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Taking 4-bromobenzaldehyde, acetic, benzaldehyde and ammonium acetate as major raw material, the 4, 5-bis(4-bromophenyl)-2-phenyl-1H-imidazole was synthesized by means of catalysis, oxidation and Debus cycloaddition reaction.
以对溴苯甲醛为原料通过催化,氧化生成1,2-二(4'-溴苯基)乙二酮,再以其与苯甲醛、醋酸胺和醋酸通过德布斯法合成2-苯基-4,5-二(4'-溴基苯基)咪唑。
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Utilizing 6 and several kinds of diazides prepared in our lab, polys containing 1,2,3-triazolyl and perfluorocyclobutane units were synthesized by "Click chemistry". Utilizing the polycondensation reaction between 6 and several commercially available aromatic diphenol or copolymerization reaction after adding another active aromatic dichloride, fluorinated polys containing phenylphosphine oxide units were synthesized. Utilizing the polycondensation reaction between 6 and several commercially available aromatic dianhydride, fluorinated polys containing PPO units were synthesized.Secondly, structure characterization of fluorinated polys.
利用化合物6同各种自制的二叠氮化合物,通过&Click chemistry&,合成了具有1,2,3-三唑环结构单元的全氟环丁基类聚芳醚;利用化合物22同各种商业化的芳香二元酚类化合物进行缩聚反应或者再加入另外一种活性芳香二氯代物进行三元共聚反应,制备了具有苯基氧膦结构单元的含氟聚芳醚;通过化合物25同各种商业化的芳香二元酸酐类化合物进行缩聚反应,得到了具有PPO结构单元的含氟聚醚酰亚胺。
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On a mirror surface, after performing coloring process in the stainless coloring solution containing CrO3 and H2SO4, drawbench or matt stainless steel board/foil as thick as 0.01 to 3 mm images the deadee by printing or photosensitivity, so a middle protection film is formed on the stainless steel surface; then by processing stripping, the archaized deadee is formed on the stainless steel.
本发明涉及一种不锈钢仿古遗像制作方法,在厚度0.01~3mm的镜面、拉丝或哑光不锈钢板/箔,通过在含CrO 3 和H 2 SO 4 的不锈钢着色溶液中着色处理,把遗像通过印刷或感光成像,在不锈钢表面上形成遗像中间保护膜;再进行去膜处理,在不锈钢上形成仿古遗像。
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Current research focused mostly on the development and restoration by regeneration of cartilage of limb joints and epiphyseal growth cartilage, but it is still incipient to study the development and the mechanism of physiological rebuilding and restoration by regeneration of condylar cartilage.
机体其它组织损伤是通过瘢痕而愈合,而骨和软骨则通过自身组织的再生来完成改建和损伤的修复,此功能主要是由于胚胎时期骨架的发生与出生后骨架生理性改建及损伤修复的分子机制相似的结果。
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Different from the conventional catalyst immobilization methods, the self-supporting strategy utilizes homochiral metal-organic coordination polymers generated by self-assembly of chiral multitopic ligands with metal ions without using any support.
与传统的负载模式不同,手性自负载催化剂通过含双或多官能团的手性配体与金属通过自组装形成一类有机-无机聚合物,因此无需使用任何载体,即能够有效地实现手性催化剂的回收和再利用。
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In the first part , Through the analysis of international mechanism and national foreign behavior relation , prove that the international mechanism and sovereign state are interdynamic relations that constructs each other; In the second part , Through reviewing the development courses of China and international mechanism relation, interdepend characteristic of the time , reshaping the diplomatic idea so as to prove that it is rational for China choosing to participating strategy to come to mould again; In the third part ,The real example that distinct China participates in and incorporates the international system behaves after analysing the participation strategic idea , effect of China, and reason has been analysed have participated in the predicament of the international mechanism.
第一部分通过国际机制与国家对外行为关系的分析,说明国际机制与主权国家是互动互构的关系;第二部分通过回顾中国与国际机制关系的发展历程、相互依赖的时代特征、中国外交理念的再塑造来论证中国选择参与战略的合理性;第三部分在分析了中国的参与战略的构想、成效之后明晰中国参与与融入国际体系的实证表现,并理性分析了参与国际机制的困境。
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The recombinant protein was purified by Ni-NTA affinity chromatography and gel filtration chromatography. The inbred C57BL/6 strains and outbred KM strains of mice were subcutaneously immunized with the protein formulated by either adjuvant ISA720 or aluminium hydroxide.
表达产物通过Ni-NTA亲和层析和凝胶过滤层析方法纯化,再分别与ISA720和Al3佐剂乳化后,免疫C57BL/6和昆明小鼠,通过尾蚴膜反应和ELISA反应检测特异性抗体。
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In accordance with the invention, the hG-CSF protein can be prepared with high purity through rather simple process facilitating secretion of large amount of hG-CSF fusion protein into the periplasm, which does not require complicated processes such as solubilization and subsequent refolding required for isolation of the hG-CSF protein produced in cytoplasm as insoluble inclusion bodies by conventional techniques, thus, the hG-CSF protein can be widely used as an active ingredient in the development of supplementary agents for anticancer therapy.
根据本发明,通过促进大量hG-CSF融合蛋白分泌到周质中的相当简单的方法可以高纯度制备hG-CSF蛋白,所述方法不需要复杂的加工过程例如对于通过常规技术分离胞质中产生的作为不溶性包函体的hG-CSF所需的溶解和随后再折叠,因此,在开发用于抗癌治疗的补充药物的过程中可用hG-CSF蛋白广泛地作为活性成分。
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The famciclovir was synthesized from purine by a series of steps by Acylation, Decarboxylation, Reduction ,and so on; Derivatives of these intermediates is described from the 6-chloro- 9H- purin-2-amine as raw materials in different conditions when the iodine and bromide were synthesized with the addition of two intermediate 6-bromo-9H-purin-2-amine and 6-iodo-9H-purin-2-amine; There is elaborated from the main part of a acetophenone, urineaminohydrochloride, phenylhydrazine, ethyl acetoacetate as raw material through a series of reactions to synthetic 3-phenyl-4-formylphenyl pyrazole and 5-chloro-3-methyl-1-phenyl-1H-pyrazole-4-aldehyde two pyrazole aldehyde, and then with 2-amino-6-chlorine-9-(2-methicillin-oxo-co-methyl-4-yl) purine reaction of the two new pyrazole purine Schiff bases.
本论文主是采用以鸟嘌呤为原料,经过一系列的酰基化,脱羧,还原等反应作用下最终得到了产物2-氨基-9-(4-乙酰氧基-3-乙酰氧基甲基丁基)嘌呤;其中的中间体衍生物主要是阐述从以2-氨基-6-氯鸟嘌呤为原料通过在不同的条件下进行溴代与碘代分别合成了另外两种中间体2-氨基-6-溴鸟嘌呤及2-氨基-6-碘鸟嘌呤;还有一部分主要是阐述从以苯乙酮,盐酸氨基脲,苯肼,乙酰乙酸乙酯为原料通过一系列的反应先合成3-苯基-4-醛基吡唑及5-氯-3-甲基-1-苯基-1H-吡唑-4-甲醛这两个吡唑醛,然后再与2-氨基-6-氯-9-(2-甲氧羰基丁酸甲酯-4-基)嘌呤反应得到了两个新型的吡唑嘌呤席夫碱
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Reparation of PBO was begun with the polymerization process in which composite salts that contained 4,6-diaminoresorcinol and terephthalic acid were dissolved in polyphosphoric acid and phosphorus pentoxide.
BO纤维制备:以4,6-二氨基间苯二酚的盐酸盐为单体原料,与对苯二甲酸混合,经过中和反应、脱色处理、干燥后制成复合盐;再以多聚磷酸为溶剂,添加五氧化二磷和抗氧化剂,经过预聚合反应制备出PBO聚合物;聚合物通过双螺杆挤出机进一步进行聚合,然后通过喷丝板挤出,在磷酸水溶液中凝固成型,经过洗涤、干燥等过程,最终卷绕成型。
- 推荐网络例句
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We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.
索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称;三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起,称之为挽歌体诗人或者史诗诗人,他们被称为诗人,似乎只是因为遵守格律写作,而非他们作品的模仿本质。
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The relationship between communicative competence and grammar teaching should be that of the ends and the means.
交际能力和语法的关系应该是目标与途径的关系。
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This is not paper type of business,it's people business,with such huge money involved.
这不是纸上谈兵式的交易,这是人与人的业务,而且涉及金额巨大。