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微量MOCA快速中间控制测定的薄层色谱法 被引量:2
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作者 汤崇正 《色谱》 CAS CSCD 北大核心 1990年第6期389-391,共3页
聚醚-聚丁二烯共聚物弹性体的缩聚过程中,存在着残留微量扩链剂MOCA[4.4′-亚甲基双(2-氯苯胺)]。在多个样品平衡试验中,对它进行快速中间控制对比测定是制备过程的必要环节,参考C.Fenimore实验,以TLC板用等量点样量不同径度地点样于板... 聚醚-聚丁二烯共聚物弹性体的缩聚过程中,存在着残留微量扩链剂MOCA[4.4′-亚甲基双(2-氯苯胺)]。在多个样品平衡试验中,对它进行快速中间控制对比测定是制备过程的必要环节,参考C.Fenimore实验,以TLC板用等量点样量不同径度地点样于板上,经展开到适当距离后会集束于相同的径度。由此推想此时TLC板的单位面积具有相同的负荷量。本文用简易的TLC法在没有特殊设备下经多次探索其灵敏度和重复性良好。 展开更多
关键词 MOCA 快速控制测定 薄层色谱法
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Research on Improving Directional Stability for Airborne Laser Designator
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作者 DANG Li-ping TANG Shu-gang ZHOU Zhou 《Semiconductor Photonics and Technology》 CAS 2009年第4期235-240,246,共7页
The major purpose of this paper is to reduce the laser directional deviation of laser designator on a moving platform.A new method of inhibiting the laser beam positional error caused by platform movement and vibratio... The major purpose of this paper is to reduce the laser directional deviation of laser designator on a moving platform.A new method of inhibiting the laser beam positional error caused by platform movement and vibration is proposed.In this method,quadrant detector(QD)and fast steering mirror are combined to measure the angle between laser designator axis and the line-of-sight of the target,then a control signal composed with the angle errors is generated to aim the axis of the laser designator at the target steadily.This is a real time processing method and it is suitable for airborne laser-guided weapons with second-class guiding time. 展开更多
关键词 directional stability laser beam fast steering mirror quadrant detector
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