Although the ameliorating effect of glutathione on corneal deturgescence is known, its chemical mechanism is not understood. An endeavor toward the latter was made by perfusing freshly excised rabbit corneas with selected perfusion fluids, measuring corneal thickness, and assaying the endothelial cells for reduced and oxidized glutathione after 2 and 5 hr of perfusion. Ringer's solution, contai...

An estimate of overall corneal hydration control can be obtained by measuring the rate of thickness recovery following induced corneal swelling; it is expressed as the percent recovery per hour (PRPH). This recovery is nearly, but not exactly, exponential, because there appears to be an initial slower recovery phase lasting about 30-40 minutes. This 30-40 minute period of slower recovery corres...

the aim of the present study was to prepare and evaluate an osmotically controlled mucoadhesive cup-core (ocmc) containing aceclofenac. a special technique was used while preparing an ocmc. stability of ocmc was determined in natural human saliva, and it was found that both ph and device are stable in human saliva. ocmc was evaluated by weight uniformity, thickness, hardness, friability, swelli...

Ultrastructural changes in in vitro ageing spinach chloroplasts have been studied in detail. Prolonged storage caused swelling of the chloroplasts due to the increase in the thickness and spacing of the thylakoid membranes. The increase in the thickness of the membrane is partly accompanied by the release of lipids. Addition of crystalline bovine serum albumin was found to stabilize the membran...

The results of kinetic investigations the orthodichlorbenzene and orthoxylene sorption by high density polyethylene specimens different thickness for 35 days are presented. It is shown that solvents in swelling polymer its plasticization, which expressed changes mechanical characteristics such as ultimate strength, deformation to failure, Young's modulus.

PURPOSE To evaluate the thinnest corneal thickness changes during and after corneal collagen cross-linking treatment with ultraviolet-A irradiation, using hypo-osmolar riboflavin solution in thin corneas. METHODS Eighteen eyes of 18 patients were included in this study. After epithelium removal, iso-osmolar 0.1% riboflavin solution was instilled to the cornea every 3 minutes for 30 minutes. H...

Influence of convective cooling at the extrudate’s free surfaces on its own swelling behaviour is examined numerically when viscous fluids of a Newtonian type are extruded. In circular die extrusion, increasing the surface heat transfer coefficient h increases extrudate’s thickness swell at low Nahme-Griffith number Na; at high Na, however, this trend tends to be reversed. With annular dies, a ...

The edible film is an alternative that can be used as eco-friendly packaging material (biodegradable) a plastic substitute. in making films glucomannan, which dissolve easily but less elastic. development of the necessary edibles applied to foodstuffs requires combination ingredients are easy water. These materials derived from hydrocolloids or polysaccharides. research obtain formulated glucom...

soil is known as the base material for many structure, on the other hand, some soils cause problems for some structures such as roads. some types of soils absorb moisture and swell then they may shrink when losing water. the changes of moisture in these soil samples cause changes their volume and pressure to layers of the pavement and eventually leads to destruction of roads. therefore, it is n...

The paper presents the results of studies effect stevia powder on quality gluten-free cookies with a complete replacement sugar in recipe. were made from mixture rice and corn flour (40/60). Margarine or vegetable oil used as fat components. Stevia was different amounts: 1.0; 2.0; 3.0%. Cookies assessed by organoleptic indicators, physical characteristics (diameter, thickness), moisture, swelli...