Influence of oxygen partial pressure on surface tension and its temperature coefficient of molten iron

2011 ◽  
Vol 109 (1) ◽  
pp. 014902 ◽  
Author(s):  
S. Ozawa ◽  
S. Suzuki ◽  
T. Hibiya ◽  
H. Fukuyama
Keyword(s):  
Surface Tension ◽  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Temperature Coefficient ◽  
Molten Iron

scholarly journals Influence of Vaporization of Sample on Oxygen Partial Pressure for Surface Tension Measurement for Molten Iron

Netsu Bussei ◽  
2014 ◽  
Vol 27 (3) ◽  
pp. 115-122
Author(s):  
Suguru Takahashi ◽  
Shumpei Ozawa ◽  
Hiroyuki Fukuyama ◽  
Naoyuki Watanabe
Keyword(s):  
Surface Tension ◽  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Molten Iron ◽  
Surface Tension Measurement

Relationship of Surface Tension, Oxygen Partial Pressure, and Temperature for Molten Iron

2011 ◽  
Vol 50 (11S) ◽  
pp. 11RD05 ◽  
Author(s):  
Shumpei Ozawa ◽  
Suguru Takahashi ◽  
Shoji Suzuki ◽  
Hiroharu Sugawara ◽  
Hiroyuki Fukuyama
Keyword(s):  
Surface Tension ◽  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Molten Iron ◽  
Relationship Of

Relationship of Surface Tension, Oxygen Partial Pressure, and Temperature for Molten Iron

2011 ◽  
Vol 50 (11) ◽  
pp. 11RD05 ◽  
Author(s):  
Shumpei Ozawa ◽  
Suguru Takahashi ◽  
Shoji Suzuki ◽  
Hiroharu Sugawara ◽  
Hiroyuki Fukuyama
Keyword(s):  
Surface Tension ◽  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Molten Iron ◽  
Relationship Of

A mathematical model of the hemoglobin-oxygen dissociation curve of human blood and of the oxygen partial pressure as a function of temperature.

1984 ◽  
Vol 30 (10) ◽  
pp. 1646-1651 ◽  
Author(s):  
O Siggaard-Andersen ◽  
P D Wimberley ◽  
I Göthgen ◽  
M Siggaard-Andersen
Keyword(s):  
Mathematical Model ◽  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Temperature Coefficient ◽  
Inverse Function ◽  
Oxygen Dissociation Curve ◽  
Dissociation Curve ◽  
Oxygen Dissociation ◽  
Hill Slope ◽  
Dissociation Curves

Abstract A mathematical model is described giving the oxygen saturation fraction (s) as a function of the oxygen partial pressure (p): y - y0 = x - x0 + h X tanh [k X (x - x0)], where y = kn[s/(1-s)] and x = ln(p/kPa). The parameters are: y0 = 1.875; x0 = 1.946 + a + b; h = 3.5 + a; k = 0.5343; b = 0.055 X [T/(K - 310.15)]; a = 1.04 X (7.4 - pH) + 0.005 X Cbase/(mmol/L) + 0.07 X [[CDPG/(mmol/L)] - 5], where Cbase is the base excess of the blood and CDPG is the concentration of 2,3-diphosphoglycerate in the erythrocytes. The Hill slope, n = dy/dx, is given by n = 1 + h X k X [1 - tanh2[k X (x - x0)]]. n attains a maximum of 2.87 for x = x0, and n----1 for x----+/- infinity. The model gives a very good fit to the Severinghaus standard oxygen dissociation curve and the parameters may easily be fitted to other oxygen dissociation curves as well. Applications of the model are described including the solution of the inverse function (p as a function of s) by a Newton-Raphson iteration method. The po2-temperature coefficient is given by dlnp/dT = [A X alpha X p + CHb X n X S X (1 - s) X B]/[alpha X p + CHB X n X s X (1 - s)], where A = -dln alpha/dT approximately equal to 0.012 K-1; B = (lnp/T)s = 0.073 K-1 for y = y0; alpha = the solubility coefficient of O2 in blood = 0.0105 mmol X L-1 X kPa-1 at 37 degrees C; CHb = concentration of hemoglobin iron in the blood. Approximate equations currently in use do not take the variations of the po2-temperature coefficient with p50 and CHb into account.

Surface tension of a Si melt: influence of oxygen partial pressure

1995 ◽  
Vol 156 (1-2) ◽  
pp. 52-58 ◽  
Author(s):  
Xinming Huang ◽  
Shinji Togawa ◽  
Sang-Ik Chung ◽  
Kazutaka Terashima ◽  
Shigeyuki Kimura
Keyword(s):  
Surface Tension ◽  
Oxygen Partial Pressure ◽  
Partial Pressure

Surface tension of molten bismuth at different oxygen partial pressure with the sessile drop method

2004 ◽  
Vol 33 (6) ◽  
pp. 338-346 ◽  
Author(s):  
Zhangfu Yuan ◽  
Jianfeng Fan ◽  
Jing Li ◽  
Jiajun Ke ◽  
Kusuhiro Mukai
Keyword(s):  
Surface Tension ◽  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Sessile Drop ◽  
Sessile Drop Method ◽  
Drop Method
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