scholarly journals An Improvement of High-Pressure Rolling-Ball Viscometer and Evaluation of the Equipment Constant

2014 ◽  
Vol 63 (10) ◽  
pp. 729-734
Author(s):  
Seiji SWAMURA
Keyword(s):  
High Pressure ◽  
Rolling Ball ◽  
Rolling Ball Viscometer

A High Pressure Rolling-Ball Viscometer up to 1 GPa

1986 ◽  
Vol 25 (Part 1, No. 7) ◽  
pp. 1091-1096 ◽  
Author(s):  
Masaya Izuchi ◽  
Ken Nishibata
Keyword(s):  
High Pressure ◽  
Rolling Ball ◽  
Rolling Ball Viscometer

High pressure rolling‐ball viscometer of a corrosion‐resistant type

1990 ◽  
Vol 61 (2) ◽  
pp. 871-873 ◽  
Author(s):  
Seiji Sawamura ◽  
Nobuo Takeuchi ◽  
Kiyoshi Kitamura ◽  
Yoshihiro Taniguchi
Keyword(s):  
High Pressure ◽  
Corrosion Resistant ◽  
Rolling Ball ◽  
Rolling Ball Viscometer

A rolling ball viscometer for high pressure use

Physica B+C ◽  
1986 ◽  
Vol 139-140 ◽  
pp. 903-906 ◽  
Author(s):  
K. Nishibata ◽  
M. Izuchi
Keyword(s):  
High Pressure ◽  
Rolling Ball ◽  
Rolling Ball Viscometer

scholarly journals Effects of Pressure, Temperature, and Concentration on the Viscosity of Aqueous Ammonium Bromide Solution

1995 ◽  
Vol 50 (2-3) ◽  
pp. 316-322 ◽  
Author(s):  
Yukihiro Yoshimura ◽  
Seiji Sawamura ◽  
Yoshihiro Taniguchi
Keyword(s):  
Activation Energy ◽  
High Pressure ◽  
Water Structure ◽  
Ammonium Bromide ◽  
Concentration Effects ◽  
Rolling Ball ◽  
Bromide Solution ◽  
Rolling Ball Viscometer ◽  
Temperature And Concentration Effects ◽  
Bromide Solutions

Abstract The viscosity of aqueous ammonium bromide solutions is measured at 0.1-1.0 mol kg-1, 278.2-323.2 K, and 0.1-375 MPa, using a high-pressure rolling-ball viscometer. The activation energy (Ev) for viscous flow and Jones-Dole's B coefficient are estimated. Ev against pressure yields a concave curve with a minimum and B yields a convex one with a maximum. These phenomena are attributed to pressure, temperature, and concentration effects on the water-structure.

Rolling Ball Viscometer

1943 ◽  
Vol 15 (3) ◽  
pp. 212-218 ◽  
Author(s):  
Robert Hubbard ◽  
George Brown
Keyword(s):  
Rolling Ball ◽  
Rolling Ball Viscometer

A VISCOMETRIC METHOD FOR THE ESTIMATION OF MILK CELL COUNT

1970 ◽  
Vol 33 (8) ◽  
pp. 351-354
Author(s):  
W. G. Whittlestone ◽  
L. R. Fell ◽  
H. De Langen
Keyword(s):  
Cell Count ◽  
Correlation Coefficient ◽  
Coefficient Of Variation ◽  
Rolling Ball ◽  
Simple Apparatus ◽  
Microscopic Count ◽  
Rolling Ball Viscometer

The use of a rolling ball viscometer to estimate the cell count of milk treated with California Mastitis Reagent is described. The method compares favorably with the direct microscopic count and requires relatively simple apparatus and unskilled operators. A correlation coefficient for mean count and log viscometer time of 0.93 with a coefficient of variation of 8.1% were obtained. The repeatability of viscometer readings was 0.97.

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