Results 21 to 30 of about 214,382 (263)

On a time-optimal control problem for a heat conduction equation with involution [PDF]

Известия Саратовского университета. Новая серия: Математика. Механика. Информатика
In this paper, we consider a boundary control problem for a heat conduction equation with involution in a bounded one-dimensional domain. The solution with the control function on the border of the rod is given.
Dekhkonov, Farrukh N.
doaj   +1 more source

Large Time Behavior of Solutions to the Nonlinear Heat Equation with Absorption with Highly Singular Antisymmetric Initial Values

Advanced Nonlinear Studies, 2020
In this paper, we study global well-posedness and long-time asymptotic behavior of solutions to the nonlinear heat equation with absorption, ut-Δ⁢u+|u|α⁢u=0{u_{t}-\Delta u+\lvert u\rvert^{\alpha}u=0}, where u=u⁢(t,x)∈ℝ{u=u(t,x)\in\mathbb{R}}, (t,x)∈(0,∞)×
Mouajria Hattab, Tayachi Slim, Weissler Fred B.   +2 more
doaj   +1 more source

Time analyticity of the biharmonic heat equation, the heat equation with potentials and some nonlinear heat equations

Communications on Pure & Applied Analysis, 2022
<p style='text-indent:20px;'>In this paper, we investigate the pointwise time analyticity of three differential equations. They are the biharmonic heat equation, the heat equation with potentials and some nonlinear heat equations with power nonlinearity of order <inline-formula><tex-math id="M1">\begin{document}$ p $\end{document}</
openaire   +3 more sources

Numerical study on conjugate heat transfer in a liquid-metal-cooled pipe based on a four-equation turbulent heat transfer model

Nuclear Engineering and Technology, 2023
Conjugate heat transfer between liquid metal and solid is a common phenomenon in a liquid-metal-cooled fast reactor's fuel assembly and heat exchanger, dramatically affecting the reactor’s safety and economy.
Xian-Wen Li, Xing-Kang Su, Long Gu, Xiang-Yang Wang, Da-Jun Fan   +4 more
doaj   +1 more source

Optimal Control of Heat Equation by Coupling FVM and FEM Codes

Mathematics
In this paper, the optimal control theory is applied to a temperature optimization problem by coupling finite element and finite volume codes. The optimality system is split into the state and adjoint system.
Samuele Baldini, Giacomo Barbi, Antonio Cervone, Federico Giangolini, Sandro Manservisi, Lucia Sirotti   +5 more
doaj   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

Investigation into the heat transfer models for the hot crude oil transportation in a long‐buried pipeline

Energy Science & Engineering, 2023
Based on reasonable simplifications of a two‐dimensional (2D) energy equation, a basic heat transfer equation in 1D form is obtained for the hot crude oil transportation in a long‐buried pipeline.
Qing Yuan, Yiyang Luo, Teng Shi, Yuyao Gao, Jinjia Wei, Bo Yu, Yujie Chen   +6 more
doaj   +1 more source

BOUNDARY CONTROL OF ROD TEMPERATURE FIELD WITH A SELECTED POINT

Вестник КазНУ. Серия математика, механика, информатика, 2022
In this paper, we study the issue of boundary control of the temperature field of a rod with a selected point. The main purpose of the work is to clarify the conditions for the existence of a boundary control that ensures the transition of the ...
K. B. Imanberdiyev, B. E. Kanguzhin, A. M. Serik, B. Uaissov   +3 more
doaj   +1 more source

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

FEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

Heat conduction in potato cubes: an experiment to estimate thermal diffusivity using arduino [PDF]

Revista Brasileira de Ensino de Física
This work presents a low-cost experiment to investigate heat conduction inside potato cubes, using thermistors as a thermometric instrument and Arduino as a data acquisition platform.
V.P.M. de Almeida, V.L.B. de Jesus, D.G.G. Sasaki   +2 more
doaj   +1 more source