Dead-core solutions for slightly non-isothermal diffusion-reaction problems with power-law kinetics

2020 ◽  
Vol 83 ◽  
pp. 576-589
Author(s):  
Boris Golman ◽  
Vsevolod V. Andreev ◽  
Piotr Skrzypacz
Keyword(s):  
Power Law ◽  
Diffusion Reaction ◽  
Dead Core ◽  
Isothermal Diffusion ◽  
Power Law Kinetics

scholarly journals Slow domain reconfiguration causes power-law kinetics in a two-state enzyme

2018 ◽  
Vol 115 (3) ◽  
pp. 513-518 ◽  
Author(s):  
Iris Grossman-Haham ◽  
Gabriel Rosenblum ◽  
Trishool Namani ◽  
Hagen Hofmann
Keyword(s):  
Free Energy ◽  
Single Molecule ◽  
Power Law ◽  
Energy Landscape ◽  
Rate Equations ◽  
Free Energy Landscape ◽  
Closed Domain ◽  
Single Molecule Fret ◽  
Power Law Kinetics ◽  
Interdomain Interactions

Protein dynamics are typically captured well by rate equations that predict exponential decays for two-state reactions. Here, we describe a remarkable exception. The electron-transfer enzyme quiescin sulfhydryl oxidase (QSOX), a natural fusion of two functionally distinct domains, switches between open- and closed-domain arrangements with apparent power-law kinetics. Using single-molecule FRET experiments on time scales from nanoseconds to milliseconds, we show that the unusual open-close kinetics results from slow sampling of an ensemble of disordered domain orientations. While substrate accelerates the kinetics, thus suggesting a substrate-induced switch to an alternative free energy landscape of the enzyme, the power-law behavior is also preserved upon electron load. Our results show that the slow sampling of open conformers is caused by a variety of interdomain interactions that imply a rugged free energy landscape, thus providing a generic mechanism for dynamic disorder in multidomain enzymes.

A finite element solution for diffusion and reaction in partially wetted catalysts with power-law kinetics

1988 ◽  
Vol 27 (1) ◽  
pp. 191-194 ◽  
Author(s):  
Patrick L. Mills ◽  
Steven Lai ◽  
Milorad P. Dudukovic ◽  
Palghat A. Ramachandran
Keyword(s):  
Finite Element ◽  
Power Law ◽  
Finite Element Solution ◽  
Element Solution ◽  
Power Law Kinetics

scholarly journals Positive equilibria of a class of power-law kinetics

2017 ◽  
Vol 56 (2) ◽  
pp. 358-394 ◽  
Author(s):  
Dylan Antonio S. J. Talabis ◽  
Carlene Perpetua P. Arceo ◽  
Eduardo R. Mendoza
Keyword(s):  
Power Law ◽  
Power Law Kinetics

Power law kinetics in reversible enzyme-catalyzed reaction due to diffusion

2003 ◽  
Vol 119 (6) ◽  
pp. 3501-3508 ◽  
Author(s):  
Sujata Paul ◽  
Gautam Gangopadhyay
Keyword(s):  
Power Law ◽  
Power Law Kinetics

Ruthenium catalysts for ammonia synthesis at high pressures: Preparation, characterization, and power-law kinetics

1997 ◽  
Vol 151 (2) ◽  
pp. 443-460 ◽  
Author(s):  
F. Rosowski ◽  
A. Hornung ◽  
O. Hinrichsen ◽  
D. Herein ◽  
M. Muhler ◽  
...  
Keyword(s):  
Power Law ◽  
High Pressures ◽  
Ammonia Synthesis ◽  
Ruthenium Catalysts ◽  
Power Law Kinetics

scholarly journals Power-Law Kinetics of Tracer Washout from Physiological Systems

10.1114/1.105 ◽  
1998 ◽  
Vol 26 (5) ◽  
pp. 775-779 ◽  
Author(s):  
Daniel A. Beard ◽  
James B. Bassingthwaighte
Keyword(s):  
Power Law ◽  
Power Law Kinetics ◽  
Kinetics Of ◽  
Physiological Systems

ChemInform Abstract: Ruthenium Catalysts for Ammonia Synthesis at High Pressures: Preparation, Characterization, and Power-Law Kinetics.

ChemInform ◽  
2010 ◽  
Vol 28 (27) ◽  
pp. no-no
Author(s):  
F. ROSOWSKI ◽  
A. HORNUNG ◽  
O. HINRICHSEN ◽  
D. HEREIN ◽  
M. MUHLER ◽  
...  
Keyword(s):  
Power Law ◽  
High Pressures ◽  
Ammonia Synthesis ◽  
Ruthenium Catalysts ◽  
Power Law Kinetics
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