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OBJECTIVES To examine the influence of in vivo hydrolysis on the physical properties of polyester grafts and their correlation to the period of implantation in the human body. MATERIALS AND METHODS Sixty-five explanted vascular grafts were obtained after 0-23 years of implantation due to suture aneurysms (18), occlusion (12), graft infection (12), failure… (More)
— In this paper we consider the problem of estimating the propagation delays of a synchronous direct-sequence code division multiple access (DS-CDMA) system operating over a multipath fading channel. In a mobile receiver , the task of delay estimation can be divided into an acquisition of all multipath delays and subsequent tracking of the individual delays… (More)
This is a test report on the infusion pump IVAC Starflow model 581, which shows a serious risk of air embolism if the infusion bottle is accidentally brought into an upright position.