查询词典 carbon

Because the principle of the adsorption in removing heavy metals between aqueous and waste water. Therefor, the study of removing heavy metals in solution by actived carbon can help the treatment of removing the heavy metals in industry waste water and present a valuable reference for research on the disposing of metals in solution using actived carbon adsorption method.

活性炭吸附水溶液中的重金属离子与其吸附废水中的重金属离子的原理是相通的，所以对活性炭吸附溶液中重金属离子的研究有助于利用活性炭吸附技术处理工业废水，并为活性炭吸附溶液中的重金属离子方面的研究提供有益的参考。

They are classified based on their backbone of carbon atoms: Trioses have three carbon atoms, tetroses four, pentoses five, hexoses six, and heptoses seven.

单醣按其分子中碳原子的数目分类︰丙糖含3个碳原子，丁糖4个、戊糖5个、己糖6个、庚糖7个。

Carbon, excellent carbon steel systems, low-alloy system (including high-built steel), bridges, steel non-tax price of lowered 200 yuan / ton, container steel system does not tax price of lowered 150 yuan / ton, ship plate prices remain unchanged.

普碳、优碳钢系统、低合金系统、桥梁钢不含税价下调200元/吨，容器钢系统不含税价下调150元/吨，船板价格不变。

Catalysts of this invention, applied in the reaction of selective oxidation of carbon monoxide to carbon oxide from hydrogen－rich gas mixtures, exhibited highly catalytic activity and excellent selectivity.

本发明之触媒应用在由富氢气体混合物中将一氧化碳选择性氧化成为二氧化碳反应中，显现出高催化活性及优越的选择率。

SUC2 mainly encodes sucrose invertase. The invertase could hydrolyse sucrose into glucose and fructose which are carbon source for yeast growth. When sucrose is used as the main carbon source, invertase is necessary for the growth of yeast. Accordingly, it is of great significance for yeast glycometabolism to study the sequence, transcription and regulation of sucrose invertase.

蔗糖转换酶基因(SUC2)编码蔗糖转换酶，通过降解酵母细胞外的蔗糖成果糖和葡萄糖来提供酵母生长所需的碳源，在以蔗糖为主要碳源的培养条件下，蔗糖转换酶对于酵母生长必不可少，因此研究蔗糖转换酶基因序列、转录、调控等对酵母蔗糖代谢具有重要意义。

Based on the variation of δ13C as well as other geochemical proxies such as total organic carbon, hydrogen index, and carbon hydrogen ratio, the cold/warm fluctuation of the past ca. 1400 years in the study area was discussed, four warm periods and four cold periods as well as some interims between them were distinguished.

以δ13C的变化为基础并结合其他地球化学指标包括总有机碳、氢指数、碳氮比等，讨论了研究区近1400a来的冷暖变化，进一步划分出了4个暖期和4个冷期以及若干冷暖过渡期。

Carbon cations are important organic reaction intermediates,and hydrogen shift is a key path through which carbon cations isomerizes.

正碳离子是重要的有机化学反应中间产物，而氢原子移位则是正碳离子异构化的主要反应途径。

Stainless/Carbon complex pipe is a pipe that keeps the anti-erosive quality of stainless pipe, however using just 15% stainless steel in the key part of the pipe and 85% low-cost, high hardness carbon complex material.

碳素钢基不锈钢内复合管道，就是在丝毫不影响原材料防腐性能的前提下，将相当于原纯不锈钢管15%左右的不锈钢材料使用在流体接触的关键部位，其余85%部分采用价格低廉而强度较高的碳素钢管。

Multiple-paths hydrogen abstraction reactions of fluorine -with CH_3OH have been investigated at the MP2/6-311 ++ g level. The potential energy surfaces for H-abstraction reaction from carbon atom and oxygen atom were given respectively. The results indicate that there is only one minimum energy path for hydrogen abstraction from carbon atom, while multiple paths were found for hydrogen abstraction from oxygen atom. All the stationary structures, frequencies as well as PES sketch of all channels were given, in which the dominant channel is by a five-member ring transition state. The calculated heat of reaction is 170.62 kj/mol for channel 1, 119.41 kJ/ mol for branch channel 6. The results are in good agreement with experimental data.

以MP2/6-311 ++g水平上详细研究了氟原子与甲醇抽氢反应的多通道反应机理，得到了各条通道中涉及的驻点的构型和振动频率及其能量，给出了两张完整的反应势能面，结果表明，氟原子从C原子上抽氢时有一条明显的最低能量通道，而从氧原子上抽氢时要涉及多条分支通道和多个驻点构型，给出了各分支通道势能面示意图，结果表明以形成五元环状过渡态通道为优势通道，计算得到经途径1生成CH_2OH时反应放热170.62kJ/mol，经分支途径6生成CH_3O自由基时反应放热119.4 kJ/mol，此结果与实验值一致。

It is a curved rod, Gram negative, motile, form light-yellow colony, utilize carbon dioxide and sodium formate as carbon sources, but could not utilize methanol, sodium acetate, and trimethylamine.

该菌呈弯曲杆状，革兰氏阴性，有运动性，形成淡黄色菌落，能利用二氧化碳和甲酸钠作为碳源，但不能利用甲醇、乙酸钠和三甲胺。

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。