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.
有机卤代物的光反应作为构建碳-碳键和碳-杂原子键的一种重要途径已经得到了广泛和深入的研究。
As an important approach of carbon-carbon bond formation and carbon-heteroatom bond formation, photochemistry of organic halides has been studied extensively.
研究了胆甾醇酯类和胆甾醇卤代物的电子轰击电离(EI)、场解吸电离(FD)、化学电离(CI)的质谱。
Mass spectra (MS) of cholesterol esters and halides were obtained by means of Electron Impact (EI), Field Desorption (FD) and Chemical Ionization (CI).
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.
加成物( 1 )与卤素反应后,与锡原子相连的苯基被取代,得到一卤代、二卤代和混合二卤代物(2—8) 。
The phenyl groups in compound 1 were substituted by ICl, Br 2 or I 2 to yield mono- and dihalide derivatives(2—8).
目前合成硒醚的方法尚有很多不足之处,我们在总结前人经验的基础上,用硒格氏试剂作反应物,直接与卤代物或烯烃反应制得一系列硒醚。
Based on the former research works, we used magnesium selenolate as reactant to react with RX or styrene to synthesize a series of selenide. Followings are the main research results:1.
这个反应生成一些二卤代化合物。
用氯醇法生产的环氧丙烷中所合杂质除有乙醛、丙醛外,还有烃类、环氧化物、卤代烷、丙酮、醇类等。
Chlorohydrin production of propylene oxide with the impurities except for acetaldehyde, propionaldehyde and hydrocarbon, epoxides, halogenated alkanes, acetone, alcohols, such as.
由二卤代烷与碱金属或碱土金属的多硫化物缩聚而成。
By two alkyl halide with alkali metal or alkaline earth metal polysulfides from condensation.
以醛酮为原料合成卤代乙烯类化合物。
这个反应生成一些二卤代化合物。
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.
细水雾具有良好的液滴分散性、高热容、易蒸发等特性,因此作为卤代烷烃灭火剂的替代物,细水雾灭火技术己得到了广泛的研究与应用。
Due to the fine dispersity, high heat capacity, and ease of evaporation, water mists have got widely used and concerned about as the substitute of the haloalkane extinguishing agent.
本文对某市几个自来水厂不同季节原水、出厂水和未梢水中腐殖酸、卤代烃及挥发性有机物的含量进行了测定。
The measurement of humic acid, trihalom- ethanes and nonvolatile organic compounds in raw water, chlorinating water and tip water of several waterworks were carry out in two dis- tinct seasons.
使用最多的卤代化合物是氯(次氯酸钠的形式)碘。
The most widely used halogenated compounds are chlorine (in the form of sodium hypochlorite) and iodine.
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.
在所有检出的有机物中,有机氯农药类、卤代烃类检出率最高,分别达到60%、57.8%。
Among all the organisms, the organochlorine pesticide category and halohydrocarbon category get the highest detection rate as 60% and 57.8% respectively.
二卤代丙烯化合物,含有之作为活性成分的杀虫剂,以及其生产中间体。
Dihalopropene compounds, insecticides containing them as active ingredients, and intermediates for their production.
介绍了含氟芳香族化合物的几种合成方法,叙述了卤交换氟代中的几个关键技术。
Several synthetic methods to synthesize fluorine - containing aroma tic compounds are introduced, and some key techniques in halo exchange and fluor o substitution are put forward.
经过筛选确定苯系物、多环芳烃、有机氯农药、多氯联苯和挥发性卤代烃为主要污染物。
The main pollutants are benzene serial materials, polycyclic aromatic hydrocarbon, organochlorine insecticide, PCB and volatile halogenated hydrocarbon.
但是,1974年科学家发现,卤代烷化合物是造成臭氧空洞形成的重要原因。
But in 1974 scientists found that the halogen-alkyl compound is the main factor of those can lead to the Ozone cavity.
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.
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.
该模型可用于解释卤代芳烃化合物还原脱卤的机理。
The model can be used to explain the dehalogenation mechanism.
本文综述了由卤代芳硝基物还原制备卤代芳胺的三种方法,并对几种还原方法的优缺点进行了对比和讨论,得出水合肼还原具有很好的应用前景。
This article reviews three kinds of methods for manufacture halogenated aromatic amine, and the strong and weak points of the three reduction methods are pointed out.
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.
所述组合物含有溶剂和由一种卤代 硅烷化合物或者其两种或更多种的组合通过共氨解作用得到的聚 硅氮烷化合物。
The composition contains a solvent and a polysilazane compound obtained by co-ammonolysis of one or a combination of two or more halosilane compounds.
根据脂肪烃、多卤联苯、卤代苯和稠环芳烃等80种非极性有机化合物在鱼体中生物富集因子(BCF)的实测数据,建立了有机物在鱼体中生物富集因子的片段常数法估算模型。
Relationship between bioconcentration factor and fragment constants was investigated. A prediction model was developed on the basis of the observed BCF values of 80 non-polar organic compounds.
根据脂肪烃、多卤联苯、卤代苯和稠环芳烃等80种非极性有机化合物在鱼体中生物富集因子(BCF)的实测数据,建立了有机物在鱼体中生物富集因子的片段常数法估算模型。
Relationship between bioconcentration factor and fragment constants was investigated. A prediction model was developed on the basis of the observed BCF values of 80 non-polar organic compounds.
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