查询词典 synthesis method

The research aimed to synthesize amide by using a simple synthesis method.

［目的］采用简单的合成方法来合成酰胺。

Part two, Three analogue compounds of actamiprid were synthesized by analogue synthesis method through the intermediates which have insecticide activity.

第二部分中，选取本身具有杀虫活性的基团取代吡虫清中的2-氯-5-氯甲基吡啶，采用"类同合成法"合成了3个烟碱类杀虫剂吡虫清的类似物。

Organization: Institute of Chemical Engineering and Environment, Qingdao UniversityAbstract: A new Schiff base and its cupric complex of L-lysine and anisaldehyde were synthesized by stepwise synthesis method in anhydrous system, with basic essential amino acid L-lysine and natural product anisaldehyde as precursor.

摘 要：以碱性必需氨基酸L-赖氨酸和天然产物茴香醛为前体物，采用分步合成法在无水体系中制备了L-赖氨酸缩茴香醛单席夫碱及其铜配合物。

On the basis of an analysis of several steps in synthesizing manganese iso-octoate ,a kind of paint siccative,the one-step direct synthesis method is put forward,in which barium hydroxide is used to replace sodium hydroxide,and all the materials are at once added in the same reaction process.

对漆料催干剂异辛酸锰的多步合成条件进行了分析研究，提出了用既是沉淀剂又是皂化剂的氢氧化钡代替氢氧化钠，同时投料，同时反应，一步直接合成目标产品的合成路线。

In this paper, we realized a new synthesis method which synthesized nickel boride and boron nitride.

而且经过溶剂热合成与高温煅烧两步法，成功地制备了金红石型二氧化钛(TiO_2)纳米棒，这是一种新的合成纳米TiO_2的方法。

At firstly, We try to producing calcium hydroxide particles in the polyacralamidewater solution, using in situ synthesis method.

首先，本文利用原位合成技术，在聚丙烯酰胺水溶液中合成了氢氧化钙颗粒。

The new structure compounds (4, 54, 56) possessing vasodilatation were found. These compounds may be as lead compounds of developing antihypertension drugs. The synthesis method of peptidemimetics containing β-tetrahydro -carbolic acid was established for the first time.

在对上述化合物NO清除能力评价实验中，发现了一类具有舒血管活性新化合物（化合物4，54，56），这一类具有舒血管活性化合物的发现可以为研制高血压治疗药物提供先导化合物。

The synthesis method comprises the following steps: adding 2-( 5-(dimethylamino methyl- 2- furyl methyl sulpho ethylamine and 1- methylthio- 1- methylamino- 2- nitro ethylene with a molar ratio of 1.04: 1 into water, heating to 48- 52 Deg. C, reacting 4.5 hours with a vacuum degree of 0.02- 0.05 MPa, cooling, adding sodium-hydroxide of concentration of 10% to regulate the PH value to 11.0- 11.4, filtrating and cooling the filtrate to 0- 2 Deg. C, crystallizing for 12 hours, centrifugally filtrating, and rinsing filter cake with purity water to prepare wet ranitidine alkali; dissolving ranitidine alkali in alcohol and reacting with chlorhydric acid to prepare ranitidine hydrochloride.

合成方法包括：将摩尔比为1.04∶1的2-(5-(二甲氨基甲基-2-呋喃基甲基硫代乙胺与1-甲硫基-1-甲胺基-2-硝基乙烯加入水中，升温至48-52℃，于真空度0.02～0.05MPa反应4.5小时，反应完毕降温，用10％氢氧化钠溶液调pH＝11.0-11.4，抽滤，滤液降温至0～2℃，结晶12小时，离心甩滤，用纯化水漂洗滤饼，得雷尼替丁碱湿品；将雷尼替丁碱溶于乙醇中与盐酸反应，制备得到盐酸雷尼替丁，产品符合欧洲药典标准。

The project will develop a bandpass sigma-delta analog-to-digital converter for digital audio broadcasting system in three years. In the first year, we had finished the system simulation for IF receiver using conventional high speed ADC and bandpass sigma-delta ADC, respectively. We also had done the analysis and design of high-order bandpass sigma-delta modulator structure. In this year, we have developed a coefficient synthesis method for high order bandpass sigma-delta modulator using high order filter transfer functions (inverse Chebyshev bandreject filter function).

本计划将在三年内发展一个能应用在数位音讯广播系统的带通sigma-delta类比/数位转换器(analog-to-digital converter，ADC)，在第一年度中我们分别以传统高速类比/数位转换器及带通SD类比/数位转换器的接收系统为例，并结合编码正交多工器(Coded Orthogonal Frequency Division Multiplex，COFDM)的技术，建立一套DAB系统模拟的方法，同时并研究有关高阶带通SD类比/数位调变器的架构及电路，并已成功开发出一个由高阶滤波器合成的高阶带通调变器。

The invention relates to a synthesis method of wormlike mesoporous columbium oxide, pertaining to the technical field of inorganic porous materials.

本发明属于无机多孔材料技术领域，具体为一种蠕虫状介孔氧化铌的合成方法。

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