Results 61 to 70 of about 18,754,485 (327)

Loop blow-up inflation

Journal of High Energy Physics
We present a new model of string inflation driven by a blow-up Kähler modulus of type IIb compactifications with a potential generated by string loops.
Sukṛti Bansal, Luca Brunelli, Michele Cicoli, Arthur Hebecker, Ruben Kuespert   +4 more
doaj   +1 more source

Upper bound estimate for the blow-up time of a class of integrodifferential equation of parabolic type involving variable source

Comptes Rendus. Mathématique, 2020
Consider a class of integrodifferential of parabolic equations involving variable source with Dirichlet boundary condition \begin{equation*} u_{t}=\Delta u-\int _{0}^{t}g\left(t-s\right) \Delta u\left(x,s\right) \mathrm{d} s+|u| ^{p(x) -2}u.
Rahmoune, Abita
doaj   +1 more source

Tailoring Light Management in All‐Perovskite Tandem Solar Cells: The Impact of Nanotextures

Advanced Functional Materials, EarlyView.
To further improve the power conversion efficiency of all‐perovskite tandem solar cells, light management strategies need to be implemented. Front‐sided nanotextures reduce reflection losses, which boosts light absorption, thus increasing the tandem JSC, which is further supported by reducing parasitic absorption.
Sebastian Berwig, Yeonghun Yun, Doyun Im, Isabella Taupitz, Alexandros Cruz, Marlene Härtel, Bor Li, Kevin J. Prince, Hanifah Winarto, Thomas W. Gries, Klaus Jäger, Florian Riesebeck, Daniele Mantione, Sharon Monaci, Silvia Mariotti, Vishnu Vijayakumar, René A. J. Janssen, Sangwook Lee, Bernd Stannowski, Christiane Becker, Philipp Tockhorn, Steve Albrecht   +21 more
wiley   +1 more source

Global and blow-up solutions for a nonlinear reaction diffusion equation with Robin boundary conditions

Boundary Value Problems, 2020
In the paper, we investigate global and blow-up solutions for a class of nonlinear reaction diffusion equations with Robin boundary conditions. By using auxiliary functions and a first-order differential inequality technique, we establish conditions on ...
Huimin Tian, Lingling Zhang
doaj   +1 more source

Blow-up and global solutions for a class of time fractional nonlinear reaction-diffusion equation with weakly spatial source

Applied Mathematics Letters, 2019
This paper investigates the blow-up of solutions for a time fractional nonlinear reaction–diffusion equation with weakly spatial source. We first derive two sufficient conditions under which the solutions may blow up in finite time.
Jianxiong Cao, Guojie Song, Jie Wang, Qi-Hong Shi, Sujing Sun   +4 more
semanticscholar   +1 more source

Blow-up for semilinear wave equations with the scale invariant damping and super-Fujita exponent [PDF]

, 2017
The constant in the scale invariant damping may have a critical value classifying the situation on semilinear wave equations to "heat-like", or to "wave-like".
Ning-An Lai, H. Takamura, Kyouhei Wakasa
semanticscholar   +1 more source

Blow-up of solutions to critical semilinear wave equations with variable coefficients [PDF]

Journal of Differential Equations, 2018
We verify the critical case $p=p_0(n)$ of Strauss' conjecture (1981) concerning the blow-up of solutions to semilinear wave equations with variable coefficients in $\mathbf{R}^n$, where $n\geq 2$.
Kyouhei Wakasa, B. Yordanov
semanticscholar   +1 more source

Acetoacetates Derived From Vegetable Oils: A Platform for Tailor‐Made Vinylogous Urethane Foams

Advanced Functional Materials, EarlyView.
A renewable vegetable oil is converted into acetoacetate‐functionalized precursors for the preparation of catalyst‐free vinylogous urethane foams. Room‐temperature foaming with n‐pentane generates lightweight cellular materials, while the choice of amine enables control over foam structure and mechanical properties.
Krzysztof Polaczek, Priscilla de Souza Lima, Olga Gotkiewicz, Ondrej Kopilec, Radka Hobzova, Lívia Kanizsová, Mikelis Kirpluks, Ondrej Sedlacek, Hynek Beneš   +8 more
wiley   +1 more source

Blow-Up Solutions and Global Existence for Quasilinear Parabolic Problems with Robin Boundary Conditions

Abstract and Applied Analysis, 2014
We study the blow-up and global solutions for a class of quasilinear parabolic problems with Robin boundary conditions. By constructing auxiliary functions and using maximum principles, the sufficient conditions for the existence of blow-up solution, an ...
Juntang Ding
doaj   +1 more source

On Blow-up Sets for the Parabolic Equation dt ∂tβ(u) = ⊿u+f(u) in a Ball [PDF]

, 1991
Radially symmetric solutions of nonlinear degenerate parabolic equations are considered in a ball, under some blow-up conditions on β(ξ), f(ξ) and the initial date.
MOCHIZUKI, Kiyoshi, SUZUKI, Ryuichi, IMAI, Takashi   +2 more
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