Results 101 to 110 of about 6,537 (288)

Estabilização uniforme de soluções de equações diferenciais parciais de evolução [PDF]

, 2000
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas.: Nesta dissertação estudamos e aplicamos algumas técnicas de estabilização de soluções para equações diferenciais parciais de evolução.
Massarolo, Claiton Petris
core  

Transport theory within a generalized Boltzmann equation for multiband wave packets

Physical Review Research, 2020
A generalized theory for transport under applied electrochemical potential and temperature gradients that includes multiband effects is presented.
T. Stedman, L. M. Woods
doaj   +1 more source

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

Advanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran, Vincent Nebel, Dominik Perius, Kshitij Kumar, Yannis Heim, Laura Bies, Tobias Kraus   +6 more
wiley   +1 more source

From Shear to Sound: Mechanics–Acoustics Mapping of TPMS Lattices

Advanced Engineering Materials, EarlyView.
Triply periodic minimal surface (TPMS) lattices are mapped across mechanical and acoustic performance, revealing that descriptors validated in compression fail under shear. First‐time comparison with trusses included. A transition from porous to resonance‐driven absorption emerges at 25% density.
Lucía Doyle, María Ángeles Navacerrada, Johan Christensen, Carlos González   +3 more
wiley   +1 more source

Phonons with orbital angular momentum in ultrarelativistic dense plasmas

AIP Advances
Studying phonon modes with orbital angular momentum (OAM) in ultra-relativistic dense plasmas provides new insights into wave dynamics under extreme conditions.
Imtiaz Hussain, Ata-ur-Rahman, Sheraz Khan, Hanan Al-Ghamdi, B. B. Mouhammadoul, Samir A. El-Tantawy   +5 more
doaj   +1 more source

Travelling wave solutions of the degenerate Kolmogorov–Petrovski–Piskunov equation

European Journal of Applied Mathematics, 2003
The authors study the asymptotic behaviour of solutions of the initial value problem for a degenerate parabolic equation \[ {\partial u\over\partial t}={\partial^2\over \partial x^2} \varphi(u)+ \psi(u) \] in \(\{(x,t)\mid x\in\mathbb{R},\;0\leq ...
Medvedev, G. S., Ono, K., Holmes, P. J.
openaire   +1 more source

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

Advanced Engineering Materials, EarlyView.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele, Hossein Ipakchi, Tizazu H. Mekonnen   +2 more
wiley   +1 more source

Precipitation Simulations of the O‐Phase in Ti2AlNb Alloys Processed by Laser Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Simulated and experimental evolution of the O‐phase volume fraction during postprocessing of a Ti‐21Al‐25Nb (at.%) alloy processed by laser powder bed fusion. With results of sensitivity to input parameters from a thorough and quantified analysis, the interfacial energy matrix/precipitate is the most relevant input parameter for the simulation of the O‐
Silvana Tumminello, Joachim Gussone, Suzana G. Fries, Marcus Rackel, Andreas Stark, Norbert Schell, Jan Haubrich, Guillermo Requena   +7 more
wiley   +1 more source

Stabilization for a degenerate wave equation with drift and potential term with boundary fractional derivative control [PDF]

This paper explores the boundary stabilization of a degenerate wave equation in the nondivergence form, which includes a drift term and a singular potential term.
Issa, Ibtissam, Hajjej, Zayd
core   +1 more source

Microstructure, Thermal Transport, and Dry‐Sliding Tribology of Powder‐Metallurgy Al7075 Composites Reinforced With Sol–Gel‐Derived ZnO–rGO Hybrid Nanoparticles

Advanced Engineering Materials, EarlyView.
Sol–gel‐derived ZnO–rGO hybrid nanoparticles enable Al7075 powder‐metallurgy composites to achieve concurrent gains in hardness and thermal conductivity while markedly lowering friction and wear. The hybrid architecture couples ZnO‐based load support with rGO‐assisted lamellar sliding and heat spreading, revealing a promising route toward lightweight ...
Bunyamin Aksakal, Cevher Kursat Macit, Merve Ayık, Hakan Tutumlu   +3 more
wiley   +1 more source