Results 51 to 60 of about 201,464 (300)
Where to place a spherical obstacle so as to maximize the second Dirichlet eigenvalue [PDF]
, 2007 We prove that among all doubly connected domains of $\mathbb{R}^n$ bounded by two spheres of given radii, the second eigenvalue of the Dirichlet Laplacian achieves its maximum when the spheres are concentric (spherical shell).
Kiwan, Rola, Soufi, Ahmad El
core +2 more sources
Concentration inequalities for Paley–Wiener spaces
Pacific Journal of MathematicsThis article considers the question of how much of the mass of an element in a Paley-Wiener space can be concentracted on a given set. We seek bounds in terms of relative densities of the given set. We extend a result of Donoho and Logan from 1992 in one dimension and consider similar results in higher dimensions.
Husain, Syed, Littmann, Friedrich
openaire +3 more sources
Bimetallic Nanoparticles as Cocatalysts for Photocatalytic Hydrogen Production
Advanced Functional Materials, EarlyView.Recent developments have introduced bimetallic nanoparticles as effective cocatalysts for photocatalytic systems. This review explores the rapidly expanding research on bimetallic cocatalysts for photocatalytic production of hydrogen, emphasizing the creation of carrier‐selective contacts, localized surface plasmon resonance effects, methodologies for ...
Yufen Chen +4 more
wiley +1 more source
Land, 2022 As populations continue to be concentrated in cities, the world will become entirely urbanized, and urban space is undergoing a drastic evolution. Understanding the spatial pattern of conversion and expansion of functional urban land, in the context of ...
Guolei Zhou +3 more
doaj +1 more source
Patterned probes for high precision 4D-STEM bragg measurements. [PDF]
, 2019 Nanoscale strain mapping by four-dimensional scanning transmission electron microscopy (4D-STEM) relies on determining the precise locations of Bragg-scattered electrons in a sequence of diffraction patterns, a task which is complicated by dynamical ...
Bustillo, Karen C +6 more
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Advanced Functional Materials, EarlyView.This study introduces a novel multi‐scale scaffold design using L‐fractals arranged in Archimedean tessellations for tissue regeneration. Despite similar porosity, tiles display vastly different tensile responses (1–100 MPa) and deformation modes. In vitro experiments with hMSCs show geometry‐dependent growth and activity. Over 55 000 tile combinations
Maria Kalogeropoulou +4 more
wiley +1 more source
IEEE AccessAs the wide application of power electronics devices, supply containing low-order harmonic becomes more and more common in industry. It may cause the significant vibration of induction motors (IMs). This study firstly analyzed the time-space distribution
Xuandong Wu +4 more
doaj +1 more source
International Journal of Mathematics and Mathematical Sciences, 2000 This paper is concerned with periodic traveling wave solutions of the forced generalized nearly concentric Korteweg-de Vries equation in the form of (uη+u/(2η)+[f(u)]ξ+uξξξ)ξ+uθθ/η2=h0.
Kenneth L. Jones +2 more
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Balo's concentric sclerosis: a clinical case
Неврология, нейропсихиатрия, психосоматика, 2018 This paper describes a case of Balo's concentric sclerosis, a rare demyelinating disease of the central nervous system (CNS), which is currently classified as multiple sclerosis.
I. V. Litvinenko +6 more
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The equations of medieval cosmology
, 2008 In Dantean cosmography the Universe is described as a series of concentric spheres with all the known planets embedded in their rotation motion, the Earth located at the centre and Lucifer at the centre of the Earth.
Buonanno, Roberto, Quercellini, Claudia
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