The steady-State corrosion kinetics of two-phase binary alloys forming the most-stable oxide

1996 ◽  
Vol 46 (5-6) ◽  
pp. 383-398 ◽  
Author(s):  
F. Gesmundo ◽  
P. Castello ◽  
F. Viani
Keyword(s):  
Steady State ◽  
Binary Alloys ◽  
Two Phase ◽  
Stable Oxide ◽  
Corrosion Kinetics ◽  
Kinetics Of

The steady-state corrosion kinetics of single-phase binary alloys with a solubility gap forming the most-stable oxide

1997 ◽  
Vol 47 (3-4) ◽  
pp. 215-235 ◽  
Author(s):  
F. Gesmundo ◽  
P. Castello ◽  
F. Viani
Keyword(s):  
Steady State ◽  
Single Phase ◽  
Binary Alloys ◽  
Stable Oxide ◽  
Corrosion Kinetics ◽  
Kinetics Of

scholarly journals Simultaneous determination of the kinetics of cardiac output, systemic O2 delivery, and lung O2 uptake at exercise onset in men

2006 ◽  
Vol 290 (4) ◽  
pp. R1071-R1079 ◽  
Author(s):  
Frédéric Lador ◽  
Marcel Azabji Kenfack ◽  
Christian Moia ◽  
Michela Cautero ◽  
Denis R. Morel ◽  
...  
Keyword(s):  
Cardiac Output ◽  
Steady State ◽  
Phase I ◽  
Time Course ◽  
Hemoglobin Concentration ◽  
Two Phase ◽  
Rapid Phase ◽  
Steady State Method ◽  
Exercise Onset ◽  
Kinetics Of

We tested whether the kinetics of systemic O2 delivery (Q̇aO2) at exercise start was faster than that of lung O2 uptake (V̇o2), being dictated by that of cardiac output (Q̇), and whether changes in Q̇ would explain the postulated rapid phase of the V̇o2 increase. Simultaneous determinations of beat-by-beat (BBB) Q̇ and Q̇aO2, and breath-by-breath V̇o2 at the onset of constant load exercises at 50 and 100 W were obtained on six men (age 24.2 ± 3.2 years, maximal aerobic power 333 ± 61 W). V̇o2 was determined using Grønlund's algorithm. Q̇ was computed from BBB stroke volume (Qst, from arterial pulse pressure profiles) and heart rate ( fh, electrocardiograpy) and calibrated against a steady-state method. This, along with the time course of hemoglobin concentration and arterial O2 saturation (infrared oximetry) allowed computation of BBB Q̇aO2. The Q̇, Q̇aO2 and V̇o2 kinetics were analyzed with single and double exponential models. fh, Qst, Q̇, and V̇o2 increased upon exercise onset to reach a new steady state. The kinetics of Q̇aO2 had the same time constants as that of Q̇. The latter was twofold faster than that of V̇o2. The V̇o2 kinetics were faster than previously reported for muscle phosphocreatine decrease. Within a two-phase model, because of the Fick equation, the amplitude of phase I Q̇ changes fully explained the phase I of V̇o2 increase. We suggest that in unsteady states, lung V̇o2 is dissociated from muscle O2 consumption. The two components of Q̇ and Q̇aO2 kinetics may reflect vagal withdrawal and sympathetic activation.

The kinetics of growth and the critical conditions for the formation of the most-stable oxide in the oxidation of binary alloys

1994 ◽  
Vol 42 (3-4) ◽  
pp. 285-301 ◽  
Author(s):  
F. Gesmundo ◽  
F. Viani ◽  
Y. Niu
Keyword(s):  
Binary Alloys ◽  
Critical Conditions ◽  
Stable Oxide ◽  
Kinetics Of

Kinetics of the two-phase zone of binary alloys, taking account of external perturbations

2007 ◽  
Vol 37 (11) ◽  
pp. 914-917
Author(s):  
V. N. Gushchin ◽  
V. A. Ul’yanov
Keyword(s):  
Binary Alloys ◽  
Phase Zone ◽  
Two Phase ◽  
External Perturbations ◽  
Kinetics Of

The internal oxidation of two-phase binary alloys beneath an external scale of the less-stable oxide

1997 ◽  
Vol 47 (3-4) ◽  
pp. 355-380 ◽  
Author(s):  
F. Gesmundo ◽  
F. Viani ◽  
Y. Niu
Keyword(s):  
Internal Oxidation ◽  
Binary Alloys ◽  
External Scale ◽  
Two Phase ◽  
Stable Oxide

Interphase distribution of 2-furylethylenes

1985 ◽  
Vol 50 (8) ◽  
pp. 1642-1647 ◽  
Author(s):  
Štefan Baláž ◽  
Anton Kuchár ◽  
Ernest Šturdík ◽  
Michal Rosenberg ◽  
Ladislav Štibrányi ◽  
...  
Keyword(s):  
Partition Coefficient ◽  
Partition Coefficients ◽  
Transport Rate ◽  
Phase System ◽  
Two Phase ◽  
Interphase Distribution ◽  
Distribution Kinetics ◽  
System 1 ◽  
Kinetics Of

The distribution kinetics of 35 2-furylethylene derivatives in two-phase system 1-octanol-water was investigated. The transport rate parameters in direction water-1-octanol (l1) and backwards (l2) are partition coefficient P = l1/l2 dependent according to equations l1 = logP - log(βP + 1) + const., l2 = -log(βP + 1) + const., const. = -5.600, β = 0.261. Importance of this finding for assesment of distribution of compounds under investigation in biosystems and also the suitability of the presented method for determination of partition coefficients are discussed.

Kinetic analysis of mechanism of intestinal Na+-dependent sugar transport

1985 ◽  
Vol 248 (5) ◽  
pp. C498-C509 ◽  
Author(s):  
D. Restrepo ◽  
G. A. Kimmich
Keyword(s):  
Experimental Data ◽  
Steady State ◽  
Sugar Transport ◽  
Enzyme Kinetic ◽  
Steady State Distribution ◽  
State Distribution ◽  
Least Squares Fit ◽  
Coupling Stoichiometry ◽  
Rate Limiting ◽  
Kinetics Of

Zero-trans kinetics of Na+-sugar cotransport were investigated. Sugar influx was measured at various sodium and sugar concentrations in K+-loaded cells treated with rotenone and valinomycin. Sugar influx follows Michaelis-Menten kinetics as a function of sugar concentration but not as a function of Na+ concentration. Nine models with 1:1 or 2:1 sodium:sugar stoichiometry were considered. The flux equations for these models were solved assuming steady-state distribution of carrier forms and that translocation across the membrane is rate limiting. Classical enzyme kinetic methods and a least-squares fit of flux equations to the experimental data were used to assess the fit of the different models. Four models can be discarded on this basis. Of the remaining models, we discard two on the basis of the trans sodium dependence and the coupling stoichiometry [G. A. Kimmich and J. Randles, Am. J. Physiol. 247 (Cell Physiol. 16): C74-C82, 1984]. The remaining models are terter ordered mechanisms with sodium debinding first at the trans side. If transfer across the membrane is rate limiting, the binding order can be determined to be sodium:sugar:sodium.

scholarly journals Effects of insulin on steady state kinetics of GLUT4 subcellular distribution in rat adipocytes. Evidence of constitutive GLUT4 recycling.

1992 ◽  
Vol 267 (25) ◽  
pp. 17710-17715 ◽  
Author(s):  
B.H. Jhun ◽  
A.L. Rampal ◽  
H Liu ◽  
M Lachaal ◽  
C.Y. Jung
Keyword(s):  
Steady State ◽  
Subcellular Distribution ◽  
Rat Adipocytes ◽  
Steady State Kinetics ◽  
Kinetics Of
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