查询词典 in situ

Electrochemical voltametric methods and in-situ electrochemical surface-enhanced Raman spectroscopy were used to investigate the electrooxidation behavior of ethanol in different media on a roughened platinum electrode.

采用常规电化学伏安技术和电化学原位表面增强拉曼光谱(in-situ SERS)技术研究了不同介质中乙醇在粗糙铂电极上的电催化氧化行为。

A systematic study has been made for the electrochemical oxidation reaction of biliverdin in pure dimethylformamide and in DMF-H~2O mixed solvent by in situ time resolved spectroelectrochemical and cyclic voltametric techniques.

本文采用现场时间分辨光谱电化学技术结合循环伏安电化学方法对胆绿素在纯二甲基甲酰胺和DMF-H~2O混合溶剂中的电化学氧化反应进行了较为系统的研究，并提出了相应的反应机理。

Monodispersed and high density nanocrystalline GaN particles were in-situ synthesized in silica xerogel by a sol-gel method.

采用溶胶凝胶方法制备了高密度、单分散的氮化镓量子点/二氧化硅干凝胶复合材料。

Based on the project requirements, the research has focused on the confined electronic states in the semiconductor surface quantum wells. The moden quantum theory and advanced material growth technology have been used. The interband transitions in the surface quantum well have been studied by the in-situ photo-modulated reflection spectroscopy combined with the molecular beam epitaxy system. The optical transitions, including the tansition between ground or excited states of the electron and hole states, have been directly observed.

根据项目任务书的要求，本项研究在现代量子理论与先进材料生长技术基础上对半导体表面量子阱阱结构中的受限电子能态进行系统的光谱实验与理论研究，通过与分子束外延设备直接耦合的光调制光谱手段在原子层量级上直接观测到了表面量子阱中本征能态间的光跃迁特性，其中包括基态间的跃迁和激发态间的跃迁。

The particular preparation procedure is as follows: preparing a carbon nanotube with carboxyl by acidulating the carbon nanotube; Preparing the carboxylic carbon nanotube/nylon 66 composite material by polymerizing the carboxylic carbon nanotube and the raw material (such as polybasic acid and polybasic amine) which is used for preparing the nylon 66 through in situ polymerization.

具体步骤为：通过对碳纳米管进行酸化，制备携带羧基的碳纳米管。通过原位聚合法将羧基化碳纳米管与制备尼龙66的原料进行聚合，制备羧基化碳纳米管/尼龙66复合材料。

Optimum reaction conditions were outlined for the in-situ polymerization of aniline onto the surface of rayon fiber and alkalized PET fiber.

讨论了聚苯胺的导电机理以及碱减量处理条件、聚合反应条件对聚苯胺／粘胶和聚苯胺／涤纶导电复合纤维导电性的影响。

A one-step method for the synthesis of aromatic indolizine derivatives byintramolecular 1,5-dipolar cyclization reaction of 2-(2-arylethenyl)pyridinium N-ylidesin the presence of an oxidant has been studied for the first time. In the presence ofelectron-deficient olefins, however, 2-(2-phenylethenyl)pyridinium N-ylides underwent1,3-dipolar cycloadditions and then aromatized in situ by TPCD to produce indolizinederivatives, indicating 1,3-dipolar cycloaddition proceed more readily than 1 ,5-dipolarcyclization in these conditions. Pyridinium disubstituted N-ylides, readily obtainedfrom corresponding pridinium and β-chlorovinyl ketone, underwent thermalintramolecular 1,5-dipolar cyclization to give indolizine derivatives easily.Indolizinecarbaldehyde derivatives were synthesized starting from 2-pyridinecarbaldehyde in four-steps involving 1,3-dipolar cycloaddition reaction.

本文首次研究了2-(2-芳基乙烯基)吡啶N-叶立德在氧化剂存在下的分子内1，5-偶极环化反应，采用一锅法合成了中氮茚衍生物；研究了这些N-叶立德的1，5-偶极环化和1，3-偶极环加成反应的选择性，发现当有缺电子烯烃存在时，优先进行1，3-偶极环加成反应，而不再发生分子内1，5-偶极环化反应；由β-氯乙烯酮方便地得到了烯丙基N-叶立德，他们在加热时进行分子内1，5-偶极环化反应而得到中氮茚衍生物；由2-吡啶甲醛为起始原料，通过1，3-偶极环加成反应等四步反应，得到了重要的中氮茚甲醛衍生物，这些反应都具有条件温和和操作简便的特点，是合成中氮茚衍生物的新方法。

COMPS bolsters existing in-situ measurements and modeling programs funded by various state and federal agencies.

COMPS 承梁现有的原地测量和塑造节目由各种各样的州和联邦机构资助。

COMPS bolsters existing in-situ measurements and modeling programs funded by various state and federal agencies.

相关节目comps枕现有的实地测量和建模节目经费由国家和联邦机构。

The effect of Nisin and phytic acid in situ on inhibition and inactivation of Gram negatives which include the rotten pickle vegetable was studied,contraposing the problem of cabined restrain bacteria range of Nisin.

针对Nisin抑菌谱狭窄的问题，采用复合生物防腐的方法，研究Nisin与植酸复合作用对腌制蔬菜中G-腐败菌的抑制效果。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。