1. Which of these is NOT a derivative of the higuchi equation?
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2. Which of these defines POROSITY?
- path length of pores
- frequency of pores
- size of pores
3. Which of these processes is the rate controlling step in the diffusion model?
- diffusion across boundary layer
- diffusion through the membrane
- dissolution from drug particles to molecules
- diffusion into the bulk
4. Which of these is diffusion through polymer (Dp) not dependant on?
- Surface area
- diffusion coefficient through liquid pores
5. In release rate slab geometry, which of these are not used in the dMt/dt equation?
- diffusion coefficient in polymer membrane
- partition coefficient between membrane and reservoir
- Total surface area