Abstract: A class of dipeptide derivatives having opiate activity having the formulaTyrosyl--X--Ywherein X is a D- or L-amino acid radical and Y is an amide or substituted amide are disclosed.

Abstract: A portable toilet having an improved valve arrangement for minimizing abrasion of the holding tank inlet seal. The valve arrangement includes a valve member which moves generally normal to a sealing plane defined by the seal when the valve is opened or closed. A wiper element is disposed adjacent the holding tank inlet and is positioned to exert a wiping action on the sealing surface of the valve member when the valve is operated.

Abstract: An improved method of making a solar energy collector is disclosed. The method involves fusing a collector panel to headers using a high frequency magnetic field. End fitments are also fused to the headers. Other improvements in solar energy collectors per se are also disclosed.

Abstract: The disclosure relates to toilets of the kind which incorporate a waste-receiving tank or chamber in which decomposition of waste material takes place. In a preferred embodiment of the invention, the toilet includes an air-manifold assembly upon which waste material collects and which receives heated air for removing moisture from the waste material by evaporation, and perforate baffle means which define air spaces laterally of the mass of waste material, into which heated air can pass for improving efficiency of moisture evaporation. A fan unit is provided for circulating heated air through the air manifold assembly and is readily removable from externally of the toilet housing for facilitating servicing of the toilet.

Abstract: A control valve for a solar heating system is disclosed. The valve has a valve body which defines four chambers disposed end to end. A valve operating rod is movable axially through all four chambers uder motor control and carries a valve member for directing liquid through the valve. In one position of the valve member, incoming liquid is directed to an outlet for connection to a solar collector and liquid returning from the collector can flow through the valve body and back to the swimming pool. In the other position of the valve member, the liquid bypasses the collector and is directed back to the pool while liquid in the collector drains back into the valve body through the outlet and is removed by suction from a drain-down chamber in the valve body.

Abstract: A solar heating system for a swimming pool and the like is disclosed. The system includes a circulation circuit having a pump by which water is withdrawn from the pool, passed through a filter and returned to the pool. A solar collector assembly is provided and has flow and return lines connected in said circuit. The flow line is connected to a venturi unit in the main circuit and a control valve is provided immediately downstream of the venturi unit. When the control valve is closed, water is diverted through the venturi unit and into the solar collector assembly for heating. When the valve is open, the venturi unit induces a suction effect in the flow line which causes the solar collector assembly to be positively drained into the circuit. A vacuum breaker admits air to the collector assembly at this time.

Abstract: A class of tetrapeptides having opiate activity having the formulaH-Tyr-X-Y-Zwherein X is D-amino acid radical; Y is Phe, DPhe, MePhe, DMePhe, Trp or DTrp; Z is Met-OH, Met-ol, Met(O)-ol, Met-OR, Met-NH.sub.2, MetHNR, DMet-OH, DMet-ol, DMet(O)-ol, DMet-OR, DMet-NH.sub.2, DMetNHR, Leu-OH, Leu-ol, Leu-OR, Leu-NH.sub.2, Leu-NHR, DLeu-OH, DLeu-ol, DLeu-OR, DLeu-NH.sub.2 or DLeu-NHR, and R is C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -hydroxyalkyl, are disclosed.

Abstract: A method for preparing novel peptide alcohols exemplified by the reduction of enkephalins and particularly the met-enkephalin to produce pentapeptides and tetrapeptides of the following formulaH-Tyr-DAla-Gly-Phe-Methioninol (1)H-Tyr-DAla-Phe-Methioninol (2)Additional alcohols having a carbon or C-number exceeding or less than 4 or 5 may also be prepared. These compounds are produced by solid phase peptide synthesis developed by R. B. Merrifield in Advances in Enzymology, 32:221 (1969 ) in which the terminal carboxyl group is reduced to the alcohol under the influence of lithium borohydride.

Abstract: The disclosure relates to toilets of the kind which incorporate a waste-receiving tank or chamber in which decomposition of waste material takes place. According to one aspect of the invention, the toilet includes an air-manifold assembly upon which waste material collects and which receives heated air for removing moisture from the waste material by evaporation. Another aspect of the invention provides perforate baffle means in a waste material receiving chamber of the toilet which define air spaces laterally of the mass of waste material into which heated air can pass for improving efficiency of moisture evaporation. According to a still further aspect of the invention the toilet includes a fan unit which is readily removable from externally of the toilet housing for facilitating servicing of the toilet.

Abstract: Co-current absorber for recovering inorganic compounds from plant effluents, particularly useful for recovery of fluorine values as low phosphorus fluosilicic acid from phosphate plant effluents. Improved co-current absorber utilizing multiple cyclonic entrainment separators, co-current flow and renewed droplet surfaces.

Abstract: A two piece portable toilet is described. The toilet includes a bowl unit which defines a toilet bowl having a discharge opening, and a reservoir for a flushing liquid, said reservoir having a normally closed filler opening. A holding tank is normally disposed below and supports the bowl unit. The holding tank has a top wall and defines a waste holding chamber having an inlet opening in said top wall for communication with the discharge opening of the toilet bowl. The chamber also has a normally closed outlet opening. The top wall of the tank is contoured to define a depression around the holding chamber inlet opening and, on opposite sides of the depression, surfaces for supporting said bowl unit. Coupling means normally maintain the bowl unit and holding tank in co-operating relationship when the toilet is in use. The coupling means allow the unit and tank to be separated at appropriate times.

Abstract: A diaphragm pump is described having a pump chamber fitted with an insert. The insert defines a concave end face positioned closely adjacent the diaphragm of the pump. The concave face of the insert and the diaphragm together define an effective portion of the pump chamber which is swept by the diaphragm when the pump is in use. The insert is formed with inlet and outlet passageways through which fluid flows to and from said effective portion of the pump chamber.

Abstract: Substance P, an undecapeptide of mammalian origin, and its analogs containing its essential amino acid sequence, are substantially nonaddictive analgesics when administered to mammals such as humans and other warm-blooded animals by intraperitoneal or intramuscular injection in analgesically effective amounts.

Abstract: The phenylethyl group, ##SPC1##In polymer carriers for the synthesis of peptides and peptide amides, particularly polymer carriers such as styrene-1% divinyl benzene polymers for use in solid phase peptide synthesis.The invention described herein was made in the course of work under a grant or award from the Department of Health, Education and Welfare.