Results 101 to 110 of about 1,768,391 (280)
Combined Metasurface and Metamaterial Passive Transmit Lens and Receive Array for 3 T
Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose Metasurfaces (MSs) and metamaterials (MMs) can reduce transmit field nulls caused by wavelength effects at higher MR field strengths. We present a layered MM and MS resonant structure that improves transmit field performance when used as a combined slab (i.e., the metaslab), while also operating as a receive array.
Adam M. Maunder +4 more
wiley +1 more source
Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose To develop a method for enhanced quantification of hyperpolarized chemical exchange saturation transfer (HyperCEST) using singular value decomposition (SVD) for both spectroscopy and molecular imaging. Methods Dynamic HyperCEST spectra acquired with cucurbit[6]uril (CB[6]) and resorcinarene trimer methanesulfonate (R3‐Noria‐MeSO3H) in ...
Yurii Shepelytskyi +4 more
wiley +1 more source
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT Classical Zero Vibration (ZV) and Zero Vibration and Derivative (ZVD) input shapers are designed around a fixed nominal natural frequency and cannot accommodate the time‐varying dynamics introduced when an overhead crane simultaneously travels and hoists a payload.
Mohammad Alfares, Khaled Alhazza
wiley +1 more source
, 2013 Vibratory micro-machined gyroscopes utilize Coriolis force to detect the rotation rate. Recently it has been proved that embedding the gyroscope in an electromechanical ΣΔ modulator (EMSDM), results in increased linearity, rate detection range, and ...
Salimi, Pejwaak
core +1 more source
Differential Quadrature and Differential Transformation Methods in Buckling Analysis of Nanobeams
Curved and Layered Structures, 2019 In this paper, two computationally efficient techniques viz. Differential Quadrature Method (DQM) and Differential Transformation Method (DTM) have been used for buckling analysis of Euler-Bernoulli nanobeam incorporation with the nonlocal theory of ...
Jena Subrat Kumar, Chakraverty S.
doaj +1 more source
Near Surface Geophysics, EarlyView.Abstract This study focuses on characterising a strong and unexpected anomaly observed during an electromagnetic induction (EMI) survey conducted on the chalk cliff plateau at Sainte‐Marguerite‐sur‐Mer, in the Normandy region, France. The site was selected for a long‐term study of chalk cliff coastal erosion that began in 2017 and has been studied for ...
Sarah Thuillier +3 more
wiley +1 more source
Thermodynamics and Entropy Loss in Nanoconfined Chain Polymerization
Journal of Polymer Science, EarlyView.The difference in the entropy change on propagation in nanoconfined and bulk free‐radical polymerizations is 1–2 orders of magnitude larger than the conformational entropy lost in confined SAW simulations. The experimental confinement entropy is also super‐extensive in chain length scaling, suggesting that the difference between experiments and ...
Qian Tian +5 more
wiley +1 more source
Multiscale numerical sensitivity simulations of a mesoscale gravity‐wave event
Quarterly Journal of the Royal Meteorological Society, EarlyView.High‐resolution WRF simulations of the February 14–15, 1992 STORM‐FEST event show that mesoscale gravity‐wave genesis occurs via geostrophic adjustment within an upper‐level unbalanced jet, while wave ducting governs maintenance. High‐resolution (1 km), improved physical parameterization, and targeted sensitivity simulations demonstrate that upstream ...
Rajan Bhandari +2 more
wiley +1 more source
On the numerical solutions of some Volterra equations on infinite intervals
Journal of Numerical Analysis and Approximation Theory, 1976 The paper discusses long time behavior and error bounds for discretized Volterra equations. A key property is positivity of the quadrature which is combined with monotonicity properties of the nonlinearities in the equations.
Olavi Nevanlinna
doaj +2 more sources
Progressive emergence of canopy gravity waves during the afternoon–evening transition
Quarterly Journal of the Royal Meteorological Society, EarlyView.Large‐eddy simulations are used to investigate the afternoon‐to‐evening transition of turbulence over a forest canopy and its coupling with atmospheric boundary‐layer dynamics. As surface cooling strengthens stability and weakens near‐canopy winds, canopy turbulence transitions progressively to internal gravity waves that dominate the evening flow ...
S. Dupont
wiley +1 more source