Cleaning NMR Tubes
نویسندگان
چکیده
منابع مشابه
Effect of mechanical cleaning of endotracheal tubes with sterile urethral catheters to reduce biofilm formation in ventilator patients.
OBJECTIVES To investigate the effectiveness of mechanical cleaning with sterile urethral catheters to prevent formation of biofilms on endotracheal tubes. METHODS Forty-five children were randomized in equal numbers to endotracheal tube cleaning group for three times a day (group A), twice daily (group B), or to a control group with no endotracheal tube cleaning (group C). Bacterial studies a...
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Light which enters a photomultiplier tube is detected and produces an output signal through the following processes. (1) Light passes through the input window. (2) Light excites the electrons in the photocathode so that photoelectrons are emitted into the vacuum (external photoelectric effect). (3) Photoelectrons are accelerated and focused by the focusing electrode onto the first dynode where ...
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ژورنال
عنوان ژورنال: Journal of Chemical Education
سال: 1979
ISSN: 0021-9584,1938-1328
DOI: 10.1021/ed056p768.5