羚羊角尖部、基部、骨塞中的无机元素含量与药性关系的研究

The inorganic elements in the tip, base and bony structure of horn of saiga tatarica L. and the commodity powders of Saigae tatarica were determined by electron probe analysis.The relations between inorganic elements and the property of drug were furtherly studied. This study provides an experimental basis for clinical practice and quality control of the commodity powder of Saigae tatarica.     

七种无机元素与中药药性的相关性研究

本文研究支持向量机用于中药药性识别的可行性.选择7种无机元素在中药中的含量为指标,运用支持向量机对193种不同药性的中药进行训练,建立平性与非平性中药的预测模型.结果训练集识别正确率95.03%,建立的模型对预测集中平性药的识别正确率为82.14%,对非平性药的识别正确率为70%,总正确率为73.58%.     

南药巴戟天中十二种无机元素与药效关系的进一步研究

在初步研究的基础上，进一步研究了不同产地巴戟天的无机元素含量差异，通过对比各元素含量、相关系数及TE图谱，说明地道药材与非地道药材的巴戟天，其特征元素的含量存在非常明显的差异，要使大面积扩种的药材提高药效，建议根据当地土壤含Mn、Fe、Cr、Co、Ni的含量，以旋微量元素肥料的方法来补充这些元素在土壤中的不足。但在微量元素肥料配方中，应注意巴戟天吸收土壤中的元素时的协同作用和拮抗作用。     

金刚石复合界面扩散系数的电子探针研究

结合金刚石与硬质合金复合材料的研究，对含轻元素的界面扩散问题提出了能谱仪与波谱仪原位互补分析研究的方法，从扩散深度和扩散浓度分布两种角度探讨了扩散系数的电子探针测定；同时讨论了该方法在金刚石与硬质合金复合钻头上的应用。     

大学无机化学与高中化学知识衔接——以原子结构与元素周期表为例

原子结构理论是高中化学和大学无机化学的重要组成部分和学习难点,教学过程中如何较好地衔接高中阶段知识与大学无机化学课程尤为重要。本文以原子结构和元素周期表知识点为例,以2019版高中人教版教材和北师大版的无机化学教材内容讨论高中化学知识与大学化学知识的衔接问题,依据作者的教学实践提出若干建议,为大学无机化学原子结构与元素周期表知识点的教学提供参考,同时帮助大一学生顺利完成知识的衔接过渡和培养学生独立思考、自主学习的能力。     

正常人与肝气郁结证人指甲中无机元素的比较分析

为探讨正常人与肝气郁结证指甲中特殊无机元素谱的差别,进而为人指甲的临床诊断及药效物质基础的探讨提供实验依据,采用扫描电子探针法测定了正常人与肝气郁结证患者指甲中炭化灰中无机元素。结果表明,正常人指甲炭化灰无机元素特征谱,有Ca和S两个呈正态分布趋势的特征性高峰;肝气郁结证指甲炭化无机元素特征谱只有一个Ca呈正态分布趋势的高峰。提示正常人与肝气郁结证具有不同的无机元素谱,肝气郁结证与体内无机元素发生代谢紊乱有关。     

小儿支气管哮喘与免疫功能及微量元素关系的临床研究

通过临床对照研究,发现哮喘患儿血Ｔ淋巴细胞亚群Ｔ３、Ｔ４、Ｔ８及Ｔ４／Ｔ８比健康对照组显著低下（Ｐ＜０００５）,而总ＩｇＥ则显著升高。患儿血中必需微量元素Ｚｎ、Ｓｅ、Ｃｒ、Ｓｒ及宏量元素Ｂ、Ｍｇ比健康对照组显著降低,而Ｆｅ、Ｃｕ、Ｃａ、Ｖ、Ａｌ、Ｃｏ及有害元素Ｃｄ则显著升高（Ｐ＜００５）。结果表明,小儿哮喘与人体免疫缺陷、部分微量元素降低及有害微量元素升高密切相关。提示：提高人体免疫功能、调节微量元素代谢失衡对提高哮喘防治效果有重要意义。     

100例皮肤病患者发样微量元素的检测及多因素分析

对100例皮肤病患者发样中的Zn、Cu、Fe、Ca及Mg五种元素进行了检测，采用主成分分析及因子分析法对分析数据进行了统计学处理，探索皮肤病与该五种元素的关系，结果表明：Zn、Mg元素水平是皮肤病的重要样本特征，其中Mg元素是皮肤病的一个重要影响因子。其水平偏高及偏低者占病例数的92％；Cu、Fe元素水平基本正常；缺Zn影响则不是主要因素，低Zn者只占8％。可将皮肤病分为两大类：(1)Zn、Mg元素水平偏高类；占病例数的58％。(2)Ca、Mg元素水平偏低类，占病例数的32％。     

引种地、采收期及药用部位对槟榔微量元素含量的影响

以等离子体发射光谱法测定了槟榔中２０种微量元素含量．结果表明，广州产槟榔所含１１种人体必需微量元素含量与进口摈榔接近，Ｐｂ、Ｃｄ、Ａｓ含量较低．槟榔不同部位微量元素含量均有显著差异。未成熟的槟榔种子微量元素含量与成熟种子有显著差异，其Ｐｈ含量达２．２１×１０－６，为成熟种子Ｐｂ含量的２０倍。     

New In-Situ Sampling and Analysis of the Production of CeO<Subscript>2</Subscript> Powders from Liquid Precursors in a rf Thermal Plasma Reactor. Part 2: Analysis of CeO<Subscript>2</Subscript> Powders,Fuel Addition,and Image Analysis

A novel reactor design, sampling probe and wet collection system were used to investigate the combined effects of plasma operating parameters and particle collection mechanisms on the synthesis of CeO₂ particles from liquid precursors. The sampling of particles in-flight and the collection of particles at several reactor regions were used to provide experimental evidence of particle size at different reactor locations at various plasma operating conditions, i.e., power and plasma gas flow rates. This information provided a picture of how CeO₂ particles were formed and how these particles were collected in various locations. The effect of adding water-soluble fuels (alanine and glycine) to the original cerium nitrate solutions was also investigated. Fuel addition decreased the temperature of CeO₂ formation by acting as a local heat source as a result of fuel auto-ignition. Photographs of the particles in-flight were taken using a fast speed CCD camera.     

Thermodynamic and spectroscopic study of the interaction of Cu(II), Ni(II), Zn(II) and Ca(II) ions with 2-amino-N-(2-oxo-2-(2-(pyridin-2-yl)ethyl amino)ethyl)acetamide,a pseudo-mimic of human serum albumin

The protonation equilibria of 2-amino-N-(2-oxo-2-(2-(pyridin-2-yl)ethyl amino)ethyl)acetamide ([H₂(556)–N]) and the complexation of this ligand with Cu(II) Ca(II), Zn(II) and Ni(II) have been studied by glass electrode potentiometry and UV–visible spectrophotometry. From pH ∼2.00–11.00, five models for Cu(II) with the following complexes; MLH, ML, MLH₋₁, MLH₋₂ and MLH₋₃ were generated and observed to describe the experimental data equally well as far as the statistical criteria were concerned. The MLH₋₂ complex predominates at physiological pH in all five models, while the MLH₋₁ complex species exists only at low concentration in two models. The coordination in the MLH₋₂ complex suggested the involvement of one amino, two deprotonated peptides and one pyridyl nitrogen atoms. Molecular mechanics (MM) calculations confirmed the MLH₋₂ complex as the most stable species. Speciation calculations, using a blood plasma model, predicted that the Cu(II)–[H₂(556)–N] complex is able to mobilize Cu(II). Octanol/water partition of CuLH₋₂ showed that 30% of the complex went into the octanol phase, hence promoting percutaneous absorption of copper. The complex is a poor mimic of native copper–zinc superoxide dismutase.