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Hydraulic performance of a pre-aerated stilling basin: Experimental study.
PLoS One
January 2025
School of Hydraulic Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou, Zhejiang, China.
Spillway chutes are critical in dam flood control, particularly in high dams where high water heads and large discharge in narrow canyons amplify the demand for safe discharging. For large unit discharges in spillways, aeration protection is essential to prevent cavitation erosion, but challenges arise from air duct choking in the traditional spillway and nonaerated regions in the stepped spillway. This paper introduces a novel spillway called the pre-aerated stilling basin spillway (PSBS).
View Article and Find Full Text PDFSelf-Assembly of Particles on a Curved Mesh.
Entropy (Basel)
January 2025
Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università degli Studi di Messina, Viale F. Stagno d'Alcontres 31, 98166 Messina, Italy.
Discrete statistical systems offer a significant advantage over systems defined in the continuum, since they allow for an easier enumeration of microstates. We introduce a lattice-gas model on the vertices of a polyhedron called a pentakis icosidodecahedron and draw its exact phase diagram by the Wang-Landau method. Using different values for the couplings between first-, second-, and third-neighbor particles, we explore various interaction patterns for the model, ranging from softly repulsive to Lennard-Jones-like and SALR.
View Article and Find Full Text PDFFracture resistances of heat-treated nickel-titanium files used for minimally invasive instrumentation.
BMC Oral Health
January 2025
Department of Conservative Dentistry, School of Dentistry, Dental Research Institute, Dental and Life Science Institute, Pusan National University, Yangsan, Korea.
Background: This study compared the torsional resistance, bending stiffness, and cyclic fatigue resistances of different heat-treated NiTi files for minimally invasive instrumentation.
Methods: TruNatomy (TN) and EndoRoad (ER) file systems were compared with ProTaper Gold (PG). Torsional load, distortion angle, and bending stiffness were assessed using a custom device AEndoS, and toughness was calculated using the torsional data.
Entropy stabilized form chirality in curved rod nematics: structure and symmetries.
Soft Matter
January 2025
Department of Materials Science, University of Patras, 26504 Patras, Greece.
Monte Carlo molecular simulations of curve-shaped rods show the propensity of such shapes to polymorphism revealing both smectic and polar nematic phases. The nematic exhibits a nanoscale modulated local structure characterized by a unique, polar, -symmetry axis that tightly spirals generating a mirror-symmetry-breaking organization of the achiral rods-form chirality. A comprehensive characterization of the polarity and its symmetries in the nematic phase confirms that the nanoscale modulation is distinct from the elastic deformations of a uniaxial nematic director in the twist-bend nematic phase.
View Article and Find Full Text PDFPhosphate rebinding induces force reversal via slow backward cycling of cross-bridges.
Front Physiol
January 2025
Institute of Vegetative Physiology, University of Cologne, Köln, Germany.
Objective: Previous studies on muscle fibers, myofibrils, and myosin revealed that the release of inorganic phosphate (P) and the force-generating step(s) are reversible, with cross-bridges also cycling backward through these steps by reversing force-generating steps and rebinding P. The aim was to explore the significance of force redevelopment kinetics (rate constant ) in cardiac myofibrils for the coupling between the P binding induced force reversal and the rate-limiting transition for backward cycling of cross-bridges from force-generating to non-force-generating states.
Methods: and force generation of cardiac myofibrils from guinea pigs were investigated at 0.
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