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Also, the effects of the amount of tantalum pentachloride and reaction time on the softening point of the pitch were investigated. Results showed that the tantalum particles were dispersed homogeneously in the pitch precursor with sizes in the range of 20-50nm. The tantalum particles mainly existed in the form of δ-Ta2O5 when the reaction temperature was 420℃. By further heat treatment,δ-Ta2O5 was transformed into β-Ta2O5 at 900℃.Β-Ta2O5 and TaC co-existed at 1200℃. At 2800℃, all the tantalum was transformed into TaC.

结果表明:沥青中钽化合物的粒度为20nm~50nm,主要以五氧化二钽的形式均匀分散于沥青中;惰性气氛下,较低温度(420℃)热处理时,钽化合物以δ-Ta2O5的形式存在,温度升高到900℃时,δ-Ta2O5转化为β-Ta2O5,在温度达到1200℃时,β-Ta2O5和碳化钽共同存在于炭基体中,在2800℃温度下,钽完全转化为碳化钽。

Results Nine compounds from supercritical CO2 extraction were identified and the main constituents were pentadecane, ethyl pmethoxycinnamate and ethyl cinnamate. Twentyeight compounds from water distillation were identified and the main constituents were δ3carene, ethyl pmethoxycinnamate and ethyl cinnamate.

结果 沙姜超临界CO2萃取物中分离鉴定出9种化合物,主要成分为十五烷、肉桂酸乙酯、对甲氧基肉桂酸乙酯等;水蒸气蒸馏法中分离鉴定出28种化合物,主要成分为δ3蒈烯、肉桂酸乙酯和对甲氧基肉桂酸乙酯等。

Results Nine compounds from supercritical CO2 extraction were identified and the main constituents were pentadecane, ethyl p-methoxycinnamate and ethyl cinnamate. Twenty-eight compounds from water distillation were identified and the main constituents were δ-3-carene, ethyl p-methoxycinnamate and ethyl cinnamate.

结果 沙姜超临界CO2萃取物中分离鉴定出9种化合物,主要成分为十五烷、肉桂酸乙酯、对甲氧基肉桂酸乙酯等;水蒸气蒸馏法中分离鉴定出28种化合物,主要成分为δ-3-蒈烯、肉桂酸乙酯和对甲氧基肉桂酸乙酯等。

Mesoporous Ti02 is also synthesized with glycerol and pentaerythrite as temp-lates separately.It is characterized by TEM,XRD,BET and FTIR etc.

以多元醇类化合物结构相近的丙三醇,季戊四醇有机小分子化合物为模板剂制备出了中孔纳米二氧化钛粉体,对所得粉体进行了透射电镜,傅立叶红外,N2吸附一脱吸,粉末X一射线衍射等的测试。

The following conclusions have been gotten from a large amount of experiments and determinations: Triiodide, pentaiodide, heptaiodide, nonaiodide, undecaiodide of solid tetra-n-butyl ammonium polyiodides and tetrabutyl ammonium bromide polyiodides can be synthesized by solid phase process which is a economic easy way, while its not suitable for synthesizing solid tetramethyl ammonium polyiodides; Solution polyiodides of triiodide, pentaiodide can be synthesized through the complexation process, and TX-10 is a better complexing agent; Triiodide, pentaiodide, heptaiodide resinic polyiodides were synthesized by ion-exchange of resinifying process, and that is a viable easy way.

在大量实验和分析的基础上,可得到以下结论:用固相法可以合成出碘三、碘五、碘七、碘九和碘十一形式的正四丁基多碘化铵固体高聚碘和四丁基多碘化溴化铵固体高聚碘系列化合物,是制备高聚碘的经济、方便的合成方法,但此法对合成四甲基多碘化铵固体高聚碘系列化合物并不适用;TX-10是合成溶液高聚碘较佳的络合剂,通过其络合作用可以合成出碘三和碘五形式的溶液高聚碘;采用树脂法,通过离子交换,合成出了碘三、碘五和碘七形式的树脂高聚碘,此法简单可行。

The fact that the compound, 2-methyl-2-di- methylaminomethyl-5--n-pentylidenecyclo- pentanone hydrochloride (T60) possessed little anticancer activity indicated that the Mannich bases that could formed a methylene group were necessary for anticancer activity.

当环戊酮环上的Mannich碱侧链位置上引入取代基时,抗癌活性显著降低,如化合物2-甲基-2-二甲胺甲基-5--亚戊基环戊酮盐酸盐(T60)几乎无抗癌活性。这说明Mannich碱能形成亚甲基是这类化合物产生抗癌活性所必不可少的条件。

One of these compounds, 2-diethyl- aminoethyl-5--(4-methoxybenzylidene) cyclo- pentanone hydrochloride (T81) possessed sig- nificant antiinflammatory and analgesic ac- tivity when administered orally.

Ⅲ类化合物完全无抗癌活性,对其中一个化合物2-二乙胺乙基-5--(4-甲氧基苯亚甲基)环戊酮盐酸盐(T81)试验结果表明,它经口给药时具有显著的抗炎、镇痛活性。

Pyrrole and its derivatives are important pentatomic heterocyclic compounds. They are widely applied in medicine, pesticides, food, household chemicals, flatting putty, testile material, printing, paper making and so on.

吡咯及其衍生物是一种重要的含氮五元杂环化合物,广泛应用于医药农药食品、日用化工、涂料、纺织、印染、造纸等诸多领域,尤其是近年来在感光材料、高分子材料等高科技领域中的应用,更使吡咯类化合物的合成成为人们研究的热点。

Covering the chemistry of liquid-phase oxidation of organic compounds, this book includes the results of analysis with the parabolic model as applied to reactions of peroxyl radicals with C-H bond of different organic compounds.

在有机化学和生物学方面的氧化和抗氧化剂有機化学と生物学の面でのアンチオキダントと酸化します包括有机化合物的液相氧化的化学,这本书象适用于peroxyl 激进主义者与不同的有机化合物的C-H 契约的反应的那样用抛物线的模型包括分析的结果。

Four main parts were included in this dissertation:(1) Precise measurement of Gvalues of hydrogen peroxide in the reactions of flavonoids with superoxide anion andα-hydroxy ethyl peroxyl radicals;(2) Kinetic studies of the reactions of typicalflavonoids with α-hydroxy ethyl peroxyl radicals;(3) HPLC-MS analysis of theproducts after γ-irradiating rutin ethanol solution saturated with air, a reactionmechanism was proposed;(4) Preliminary investigation on the reaction between rutinand peroxynitrite.

本论文的内容主要包括四部分:(1)黄酮类化合物在与超氧阴离子自由基以及α-羟乙基过氧自由基反应的过程中生成的过氧化氢G值的准确测定;(2)几种典型的黄酮类化合物与α-羟乙基过氧自由基的反应动力学研究:(3)空气饱和芦丁乙醇溶液经γ-辐照后产物的HPLC-MS分析及反应机理推测;(4)对芦丁与过氧亚硝酸盐的反应做了初步的探索。

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I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里,举止就文雅一些,因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计,这件高贵的制服是香港本土制造,是我们第一套不配帽子的制服。

Do not 'inflate' your achievements and/or qualifications or skills .

不要 '夸大' 你的业绩或成果,条件或者技能。