Results 251 to 260 of about 578,287 (295)
Some of the next articles are maybe not open access.
Drug Development and Industrial Pharmacy, 1988
AbstractBy grinding, chloramphenicol stearate Form III turns into Form I: then this form tends to become amorphous. So the grinding of both forms produces a “physically activated” form (FI*) with low crystallinity degree and high CAP availability.
FORNI, Flavio +4 more
openaire +1 more source
AbstractBy grinding, chloramphenicol stearate Form III turns into Form I: then this form tends to become amorphous. So the grinding of both forms produces a “physically activated” form (FI*) with low crystallinity degree and high CAP availability.
FORNI, Flavio +4 more
openaire +1 more source
Surfaces and Interfaces, 2020
Abstract The surface of dispersed systems in which the dispersion medium is solid presents a complex morphology that depends on the processes associated with the formation of the solid phase and the dispersion grade of the dispersed phase. Considering that this morphology is a manifestation of the stochastic processes in the disperse phase, a ...
Edgardo J. Suarez-Dominguez +4 more
openaire +1 more source
Abstract The surface of dispersed systems in which the dispersion medium is solid presents a complex morphology that depends on the processes associated with the formation of the solid phase and the dispersion grade of the dispersed phase. Considering that this morphology is a manifestation of the stochastic processes in the disperse phase, a ...
Edgardo J. Suarez-Dominguez +4 more
openaire +1 more source
Surface Tracking of Curcumin Amorphous Solid Dispersions Formulated by Binary Polymers
Journal of Pharmaceutical Sciences, 2020Herein, curcumin amorphous solid dispersions (Cur ASDs) were prepared using binary polymers (Eudragit EPO with polyvinylpyrrolidone K30 [EuD-PVP], Eudragit EPO with hydroxypropyl methylcellulose E50 [EuD-HPMC]) as excipient, and surface tracking of Cur ASDs was mainly addressed.
Na, Fan, Tong, Lu, Jing, Li
openaire +2 more sources
Exact surface-plasmon dispersion relation for spatially dispersive solid with an abrupt surface
Vacuum, 1997Abstract The exact surface-plasmon dispersion relation for a semi-infinite medium with an abrupt surface and an arbitrary wave-vector and frequency dependent dielectric function ϵ(q,ω) is obtained. The result is applied to the models with hydrodynamic and Lindhard dielectric functions and the comparison with other theories and the experiment is ...
openaire +1 more source
Surface composition and contact angle relationships for differently prepared solid dispersions
European Journal of Pharmaceutics and Biopharmaceutics, 2008Solid dispersions are promising drug delivery forms which offer the possibility to disperse a hydrophobic drug in a hydrophilic matrix and thereby improve the dissolution behavior and the bioavailability of the drug. One important aspect and a prerequisite in understanding the drug dissolution mechanism from solid dispersions is a better analytical ...
Carina, Dahlberg +2 more
openaire +2 more sources
Development of Nifedipine Amorphous Solid Dispersion Composed of Surface-Active Agents
Key Engineering Materials, 2021The amorphous solid dispersions (ASDs) containing amino methacrylate copolymer and surface-active agents were prepared to improve the nifedipine (NDP) dissolution. The different types of surface-active agent i.e., polysorbates 80, sodium lauryl sulfate (SLS) and polyethylene glycol (PEG) 400 were used. In order to evaluate the ASDs formulation,powder X-
Sukannika Tubtimsri, Yotsanan Weerapol
openaire +1 more source
Enhancement of the Ionic Conductivity in Solid‐Solid‐Dispersions by Surface Induced Defects
Berichte der Bunsengesellschaft für physikalische Chemie, 1984AbstractThe finding that dispersions of insulators such as alumina or silica in ionic conductors may exhibit considerably enhanced ionic conductivities compared to the pure material, has become a promising topic for optimizing the electric properties in solid state research.
openaire +1 more source
Alternative Solvent-Free Preparation Methods for Felodipine Surface Solid Dispersions
Drug Development and Industrial Pharmacy, 1998Surface solid dispersions were prepared via physical mixture and were either heated in a vacuum dryer or in a microwave oven for different periods of time. The physical state of felodipine in solid dispersions was studied using differential scanning calorimetry and x-ray powder diffractometry.
J, Kerc, S, Srcic, B, Kofler
openaire +2 more sources
Photonic Control of Surface Anchoring on Solid Colloids Dispersed in Liquid Crystals
Langmuir, 2011The anchoring of liquid-crystal (LC) mesogens to the surfaces of colloids is an important factor in determining intercolloidal interactions and the symmetry of the ensuing colloidal assembly in nematic colloids. The dynamic control of surface anchoring could therefore provide a handle to tune the colloidal organization and resulting properties in these
Chandran, S. Prathap +4 more
openaire +2 more sources
Dispersion-Polar Surface Tension Properties of Organic Solids
The Journal of Adhesion, 1970ABSTRACT A new definition for work of adhesion Wa is applied to computationally define the dispersion γs d and polar γs d components of the solid surface tension γs = γs d + γs d for twenty-five low energy substrates. These calculated surface properties are correlated with surface composition and structure.
openaire +1 more source