Results 41 to 50 of about 134,722 (288)

Existence and Uniqueness of Solutions of Integral Equations for Acoustic Radiation and Diffraction Problems [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1967
Although a radiation or diffraction problem may have a unique solution, certain formulations of the problem may result in integral equations that do not have solutions, or whose solutions are not unique. Typically, when considering the exterior problem, trouble may occur at frequencies corresponding to resonance in the interior of the body.
openaire   +1 more source

When holography meets coherent diffraction imaging [PDF]

open access: yes, 2012
Modern imaging techniques at the molecular scale rely on utilizing novel coherent light sources like X-ray free electron lasers for the ultimate goal of visualizing such objects as individual biomolecules rather than crystals. Here, unlike in the case of
Barakat   +60 more
core   +1 more source

Removing Oxide Layers and Retaining Oxide‐Free Steel Surfaces by Polishing in Oxygen‐Free Atmosphere

open access: yesAdvanced Engineering Materials, EarlyView.
In this study, the efficacy of wet mechanical polishing under an oxygen‐free atmosphere for deoxidation and the retention of an oxide‐free steel surface are elucidated using X‐ray photoelectron spectroscopy. The methodology proved successful; however, the results were highly dependent on the preparation of the solvents used to clean the samples after ...
Friedrich Bürger   +2 more
wiley   +1 more source

Boundary Value Problems for the Helmholtz Equation for a Half-plane with a Lipschitz Inclusion [PDF]

open access: yes, 2018
This paper considers to the problems of diffraction of electromagnetic waves on a half-plane, which has a finite inclusion in the form of a Lipschitz curve. The diffraction problem formulated as boundary value problem for Helmholtz equations and boundary
Lipachev, E.
core   +1 more source

Copper Nanocrystallization in Anodic Oxide Films of Ti–Cu‐Based Bulk Metallic Glass and Its Effect on the Corrosion Resistance and Cytocompatibility

open access: yesAdvanced Engineering Materials, EarlyView.
Viktoriia Shtefan, Thorgund Nemec, Ute Hempel, Annett Gebert and coworkers demonstrate that anodic treatment of Ti–Cu‐based metallic glass in a nontoxic pyrophosphate electrolyte forms a protective bilayered Ti/Zr‐oxide film enriched with Cu nanocrystals.
Viktoriia Shtefan   +8 more
wiley   +1 more source

Solving the complete pseudo-impulsive radiation and diffraction problem using a spectral element method [PDF]

open access: yesComputer Methods in Applied Mechanics and Engineering
21 pages, 11 ...
Jens Visbech   +2 more
openaire   +3 more sources

Quantitative phase Analisis: A comparative study of Mo and Cu strictly monochromatic radiations [PDF]

open access: yes, 2016
A comparison of the Rietveld quantitative phase analyses (RQPA) obtained using Cu-Kα1, Mo-Kα1, and synchrotron strictly monochromatic radiations is presented.
Cuesta-Garcia, Ana Maria   +7 more
core  

An Experimental High‐Throughput Approach for the Screening of Hard Magnet Materials

open access: yesAdvanced Engineering Materials, EarlyView.
An entire workflow for the high‐throughput characterization and analysis of compositionally graded magnetic films is presented. Characterization protocols, data management tools and data analysis approaches are illustrated with test case Sm(Fe, V)12 based films.
William Rigaut   +16 more
wiley   +1 more source

Multi-DOF WEC Performance in Variable Bathymetry Regions Using a Hybrid 3D BEM and Optimization

open access: yesEnergies, 2019
In the present work a hybrid boundary element method is used, in conjunction with a coupled mode model and perfectly matched layer model, for obtaining the solution of the propagation/diffraction/radiation problems of floating bodies in variable ...
Markos Bonovas   +2 more
doaj   +1 more source

REFOS: A Renewable Energy Multi-Purpose Floating Offshore System

open access: yesEnergies, 2021
The present paper deals with the development of a multi-purpose floating tension leg platform (TLP) concept suitable for the combined offshore wind and wave energy resources exploitation, taking into account the prevailing environmental conditions at ...
Dimitrios N. Konispoliatis   +7 more
doaj   +1 more source

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