Results 21 to 30 of about 946,560 (297)

Theory of Chronoamperometry at Cylindrical Microelectrodes and Their Arrays

open access: yesThe Journal of Physical Chemistry C, 2008
Potential step chronoamperometry at cylindrical electrodes is modeled using the finite difference method in a two-dimensional (2D) simulation space. Trends are discussed in terms of the cylinder height-to-radius ratio Ze for top-only, side-only, and fully conducting cylinders.
Dickinson, E, Streeter, I, Compton, R
openaire   +1 more source

High Accuracy 2D-DOA Estimation for Conformal Array Using PARAFAC

open access: yesInternational Journal of Antennas and Propagation, 2014
Due to the polarization diversity (PD) of element patterns caused by the varying curvature of the conformal carrier, the conventional direction-of-arrival (DOA) estimation algorithms could not be applied to the conformal array.
Liangtian Wan   +4 more
doaj   +1 more source

Behavior of Cylindrical Steel Shells Supported on Local Brackets [PDF]

open access: yes, 2008
: The connection of a local support to an elevated cylindrical metal silo shell is a long-standing difficult problem in shell analysis, and most designs are based on simple ideas using past experiences of successes and failures.
Cornelia , Doerich, J. Michael , Rotter
core   +1 more source

Optimisation of a Horizontal Capsule Transporting Pipeline carrying Cylindrical Capsules [PDF]

open access: yes, 2012
Pipelines carrying fluids and slurries are quite common. The third-generation pipelines carrying spherical or cylindrical capsules (hollow containers) filled with minerals or other materials including hazardous liquids are rather a new concept.
Ubbi, Kuldip   +4 more
core   +1 more source

A wideband cylindrical conformal microstrip mimo antenna array

open access: yesElectronics Letters, 2023
In this paper, a wideband cylindrical conformal microstrip antenna array employing a proximity‐coupled feeding mechanism with a cavity‐backed configuration is designed and fabricated.
Song‐Song Qian   +5 more
doaj   +1 more source

Limitations of Surface Current Model of Magnetic Field and a Remedy

open access: yesIEEE Access, 2022
It is well known that any realistic static magnetic field in a source-free volume can be generated by electric currents on a surface enclosing the volume.
Youngseob Seo, Zhiyue J. Wang
doaj   +1 more source

Nearfield Cavitation for a Cylindrical Array [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1970
Computer calculations were done for the near- and farfields of a cylindrical transducer array of 192 elements. Calculations were done for four different beam depression angles; for each beam depression angle, 12 different phasing sets were used; the sets corresponded to various percentages (0% to 180%) of the phases required to phase the array to a ...
openaire   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal   +2 more
wiley   +1 more source

Near-Field Millimeter-Wave Imaging via Multi-Plane MIMO Arrays

open access: yesIEEE Access, 2023
Multiple-input multiple-output (MIMO) array-based millimeter-wave (MMW) imaging has broad application prospects in concealed weapons detection due to its capability of high resolution at a reasonable cost.
Guangnan Xing   +4 more
doaj   +1 more source

Symmetry‐Guided Multifunctional Acoustic System Based on Mechanically Actuated Sonic Crystals

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents the design, simulation, and experimental validation of amultifunctional acoustic metamaterial based on rotationally engineered sonic crystals.By tuning cylinder orientations, controllable band gaps and six distinct functionalities—including switching, topological insulation, beam splitting, and logic operations—areachieved ...
Yuanyan Zhao   +2 more
wiley   +1 more source

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