查询词典 carboxylate

Dihydroxyacetone; formamidine acetate; imidazole-4,5-dicarboxylic acid; optimizing process; ethyl imidazole-4-carboxylate; reductive reaction; 4(5)-hydroxymethylimidazole

关键字或关键词组： 1，3-二羟基丙酮；醋酸甲脒；4，5-二羧酸咪唑；工艺优化；4(5)-羧酸咪唑乙酯；还原反应；4(5)-羟甲基咪唑

But the six-membered α-hydroxylactone of CPTs can hydrolyzed to its inactive carboxylate form readily at physiological pH.

但是，喜树碱的六元α—羟基内酯环在体内易水解，且存在毒性较大、具有种属差异等不足。

Considering the functions of metal-organic frameworks and the synthesis conditions, we designed and synthesized six metal-organic frameworks based on rare earths by choosing multidentate organic carboxylate ligand, H3CTC, and using mild solvent vapor conditions.

在丰富金属金属有机骨架材料合成化学和结构化学的同时，为该材料的定向合成和性质开发积累了有价值的实验事实。

Considering the functions of metal-organic frameworks and the synthesis conditions, we designed and synthesized six metal-organic frameworks based on rare earths by choosing multidentate organic carboxylate ligand, H3CTC, and using mild solvent vapor conditions.

在第二章中，我们利用半刚性的多齿有机羧酸配体——1，3，5-环己三酸与稀土金属元素合成了七个三维具有开放骨架结构的金属有机骨架晶体材料，由于稀土元素在光学和磁学方面的特殊性能，所获得的金属有机骨架材料不仅具有较好的吸附和储存性质，而且拥有金属中心赋予的独特的光学和磁学性能。

The in-situ epoxidation and in-situ grafting of unstaturated rubber,in-situ synthetic poly-unstaturated carboxylate,surface in-situ chemical treating of rubber filler,montmorillonite in-situ plugging plyer/peeling,in-situ preparing SiO2 by sol-gel technology were presented.The modification method and effect of rubber were addressed,and the practic application possibility of modificated rubber to rubber goods was researched.

介绍了不饱和橡胶的原位环氧化和原位接枝、原位合成聚不饱和羧酸盐、橡胶填充剂表面原位化学处理、蒙脱土原位插层/剥离、溶胶-凝胶法原位生成SiO2等原位反应合成技术在橡胶加工和改性方面的应用研究工作，讨论了各种改性橡胶方法的特点以及改性效果，并探讨了改性橡胶材料在各种橡胶制品行业实际应用的可能性。

After introduction of reaction mechanism of LHE water stabilizer containing polyhydroxy carboxylate in CW system and applications in other chemical plants,the author analyzes the feasibility introducing this kind of stabilizer into CW system in nitric acid plant of Sichuan Chemical Co.

介绍LHE聚合羟基羧酸盐水质稳定剂的作用机理以及在其他化工厂循环水系统中的应用实例，设想将LHE聚合羟基羧酸盐水质稳定剂用于我公司硝酸厂循环水系统，将表冷液治理后低浓度氨氮淡水作为循环水系统的补充水，达到氨氮零排放。

In this paper,the agglomeration of polymer butadiene latex being caused by a , B -unsaturated carboxylate latex is studied,the particle diameter of polymer butadiene latex was agglutinated from 170nm~180mn to300nm~330nm..

本文主要研究了用α，β-不饱和羧酸共聚胶乳作附聚剂对PB胶乳进行附聚反应，使聚丁二烯胶乳平均粒径由原来的170nm～180nm附聚到300nm～330nm。

The structures of the intercalates formed by reaction of four guests with Zn, Al-HTlc were characterized by XRD and IR techniques. And the charge density on the oxygens of each of the carboxylate groups for each of the four anions was investigated utilizing ab initio (HF/6-31G) method by G98w. The orientation of 1,2-,1,3-,1,4-benzenedicarboxylate or benzenecarboxylate anions between the layers was also proposed.

利用XRD和IR测试技术对样品结构进行表征，UV及HPLC对有机酸的反应量进行定量，并采用Gaussian-98软件包中ab initio分子轨道法(HF/6-31G)计算了各有机酸阴离子的分子结构，分析了其结构与插层行为的关系，并理论结合实验给出了各有机酸阴离子在锌铝类水滑石层间可能的空间构型。

85 And 119486/79. They are a novel type of antibiotic having both the wide antibacterial spectrum and high safety of penicillin and cephem antibiotics belonging to beta -lactam antibiotics, as well as the potent antibacterial activity and high beta -lactamase stability of carbapenem antibiotics.Sodium-(5R, 6S)-6-[-1-hydroxyethyl]-7-oxo-3- [-2-tetrahydrofuryl]-4-thia-1-azabicyclo [3.2.0] hept-2-ene-2-carboxylate 5/2 hydrate (faropenem sodium, hereinafter referred to as compound 1) is currently used as an oral drug for various infectious diseases and is reported to show potent antibacterial activity against not only methicillin-sensitive Staphylococcus aureus, Streptococcus pyrogenes and Streptococcus pneumoniae but also gram-positive bacteria for which conventional beta -lactam drugs have proved ineffective such as penicillin-resistant pneumococci, oral staphylococci and enterococci, also showing a wide antibacterial spectrum covering gram-negative bacteria such as Haemophilus influenzae and anaerobic bacteria such as the genus Bacteroides, which activity is due to its novel skeleton penem ring (Kagaku Ryoho no Ryoiki The Field of Chemotherapy, Vol.

他们是一种新型的抗生素都具有广泛的抗菌谱和高度的安全青霉素和cephem抗生素，属于β-内酰胺类抗生素，以及作为强大的抗菌活性和高β-内酰胺酶稳定的碳青霉烯类antibiotics.sodium -（ 5 R ， 6 S ）-6 -[ - 1 -羟乙基] - 7 -氧- 3 - [ - 2 - t etrahydrofuryl] - 4 -硫杂- 1 -氮杂双环[ 3 。2.0]庚- 2 -节能- 2 -羧酸5 / 2水合物（法罗培南钠，以下简称为化合物1 ）是目前用来作为口服药物，为各种传染病和报道，以显示强大的抗菌活性，不仅对甲氧敏感的金黄色葡萄球菌，链球菌pyrogenes和肺炎链球菌，但也克阳性菌为常规β-内酰胺类药物已证明无效，如青霉素耐药pneumococci ，口腔葡萄球菌和肠球菌，也显示出广泛的抗菌谱，包括革兰阴性菌如流感嗜血杆菌和厌氧菌如属杆菌，这活动是由于其新颖的骨架青霉烯环（（化学ryoho没有ryoiki领域的化疗），第13卷，第10号，第74-80 ， 1997年）。

Soap soap is a carboxylate compound with excellent wetting, dispersing and washing power for a textile dyeing soaping and washing equipment fast.

皂粒皂粒是羧酸盐复合化合物，具有优良的润湿、分散和净洗能力，适用于纺织品染色后的皂洗和生产设备的快速洗涤。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。