expansive behavior is usually observed in soils, which contain fractions of clay minerals in their composition. water absorption of clay particles and change of natural water content of soil up to plastic limit and down to shrinkage limit will cause significant volume change in expansive soils and will result in severe damages to the structures, buildings and foundations. swelling potential is ...

A total of 50 pairs of pig eyes was exsmined by meam of ultraPound pachymetry (&h-Pen, Mentor and DGH-Pachette 500, Technomed). The comeal thickness was de&m&d inunediately ai?er em~~leation and after 1) storage in a moist chamber; 2) storage io aqus bide&; 3) Dholoablation with the excimer-laser. l&.&The swelling of different almeas underlied high fluctuations, whereas the differmca between th...

expansible soils are those which will suffer considerable swelling and volume change when subjected to water. the resulting swelling pressure may cause complete destruction of such light structures as irrigation canal linings, floor slabs, etc. based upon previous investigations, swelling of clayey soils has been blamed for failure of many irrigation canals in iran and in other countries of the...

We investigated the swelling behavior and density distributions of polyion segments and multivalent counterions in polyelectrolyte brushes within a primitive model that represents both polyion segments and salt ions as charged spheres and the solvent as a continuous dielectric medium. The numerical performance of a previously proposed nonlocal density functional theory (NLDFT) was tested with M...

Hooked apex stolons and initial swelling stolons of potato plants were treated with 3 x 10-8 mol l-1 jasmonic acid (JA) to study the effect of this compound on histology, cell expansion and tissue differentiation. In hooked apex stolons, JA application increased the meristem thickness and reduced the length of the leaf primordia, whereas in initial swelling stolons narrowing of the apical regio...

A total of 50 pairs of pig eyes was exsmined by meam of ultraPound pachymetry (&h-Pen, Mentor and DGH-Pachette 500, Technomed). The comeal thickness was de&m&d inunediately ai?er em~~leation and after 1) storage in a moist chamber; 2) storage io aqus bide&; 3) Dholoablation with the excimer-laser. l&.&The swelling of different almeas underlied high fluctuations, whereas the differmca between th...

expansive soils can be found in many parts of the world particularly in arid and semi-arid regions. these soilspose a significant hazard to civil engineering structures due to its high swelling and shrinkage potential. this paperpresents the results of an experimental program developed to investigate the effect of cyclic drying and wetting on theswelling potential of expansive soils with variou...

e have been studying the phenomenon of thickness swell in woodbased composites as part of our overall research program to address composite product manufacture and performance (Xu and Winistorfer 1995a, 1995b; Wang and Winistorfer 2000a, 2001). We purport that one of the key variables in understanding the thickness swell phenomenon is recognition of the density profile through the panel thickne...

Tanaka’s approach to swelling kinetics of a solid gel sphere is extended to a sphericalmicrogel shell. The boundary condition at the inner surface is obtained from the minimization of shear elastic energy. Temporal evolution of a shell is represented in a form of expansion over eigenfunctions of the corresponding diffusion equation. The swelling of Tanaka’s solid spherical gel is recovered as a...

For improving bioavailability in controlled release fashion and to circumvent the hepatic first pass effect of glipizide mucoadhesive buccal films of glipizide were prepared by solvent casting technique. Buccal films were prepared using hydroxy propylmethylcellulose, sodium carboxymethylcellulose, carbopol934P and Eudragit RL-100. Films were evaluated for their weight, thickness, surface pH, sw...