查询词典 hydroxy-ketone

The environmental black direct dye stuff without carcinogensis was prepared by 4,4'-diamino-dibenzidine-2-sulfonicacid,1-hydroxy-7-aminonaphthalene-3,6-dusuifonicacid,m-benzoic-diamine and aniline.

以4，4'-二氨基-二苯胺-2-磺酸代替苯胺，与1-羟基-7-氨基-3，6-二萘磺酸、间苯二胺、苯胺等合成无致癌作用的环保型黑色直接染料。

The environmental black direct dyestuff without carcinogensis was prepared by 4,4＇- diamino - dibenzidine - 2 - sulfonicacid, 1 - hydroxy - 7 - aminonaphthalene - 3,6 - dusuifonicacid, m - benzoic - diamine and aniline.

以4，4'-二氨基-二苯胺-2-磺酸代替苯胺，与1-羟基-7-氨基-3，6-二萘磺酸、间苯二胺、苯胺等合成无致癌作用的环保型黑色直接染料。

7-Hydroxy-4-methylcoumarin was synthesized from ethyl acetoacetate and m-dihydroxybenzene by the Pechmann condensation using phenyl sulfonic acid as catalyst under solvent-free conditions.

摘 要：以苯磺酸作催化剂，乙酰乙酸乙酯和间苯二酚为原料，通过Pechmann缩合反应合成7-羟基-4-甲基香豆素。

Alpha hydroxy acids, commonly referred to as AHAs, are effective ingredients that are widely used in cosmetic formulations.

阿尔法羟基酸，通常称为ahas ，是有效成分被广泛采用在化妆品配方。

When 3-benzoyl-5-formyl-indolizine or ethyl 5-benzoyl-indolizine-3-carboxylatewere used as substrates, a novel coupling reaction occurred, givinghydroxy-cycl[3,2,2]azines. A mechanism of the reaction was proposed.

其中3-苯甲酰基-5-甲酰基中氮茚和5-苯甲酰基-3-中氮茚甲酸乙酯在低价钛试剂的作用下，发生了新奇的偶联反应，得到了用其它方法难以制备的Hydroxy-cycl[3，2，2]azine，并对此现象作了解释。

Hydroxy praline – The main sources of hydroxyl praline are carrots, lettuce, beetroots, turnips, cucumber, plums, cherries, figs, radishes, grapes, olives, pineapples, almonds and coconut.

羟基脯氨酸-的主要来源羟脯氨酸是胡萝卜，生菜， beetroots ，萝卜，黄瓜，李子，樱桃，无花果，萝卜，葡萄，橄榄，菠萝，杏仁和椰子。

Cyclic acylphosphoramidates (2-hydroxy-2-oxy-1,3,2-oxazaphospholidine-5-ones,CAPAs) are phosphate activated amino acids possessing both a carboxyl-phosphorylanhydride and a phosphoramidate bond in a ring.

氨基酸-磷酰胺内酸酐(Cyclic acylphosphoramidates，简称CAPAs)是一种集磷酸-羧酸混酐和磷酰胺两个官能团于一身的磷酸活化的氨基酸。

Cyclic acylphosphoramidates (2-hydroxy-2-oxy-1,3,2-oxazaphospholidine-5-ones,CAPAs) are phosphate activated amino acids possessing both a carboxyl-phosphorylanhydride and a phosphoramidate bond in a ring.

为了理解P-N键在生命起源化学和生物化学中的可能作用，本论文系统地研究了模型化合物N-磷酸化氨基酸(N-phosphono-amino acids，简称NPAAs)的化学性质。

In the second part, quantum chemical AM1 methods were employedto theoretically investigate the electronic structures of maleic anhydride in ground- and excited-states. On basis of the frontier orbital theoryand three bonding principles, the possibility of reaction of active α-hydroxysuccinic anhydride carbanion and active α-hydroxy-succinic anhydride radical on polymerization process of MArespectively by alkali catalyst and by hydroxyl radical was discussed. Theanionic and radical polymerization of MA discussed also. Theoreticalstudies show that both polymerization products of MA are in the chainstructures, corresponding to the experimental findings.

第二部分用量子化学AM1方法，计算研究了马来酸酐的基态和激发态电子结构；应用前线轨道理论和成键三原则分别探讨了碱催化条件下和羟基自由基引发下马来酸酐均聚合过程中α-羟基丁二酸酐碳阴离子和α-羟基丁二酸酐碳自由基活性中间体参与反应的可能性及由它们引发的马来酸酐阴离子聚合反应机理和自由基引发聚合反应机理；理论研究表明马来酸酐的均聚合产物均为链式结构，与实验事实相相符。

Frictional experiments using a self-designed "multifunction servo friction and abrasion experiment machine" with the multi-parameter synchronous data collection system and online data processing software have been made on six types of rocks. The analyses of the experiments results indicate that earthquake faults with large displacement bring up a series of products continually changing from cataclasis to melting. The rocks contained mafic minerals are easier to melt and the gas bubbles in melting products proved the hydroxy water from the minerals has participated the rock melting process and decreased the melting point of the rock. Frictional melting is more sensitive to speed than normal stress. The temperature sharply increases at about 40℃/sec when the sample enters the earthquake fault state. While the melting happens, torsion decreases instantly and there is perhaps a "blind region" of normal stress.

利用自行设计加工的&多功能伺服摩擦磨损实验机&，及多参数同步数据采集系统和联机数据处理软件，对六类岩石进行的实验和分析成果表明：大位移地震断层作用形成了与滑动速率有关的从碎裂到熔融连续变化的系列产物；含镁铁质矿物的岩石更容易熔融，熔融产物中出现的气泡证实了矿物羟基水很可能参与了岩石的熔融过程并降低岩石熔点；相对于正应力而言摩擦熔融程度对速度变化更加敏感；此外，进入地震断层状态时温度急剧上升达～40℃/秒；伴随熔融发生出现扭矩骤减时，可能存在一个短暂的正应力&盲区&。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。