氢

Rubrum reaches 2800 mL/PBR with the optimal light intensity of about 30000~40000 Lux.

rubrum产氢可维持6 d~ 10 d，最高氢产量可达到2800 mL/PBR。

Hydrogen fuel cells and hydrogen fuel engines will be a big part of our future.

氢燃料电池和氢燃料发动机将在我们的未来扮演重要角色。

The identity of the gene encoding the mitochondrial K-activated acetaldehyde dehydrogenase K(+-ACDH of Saccharomyces cerevisiae has been confirmed. The gene is situated on the right arm of chromosome XV, bears the systematic name YOR374w and the deduced product shows significant homology to other members of the S.

中文摘要酵母菌醛类去氢酶4（YOR374w）是一种位在粒线体内的去氢酶，需要钾离子的活化，以及NAD+或NADP+当辅酶，在乙醇的代谢途径扮演很重要的角色，尤其是以乙醇当碳源的环境下。

The water added in the reaction system was a reactant witch via the water gas shift reaction to generate hydrogen in situ witch in turn is used for residue upgrading.

在本研究的反应体系中，水主要作为一种反应物，与体系中存在的CO通过水—气变换反应现场为渣油加氢提供氢源。

Beta molecule sieves has good catalytic activity in hdrocracking and hydrogenated isomerization, and good adsorption capacity to straight chain paraffin, and also capacity to avoid sulfur, nitrogen poisoning.

beta；分子筛具有很高的加氢裂化、加氢异构化催化活性和对直链烷烃的吸附能力，并有良好的抗硫、氮中毒能力。

In this paper, the antiseptic effect of the complex form of both Calcium Propionate and Sodium Dehydroacetate and the complex form of Calcium Propionate ,Sodium Dehydroacetate and Potassium Sorbate in bread have been studied .

研究了丙酸钙与脱氢醋酸钠两者复配形式、丙酸钙与脱氢醋酸钠和山梨酸钾三者复配形式对面包的防腐效果。

The program is used to deconvolve electron energy loss spectrum of H2. Vibrationally resolved optical oscillator strengths are determined. The results agree well with previous experimental and theoretical studies.

利用该软件处理氢分子的电子能量损失谱，得到氢分子不同电子态的振动跃迁的截面信息，所得结果与以前的实验结果符合很好。

Hormonally induced hair loss takes place when an enzyme starts to convert the hormone testosterone on the scalp to its less useful version,dihydrotestosterone, or DHT.

激素引起的脱发，当一种酶开始把睾丸酮转变为双氢睾丸酮时，头皮就会被大量的双氢睾丸酮占领，然后攻击毛囊并使它缩小，甚至完全消失。

Epoxidation, Hydroboration (Anti-Markovnikov Addition), Osmylation and Ozonolysis. Alkene Polymerization. Barbara Imperiali

氢化，HX 的加成（Markovnikov加成），卤化，环氧化，氢硼化（反-Markovnikov加成），臭氧化与臭氧化物分解，烯烃聚合。

When the heterogeneous catalyst is used in the asymmetric catalytic hydrogenation reaction of ethyl pyruvate under the room temperature and the medium hydrogen pressure, high activity and optical selectivity more than 70 percent are obtained in acetic acid solution, and the heterogeneous catalyst can be repeatedly used for more than 15 times.

本发明提供的催化剂在室温、中等氢压力下用于丙酮酸乙酯的不对称催化氢化反应时在乙酸溶剂中可得到高活性和超过70％的光学选择性，且可以重复使用15次以上。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐