气体栓塞现象中δ值的意义及其测试方法的研究  

THE METHoD OF MEASOURING δ-VALUE IN THE AIR EMBOLUE AND SIGNIFICANCE OF STUDYING IT

作　　者：张家修[1] 龚志澄[1] 陈建方 林泽玲 

机构地区：[1]蚌埠医学院

出　　处：《中国医学物理学杂志》1996年第2期118-119,共2页Chinese Journal of Medical Physics

摘　　要：本文指出气体栓塞现象中δ［１］值的测定，在表面物理学、物理化学等学科中，理论和实践方面的意义：给出δ值的二种定义：提出δ值的一种切实可行的测试方法：液体两端的压强差采用方便可行的“热加压法”来实现，同时还指出实验成败的关键所在。最后对塑料毛细管中一段和数段蒸溜水液柱进行了测量，得出精确可靠的δ值，并证实：推动数段液柱所需的大小压强主与液柱的段数成正比的结论。The author have first presented the δ-value-measuring role in air embolus phenomenon andpointed out its significance for forsurface physics and Physical Chemistry.Two δ-value defining methods are de-scribed and the practical and feasible measuring method is reported.The pressure difference between two ends ofa liguid column is produced by thermel pressure,with the key to success of such experiments point out.The accu- rate and reliable results of measuring δ-value have been obtained.with one or multiple segments of a liquit columnin plastic capillary tube detected The minimal pressuredifference forcing n liguind column to Tnove has proved tobe equal to nδ.

关 键 词：δ值 气体栓塞 热加压法 

分 类 号：R318.01[医药卫生—生物医学工程] O552.421[医药卫生—基础医学]