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A three-electrode system composed of TiO2/Ni as the working electrode, porous nickel as the counter electrode and saturated calomel electrode as the reference electrode was used for the photoelectrocatalytic degradation of sulfosalicylic acid under anodic bias potential.

建立了以刮浆工艺制得的TiO2/Ni为工作电极、泡沫镍为对电极、饱和甘汞电极为参比电极的光电催化反应体系,研究了在磺基水杨酸的光电催化降解过程中,外加电压和溶液PH值对降解速率的影响。

A method for determinating the activities of pectinase was proposed in this paper. It can produce the red-brown amino compounds when 3,5-dinitrosalicylic acid and aldehyde were heated together. The amino compounds had maximum absorbency at 540nm. In certain range, there was a good linear relationship between the amount of reducing sugar and the color of the reaction mixture.

针对QB1502-92标准测定方法测定高活力果胶酶、固定化果胶酶活力存在的实验误差大,重现性及灵敏度差的缺陷,提出了利用3,5-二硝基水杨酸与醛糖共热产生棕红色的氨基化合物,在一定范围内还原糖的量和含有呈色氨基化合物的反应液颜色深浅成正比的原理,在540nm下测其吸光度,从而计算出果胶酶活力的测定方法,并对测定步骤、影响因素及测定中可能出现的问题进行了试验研究。

Take a sulfosalicylic acid mole fraction as the abscissa, the extinction is the y-coordinate, makes the extinction constitutional diagram.

以磺基水杨酸摩尔分数为横坐标,吸光度为纵坐标,作出吸光度组成图。

Exhibits a rare structure of a meso-helix which is a 3D presentation of a lemniscate. 14 and 15 are isomorphic one-dimensional helical structures.

化合物 14 和 15 同构,它们都是由金属离子和3,5-二硝基水杨酸的羧基组成的一维螺旋链结构。

OH and superoxide free radical(O.- 2).MethodsThe methods of DPPH.,Salicylic Acid and pyrograllol auto-oxidation were used to assay the scavenging the extract from the leaf of L. rethenicum Murr. on the three free radicals.

方法采用DPPH法、水杨酸法、邻苯三酚自氧化法分别测定黑果枸杞叶片甲醇提取物清除DPPH自由基、羟自由基和超氧自由基的能力。

Aim To establish the method of detecting the Arylamine N-acetyltransferase-1(NAT1) genotype and its distribution of polymorphism,and analyze the correlation between the genotype and the phenotype in a Chinese Hans population.

目的探讨汉族人群中N-乙酰基转移酶1(NAT1)基因多态性的分布特点,以及基因型和表型之间的相关分析,以评价NAT1乙酰化代谢多态性对5氨-基水杨酸等药物疗效的影响。

The results indicated that the water or 50% ethanol extracts from peonies petals could reduce light absorption of DPPH and OH initiated hydroxylation of salicylate, and inhibit O2(superscript -) mediated light chemical reduction of nitroblue tetrazolium effectively, and lipid peroxidation of polyunsaturated fatty from yolk lipoprotein, in which DPPH scavenging activities of 6 peonies water extracts were hinger than that of 200 μg/mL BHT, but lower than 80 μg/mL Vc. In 4 kinds of detecting systems of antioxidation, the peroxidation activity of deep colored flowers of peonies was higher than that of light colored flowers of peonies.

牡丹花瓣提取液能明显抑制卵黄组织匀浆的脂质过氧化作用,降低DPPH的吸光值、抑制O2介导的NBT光化学还原及OH作用下的水杨酸羟基化作用,其中牡丹花瓣提取液清除DPPH自由基的活性高于200μg/mL BHT,但低于80μg/mL Vc.6个品种的牡丹花瓣提取液,在4种测定系统中均具有一定程度的抗氧化能力,且水提取液的抗氧化活性略高于体积分数50%乙醇提取液,深色花瓣提取液对不同自由基的清除能力较强。

Methods The methods of DPPH , pyrograllol auto-oxidation and salicylicl acid were used in order to get the scavenging quality of DPPH free radical , superoxide free radical O2-.

方法采用DPPH法、邻苯三酚自氧化法、水杨酸法,分别测定缬草醚酯提取物清除DPPH自由基、超氧阴离子自由基和羟自由基的能力。

Nanometer size titanium dioxides modified by salicylic acid and 5-sulfosalicylic acid (5-SA) were prepared by using surface-modification method.

利用化学吸附法合成了水杨酸和5-磺基-水杨酸表面修饰的TiO2纳米粒子。

A novel method for the synthesis of molecular probe of ubiquinone binding protein is described.

以 3 硝基水杨酸和正癸烷为原料,合成了研究线粒体呼吸链酶系中各泛醌结合蛋白的分子探针,即氚标记的 3 叠氮基 N 正癸烷基水杨酰胺,为进一步研究泛醌结合蛋白提供了有效工具。

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