查询词典 in situ

In the same time, water-soluble bidental phosphines ligand BISBIS sulfonated 2,2''-bis(diphenylphosphinomethyl-1,1''-biphenyl was synthesized, and water-soluble rhodium complex Cl was synthesized in situ. This complex which was used as catalysts to catalyze the hydrogenation of avermectin was also tested. Although the rhodium complex containing bidentate phosphine BISBIS showed a higher catalytic activity than one containing TPPDS, the selectivity for ivermectin was lower. How to improve the selectivity will be needed to studied in futur.

同时我们用磺化的2，2''-二-- 1，1''--联苯，以及它们的水溶性威尔金森型铑配合物和环辛二烯的阳离子铑配合物，在利用这些配合物作催化剂，考察它们在各种反应条件下对阿维菌素的选择加氢，由于反应条件以及复合催化剂体系的组成还需要进一步优化，虽然双齿膦配合物显示了较高的活性，然而选择性还有待进一步提高。

Objective To study in situ the intraocular position of the ins-claw phakic intraocular lens in myopic eyes using ultrasound biomicroscopy.

目的 研究虹膜夹型有晶状体眼人工晶状体(iris-claw phakic intraocular lens， ICPIOL)在国人眼前节的位置和形态特征。

Taking the integrated bioreaction and separation process as guide, a new technique, viz. the technique of in situ product removal based on the adsorption of the product by macroreticular resin JD-1 directly from the fermentation broth, was developed for pristinamycins production.

以生物反应与分离耦合的集成化思路为指导，建立了以JD-1大孔吸附树脂直接从发酵液中吸附分离目标产物的原位分离技术并耦合普那霉素发酵的新方法。

Using cobalt-2,2＇-bipyridyl complex as template, molecularly imprinted polymer membranes with supporting membranes were synthesized through in-situ polymerization by UV irradiation.

采用分子印迹技术紫外光引发原位聚合的方法制备了带支撑膜的钴离子配位分子印迹聚合物膜。

It is inportant to understand the limitations of rock mass classification schemes（Palmstrom and Broch,2006）and that their use does notreplace some of the more elaborate design procedures.However,the use of these design procedures requires access to relatively detailed information on in situ stresses,rock mass properties and planned excavation sequence,none of which may be available at an early stage in the project.As this information becomes available,the use of the rock mass classification schemes should be updated and used in conjunction with site specfic analyses.

最重要的是理解的限制(Palmstrom岩体划分方案及Broch，2006年)，他们的使用不部分的取代更多精心设计的程序然而，使用这些设计程序需要获得相对的详细资料，对原位应力、围岩特性和计划挖掘序列中，所有这些都是极有可能在早期的工程这个信息，利用岩体的分类方案应更新，并结合现场应用光学分析。

Three hydroxyapatite powders (HAP1, HAP2 and HAP3) were prepared by hydrolyzation process using brushite, precipitation method using calcium hydroxide and ammonium phosphate and neutralization method using calcium hydroxide and phosphoric acid, respectively. Hydroxyapatite/collagen composite was prepared by in situ precipitation method using calcium hydroxide, phosphoric acid and bovine collagen which was extracted from the fresh bovine tendons.

本研究以相关钙盐、磷酸盐为原料，分别用二水合磷酸氢钙水解法、氢氧化钙-磷酸氢二铵沉淀法和氢氧化钙-磷酸酸碱中和工艺制备了三种羟基磷灰石粉体，分别为HAP1、HAP2和HAP3；并以氢氧化钙、磷酸和从牛腱中提取的胶原为原料通过原位沉淀制备了羟基磷灰石/胶原复合材料。

N2O emission fluxes before and after reclamation of Calamagrostis angustifolia wetland in Sanjiang Plain were observed in situ with static-chamber and GC methods.

利用静态箱-气相色谱法对三江平原小叶章湿地开垦前后N2O的排放通量进行了原位测定，分析了N2O通量特征及其与温度、水分等环境因子的关系。

Electrochemical oscillation of lead electrode in sulfuric acid has been explored with in-situ ellipsometry.Effects of improvement of electrodes properties are affected by increase or decrease of surface temperature of the samples badly during ion implantation. Some theories and methods on substance diffusion transfer have been applied to calorifics to obtain mathematical relation between the surface temperature on the samples and operation time during ion implantation.

掠射式椭圆偏振方法是本论文提出的一种全新的研究方法，为验证这种现场研究方法的可行性，本论文选择了几个用其它方法研究较为成熟的电化学体系并结合本论文研究的化学电源体系，以掠射式椭圆偏振技术进行研究，提出了改良镍电极、锌电极、铝电极和铜电极性能的具体措施或者理解这些电极表面性质和涉及它们的电极过程的实验依据，为使用这些电极的化学电源性能的提高奠定了基础。

In this study,an experimental modelwas developed and established with freshwater crayfish Cambarus clarkii to prolif-erate White Spot Syndrome Virusin vivo.The success and reliability ofthis model was confirmed by transmission electron microscopy,dot-blotand hybridization in situ etc.

本研究在阐明WSSV对常见淡水甲壳纲动物的侵染活性的同时，成功地建立了WSSV淡水克氏螯虾体内增殖模型，并通过电镜技术、核酸探针斑点杂交与原位杂交等手段证实所建立的增殖模型的可靠性。

Methods: The rat intestine was cannulated for in situ recirculation.

目的：探讨咖啡因在大鼠各肠段的吸收动力学特征。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。