Results 221 to 230 of about 801,510 (241)
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Journal of Applied Meteorology, 1996
Theoretical analysis shows that when water activity is larger than its threshold value and the dry radius of a particle is larger than 0.005 μm, the deviation of curvature correction from unity can be accurately represented by the product of two terms, with one term strongly depending upon water activity and the other depending upon dry radius ...
Shuowen Yang, William R. Cotton
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Theoretical analysis shows that when water activity is larger than its threshold value and the dry radius of a particle is larger than 0.005 μm, the deviation of curvature correction from unity can be accurately represented by the product of two terms, with one term strongly depending upon water activity and the other depending upon dry radius ...
Shuowen Yang, William R. Cotton
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30—HEAT AND MOISTURE EXCHANGE IN WOOL BEDS: EQUILIBRIUM THEORY IN THE HYGROSCOPIC RANGE
The Journal of The Textile Institute, 1972Cassie's theory of propagation of heat and moisture changes in beds of wool fibres is re-examined by means of the method of characteristics. Substantial differences result in the predictions of the theory by treating the coefficients of the pertinent differential equations as functions of the dependent variables rather than as constants.
P. Nordon, N. W. Bainbridge
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Journal of Food Process Engineering, 2017
AbstractThe hygroscopic behavior of microcapsules of antioxidant extract of defatted passion fruit seed, produced using spray drying technique, was analyzed at 20 and 40 °C by the static method with saturated saline solutions. The isosteric heat of sorption of the microcapsules, concentration of phenolic compounds and piceatannol, and the antioxidant ...
Marcos Vieira da Silva +4 more
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AbstractThe hygroscopic behavior of microcapsules of antioxidant extract of defatted passion fruit seed, produced using spray drying technique, was analyzed at 20 and 40 °C by the static method with saturated saline solutions. The isosteric heat of sorption of the microcapsules, concentration of phenolic compounds and piceatannol, and the antioxidant ...
Marcos Vieira da Silva +4 more
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Food and Bioproducts Processing, 2019
Abstract The aim behind this work is to demonstrate and validate a predictive experimental model of the thermophysical behaviors of the three argan products, leaves, pulps and fruits, using the experimental determination of sorption isotherms. They constitute an important information source to establish the stability of the products of argan and ...
Haytem Moussaoui +4 more
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Abstract The aim behind this work is to demonstrate and validate a predictive experimental model of the thermophysical behaviors of the three argan products, leaves, pulps and fruits, using the experimental determination of sorption isotherms. They constitute an important information source to establish the stability of the products of argan and ...
Haytem Moussaoui +4 more
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HYGROSCOPIC EQUILIBRIUM AND TEXTURE OF FREEZE-DRIED FOODS
1967Abstract : Improved methodology for the objective evaluation of food texture was applied to the measurement of the textural parameters of special freeze-dried foods which were storage-equilibrated under different relative humidity conditions. The foods included pre-cooked freeze-dried beef, laminated freeze- dried products in the form of bite-size ...
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Pharmaceutical Development and Technology, 2005
The behavior of moisture gain and equilibrium moisture content (EMC) was determined for 30 drug substances at relative humidities (RH) ranging from 11% to 93%. Based on the results, the drugs were categorized into different classes, following the classification system proposed by Callahan et al.
N A, Visalakshi +3 more
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The behavior of moisture gain and equilibrium moisture content (EMC) was determined for 30 drug substances at relative humidities (RH) ranging from 11% to 93%. Based on the results, the drugs were categorized into different classes, following the classification system proposed by Callahan et al.
N A, Visalakshi +3 more
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Effects of Non-Equilibrium Hygroscopic Growth of (NH4)2SO4 on Dry Deposition to Water Surfaces
Environmental Science & Technology, 1998Growth of hygroscopic aerosols near water surfaces is believed to enhance dry deposition rates, which are a strong function of particle size. Previous dry deposition models estimate hygroscopic growth by assuming equilibrium between aerosols and water vapor (Williams, R. M. Atmos. Environ. 1982, 16, 1933-1938).
Maria J. Zufall +2 more
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Journal of Aerosol Science, 2006
Abstract The effect of surface tension (the Kelvin effect) on the equilibrium radius of an aqueous solution drop at fractional relative humidity h less than unity is analyzed mathematically. Expressions for the lowest-order corrections to the equilibrium radius and radius ratio (relative to the volume-equivalent dry radius r dry ) due to ...
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Abstract The effect of surface tension (the Kelvin effect) on the equilibrium radius of an aqueous solution drop at fractional relative humidity h less than unity is analyzed mathematically. Expressions for the lowest-order corrections to the equilibrium radius and radius ratio (relative to the volume-equivalent dry radius r dry ) due to ...
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Journal of Geophysical Research: Atmospheres, 2008
The equilibrium hygroscopic behavior of an aqueous solution drop is investigated using the Köhler model to relate the radius ratio ξ ≡ r/rdry, where rdry is the volume‐equivalent dry radius, and the fractional relative humidity h. The Köhler equation is derived and results obtained from it are presented for three situations: when the effect of surface ...
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The equilibrium hygroscopic behavior of an aqueous solution drop is investigated using the Köhler model to relate the radius ratio ξ ≡ r/rdry, where rdry is the volume‐equivalent dry radius, and the fractional relative humidity h. The Köhler equation is derived and results obtained from it are presented for three situations: when the effect of surface ...
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2013
The adsorption equilibrium of water vapor on different adsorbent materials has been studied. Small grains of commercial activated carbon and alumina, with a diameter of d(g) = 1.5 x 10(-3) m, were impregnated with a hygroscopic salt (calcium chloride) to improve the performance of these materials. The main characteristics of the new composite materials
Ioan Solomon +6 more
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The adsorption equilibrium of water vapor on different adsorbent materials has been studied. Small grains of commercial activated carbon and alumina, with a diameter of d(g) = 1.5 x 10(-3) m, were impregnated with a hygroscopic salt (calcium chloride) to improve the performance of these materials. The main characteristics of the new composite materials
Ioan Solomon +6 more
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