碳的
- 与 碳的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The biological characteristics of Corticium salmo nicolor were studied. The results were as follows:1. The pathogen could g row on various C media, with glucose, and sugar the best vegetative growth, and the soluable starch the poorest vegetative growth.
本试验表明,柑桔赤衣病菌在各种碳源培养基均可生长,其中以蔗糖、葡萄糖为碳源的培养基生长最好,可溶性淀粉为碳源的生长最差。
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The polymers substituted with hexyl and octyl on phenylene also show a nematic phase, however, the nematic phase disappears for the polymer substituted with decyl. The polymers substituted with alkoxy on phenylene self-organize into a lamellar structure, and their phase behavior shows obvious dependence on the alkoxy length.
苯环上烷基、烷氧基取代的聚合物都具有纤维状的特征形貌,当烷基、烷氧基碳原子数为6时在高温都存在一个向列液晶相,当烷基碳原子数增加到10时液晶相消失,而烷氧基碳原子数增加到12时该向列液晶相仍然存在。
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A modified homogeneous flow model was introduced to calculate the flow field in RH degasser,thus getting rid of some earlier methods that are unavailable to be generalized,such as reducing the computation region or presetting the distribution of gas volume fraction.
分别对有、无旋转磁场作用时的RH系统进行了模拟计算。模拟结果表明:流场和脱碳过程与现有文献中实验结果相符合;当旋转磁场作用后,磁感应强度为0.04 T时,初期脱碳速度比无旋流作用时增加了约15%,这是由于旋流增加了系统的搅拌能,提高了脱碳反应速率。
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Based on reviewing of functionalization of saturated carbon by catalytic oxidation with metalloporphyrins and metal phthalocyanines as a mimic of the enzyme cytochrome P-450, two reaction systems of which one was the preparation of 4, 4'-dinitrostilbene-2, 2'-disulfonic acid from 4-nitrotoluene2-sulfonic acid and the other was the preparation of 4, 4'-bis (dimethylamino -diphenyl) phenylmethanol from 4, 4'-bis (dimethylamino-diphenyl) phenyl methane , were specifically studied as carfunctionalization and oxyfunctionalization of saturated carbon.
本文在全面综述金属卟啉和金属酞菁类模拟细胞色素P-450酶催化剂催化氧化饱和碳原子功能化的基础上,选择由4-硝基甲苯-2-磺酸制取4,4'-二硝基二苯乙烯-2,2'-二磺酸和由4,4'-二苯基甲烷制取4,4'-二苯基甲醇两个反应体系进行饱和碳原子碳功能化和氧功能化的具体研究。
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These results indicate that tungsten carbide decorating on the surface of carbon nanotube is one of the effective ways to improve its electrocatalytic activity.
这说明将碳化钨复合到纳米碳管的外表面是提高碳化钨电催化活性的有效技术方法之一。
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The surface characters of GC electrochemically activated glassy carbon electrode also were investigated on the base of Vitamin C and dopamine probe, and were compared with that of carbon nano tube and graphitic powder.
以维它命C和多巴胺为电化学分子探针,调查了采用不同电化学活化方法活化的玻碳电极表面电化学性质,并与碳纳米管和石墨碳粉颗粒的表面进行了相比较。
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According the research, by inducing TiC into conventional carbon/ graphite materials, their flexural strength increased 13.4%, compressive strength increased 38.1%, void ratio decreased 16.9% in respective. The reason of the performance improvement is as follows: TiC decomposed during the process and hence Ti accelerate the graphitize process, which can increase the mechanical performance of the carbon/ceramic composite materials.
从研究结果可以看出,TiC掺杂可使碳陶瓷复合材料的抗折强度提高13.4%,抗压强度提高38.1%,气孔率降低16.9%;其机理在於TiC掺杂在碳陶瓷复合材料制备过程中能促进碳陶瓷石墨化,使晶体更加完整、细化,有利於力学性能的提高。
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Heat treating technology development closely connected with three large scale technology andequipment importing is reviewed, and the fbatures of hcat treating specialization and large scale production areanalyzed. Main tcchnical progresses ofgas carbonitriding instead ofliquid cyaniding, improvement ofcontrol accuracyin gear carburizing, improvement of carburizing layer unitbrmity by preoxidation, increment of raw gas purity incontrolled atmosphere use of fbrging wastc heat cooling control for normalizing,...
回顾我国汽车工业热处理技术发展与3次大规模技术引进密切相关,分析了汽车工业热处理技术发展专业化,规模生产的特点,列举了10年来在气体碳氮共渗取代液体氰化;齿轮渗碳控制精度提高;采用预氧化工艺提高渗碳层均匀性;解决可控气氛中原料气纯度以及锻造余热控冷正火和等温正火技术的应用等方面嵢〉玫闹饕删停岢龈咝=⑷却砩璞缸ㄒ档冉ㄒ椤
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In order to improve the solubility of the CNTs in solution without any structural damage, the surface-modified approach with noncovalent bond is considered. Anionic polyelectrolyte, poly(sodium 4-styrenesulfonate), used as modifier was applied to overcome the difficulty of CNT's dispersion into insoluble and infusible polymer matrix.
为了使奈米碳管在高分子基材中达到良好的分散性,又不会破坏其原始特性,本研究采用非共价键结表面改质的方式来进行奈米碳管之分散,研究中以阴离子型聚电解质,Poly(Sodium 4-Styrenesulfonate),为奈米碳管分散剂。
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The dissertation mainly consists of two parts:1. The Reaction Chemistry of Alkynes under Palladium Catalysis Part 1 studies the reaction α,β-unsaturated carbonyl compounds with alkenylpalladium intermediate generated by nucleopalladation, and discovered 1 the Pd-catalyzed tandem addition reaction of halides, alkynes and α,β-unsaturated carbonyls,2 the four-component tandem addition reaction of halides, alkynes and α,β-unsaturated carbonyls, 3 the tandem intramolecular oxypalladation-conjugate additionreaction of alkynoic acids with α,β-enals. These new reactions provide notonly efficient highly stereoselective methods for the synthesis of γ,δ-unsaturated,polyunsaturated carbonyl compounds and γ-lactonic aldehydes, but also thebasic transformations for a number of C-C bond formation reactions which can be usedto design synthesis of many acyclic, cyclic or polycyclic compounds.
本论文的主要工作分为两个部分:一、钯催化下炔烃的反应化学在本小组前人工作的基础上,我们详细研究了炔烃亲核钯化产生的烯基钯中间体与α,β-不饱和羰基化合物的反应,发现两价钯催化下卤离子-炔烃-α,β-不饱和醛酮的串联加成反应、卤离子-炔烃-α,β-不饱和醛酮的西组分串联加成及炔酸分子内氧钯化-串联Michael型加成反应;由此发展了γ,δ-不饱和醛酮、多不饱和羰基化合物和带有醛酮基侧链的γ-丁内酯衍生物的高立体选择性合成方法,这一过量卤离子存在下的烯基钯对α,β-不饱和羰基化合物共轭加成反应的发现,为大量碳-碳键形成反应的实现提供了基础,使我们能够从这一基本反应出发,设计和开发多种分子内、分子间的碳碳成键反应,以好的立体、区域选择性组建开链、环状及多环类型的化合物。
- 推荐网络例句
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By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.
到它被攻陷的时候,里面多数的犯人是写了反对政府贪污文章的作家。
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The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.
在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色,卵在发育96h后卵基本全部孵化。
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There was a conflict between plebs and patricians in ancient Rome in 494BC.
在公元前494年,罗马发生了一次平民反对贵族的斗争。