Results 1 to 10 of about 2,660,013 (212)
Seasonality and determinants of child growth velocity and growth deficit in rural southwest Ethiopia [PDF]
BMC Pediatrics, 2018 Background Ethiopia faces cyclic food insecurity that alternates between pre- and post- harvest seasons. Whether seasonal variation in access to food is associated with child growth has not been assessed empirically.
Netsanet Fentahun +3 more
doaj +9 more sources
A Novel Analytical Wake Model with a Cosine-Shaped Velocity Deficit [PDF]
Energies, 2020 A novel analytical model is proposed and validated in this paper to predict the velocity deficit in the wake downwind of a wind turbine. The model is derived by employing mass and momentum conservation and assuming a cosine-shaped distribution for the ...
Ziyu Zhang, Peng Huang, Haocheng Sun
doaj +3 more sources
Percentage-Based Change of Direction Deficit: A New Approach to Standardize Time- and Velocity-Derived Calculations. [PDF]
Journal of Strength & Conditioning Research, 2021 Freitas, TT, Pereira, LA, Alcaraz, PE, Azevedo, PHSM, Bishop, C, and Loturco, I. Percentage-based change of direction deficit: a new approach to standardize time- and velocity-derived calculations.
Tomás T. Freitas +5 more
semanticscholar +3 more sources
Force-velocity properties' contribution to bilateral deficit during ballistic push-off.
Medicine & Science in Sports & Exercise, 2014 The objective of this study is to quantify the contribution of the force-velocity (F-v) properties to bilateral force deficit (BLD) in ballistic lower limb push-off and to relate it to individual F-v mechanical properties of the lower limbs.The F-v relation was individually assessed from mechanical measurements for 14 subjects during maximal ballistic ...
P. Samozino +4 more
semanticscholar +4 more sources
Velocity Deficit and Swirl in the Turbulent Wake of a Wind Turbine
Marine Technology Society Journal, 2013 Energy production data from several of the existing large offshore wind farms indicate that turbine arrays can suffer from a significant overall energy production shortfall, due to wakes generated by turbines upstream interacting with turbines downstream.
N. Dufresne, M. Wosnik
semanticscholar +2 more sources
American Journal of Physiology-Cell Physiology, 1997 We tested the null hypothesis that the severity of injury to single muscle fibers following a single pliometric (lengthening) contraction is not dependent on the velocity of stretch. Each single permeabilized fiber obtained from extensor digitorum longus muscles of rats was maximally activated and then exposed to a single stretch of either 5, 10, or ...
G. Lynch, J. Faulkner
semanticscholar +3 more sources
Vertical and Spanwise Wake Flow Structures of a Single Spire over Smooth Wall Surface in a Wind Tunnel [PDF]
Journal of Applied Fluid Mechanics, 2023 The aerodynamic interaction between the wake flow structure behind a single spire with a smooth wall boundary layer at a long streamwise location was observed in a wind tunnel experiment.
M. A. Fitriady +2 more
doaj +1 more source
Energies, 2022 Turbine-induced velocity deficit is the main reason to reduce wind farm power generation and increase the fatigue loadings. It is meaningful to investigate turbine-induced wake structures by a simple and accurate method. In this study, a series of single
Dongqin Zhang +4 more
semanticscholar +1 more source
Wake of Elongated Low-Rise Building at Oblique Incidences
Atmosphere, 2021 We investigated the turbulent wake of an elongated low-rise building at oblique wind incidence via wind tunnel experiments and numerical simulations. The deflection phenomenon of mean building wake is clearly supported by the downwind trajectory of the ...
Fei Wang, Kit Ming Lam
doaj +1 more source
Numerical simulation of vortices with axial velocity deficits [PDF]
Physics of Fluids, 1995 Axial velocity deficit is a source of instability in vortices that may otherwise be stable. Temporal large-eddy simulation is performed to study the response of vortices with axial velocity deficits to random and controlled disturbances at high Reynolds numbers. The q vortex [Batchelor, J. Fluid Mech. 20, 321 (1964)] is used as a model of such vortices.
Ragab, Saad A., Sreedhar, M.
openaire +3 more sources