Cobalt porphyrin-Mediated Oxygen Transport in a Polymer Membrane: Effect of the Cobalt porphyrin Structure on the Oxygen-Binding Reaction, Oxygen-Diffusion Constants, and Oxygen-Transport Efficiency

1994 ◽  
Vol 98 (19) ◽  
pp. 5084-5088 ◽  
Author(s):  
Hiroyuki Nishide ◽  
Takayuki Suzuki ◽  
Hiroyoshi Kawakami ◽  
Eishun Tsuchida
Keyword(s):  
Oxygen Transport ◽  
Oxygen Diffusion ◽  
Polymer Membrane ◽  
Oxygen Binding ◽  
Binding Reaction ◽  
Transport Efficiency ◽  
Cobalt Porphyrin ◽  
Diffusion Constants ◽  
Membrane Effect

Cation ordering and oxygen transport behaviour in Sr1−3x/2LaxTiO3perovskites

2017 ◽  
Vol 5 (11) ◽  
pp. 5321-5331 ◽  
Author(s):  
Paul C. M. Fossati ◽  
Robin W. Grimes
Keyword(s):  
Oxygen Transport ◽  
Oxygen Diffusion ◽  
Cation Ordering ◽  
Atomistic Modelling ◽  
Modelling Techniques ◽  
Transport Behaviour ◽  
Diffusion Mechanisms

Effects of cation ordering on oxygen diffusion mechanisms in (Sr,La)TiO3perovskites is investigated using atomistic modelling techniques.

Intracellular oxygen diffusion: the roles of myoglobin and lipid at cold body temperature.

1998 ◽  
Vol 201 (8) ◽  
pp. 1119-1128 ◽  
Author(s):  
B D Sidell
Keyword(s):  
Body Temperature ◽  
Fish Species ◽  
Oxygen Diffusion ◽  
Mechanical Performance ◽  
Muscle Cells ◽  
Cold Temperature ◽  
Oxygen Binding ◽  
Mitochondrial Density ◽  
Polar Fish ◽  
The Mean

Cold temperature can constrain the rate of oxygen movement through muscle cells of ectothermic animals because the kinetic energy of the solvent-solute system decreases and the viscosity of the aqueous cytoplasm increases during cooling within the physiological range of body temperatures. These factors affect the movement of both dissolved oxygen and oxymyoglobin, the two predominant routes of intracellular oxygen diffusion in vertebrate oxidative muscles. In addition, reductions in temperature have been shown to increase the affinity of myoglobin for oxygen and to slow the rate of Mb O2-dissociation, compromising the ability of this oxygen-binding protein to facilitate intracellular oxygen diffusion. Experiments with both seasonally cold-bodied fishes and polar fish species suggest that several factors combine to overcome these limitations in delivery of oxygen from the blood to the mitochondria. First, reductions in body temperature induce increases in mitochondrial density of oxidative muscle cells, reducing the mean diffusional pathlength for oxygen between capillaries and mitochondria. Second, cold body temperature in both temperate-zone and polar fishes is frequently correlated with a high content of neutral lipid in oxidative muscles, providing an enhanced diffusional pathway for oxygen through the tissue. Third, recent data indicate that myoglobins from fish species bind and release oxygen more rapidly at cold temperature than do those from mammals. Data from both oxidative skeletal muscle and cardiac muscle of fishes suggest that these factors in various combinations contribute to enhance the aerobically supported mechanical performance of the tissues at cold cellular temperatures.

scholarly journals The effect of sub-surface strontium depletion on oxygen diffusion in La0.6Sr0.4Co0.2Fe0.8O3−δ

2020 ◽  
Vol 8 (37) ◽  
pp. 19414-19424 ◽  
Author(s):  
Mathew A. R. Niania ◽  
Andrew K. Rossall ◽  
Jaap A. Van den Berg ◽  
John A. Kilner
Keyword(s):  
Transport Properties ◽  
Oxygen Transport ◽  
Oxygen Diffusion ◽  
Surface Composition ◽  
Ion Beam ◽  
Ion Beam Analysis ◽  
Heat Treated ◽  
Beam Analysis ◽  
Depth Scale

The immediate surface and sub-surface composition of heat treated La0.6Sr0.4Co0.2Fe0.8O3−δ samples was measured by ion beam analysis and compared to oxygen transport properties over the same depth scale.

Highly Selective Oxygen Transport through a Cobalt Porphyrin Liquid Membrane

1997 ◽  
Vol 101 (29) ◽  
pp. 5725-5729 ◽  
Author(s):  
Xue-Si Chen ◽  
Hiroyuki Nishide ◽  
Kenichi Oyaizu ◽  
Eishun Tsuchida
Keyword(s):  
Oxygen Transport ◽  
Liquid Membrane ◽  
Cobalt Porphyrin

Oxygen transport by rabbit embryonic blood: high cooperativity of hemoglobin-oxygen binding

1995 ◽  
Vol 99 (1) ◽  
pp. 157-164 ◽  
Author(s):  
Robert A.B. Holland ◽  
Susan J. Calvert
Keyword(s):  
Oxygen Transport ◽  
Oxygen Binding

Enhanced Oxygen Diffusion through a Porous Membrane Chemically Modified with Cobalt Porphyrin on Its Pore Surface

1994 ◽  
Vol 116 (10) ◽  
pp. 4503-4504 ◽  
Author(s):  
Hiroyuki Nishide ◽  
Takayuki Suzuki ◽  
Ryuji Nakagawa ◽  
Eishun Tsuchida
Keyword(s):  
Oxygen Diffusion ◽  
Porous Membrane ◽  
Pore Surface ◽  
Cobalt Porphyrin ◽  
Chemically Modified

scholarly journals Hemerythrin's oxygen-binding reaction studied by laser photolysis.

1981 ◽  
Vol 78 (4) ◽  
pp. 2307-2309 ◽  
Author(s):  
N. Alberding ◽  
D. Lavalette ◽  
R. H. Austin
Keyword(s):  
Laser Photolysis ◽  
Oxygen Binding ◽  
Binding Reaction

Oxygen diffusion via cobalt-porphyrin complexes fixed in a polymer matrix

1988 ◽  
Vol 92 (22) ◽  
pp. 6461-6464 ◽  
Author(s):  
Eishun Tsuchida ◽  
Hiroyuki Nishide ◽  
Manshi Ohyanagi ◽  
Osamu Okada
Keyword(s):  
Polymer Matrix ◽  
Oxygen Diffusion ◽  
Cobalt Porphyrin
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