的应用－－膜反应器研究，对膜反应器的特点、类型、应用、影响因素以及与其它反应器的比较进行了评述，并对其应用前景进行了展望。     

新型AGR管材的性能及应用前景

新型供水管材-AGR管(亚克力共聚PVC管)，采用超微粒子丙烯酸树脂弹性体与PVC接枝共聚而成，在保持原有PVC刚性性能基础上，提高了低温冲击性能及卫生性能，可用于供水管、抗震管及其他饮料和化工流体的输送。     

制备聚羟基氯化铝的一种新方法──以高岭土为原料，碳酸钙作盐基度调整剂制备条件的研究

本文研究了用碳酸钙作盐基度调整剂，从高岭土制聚羟基氯化铝的新方法．考查了酸浸液浓度及盐基度、反应温度和时间等因素对调整过程的影响。并制得了聚羟基氯化铝．     

聚丙烯中空纤维膜萃取过程传质特性研究

在自制的中空纤维膜器中研究了膜萃取过程的传质特性.研究表明,自制的带折流板的膜器可以提供较高的传质效率.增大水相流速可以提高传质速率,而改变有机相流速对传质没有影响.通过对实验数据的回归分析得出了折流膜器的壳间传质关联式.该研究对折流膜萃取器的开发和设计具有参考价值.     

Potential thread-level-parallelism exploration with superblock reordering

The growing number of processing cores in a single CPU is demanding more parallelism from sequential programs. But in the past decades few work has succeeded in automatically exploiting enough parallelism, which casts a shadow over the many-core architecture and the automatic parallelization research. However, actually few work was tried to understand the nature, or amount, of the potentially available parallelism in programs. In this paper we will analyze at runtime the dynamic data dependencies among superblocks of sequential programs. We designed a meta re-arrange buffer to measure and exploit the available parallelism, with which the superblocks are dynamically analyzed, reordered and dispatched to run in parallel on an ideal many-core processor, while the data dependencies and program correctness are still maintained. In our experiments, we observed that with the superblock reordering, the potential speedup ranged from 1.08 to 89.60. The results showed that the potential parallelism of normal programs was still far from fully exploited by existing technologies. This observation makes the automatic parallelization a promising research direction for many-core architectures.     

Dietary fatty acids regulate cholesterol induction of liver CYP7α1 expression and bile acid production

In the present study we investigated the effects of dietary fats containing predominantly PUFA, monounsaturated FA (MUFA), or saturated FA (SFA) on lipid profile and liver cholesterol 7α-hydroxylase (CYP7α1) mRNA expression and bile acid production in C57BL/6J mice. The animals (n=75) were randomly divided into five groups and fed a basic chow diet (AIN-93G) (BC diet), a chow diet with 1g/100g of cholesterol (Chol diet), a chow diet with 1g/100g of cholesterol and 14g/100g of safflower oil (Chol+PUFA diet), a chow diet with 1g/100g of cholesterol and olive oil (Chol+MUFA diet), or a chow diet with 1g/100g of cholesterol and myristic acid (Chol+SFA diet) for 6 wk. The results showed that the Chol+SFA diet decreased CYP7α1 gene expression and bile acid pool size, resulting in increased blood and liver cholesterol levels. Addition of PUFA and MUFA to a 1% cholesterol diet increased the bile acid pool production or bile acid excretion and simultaneously decreased liver cholesterol accumulation despite decreased CYP7α1 mRNA expression. The results indicate that the decreased bile acid pool size induced by the SFA diet is related to inhibition of the liver CYP7α1 gene expression, but an increased bile acid pool size and improved cholesterol homeostasis are disassociated from the liver CYP7α1 gene expression.     

Electrosyntheses and characterization of poly(5‐bromoindole) in boron trifluoride diethyl etherate

Poly(5‐bromoindole) (PBrI) films were synthesized electrochemically by direct oxidation of 5‐bromoindole in pure boron trifluoride diethyl etherate. The oxidation potential of 5‐bromoindole in this medium was measured to be only 0.97 V vs. saturated calomel electrode, which was lower than that determined in acetonitrile + 0.1 mol L^?1 Bu₄NBF₄ (1.08 V). PBrI films obtained from this medium showed good electrochemical behavior and good thermal stability. Structural studies showed that the polymerization of 5‐bromoindole ring occurred at 2,3 position. As‐formed PBrI films were thoroughly soluble in strong polar solvent dimethylsulfoxide and partly soluble in tetrahydrofuran. Fluorescent spectral studies indicated that PBrI was a good blue‐light emitter. The excitation and emission spectra of PBrI showed a significant shift to longer wavelength compared with that of the monomer, consistent with the greater extent of electron delocalization. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 539–547, 2006