Abstract: A method for treating schizophrenia in human patients by hemoperfusion using hemoperfusion of the patient's blood through a charcoal cartridge in a manner for selective removal of molecules is disclosed. The method may use known hemoperfusion cartridges for a heretofore completely unappreciated application and has the advantages of lesser side effects and easier implementation than other known methods of treatment.

Abstract: A method and apparatus for controlling electric current in loads that are essentially inductive, such that sparking and "ringing" current problems are reduced or eliminated. The circuit apparatus employs a pair of solid state switches (each of which switch may be an array of connected or parallel solid state switching devices such as transistors) and means for controlling those switches such that a power supply supplying two d.c. voltages (e.g. positive 150 volts d.c. and negative 150 volts d.c.) at low resistance may be connected across an essentially inductive load (e.g. a 6 gauge wire loop one hundred meters in diameter) alternatively and such that the first solid state switch is turned off and the second is turned on such that both are not on at the same time but the first turned on and the other on in less time than the inductive time constant (L/R) so that the load is essentially always presented with a low resistance path across its input.

Abstract: Bis-(polypeptide) derivatives represented by the formulae: ##STR1## wherein: X is glycine or a chiral residue of a D-amino acid selected from the group consisting of D-alanine, D-leucine, D-isoleucine, D-valine, D-norvaline, D-phenylalanine, D-tyrosine, D-tryptophan, D-serine, D-threonine, D-methionine, D-glutamic acid, D-glutamine, D-aspartic acid, D-asparagine, D-lysine, D-proline, D-histidine and D-arginine; Y a residue of methionine or leucine and Z is selected from the group consisting of hydroxy, amino, loweralkylamine, diloweralkylamino and loweralkoxy; each R.sub.1 is hydrogen or fluorine and the pharmaceutically acceptable salts thereof; intermediates useful in making the novel pentapeptides and pharmaceutical compositions and methods employing them.