1. A vacuole is surrounded by a thin layer of cytoplasm which acts as a semi-permeable membrane.

2. Perception, that is to say, boils down to the passage of sodium, potassium and other ions across semi-permeable membranes.

3. Reverse Osmosis (RO) system. A semipermeable membrane filter technology, can remove the dissolved salt and the organic matter efficiently.

4. When separated by a semipermeable membrane (e. g. a cell membrane) water is lost by osmosis from the hypotonic to the hypertonic solution. Compare hypertonic; isotonic.

5. If we place a semipermeable membrane (like that in a reverse osmosis filter) between sealed bodies of salt water and fresh water, the fresh water will gradually travel through the filter by osmosis.

6. Seawater is forced through a semipermeable membrane that separates salt from water.

7. CONCLUSION Ideal pulsed release behaviors can be achieved by adjusting the coating level and composition of semipermeable membrane to meet the requirement of chronotherapy.

8. Methods Core tablets containing osmotic active agent were prepared by direct compression and spray coated with swelling layer and semipermeable membrane subsequently.

9. The most common type of membrane separation is called reverse osmosis. Seawater is forced through a semipermeable membrane that separates salt from water.

10. Conclusion Ideal pulsed release behaviors can be achieved by adjusting the coating level and composition of semipermeable membrane to meet the requirement of chronotherapy.

11. Therefore, osmotic phenomenon exists in the system of shale and water based fluid,( ) but shale is a non-perfect semipermeable membrane.

12. Aialysis Proteins can be separated from small molecules by dialysis through a semipermeable membrane which has pores that allow small molecules to pass through but not proteins.

13. In the model, gel is considered as a combination of a shell of an elastic semipermeable membrane and a core of a fluid phase.