二甲酸

Methods: To establish a rat model of pancreaticoduodenal transplantation with venacava endocrine drainage and enteric eccrine drainage. The recipient rats were introperitoneally injected with 15 mg/kg of proline dithiocarbamate in experiment group and with equal amount of normal saline in control group 30 minutes before transplantation.

建立大鼠腔静脉内分泌引流、肠道外分泌引流的动物模型，脯氨酸二硫代氨基甲酸酯组供体胰腺保存在ProDTC的UW液中，受体鼠于移植前30min腹腔注射ProDTC(15mg/kg)；对照组供体胰腺仅保存在UW液中，受体鼠腹腔注射等量生理盐水，分别于再灌注后第0、1、3、6、12、24h等时点，处死大鼠，取血后切取移植胰腺。

Compared to bis(1-phenylisoquinolyl-N,C2') iridium, the iridium complex containing the triarylamine-based picolinic acid displays increased MLCT transition and low oxidation potential and is expected to be a promising red phosphorescent material.

与传统的二(1-苯基异喹啉)(吡啶-2-甲酸)合铱配合物相比，设计的环金属铱配合物具有增强的MLCT电子跃迁吸收和低的氧化电位，是一种有发展潜力的红色磷光材料。

Propargyl alcohol was protected by dihydrophran with the catalysis of PPTS ,and then reacted with Ethyl Mag bromide to prepare its corresponding Grignard reagent.

炔丙醇在 PPTS 催化下由二氢吡喃保护，与溴乙烷格氏试剂反应生成相应的格氏试剂，然后与氯甲酸甲酯反应得到羟基丁炔酸甲酯四氢吡喃醚，在 PPTS 催化下脱保护后进行甲磺酰化，由溴化钠进行溴取代后合成了4-溴-2-丁炔酸甲酯，总收率达53%。

The application and production process of pyromellitic dianhydride are presented,and the recycle and application of the waste in manufacture was emphasized.

本文介绍了均苯四甲酸二酐的用途和生产过程，同时重点介绍了生产中废料的回收利用。

On the basis of these principles and requirements,in this paper,a new modifier has been synthesized from pyromellitic dianhydride and thiosemicarbazide by the nucleophilic addition of anhydride,the cyclization of acyl thiosemicarbazide in alkaline solution,and the N-hydroxymethylation of the triazole-thione.

本文根据这一思路，以均苯四甲酸二酐和氨基硫脲为起始原料，通过酸酐的亲核加成反应、酰氨基硫脲的碱性环化反应、三唑硫酮环的N-羟甲基化反应合成出了一种新的N-羟甲基三唑硫酮酸改性剂。

The dependence of the radiolabeling yield of ~99mTcO-NIET and 99mTcN-NIET on pH, temperature, ligand concentration, the amount of added stannous chloride, and so on was screened by the normal procedure.

合成了一种新的氨荒酸类化合物，2-（4-硝基咪唑）-乙基二硫代氨基甲酸钾，研究了影响99mTcO-NIET以及99mTcN-NIET标记率的相关因素。

This product alone curing slow, usually thiuram disulfide carbamate, aldehyde amines, guanidine type accelerator and used, is an excellent anti-G-CR scorch agents, plasticizers and delay agent .

本品单独使用硫化速度慢，通常和秋兰姆、二硫化氨基甲酸盐、醛胺类、胍类促进剂并用，是G型氯丁胶的优良抗焦烧剂、增塑剂和延迟剂。

The production technology of triethyl ortho - formate as medicine intermediate is reviewed.

综述了医药中间体原甲酸三乙酯的生产工艺，重点介绍了二步法、一步法、氢氰酸法、酯交换法和相转移催化法的合成原理与生产工艺，并对这几种生产工艺进行了评述。

Results showed that extraction abilities depends on the hydrophobic of solutes which pK〓 values are similar, e. g. acetic, propionic, butyric and valeric acids, while pK〓 values affect dominantly the extraction abilities of acids with similar hydrophobic, e. g. formic, acetic, chloroacetic, dichloroacetic, and trichloroacetic acids. Meanwhile, diluents and TOA concentration also affect the extraction equilibria of acids through the specific basicity of TOA .

TOA对酸性差别很小的一元羧酸如乙酸、丙酸、丁酸、戊酸的萃取能力主要取决于羧酸的疏水性参数logP；TOA对疏水性参数差别较小的羧酸如甲酸、乙酸、一氯乙酸、二氯乙酸、三氯乙酸的萃取能力主要取决于羧酸的电性参数；稀释剂的种类、TOA的浓度都会影响TOA的表观碱度pH〓，并通过TOA的表观碱度影响羧酸的萃取平衡。

The chlorin e6 7 and chiorin 11 were oxidized further with osmium oxide in the same oxidization condition to yield bateriochlorin 8 and 12, respectively.

卟吩醛2在碱性条件下转化为卟吩e6三甲酯7，2与烷基溴化镁的格氏反应给出脱镁叶绿酸醇9，选择高钌酸四丙基铵和N-甲基吗啉N-氧化物将3-位羟基氧化成羰基，所生成的卟吩二酮10在酸性条件下脱去甲酸甲酯生成焦脱镁叶绿酸衍生物11，用四氧化锇对7和11实施氧化，则分别转化为细菌卟吩衍生物8和12。

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。