where Se is the degree of saturation; q is the volumetric water content ([cm.sup.3] [cm.sup.-3]); [theta]s is the saturated volumetric water content (cm3 [cm.sup.-3]); [theta]r is the residual volumetric water content (cm3 [cm.sup.-3]); a is an empirical parameter ([cm.sup.-1]) whose inverse is often referred to as the air entry value or bubbling pressure; h is the soil water pressure head (cm); and n is a pore-size distribution
parameter affecting the slope of the retention curve.
According to the fitted SWRCs, the pore-size distribution
(PSD) was calculated through the derivation of the SWRCs (d[theta]/ D[PSI]m).
Caption: Figure 4: Pore-size distribution
for 300, 350, and 400 kg/[m.sup.3] of cement content at (a) 0, (b) 60, (c) 120, and (d) 180 cycles.
and mesopore volume ([V.sub.mes]) were determined by Barret-Joyner-Hanlenda (BJH) method.
T Burdine, "Relative permeability calculations from pore-size distribution
data," Transactions of the American Institute of Mining and Metallurgical Engineers, vol.
As for the three [Zn.sub.2]Sn[O.sub.4] samples, the relative wide pore-size distribution
may be mainly contributed to the random and disordered aggregation characteristics of [Zn.sub.2]Sn[O.sub.4] nanocrystals in the products.
Where k is the number of subsystems (Durner, 1994) that form the total pore-size distribution
, and wi represents weighting factors for the subcurves, subject to (0<wi<1, [SIGMA]wi = 1).
The influence of gypsum content on the porosity and pore-size distribution
of cured PFA-lime mixes, Advances in Cement Research 7: 47-45.
By monitoring and specifying pore-size distribution
, the company produces nanostructured materials with performance that far surpasses the carbons used in regular energy storage applications, to support the evolution of next-generation energy storage solutions.
Figure 3 shows the nitrogen adsorption-desorption isotherm and pore-size distribution
curve of manganese ferrite nanospheres.
Drake, L.C.: 1949, Pore-size distribution
in porous materials.
Moldrup P, Olesen T, Yoshikawa S, Komatsu T, Rolston DE (2005) Predictive-descriptive models for gas and solute diffusion coefficients in variably saturated porous media coupled to pore-size distribution