Ti:Sapphire (Ti:Sa) was initially proposed and demonstrated as a near-infrared gain medium in 1982, and was commercialized by Spectra-Physics in 1988 with the launch of a continuous-wave laser. Th is was followed in 1990 by a picosecond mode-locked oscillator, and in 1991 with a femtosecond version. Soon aft er this, the whole ultrafast research community, which until then had been using visibl...

The aim of this study was to develop an extended-release tablet formulation using a new in situ cross-linking method. The effects of polyvalent cations on theophylline release from tablets made with the polyanionic polymers sodium alginate and sodium carboxymethylcellulose, were investigated. Different miliequivalents of the di and tri-valent cation, Ca2+ and Al3+, were added to tablet form...

New and exotic ground states of magnetic materials are highly sought after extensively studied for the insights they provide into thermodynamics disorder fundamental interactions. By controlling crystal structure an appropriate lattice, it is possible to cause strong exchange interactions sum zero so be frustrated. Due presence this frustration, lowest energy configuration that results may cruc...

The aim of this study was to develop an extended-release tablet formulation using a new in situ cross-linking method. The effects of polyvalent cations on theophylline release from tablets made with the polyanionic polymers sodium alginate and sodium carboxymethylcellulose, were investigated. Different miliequivalents of the di and tri-valent cation, Ca2+ and Al3+, were added to tablet form...