查询词典 synthesis method

In this dissertation, several novel halogen-free fire-retardant epoxy-based copper clad laminates were developed. Two kinds of phosphrous-containing epoxy resins were synthesized by different method. A novel nitrogen-containing curing agent 2,4, 6-tri (phenol-methylene -amide)-trizone was synthesized for preparing high-performance epoxy polymers, and the synthesis kinetics, cure kinetics and mechanism of MFP cured with DGEBA have been investigated by Differential Scanning Calorimeter and in situ Infrared.

本论文以开发新型无卤阻燃环氧树脂基覆铜板为目标，合成了两类结构不同的含磷环氧树脂以及一种新型的含氮固化剂2，4，6-三-均三嗪，考察了它们合成过程中的影响因素，用DSC和原位红外光谱法探讨了MFP固化环氧树脂的固化反应机理。

Mesoporous zincum sulfide is synthesized by gentle wet chemosynthesis method, with DDA as templates and Zinc acetate and TAA as precursors. The effect to the synthesis of the ratio of reactive components, the volume of pH, reactive time and reactive temperature has been dicussed systematically, and structures of the as-synthesized samples have been characterized by X-ray diffraction, N2 adsorption-desorption, scanning electron microscopy, Fourier transform-infrared spectra, UV-vis diffuse reflectance spectroscopy, transmission electron microscopy.

以十二胺为模板，醋酸锌及硫代乙酰胺为前驱体，温和湿化学法合成了硫化锌无序介孔结构，系统研究了反应物配比、pH值、反应温度、反应时间对材料合成的影响，运用X射线衍射、N2吸附-脱附、扫描电镜、红外光谱、紫外-可见吸收光谱、透射电镜等分析手段对介孔材料的结构进行了详细的表征。

Simultaneously we prepared benzimidazolines with two methods by the of reduction benzimidazolium salts with NaBH_4 and Grignard addition with benzimidazolium salts. Thus we provided a new biomimic synthetic method for 13 kind of tetrahydroisoquinoline starting from carboxylic aicd and halid, gave a new idea of the synthesis for new drugs.It can make many kind ofβ-carboline alkaloids which have bioactivity to antibacterium, antivirus and antitumor to start from 1,2,3,4-tetrahydro -β-carboline.

本文以1，3-二甲基苯并咪唑碘盐和2-取代的1，3-二甲基苯并咪唑碘盐为原料，采用了NaBH_4还原和Grignard试剂加成两种方法，制备了13种1，3-二甲基苯并咪唑烷和2-取代的1，3-二甲基苯并咪唑烷作为四氢叶酸辅酶一碳单元转移新模型，在酸性条件下，以2-(3，4-二甲氧基苯基)乙胺作为接收一碳转移的亲核试剂，完成了13种重要的四氢异喹啉类化合物的新合成方法研究。

Two dimension mathematical model of the tube reactor for dimethyl ether synthesis from methanol was established The temperature and concentration profiles in axial and radial direction for this tube reactor with change of operating condition were obtained with finite difference method,so as to provide design data for developing largescale plant of synthesizing dimethyl ether from methano

通过对甲醇气相脱水制二甲醚反应特点的研究，提出了使用拟等温管式反应器的概念；并用二维数学模型进行了数学模拟；在该模型上进行了操作条件对催化床温度分布影响的模拟研究，从而提出了该反应器的结构尺寸，为甲醇气相脱水制二甲醚的大型化开发提供了设计依据。

METHOD:Synthesis of paracetomol by hydrogenating and acetylating the p-nitrogenation at different conditions.

以对硝基酚和醋酐为原料，Pd-C或Pt-C作催化剂，加氢制备扑热息痛，优选反应条件。

A one-step method for the synthesis of aromatic indolizine derivatives byintramolecular 1,5-dipolar cyclization reaction of 2-(2-arylethenyl)pyridinium N-ylidesin the presence of an oxidant has been studied for the first time. In the presence ofelectron-deficient olefins, however, 2-(2-phenylethenyl)pyridinium N-ylides underwent1,3-dipolar cycloadditions and then aromatized in situ by TPCD to produce indolizinederivatives, indicating 1,3-dipolar cycloaddition proceed more readily than 1 ,5-dipolarcyclization in these conditions. Pyridinium disubstituted N-ylides, readily obtainedfrom corresponding pridinium and β-chlorovinyl ketone, underwent thermalintramolecular 1,5-dipolar cyclization to give indolizine derivatives easily.Indolizinecarbaldehyde derivatives were synthesized starting from 2-pyridinecarbaldehyde in four-steps involving 1,3-dipolar cycloaddition reaction.

本文首次研究了2-(2-芳基乙烯基)吡啶N-叶立德在氧化剂存在下的分子内1，5-偶极环化反应，采用一锅法合成了中氮茚衍生物；研究了这些N-叶立德的1，5-偶极环化和1，3-偶极环加成反应的选择性，发现当有缺电子烯烃存在时，优先进行1，3-偶极环加成反应，而不再发生分子内1，5-偶极环化反应；由β-氯乙烯酮方便地得到了烯丙基N-叶立德，他们在加热时进行分子内1，5-偶极环化反应而得到中氮茚衍生物；由2-吡啶甲醛为起始原料，通过1，3-偶极环加成反应等四步反应，得到了重要的中氮茚甲醛衍生物，这些反应都具有条件温和和操作简便的特点，是合成中氮茚衍生物的新方法。

Understand that your client will be commingling their energy with your synthesis alter if you are treating another with this method.

要明白，如果你以这种方法给别人疗愈的话，你的顾客将会把他们的能量与你合成圣坛的能量相混合。

In the aspect of synthesis, the first method, copolymerizes cationic polyacrylamide by aqueous solution copolymerization copolymerization.

在合成方面，方法一，用水溶液共聚法合成了阳离子聚丙烯酰胺。

In this thesis, the method of the synthesis of the common intermediate compoundof this style has been further studied. It is confirmed a procedure for esterifying the alanine.

本论文对该类化合物的常用中间体(1)的合成方法进行了改进性试验，避免了使用苄酯或叔丁基酯进行丙氨酸酯化，减少了反应的复杂性，简化了后处理方法。

In this paper, a structural methodology for bottom-up synthesis of Petri Nets for IC Flexible Manufacturing Systems is presented for the first time. With the help of a guarantying policy of liveness, a live, bounded and reversible final model can be obtained by merging different submodels through what is called autonomy subnet sharing among them. To demonstrate the application of the method, a flexible manufacturing system of integrated circuits is modeled and analyzed using the proposed theory.

本文首次提出了一种面向集成电路柔性制造系统的基于共享&自治子网&融合和活性保证策略的&至底向上&的Petri网结构化建模方法，在理论上证明了该方法保证所得模型的活性、有界性和可逆性，并且利用该方法与着色Petri网结合，对一个集成电路柔性制造系统进行了全面的建模和分析。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失