The purpose of this study is to discuss the impact fatigue failure mechanism of a suction valve that involves the fracture with fragments torn off from the edge or surface. The shape and dimensions of the test specimen and stopper were made the same as those of the suction valve and stopper in an actual compressor. The specimen was operated by short-duration compressed air pulses, and struck ag...

Cork is a natural material produced in the Mediterranean countries. Cork stoppers are used to seal wine bottles, Cork stopper quality classification is a practical pattern classification problem. The cork stoppers are grouped into eight classes according to the degree of defects on the cork surface. These defects appear in the form of random-shaped holes, cracks, and others. As a result, the cl...

Blood collection devices interact with blood to alter blood composition, serum, or plasma fractions and in some cases adversely affect laboratory tests. Vascular access devices may release coating substances and exert shear forces that lyse cells. Blood-dissolving tube additives can affect blood constituent stability and analytical systems. Blood tube stoppers, stopper lubricants, tube walls, s...

We evaluated the evacuated phlebotomy tube designed specifically for trace metal analysis by Sherwood Medical Co. Pools of human serum containing known concentrations of aluminum, arsenic, calcium, cadmium, copper, chromium, iron, lead, magnesium, manganese, mercury, selenium, and zinc were exposed to the tube and rubber stopper for defined periods ranging from 5 min to 24 h. Analysis for each ...

Objective: The purpose of this study was to determine if the presence of cyclosporine A (CsA) in whole-blood samples decreased labeling efficiency when an in vitro red blood cell labeling procedure is used. Methods: Red blood cells were labeled by an in vitro method which required sodium pertechnetate, disodium edetate (EDTA), stannous chloride and stopper down centrifugation. Labeling efficien...

The LHC injection systems consist of horizontally deflecting steel septum magnets and vertically deflecting kickers. A mobile beam stopper is placed downstream of the kickers for setting up with single bunches and to protect the superconducting machine elements during normal injection in the event of a malfunctioning of the kickers. The effects of various potential kicker failures and their imp...