查询词典 isolation

OBJECTIVE To establish a series packed-column supercntical fluid chromatography method with for isolation of Protopine and Tetrahydropalmatine in Corydalis decumbens, and to provide a new method for isolation and preparation of alkaloid.

目的 建立一种采用色谱柱串联的填充柱超临界流体色谱法分离夏天无中原阿片碱和延胡索乙素，为生物碱类化合物的分离、制备提供新的方法。

This book explains how the system works and gives you a deep understanding of what the designers intendedfor example diving deep into page formats, explaining allocation strategies, explaining the difference between temp tables and table variables, explaining how snapshot isolation works, explaining recovery options, explaining catalog views, explaining isolation levels and how they are implemented, and so on.

这本书解释了如何在系统的运作，并让您深入了解设计师intendedfor例如潜水深入到网页的格式，并解释分配策略，解释之间的差异气温表和表变量，解释如何快照隔离工程，恢复选项解释，解释目录的意见，解释隔离级别和它们是如何付诸实施，等等。

The results showed as follows: 1 Extraction of gelsemium total alkaloids. Total alkaloids were extracted with 95 per cent ethanol. The extract rate was 0.519 per cent and the extract purity were 88.02 per cent and 87.38 per cent; Total alkaloids were extracted with chloroform .The extract rate was 0.416 per cent and the extract purity were 89.02 per cent and 94.52 per cent. 2 Isolation of gelsemium total alkaloids with TLC. Total alkaloids contained five or more alkaloids. The optimal developing agent was chloroform :methanol :ethyl acetate(9:l:0.3),the optimal eluent was methylene chloride:methanol(92:8). 3 Isolation of total alkaloids with column chromatography. Alkaloid A and alkaloid B were obtained, alkaloid B was identified as koumine.

研究结果如下：1、钩吻总碱的提取：用95％的乙醇提取钩吻生物碱提取率为0.519％，其提取物纯度为88.02％、87.35％；用氯仿提取钩吻生物碱提取率为0.416％，其提取物纯度为89.02％、94.52％。2、钩吻总碱的薄层层析分离：总碱中含有5种或5种已上的生物碱；氯仿：甲醇：乙酸乙酯(9：1：0.3)是最佳薄层层析的展开剂；二氯甲烷：甲醇(92：8)是柱层析的最佳洗脱剂。3、钩吻总碱的柱层析分离：共得到两种钩吻生物碱单体成分碱A和碱B，碱B为钩吻素子，碱A可能是钩吻素甲。4、钩吻总碱的急性毒性试验：钩吻总碱小鼠腹腔注射的半数致死量LD_(50是：7.38mg／kg，95％的可信限范围为：6.67mg／kg～7.94mg／kg。

The isolation of the project is done by outside isolation 16cm thick, to reduce heat loss.

孤立的项目是由外部隔离16厘米厚，以减少热损失。

Companies to adopt international advanced industrial automatic placement machine assembly technology, integrated circuit manufacturing equipment, production of various series of infrared photoelectric switch, proximity switches, inductive, high temperature, capacitive, Hall sensors, safety explosion-proof magnetic switches, Isolation amplifier type, permanent-magnet sensors, analog linear displacement, liquid level sensors, textile weft detection device, wire break detector, hot metal detectors, welding phase sensor, color code, fiber optic, security screens, ultrasonic sensors, gear , speed sensor, pressure, electrode-type coal-bit sensors, rotary encoder, two-way cord running series switch, counter relays, solid state relays, switching power supply, isolation transmitter, welding power rectifier, thyristor modules, etc.

公司采用国际先进工业自动贴片机装配技术，集成化电路制造设备，生产各种系列红外线光电开关，接近开关，电感式、耐高温、电容式、霍尔式传感器，安全防爆磁性开关，放大器分离型、永磁感应器、模拟量线性位移、液位传感器、纺织探纬器、断丝检测器，热金属检测器，电焊相传感器，色标、光纤、安全光幕、超声波传感器，齿轮、速度传感器，压力、电极式煤位传感器，旋转编码器，双向拉绳跑编开关，计数器继电器，固态继电器，开关电源，隔离变送器，焊机电源整流桥、晶闸管模块等产品。

In this paper, the mechanical model and analysis way of earthquake response of multistory base isolation structure using rubber bearing is described. The elastic-plastic dynamic analysis of base isolation building with inter-space shaft model is taken for the first time.

本文介绍了进行动力分析时所采用的力学模型和地震反应的分析方法，在国内首次采用了空间杆系模型在弹塑性范围内对结构进行了动力分析。

OBJECTIVE: To investigate a simple easy method for isolation of cell nuclei, and to provide a great quantity of active cell nuclei for studying neuronal nucleus transplantation, cell isolation-fusion and nucleus composition.

目的：探索简单易行的分离细胞核的方法，为神经元细胞核移植、细胞拆合以及细胞核成分的研究提供大量完好有活性的细胞核。

The method of pancreatin digestion for the isolation of submandibular gland cell is better than that of idrect isolation.

胰酶消化分离获取颌下腺细胞的方法优于直接分离法。

Path Isolation. On a matrix switching card, the isolation from signal HI and LO of one path to signal HI and LO of any other path.

通路隔离在矩阵卡上，一条通路的信号HI和LO与任意其它通路的信号HI和LO之间的隔离。

Advanced Integrated Circuits are used in signal process. The prepositive signal processor is placed close to the model rotor. The instrument amplifier, the voltage and current converter/transmitter, the isolation amplifier, the isolation power unit, the current and voltage converter etc.

将先进的集成元器件应用于测试电路的研制中，在国内首次将前置信号处理器放置于模型旋翼附近，并采用仪用放大器，电压/电流转换，隔离放大器，隔离电源，电流/电压转换等措施以实现信号远距离传输下的高信噪比信号测量。

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。