Rotating machine with at least one active magnetic bearing and spaced auxiliary rolling bearings
A technology of electrical stimulation and polymers, applied in drug combination, drug delivery, antipyretics, etc.
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[0169] 1. Fabrication and In Vitro Testing
[0170] Material
[0171] Polyethyleneimine (PEI) solution (M w 750,000), 1-vinylimidazole (1VA) (≥99%), indomethacin (≥99%), polyvinyl alcohol (PVA) (M w 89,000-98,000, 99+% hydrolyzed), acrylic acid (AA) (anhydrous, 99%), N,N'-methylenebisacrylamide (≥99.5%) and potassium persulfate (≥99.0%) are all from (St.Louis, USA) purchase. All other ingredients were of analytical grade and used as received.
[0172] Preparation of polymeric hydrogel pharmaceutical dosage forms
[0173] In order to manufacture the polymeric hydrogel pharmaceutical dosage form according to the invention, the following manufacturing method is used. A 6% polyvinyl alcohol (PVA)-1M sodium hydroxide solution was prepared, to which a polyethyleneimine (PEI) solution and 1-vinylimidazole (1VA) were added to form a mixture. Subsequently, the drug (100 mg - constant throughout all formulations and all instances of drug) was dissolved into the mixture. Acrylic...
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