Results 261 to 270 of about 40,950 (298)

Dynamics of moisture diffusivity in solid triacylglycerol matrices

Food Research International, 2015
The effects of lipid formulation in combination with two crystallization conditions, shearing and non-shearing, on the mechanism of water diffusivity were investigated. Five formulations of lipid which varied in fatty acid compositions, solid fat particles, and emulsifier levels were assessed at 5, 20, and 30°C.
Quynh, Duong, Anastasia, Purgianto, Farnaz, Maleky   +2 more
openaire   +2 more sources

Coupled diffusion of temperature and moisture

1986
The interdependence of heat and moisture in solids has been discussed in [1–3]. It was demonstrated [3] that the effective diffusion constants measured in typical experiments [4] are equal to the diffusion coefficients of the material only in the case of very weak coupling.
G. C. Sih, J. G. Michopoulos, S. C. Chou
openaire   +1 more source

Oxygen Diffusion Characteristics of Gas Diffusion Layers With Moisture

ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels, 2008
The mass transfer characteristics of the gas diffusion layer (GDL) in a polymer electrolyte fuel cell (PEFC) are closely related to the performance. In this study, the oxygen diffusivity of paper and cloth type porous media, which are generally used as GDLs, were measured with respect to liquid water content, using experimental apparatus consisting of ...
Daigo Iwasaki, Yoshio Utaka, Yutaka Tasaki, Shixue Wang   +3 more
openaire   +1 more source

DIFFUSIVE TRANSPORT OF RADON IN A COLUMN OF MOISTURIZED SAND

Health Physics, 1999
Diffusive transport of radon in a moisturized sand column was investigated under well-defined and controlled conditions using a laboratory facility that consists of a cylindrical vessel (height and diameter 2 m) filled with sand. Equilibrium pore-gas radon-concentration profiles in the sand column were measured as a function of depth for several ...
W H, van der Spoel, E R, van der Graaf, R J, de Meijer   +2 more
openaire   +2 more sources

Simulating moisture diffusion in polymers using thermal-moisture analogy

2016 17th International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Microsystems (EuroSimE), 2016
The present paper illustrates moisture diffusion using advanced thermal-moisture analogy approach. Experimental procedure to measure the diffusivity and solubility of epoxy based encapsulation material to be implemented in simulation has been discussed. The moisture weight gain of the sample is measured till its saturated state over time at 5 different
Arun Sasi, Przemyslaw Gromala
openaire   +1 more source

The diffusion of moisture in sorbent solids—I. Diffusion cell and pore diffusion

Journal of the Franklin Institute, 1977
Abstract A complete theory of diffusion of absorbing gases in porous solids is developed. Both ordinary and thermal diffusion are considered. The thermodynamics of irreversible processes is used to derive the general flux equations. A new theoretical model of surface diffusion is presented.
Stanley H Jury, Mark A Pollock, Eul K Kim   +2 more
openaire   +1 more source

Diffusion of moisture into two-phase polymers

Journal of Materials Science, 1989
Absorption d'humidite par un caoutchouc thermoplastique, le Kraton G-1657X, copolymere sequence S-EB-S.
P. M. Jacobs, F. R. Jones
openaire   +1 more source

Moisture diffusion in moist materials

Journal of Engineering Physics, 1968
The first systematic study of the moisture diffusion coefficients of various materials is reported.
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Diffusion of Moisture in Adhesively Bonded Joints

The Journal of Adhesion, 2001
Abstract In this article, diffusion of moisture in adhesively bonded composite joints is discussed and analysed experimentally, analytically and numerically. The experimental studies concentrate on moisture diffusion in adhesive films and in unidirectional and multidirectional composite substrates exposed to two different conditioning environments ...
M. M. Abdel Wahab, I. A. Ashcroft, A. D. Crocombe, S. J. Shaw   +3 more
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Drying Model and Moisture Diffusion Coefficient

Advanced Materials Research, 2012
Varied values of moisture diffusivity estimated using Crank’s equation with different initial moisture content, equilibrium moisture content and sample thickness are often reported. However, a theoretical explanation to this phenomenon is not available to date.
Xian Xi Liu, Jun Ruo Che, Sai Zhang
openaire   +1 more source