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In this study, we carried out the allylation of anilines with allylic acetates in PEG-H2O system in the presence of palladium as catalyst. N-allylation of anilines was achieved.

在本研究中,我们完成利用钯催化剂,在水及聚乙二醇系统中,使苯胺类和乙酸烯丙酯类进行烯丙基化反应,并探讨各苯胺类反应物之结果。

The reaction of polyfluoroalkyl iodides with 4-pentenoic acids initiated by sodium dithionite was realized to give polyfluoroalkyl substituted lactones.

我们研究了多氟烷基碘代烷与4-戊烯酸类化合物等在连二亚硫酸钠引发下的反应,得到了氟烷基取代的内酯化合物,我们将该反应称为氟烷基化内酯化反应;并建立了一个利用该反应合成含氟内酯的新方法,首次利用氟烷基化内酯化反应进行高立体选择性双环含氟内酯及手性含氟内酯等的合成,已合成含氟内酯新化合物50余种。

According to the classifing method of Geldart,ultrafine powders belong to group C particles.It is difficult to fluidize because of such cohesiveness.However,it was discovered recently that some powders can be fluidized smoothly through forming larger agglomerates at high gas velocity,and the fluidization quality of some powders can be improved by external force.

按Geldart的分类法,超细粉属难流化的C类颗粒,但近年来的研究表明,某些超细粉在高气速下可以形成较大的聚团,而以聚团形式实现平稳流化;对在高气速下难以流化的超细粉,人们通过引入外力场等方法来改善其团聚特性,提高流化质量。

ESEM showed on one highly mineralized construct that partial displacement of oneosteoclast exposed specialized structures of the cellular membrane facing the bonesurface, namely, the ruffled border and podosomes of the sealing zone, as well as theresorption pit under the ruffled border, unequivocally indicating that osteoclast-likecells formed have the ability to resorb bone-like matrix produced by osteoblasts invitro.

细胞在大矿化结节周围分布的差异反映了在大小类似的情况下,结节矿化程度越高,对周围的TRAP阳性细胞的趋化能力越强。F-actin荧光染色显示了在大矿化节结上F-actin环的出现,这是破骨细胞具有吸收活性的特征标志,直接证明了所形成的类破骨细胞具有骨吸收活性。

In part one, the reactions of some active fluorine-containing compounds such as 2, 2-dihydropolyfluoroalkanoic acids and ethyl 2-hydropolyfluoroalkenoates were studied and various fluorine-containing heterocyclic compounds were synthesized. Using 2, 2-dihydropolyfluoroalkanoic acids as the starting material, 4-fluoroalkyl quinolin-2-ols, 2- [ -1-hydropolyfluoro-1-alkenyl] -4H-3, 1-benzoxazin-4-ones, 1-aryl -4, 9-dihydro-3-fluoro-alkyl-1H-pyrazo [3, 4-b] quinolin-4-ones, 5-fluoroalkyl-12H-quin olino [2, 1-b] quinazolin-12-ones, 4-fluoroalkyl-1, 3-dihydro-1, 5-benzodiazepin-2-ones and 4-fluoroalkyl-2H-pyrido [1, 2-a] pyrimidin-2-ones were synthesized through its condensation reaction with anilines, anthranilic acid, N'-aryl-o-aminobenzamides, o-nitro aniline, o-amino pyridine and their derivatives and the subsequent transformations. 5-Fluoroalkyl isoxazolidines, 3-fluoro-3-fluoroalkylisoxazolidino [4, 3-c] quinolin-4-ones, 3-fluoroalkylisoxazolino [4, 3-c] quinolin-4-ones and 2-aryl-3per fluoroacylindoles were synthesized by inter-and intramolecular 1, 3-dipolar cycloaddition of fluorine-containing olefins and nitrones.

第二部分,我们研究了α,α-二氟苄基卤类化合物的亚磺化脱卤反应、产物的转化及全氟烷基亚磺酸盐与芳环化合物的全氟烷基化反应,发现全氟苄基碘或溴及α,α一二氟苄基溴在保险粉等亚磺化脱卤试剂引发下可生成相应的亚磺酸盐;全氟苄基亚磺酸盐与氯气或溴反应可生成全氟苄基磺酰氯或磺酰溴;在烯烃存在下,全氟苄基碘则与烯烃发生加成反应,生成相应的1:1加成产物;在三价醋酸锰的作用下,部分芳香化合物如茴香醚,二甲氧基苯,吡啶,喹啉等可以和过量的全氟烷基亚磺酸盐发生双全氟烷基化反应,反应表现出一定的区域选择性,产率良好。

The effects of solvent on the bromization reaction and oxidant on the formolation reaction of the target product were studied. The results show that the optimum solvent for the bromization reaction and the optimum oxidant for the formolation reaction of the target product were carbon tetrachloride and ceric ammonium nitrate, and their yields were 86.7% and 89.3% respectively.

同时就溴化反应中的溶剂以及甲酰化反应中的氧化剂对两类反应的影响分别进行了研究,结果表明溴化反应的最佳溶剂为四氯化碳,反应产率达到86.7%,甲酰化反应的最佳氧化剂为硝酸铈铵,产率达到89.3%。

Characteristics of Inclusions: After the tea is kept for a long period of time in a stall and deep fermentation processing begins, the specialties of material and manufacturing make many bioreactions occur for thorough activation of microbes to excrete extra-cellular enzymes, which impacts over 500 stuffs of tea. Theses microbes contain catechin, polyphenols, amylase, cellulose, protein, lipid ,alcohol, ketone, vitamin, microorganism, and organic acid, making them transform, isomerize and degrade, polymerize and couple, so as to produce amylase, thearubigins, theaflavins, cellulose, and microelements that other commercial teas could not produce or produce too little.

三、 内含物的特点:由于原料、制造的特别性,经长期陈化和深发酵的过程,茶叶内含物发生多种生物生化反应,充分激活微生物分泌胞外酶,作用于茶叶中的内含儿茶素、多酚、多糖、纤维素、植物素、蛋白质、脂类、醇类、酮类、维生素、微量元素、有机酸等500多种物质,使之转化、异构降解聚合耦联,生成其他商品茶无法比拟和缺乏的多糖、茶红素、茶黄素、纤维素、微量元素等,并形成以菇稀醇类为主体香气。

Now the company owns 5 production lines ( width 2 m, 2.5m and 3 m) and 6 different type carpet back rubberizing coating compound production lines imported from Europe ( such as single-side effervescence back rubberizing, full-immersion rubberizing, powder-spraying compound, PVC plastification heavy coating ).

公司拥有5条欧洲引进的针刺地毯生产线(幅宽2米、2.5米、3米)和6条不同类型的地毯背胶涂层复合生产线(有单面发泡背胶类、全浸渍上胶类、洒粉复合类、PVC塑化重涂层类)。

Then start the main process of this research-taking out the two categories of universalized jargon, in which we draw the whole track of universalizing of jargons, concluded the main characteristics of the two categories of universalized jargons, generalized the preconditions of nationalizing and assimilation and found the main three causes of this phenomenon, thus the whole scene of the universalizing process of jargons is displayed.

在此基础上,对两类通用化行业词进行分析,总结出其各自通用化的方式、途径、过程、条件,最后得出了行业词语通用化的条件和原因,从而对行业词语通用化的各个方面均有了量化而完整的了解。

The millimetersized tubular crystal selenium was first prepared. By studying the process of treating selenium in ethylenediamine, we proposed the mechanism of the preparation of selenides under solvothermal condition. The selenides came into being from the reaction of metal ions with Se〓, which was obtained by the amine attacking selenium. Moreover, a new precursor to prepare nanocrystalline selenides at room temperature was obtained. From this precursor, we have prepared nanocrystalline silver selenides, copper selenides, lead selenides and cadmium selenides nanorods.

首次报道了采用溶剂热处理的方法制备出厘米尺度的管状结构硒晶体;通过对硒粉在乙二胺中的溶剂热研究,初步探讨了以单质硒为硒源的溶剂热合成硒化物的反应机理应是硒受胺类的亲核进攻变成Se〓而进一步形成相应的硒化物;获得了合成硒化物纳米晶的前驱物,并在室温条件下合成了硒化银、硒化铜、硒化铅纳米晶和硒化镉纳米棒等。

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What would he tell Judith and the children?

他将怎样告诉朱迪丝和孩子们呢?

I this is at that time, the opinion with peacockish true girl is full of in a heart.

这就是当时的我,一个心中布满虚荣的女孩子真实的想法。

Oh, and I bought myself a new laptop," he said."

哦,我还给我自己买了一个新笔记本"他说。"