منابع مشابه
Modified Beaver respirator: the application of negative phase.
THAT intermittent positive pressure may adversely affect the circulation under certain circumstances, notably when there is hypovolaemia, is widely recognized (Maloney and Handford, 1953; Brecher, 1956) and with many automatic ventilators it is possible to provide a degree of "negative pressure" during the expiratory phase to combat this tendency to circulatory depression. Many of these machine...
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A 60-year-old woman with a congenital solitary right kidney presented with 1 month history of right flank pain associated with hematuria and urinary tract infection (UTI) symptoms. A Computed tomography (CT) was done in view of the precious kidney, and revealed features suggestive of right obstructive uropathy with pyelonephritis; for which appropriate treatment was subsequently instituted. Inc...
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This study examined the association of facial dimensions with respirator fit considering the effect of gender and respirator brand. Forty-one subjects (20 white females and 21 white males) participated in the study. Each subject was measured for 12 facial dimensions using anthropometric sliding and spreading calipers and a steel measuring tape. Three quantitative fit tests were conducted with t...
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We evaluated correctness of N95 filtering facepiece respirator donning by the public in post-hurricane New Orleans, where respirators were recommended for mold remediation. We randomly selected, interviewed, and observed 538 participants, using multiple logistic regression for analysis. Only 129 (24%) participants demonstrated proper donning. Errors included nose clip not tightened (71%) and st...
متن کاملAttacking the Busy Beaver 5
Since T. Rado in 1962 defined the busy beaver game several approaches have used computer technology to search busy beavers or even compute special values of Σ. Σ(5) is not yet known. A new approach to the computation of Σ(5) is presented, together with preliminary results, especially Σ(5)≥4098. This approach includes techniques to reduce the number of inspected Turing machines, to accelerate si...
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ژورنال
عنوان ژورنال: British Journal of Anaesthesia
سال: 1957
ISSN: 0007-0912
DOI: 10.1093/bja/29.4.183