Results 71 to 80 of about 22,368,455 (279)
Chemistry–Methods, EarlyView.The experimental setup presented in this work combining laboratory‐based X‐ray absorption spectroscopy with an electrochemical reactor advances the fundamental understanding of electrocatalysts at extended time scales. By the example of the electrochemical reduction of CO2, the parameters are discussed that are relevant for optimizing the system to ...
Martina Rüscher +6 more
wiley +1 more source
Non-Homogeneous Thermoelastic Timoshenko Systems
Bulletin of the Brazilian Mathematical Society, New Series, 2017 The well-established Timoshenko system is characterized by a particular relation between shear stress and bending moment from its constitutive equations. Accordingly, a (thermal) dissipation added on the bending moment produces exponential stability if and only if the so called “equal wave speeds” condition is satisfied.
M. S. Alves +3 more
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Advancements in Understanding Catalyst Reconstruction During Electrochemical CO2 Reduction
Exploration, EarlyView.The reconstruction of heterogenous catalysts is inevitable during CO2 reduction reaction (CO2RR). Therefore, understanding reconstruction of catalyst is important for rational design of catalyst. Here, we review the principles of catalyst reconstruction, factors that affect reconstruction of catalysts, analysis tool to trace the reconstruction, and ...
Woosuck Kwon +4 more
wiley +1 more source
Exponential stability for a Timoshenko-type system with history
Journal of Mathematical Analysis and Applications, 2011 AbstractIn this paper, we consider hyperbolic Timoshenko-type vibrating systems that are coupled to a heat equation modeling an expectedly dissipative effect through heat conduction. We use the semigroup method to prove the exponential stability result with assumptions on past history relaxation function g exponentially decaying for the equal wave ...
Zhiyong Ma +2 more
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Truncated Bresse-Timoshenko beam with fractional Laplacian damping [PDF]
Contributions to Mathematics, 2023 Luiz Gutemberg Rosário Miranda +2 more
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Shock and Vibration, 2012 In the existing reports regarding free and forced vibrations of the beams, most of them studied a uniform beam carrying various concentrated elements using Bernoulli-Euler Beam Theory (BET) but without axial force. The purpose of this paper is to utilize
Yusuf Yesilce
doaj +1 more source
Fractional Timoshenko beam with a viscoelastically damped rotational component
AIMS Mathematics, 2023 This paper is concerned with a fractional Timoshenko system of order between one and two. We address the question of well-posedness in an appropriate space when the rotational component is viscoelastic or subject to a viscoelastic controller. To this end
Banan Al-Homidan, Nasser-eddine Tatar
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Uniform decay in a Timoshenko-type system with past history
Journal of Mathematical Analysis and Applications, 2009 AbstractFernández Sare and Rivera [H.D. Fernández Sare, J.E. Muñoz Rivera, Stability of Timoshenko systems with past history, J. Math. Anal. Appl. 339 (1) (2008) 482–502] considered the following Timoshenko-type systemρ1φtt−K(φx+ψ)x=0,ρ2ψtt−bψxx+∫0∞g(t)ψxx(t−s,.)ds+K(φx+ψ)=0, where g is a positive differentiable exponentially decaying function.
Messaoudi, Salim A. +1 more
openaire +5 more sources
Property of growth determined by the spectrum of operator associated to Timoshenko system with memory [PDF]
Mathematica Moravica, 2019 In this manuscript we prove the property of growth determined by spectrum of the linear operator associated with the Timoshenko system with two histories.
Ribeiro-Alves Ronaldo +2 more
doaj
Drivers of human attitudes towards wolves Canis lupus in Kazakhstan
People and Nature, EarlyView.Abstract Kazakhstan is recognized as a key stronghold for the grey wolf (Canis lupus). Nonetheless, the wolf status and the dynamics of human‐wolf coexistence in the region remain poorly understood. This study aims to fill that gap by exploring current attitudes towards wolves in Kazakhstan and identify the underlying drivers of these attitudes.
Alyona Koshkina +5 more
wiley +1 more source