氢

XRD and NMR analyses showed that a type of semicrystalline structure existed in the precipitate. However, ether-based polymeric structure was uncrystallizable due to existence of the complex intermolecular hydrogen bonding interaction.

结合XRD和核磁共振分析结果推测：硫脲甲醛聚合产物中存在着一种氢键导向型结晶结构；分子中含有醚键的聚合产物因具有复杂的氢键作用没有结晶性。

The main results are as follows:(1) During HD process, the melt spun ribbon absorbed hydrogen and decomposed into NdH_2,_2B,α- and some undecomposed 2:14:1 phase.

得到的主要结论如下：(1)在吸氢岐化过程中，快淬薄带吸氢歧化生成NdH_2、_2B、α-，以及未分解的2：14：1相。

Bisulfite modification: A total of 1μg of genomic DNA, obtained from culture cells or tissues, was modified by sodium bisulfite to convert unmethylated cytosines to uracils.

2亚硫酸氢钠修饰取1μg上述DNA经亚硫酸氢钠处理，将非甲基化的胞嘧啶转变为尿嘧啶，而甲基化的胞嘧啶保持不变。

The costuslactone and dehydrocostuslactone in the supercritical CO 2 extract of aucklandia were identified by TLC using a mobile phase of petroleum ether,ethyl acetate and benzene (70∶5∶15) and the colour developing reagent of 5% vanillic aldehyde dissovled in sulfuric acid.

用薄层色谱法，以ψ(石油醚∶乙酸乙酯∶苯)=70∶5∶1 5为展开剂，质量分数为 5 %香草醛硫酸为显色剂对木香超临界萃取物中的木香烃内酯与去氢木香内酯进行鉴别；并建立高效液相色谱法同时测定木香烃内酯与去氢木香内酯的含量方法。

Abstract］ objective to compare with curative effect and adverse reaction on renal anemia of hemodialyses patients with fe3 dextran venously and ferromyn orally.methods 60 hd patients were divided into venous group and oral group randomly and there were 30 patients in each group,100 mg cosmofer were used one hour by vein point of dialyser before hd was completed in hemodialyses patients in venous group 200 mg amber acid subiron was taken by the patients in oral group three times a day and two months in total.recombinant human erythropoietine was used at a dose of 100～150 u/kg?

摘要］ 目的比较静脉注射右旋糖酐氢氧化铁和口服琥珀酸亚铁治疗血液透析患者肾性贫血的疗效和不良反应。方法选择60例hd患者，分为静脉补铁组和口服补铁组，每组30例。静脉补铁组：每次透析结束前1 h注射100 mg右旋糖酐氢氧化铁，从透析器静脉端输入，时间维持1 h；口服补铁组：琥珀酸亚铁200 mg，每日3次，连续口服2个月。两组同时使用基因重组人红细胞生成素100~150 u/kg？

Based on the analysis of the Jahn-Teller effect,vibronic interaction and the resolution of group representations, the possiblegcometrical configurations of 〓 have been derived for the first time, the results arein good agreement with the calculation esults.Firstly, the reasonable dissociative limits for the diatomic molecules of ZrCo,ZrH, CoH, UH,〓 and AlNi have been derived based on the Atomic and MolecularReactive Statics and the resolution of group representations. The groundelectronic states, which are 〓,〓,〓 and 〓 respectively for thesemolecules, have also been optimized based on the RECP method.

本文根据相对论有效原子实势和密度泛函理论方法(B3LYP／SDD与B3LYP／6-311G〓)，用Gaussian-98W程序研究了ZrCo、ZrH、CoH、UH、〓、AlNi、〓、HZrCo和〓分子的分子结构、分析势能函数、微观力学性质和光谱性质；首次建立了计算固体金属氢化物体系宏观性质理论模型，并应用于ZrCo、Zr和Co的氢化反应体系研究，理论计算与实验结果基本一致；基于Monte-Carlo准经典轨线方法，首次研究了H与ZrCo和Co与HZr的分子反应动力学。

The invention relates to a preparation method of vinylene carbonate, which comprises halogenated ethylene carbonate and dehydrohalogenation agent which are subject to contact reaction. The dehydrohalogenation agent is ammonia with a purity of not less than 99.9 percent.

一种碳酸亚乙烯酯的制备方法，该方法包括将一卤代碳酸乙烯酯与脱卤化氢剂进行接触反应，其中，所述脱卤化氢剂为纯度不低于99.9％的氨气。

Volta also experimented with finding the best explosive mixture of hydrogen and air, and of hydrogen and oxygen.

伏打也以发现氢加空气和氢加氧的最好易爆发混合作实验。

We got a conclusion that only biflavonoids bearing flavan moiety existed in Daphne gemus, that biflavanones and chamaechromonoids existed in Stellera genus, and that biflavanones and biflavonoids bearing flavan moiety existed Wikstroemia species. The opinion that biflavanones only existed in Stellera genus was corrected and they were also found in Wikstroemia genus.

通过总结发现，在瑞香属的植物中仅存在含有黄烷单元的双黄酮类化合物；狼毒属植物中存在双二氢黄酮类，狼毒色原酮类以及少数含有黄烷单元的双黄酮，而且目前发现狼毒色原酮类仅存在于该属植物中；荛花属植物中存在含有黄烷单元的双黄酮类和双二氢黄酮类。

The influence of many factors on hydrogen storage capacity is emphatically analyzed, such as the zeolitic structures, Si/Al ratio, type of cations in zeolites and the difference of adsorption experimental conditions, etc.

重点分析了沸石的结构类型、硅铝比、阳离子类型及吸附实验条件差异对储氢量的影响，并讨论了超临界吸附理论模型的发展状况，最后探讨了沸石作为储氢材料的可行性和发展方向。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐