nahs

In view of the difficult position of the plant of producting BaCl_2 and NaHS , and on the basis of existing process , the improvement of the product structure is put forward .

针对生产氯化钡、硫氢化钠等产品的化工厂的困境，在不做大量投资、不做大的改动、不改变原厂的基础上，提出了改善产品结构、革新生产工艺的方法。

Kinetics for synthesizing isopropyl mercaptan from NaHS and2-bromopropane in the presence of catalyst was studied ; the reaction and the kinetic model of the whole process were investigated .

研究了硫氢化钠和2-溴丙烷在催化剂作用下合成异丙硫醇的反应动力学，建立了动力学模型。

It is determined experimentally that concentration of NaHS is about 15 % , reaction time is controlled within 2.5 h after chloroacetic acid had been added ;

实验确定NaHS溶液浓度为15%左右，加完氯乙酸后反应时间控制在2.5h以内；

A new sulfidizing agent instead of Na 2S and NaHS . has been used to prepare thiomolybdate from sodium tungstate solution .

采用新型硫化剂RS代替Na2S和NaHS，从钨酸盐溶液中制取硫代钼酸盐。

NaHS preconditioning could stabilize the mitochondrial membrane potential , reduce MPTP sensitivity , reduce the mitochondria swelling and protect the mitochondrial function against liver ischemia-reperfusion injury .

H2S预处理后，可以稳定肝脏I/R损伤后的线粒体膜电位，降低MPTP敏感性，减少线粒体肿胀，保护线粒体功能，保护肝脏细胞。

The effects of absorbing solution pH , the adding order of NaHSO_3 and NaHS , and the dosage of NaHS on the yield of sulfur were investigated .

考察了吸收液pH、NaHSO3和NaHS的添加顺序、NaHS添加量对硫产率的影响。

Loss of X chromosomal inactivation mosaicism was demonstrated in all of the 5 mixed-cell NAHs with small-cell change ( SCC ), indicating their neoplastic nature .

伴有小细胞性改变（SCC）的5个混合细胞性NAH均显示X染色体失活嵌合性丢失，提示为肿瘤性病变；

Objective To explore the impact of hydrogen sulfide ( H_ 2 S ) donor , sodium hydrosulfide ( NaHS ), on pulmonary vascular structure and vasoactive peptides in rats with pulmonary hypertension induced by high pulmonary blood flow .

目的探讨硫化氢供体对高肺血流性肺动脉高压大鼠肺血管结构重建及血管活性多肽的影响。

Compared with rats in the control group , the expression of collagen type ⅲ in median pulmonary arteries increased by 38 % in the hypoxia group ( P < 0.01 ), while there was no significant difference between the hypoxia group and the hypoxia + NaHS group .

低氧组大鼠的肺中型肌性动脉中Ⅲ型胶原蛋白表达较对照组增加38%（P<0·01）；但是与低氧+NaHS组相比无明显变化（P>0·05）。

The content of Na 2S and NaHS in the tannin extract desulfurizing liquid is determined by precipitation , filtration , iodimetry and acid-base titration . This method is simple and practicable , convenient for analysis in production , and has great significance in supervising production .

通过沉淀、过滤，再用碘量法和酸碱滴定来测定栲胶脱硫液中Na2S、NaHS的含量，具有方法简单可行、便于生产分析的特点，对指导生产有重要意义。