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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。

Fatty acids, more importantly, the positional isomers, were identified by applying equivalent chain length values based on even-chain saturated fatty acid methyl ester standards.

以线性程序升温等当碳长度值结合标准品对照的方法对17种脂肪酸定性,用面积归一化法定量。

The research consists of three parts: First is to prepare the five high-purity synthetic evaporite minerals powders, including gypsum, calcite, chalcanthite, nitratine and hydromagnesite, and to verify their phases and purities by XRD. Second is to conduct a series of thermal decomposition experiments of the powders by TGA at various heating rates and isothermal condition.

实验设计上可分为三部分,首先准备符合石膏、方解石、胆矾、钠硝石与水菱镁矿等五种矿物成分之试药等级粉体,再以XRD确认其矿物相是否正确;第二部分以热重分析仪进行等升温与等温条件热分解实验;最后以三种动力学方法分析拟合热重分析所得到的反应数据。

The chemic kinetics analysis shows that temperature increasing rate is the crucial factor which leads to the debinding defects.

化学动力学分析结果表明升温速率是胚体在脱脂过程中产生开裂等缺陷的决定性因素。

However you look at drinking coffee, you'll have to do something with it after warming up coffee grounds.

可是你看,喝咖啡,你将不得不做一些与它后,升温咖啡的理由。

The amount of each compound in the products has been quantitatively analyzed by capillary gas chromatography with programmed temperature. The error of the method was less than 3%.

采用程序升温毛细管色谱法对其进行了定量分析,定量结果的相对标准偏差均小于3.0%。

The bond market continued to heat up, the bond market to attract more investors.

债券市场继续升温,债券市场,以吸引更多的投资者。

A high lake level maintained during this period due to a southward migration of westerlies and a less evaporation;(6) the last deglaciation from about 15~10kaBP.

在57-32kaBP阶段的早期和晚期中甸纳帕海出现气温升高,且晚期比早期升温强烈,中间阶段气温下降,完全可以与古里雅冰芯记录对比。

Three preliminary conclusions could be approached as follows:(1) SST changes were distinctively characteristic of stepwise fluctuations. A warming trend during the last deglaciation was punctuated by a slightly cooling event which corresponded to the Younger Dryas. The Holocene episode could be divided into three phases of warming, continuously high temperature and cooling.(2) Two remarkable cooling records were documented around 4 kaBP and 1.5 kaBP after the megathermal of the Holocene.(3) Comparison between time series of MD05-2904 diatom R SST index and stalagmite δ^18O results from Dongge Cave, Guizhou Province suggested that changes in the East Asian Monsoon climate is synchronous with variations in the SST in the northern SCS since the last deglaciation and they might have a close correlation with each other

结果表明:(1)南海北部15 kaBP以来表层海水温度呈现明显的阶段性波动特点,即末次冰消期气候转暖过程中,12.9~11.5 kaBP前后温度略有下降,与新仙女木事件对应,全新世南海北部气候依次经历了升温期、高温期和降温期3个变化阶段;(2)全新世大暖期鼎盛期结束后,南海北部海水温度阶段下降,两次明显降温分别发生于4 kaBP前后和1.5 kaBP前后;(3) MD05-2904孔硅藻R值时间序列曲线与董哥洞D4石笋δ^18O曲线对比表明,南海北部表层海水温度变化与末次冰消期以来东亚季风强度变化关系较为密切。

Editor learned from the market, Edifier R301T speakers recently installed in North America version of sales continues to heat up, the current North American version of the new R301T ......

编辑从市场中得知,漫步者的R301T北美版音箱近期装机销量持续升温,目前新R301T北美版

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Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在,'歼灭战perfuming自己与胡努特,那麼,他来到和SAT 。

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