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136 results on '"H. Riddle"'

52. The measurement of air flow in a forced expiration using a pressure-sensitive transistor

Author

B. W. Watson, D. P. Jones, H. Riddle, and S. V. Ellam

Subjects
Materials science, Transistors, Electronic, Acoustics, Flow (psychology), Airflow, Transducers, Biomedical Engineering, Signal, Flow measurement, law.invention, law, Pressure, Humans, Amplifiers, Electronic, business.industry, Transistor, General Engineering, Electrical engineering, Forced Expiratory Flow Rates, Computer Science Applications, Transducer, Semiconductors, Venturi effect, business, Lung Volume Measurements
Abstract

A pressure-sensitive transistor has been tested as a pneumotachograph transducer for the measurement of forced expirations. A venturi head is used, as it is shown that, over most of the flow range, it has a better signal/drift ratio than a linear-resistance flowmeter of comparable resistance. Preliminary measurements on normal subjects show that f.e.v.1 can be measured to an accuracy of 3% and the peak flow to approximately 5%. The accuracy of f.v.c. values is not as good, as it is limited by a threshold at the input of the venturi square-rooting circuit. Simple ways of overcoming this difficulty are suggested.

Published
1975

54. American Ceramic Society

Author

F. H. Riddle

Subjects
Materials science, visual_art, Metallurgy, Materials Chemistry, Ceramics and Composites, visual_art.visual_art_medium, Ceramic
Abstract

n/a

Published
1921

55. The Control of Glaze-Fit by Means of Tensile Test Specimens1

Author

F. H. Riddle and J. S. Laird

Subjects
Best fitting, Materials science, Crazing, Glaze, Materials Chemistry, Ceramics and Composites, Composite material, Tensile testing
Abstract

The selection of a suitable glaze for a particular body by usual inspection of a field of glaze trials is not sufficiently precise, and gives no indication of slow crazing tendencies. A new method of selecting glazes depends on the effect of a glaze on the strength of a porcelain tensile test specimen. The best fitting glazes increase the strength while poorer ones decrease it. Glazes which craze weaken the specimens very markedly. Results obtained with various glazes on one fire porcelain are given.

Published
1922

56. Long-term results of Roux-en-Y hepatocholangiojejunostomy

Author

H W Scott, D H Riddle, C E Lane, and J L Sawyers

Subjects
Adult, Male, medicine.medical_specialty, business.industry, General surgery, Biliary Tract Diseases, Follow up studies, MEDLINE, Infant, Long term results, Middle Aged, Roux-en-Y anastomosis, Bile Ducts, Intrahepatic, Jejunum, Methods, Medicine, Humans, Surgery, Female, business, Research Article, Aged, Follow-Up Studies
Published
1973

57. 'The FAMILY ENCYCLOPqDIA OF MEDICINE.'

Author

H. H. Riddle

Subjects
media_common.quotation_subject, Encyclopedia, General Medicine, Art, Classics, media_common
Abstract

n/a

Published
1914

75. Investment Securities

Author

Winfield W. Riefier, Chairman, David Friday, Walter Lichtenstein, and J. H. Riddle

79. Effect of Brokers

Author

Winfield W. Riefier, Chairman, David Friday, Walter Lichtenstein, and J. H. Riddle

86. List of Titles and Index

Author

Winfield W. Riefier, Chairman, David Friday, Walter Lichtenstein, and J. H. Riddle

94. Agricultural Credit

Author

Winfield W. Riefier, Chairman, David Friday, Walter Lichtenstein, and J. H. Riddle

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