氯化铁催化合成富马酸二甲酯

氯化铁可代替硫酸催化酯化反应，探讨了氯化铁催化合成富马酸二甲酯的条件，操作简便，反应温和，无腐蚀，减少了污染与产品纯化。     

聚合铝生产工艺研究

以铝矿为原料，在常压下，采用两段溶出法，对聚合铝的合成工艺进行了系统研究。     

丙烯酸酯单体对聚氯乙烯密封胶粘剂的改性作用

丙烯酸酯有较大的反应活性，能与聚氯乙烯发生接技共聚反应。本文中，我们着重研究不同结构丙烯酸酯单体对聚乙烯基密封胶粘剂的改性作用。以PVC为100份，分别加入甲基丙烯酸一缩二乙二醇双脂（DEGDMA），甲基丙烯酸乙二醇双酯（EGDMA）和丙烯酸一缩二乙二醇双酯（DEGDA）各为10份、20份、30份的试验结果看出，随着丙烯酸酯单体添加量的增加，PVC片基的硬度增大，拉伸强度提高，而伸长率降低。不同的单体其影响也不同。就硬度和拉伸强度有EGDMA＞DEGDA＞DEGDMA的规律伸长率的降低则为DEGDMA＞DEGDA＞EGDMA。就丙烯酸…     

KCl与NaCl在低盐固态法酱油发酵中的应用比较

对KCl与NaCl在低盐固态酱油发酵中的应用进行了比较研究。结果表明：用KCl代替NaCl，KCl的浓度要高于NaCl才能抑制发酵期间杂茵的污染，且使用KCl的发酵效果比NaCl要好。     

Validation of a Method of Determination of Apparent Diffusivity Versus Composition in Solids

A method is presented for computing the values of apparent diffusivity in solids with respect to the concentration of the diffusing substance (water or sodium chloride). This method does not require any assumption upon the mathematical relationship between diffusivity and concentration. It can be applied to experimental measurements of local concentration versus position within the solid (profiles) with relatively few measurements (circa 10) and a mathematical smoothing of the experimental data by using an artificial neural network model. The method was first validated on simulated data obtained by using a constant diffusivity value and on experimental profiles when the relation between diffusivity and concentration was given. It was then applied to original experimental moisture profiles obtained by putting gelatin gels with different initial moisture contents into contact for up to 14 days. The method was also successfully applied to five sets of experimental moisture and sodium chloride profiles taken from the literature and obtained from different food products. Apparent diffusivities calculated by our method were found in agreement with those obtained by authors using different numerical methods to compute the diffusivity values.     

示波极谱滴定法测定工业氯化钙主要成份

在氯化铵-氨水(pH=11)支持电解质中用微银汞膜电极进行试验,锰、铁不干扰测定,用EDTA滴定氯化钙获得令人满意的结果。对三种样品进行分析,变异系数为0.08％—0.11％。该法快速准确,适用于氯化钙主要成份的测定。     

助催化剂对TiCl_4/MgCl_2催化丙烯高温聚合的影响

研究了助催化剂种类(三甲基铝、三异丁基铝、三正己基铝、三乙基铝和甲基铝氧烷)及其含量对无内、外给电子体的TiCl4/MgCl2催化剂催化丙烯高温(100℃)聚合性能的影响,并用结晶分级分析、示差扫描量热和凝胶渗透色谱等方法分析了所得聚丙烯的结晶熔融行为和微观结构。实验结果表明,聚合温度从70℃升至100℃时,TiCl4/MgCl2催化剂的定向能力基本不变;100℃聚合时,以烷基化能力较弱的三异丁基铝为助催化剂时TiCl4/MgCl2催化剂的活性最高,而采用烷基化能力最强的三甲基铝为助催化剂时TiCl4/MgCl2催化剂的活性最低;100℃聚合时,助催化剂的种类对TiCl4/MgCl2催化剂的定向能力影响很小。     

The extracorporeal circuit: Materials,problems, and solutions

The extracorporeal circuit in hemodialysis and related therapies facilitates passage of blood to and from the patient and forms an integral link with the safety systems of the proportioning system. Historically, elements of the circuit were subject to problems such as spallation introduced by the blood pump and plasticizer from the tubing sets leaching into the blood. Many of these early issues have been largely resolved, although there is still potential for further improvement and innovation. The introduction of such improvements and innovations into clinical practice is critically dependent upon their cost and benefit to patient and renal unit staff.     

Consumption of solutions containing sodium chloride is enhanced in female oxytocin-deficient mice.

Intact and ovariectomized oxytocin (OT)-deficient (OT-/-) and wild-type (OT+/+) mice were tested for consumption of 0.5 M NaCl solution or tap water in a 2-bottle choice test. During 3 days of acclimation, voluntary ingestion of NaCl was equal between genotypes. After overnight fluid deprivation, intact OT-/- mice ingested 2 times more NaCl solution than OT+/+ mice in the 6th hr, but not the 1 st hr, after reintroduction of fluid. Ovariectomized mice consumed less than intact mice after overnight fluid deprivation. When a 0.2 M NaCl solution was administered for 6 days in ovariectomized mice, OT-/- mice voluntarily consumed greater amounts than OT+/+ mice. After overnight fluid deprivation, consumption by OT-/- mice was 3 times that of OT+/+ mice at 1 hr and 2-fold greater after 6 hr. Enhanced intake of NaCl-containing solutions in female OT-/- mice suggests that central OT may be an important inhibitor of sodium consumption. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

腐蚀环境中海工混凝土抗氯离子侵蚀性

模拟我国南方沿海浪溅区和水位变动区的海工钢筋混凝土结构物的腐蚀环境，对掺入粉煤灰和矿渣的混凝土抗氯离子侵蚀性进行了试验。结果表明，在水灰比相同的条件下，加掺和料的混凝土抗氯离子侵蚀性高于普通混凝土。