Relaxation times and in situ kinetic analysis during network evolution of epoxy via a nickel catalyst of imidazole

2011 ◽  
Vol 516 (1-2) ◽  
pp. 52-57 ◽  
Author(s):  
Abdollah Omrani ◽  
Ayret Mollova ◽  
Carlos Mattea ◽  
Siegfried Stapf
Keyword(s):  
Kinetic Analysis ◽  
Nickel Catalyst ◽  
Relaxation Times ◽  
Network Evolution

Kinetic analysis of Ag particle redispersion into ZSM-5 in the presence of coke using in situ XAFS

2021 ◽  
Author(s):  
Kazumasa Murata ◽  
Junya Ohyama ◽  
Atsushi Satsuma
Keyword(s):  
Fine Structure ◽  
Kinetic Analysis ◽  
X Ray ◽  
Xafs Spectroscopy ◽  
Absorption Fine ◽  
Ag Particles ◽  
In Situ Xafs ◽  
Ag Particle ◽  
X Ray Absorption

In the present study, the redispersion behavior of Ag particles on ZSM-5 in the presence of coke was observed using in situ X-ray absorption fine structure (XAFS) spectroscopy.

Switchable 19F MRI polymer theranostics: towards in situ quantifiable drug release

2017 ◽  
Vol 8 (34) ◽  
pp. 5157-5166 ◽  
Author(s):  
A. V. Fuchs ◽  
A. P. Bapat ◽  
G. J. Cowin ◽  
K. J. Thurecht
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Hyperbranched Polymer ◽  
Relaxation Times ◽  
Mri Contrast Agent ◽  
Resonance Imaging ◽  
Mri Contrast ◽  
19F Mri ◽  
Magnetic Resonance Imaging Mri

A switchable polymeric 19F magnetic resonance imaging (MRI) contrast agent was synthesised whereby the transverse (T2) relaxation times increased as a therapeutic was released from a hyperbranched polymer (HBP) scaffold.

scholarly journals Kinetic Analysis of the Hydrolysis of Pentose-1-Phosphates Through Apparent Nucleoside Phosphorolysis Equilibrium Shifts

2020 ◽  
Author(s):  
Felix Kaspar ◽  
Peter Neubauer ◽  
Anke Kurreck
Keyword(s):  
Kinetic Analysis ◽  
Hydrolysis Kinetics ◽  
Equilibrium Thermodynamics ◽  
Apparent Increase ◽  
Equilibrium Conversion ◽  
Sugar Phosphates ◽  
Kinetics Of ◽  
Hydrolysis Of

<div>Ask what an equilibrium can do for you:</div><div>Hydrolysis of pentose-1-phosphates leads to an apparent increase of the equilibrium conversion in nucleoside phosphorolysis reactions. This information can be leveraged via equilibrium thermodynamics to determine the hydrolysis kinetics of in situ generated sugar phosphates, which are known to be elusive and difficult to quantify.<br></div>

scholarly journals Dynamics of carbon diffusion and segregation through nickel catalyst, investigated by in-situ XPS, during the growth of nitrogen-doped graphene

Carbon ◽  
2019 ◽  
Vol 155 ◽  
pp. 410-420 ◽  
Author(s):  
Y. Bleu ◽  
V. Barnier ◽  
F. Christien ◽  
F. Bourquard ◽  
A.-S. Loir ◽  
...  
Keyword(s):  
Nickel Catalyst ◽  
Carbon Diffusion ◽  
Nitrogen Doped ◽  
In Situ Xps ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

scholarly journals Stress breaks universal aging behavior in a metallic glass

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Amlan Das ◽  
Peter M. Derlet ◽  
Chaoyang Liu ◽  
Eric M. Dufresne ◽  
Robert Maaß
Keyword(s):  
Structural Dynamics ◽  
Superposition Principle ◽  
Relaxation Times ◽  
Correlation Spectroscopy ◽  
Disordered Materials ◽  
Photon Correlation ◽  
Slowing Down ◽  
Lennard Jones ◽  
Different Temperatures

Abstract Numerous disordered materials display a monotonous slowing down in their internal dynamics with age. In the case of metallic glasses, this general behavior across different temperatures and alloys has been used to establish an empirical universal superposition principle of time, waiting time, and temperature. Here we demonstrate that the application of a mechanical stress within the elastic regime breaks this universality. Using in-situ x-ray photon correlation spectroscopy (XPCS) experiments, we show that strong fluctuations between slow and fast structural dynamics exist, and that these generally exhibit larger relaxation times than in the unstressed case. On average, relaxation times increase with stress magnitude, and even preloading times of several days do not exhaust the structural dynamics under load. A model Lennard-Jones glass under shear deformation replicates many of the features revealed with XPCS, indicating that local and heterogeneous microplastic events can cause the strongly non-monotonous spectrum of relaxation times.

scholarly journals In situ kinetic analysis of glyoxalase I and glyoxalase II in Saccharomyces cerevisiae

2001 ◽  
Vol 268 (14) ◽  
pp. 3930-3936 ◽  
Author(s):  
Ana Margarida Martins ◽  
Pedro Mendes ◽  
Carlos Cordeiro ◽  
Ana Ponces Freire
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Kinetic Analysis ◽  
Glyoxalase I ◽  
Glyoxalase Ii
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