Results 131 to 140 of about 571,229 (299)
Predicting Trade Expansion under FTAs and Multilateral Agreements [PDF]
This paper examines the historical record of eight recent free trade agreements (FTAs). It also investigates the predictive power of two popular quantitative world trade models—the single-equation gravity model and the multiequation comput-able general ...
Dean A. DeRosa, John P. Gilbert
core
Synchronization‐Dissipation in the Cardiorespiratory System
Advanced Science, EarlyView.By modeling central nervous coupling and viscoelastic interactions in the cardiorespiratory system we show that synchronization produces a 10% gain in cardiac efficiency in humans. It is surmised that respiratory sinus arrhythmia improves cardiac pumping efficiency by reducing dynamic stress and power dissipation in the pulmonary vasculature.
Joshua R. Border +3 more
wiley +1 more source
AerospaceThe aim of the present work is the improvement of a free-wake model for the analysis of a small-scale two-bladed propeller in hover. The simulations are carried out using a BEM approach implemented in the medium-fidelity solver RAMSYS.
Manuel Iannotta +5 more
doaj +1 more source
Numerical simulation and comparison of symmetrical/supercritical airfoils for the near tip region of a helicopter in forward flight [PDF]
Aerodynamic loads on a multi-bladed helicopter rotor in forward flight at transonic tip conditions are calculated. The unsteady, three-dimensional, time-accurate compressible Reynolds-averaged thin layer Navier-Stokes equations are solved in a rotating ...
Badavi, F. F.
core +1 more source
Enhanced Correlation of SMART Active Flap Rotor Loads [PDF]
, 2011 This is a follow-on study to a 2010 correlation effort. Measured data from the SMART rotor test in the NASA Ames 40- by 80- Foot Wind Tunnel are compared with CAMRAD II calculations.
Kottapalli, Sesi
core +1 more source
Advanced Science, EarlyView.After spinal cord injury, adult microglia remain persistently activated with chronic PRMT6 (protein arginine methyltransferase 6) upregulation. Prmt6 deficiency or inhibition reestablishes microglial homeostasis and promotes a scar‐limited repairment, enhancing axonal regrowth.
Weilin Peng +9 more
wiley +1 more source
Advanced Science, EarlyView.Current technologies for spinal cord optogenetic stimulation rely on external power sources and face reliability constraints in freely behaving animals. Here, a fully implantable, battery‐powered optoelectronic device is introduced, enabling operation in any selected environment with wireless recharging for months‐long stimulation.
Shahriar Shalileh +8 more
wiley +1 more source
Validity of Viscous Core Correction Models for Self-Induced Velocity Calculations [PDF]
, 2012 Viscous core correction models are used in free wake simulations to remove the infinite velocities at the vortex centreline. It will be shown that the assumption that these corrections converge to the Biot-Savart law in the far field is not correct for ...
Van Hoydonck, Wim, van Tooren, Michel
core
Advanced Science, EarlyView.Biological rhythms coordinate physiology, from genes to behavior. Study of circadian rhythms in brain tissue is constrained by limited throughput and spatial and temporal information quality. A new platform for high‐throughput, long‐term multiplexed fluorescent live imaging of circadian rhythms in brain slices is introduced.
Marco Ferrari +3 more
wiley +1 more source
Numerical Study of Wake Characteristics in a Horizontal-Axis Hydrokinetic Turbine
Anais da Academia Brasileira de CiênciasOver the years most studies on wake characteristics have been devoted to wind turbines, while few works are related to hydrokinetic turbines. Among studies applied to rivers, depth and width are important parameters for a suitable design. In this work, a
PAULO A.S.F. SILVA +3 more
doaj +1 more source