A semi-empirical LCAO-MO-AM 1 calculation is performed for some substituted pyridine N-oxide.

The typical K-F reagent has disadvantage of high poisonousness and pyridine malodor.

经典K-F试剂缺点是毒性大,且具有吡啶的恶臭.

Food additive -- Vitamin B 6 ( Pyridoxine hydrochloride )

GB14753 -1993 食品添加剂维生素B6 ( 盐酸吡哆醇 )

A method for the quantitative analysis of the pyridoxine hydrochloride and its preparation were established.

建立盐酸吡哆辛及其制剂的二阶导数差示脉冲极谱定量分析方法.

A crystalline amine, C 8 H 12 N 2 O 2, one of several active forms of pyridoxine, important in protein metabolism.

'吡'.''哆胺晶体胺, c8h12n2o2, ''.'吡'. ''哆醇的几种活跃的形式中的一种, 在蛋白质新旧代谢过程中起重要作用.

Objective : To explore the diagnosis and treatment of the ectopic parathyroid gland in the pyriform sinus.

目的: 探讨梨状窝异位甲状旁腺的诊断及治疗.

A failure mode of pyriform hole and the concepts of slip and spring back were forward.

提出了梨形孔的破坏模式和弹体在靶板上滑移、回弹的概念.

The substitution of a purine for a pyrimidine, or vice versa is a transversion.

嘌呤为嘧啶取代或嘧啶为嘌呤所取代,叫做颠换.

On the other hand , cyclobutane pyrimidine dimmer ( CPD ) just has an effect of cell cycle arrest.

而CPD光 产物 ( cyclobutanepyrimidinedimmer, CPD ) 仅仅造成细胞周期暂时或短期的停滞现象.

Hydrogen bonds play important roles to living organisms containing pyrimidine-based derivatives.

氢键对含有以嘧啶为基的衍生物的生命体具有重要作用.

Cleudine is a pyrimidine analogue with potent and sustained antiviral activity against HB.

克来夫定为嘧啶类似物,对HB具有持续有效的抗病毒活性.

Study on the synthesis of 2-diethylamino-6-methyl-4-hydroxy pyrimidine.

二乙氨基 -6- 甲基 -4- 羟基嘧啶的合成研究.

Gold contents in pyrite may as highly as ten times.

对金矿床本身而言,一般细粒级、破碎的黄铁矿含金量高.

Native ruthenium and hedleyite were identified in the pyrite quartz lodes.

自然钉及含铂赫碲铋矿发现于其中的黄铁矿石英脉型矿五中.

Cathode material of pyrite powder for thermal battery was studied.

研究了热电池正极材料常用的矿物二硫化铁粉末的特性.

The extracting iron from pyrite cinder by reductive roasting and sulfuric acid leaching was investigated.

研究了高温还原焙烧、硫酸浸取提取硫铁矿烧渣中的铁.

The Fankou pyrite lead-zinc deposit is one of the famous lead-zinc deposits in our country.

粤北凡口黄铁铅锌矿床是我国著名的以铅锌为主的超大型矿床之一.

Pyrite is more abundant and cobaltiferous and occurs in heavy patches in the sulfide mass.

黄铁矿很多,并且含钴,在硫化物块体中成稠密的斑块.

Its gold content is closely related to pyrites and arsenopyrite.

矿石中的金以不可见金为主,含量与黄铁矿、毒砂关系密切.

We utilized the change of concentration ratio between pyrites and rocks to survey gold deposits.

所以通过金在黄铁矿及岩石中浓度比值的变化,能有效地指导勘查金矿床.

Pyrites often contain several nonferrous metal and noble metal elementS and be possessed of comprehensive utilization.

黄铁矿常含有多种有色金属和贵金属元素,具有综合利用价值.