查询词典 hydrogen

However, in the presence of methanogenesis the hydrogen interspecies transfer between the hydrogenic and acetogenic bacteria and methanogenic bacteria makes partial hydrogen pressure decrease greatly, and then the whole process of anaerobic digestion c.

然而，在产甲烷的作用下，通过产氢产乙酸菌和产甲烷菌间的种间氢转移，体系中的氢分压大为降低，使整个消化过程得以顺利进行。

Sodium hydrosulfide, sodium hydrosulphide, Sodium Hydrogen Sulphide, Sodium Hydrogen Sulfide, Sodium Sulfhydrate.sodium bisulfide.

优势：殷都牌高纯度硫氢化钠，主要用于选矿、农药、染料、制革生产以及有机合成等工业，与同类产品相比，。。。。

The method comprises following steps: reacting hydroxylation carbon nano-tube successively with reagent containing halogen and hydrosulphide to prepare sulfhydryl carbon nano-tube; reflowing the sulfhydryl carbon nano-tube and platinum salts in polyatomic alcohol, processing in hydrogen atmpsphere to obtain sulfhydryl anchoring platinum / carbon nano-tube catalyst; reflowing the sulfhydryl carbon nano-tube successively with the hydrochloroauric acid and the platinum salts in polyatomic alcohol, processing in hydrogen atmpsphere to obtain sulfhydryl anchoring platinum-gold / carbon nano-tube catalyst.

本发明将市售羟基化碳纳米管先后与含卤试剂和氢硫化物反应得到巯基化碳纳米管。再将巯基化碳纳米管与铂盐在多元醇中回流，氢气氛中处理得到巯基锚固铂/碳纳米管催化剂。将巯基化碳纳米管依次与氯金酸和铂盐在多元醇中回流，氢气氛中处理得到巯基锚固铂-金/碳纳米管催化剂。

In this analogue, the hydrogen of amide group could still form a hydrogen bond with the oxygen of ester bond and the ester bond was isosteric with peptide bond.

我们合成了甜味肽的类似物L-天冬酰氨酰-L-α-羟基苯丙酸甲酯，将甜味肽的天冬氨酸替换为天冬酰胺，肽键替换为酯键。

Presented a new method for producing hydrogen using formic acid as the new material,which has not been reported,investigated the feasibility of adopting nickel as the active component of the catalyst for formic acid reaction for hydrogen production,analyzed the effect of using magnesia and lanthana as co-catalyst on the resistance to carbon formation.

以甲酸为原料制取氢气，考察了镍作为甲酸制氢催化剂活性组分的可行性以及镁和镧作为助催化剂的抗析碳作用。

The borohydride is hydrogen source for an advanced fuel cell, Imol borohydride with water produces 4mol hydrogen and Imol of side product sodium metaborate. Regeneration of metaborate for recycle of boron brings forth a bright future to the new fuel cells. In this paper, a method for the preparation of sodium borohydride from sodium metaborate was proposed.

硼氢化钠是一种燃料电池的氢源，1mol硼氢化钠催化水解产生4mol的氢气及副产物偏硼酸钠，若能实现偏硼酸钠的循环利用，该燃料电池将有广泛的应用前景。

As known as traditional viewpoint, microbe could produce hydrogen continuously only when microbic cell is fixed, so present tests of this process offen adopt this process fixed-cell technology of pure microbe and were in the scale of batch fermentation test. Now the larggest ability of bio-producing hydrogen was 20mLH〓/g biomass·h produced by Rhodospirillum rubrum and 1. 6mLH〓/g biomass·h produced by Clostridium butyricum .

传统观点认为，微生物惟有进行细胞固定化才能达到持续产氢，所以现有试验常采用纯种细胞固定化技术，且尚处于分批培养试验阶段，最大产氢能力深红螺菌为20mLH〓/g菌体·h，丁酸梭状芽孢杆菌为1.6mLH〓/g菌体·h。

The influence factors such as n/ n,n(H_2O_2)/n,the concentration of hydrogen peroxide,reaction temperature and time were studied to find how they affected the synthesizing of accelerant NOBS adopting hydrogen peroxide oxidation method.

研究了n/n、n(H2O2)/n、双氧水浓度、反应温度和时间对双氧水氧化法合成促进剂 NOBS的影响，通过L16(45)正交实验确定出的最佳合成配方及工艺条件：n/n为7；n(H2O2)/n为1.6；双氧水浓度为12%；反应温度为40℃；反应时间为3h。

NOBS PAG , can obviously activate hydrogen peroxide thus , the efficiency of hydrogen peroxide bleaching can be advanced greatly .

研究结果初步表明，此类有机酰化剂类如：四乙酰乙二胺，四乙酰甘脲，异壬酰氧基苯磺酸钠，五乙酰葡萄糖等有着非常明显的活化过氧化氢的作用，从而能在很大程度上提高纸浆过氧化氢漂白的效率。

It was found experimentally that HIC happens via nonacid nucleation and then quasi-cleavage along {111} planes when C〓 is higher. Otherwise, in the case of lower C〓, hydrogen enhances ductile fracture via hydrogen-enhancing microvoid nucleation, growth and connection.

对预充氢的310钢薄膜进行TEM原位拉伸表明，当氢浓度较高时，氢致断裂通过空洞形核，然后沿{111}面准解理扩展的方式进行；当氢浓度较低时，氢促进纳米空洞形核、长大和连通，进而导致韧断。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。