منابع مشابه
Cleaning methods for ultrasound probes.
OBJECTIVE To determine the effectiveness of three different methods of ultrasound probe cleaning for the prevention of nosocomial infections. STUDY DESIGN Experimental study. PLACE AND DURATION OF STUDY Radiology Department, the Aga Khan University Hospital, Karachi and Microbiology Department, JPMC, Karachi, from December 2006 to April 2007. PATIENTS AND METHODS A total of 75 culture swa...
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Gas ows throughmicro lters are simulated in the continuumand slip ow regimes as a functionof theKnudsen, Reynolds, and Mach numbers. The numerical simulations are based on the spectral element formulation of compressible Navier–Stokes equations, which utilize previously developed high-order velocity slip and temperature jump boundary conditions. Both slip and no-slip simulations are used t...
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We evaluated 10 microfilters for their ability to filter diluted sera without removing immunoglobulins (Ig) G, A, and M, albumin, and transferrin. In general, filters containing cellulose nitrate remove IgG from solution, the amount adsorbed being proportional to the IgG concentration in the solution. With some sera we noted IgA and IgM adsorption to cellulose-nitrate-containing filters, but th...
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Fibrous filters were fabricated using a novel melt co-extrusion and two-dimensional multiplication technology combined with a high pressure water jet delamination technique. The filters made from polypropylene (PP) / polyamide 6 (PA6) system exhibited micro to nano scale fibers having uniform fiber distribution and superior mechanical properties. Effects of film draw ratio upon co-extrusion on ...
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The cleaning of heat exchangers, and other large process equipment, using large-scale ultrasonic systems has, in the past few years, progressed from a “curiosity” to a proven, practical tool for many clients. Research and a greater understanding of the physics involved in the cleaning process and the practical considerations of operating in the field have led to improvements in design and usabi...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1999
ISSN: 0001-4966
DOI: 10.1121/1.426158