Results 211 to 220 of about 9,419,615 (268)
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A positive positive to negative
Nature Chemistry, 2018The structure of an antibiotic that is effective against Gram-positive bacteria, but not against Gram-negative bacteria, has now been modified to improve its effectiveness against Gram-negative bacteria. The approach could help broaden the spectrum of activity of other antibiotics.
Jed F, Fisher, Shahriar, Mobashery
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Percutaneous nephrolithotomy: position, position, position!
Urolithiasis, 2017Percutaneous nephrolithotomy (PCNL) is the regular surgery for treating large or complex renal stones. Since its first inception, many variations have come in the approach including the modifications of patient position. The prone position is traditionally used, and subsequently, variations in prone and supine technique have been proposed and assessed ...
Zhijian, Zhao +4 more
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Positive Powers of Positive Positive Definite Matrices
Canadian Journal of Mathematics, 1996AbstractLet C be an n x n positive definite matrix. If C ≥ 0 in the sense that Cij ≥ 0 and if p > n — 2, then Cp ≥ 0. This implies the following "positive minorant property" for the norms ‖A‖p = [tr(A*A)p/2]1/P. Let 2 < p ≠ 4, 6, … . Then 0 ≤ A ≤ B => ‖A‖p ≥ ‖B‖P if and only if n < p/2 + 1.
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Psychological Assessment, 2012
Five studies document the validity of a new 8-item scale designed to measure positivity, defined as the tendency to view life and experiences with a positive outlook. In the first study (N = 372), the psychometric properties of Positivity Scale (P Scale) were examined in accordance with classical test theory using a large number of college participants.
CAPRARA, Gian Vittorio +8 more
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Five studies document the validity of a new 8-item scale designed to measure positivity, defined as the tendency to view life and experiences with a positive outlook. In the first study (N = 372), the psychometric properties of Positivity Scale (P Scale) were examined in accordance with classical test theory using a large number of college participants.
CAPRARA, Gian Vittorio +8 more
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Restraint Position and Positional Asphyxia
Annals of Emergency Medicine, 1997To determine whether the "hobble" or "hog-tie" restraint position results in clinically relevant respiratory dysfunction.This was an experimental, crossover, controlled trial at a university-based pulmonary function laboratory involving 15 healthy men ages 18 through 40 years.
T C, Chan +3 more
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Living Positively as HIV Positive
Journal of Christian Nursing, 2011A nursing student records a brief biography of a Zambian nurse and certified midwife living with HIV/AIDS while shadowing the nurse during an undergraduate cross-cultural course in Macha, Zambia in January 2009. The nurse strives to live positively, educating, encouraging, and empowering others.
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