1 Abstract Charles University in Prague, Faculty of Pharmacy in Hradci Králové Department of: Pharmaceutical Technology Consultant: Doc. PharmDr. Zdeňka Šklubalová, Ph.D. Student: Barbora Jonášová Title of Thesis: Flow equation. Sorbitol and magnesium stearate. This thesis describes influence of the addition of magnesium stearate on bulk properties to size fractions of sorbitol for direct compression in the range 0,100 - 0,346 mm. I studied influence of particle size and the size of the opening hopper to the gravitational speed of flow. The dependence of the flow rate (g/s) on the size of the opening conical hopper was modeled by the squares equation Jones-Pilpel. No significant effect of addition of magnesium stearate 0,5% and 1,0% for the exponent equation was found. This model allows the re-estimation of the flow rate with an accuracy about 11% for the size fraction regardless of the amount of added magnesium stearate; for polydisperse MS200 is the deviation of the experimentally determined values of the flow rate of approximately 19%.

Charles University in Prague, Faculty of Pharmacy in Hradci Králové Department of: Pharmaceutical technology Consultant: doc.PharmDr.Zdeňka Šklubalová, Ph.D Student: Hana Čermáková Title of Thesis: Flow equation. Sorbitol In this diploma thesis, the granulometric, bulk and consolidation properties of sorbitol for direct compression are studied. The effect of particle size on bulk and tapped density, angle sprinkles and the flow rate through the model conical hopper with a different orifice diameter are examined. The relationship of the flow rate (g/s) of particle size fractions on the orifice diameter is modelled by the Jones-Pilpel equation with the accuracy of the flow rate prediction approximately 10 %.