碘宝冲剂的研制、临床应用及微量元素碘的测定

以新鲜功能性保健碘蛋为原料．不减损鸡蛋原有营养成分．经科学方法加工而成纯天然补碘制品——碘宝冲剂．经初步临床观察，本品具有碘蛋的相同疗效，并测定了本品微量元素碘的含量．     

微量元素锌的临床应用动态

综述了微量元素锌临床应用的进展，应用领域包括：加速人体生长发育，增加组织再生能力，增强免疫功能，改善食欲及消化和用于治疗某些疾病。     

补充（Cu）和锌（Zn）纠正了畸胎的发生

病人经各项检查均未查出致畸原因。但查微量元素后发现铜（Cu）和锌（Zn）均低于正常值,经补充铜和锌后,均生健康婴儿。血清铜正常值为0．80—1．20μg／mL,血清锌正常值为0．70～1．20μg／mL。     

营养不良儿童与发锌关系的研究

报告７１例６个月至７岁营养不良儿童与对照组１３７例健康儿童的发锌含量研究结果。调查结果表明，营养不良儿童发锌含量差异极其显著．Ｐ＜０．０１，表明微量元素锌对小儿的生长发育有明显的影响，符合文献报道的关于体辞水平与儿童营养不良的身体发育障碍显著相关．为临床应用锌剂综合治疗营养不良疾病提供科学依据。     

儿童呼吸道感染与发锌含量观察

采用原子吸收分光光度法对８６例呼吸道感染患儿发中锌含量进行测定，结果表明：呼吸道感染患儿发锌含量均低于对照组，经统计学处理有显著性差异，Ｐ〈０．０１，提示微量元素锌的缺乏可能是造成小儿机体免疫功能低下，易感染性疾病的病因之一。     

急性腹泻患儿血、发微量元素锌含量分析

为了观察急性腹泻患儿血、发中微量元素锌的变化,测定了32例急性腹泻患儿血、发中的微量元素锌并与正常儿童值进行对照。结果显示,急性腹泻患儿发锌含量明显低于正常对照组,且差异非常显著,P＜0．01,而血锌与正常对照组之间无显著差异。提出缺锌儿童易患腹泻病,认为合理补充微量元素锌,有助于该疾病的防治。     

青果锌口服液疗效观察

观察了青果锌口服液的疗效。结果表明,该口服液经铅过高的婴幼儿166例试食,总有效率95.8%,疗效显著;用于铅、镉、铝偏高,钙、镁、锌偏低的秃顶或脱发成年人5例,全部有效。提示本品有排毒、生发、改善胃肠功能、改善睡眠等作用。     

亚临床肝性脑病患者的血清锌,铜含量的测定及临床意义

检测了３０例慢性活动性肝炎患者、３０例肝硬化患者、３０例亚临床肝性脑病患者血清中的铜、锌含量，并与正常对照组进行比较分析，探讨了微量元素铜、锌的血清含量改变及其影响因素，分析其临床意义。结果表明体内的铜锌含量与肝脏功能有密切的关系。在慢性活动性肝炎时，虽然肝脏功能有一定的损害，但由于肝脏的代偿能力强，铜，锌含量仍可保持在正常水平，而在肝硬化、亚临床肝性脑病时，铜锌明显降低，而铜锌含量的降低又导致机     

锌、铜元素与优生优育

郑州市第一人民医院对185例分娩前健康孕妇与足月正常新生儿作发锌、铜测定，其中85人作血清锌、铜测定，10月后随访62例母婴发锌、铜含量．以探讨微量元素锌、铜与优生优育的关系。     

冠心病与微量元素锌铜硒

以临床典型冠心病案为例，探讨了中医中药传统和微量元素关系，重点讨论了微量元素锌、铜、硒与冠心病的病因病理和治疗的关系。     

治疗小儿厌食症中药强壮灵冲剂微量元素测定及其与疗效关系探讨

已证明小儿厌食症除与缺乏微量元素锌关系密切外,还与其他多种微量元素和宏量元素的缺乏或低下也有关。本院以自行研制的中药强壮灵冲剂治疗小儿厌食症疗效显著。其于浸膏粉经２０余种微量元素测定表明含有锌、铁、钴、铜、镍、锰、铬、锗、锶、铝、钡、硒、硅、钛等多种人体必需且品种齐全,含量适度的微量元素。上述元素又恰是患儿体内所缺乏和低下的品种,无疑对患儿全面适度的补充大有裨益．中药强壮灵与西药硫酸锌临床对比研究表明,无论比发锌回升数值以及从厌食等全面疗效统计,中药组均明显优于西药组,并且发现疗效与药物的补锌量不成正相关。说明中药的调理脾胃功能及综合整体治疗作用是其突出优点,值得推广．     

Cacao seeds are a "Super Fruit": A comparative analysis of various fruit powders and products

Background  

Numerous popular media sources have developed lists of "Super Foods" and, more recently, "Super Fruits". Such distinctions often are based on the antioxidant capacity and content of naturally occurring compounds such as polyphenols within those whole fruits or juices of the fruit which may be linked to potential health benefits. Cocoa powder and chocolate are made from an extract of the seeds of the fruit of the Theobroma cacao tree. In this study, we compared cocoa powder and cocoa products to powders and juices derived from fruits commonly considered "Super Fruits".     

"上火"的机制及奶粉上火的探讨

对“上火”的定义、分类,机理及奶粉的定义、品种进行了分析.通过对清火物质的分析,提出了清火奶粉的清火机制,并对“喝了不上火”的系列奶粉进行了生产工艺及营养学设计的探讨.     

Microstructure of Nickel Aluminides Formed in Situ in Aluminium Matrix Composites

Nickel aluminides formed in situ in aluminium matrix composites due to the interaction between nickel powder and the matrix were examined. The composite materials were obtained from mixtures of nickel powder and aluminium powder by hot pressing in vacuum in the temperature range of 500–640°C. Depending on hot pressing parameters, the morphology of nickel aluminide particles was layered or homogenous, and their size for the same precursor powder was growing as the pressing temperature increased. XRD, SEM, TEM and EDS characterization methods were used for the microstructure investigation.     

X-ray and neutron diffraction studies on "Li4.4Sn"

A chemical analysis and detailed structural characterization, using X-ray single crystal and neutron powder diffraction, of the binary lithium-tin compound "Li(4.4)Sn" is presented. Phase analyses and subsequent structural refinements result in the reformulation of "Li(4.4)Sn" as Li(17)Sn(4). The lithium-rich binary phase crystallizes with a complex cubic structure in the space group Ffourmacr;3m, with a = 19.6907(11) A, Z = 20. The improved crystal structure determination indicates well-defined lithium atom positions, some of which differ from those previously reported. The nearly Zintl phase Li(17)Sn(4) exhibits poor metallic behavior similar to that of heavily doped semiconductors. Comparisons of the refined crystal structure with previously reported X-ray crystal structures associated with "Li(4.4)Sn" are discussed.     

Improving the performance of methylalumoxane: a facile and efficient method to trap "free" trimethylaluminum

The presence of "free" trimethylaluminum (TMA) in methylalumoxane (MAO) solutions can be highly detrimental to the performance of metallocene and "post-metallocene" olefin polymerization catalysts. The most used strategy to remove "free" TMA is to evaporate MAO solutions to dryness, until a free-flowing white powder ("solid MAO") is left. This procedure is tedious and potentially hazardous, because in some cases the distillate is a concentrated hydrocarbon solution of TMA. Moreover, "solid MAO" is poorly soluble in common polymerization media, and once in solution it can regenerate TMA to some extent. This communication reports on a facile alternative, which consists in the controlled addition of a sterically hindered phenol, such as 2,6-di-tert-butylphenol, effectively trapping "free" TMA. We show here that 2,6-di-tert-butylphenol/MAO solutions activate equally well the dichloro-precursors of well-known zirconocene and bis(phenoxyimine)Ti catalysts, and that their use in propene polymerization results in a substantially higher productivity, polymer stereoregularity, and/or average molecular mass compared with activation by MAO alone.     

Analysis of water in liquid and solid samples by headspace gas chromatography

Summary The water content of solid samples, which are insoluble in organic solvents, is determined by equilibrium headspace gas chromatography after suspending the samples in a water-miscible dry solvent such as ethylene glycol monomethylether. The accuracy of this suspension approach was tested with sodium tartrate-2-hydrate, a calibration standard for the Karl-Fischer titration, and good agreement was found. Partical applications are given for water analysis in an ionic detergent, in paper, and in solid food samples such as instant soup or drink powder and roasted coffee. The preferred calibration procedure was the standard addition technique, but internal or external standard calibration is also possible, particularly in the case of insoluble samples since the water only is extracted into the solvent. The resulting aqueous solution in the organic solvent represents an ideal matrix for all calibration techniques. The suspended particles from the solid sample were found not to cause additional matrix effects.Paper presented partly at the International Symposium Die Bestimmung des Wassers organized by the Fachgruppe Analytische Chemie der GDCH, Hannover, 4–6 November, 1987.Part I: Fresenius Z Anal Chem 336:291–296     

Ba3Fe2WO9−δ: Effect of oxygen non-stoichiometry on structural and magnetic properties

The magnetic and structural properties of oxygen-deficient perovskites with composition Ba₃Fe₂WO_9−δ (BFWO) have been systematically studied for two different oxygen contents corresponding to δ=0.00 and 0.55 in the chemical formula in order to determine and correlate their chemical composition, structural and magnetic properties. The evolution of nuclear and magnetic structures with temperature has been investigated by neutron powder diffraction. It was shown that at room temperature the stoichiometric compound (δ=0.00) adopts a hexagonal 6H-perovskite structure (space group P6₃/mmc). This phase, when heated at high temperature under a stream of Ar gas, transforms to an oxygen-deficient phase δ=0.55), which is an ordered cubic perovskite structure (space group Fm-3m). The crystallographic and magnetic properties of the obtained phases are compared, and it is clear that the magnetic properties are significantly affected by oxygen non-stoichiometry. These changes of magnetic properties for such a slight decrease in oxygen content are interpreted as a result of structural transformations. Together with the experimental results based on neutron powder diffraction data a discussion of some aspects of the structural transformation () is presented.     

碳质金矿中金的化学物相分析方法改进

为了解决碳质金矿金化学物相分析结果与选矿试验结果不符的问题,基于岩矿鉴定和测试结果对分析流程进行改进。方法改进后测试项目包括裸露金和半裸露金、有机碳石墨包裹金、碳酸盐包裹金、褐铁矿包裹金、黄铁矿包裹金、石英和硅酸盐包裹金6项。有机碳石墨包裹金选用Na_2S_2O_3–CuCl_2–NH_4OH–NH_4Cl体系为浸金剂,取代I_2–NH_4I体系,该体系中金的测定采用铜置换原子吸收法。裸露金半裸露金、有机碳石墨包裹金和黄铁矿包裹金的相和为82.34%,与选矿试验金精矿实际回收率(75.83%)基本吻合。改进后的方法适合碳质金矿金化学物相分析。