Articles with "concave convex" as a keyword



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Dual/Triple Template‐Induced Evolved Emulsion for Controllable Construction of Anisotropic Carbon Nanoparticles from Concave to Convex

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Published in 2023 at "Advanced Materials"

DOI: 10.1002/adma.202210963

Abstract: Anisotropic mesoporous carbon (AMC) nanoparticles with asymmetric external morphologies, topological internal structure, and superior performance of carbon species are attracting great attention because of their seductive features differentiating them from symmetric nanoparticles. However, a bewildering… read more here.

Keywords: carbon; structure; dual triple; concave convex ... See more keywords
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3D fabrication of spherical microlens arrays on concave and convex silica surfaces

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Published in 2019 at "Microsystem Technologies"

DOI: 10.1007/s00542-018-3971-6

Abstract: Three-dimensional (3D) microlens arrays are a group of micro-optics structures on curved surfaces that offer unique optical functions such as wide field of view in a compact arrangement. This paper reports an improved rapid lapping… read more here.

Keywords: micro wear; silica; microlens arrays; spherical microlens ... See more keywords
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Analytical solution for solute transport from a pulse point source along a medium having concave/convex spatial dispersivity within fractal and Euclidean framework

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Published in 2019 at "Journal of Earth System Science"

DOI: 10.1007/s12040-019-1231-5

Abstract: In the present study, analytical solutions of the advection dispersion equation (ADE) with spatially dependent concave and convex dispersivity are obtained within the fractal and the Euclidean frameworks by using the extended Fourier series method.… read more here.

Keywords: framework; source; dispersivity; fractal euclidean ... See more keywords
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Effects of concave and convex substrate curvature on cell mechanics and the cytoskeleton

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Published in 2017 at "Chinese Chemical Letters"

DOI: 10.1016/j.cclet.2016.10.039

Abstract: Abstract In order to understand how cells respond to concave and convex subcellular surface structures, colloidal crystal array and honeycomb-structured surfaces composed of highly ordered hexagonal units with completely inverse curvature were fabricated via facile… read more here.

Keywords: mechanics; surface; curvature cell; concave convex ... See more keywords
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Concave-convex surface oxide layers over copper nanowires boost electrochemical nitrate-to-ammonia conversion

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Published in 2021 at "Chemical Engineering Journal"

DOI: 10.1016/j.cej.2021.130759

Abstract: Abstract The room-temperature nitrate electroreduction to ammonia recycles the fixed nitrogen and offers an appealing ammonia-synthesis scenario. Electrocatalyst engineering is of vital importance to accelerate the reaction kinetics and increase the product selectivity during nitrate… read more here.

Keywords: concave convex; nitrate ammonia; surface; convex surface ... See more keywords
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Thresholds for shock formation in traffic flow models with nonlocal-concave-convex flux

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Published in 2019 at "Journal of Differential Equations"

DOI: 10.1016/j.jde.2018.07.048

Abstract: Abstract We identify sub-thresholds for finite time shock formation in a class of non-local conservation law with concavity changing flux. From a class of non-local conservation laws, the Riccati-type ODE system that governs a solution's… read more here.

Keywords: concave convex; models nonlocal; flow models; shock formation ... See more keywords
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On a Dirichlet problem with (p,q)-Laplacian and parametric concave-convex nonlinearity

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Published in 2019 at "Journal of Mathematical Analysis and Applications"

DOI: 10.1016/j.jmaa.2019.03.006

Abstract: Abstract A homogeneous Dirichlet problem with ( p , q ) -Laplace differential operator and reaction given by a parametric p-convex term plus a q-concave one is investigated. A bifurcation-type result, describing changes in the… read more here.

Keywords: laplacian parametric; concave convex; problem; parametric concave ... See more keywords
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Nodal solutions for Schrödinger-Poisson systems with concave-convex nonlinearities

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Published in 2021 at "Journal of Mathematical Analysis and Applications"

DOI: 10.1016/j.jmaa.2021.125006

Abstract: Abstract In this paper, we study the existence of nodal solutions for the Schrodinger-Poisson systems with concave-convex nonlinearities (0.1) { − Δ u + ϕ u = λ | u | p − 2 u… read more here.

Keywords: concave convex; systems concave; solutions schr; nodal solutions ... See more keywords
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Schrödinger-Poisson system with concave-convex nonlinearities

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Published in 2019 at "Journal of Mathematical Physics"

DOI: 10.1063/1.5087490

Abstract: We consider a class of the Schrodinger-Poisson system with concave-convex nonlinearities. Under some suitable assumptions, we prove the existence of nontrivial solutions and infinitely many negative energy solutions by using the variational method and making… read more here.

Keywords: poisson system; concave convex; system concave; convex nonlinearities ... See more keywords
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Analysis of sagittal spinal alignment at the adolescent age: for furniture design.

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Published in 2022 at "Ergonomics"

DOI: 10.1080/00140139.2022.2152491

Abstract: Knowledge of the parameters of the human spine is essential in designing ergonomic furniture. The purpose of this study was to evaluate spinal alignment in adolescents of various ages. The lengths, curvatures, and concave-convex spacings… read more here.

Keywords: spinal alignment; concave convex; age; spine ... See more keywords
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Pairwise Matching for 3D Fragment Reassembly Based on Boundary Curves and Concave-Convex Patches

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Published in 2020 at "IEEE Access"

DOI: 10.1109/access.2019.2961391

Abstract: We present a simple pairwise matching method for 3D fragment reassembly that uses boundary curves and concave-convex patches to accelerate and optimize the matching. Given the boundary curves of two fracture surfaces that completely or… read more here.

Keywords: boundary curves; concave convex; pairwise matching; convex patches ... See more keywords