Factors that influence flow through intravascular catheters: the clinical relevance of Poiseuille's law

Transfusion ◽  
2020 ◽  
Vol 60 (7) ◽  
pp. 1410-1417
Author(s):  
David J. Berman ◽  
Adam Schiavi ◽  
Steven M. Frank ◽  
Shirley Duarte ◽  
Deborah A. Schwengel ◽  
...  
Keyword(s):  
Clinical Relevance ◽  
Poiseuille's Law ◽  
Flow Through ◽  
Intravascular Catheters ◽  
Poiseuille’S Law

THE FLOW AND VISCOSITY OF LIQUID HELIUM

1939 ◽  
Vol 17a (8) ◽  
pp. 149-163 ◽  
Author(s):  
H. E. Johns ◽  
J. O. Wilhelm ◽  
H. Grayson Smith
Keyword(s):  
Laminar Flow ◽  
Liquid Helium ◽  
Additional Pressure ◽  
Glass Capillaries ◽  
Poiseuille's Law ◽  
Flow Through ◽  
Pressure Independent ◽  
Over The Top ◽  
Poiseuille’S Law

Experiments on the flow of liquid helium through glass capillaries ranging in diameter from 0.025 cm. to 0.0036 cm., and with lengths varying from 2 cm. to 26 cm. were carried out. Normal laminar flow was obtained for He I with a viscosity of the order of 10−5 c.g.s. units. For He II it was found that the flow could be expressed as the sum of a laminar flow plus an additional pressure-independent flow. The laminar portion, which obeyed Poiseuille's law, gave a viscosity of the order of 10−3 c.g.s. units. The pressure-independent portion appears to be partially due to "creep" over the top of the reservoir, but there still remains an additional pressure-independent flow through the capillaries. This additional flow depends among other things on the intensity of illumination and is evidently connected with the "fountain" effect.

scholarly journals Poiseuille’s law in polyuria

2014 ◽  
Vol 29 (7) ◽  
pp. 1289-1289 ◽  
Author(s):  
Michiel F. Schreuder ◽  
Linda Koster-Kamphuis
Keyword(s):  
Poiseuille's Law ◽  
Poiseuille’S Law

Flow in xylem vessels and Poiseuille's law

1978 ◽  
Vol 56 (3) ◽  
pp. 333-338 ◽  
Author(s):  
R. Giordano ◽  
A. Salleo ◽  
S. Salleo ◽  
F. Wanderlingh
Keyword(s):  
Water Flow ◽  
Total Flux ◽  
Sechium Edule ◽  
Poiseuille's Law ◽  
Measured Water ◽  
Poiseuille’S Law

We measured water flow in simple xylem vessels of Sechium edule at various pressures. We found a disagreement with Poiseuille's law, which changes from vessel to vessel and becomes abruptly pronounced in some cases. We discuss our data in terms of an 'impediment coefficient,' K. It can be shown that the total flux in a stem, calculated as the sum of the flux in single vessels, agrees quite well with the data reported in literature.

scholarly journals THE SIZE OF PORES IN COLLODION MEMBRANES

1926 ◽  
Vol 9 (6) ◽  
pp. 755-762 ◽  
Author(s):  
David I. Hitchcock
Keyword(s):  
Pore Size ◽  
Microscopic Examination ◽  
Dark Field ◽  
Dark Field Illumination ◽  
Poiseuille's Law ◽  
Poiseuille’S Law

By the application of Poiseuille's law to the rate of flow of water through collodion membranes, it is calculated that the membranes used had pore radii of the order of 0.3 to 2 x 10–6 cm. On the same basis the number of pores per sq. cm. appears to vary from 270 x 1010 to 7 x 1010, decreasing with increase in pore size. Reasons are given for preferring these figures for the radii to figures, 100 times as large, which were calculated by others. Microscopic examination of the membranes, with dark-field illumination, indicates that they are made up of solid granules or filaments of collodion much less than 1 x 10–4 cm. in thickness.

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