Results 221 to 230 of about 3,071,786 (268)

Pressure to measure pressure: the McLean Tonometer

British Journal of Ophthalmology, 2009
Albrecht von Graefe’s invention of the surgical iridectomy procedure for the treatment of glaucoma in 1857 was his impetus to design an instrument to measure the eye pressure so that he could record pressures before and after iridectomy. He also constructed a campimeter for plotting the visual field.
Richard, Keeler, Arun D, Singh, Harminder S, Dua   +2 more
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Pressure measurement: Electrical pressure transducers

Progress in Cardiovascular Diseases, 1963
Summary The principles of intravascular pressure detection and recording have been discussed. Accuracy of recording depends upon the dynamic response characteristics (frequency response and sensitivity), and the stability of the transducer system, as well as the response characteristics of the amplifier and recorder.
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Ultrasonic pressure measurement in pressure vessels

Review of Scientific Instruments, 2014
Based on the reflected longitudinal wave, a new non-intrusive method for pressure measurement is proposed. The acoustoelastic theory and the thin-shell theory are introduced to develop the pressure measurement model in cylindrical pressure vessels. And a pressure measurement system is constructed to evaluate the effectiveness of the proposed method ...
Yao, Bi, Hongliang, Zhou, Zhiyao, Huang, Hanhua, Zhou, Xianglong, Yang   +4 more
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Pressure, pressure

2021
Elaine A Hanzak, Diana Lynn Barnes, Judith Ellis   +2 more
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Pressure developed under pressure garment

British Journal of Plastic Surgery, 1993
To study how much pressure develops under a pressure garment, and how to obtain adequate effective pressure for scar treatment, we have used garments in combination with sponge and plastic plates in human volunteers. The pressures increased significantly when a sponge or sponge and plastic plate were used beneath the garment compared to pressures using
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Vascular Pressure Relationships and the Intraocular Pressure

Archives of Ophthalmology, 1961
The intraocular pressure of the eye had been previously reported to be related to the anterior ciliary and vortex venous pressure; however, no relationship has been found between the normal eye pressure and systemic blood pressure. On the other hand, it is well known that acute changes of blood pressure produce parallel changes of eye pressure.
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Blood Pressure and Atmospheric Pressure

Annals of the New York Academy of Sciences, 1996
M, Weinbacher, B, Martina, T, Bart, J, Drewe, P, Gasser, K, Gyr   +5 more
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What is the pressure to follow?: Driving pressure versus Tidal pressure

Medicina Intensiva (English Edition), 2022
A, González-Castro, V, Modesto I Alapont, A, Fernandez, A, Medina Villanueva, E, Cuenca Fito, Y, Peñasco   +5 more
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[The relationship between mouth pressure or tracheal pressure and esophagus pressure and diaphragmatic pressure].

Zhonghua jie he he hu xi za zhi = Zhonghua jiehe he huxi zazhi = Chinese journal of tuberculosis and respiratory diseases, 2010
To investigate the relationship between mouth pressure (Pmo) or tracheal pressure (Ptr) and esophagus pressure (Pes) or transdiaphragmatic pressure.Seventeen patients were involved in the study. Maximal inspiratory pressure (MIP), maximal transdiaphragmatic pressure (Pdi(max)), maximal esophagus pressure (Pes(max)), twitch mouth pressure (TwPmo ...
Ze-guang, Zheng, Rong-chang, Chen, Ge, Yu, Feng-quan, Yang, Xing-jie, Zhang, Yi-min, Li, Jing-ping, Zheng, Nan-shan, Zhong   +7 more
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The Pressure Ratio in the Theory of Bin Pressures

Journal of Applied Mechanics, 1979
The pressure ratio K0 is assumed to be a constant in the theory developed by Janssen for determining the pressures imparted by a granular material to its container. Recently it was shown that K0 can be defined less restrictively as the ratio of the perimeter average of the horizontal stress acting on the vertical wall of the container to the cross ...
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