Results 131 to 140 of about 3,838,081 (296)

O Atomo de hidrogênio

open access: yesSemina: Ciências Sociais e Humanas, 1979
The problem of hydrogen atom is discussed here. Firstly the solution is presented without considering the spin of the interacting particles; secondly it is presented a momentum-space solution for this problem. It is also discussed, the connection between
Marcos de Castro Falleiros   +1 more
doaj  

Existence of non-radial solutions of an elliptic system

open access: yesApplied Mathematics Letters, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Model‐Guided Design of Paper Membrane Architectures for Controlled Flow and Enhanced Diagnostic Sensitivity

open access: yesAdvanced Engineering Materials, EarlyView.
Geometrical modifications on nitrocellulose membranes can result in observable differences in signal intensity relative to a reference membrane (top and bottom left). Using two reference experiments, we have developed a theoretical model that can reproduce the experimentally observed flow changes and provide information on membrane parameters, e.g ...
Maria Dimaki   +2 more
wiley   +1 more source

Multiplicity and symmetry breaking for positive radial solutions of semilinear elliptic equations modelling MEMS on annular domains

open access: yesElectronic Journal of Differential Equations, 2005
The use of electrostatic forces to provide actuation is a method of central importance in microelectromechanical system (MEMS) and in nanoelectromechanical systems (NEMS).
Peng Feng, Zhengfang Zhou
doaj  

A Radial Memetic Algorithm to Resolve the No-Wait Job-Shop Scheduling Problem

open access: yesMathematics
A new radial memetic algorithm is proposed to resolve the no-wait job-shop scheduling problem. Basically, each sequencing solution is factorized as a distance-based ranking model, i.e., each solution is decomposed in n − 1 terms, where n is the number of
Ricardo Pérez-Rodríguez
doaj   +1 more source

Architecture‐Driven Sensor Stability in Weft‐Knitted Engineering Textiles

open access: yesAdvanced Engineering Materials, EarlyView.
Textile‐integrated sensor architectures are systematically compared to evaluate their electromechanical behavior under combined mechanical and environmental loading. Pocket‐based integration exhibits stable and reproducible signals, whereas tunnel‐based routing shows higher sensitivity accompanied by increased variability.
Adnan Maroof Khan   +5 more
wiley   +1 more source

An alternative approach to critical PDEs

open access: yesElectronic Journal of Differential Equations, 2017
In this article, we use an alternative method to prove the existence of an infinite sequence of distinct non-radial nodal G-invariant solutions for critical nonlinear elliptic problems defined in the whole the Euclidean space.
Nikos Labropoulos
doaj  

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

open access: yesAdvanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

Discrepancies Between Micro Versus Macroscale Viscoelastic Properties in a Microplastic‐Tissue Composite Model

open access: yesAdvanced Engineering Materials, EarlyView.
This study explores the discrepancies between bulk mechanics and spatial mapping in a tissue‐mimetic hydrogel model. Microplastic particles create localized stiff mechanical microenvironments that are detectable by cellular‐scale nanoindentation but leave bulk properties unchanged as measured by rheology.
Ahron T. Verschleisser   +3 more
wiley   +1 more source

An ALE based hybrid meshfree local RBF-cartesian FD scheme for incompressible flow around moving boundaries

open access: yes
A solution scheme is presented to simulate incompressible viscous flow around moving boundaries using hybrid meshfree-Cartesian grid. The presented solution approach avoids intensive re-meshing and enhances computational efficiency by combining the ...
Djidjeli, K, Xing, J.T., Javed, A.
core   +1 more source

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