• 此外,还实现了由邻位卤代的芳香醛到9-菲酚衍生物和9,10-菲醌衍生物的“一锅法”合成。

    Moreover, 'one-pot' methods to prepare the derivatives of 9-phenanthrol and 9,10-phenanthrenequinone from the ortho-halogenated aromatic aldehydes were also developed.

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  • 新的17-卤代的19-去甲甾醇类,制备方法和中间体,它们作为药物以及含有它们的药物组合物。

    Novel 17-halogenated 19-Nor steroids, method and intermediates for preparing same, use as medicines and pharmaceutical compositions containing same.

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  • 介绍吡啶衍生物的分类,并详细总结了烷基吡啶和卤代吡啶的应用及其合成路线。

    The classification of pyridine derivatives was introduced, application and synthetic route of alkyl pyridine and halogenated pyridine were also elucidated in detail.

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  • 对74种卤代乙烷的计算结果表明,沸点计算值与实验值的一致性令人满意,平均误差1.10 %。

    The results showed that the calculated boiling points were in good agreement with the experimental data, and the mean relative deviation was 1.10%for 74 halogenated ethanes.

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  • 建立顶空-毛细管气相色谱快速分析饮用水中多种挥发性卤代烃的方法。

    Volatile halogenated hydrocarbons in drinking water were determined by headspace gas chromatography.

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  • 二恶烷经常会在河水、特别是地下水中被检测到,这主要是由于挥发性的卤代碳氢化合物造成的污染。

    Dioxane has been frequently detected in river water, especially in ground water polluted by volatile halogenated hydrocarbons.

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  • 并应用该方法预测了一些卤代乙烷的沸点,供有关研究者参考和实践的进一步检验。

    The boiling points of 9 halogenated ethanes were predicted for reference and test in the future.

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  • 利用建立的模型,对另外7种卤代苯的沸点和闪点进行了预测。

    With the established model, the boiling point and flashing point of the other 7 halogenated benzenes were predicted.

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  • 北极地区大气中活性卤素物种主要来自海洋大型藻类释放的卤代烃分解和海盐的贡献。

    The source of RHS mainly comes from the photochemical degradation of volatile halogenated organic compounds (VHOC) emission from marine macroalgae and inorganic halogen species from sea salts.

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  • 目的研究一种新型卤代磷酸酯的合成工艺、性能及阻燃效能。

    Aim To study the synthetic procedure, properties and flame retardant efficiency of a novel halogenated phosphate.

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  • 用DSC技术研究了丙烯腈共聚物的热行为以查明含卤代羧酸共聚单体对PAN热稳定化过程的影响。

    The thermal stability of AN copolymers was studied by DSC technique in order to get information on the influence of comonomers containing halogenated carboxylic acid on the stabilization of PAN.

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  • 我国现有的估算卤代温室气体排放量的方法(传统的“自下而上”方法),还不足以对其减排进程和效果进行实时评估。

    The emissions of halogenated greenhouse gas can be assessed via the "bottom-up" method, but this method is not good enough to real-time evaluate the reduction processes and effects.

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  • 卤代有机污染物的降解是水污染控制的一项重要课题。

    The degradation of halogenated organic pollutants is an important subject of water pollution.

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  • 测定结果表明卤代烃类,苯类在水中的吹脱速率最快,酮类和酯类次之,醇类最不易吹脱。

    The results show that the rates of mass transfer of halogenated hydrocarbons and aromatics are faster than those of ketones and esters, and those of alcohols are the slowest.

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  • 卤代核苷酸如嘧啶类似物溴脱氧尿苷(BrdU)对活细胞和组织中的DNA进行标记是有用的。

    Halogenated nucleotides such as the pyrimidine analog bromodeoxyuridine (BrdU) are useful for labeling nascent DNA in living cells and tissues.

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  • 卤代核苷酸如嘧啶类似物溴脱氧尿苷(BrdU)对于新生活细胞和组织中的DNA进行标记是有用的。

    Halogenated nucleotides such as the pyrimidine analog bromodeoxyuridine (BrdU) are useful for labeling nascent DNA in living cells and tissues.

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  • 文中对尿嘧啶及其5位卤代衍生物的常规和表面增强拉曼光谱进行了观察和比较。

    Normal Raman and surface-enhanced Raman Scattering Spectroscopy of uracil and 5-halide uracils have been obtained and compared.

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  • 卤代物添加剂可以大大提高辐射变色薄膜的响应灵敏度;

    The sensitivity of the response is remarkably improved when halides are added into the radiochromic system.

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  • 简述了以卤代盐制碱是必然的发展趋势,讨论了有关技术问题。

    The inexorable trend of alkali production by bittern replaced salt was briefly introduced, and technological problems were discussed.

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  • 卤代烃是一类重要的有机化合物,在化学工业、农业、材料、环保及现代有机合成中有着广泛的应用。

    Halohydrocarbon is one of the most important organic compounds and widely used in chemical industry, agriculture, material, environmental protection and modern organic synthesis.

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  • 对烷基化壳聚糖进行X射线光电子能谱分析表明,随着卤代烷试剂反应活性的增高,发生在壳聚糖羟基上的烷基取代反应增多。

    X-ray photoelectron spectroscopy (XPS) indicated that the higher reaction activity of alkyl halide, the more alkyl substitution degree on hydroxyl group of chitosan.

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  • 结果表明:单一卤代酚的生物毒性随着卤素原子数目在化合物中的增多呈增强趋势;

    The results indicated that the single toxicity of the six halophenols enhanced with the increasing of the halogenoid atoms;

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  • 摘要卤代芳烃的氰化反应在液晶单体合成中广泛应用,但传统的加热方法反应时间长、温度高。

    Cyanation of aryl halides is widely used in the synthesis of liquid crystals but its traditional heating reactions require long time and high temperature.

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  • 卤代芳烃的氰化反应在液晶单体合成中广泛应用,但传统的加热方法反应时间长、温度高。

    Cyanation of aryl halides is widely used in the synthesis of liquid crystals, but its traditional heating reactions require long time and high temperature.

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  • 结果表明,经氯化汞活化的金属钐对酮类化合物与烯丙基或苄基卤代物的反应很有效,可高产率地生成叔醇。

    Samarium metal (activated by HgCl2) is an effective reagent for allylation or benzylation of ketones. The corresponding tertiary alcs. are obtained in satisfactory yields.

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  • 从相转移催化剂的种类、原理、反应条件以及它在卤代芳香族化合物氟化反应中的应用等方面对相转移催化剂的作用进行概括和总结。

    The application of phase transfer catalysis in fluorination of halo-aromatic compounds, mechanism, variety and reaction condition of fluorination are reviewed in this article.

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  • 本文简述了干粉灭火技术是可信赖的灭火技术,干粉灭火系统是卤代烷灭火系统的一种良好替代系统;

    In this paper, the writer briefly described that powder extinguishing technique is a dependable extinguishing technique, and that powder system is a good substitution for Halon systems;

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  • 本文简述了干粉灭火技术是可信赖的灭火技术,干粉灭火系统是卤代烷灭火系统的一种良好替代系统;

    In this paper, the writer briefly described that powder extinguishing technique is a dependable extinguishing technique, and that powder system is a good substitution for Halon systems;

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