cotton fibres were subjected to cleaning process and then characterized for maturity. decrystallisation and swelling processes with caustic soda, ethanol, propan-2-ol and trichloroethene on the native fibres were carried out. the effects of these on the strength and moisture regain were investigated. the activation energies of the dyeings were also analysed with durazol scarlet red 4 bas. the r...

Through the use of combined spectrophotometric and electron microscope techniques, large amplitude swelling of rat liver mitochondria has been described as an ordered sequence of ultrastructural transitions. Prior to the actual swelling, mitochondria undergo two major conformational changes: condensed to twisted form and twisted to orthodox form. This sequence is independent of (a) the nature o...

Swelling agents are hydrophilic crosslinked polymers, which swell from 10 to 1,000 times their own weight when placed in an aqueous medium. Depending on their swelling properties, these materials have been exploited in developing three different classes of materials in pharmaceutical industries, i.e. swellable matrices, superdisintegrants and swelling devices. Since their development, these pha...

A number of agents have been shown to cause swelling of mitochondria in vitro. These include five substances of known intracellular occurrence, namely, thyroxine (l-3)) inorganic phosphate (4, 5), Ca++ (I, 4), reduced glutathione (6), and the unidentified endogenous uncoupling agent, U factor (7). In addition, other agents such as p-chloromcrcuribenzoate (8)) arsenate (5), Zn++ (5), phlorizin (...

A number of agents have been shown to cause swelling of mitochondria in vitro. These include five substances of known intracellular occurrence, namely, thyroxine (l-3)) inorganic phosphate (4, 5), Ca++ (I, 4), reduced glutathione (6), and the unidentified endogenous uncoupling agent, U factor (7). In addition, other agents such as p-chloromcrcuribenzoate (8)) arsenate (5), Zn++ (5), phlorizin (...

The swelling behavior of disintegrating agents produced from microparticles of crosslinked, hydrophilic polymers was investigated as a function of time by using a swelling force measurement apparatus. The swelling force produced due to swelling of poly(acrylic acid-co-2-hydroxyethyl methacrylate) and poly(acrylic acid) was measured in various buffered solutions as a function of time and the swe...

Cotton fibres were subjected to cleaning process and then characterized for maturity. Decrystallisation and swelling processes with caustic soda, ethanol, propan-2-ol and Trichloroethene on the native fibres were carried out. The effects of these on the strength and moisture regain were investigated. The activation energies of the dyeings were also analysed with Durazol Scarlet Red 4 BAS. The r...

where z2tEva p is the energy of vaporization and Vm is the molar volume. From equation (1) it is clear that a smaller difference in 6 between two compounds results in a diminished energy of mixing. A decrease in 2XEmi x gives a higher degree of swelling and eventually complete solubility may result. The applicability of equation (1) has been extended by Hansen 2, who divided the solubility para...

Streptolysins S and 0 from hemolytic streptococci were found to induce mitochondrial swelling and the release of malic dehydrogenase from mitochondria; no other streptococcal products were as active. Mg ++, cyanide, dinitrophenol, bovine serum albumin, and antimycin all inhibited streptolysin-induced mitochondrial swelling; only the latter two agents prevented release of malic dehydrogenase fro...