Results 201 to 210 of about 5,648,546 (249)
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A model for predicting ventilation rates in mammals
Environmental Toxicology and Pharmacology, 1997The relationship between ventilation rate (1/min) and body weight (kg) in mammals was examined using regression techniques. The initial hypothesis of a single power function relationship was rejected. An additional model of the log-log relationship was developed which is piece-wise linear.
K R, Dixon, B M, Joab, F D, Snyder
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Contamination rate of sterilized ventilators in an ICU
Critical Care Medicine, 1981The risk of ventilator-associated infection was studied by bacteriological monitoring of different parts of 25 ventilators functioning in a surgical ICU. Although patient tubings were not changed throughout the study, colonization of tracheal tube was found invariably to be the first phenomenon. All tracheal tubes were infected by day 9.
Comhaire, A., Lamy, Maurice
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Ventilation Rates in Fulgur Whelks
Journal of Shellfish Research, 2020Direct measurements of ventilation rates in the marine gastropods Busycon carica, Busycotypus canaliculatus, Sinistrofulgur sinistrum, and Melongena corona were made. Ventilation in B. carica ranged between 3 and 186 mL min–1; the rate in B. canaliculatus was 12–174 mL min–1, and 0.6–42 mL min–1 in S. sinistrum.
Lewis E. Deaton +2 more
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Control of Resting Ventilation Rate in Grasshoppers
Journal of Experimental Biology, 1996ABSTRACT We examined the effect of extracellular acid–base status and tracheal gas levels on the ventilation rate of resting Romalea guttata and Schistocerca americana grasshoppers. We manipulated haemolymph pH and [HCO3- ] within normal physiological ranges using injections of HCl, NaOH, NaHCO3 and NaCl into the haemocoel.
, Gulinson, , Harrison
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Ventilation rates for the positive ventilation of vegetables in bulk bins
Journal of Agricultural Engineering Research, 1983Abstract The speed of the cooling front passing upwards through vegetables in positively ventilated bulk bins was constant at any ventilation rate and increased linearly with increasing airflow. Vegetables with similar physical properties cooled at very similar rates and values are given for calculating either the quantity of air needed to cool ...
R.T. Lindsay, M.A. Neale, H.J.M. Messer
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How to quantify natural ventilation rate of single-sided ventilation with trickle ventilator?
Building and Environment, 2020Abstract This study quantifies the natural ventilation rate in single-sided natural ventilation with a trickle ventilator, inserted in a window frame or a shutter box. The seasonal characteristics of natural ventilation in actual residential conditions were examined by long-term field measurements in a multi-residential building during spring and ...
Younhee Choi, Doosam Song
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Estimation of ventilation rates in dwellings
The Science of The Total Environment, 1992Abstract Several methods using gaseous tracers such as nitrous oxide, or the radioactive tracer 85 Kr have been used for estimating ventilation rates in rooms. This paper presents a method to evaluate the ventilation rate using radon daughter aerosol normally present in a room as a tracer.
A SHAIKH +3 more
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Method for the analysis of the entrainment between heart rate and ventilation rate
Pfl�gers Archiv European Journal of Physiology, 1976A digital computer program was developed which allows to continuously represent the relation between heart rate and ventilation rate. Using this program, experiments in anesthetized rabbits were performed. We found periods of synchronization, periods of transient entrainment and escape, and periods of complete desynchronization.
T, Kenner +2 more
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Predicting ventilation rates in hybrid ventilated pig housing facilities
2008 Providence, Rhode Island, June 29 - July 2, 2008, 2008To determine the emission rates of particulate matter and volatile organic compounds (VOC), the prediction of the air exchange rate of an animal housing facility must be accurate. This applies to mechanically and naturally ventilated facilities or a combination referred to as hybrid ventilation systems (HV) that are becoming common in Quebec ...
null Frédéric Pelletier +4 more
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The Determinants of Respiratory Rate During Mechanical Ventilation
American journal of respiratory and critical care medicine, 1997Abstract The independent and interactive effect of feedback related to volume, CO2, inspiratory flow, and arousal state on the regulation of respiratory rate in mechanically ventilated humans is not well characterized. We examined the rate response of eight normal volunteers during both quiet wakefulness and non-rapid-eye-movement ...
D G, Tobert +3 more
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