查询词典 in situ

It will availability smooth over the problem of the waste disposal. So we selected an unworked landfill in a mudstone area of Taiwan to understand by in-situ test if the groundwater will be polluted after the landfill works, and know whether there is a fault with potential disaster in the neighborhood or not.

故本研究选定一台南县泥岩地区未启用之掩埋场，藉由现地微水试验、地下水流速流向试验，以及地震与地下水之调查，用以了解未来处理废弃物后所产生之渗出水是否会对地下水源造成污染。

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。

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。

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。

Methods: immunohistochemical assay was used to detect cox 2 in 29 cervical cancer, 14 chronic cervitis and 18 normal cervixes. immunohistochemistry and in situ hybridization were used to detect the cox 2 protein and mrna in cervical cancer cell lines: siha and hela. the relationship between the expression of cox 2 and the clinicopathologic parameters of cervical cancer was analyzed.

用免疫组化方法检测29例宫颈癌患者cox 2的表达水平，并以14例慢性宫颈炎症患者和18例正常宫颈上皮为对照组；用免疫细胞化学方法和原位分子杂交法检测宫颈癌细胞株siha和hela中cox 2蛋白及基因表达。

The present dissertation deals with:(1) Exploring the feasibility of the CO〓 methanation and the conversion CH〓/H〓 into C〓 hydrocarbons under plasma with catalyst at ambient temperature and atmosphere.(2) Designing a reactor and preparing some catalysts suited for the conversion of carbon dioxide via the cooperation effect of plasma and catalysts.(3) Optimizing reaction conditions of conversion carbon dioxide to C〓 hydrocarbons in the proposed process.(4) Studying the reaction mechanism of conversion carbon dioxide to C〓 hydrocarbons under plasma by using in situ OES technology.(5) By the results of characterizing coked catalysts, exploring the reasons that result in the coking of catalyst and the paths for decreasing the deposit in the catalyst under plasma.(6) Analyzing the energy efficiency of the plasma catalysis and exploring the paths for improving the energy efficiency.

论文的主要研究工作包括：（1）探索脉冲电晕等离子体与催化剂共同作用CO〓／H〓甲烷化和由CH〓/H〓合成C〓烃反应的可行性；（2）研制等离子体催化CO〓转化的反应器和适配的催化剂；（3）优化等离子体催化CO〓转化制C〓烃反应的工艺条件和电参数；（4）利用原子发射光谱原位技术对等离子体反应的诊断结果，对等离子体催化CO〓转化制C〓烃反应的机理进行推断；（5）通过对积碳催化剂的表征结果，分析积碳的类型及其成因，并探讨减少积碳的途径；（6）通过对等离子体催化CO〓转化制C〓烃反应能量效率的分析，探讨提高等离子体催化反应能量效率的途径。

The in situ FTIR spectra suggest that DHAA exists stably in ionic liquid, but hydrolyzes in water solution.

现场红外光谱结果表明，DHAA在水中迅速发生水解反应，而在EMIMBF4中则较稳定。

The capacity of single pile will enhance when the length and diameter of pile increases, but effect of pile diameter is more obvious. While pile diameter increases 20、40 and 60 percents, the capacity of pile will enhance 20.4、53.7 and 78.1 percents. And with the effect of mud-cake, the capacity of single bored pile will fall down nearly 20 percents, and pile-side resistance will also reduce 15 — 35 percents. In the centrifuge tests, when the relative displacement between pile and soil was 45 —85mm, which is much more than the criterions, the pile-side resistance will become most. Meanwhile the intenerated value of utmost resistance is close to the resistance in situ. In the pile group tests, the capacity of pile group , which the space among piles increases from 2D to 3D、 4D and 5D , will enhance 6.1、9.6、18 percents .

当桩径增加20%、40%、60%时，桩承载力分别增长了20.4%、53.7%和78.1%；在考虑泥皮效应后单桩侧摩阻力减小15～35%，极限承载力减小18%～24%，且减小率随桩径的增加而变小；试验中桩身侧阻软化值与原型桩实测侧阻软化值接近，且极限侧阻所对应的桩土相对位移试验要比规范值大得多，约为45～85mm；同时群桩极限承载力随桩距的增大而增加，其中桩距为3D、4D、5D的群桩承载力分别比间距为2D的群桩高6.1%、9.6%和18%；其承载力效应系数η接近或大于1，并随着桩间距的增大而不断提高；群桩侧摩阻力沿深度的分布与单桩略有不同，即桩身上部由于承台的作用，侧阻削弱，但桩身中部侧阻具有增加的趋势。

In this paper quite thorough measurement in situ, as well as overall analysis of noise beside the first commercialized magnetically levitated systems in the world is presented.

在世界上第一条商业化磁悬浮轨道交通运营线上，对磁悬浮列车行驶噪声进行较为深入的现场测试，并进行较为全面的分析研究。

Phase identification and microstructure observation of the composites were performed by X-ray diffraction, Electron Probe Microanalyses and transmission electron microscopy. The results show that ZrB2 phase is equiaxed or near equiaxed, which is hexangular and less 1μm in size. ZrAl3 phase is long strip-shaped. The in-situ reinforcements are distributed uniformly in the matrix and the interface is clean,without any other chemical products.

借助于X射线衍射仪、电子探针和透射电镜对复合材料的物像和增强相进行了观察，结果表明ZrB2颗粒呈等轴或等轴颗粒状，为六方结构，尺寸大部分小于1μm，ZrAl3相大部分呈长条状，两种增强相整体分布较为均匀，且与Al的界面光滑洁净，没有其它界面生成物。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。