coenzyme q 0 was prepared via two steps using commercially available 3,4,5-trimethoxy benzaldehyde as the starting material. the overall yield has reached 43.8%.

the conversion of 1,3-propanediol is carried out by two enzymatic steps. glycerol dehydratase is a key enzyme in this process, which requires the presence of coenzyme b12 to carry out catalysis effectively.

1,3-丙二醇的生物合成途径主要包括两步反应，其中甘油脱水酶是此反应中的关键酶，它需要在辅酶B12存在的情况下进行有效的催化。

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a novel strong acidic ion-exchange fiber was firstly prepared by the friedel-crafts crosslinking and sulfonation of commercial pps fibers, and the novel fibrous material had high exchange capacity and good chemical stability performance.

本文首次通过对聚苯硫醚（PPS）纤维主链苯环的Friedel-Crafts烷基化交联与磺化两步反应制得一种交换容量高、化学稳定性能好的强酸离子交换纤维新材料。

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the main topic of this paper is about the innovative two-step reactive extrusion method. it can avoid the confrontation between the additives, when the waste polymer materials ( mostly recycled hdpe bottle cap materials) are reused.

本课题主要针对废弃高分子材料（主要是回收HDPE瓶盖料）再利用时遇到的问题，创新性的采用两步反应挤出法，避免了传统一步反应挤出法中添加剂之间的对抗作用。

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preparation of 10-hydroxy camptothecin ( hpt) by camptothecin ( cpt) through oxidation and photoactivation was studied.

文中采用半合成法对10羟基喜树碱的制备进行了研究，以喜树碱为原料，通过氧化和光化两步反应得到HPT初产品。

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the ac impedance spectra showed that the electro-deoxidation reaction of silicon dioxide is a two-step reaction and corresponding to the two reduction current peaks in the cyclic voltammetry curve.

交流阻抗谱表明，SiO2电脱氧为单质硅的反应是两步反应，与循环伏安曲线上的两个还原电流峰相符合。

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it was shown that the adsorption processes of hsa and lysozyme could be described by a kinetic equation involving two consecutive reactions.

结果表明，HSA和溶菌酶的吸附过程可以用包含两步反应的动力学方程来描述。

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a study on direct synthesis of acetic acid from cbm and co_2 by two-step reaction sequence in the way of "short contact" and in the presence of water

短接触和水蒸气存在下的煤层CH4和CO2两步反应直接合成乙酸的研究

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a flame-retardant nitrogen-containing curing agent was synthesized by melamine, formaldehyde and phenol through two reactions.

以三聚氰胺、甲醛和苯酚为原料经两步反应，制得了一种环氧树脂的含氮固化剂（三聚氰胺改性酚醛，MPF）。

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then in the same way, we prepared the sulfonic mesoporous molecular sieve in two steps.

随后用同样方式，通过两步反应，合成磺酸型MCM-41介孔分子筛。

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hiv-1 integrase ( in) integrates viral dna into host cells through two steps metal ions-dependent reactions.

HIV-1整合酶（IN）通过依赖金属离子的两步反应将病毒DNA整合入宿主细胞中。

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methods the target compound was synthesized by two steps with 4-hydroxy-6-methyl-2-pyrone and n, n-dimethylformamide dimethyl acetal as the starting materials.

方法以4羟基6甲基2吡喃酮、N，N二甲基甲酰胺二甲氧基缩醛为起始原料，经两步反应制得目标化合物。

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study on ch_4-co_2 two-step reaction and co_2 hydrogenation by a short contact way

短接触CH4-CO2两步反应和CO2加氢研究

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diagnostic significance of plasma prolidase activity in chronic liver diseases

血浆脯氨酸肽酶活性测定在慢性肝病诊断中的意义

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a modified method for superoxide dismutase activity measurement. dai

超氧化物歧化酶活性测定的一种改进法

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research of serum γ-glutamyltranspeptidase in laryngeal cancer diagnosis and prognosis

喉癌患者血清γ－谷氨酰转肽酶活性测定

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detection and analysis of serum prolidase activity in viral hepatitis

病毒性肝炎患者血清脯氨酸肽酶活性测定及其意义分析

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studies on testing conditions of-d-glucosidase activity in tea

茶叶中β-D-葡萄糖苷酶活性测定条件的研究

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measurement of serum biotinidase activity in hepatic disease and its significance

肝硬化患者血清生物素基酶活性测定及其临床意义

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research on chromogenic peptide in determination of prekallikrein/ kallikrein activity

发色多肽用于前激肽释放酶活性测定的研究

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determination of the serum catalase activity in patients with liver diseases

肝病患者的血清过氧化氢酶活性测定初探

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