查询词典 hydrogen ion

Moreover, how to improve hydrogen production rate and substrate conversion efficiency is also important in the research of fermentative hydrogen production, which is also the key factor to realize industrialization.

产氢的稳定性和持久性是发酵产氢中一直存在的问题，如何在稳定持续产氢的基础上提高产氢的速率和转化率是发酵产氢研究中的重要内容，也是能否实现产业化应用的关键性因素。

Especially, in complex 2 the hexacyclic hydrogen-bonded ring adopted a chair conformation is constructed via the hydrogen bonds of Clsubscript 2A…O(subscript 6A…O(subscript 5A)…Cl(subscript 2B)…O(subscript 6B)…O(subscript 5B).

配合物2中由Cl(下标 2A)…O(下标 6A)…O(下标 5A)…Cl(下标 2B)…O(下标 6B)…O(下标 5B)构成的六员氢键环呈椅式构象。

Hexadecyl Hydrogen Maleate is a new kind of analyzer crystal for soft X-ray spectroscopy, with a large 2d spacing of 58.58A. HHM is hoped to give a better growth habit than octadecyl Hydrogen Maleate, because of its shorter chain length and narrower 2d spacing.

马来酸氢十六酯是一种新型的软X—射线分光晶体，晶面间距2d等于58.58A，与OHM属同一系列分光晶体，碳链的缩短、晶面间距的减小有望给出比OHM更好的生长和结晶习性。

Results show that intramolecular hydrogen transfer is not favored in view of the energy trend along IHT coordinate in the region such as hypericin's peri region, where two hydrogens of hydroxyl groups bond with a common oxygen of carbonyl group and exists two IHBs in the peri region. However, intramolecular proton transfer often occur in the molecule with hexahydric cycle hydrogen bond, where only one pair of adjacent hydroxyl group and carbonyl group.

此外选择设计了一个具有三个分子内氢键的体系，兼具金丝桃蒽酮和其他苝醌类光敏剂的分子内氢键特点，研究表明两个羟基氢与共同的羰基氧形成的氢键由于存在较高的势垒，很难发生分子内氢传递，即具有金丝桃蒽酮端位结构的分子其分子内氢传递很难发生，而一般的能形成六元环状结构的分子内氢键体系容易发生分子内氢传递。

The dimerization of homovanillic acid by hydrogen peroxide in the presence of manganese tetrasulfonatophthalocyanine has been adapted to the determination of hydrogen peroxide in rainwater.

在四磺基锰酞菁存在下，高香草酸与过氧化氢作用可形成强荧光二聚体，由此建立的测定水溶液中过氧化氢的荧光方法可用于本地区雨水样品的分析。

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。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48