Results 211 to 220 of about 186,460 (265)
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Site-specific hydrogen diffusion rates during clinopyroxene dehydration
Contributions to Mineralogy and Petrology, 2016The rate of hydrogen diffusion in clinopyroxene is relevant to interpreting hydrogen (“water”) concentrations in xenoliths, phenocrysts, and clinopyroxene-hosted melt inclusions to provide insight into the deep-earth water cycle and volcanic explosivity.
Elizabeth Ferriss +2 more
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Dehydration, lens movement and dryness ratings of hydrogel contact lenses
Ophthalmic and Physiological Optics, 1995SummaryPrevious studies have shown that soft lenses dehydrate during lens wear. The purpose of this study was to determine the dehydration time course of 38% water content non‐ionic MedalistTM, 58% ionic AcuvueTM and 74% non‐ionic PermaflexTM lenses, and the relationship between dehydration and in vivo diameter, movement and symptoms of dryness ...
Pritchard, Nicola, Fonn, Desmond
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Rate of Thermal Dehydration of Kaolinite in Vacuum
Journal of the American Ceramic Society, 1962The dehydration of kaolinite was carried out in a vacuum to evaluate the kinetics without the marked effect of water vapor. Samples of carefully fractionated particles were used and the effect of surface area was determined. At pressures in the order of 1μ of Hg the reaction was found to be diffusion‐controlled, with an activation energy of 43.5 kcal ...
J. BIRCH HOLT +2 more
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Clinical dehydration and glomerular filtration rate in acute paediatric gastroenteritis
Acta Paediatrica, 2013AbstractAimTo evaluate changes in glomerular filtration rate in acute gastroenteritis.MethodsThe correlation between two clinical diagnostic scales and glomerular filtration rate has been investigated in 113 children with acute gastroenteritis in a paediatric emergency setting.ResultsA significant reduction of GFR was found in 10% children less than ...
G.P. Milani +5 more
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Heat transfer effects on drying rate of food dehydration
The Canadian Journal of Chemical Engineering, 1974AbstractThis work studies the consequences of neglecting heat transfer effects in the Fick's law solution of food dehydration problems. A semi‐empirical approach is presented which correlates temperature and moisture changes of sugar beet root during the first falling rate period of drying; while the coupled heat and mass transfer equations are not ...
Luis M. Vaccarezza +2 more
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Low-Cost Sweating-Rate Sensor for Dehydration Monitoring in Sports
2023 IEEE SENSORS, 2023A total-cumulated-sweat/sweating-rate sensor for real-time monitoring of athletes' hydration is presented. Fabricated on flexible substrates using techniques compatible with rollto-roll production, the sensor features a total area of 13.7 cm(2), a sweat-volume capacity of approximately 28 mu L, and it is suitable for monitoring sweating rate for more ...
Ria A. +4 more
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Rates of low‐temperature dehydration of montmorillonite and illite
Journal of Applied Chemistry and Biotechnology, 1971AbstractThe kinetics of the isothermal dehydration of the clay minerals, montmorillonite and illite, were studied in vacuo as well as in the presence of a constant water vapour pressure. The dehydration followed a first‐order law, and the presence of water vapour led to (i) an increase in the extent of dehydration, compared with that in vacuo; (ii) a ...
R. Sh. Mikhail, N. M. Guindy
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Metabolic rate, not percent dehydration, predicts rectal temperature in marathon runners
Medicine & Science in Sports & Exercise, 1991This study was designed to determine the factors predicting the post-race rectal temperature in marathon runners. Post-race rectal temperatures of 30 recreational runners (maximum oxygen consumption (VO2max) = 58.3 +/- 5.9 ml O2.kg-1.min-1; mean +/- SD) who completed a 42.2 km marathon at 75.8% (+/- 9.3%) VO2max were measured and related to their ...
T D, Noakes +6 more
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The Effect of Mild Dehydration on One-Hour Creatinine Clearance Rates
Nephron, 1972In 27 normal young men, two consecutive, morning 1-hour creatinine clearance studies, measured on each of two separate days after either no or modest preliminary hydration, were compared with each ...
M J, Preece, J A, Richardson
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Rates of Hospitalization for Dehydration Following Hurricane Sandy in New Jersey
Disaster Medicine and Public Health Preparedness, 2015AbstractObjectiveHurricane Sandy, one of the most destructive natural disasters in New Jersey history, made landfall on October 29, 2012. Prolonged loss of electrical power and extensive infrastructure damage restricted access for many to food and water.
Joel N, Swerdel +3 more
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