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  simultaneous
    SIMULTANEOUS DETERMINATION OF CARBON, HYDROGEN AND HALOGENS IN ORGANIC COMPOUNDS WITH KORBL'S CATALYST
    碳、氢、卤素同时微量测定方法——利用Korbl催化剂
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    The Simultaneous Determination of Trace Elements Copper, Lead, Cadimium and Zinc in Serum by Square-wave Polarography (Ⅰ)
    方波极谱同时测定血清中的微量元素铜、铅、镉、锌(一)
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    SIMULTANEOUS ANODIC DIFFERENTIAL PULSE VOLTAMMETRIC DETERMINATION OF GUANINE AND ADENINE OF DEOXYRIBONUELEIC ACID (DNA)
    脱氧核糖核酸(DNA)中鸟嘌呤和腺嘌呤阳极差分脉冲伏安法同时测定
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    The Simultaneous Determination of Lead and Cadimium in Serum by Anodic Stripping Voltammetry
    阳极溶出伏安法同时测定血清中的铅、镉
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    An Oscillo-Polarographic Study of Aluminium-Gallium-Indium-Alizarine S complexes III Simultaneous determination of Gallium and Indium in ores
    铝镓铟—茜素S络合物的示波极谱研究——Ⅲ 矿石中镓和铟的同时测定
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    Computation Analysis of Multicomponent Spectrophotometry-Simultaneous Determination of Co,Ni,Cu,Zn,Cd with 5-Br-PADAP
    多组份分光光度计算分析—5-Br-PADAP同时测定钴、镍、铜、锌、镉
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    The Application of Chlorination to Atomic Emission Spectrographic Analysis-Simultaneous Determination of 10 Trace Elements in Geochemical Samples
    氯化反应在发射光谱分析上的应用—同时测定化探样品中十个痕量元素
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    Simultaneons Determination of Trace Heavy Metals in Waters by ICP-AES after Separation with MIBK Extraction
    APDC/MIBK萃取ICP-AES同时测定水中痕量重金属元素
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    Determination of Twenty Elemnts in River Sediment by ICP-AES
    ICP-AES法同时测定河流沉积物中二十个元素
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    DATA PROCESSOR BY APPLE-Ⅱ ASSOCIATED WITH 4-SETS OF 721 SPECTROPHOTOMETER
    一种用AppleⅡ微机同时采集和处理四台721型分光光度计测试数的装置
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  simultaneous
It was confirmed that this method was rapid, simple, highly sensitive, stable, and had the property of simultaneous determination of PCn and other thiol-containing compounds.
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These features were exploited to improve analytical performances in simultaneous determination of the minor ingredient of pseudoephedrine hydrochloride and the major ingredient of ibuprofen in a pharmaceutical preparation.
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(2) Simultaneous in-situ polymerization of monomers and self-assembly of the polymers.
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A rapid and reliable high performance liquid chromatographic (HPLC) method for the simultaneous determination of heterocyclic compounds, namely nicotinic acid, nicotinamide, and 3-cyanopyridine, in industrial effluent is described.
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In combination with the reliability measure for constraints function, the reliable data constraints of the images were decomposed with multi-level simultaneous wavelet transform rather than the traditional coarse-to-fine approach.
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         In this paper a new method has been proposed for computing the potential functions of internal rotations.Applying this method,we have calculated the potential functions of several important molecules,such as 1,2-dichloroethane, 1,1,2-trichloroethane,1,1,2,2-tetrachloroethane,n-butane,2-methyl butane,2,3- dimethyl butane,etc.All the calculated results agree with the experimental data. According to our theory,the potential functions of the three types of molecules CX_2Y-CX_2Y,CXY_2-CXY_2 and CX_2Y-CXY_2 are i...
            本文对分子内旋转问题作了以下的贡献:首先在理论上,提供了一种分子内旋转势函数的新的计算方法。这种新方法不仅理论上来得谨严,避免了以往旧方法中的一些缺点,而且比较简单,应用范围也因此比较广泛。其次,应用这种方法到一些具体问题,得到了下列结果:1.严格的得到了 Pitzer 方程,并估计了它的准确程度。2.证明了 CX_2Y-CX_2Y、CY_2X-CY_2X 和 CX_2Y-CXY_2内旋转势函数间的连系性,设第一种分子的势函数为V_1(φ)=A_1+B cosφ+C cos 2φ+D_1 cos 3φ第二和第三两种分子的势函数分别为V_2(φ)=A_2+B cosφ+C cos 2φ+D_2 cos 3φ和V_3(φ)=A_3-B cosφ-C cos 2φ+D_3 cos 3φ具体讨论了两类很重要的相关的分子:一类是 CH_2Cl—CH_2Cl、CHCl_2—CHCl_2和CHCl_2—CH_2Cl,另一类是 CH_2(CH_3)—CH_2(CH_3)、CH(CH_3)_2—CH(CH_3)_2和CH_2(CH_3)—CH(CH_3)_2。理论上得到的结果和实验全都符合。3.批判了以往一些人建议的乙醇的内旋...
文摘来源
         A new approximation method is proposed in this article for the discussion of molecular structures,and this new method includes the two well-known theories,molecular orbital theory and electron-pair bond theory as two special cases.Let a molecule have n bonds and let the ith bond be described by the anti-symmetrical two-electron bond function ψ_i(v_(2i-1),v_(2i)).(If there exist one- electron,three-electron or many-electron bonds,they can be similarly described by the corresponding one-electron,three-electro...
            本文在分子结构理论方面,作了下列两点贡献:首先建议了用双电子或多电子键函数作为近似基础,来计算分子的近似能量和近似电子云分布。这样计算得来的结果,一定会比用分子轨道理论或电子配对理论好,因为它更真实的反映了分子的化学性质,同时它也包括了后两者,而以它们为特例。我们得到了分子结合能的表示式,用表示式证明了分子结合能由两部分组成:一部分是键的结合能,另一部分是键与键间的作用能。其次是建议了一种新方法,把在计算化学键相互间的作用能中遇到的一些三中心和四中心积分,还原为容易计算的二中心积分。这方法比以往所用的好,因为它计算比较简单,同时限制性也小。
文摘来源
         A modified method bassd on the Terent'ev method of "active hydrogen" determination has been developed, by means of which both "active hydrogen" and CH3MgI addition can be determined.In this paper the procedure of the method was described in detail and a few examples of determination were given.In comparison with Kohler's method, though this method appears to be less satisfactory in accuracy, it has the advantage that the apparatus is simpler to construct and the determination easier and more rapid to be car...
            作者根据测定活泼氢的方法,在仪器及操作程序上加以改进,使这个方法能够同时用来测定CH_3MgI试剂的加成。本文详细地描述了这一改进方法并且给出几个测定的结果。与Kohler方法相较,这个方法虽然准确度稍差一些,但所用玻璃仪器易於吹制,操作程序也比较简便。
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