Abstract: The present invention relates to a method for removing neoplastic cells from a mixed cellular composition, which is outside of a living organism, by using a virus which selectively infect and kill neoplastic cell. A variety of viruses can be used in this method to remove neoplastic cells for different purposes, for example, to purge hematopoietic stem cells prior to transplantation. Also provided are compositions prepared according to this method, and kits comprising a combination of viruses which are useful in this invention.

Abstract: A wheelchair ramp assembly (20) is disclosed. The wheelchair ramp assembly includes a frame attachable to a vehicle having a floor, a platform coupled to a portion of the frame, a ramp having a weight, and a reciprocating mechanism disposed between the ramp and the platform coupled to a portion of the frame, a ramp having a weight, and a reciprocating mechanism disposed between the ramp and the platform for reciprocating the ramp between a deployed position and a stowed position in response to a force. The reciprocating mechanism counterbalancing the weight of the ramp during actuation of the ramp between the deployed and stowed positions to reduce the force required to reciprocate the ramp between the deployed and stowed positions.

Abstract: A process for the recovery of substantially pure zirconium values from zircon sand which also contains Ra, U, Hf, Pb and other metal values, comprising contacting zircon sand in a chlorinator with a chlorination medium to form an off-gas stream containing chlorides of Zr, Hf, Si, and tract U. The off-gas stream is passed to a condenser to remove volatile Si chlorides and thereby provide a product stream containing condensed chlorides of Zr, Hf and tract U, treating the product stream in acidic aqueous medium in a separation stage to separate the principal Hf values from the principal Zr values. Adjusting the pH of the resulting effluent to between about 3 to about 7 in a second stage to precipitate the trace U values. The residue stream is treated by(A) leaching with an acidic aqueous system to solubilize the trace Ra, Pb and other metal values while settling out the unreacted zircon sand and chlorination medium, and contacting the resultant leach liquor first with Ba++ ions and then with SO.sub.

Abstract: A dispenser apparatus for dispensing a portion of the contents from compressible tubular containers such as those used for toothpaste includes a plastic housing member having one portion designed for the receipt of an air pressure pump and associated linkage, and a second outward portion in communication with the air pressure pump but otherwise sealed, and a front panel portion hinged to the remainder of the housing for selectively opening and closing the second outward portion so as to define a sealed chamber. A tubular container such as a toothpaste tube is placed in the sealed chamber and the side walls of the tube are compressed by the introduction of air pressure into the sealed chamber. The bottom surface or wall of the housing includes an internally threaded outlet which is rigidly secured to the housing and which is suitably designed to receive the threaded end of the tubular container such that when one tube is empty, it may be unscrewed and a new tube screwed into this outlet.

Abstract: For a flower pot having a plurality of radially spaced holes in the bottom thereof, an interlocking saucer having a plurality of radially spaced fastener studs projecting from the bottom thereof. The fastener studs define a pot supporting plane located at least 0.1 inch (2.5mm) above the bottom of the saucer and include angled arms having a pot retaining side inclined at a greater angle than the opposite side of the arm. The fastener studs interlockingly fit with the corresponding holes of the flower pot to removably interconnect the saucer thereto.