Results 21 to 30 of about 1,624,486 (300)

Multi-peak solutions for magnetic NLS equations without non--degeneracy conditions [PDF]

open access: yes, 2007
In the work we consider the magnetic NLS equation (\frac{\hbar}{i} \nabla -A(x))^2 u + V(x)u - f(|u|^2)u = 0 \quad {in} \R^N where $N \geq 3$, $A \colon \R^N \to \R^N$ is a magnetic potential, possibly unbounded, $V \colon \R^N \to \R$ is a multi-well ...
Cingolani, Silvia   +2 more
core   +8 more sources

Multi-Peak Solutions for a Wide Class of Singular Perturbation Problems [PDF]

open access: yes, 1999
In this paper we are concerned with a wide class of singular perturbation problems arising from such diverse fields as phase transitions, chemotaxis, pattern formation, population dynamics and chemical reaction theory.
Wei, J, Winter, M
core   +2 more sources

Non-radial sign-changing solutions for the Schroedinger-Poisson problem in the semiclassical limit [PDF]

open access: yes, 2015
We study the existence of nonradial sign-changing solutions to the Schroedinger-Poisson system in dimension N>=3. We construct nonradial sign-changing multi-peak solutions whose peaks are displaced in suitable symmetric configurations and collapse to the
A. Ambrosetti   +21 more
core   +2 more sources

Calculation of peak shear strength of bentonite in salt solutions

open access: yesYantu gongcheng xuebao, 2019
Bentonite, as a barrier material for high-level waste disposal repositories, acts as a buffer material between waste storage tanks and surrounding rocks.
LI Xiao-yue , XU Yong-fu
doaj   +1 more source

Self-consistent mode-coupling theory for the viscosity of rod-like polyelectrolyte solutions [PDF]

open access: yes, 2004
A self-consistent mode-coupling theory is presented for the viscosity of solutions of charged rod-like polymers. The static structure factor used in the theory is obtained from polymer integral equation theory; the Debye-H\"{u}ckel approximation is ...
Antonietti   +30 more
core   +2 more sources

On the Stationary Cahn-Hilliard Equation: Bubble Solutions [PDF]

open access: yes, 1998
We study stationary solutions of the Cahn--Hilliard equation in a bounded smooth domain which have an interior spherical interface (bubbles). We show that a large class of interior points (the ``nondegenerate peak'' points) have the following ...
Wei, J, Winter, M
core   +1 more source

Solutions for the Cahn-Hilliard Equation With Many Boundary Spike Layers [PDF]

open access: yes, 2001
In this paper we construct new classes of stationary solutions for the Cahn-Hilliard equation by a novel approach. One of the results is as follows: Given a positive integer K and a (not necessarily nondegenerate) local minimum point of the mean
Wei, J, Winter, M
core   +1 more source

On the relation between the echo-peak shift and Brownian-oscillator correlation function [PDF]

open access: yes, 1996
We show that for systems that exhibit bimodal dynamics in their system-bath correlation function the shift of the stimulated photon-echo maximum as a function of waiting time reflects fairly well the long time part of the correlation function.
Boeij, Wim P. de,   +2 more
core   +1 more source

The effect of nutrient broth media on PEDOT:PSS gated OECTs for whole-cell bacteria detection

open access: yesBiosensors and Bioelectronics: X, 2022
The organic electrochemical transistor (OECT) is a device of much interest in biological sensing applications, including the detection of various cell types and electrolytes.
Eric Frantz   +3 more
doaj   +1 more source

Optical solitons in Fiber Bragg Gratings for the coupled form of the nonlinear (2+1)-dimensional Kundu-Mukherjee-Naskar equation via four powerful techniques

open access: yesResults in Physics, 2023
In this article, four powerful techniques namely, the three wave method, double exponential, homoclinic breather, M-Shaped rational, M-Shaped with one kink, and M-Shaped with two kink are putting into practice to bolster the new optical solutions of the ...
Abdulmalik A. Altwaty
doaj   +1 more source

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