Results 31 to 40 of about 274,938 (293)

A 2D ultrasonic array design incorporating hexagonal-shaped elements for NDE applications [PDF]

open access: yes, 2010
Contemporary 2D Ultrasonic arrays suffer from low SNR and limited steering capabilities. Yet, there is a great desire in the industry to increase the operational frequency, in order to enhance their volumetric imaging resolution.
Dziewierz, J.   +4 more
core   +1 more source

Separation of Parallel Encoded Complex-Valued Slices (SPECS) From A Single Complex-Valued Aliased Coil Image [PDF]

open access: yes, 2016
Purpose Achieving a reduction in scan time with minimal inter-slice signal leakage is one of the significant obstacles in parallel MR imaging. In fMRI, multiband-imaging techniques accelerate data acquisition by simultaneously magnetizing the spatial ...
Bruce, Iain P.   +4 more
core   +2 more sources

One-Dimensional Beam Scanning Transmitarray Lens Antenna Fed by Microstrip Linear Array

open access: yesIEEE Access, 2019
This paper proposed a one-dimensional beam scanning transmitarray lens antenna fed by a microstrip linear array antenna which owns a wide pattern in the plane orthogonal to the array axis and a narrow pattern in the plane that includes the array axis ...
Na Kou   +3 more
doaj   +1 more source

Optimizing the process parameters of Fiction Stir Welded dissimilar 2024Al-5754Al Joint using the Taguchi Method [PDF]

open access: yesMATEC Web of Conferences, 2023
It is a requirement of modern age industries, especially the aerospace, automobile, and shipbuilding sectors, to manufacture high strength and low weight dissimilar aluminium alloy welded joints.
Haider Feroz   +2 more
doaj   +1 more source

Efficient orthogonal control of tunnel couplings in a quantum dot array

open access: yes, 2020
Electrostatically-defined semiconductor quantum dot arrays offer a promising platform for quantum computation and quantum simulation. However, crosstalk of gate voltages to dot potentials and inter-dot tunnel couplings complicates the tuning of the ...
Hsiao, T. -K.   +5 more
core   +1 more source

A novel technique for wide-field polarimetry with a radiotelescope array [PDF]

open access: yes, 2005
We report the use of the Australia Telescope Compact Array (ATCA) to conduct polarimetric observations of the sky at 5 GHz. The ATCA is normally operated as an interferometer array, but these observations were conducted in a split array mode in which the
Carretti, E.   +2 more
core   +3 more sources

Experimental Investigation of Friction Stir Welding on 6061-T6 Aluminum Alloy using Taguchi-Based GRA

open access: yesMetals, 2020
The use of aluminum alloys, nowadays, is swiftly growing from the prerequisite of producing higher strength to weight ratio. Lightweight components are crucial interest in most manufacturing sectors, especially in transportation, aviation, maritime ...
Assefa Asmare   +2 more
doaj   +1 more source

The development of a position-sensitive CZT detector with orthogonal co-planar anode strips [PDF]

open access: yes, 2000
We report on the simulation, construction, and performance of prototype CdZnTe imaging detectors with orthogonal coplanar anode strips. These detectors employ a novel electrode geometry with non-collecting anode strips in one dimension and collecting ...
Hamel, L A   +7 more
core   +2 more sources

Preparation of Palm Oil Ash Nanoparticles: Taguchi Optimization Method by Particle Size Distribution and Morphological Studies

open access: yesApplied Sciences, 2020
The interest in the utilization of palm oil ash is high, mainly due to their renewable material, opportunity to enhance the properties and possibility to use in a wide range of applications. Palm oil ash is the by-product of the palm oil mill boilers and
Samsul Rizal   +6 more
doaj   +1 more source

Instability waves in a subsonic round jet detected using a near-field phased microphone array [PDF]

open access: yes, 2006
We propose a diagnostic technique to detect instability waves in a subsonic round jet using a phased microphone array. The detection algorithm is analogous to the beam-forming technique, which is typically used with a far-field microphone array to ...
Colonius, Tim, Suzuki, Takao
core   +2 more sources

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