琥珀酸

The mitochondrial respiratory Complex II or succinate:ubiquinone oxidoreductase is an integral membrane protein complex in both the tricarboxylic acid cycle and aerobic respiration. Complex II comprises of two hydrophilic proteins, flavoprotein and iron-sulfur protein, and two trans-membrane proteins, the molecular weight was 125KDa, as well as prosthetic groups required for electron transfer.

线粒体呼吸链复合物II即琥珀酸泛醌氧化还原酶是一个跨膜蛋白复合物，复合物II由两个亲水蛋白和两个穿膜蛋白构成，总的分子量大约在125kD左右，这里面包含了从琥珀酸到泛醌传递电子所需的电子传递体。

The hemisuccination process and kinetics ofβ-sitosterol and stigmasterol with succinic anhydride were studied, respectively.

为植物甾醇琥珀酸酯化反应过程和植物甾醇琥珀酸酯化产物的分离与精制过程的工业化提供理论指导和技术参数。

In high selectivity enrichment culturing process and rapid screening procedure, the succinic acid producers with starchness and saccharide were isolated from bovine rumen.

本研究通过采用选择性较强的富集培养和快速准确筛选程序，从牛瘤胃中分离出适于淀粉质原料的琥珀酸产生菌，并进行相关的生理生化鉴定：通过紫外照射诱变育种得到琥珀酸高产突变株，优化培养基组成并确定最适发酵培养条件。

The hemisuccination process and kinetics ofβ-sitosterol and stigmasterol with succinic anhydride The reaction product ofβ-sitosterol and stigmasterol with succinic anhydride were characterized by elemental analysis,~1H NMR and ~(13)C NMR.

应用高效液相色谱对混合植物甾醇琥珀酸酯化产物中各组分的含量进行了分析测定。实验结果表明，各种植物甾醇琥珀酸单酯的分离效果较好，响应时间在10min左右，面积归一法能够快速准确地用于该过程的分析测试。

In the polymerization, viscosity of PESA increased with the increase of the mass of Ca2 and the reaction temperatures; but it was not sensitive to pH value in the polymerization.

环氧琥珀酸的聚合反应中加入的引发剂Ca2的质量和反应温度对于聚环氧琥珀酸的粘度影响很大，随着Ca2的质量增加或是反应温度的提高，它的粘度始终保持着增长的趋势。

The scale inhibition mechanism of PESA was proposed on the basis of characterization of transformation of calcium carbonate crystal by means of X-ray Diffraction and scanning electron microscopy. The effect of temperature on corrosion inhibition efficiency of PESA was investigated and the Bockris substitution model is proposed to study the thermodynamics of inhibiting process of PESA. The calculation results show the adsorption of PESA on carbon steel is a spontaneous exothermic process with the increase of entropy.

通过X射线衍射和扫描电镜分析手段研究了聚环氧琥珀酸加入前后碳酸钙垢晶型的变化，在此基础上探讨了聚环氧琥珀酸的阻垢机理；考察了温度对聚环氧琥珀酸缓蚀性能的影响，根据Bockris置换模型，计算出中性水质中聚环氧琥珀酸在碳钢表面吸附的热力学函数，计算结果表明：聚环氧琥珀酸在碳钢表面的吸附是一个放热、熵增、自动发生的过程。

The molecular structure was clarified by IR, which revealed the existence of ether bonds. The content of tartaric acid and unreacted maleic acid were detected by spectrophotometer. The effect of some factors on the yield of ESA and scale inhibition efficiency of PESA was investigated.

利用红外光谱表征了该产物结构，表明分子链中含有醚键；利用紫外－可见分光光度法测得体系内副产物酒石酸和未反应的马来酸的含量，并系统地研究了各因素对中间产物环氧琥珀酸钠的产率和最终产物聚环氧琥珀酸钠阻垢性能的影响。

Synergistic corrosion inhibition effect of polyepoxysuccinic acidand zinc ion on carbon steel was studied with hanging slice dynamic test;and the synergistic corrosion inhibition effect of PESA and benzotriazoleon copper was also studied.

用旋转挂片法研究了聚环氧琥珀酸与锌盐复配对碳钢缓蚀作用的协同效应；同时研究了聚环氧琥珀酸与苯并三氮唑的复配对黄铜的缓蚀协同效应。

The potential of succinic acid as an important chemical intermediates had been realized and fermentation is one of the best ways to make it possible in economical aspect.

琥珀酸作为一种重要的化学中间体的潜力已经为人们所认识，而发酵法生产琥珀酸是使这一潜力变为经济上可行的最好方法之一。

The hydrophobic core serves as a reservoir for water-insoluble drugs.Hence,these nanoparticles can be used as carriers for hydrophobic drugs.For the synthesis of cholesterol-modified glycol chitosan conjugates,a carboxyl group was initially introduced to cholesterol molecule using succinic anhydride,and then covalently coupled with the primary amino group of glycol chitosan in the presence of 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide hydrochloride and N-hydroxyl succinimide.

本文采用二步反应将胆固醇接枝到乙二醇壳聚糖，首先将胆固醇进行羧基化，将胆固醇与琥珀酸酐反应生成胆固醇半琥珀酸酯，然后用1-乙基-3-(3-二甲基氨丙基)碳二亚胺盐酸盐与N-羟基琥珀酰亚胺作为偶联剂，将胆固醇半琥珀酸酯的羧基与乙二醇壳聚糖主链的氨基进行反应，得到胆固醇疏水改性乙二醇壳聚糖共聚物。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。