Results 121 to 130 of about 102,040 (246)

The Influence of Non-Isothermal Conditions on Pressure Head Jumps in the Nonlinear Consolidation Problem in the Presence of Geobarriers

Journal of Optimization, Differential Equations and Their Applications
A nonlinear boundary value problem is considered for a system of parabolic equations in an inhomogeneous region, that requires conjugation conditions.
Olha R. Michuta, Petro M. Martyniuk, Nataliia V. Ivanchuk, Mykhailo V. Boichura   +3 more
doaj   +1 more source

Spatiotemporal Encoding With Nonlinear Gradient Hardware Using Pulseq: From Principles to Practical Demonstration

Magnetic Resonance in Medicine, EarlyView.
Purpose Provide the theoretical foundation and the first practical demonstration of spatiotemporal encoding (SPEN) using additional nonlinear gradient hardware. Methods The quadratic phase profile can be generated either by a chirped‐RF pulse combined with a constant gradient or, directly, by a quadratic gradient pulse.
Andreas Holl, Frank Zijlstra, Maxim Zaitsev, Jakob Hufschmidt, Shadi Tashakori, Nils Schallner, Thomas Stieglitz, Jens Gröbner, Sebastian Littin   +8 more
wiley   +1 more source

Necessary conditions for control of objects with distributed constants

Sistemnì Doslìdženâ ta Informacìjnì Tehnologìï, 2019
Problems of optimal control over objects with distributed constants described by nonlinear differential equations with partial derivatives of elliptic, parabolic and hyperbolic types have been considered.
G. Iovane, V. M. Mizernyy
doaj  

An Improved Mesh Stiffness Model for a Gear Tooth With Double Cracks on Both Sides Considering Opened and Closed States

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Research on the failure mechanisms of gears with multiple cracks has gained widespread attention. Among these, the study of the mesh stiffness characteristics of gears with multiple cracks is crucial for optimizing gear design and improving transmission reliability.
Luyan Xu, Xin Yu, Yunyun Sun
wiley   +1 more source

A novel approach to construct optical solitons solutions of complex Ginzburg–Landau equation with five distinct forms of nonlinearities

Alexandria Engineering Journal
This paper presents a recently introduced innovative approach for analyzing closed-form solutions of nonlinear partial differential equations. While various methods exist for deriving closed-form solutions to many nonlinear evolution equations ...
F. Gassem, Osman Osman, Faez Alqarni, Khaled Aldwoah, Fathea M. Osman Birkea, Manel Hleili   +5 more
doaj   +1 more source

Discrimination of Tryptophan Enantiomers at Sub‐pm Level by Multiparametric Analysis of a Label‐Free Organic Immunosensor

Small Methods, EarlyView.
Multiparametric analysis is a crucial aspect for enhancing the final sensitivity of biosensors based on organic transistors. The traditional approaches to treat the experimental data are not always suitable to extract the correct response. In this work EGOT characteristics are processed to achieve enantiodiscrimination of free Tryptophan enantiomers ...
Matteo Genitoni, Pierpaolo Greco, Alessandro Paradisi, Matteo Sensi, Marcello Berto, Mauro Murgia, Michele Di Lauro, Carlo Augusto Bortolotti, Luciano Fadiga, Fabio Biscarini   +9 more
wiley   +1 more source

On forced periodic solutions of superlinear quasi-parabolic problems

Electronic Journal of Differential Equations, 1998
We study the existence of periodic solutions for a class of quasi-parabolic equations involving the p-Laplacian (or any other nonlinear operators of similar class) perturbed by nonlinear terms and forced by rather irregular periodic in time excitations ...
Jose Luiz Boldrini, Janete Crema
doaj  

A nonlinear parabolic-Sobolev equation

Journal of Mathematical Analysis and Applications, 1975
AbstractLet M and L be (nonlinear) operators in a reflexive Banach space B for which Rg(M + L) = B and ¦(Mx − My) + α(Lx − Ly)¦ ⩾ | mx − My | for all α > 0 and pairs x, y in D(M) ∩ D(L). Then there is a unique solution of the Cauchy problem (Mu(t))′ + Lu(t) = 0, Mu(0) = v0.
openaire   +1 more source

3D Customized Silica‐Based AFM Probes Fabricated by Selective Laser Etching

Small Methods, EarlyView.
Selective laser etching (SLE) enables the monolithic fabrication of customized, fully 3D silica AFM probes integrating both cantilever and tip with controlled 3D geometries. The process allows the production of either sharp or spherical tips with high design flexibility, reproducibility, and yield.
Koutayba Saada, David Bourrier, Juliette Lignieres, Etienne Dague, Laurent Malaquin   +4 more
wiley   +1 more source

Calibration of equivalent geometric imperfections for second‐order theory analysis of hot‐rolled U‐profiles

Steel Construction, EarlyView.
Abstract The stability behaviour of steel structures is important when performing design. Standards (such as EN 1993‐1‐1 – Eurocode 3 Part 1‐1) take the stability of steel members into account and allow for verifications using reduction factors or by second‐order theory analysis considering equivalent geometric imperfections.
Stalin Ibanez, Caridad Moscoso, Matthias Kraus   +2 more
wiley   +1 more source