Im looking for info about semipermeable membranes also practical but mostly theoretical. I would be very happy if anyone could help me. :)
i assume you mean in a biological sense, so try these 2:
Water Transport Across Semipermeable Membranes
http://www.swmed.edu/stars/resources/alpern.ppt (http://www.swmed.edu/stars/resources/alpern.ppt)
and
Membrane semipermeabili
http://www.bernardinello.it/membrane_ing.htm (http://www.bernardinello.it/membrane_ing.htm)
and
Semipermeable Membrane Device Research Society
http://www.chemistry.ucsc.edu/smdrs/ (http://www.chemistry.ucsc.edu/smdrs/)
hope these help.