合成气

Since C6 and higher alcohols are not obtainable by a direct biochemical route, it is proposed to synthesize these using known chemical reactions, wherein the raw material for synthesis is biogas and lower C2-C5 alcohols obtained by the inventive method wherein the amino acids leucine, isoleucine, and valine, or a mixture thereof, optionally obtained from yeast autolysate, is used as a biocatalyst at the stage of fermentation.

因为C6和更高级醇类不能通过直接生物化学途径制得，所以提出用已知的化学反应合成这些化合物，其中合成的原料为本发明方法制得的生物气和C2-C5醇类，其中任选从酵母自溶作用得到的亮氨酸、异亮氨酸和缬氨酸或其混合物的氨基酸在发酵阶段用作生物催化剂。

The results show that when the WC-Al2O3 composite ceramic materials are prepared by SHS,the formation and vaporization of gaseous phase products are the important factors influencing reaction par...

结果表明，采用自蔓延高温合成技术制备WC－Al2O3复合陶瓷材料时，气相产物的生成及挥发是影响反应参数和合成产物相组成的重要因素。

Uses: Suitable for gas adsorption, the decolorization and refining of catalyst carriers and monosodium glutamate, citric acid and oil; used in catalyst of phosgene synthesis; as catalyst carrier for high mercury chloride, vinyl acetate synthesis, etc.

用途： 适用于气相吸附，催化剂载体和味精、柠檬酸、油类的脱色、精制以及光气合成用的触媒、氯化高汞、醋酸乙烯等合成工艺的触媒载体。

Finally, 2-Bromo-5-formyl -3-methylpyrrole was prepared by refluence under the alkaline condition. The structures of the synthetic products were characterized by elemental analysis, infrared, gas mass and 1H nuclear magnetic resonance.

对上述各步的合成过程中，通过元素分析、红外光谱、气相质谱和核磁共振光谱等检测手段对所合成的化合物进行了结构表征。

objective to determine the contents of residual acetone in acetoacetic ester,the raw material for the synthesis of edaravone, by gas chromatography.methods sample solution was injected on a gdx column (0.18 mm～0.25 mm) with nitrogen as the carrier gas.the residue was calculated by the external standard method.results the linearity was good over the range of 25 μg/ml～400 μg/ml,with the correlation coefficient of acetone being 0.996 and the average recovery 96.8%.conclusions the method was proved to be simple,rapid,practical and highly sensitive.it is an efficient method for the quality control of acetoacetic ester.

摘要］ 目的：用气相色谱法测定依达拉奉合成起始原料乙酰乙酸乙酯中丙酮的残留量。方法：采用固定相为二乙烯苯乙基乙烯苯型高分子多孔小球（直径为0.18 mm～0.25 mm），氮气为载气，用外标法测定乙酰乙酸乙酯中残留丙酮的含量。结果：该方法在丙酮浓度范围在25 μg/ml～400 μg/ml内呈良好的线性关系，响应曲线相关系数为0.996，平均回收率为96.8%。结论：本法简便，快速、实用，灵敏度高，可有效地用于乙酰乙酸乙酯的质量控制。

Objective To determine the contents of residual acetone in acetoacetic ester,the raw material for the synthesis of Edaravone, by gas chromatography.Methods Sample solution was injected on a GDX column (0.18 mm～0.25 mm) with nitrogen as the carrier gas.The residue was calculated by the external standard method.

摘要］ 目的：用气相色谱法测定依达拉奉合成起始原料乙酰乙酸乙酯中丙酮的残留量方法：采用固定相二乙烯苯乙基乙烯苯型高分子孔小球（直径为0.18 mm～0.25 mm），氮气为载气，用外标法测定乙酰乙酸乙酯中残留丙酮的含量。

In the present study, tungsten oxide nanomaterials were synthesized by a modified plasma arc gas condensation technique. The effects of the plasma currents (70~90 A), chamber pressures (200~600 torr), production time（3~12 min）, oxygen partial pressure Ar:O2（1~6:1）and plasma including the hydrogen（0~10 %）on the preparation of tungsten oxide nanostructures were investigated. Pre-treatment on the tungsten oxide nanorods for surface modification was investigated by atmospherical plasma jet. The optical, filed emission, and gas sensing characteristics of tungsten oxide nanopowders were also examined.

本研究系利用电浆电弧气凝合成法来制备氧化钨奈米材料，分别探讨不同腔体压力（200~600 torr）、电浆电流（70~90 A）、制备时间（3~12 min）、氧分压Ar：O2（1~6：1）、电浆气含氢量（0~10 %）对於产物的形貌、相态影响，并使用常压低温电浆设备对氧化钨奈米棒进行表面处理，且针对氧化钨奈米材料的光学、场发射以及使用自行组装气体感测量测设备量测其气体感测特性。

In order to promote the development of research work of 〓CO〓 breath tests in diagnostics as well as the popularization of clinical application of 〓CO〓 breath tests,〓C-labelling octanoic acid, palmitic acid, cholesteryl octanoate and tripalmitin were synthesized in this paper.

为了促进我国〓CO〓呼气试验诊断学研究工作的开展及其在临床应用上的普及，本论文一方面合成〓C-标记的辛酸、软脂酸、三软脂酸甘油酯和辛酸胆固醇酯，另一方面对其呼气试验的方法学和应用研究进行了初步的探讨。

According to Ag2S-Ga2S3 pseudobinary phase diagram, AgGaS2 polycrystalline materials with the congruent melt composition were synthesized by a new method, i. e. vapor transporting method with two-zone temperature oscillation, and generic vapor transporting method respectively.

根据对Ag2S-Ga2S3赝二元相图的分析，采用同成分点配料，分别采用一种新方法―两温区气相输运温度振荡法和普通气相输运法合成AgGaS2多晶材料。

For example, before the slice force curve each step of cylinder is completed, force of inertia,top side gas force,shaft side gas force are required, per curve will possess 36 calculation spots at least.

尤其动力计算中采用非传统的解析法进行往复惯性力、盖侧气体力、轴侧气体力、切向力曲线的绘制使得压缩机切向力曲线的合成变得非常简便，计算过程解决的

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。