Results 31 to 40 of about 12,580 (256)

Intravital quantification reveals dynamic calcium concentration changes across B cell differentiation stages

open access: yeseLife, 2021
Calcium is a universal second messenger present in all eukaryotic cells. The mobilization and storage of Ca2+ ions drives a number of signaling-related processes, stress–responses, or metabolic changes, all of which are relevant for the development of ...
Carolin Ulbricht   +7 more
doaj   +1 more source

An adaptive grid method for degenerate semilinear quenching problems [PDF]

open access: yes, 2000
This paper studies the structure and implementation of a specially formulated adaptive grid method for computing the numerical solution of a class of degenerate semilinear quenching problems.
H. Cheng, Q. Sheng, Sheng, Q., Cheng, H.
core   +1 more source

Induction Heating of Gear Wheels in Consecutive Contour Hardening Process

open access: yesEnergies, 2021
Induction contour hardening of gear wheels belongs to effective heat treatment technologies especially recommended for high-tech applications in machinery, automotive and aerospace industries.
Jerzy Barglik   +3 more
doaj   +1 more source

Thermal analysis using induction and concentrated solar radiation for the heating of metals

open access: yesResults in Engineering, 2022
It is described the thermal analysis of a cylindrical workpiece involving the coupling of two heat sources. Induction heating was applied, which generated Eddy currents that circulated through the workpiece and heated the material surface.
Armando Rojas-Morín   +4 more
doaj   +1 more source

Remarks on the quenching estimate for a nonlocal diffusion problem with a reaction term

open access: yesJournal of Numerical Analysis and Approximation Theory, 2012
In this paper, we address the following initial value problem\[\begin{array}{ll}\hbox{\(u_t=\int_{\Omega}J(x-y)(u(y, t)-u(x, t)){\rm d}y+f(u(x, t))\quad \mbox{in}\quad \overline{\Omega}\times(0,T)\),} \\\hbox{\(u(x,0)=u_{0}(x)\geq 0\quad \mbox{in}\quad ...
Halima Nachid
doaj   +2 more sources

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

open access: yesFEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Numerical quenching solutions of localized semilinear parabolic equation [PDF]

open access: yes, 2007
This paper concerns the study of the numerical approximationfor the following initial-boundary value problem:ut(x; t) = uxx(x; t) + E(1 - u(0; t))-p; (x; t) 2 (-l; l) x (0; T),u(-l; t) = 0; u(l; t) = 0; t in (0; T),u(x; 0) = u0(x) and gt;= 0; x in (-l ...
Boni, Théodore K.   +2 more
core  

Simulation Model for the Laminar Plasma Jet Surface Quenching of the Rail Steel

open access: yes工程科学与技术, 2021
Surface quenching of the rail steel using the laminar plasma jet can increase its service life, but the treatment parameters can only be determined by the experimental methods currently, which is time-consuming and laborious.
Deping YU   +4 more
doaj  

AscF in the mycobacterial CIII–CIV supercomplex lacks metal and nucleotide binding but links malate oxidation to respiration

open access: yesFEBS Letters, EarlyView.
The mycobacterial CIII‐CIV respiratory supercomplex is an obligate assembly, encompassing several subunits of unknown functions. We have characterized the intracellular subunit AscF, and show that it is unlikely to be a sensor for metals or nucleotides, but is required for growth on nonfermentable energy sources, and likely works as an adapter for ...
Eni Rile   +8 more
wiley   +1 more source

A new optimization procedure for the accurate characterization of thermal phase transformation curves based on controlled quenching experiments

open access: yesMATEC Web of Conferences, 2016
Precise hardness and phase content prediction for quenched steel with the finite element method requires optimal material data, which is usually obtained from measured continuous cooling transformation (CCT) diagrams. However, most software packages that
Peterli Maurice   +3 more
doaj   +1 more source

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