Sökning: "farmaci"
Visar resultat 1 - 5 av 519 avhandlingar innehållade ordet farmaci.
1. Mechanical strength of pharmaceutical compacts : Importance of material characteristics, particle characteristics and compaction pressure on interparticulate bonding structure
Sammanfattning : Factors considered important for the interparticulate bonding structure and mechanical strength of pharmaceutical compacts were studied in this thesis.Fractures appear to propagate mainly around rather than through grains during strength testing. LÄS MER
2. Tabletting behaviour of aggregates : Mechanistical conception and modulation by variations in aggregate physical properties
Sammanfattning : The volume reduction mechanisms involved during compression of aggregates prepared from microcrystalline cellulose particles and effects of variations in their physical properties on their compression behaviour and compactability were studied in this thesis.The dominating volume reduction mechanisms during compression of aggregates prepared of MCC were deformation (bulk deformation and local deformation) parallel with densification, and generally the degree of fragmentation of the aggregates was minute. LÄS MER
3. Transport and metabolism of opioid tetrapeptide agonists with a focus on oral and respiratory delivery
Sammanfattning : The clinical development of peptide drugs for oral delivery has often been hindered because of poor transport across the intestinal membranes and degradation in the gastrointestinal tract and liver. Alternative delivery routes through more permeable membranes preferably with less pronounced proteolytic activity, such as the nasal and pulmonary routes, have therefore been considered. LÄS MER
4. Intestinal transport and hepatic extraction of fluvastatin in humans and rats
Sammanfattning : The oral route is the most convenient route of delivering drugs intended to have systemic effects. One of the key variables determining the rate and extent of absorption from the gastrointestinal tract is the intestinal permeability to the drug. LÄS MER
5. The effects of solid state properties on solubility and "in vitro" dissolution behaviour of suspended sparingly soluble drugs
Sammanfattning : The solubility and dissolution behaviour of hydrophobic and hydrophilic sparingly soluble drugs is discussed in this thesis. The roles of varying particle dimensions, disordered (amorphous) solid structures and the coexistence of amorphous and crystalline phases, especially on the surfaces of particles with a crystalline core, are evaluated in this context. LÄS MER
