正负离子表面活性剂相互作用的理论和实验研究

Typical cationic and anionic surfactants were chosen and their interactions were calculated by quantumchemical method. Interaction energies are -0.2378kJ·mol~(-1),-3.3394kJ·mol~(-1) and 0.1204kJ·mol~(-1) for the molec-ular pairs with fluocarbon and hydrocarbon chain: C_4H_(10)/C_5H_(12), C_4F_(10)/C_5H_(12), and C_4F_(10)/C_5F_(12), respectively.When hydrophilic group with cationic and anionicions is introduced, interaction energies are -287.40kJ·mol~(-1),-311.18kJ·mol~(-1) and -345.83kJ·mol~(-1). The results show that there is strong static interaction between cationicand anionic surfactants. It has been predicted that mixed monolayer may be formed and surface activity is en-hanced favorably, especially for mixtures of cationic and anionic surfactants with fluocarbon and hydrocarbonchains. The anionic surfactants, sodium octadecylbenzenesulfonate perfluopolyetherbenzenesulonate(ANF-Ⅰ)wassynthesized, mixture effects of ANF-Ⅰ with sodium octadecylbenzenesulfonate or dodecyldimethyl benzylammonium     

笨骈噻吩酮衍生物甲川型分散染料的研究(Ⅱ)染料分子结构与固色性能

本文对苯骈噻吩酮衍生物甲川型分散染料不同的结构品种,进行了热熔固色率测定;研究了染料分子结构与染料在涤纶上的固色性能,染料的溶解度参数与固色率的关系.     

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。     

马来酸酐－醋酸异丙酯二元固液平衡的测定和关联

马来酸酐－醋酸异丙酯二元固液平衡的测定和关联陈新志侯虞钧（浙江大学化工系，杭州３１００２７）关键词固液平衡活度系数１引言相平衡数据在化工生产和研究中占有重要的地位。流体相平衡已得到了广泛的研究，并积累了大量的数据，与之相应的实验方法也较为完善，同时...     

粘胶纤维厂制冷系统压缩热的利用

根据粘胶纤维生产的特点,利用制冷压缩机产生的压缩热优化设计粘胶纤维厂制冷系统。该制冷系统是先将制冷压缩热作为包装箱烘干线的热源进行第一次利用,其加热的软水进行第二次利用。该制冷系统取消了常规设计中的冷却系统设备。结果表明:粘胶纤维厂制冷系统采用这种优化方法,制冷系统压缩热有效利用率达53%,节电12.5%,相当于制冷系统能耗减少60%以上。     

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.