海口市214例人发中微量元素分析

应用电感中耦合等离子体发射光谱法（ＩＣＰ－ＡＥＳ），测定了海口市２１４例人发中锌、失、钙、锰的含量，按照年龄不同划分为婴儿组、幼儿组、大儿童和青少年组及成人组。对同一元素不同年龄组进行统计分析，表明幼儿和青少年处于生长发育时期最易缺乏微量元素。     

西安市某辖区2～6岁儿童全血样品微量元素含量状况调查

摘要对西安市某辖区妇幼保健站及多家幼儿园920名2～6岁身体健康儿童的全血样品进行微量元素检测,统计得到该区域正常儿童微量元素的含量范围,为准确了解西安地区某区域2-6岁正常儿童体内微量元素正常含量提供了参考数据。     

儿童多动症与微量元素关系的探讨

为了探讨儿童多动症与微量元素的关系，测定了７２例多动症患儿头发中的六种元素Ｚｎ、Ｃｕ、Ｐｂ、Ｃｒ、Ｆｅ、Ｃａ含量，并将其与正常儿童进行比较，结果表明：多动症组Ｃｕ显著低于正常组，Ｐ〈０．０１，多动症组Ｚｎ显著低于正常组，Ｐ〈０．０５，多动症组Ｐｂ显著高于正常组，Ｐ〈０．０５。提示调整患儿体内微量元素平衡可作为治疗儿童多动症的辅助方法。     

伦教镇2020名儿童指血微量元素调查分析

测定了伦教镇2020名3～6岁儿童指血中锌、铁、钙、铅四种元素含量,了解其分布情况。结果显示,铁、钙缺乏少见,部分儿童仍有锌缺乏;总体情况,男、女儿童的锌、铁、钙三种微量元素的平均值均处于正常范围,血铅的平均值则偏高。     

孝感地区学龄前儿童微量元素水平及生长发育情况调查

目的调查孝感地区学龄前儿童微量元素水平及生长发育情况。方法研究对象源于孝感市中心医院儿科2014年10月—2015年10月收纳的1 357名学龄前儿童,按年龄0~5岁依次分为Ⅰ组~Ⅵ组。对所有入选对象进行体格检查和微量元素锌、铁、钙、镁、铜水平检查,统计各年龄段儿童微量元素水平。根据体格发育水平,将全体儿童分为生长发育正常组(1 028例)和生长发育迟缓组(329例),比较两组儿童体内血微量元素水平。结果不同年龄段儿童各微量元素水平组间比较差异有统计学意义(P0.05),随年龄增长,儿童体内各微量元素水平也随之提升;较生长发育迟缓组,生长发育正常组儿童微量元素锌、铁、钙、铜、镁水平高,两组比较差异有统计学意义(P0.05)。结论孝感地区学龄前儿童微量元素水平普遍达标,仍有少部分儿童微量元素相对缺乏,可引起其生长发育迟缓,儿童家长应给予高度重视。     

儿童发铁含量与视觉保护记忆关系的探讨

用方差分析的方法对广州市１０６名儿童头发中微量元素铁的含量与视觉保持记忆的关系进行了研究，结果表明，发铁含量低于正常的儿童视觉保持记忆的能力明显差于发铁含量正常的儿童。     

弱视儿童血清微量元素的检测分析

为探讨弱视和微量元素之间的关系,对71例5~10岁的弱视儿童进行了血清微量元素Zn、Fe、Cu、Ca、Mn、Pb含量的检测,并与130例同龄正常儿童比较。结果表明,弱视儿童血清Zn含量明显低下,而Pb、Ca、Mn含量明显升高,与正常儿童比较差异均有显著性(P<0.01);Fe、Cu含量两组间差异无统计学意义(P>0.05)。弱视女童血清Mn含量比男童高,两组间比较差异有统计学意义(P<0.05);而男女童Zn、Fe、Cu、Ca、Pb含量间差异无统计学意义(P>0.05)。提示弱视儿童部分血清微量元素异常,对弱视成因有一定影响,建议重视并及时纠正儿童异常的微量元素。     

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。     

298例儿童血清中微量元素含量分析

为了解各年龄组儿童血清中微量元素缺乏情况，检测了湖南省龙山县人民医院门诊298例儿童血清中微量元素含量。结果表明，各年龄组儿童均有Ca、Zn、Fe的缺乏，其中以婴幼儿明显；随年龄增长微量元素缺乏率显降低趋势，但各年龄组仍有较高的缺乏率。因此，适量补充微量元素非常重要。     

儿童发铁含量与视觉保持记忆关系的探讨

用方差分析的方法对广州市１０６名儿童头发中微量元素铁的含量与视觉保持记忆的关系进行了研究。结果表明，发铁含量低于正常的儿童视觉保持记忆的能力明显差于发铁含量正常的儿童（Ｐ＜０００１）。     

280例患病生儿全血中14种元素变化的研究

于１９９７年６月－１９９８年１０月间对２８０例患４种常见病新生儿全血中１４种元素进行了检测,并与正常足月、顺产新生儿１００例对比。结果表明：（１）Ｇ－６ＰＤ缺陷引起的高胆红素血症组与正常组对照,男、女Ｆｅ、Ｚｎ均低于正常组;     

痤疮患者血清锌水平及加锌治疗效果

测定了60例寻常痤疮患者和60例健康正常人血清锌浓度,结果表明,寻常痤疮患者血清中锌的浓度明显低于正常人水平。对40例寻常痤疮患者在按常规治疗的同时给予口服硫酸锌治疗一个月,加锌治疗组的治疗有效率为90％,明显高于仅按常规治疗组的有效率（75％）。     

红外光谱振动模式分解及应用

本文用群论方法推出多原子分子正则振动模式的可约表示特征标公式,在IBM微机上实现程序化,使红外光谱振动模式分解更加简便、实用。并且给出AB_n(n=2～12)构型分子和碳原子簇C_n(n=20,24,50,60,70,84)的振动模式不可约表示。     

中国营养平衡米及其配膳微量元素NSF研究

报道了营养平衡米和普通籼米的微量元素含量和ＮＳＦ值。并将营养平衡米配膳和籼米配膳的ＮＳＦ值进行了比较。结果表明,每５００ｇ营养平衡米Ｚｎ、Ｃｕ、Ｆｅ、Ｍｎ、Ｓｅ的含量分别为１９．１０、３．７５、８．６５、１３．２５、０．０７ｍｇ,高于同量籼米的８．００、１．５０、２．５０、５．１０、０．０３ｍｇ;ＮＳＦ值分别为１２７、１８８、４８、５３０、１４０,高于籼米的５３、７５、１４、２０４、６０。营养平衡     

Kinetics and Mechanism of Monomolecular Heterolysis of Commercial Organohalogen Compounds: XXVIII. Effect of the Nature of the Verdazyl Indicator on Salt Effects in Dehydrobromination of 3-Bromocyclohexene in Nitrobenzene

The salt effect on the rate of dehydrobromination of 3-bromocyclohexene in PhNO2 depends on the nature of the verdazyl indicator. With triphenylverdazyl and its chloro and nitro derivatives in the presence of Et₄NClO₄, a normal salt effect is observed, in the presence of bromides, a superposition of normal and special salt effects, while in the presence of chlorides, a superposition of normal and special negative salt effects. With the dimethoxy verdazyl derivative, a normal salt effect is always observed.     

The determination of normal paraffins in petroleum products

A normal paraffin, outside the carbon number range of the sample, is quantitatively added to the sample as an internal standard, and 10–100 μl of the mixture are injected into a small absorber unit which contains 400 mg of activated molecular sieve. The temperature of the absorber unit is raised from ambient to 300° at about 15°/min while nitrogen is passed. This elutes the non-linear hydrocarbons but leaves the normal paraffins absorbed. The sieve is removed from the absorber unit and the paraffins are released by destroying the sieve structure with hydrofluoric acid. A pellet of potassium hydroxide is then added to neutralise the excess acid and the released normal paraffins are extracted in 0.3 ml of isooctane. This isooctane solution is examined on a programmed-temperature chromatograph; the chromatogram obtained consists of a solvent peak followed by well-resolved peaks representing the normal paraffins. These are easily measured and the concentrations of the normal paraffins in the original sample are calculated against the internal standard.     

Dispersion of normal modes in cis 1,4 polybutadiene

Among the synthetic polymers of commercial potential, poly-butadiene is an important rubbery material and it encompasses the bulk elastomers in use. To the best of our knowledge, a complete normal coordinate analysis with full phonon dispersion curves for cis 1,4 polybutadiene (CPBD) have not been reported so far. In the present communication, we report a complete normal coordinate analysis with full dispersion curves, density-of-states and calculation of heat capacity. The normal coordinate analysis has been carried out using the Urey-Bradley force field and the Wilson's GF matrix method as modified by Higgs. A comparison has been made with trans 1,4 polybutadiene (TPBD). The prominent features of the dispersion curves like crossing over and regions of zero-slope away from the zone centre are discussed. To check the validity of the force field used and the assignments, normal mode calculations are also performed for unsaturated C-deuterated and fully deuterated CPBD.     

单纯性肥胖症儿童血清锌铜铁钙的变化及意义

测定了福州地区88例单纯性肥胖症儿童及50例健康儿血清锌、铜、铁、钙含量。结果显示,肥胖组血清Zn水平显著升高,Fe、Cu、Ca水平无变化,Cu/Zn比值降低。说明体内微量元素变化以锌明显,铜相对缺少。对于疾病的治疗和控制有指导性价值。     

Extreme dark cytotoxicity of Nile Blue A in normal human fibroblasts.

Early reports using mouse models indicated that Nile Blue A (NBA) is taken up more efficiently by tumor cells than normal tissue and retards tumor growth. NBA also shows both dark toxicity and phototoxicity of human tumor cells in vitro. However, studies on the dark toxicity of NBA and the effects of NBA-mediated photodynamic treatment in normal human cells are lacking. In the current study we have examined the cytotoxicity of NBA in normal human fibroblasts, spontaneously immortalized Li-Fraumeni Syndrome (LFS) cells and three different human tumor cell lines. The normal human fibroblasts showed extreme sensitivity to NBA compared with LFS cells and the human tumor cell lines. Treatment with 0.1 microgram/mL of NBA for 1 h reduced the colony formation of normal human fibroblasts by greater than 95%, but had no significant effect on the colony formation of LFS cells. No significant numbers of apoptotic cells were detected in either normal human fibroblasts or LFS cells following this drug concentration. Thus, unlike photodynamic therapy with some other photosensitizers, the dark toxicity of NBA was not caused by apoptosis. Although the drug uptake was higher in normal human fibroblasts compared with LFS cells, the difference in sensitivity between normal human fibroblasts and LFS cells could not be accounted for by the difference in drug uptake alone. In addition, we could not detect any significant photocytotoxic effect of NBA in either normal human fibroblasts or LFS cells for a drug concentration of 0.05 microgram/mL at light exposures of up to 6.7 J/cm2. These data indicate an extreme sensitivity of normal human fibroblasts to NBA and an inability to produce a significant photocytotoxic effect on human cells using NBA concentrations that have relatively low toxicity for normal human fibroblasts.     

三种不同品种航天稻米微量元素含量比较分析

为探讨航天育种稻米营养品质的变异,开发功能性稻米,选择了3个航天育种稻米新品种,测定其亲本及其在不同栽培条件下Fe、Zn、Cu、Mn、Se 5种元素的含量变化,并以非航天优质稻米粳籼89为对照和自身对比进行比较。结果表明,常规栽培条件下粤航一号Se含量较其亲本提高,经施用"富硒康"栽培,Se含量较常规种植提高,与对照组对比差异有高度显著意义(P0.01);常规栽培条件下航香糯Se含量较其亲本提高,经施用"富硒康"栽培,Se含量较常规种植提高,与对照组对比差异有高度显著差异(P0.01);常规栽培条件下航小占Se含量比亲本减低,对比差异有高度显著差异(P0.01),经施用"富硒康"栽培,Se含量与其亲本Se含量相近,对比差异无显著意义(P0.05);3个航天品种稻米Fe、Zn含量有减弱,与亲本对比差异有显著意义(P0.01)。可见3种不同航天稻米品质存在品种差异、处理差异,粤航一号稻米对Se的生物富集能力显著高于其它两个航天稻米品种,更适合用作开发功能稻米。