a B vitamin essential for the normal function of the nervous system and the gastrointestinal tract

the recent development of nicotinic acid in china is reviewed and the study in future is prospected.

重点阐述了国内烟酸的发展，并对今后的研究提出了展望和建议。

nicotinic acid and lithium hydroxide monohydrate were chosen as the reactants, anhydrous lithium nicotinate was synthesized by the method of hydrothermal synthesis.

选择分析纯烟酸和一水氢氧化锂为反应物，利用水热合成方法合成了无水烟酸锂。

the current technology for microbial hydroxylation of nicotinic acid is a procedure of resting cells transformation.

现有微生物羟基化烟酸采用的是静息细胞转化工艺。

the healthcare functions of nicotinic acid are introduced. the current status of its production and marketing at home and abroad is reviewed, and its prospects in china discussed.

介绍了果醋的保健功能，综述了国内外果醋生产及市场现状，对国内果醋行业及果醋市场进行了预测。

these compounds were prepared using nicotinic acid as primal raw material, and improve upon the process of reaction to enhance the yield.

以烟酸为最初原料合成上述化合物，对反应过程进行了改进，产率均有所提高。

objective to observe the therapeutic effect of nicotinic acid tablets in acne vulgaris.

目的：观察烟酸对寻常型痤疮的治疗效果。

the manufacture process of nicotinic acid based on ammonia oxidation method, which is introduced in this article, reached 99% conversion of 3-methyl pyridine.

本文介绍的基于氨氧化法生产烟酸的工艺，选择了适当的复合催化剂，使原料3-甲基吡啶转化率可达99％，技术水平达到国外先进水平。

nicotinic acid ethyl ester are applied widely in synthesis of medicines andinsecticides.

烟酸乙酯类化合物在医药合成中得到了广泛的应用。

nicotinic acid sustained release tablet was prepared and its releasing features in vitro were evaluated.

制备烟酸缓释片剂，并评价其体外释放特性。

addition of vitamin b6 is also involved in conversion of tryptophan to nicotinic acid and 5 - ht response.

此外维生素b6还参与色氨酸将烟酸转化为5—羟色胺的反应。

nicotinic acid has exact curative effect but show great adverse effects, so it should be made into sustained-release dosage form and co-administered with other drags to lighten them.

烟酸疗效确切但副作用大，宜制成缓释制剂并联合用药，以降低毒副作用。

the possibility of the inositol nicotinate formation from inositol and nicotinic acid catalyzed by immobilized lipase in organic solvent was explored in this paper.

探讨了有机相中固定化脂肪酶催化肌醇和烟酸合成肌醇烟酸酯的可能性；

this paper introduces several methods of nicotinic acid synthesis and their application to medicine and fodder additive.

介绍了烟酸合成的几种方法及其在医学及饲料添加剂方面的应用。

for the moment, i can't give you any clear answer that this is worth doing because we have to wait for the next two or three years until these nicotinic acid trials are finished.

目前关于它的价值我不能给出任何确切的答案，必须再过两三年时间，到烟酸类药物的试验结束后才能明确。

to seek a nicotinic derivative with effect, safety and less adverse effect, nicotinyl salicylic acid was synthesized from nicotinic acid with salicylic acid by employing the acyl chloride method.

为寻找降血脂作用强、不良反应轻、安全有效的烟酸衍生物，以烟酸和水杨酸为原料，采用酰氯法经过二步合成了烟酸的衍生物烟酰水杨酸。

the big advance in this science came after the discovery in 1939 of the importance in human-diet of nicotinic acid .

在1939年发现了烟酸在人类饮食中的重要性后，这一科学领域有了巨大发展。

adding nicotinic acid had no effect on milk protein and milk fat percentage.

添加烟酸不影响乳蛋白含量和乳脂率。