Characterization of the Simultaneous Decay Kinetics of Metarhodopsin States II and III in Rhodopsin by Solution-State NMR Spectroscopy

2014 ◽  
Vol 53 (8) ◽  
pp. 2078-2084 ◽  
Author(s):  
Jochen Stehle ◽  
Robert Silvers ◽  
Karla Werner ◽  
Deep Chatterjee ◽  
Santosh Gande ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Decay Kinetics ◽  
Solution State ◽  
Simultaneous Decay ◽  
Kinetics Of

Characterization of the Simultaneous Decay Kinetics of Metarhodopsin States II and III in Rhodopsin by Solution-State NMR Spectroscopy

2014 ◽  
Vol 126 (8) ◽  
pp. 2110-2116 ◽  
Author(s):  
Jochen Stehle ◽  
Robert Silvers ◽  
Karla Werner ◽  
Deep Chatterjee ◽  
Santosh Gande ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Decay Kinetics ◽  
Solution State ◽  
Simultaneous Decay ◽  
Kinetics Of

Simultaneous decay kinetics of drops and excitons luminescence in silicon

1976 ◽  
Vol 19 (11) ◽  
pp. 1141-1143 ◽  
Author(s):  
J. Collet ◽  
J. Barrau ◽  
M. Brousseau ◽  
H. Maaref
Keyword(s):  
Decay Kinetics ◽  
Simultaneous Decay ◽  
Kinetics Of

Electrophysiological and Morphological Characterization of Neurons Within Neocortical Ectopias

2001 ◽  
Vol 85 (2) ◽  
pp. 495-505 ◽  
Author(s):  
Lisa A. Gabel ◽  
Joseph J. LoTurco
Keyword(s):  
Nmda Receptor ◽  
Epileptiform Activity ◽  
Pyramidal Cells ◽  
Neurological Deficits ◽  
Equilibrium Potential ◽  
Inhibitory Input ◽  
Decay Kinetics ◽  
Postsynaptic Currents ◽  
Kinetics Of

Focal developmental abnormalities in neocortex, including ectopic collections of neurons in layer I (ectopias), have been associated with behavioral and neurological deficits. In this study, we used infrared differential interference contrast microscopy and whole cell patch-clamp to complete the first characterization of neurons within and surrounding neocortical ectopias. Current-clamp recordings revealed that neurons within ectopias display multiple types of action potential firing patterns, and biocytin labeling indicated that ∼20% of the cells in neocortical ectopias can be classified as nonpyramidal cells and the rest as atypically oriented pyramidal cells. All cells had spontaneous excitatory (glutamatergic) and inhibitory (GABAergic) postsynaptic currents. Exhibitory postsynaptic currents consisted of both N-methyl-d-aspartate (NMDA) receptor-mediated and AMPA/kainate (A/K) receptor-mediated currents. The NMDA receptor-mediated component had decay time constants of 15.35 ± 2.2 (SE) ms, while the A/K component had faster decay kinetics of 7.6 ± 1.7 ms at −20 mV. GABAAreceptor-mediated synaptic currents in ectopic cells reversed at potentials near the Cl− equilibrium potential and had decay kinetics of 16.65 ± 1.3 ms at 0 mV. Furthermore we show that cells within ectopias receive direct excitatory and inhibitory input from adjacent normatopic cortex and can display a form of epileptiform activity.

Characterization of brominated natural rubber by solution-state 2D NMR spectroscopy

2017 ◽  
Vol 113 ◽  
pp. 6-12 ◽  
Author(s):  
Nuorn Choothong ◽  
Kenichiro Kosugi ◽  
Yoshimasa Yamamoto ◽  
Seiichi Kawahara
Keyword(s):  
Nmr Spectroscopy ◽  
Natural Rubber ◽  
2D Nmr ◽  
2D Nmr Spectroscopy ◽  
Solution State

Irradiation behavior of pyrolytic silicon carbide

1983 ◽  
Vol 41 ◽  
pp. 72-73
Author(s):  
R. J. Lauf
Keyword(s):  
Silicon Carbide ◽  
Fission Products ◽  
Thermodynamics And Kinetics ◽  
Neutron Fluences ◽  
Fuel Particles ◽  
Sic Coatings ◽  
Irradiation Behavior ◽  
Kinetics Of ◽  
Htgr Fuel

Fuel particles for the High-Temperature Gas-Cooled Reactor (HTGR) contain a layer of pyrolytic silicon carbide to act as a miniature pressure vessel and primary fission product barrier. Optimization of the SiC with respect to fuel performance involves four areas of study: (a) characterization of as-deposited SiC coatings; (b) thermodynamics and kinetics of chemical reactions between SiC and fission products; (c) irradiation behavior of SiC in the absence of fission products; and (d) combined effects of irradiation and fission products. This paper reports the behavior of SiC deposited on inert microspheres and irradiated to fast neutron fluences typical of HTGR fuel at end-of-life.

Catalytic activity of rhodium(I) complexes containing (ω-trimethylsilylalkyl)diphenylphosphines

1980 ◽  
Vol 45 (8) ◽  
pp. 2219-2223 ◽  
Author(s):  
Marie Jakoubková ◽  
Martin Čapka
Keyword(s):  
Catalytic Activity ◽  
Nmr Spectroscopy ◽  
Ir Spectroscopy ◽  
Electron Density ◽  
Phosphorus Atom ◽  
Proton Acceptor ◽  
Trimethylsilyl Group ◽  
Kinetics Of

Kinetics of homogenous hydrogenation of 1-heptene catalysed by rhodium(I) complexes prepared in situ from μ,μ'-dichloro-bis(cyclooctenerhodium) and phosphines of the type RP(C6H5)2 (R = -CH3, -(CH2)nSi(CH3)3; n = 1-4) have been studied. The substitution of the ligands by the trimethylsilyl group was found to increase significantly the catalytic activity of the complexes. The results are discussed in relation to the electron density on the phosphorus atom determined by 31P NMR spectroscopy and to its proton acceptor ability determined by IR spectroscopy.

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