Results 211 to 220 of about 748,380 (268)

Measurements of Components of Resistance to Breathing

Chest, 1989
Total respiratory resistance (Rrs), pulmonary resistance (RL), and airway resistance (Raw) of 12 male patients with chronic obstructive lung disease were measured by the partial occlusion method, intraesophageal balloon technique, and body plethysmography, respectively.
S T, Chiang, J, Green, W F, Wang, Y J, Yang, G M, Shiao, S C, King   +5 more
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Intracranial resistance measurements

Experimental Neurology, 1970
Abstract A three-contact electrical probe for resistance profile determination of brain tissue is described. It retains the sensitivity of bipolar electrodes yet is not afflicted with polarization effects. Experiments using this probe demonstrated that white matter can be distinguished from gray matter at a 95% confidence level.
openaire   +2 more sources

Resistance Measurements in Conductive Fabrics

Advanced Materials Research, 2011
Conductive fabrics look and feel like traditional fabrics, but there are conductive elements in the structure. Conductive fabrics are used for example in heating and ESD protection applications. The purpose of this study was to investigate how much the resistance of a conductive fabric changes when different factors, for example stretching or pressure,
Vanhala Jukka, Pola Taina
openaire   +1 more source

Resistances and their Measurements

1986
Electric current is the flow of charged particles. In order to contribute to the current, the charged particles must be free to move. In metals the carriers of electricity are negatively charged free electrons. In semiconductors such as silicon there are two types of carriers, namely free electrons and positive holes. If silicon, a group IV element, is
Badih El-Kareh, Richard J. Bombard
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Bridge for measurement of low resistance

Review of Scientific Instruments, 1979
A simple four-terminal bridge of low power dissipation and high resolution is used to measure small resistances at low temperatures.
J R, Matey, S B, Dierker, A C, Anderson
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Measurement of nasal airway resistance

Journal of Allergy, 1965
Abstract A measure of nasal airway resistance can be obtained by simultaneously relating transnasal pressure drop and the rate of nasal air flow. Resistance varies continuously throughout the range of attainable flows, and it has meaning only in relationship to specified rates of flow at which it is measured. The procedure described appears to provide
W R, SOLOMON, J A, MCLEAN, C, COOKINGHAM, G, AHRONHEIM, G R, DEMUTH   +4 more
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Measurements of the Resistance of the Maxillary Ostium

Acta Oto-Laryngologica, 1965
A method for measuring the resistance of the maxillary ostium in cases with a relatively pronounced ostial obstruction is described. Antral lavage is performed by raising a bottle with irrigation fluid at a slow constant rate, by means of an elevator. The height between the fluid level and a point one cm below the infra-orbital margin is measured when ...
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Measurement of the hydrodynamic resistance of microdroplets

Lab on a Chip, 2016
Here, we demonstrate a novel method of measurement which determines precisely the hydrodynamic resistance of a droplet flowing through a channel.
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Comparative Measurements of Airway Resistance

Respiration, 2009
Three different ways to calculate airway resistance with the whole body plethysmograph during spontaneous breathing and the MBC maneuver were tested on normal subjects and patients with obstructive airway disease. The ‘effective resistance values’ calculated by applying periodic electric current theory correlate well with a linear interpolation of the ...
H, Matthys, U, Orth
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Low-resistance standard measures of resistance

Measurement Techniques, 1994
The construction and results of an investigation of lowresistance measures of electrical resistance (10 su−1), 1 Ω) for use in dc and ac circuits are described. The measures are used as standard measures of resistance and also as scale conveners in the State special and working standards of ac power.
V. S. Belov, I. Ya. Klebanov, L. I. Pogosova, O. I. Kiyan   +3 more
openaire   +1 more source