Effect of excess sodium on the excitation of potassium in an air-acetylene flame: a steady state kinetic model which takes into account collisional excitation

1991 ◽  
Vol 341 (10) ◽  
pp. 577-585 ◽  
Author(s):  
Mark F. Zaranyika ◽  
Canissius Nyakonda ◽  
Peter Moses
Keyword(s):  
Steady State ◽  
Kinetic Model ◽  
Collisional Excitation ◽  
Steady State Kinetic ◽  
Excess Sodium ◽  
State Kinetic

Serial analysis of renal blood flow by positron tomography with rubidium-82

1986 ◽  
Vol 251 (5) ◽  
pp. H1024-H1030
Author(s):  
N. Tamaki ◽  
C. A. Rabito ◽  
N. M. Alpert ◽  
T. Yasuda ◽  
J. A. Correia ◽  
...  
Keyword(s):  
Blood Flow ◽  
Steady State ◽  
Kinetic Model ◽  
Renal Blood Flow ◽  
Constant Infusion ◽  
Flow Reduction ◽  
Arterial Blood ◽  
Steady State Kinetic ◽  
State Kinetic ◽  
Rubidium 82

To determine whether renal blood flow can be measured by positron-emission tomography (PET) during constant infusion of rubidium-82 (82Rb) using a steady-state kinetic model, studies were performed in 10 dogs at control (n = 10), during mild flow reduction (n = 7), during severe flow reduction (n = 10), and after reperfusion of the kidney (n = 3). PET data were quantified to determine mean concentration of 82Rb (Ct) in each transverse section of the kidney. The arterial concentration (Ca) of 82Rb was measured by well counting of arterial blood samples during the equilibrium scan. 82Rb renal uptake (Ct/Ca) correlated nonlinearly with microsphere renal blood flow according to a steady-state kinetic model (r = 0.90). 82Rb estimated flow was 3.16 +/- 1.36 ml X min-1 X g-1 at control and 1.56 +/- 0.57 and 0.37 +/- 0.59 during mild and severe flow reductions, respectively. Microsphere determined flow was 2.89 +/- 0.77 ml X min-1 X g-1 at control, 1.58 +/- 0.42 at mild reduction, and 0.27 +/- 0.49 at severe reduction. In the occlusion and reperfusion model, the 82Rb estimated flow during occlusion was 0.21 +/- 0.15 ml X min-1 X g-1 and on reperfusion went up to 2.13 +/- 1.08. The contralateral kidney demonstrated reductions in the 82Rb estimated flow of 3.02 +/- 1.62 ml X min-1 X g-1 (63%) and 2.92 +/- 0.89 (61%) during mild and severe flow reductions, respectively. We conclude that PET with 82Rb permits serial quantitative assessment of renal flood flow.

Steady state kinetic model for entrained flow CO gasification of biomass at high temperature

Energy ◽  
2020 ◽  
Vol 196 ◽  
pp. 117073 ◽  
Author(s):  
M.A. Kibria ◽  
Pramod Sripada ◽  
Sankar Bhattacharya
Keyword(s):  
Steady State ◽  
High Temperature ◽  
Kinetic Model ◽  
Entrained Flow ◽  
Steady State Kinetic ◽  
State Kinetic

Steady-state kinetic model for headspace solvent microextraction

2008 ◽  
Vol 1215 (1-2) ◽  
pp. 30-36 ◽  
Author(s):  
Charlene R. Schnobrich ◽  
Michael A. Jeannot
Keyword(s):  
Steady State ◽  
Kinetic Model ◽  
Steady State Kinetic ◽  
State Kinetic
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