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化学合成

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In the daily chemical industry, sodium citrate is a good chemical agent that may replace trimerous polyamide sodium phosphate which produces public pollution, widely used for formatting various kinds of no pollution detergent.

在日化工业上,柠檬酸钠是替代产生公害的三聚磷酸钠的好的化学试剂,广泛用于合成各种无公害的洗涤剂。

A new colorimetric chemosensor 1 based on a tripodal benzaldehydic-phenylhydrazone selectively sensing acetate ion has been synthesized.

本文合成了一个新的基于三脚架苯甲醛苯腙的能够选择地检测醋酸根离子的比色化学传感器1。

This paper has studied preparation of Grignard reagents under phonochemistry and optimum technologic conditions is: the power of ultrasonic is 500W and frequency is 250KHZ, having twelve energy conversion devices, water bath temperature being 20C, solvent being THF,unstirred.

本文探讨了超声波合成格利雅试剂的机理,研究了声化学法制备格利雅试剂氯化苄基镁的最佳工艺条件为:在超声波的功率为500W,频率为25KHZ,有12个换能器的条件下,水浴温度为20℃,以THF为溶剂,不搅拌。

General meanings, feather and behavior of surfactant, Chemical structure, characteristic and synthesis of anionic, cationic, non-ionic and zwitterionic surfactants, Extraordinary properties and their correlative effecting factors.

阳离子、非离子和两性离子表面活性剂的化学结构、特点和合成方法;同时对表面活性剂的性质及相关因素作一大致的阐述。

PANSA nanoparticles were synthesized by oxidative copolymerization of aniline and 2-methoxyaniline-5-sulfonic acid in 1.0 mol/L HCl aqueous solution with ammonium peroxydisulfate as oxid...

PANSA纳米颗粒通过化学氧化聚合法,在无乳化剂或稳定剂存在下,以过硫酸铵为氧化剂,在1.0m ol/L盐酸水溶液中由苯胺与2-甲氧基苯胺-5-磺酸合成得到。

Dr Venter described his achievement as the creation of life "totally derived from a synthetic chromosome, made with four bottles of chemicals on a chemical synthesiser".

凡特把他这项成就形容为创造生命,&完全得自于一个合成染色体,用了4瓶化学品,在一个化学合成器上制成的&。

In the view of green chemistry and sustainable development, a series of new easily biodegrading amino acid-based anionic surfactants were prepared by reaction renewable resources as starting materials with amino acids.

本文从绿色化学和可持续发展的角度出发,以天然可再生资源为原料,与氨基酸反应合成一系列新型易生物降解的氨基酸型阴离子表面活性剂。

The pilotplant owes one 5,000 litre ferment tank, copulated seed tin, correlative distilled cell facilities and chemic medication composing cell.

中试车间拥有一台5000升发酵罐、配套种子罐及相关提取单元设备及化学药物合成单元设备为放大生产提供成熟工艺条件。

Therefore, the author excogitates some synthesis courses of new compounds including selenium and aspirin based on medicament chemistry and coalition principle. The new compound is named 5-5'-diselenium monoacetyl salicylic acid and ascertained by IR ,UV and MALDI-TOF-MS, and its structure is: OOHThe compound is inhibiting to sarcoma and ascites tumour of white mice by pharmacology experiments, so it is worth researching deeply.

为此,本文运用化学拼合原理,提出了几种既含硒又含乙酰水杨酸的化合物新结构的合成路线,经过多次理论分析和探索试验,得到一种预测的新的化合物,命名为5-5′-二硒单乙酰水杨酸,经红外、紫外、飞行时间质谱测定,证明该化合物的结构为:经药理预试验表明,该化合物对小鼠S_(180)肉瘤和艾氏腹水型肿瘤均有抑制作用,具有深入研究的意义。

Based on green chemistry,the cleaner production of HPMA(hydrolyzed polymaleic anhydride) has been studied.

以绿色化学为基础,研究了水解聚马来酸酐的绿色合成工艺。

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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

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。