23,022 research outputs found
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Coming home: demobilization, trauma and postwar readjustment in late Stalinist Leningrad
Wilder, Brand, Chester, Osborne, and Seifrid\u27s Perspectives on Our Struggle with Sin: Three Views of Romans 7 (Book Review)
A Review of
Perspectives on Our Struggle with Sin: Three Views of Romans 7, By Terry L. Wilder, Chad Brand, Stephen Chester, Grant R. Osborne, and Mark Seifrid. Nashville, TN: B&H Academic, 2011. 213 pp. $24.99. ISBN 9780805447910
Keener\u27s Spirit hermeneutics: Reading scripture in the light of Pentecost (Book Review)
A review of Keener, C. S. (2016). Spirit hermeneutics: Reading scripture in the light of Pentecost. Grand Rapids, MI: Wm. B. Eerdmans. 522 pp. ISBN 978080287439
Spine Biomechanics Associated with the Shortened, Modern One-Plane Golf Swing
The purpose of this study was to compare kinetic, kinematic, and performance variables associated with full and shortened modern backswings in a skilled group of modern swing (one-plane) golfers. Shortening the modern golf backswing is proposed to reduce vertebral spine stress, but supporting evidence is lacking and performance implications are unknown. Thirteen male golfers performed ten swings of each swing type using their own 7-iron club. Biomechanical-dependent variables included the X-Factor kinematic data and spine kinetics. Performance-related dependent variables included club head velocity (CHV), shot distance, and accuracy (distance from the target line). Data were analysed with repeated measures ANOVA with an a priori alpha of 0.05 (SPSS 22.0, IBM, Armonk, NY, USA). We found significant reductions for the X-Factor (p \u3c 0.05) between the full and shortened swings. The shortened swing condition ameliorated vertebral compression force from 7.6 ± 1.4 to 7.0 ± 1.7 N (normalised to body weight, p = 0.01) and significantly reduced CHV (p \u3c 0.05) by ~2 m/s with concomitant shot distance diminution by ~10 m (p \u3c 0.05). Further research is necessary to examine the applicability of a shortened swing for golfers with low back pain
CO2-dependent opening of an inwardly rectifying K+ channel
CO2 chemosensing is a vital function for the
maintenance of life that helps to control acidâbase balance.
Most studies have reported that CO2 is measured via its
proxy, pH. Here we report an inwardly rectifying channel,
in outside-out excised patches from HeLa cells that was
sensitive to modest changes in PCO2 under conditions of
constant extracellular pH. As PCO2 increased, the open
probability of the channel increased. The single-channel
currents had a conductance of 6.7 pS and a reversal
potential of â70 mV, which lay between the K+ and Clâ
equilibrium potentials. This reversal potential was shifted
by +61 mV following a tenfold increase in extracellular
[K+] but was insensitive to variations of extracellular [Clâ].
The single-channel conductance increased with extracellular
[K+]. We propose that this channel is a member of the
Kir family. In addition to this K+ channel, we found that
many of the excised patches also contained a conductance
carried via a Clâ-selective channel. This CO2-sensitive Kir
channel may hyperpolarize excitable cells and provides a
potential mechanism for CO2-dependent inhibition during
hypercapnia
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