Results 331 to 340 of about 341,970 (371)
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Wave propagation in a viscoelastic tube containing a viscous fluid
Journal of Fluid Mechanics, 1978Small amplitude, axially symmetric waves in a thin-walled viscoelastic tube containing a viscous compressible fluid are considered. Previous authors have found two modes of propagation for such waves but have studied them only in the low frequency, long wavelength limit.
S. I. Rubinow, Joseph B. Keller
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Graphite-containing tubes for protection of the stream of metal in teeming
Refractories, 1984Protection of the stream of metal in the steel-teeming-ladle-intermediate-ladle area of the continuous billet casting machine with the use of isostatically formed refractory graphite-containing tubes has been introduced in the Converter Shop of the Azov Steel Combine.
Yu. V. Materikin +5 more
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Nonlinear waves in a viscous fluid contained in a viscoelastic tube
Zeitschrift für angewandte Mathematik und Physik, 2001In the present work the propagation of weakly nonlinear waves in a prestressed viscoelastic thin tube filled with a viscous fluid is studied. Using the reductive perturbation technique in analyzing the nonlinear equations of a viscoelastic tube and the approximate equations of a viscous fluid, the propagation of weakly nonlinear waves in the longwave ...
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Bacterial lipopolysaccharide extraction in silica gel-containing tubes
Journal of Microbiological Methods, 1991Abstract We have studied the usefulness of commercially available silica gel-containing tubes (serum separator tubes) for lipopolysaccharide extraction. Bacterial lipopolysaccharides from different bacterial species have been extracted in regular test tubes and tubes containing silica gel.
Sebastián Albertí +5 more
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Nitrogen-Containing Carbon Tubes Fabricated by Light Irradiation
LangmuirCotton-core/polypyrrole (PPy)-sheath fibers (cotton/PPy fibers) were synthesized by aqueous chemical oxidative seeded polymerization and were utilized as precursors for nitrogen-containing carbon (NCC) tubes. Irradiation of the cotton/PPy fibers with a near-infrared (NIR) laser heated them to approximately 300 °C due to light-to-heat photothermal ...
Kanade Matsui +11 more
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Preparation of permeation tubes containing 35SO2
The International Journal of Applied Radiation and Isotopes, 1978Oliver Lindqvist, Christer Gruvberg
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The Longitudinal Vibrations of a Liquid Contained in a Tube with Elastic Walls
Physical Review, 1927This paper investigates the most general longitudinal vibrations of an elastic tube partly filled with liquid. From the rather complicated exact solution of the problem, a simple approximate formula is derived for the reduction of the velocity of sound in the liquid due to the vibrations of the wall of the tube.
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The Propagation of Sound through Gases contained in Narrow Tubes
Proceedings of the Physical Society. Section B, 1952A comprehensive investigation is made into the validity of the Helmholtz-Kirchhoff equations for the absorption and velocity of sound in a gas contained in a narrow tube. Results are given for air, oxygen, nitrogen and hydrogen contained in tubes of radii between 0.15 mm and 1.17 mm at frequencies between 60 and 150 kc/s.
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The Absorption of Sound in Carbon Dioxide contained in Narrow Tubes
Proceedings of the Physical Society. Section B, 1954Measurements have been made of ultrasonic absorption in carbon dioxide contained in narrow tubes of the order of 1 mm diameter. Frequencies used were between 40 and 120 kc/s. Results showed that over a considerable range of frequency/pressure on either side of the relaxation peak of CO2 the total absorption was given by the sum of the Helmholtz ...
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A test-tube container for photochemical experiments [PDF]
Journal of Chemical Education, 1933 openaire +1 more source