Abstract: A railcar shove light for attachment to a railcar rear coupler, the railcar shove light incorporating a turbine; a turbine case having a compressed air input port and an air output port, the turbine being rotatably mounted within the turbine case; an electrical alternator; a rotary drive linkage interconnecting the turbine and the electrical alternator; an array of electrical light emitters; electrical wires interconnecting the electrical light emitters and the electrical alternator; a light case housing the turbine, the turbine case, the alternator, the drive linkage, and the light emitter; and incorporating a brake line connectable air conduit for supplying and driving the turbine; the light case being mounted to a support post having lower end coupler engaging pin.

Abstract: A railcar shove light for attachment to a railcar rear coupler, the railcar shove light incorporating a turbine; a turbine case having a compressed air input port and an air output port, the turbine being rotatably mounted within the turbine case; an electrical alternator; a rotary drive linkage interconnecting the turbine and the electrical alternator; an array of electrical light emitters; electrical wires interconnecting the electrical light emitters and the electrical alternator; a light case housing the turbine, the turbine case, the alternator, the drive linkage, and the light emitter; and incorporating a brake line connectable air conduit for supplying and driving the turbine; the light case being mounted to a support post having lower end coupler engaging pin.

Abstract: In an electromagnetic propagating antenna circumferential groove disposed in an MWD resistivity tool mandrel and normally sealed with an epoxy resin non-conducting material forming an annular ring disposed in each of the plurality of circumferential grooves through which the electromagnetic energy from the antenna coil will propagate from the mandrel, each of the circumferential grooves comprises a pair of sidewalls interconnected by an annular flat base portion, each of the sidewalls further having disposed therein a plurality of circumferentially-spaced and longitudinally-disposed slots of uniform size having an open end communicating with each of the sidewalls and a closed end terminating longitudinally spaced from each of the sidewalls for forming a "zipper slot" configuration to the plurality of circumferential grooves, wherein the surface area of all of the plurality of zipper slots is preselected for cooperating with the surface area of each of the circumferential grooves for increasing the surface are

Abstract: A method and sample kit for the preparation of .sup.99m Tc-labeled red blood cells in a closed, sterile system. A partially evacuated tube, containing a freeze-dried stannous citrate formulation with heparin as an anticoagulant, allows whole blood to be automatically drawn from the patient. The radioisotope is added at the end of the labeling sequence to minimize operator exposure. Consistent 97% yields in 20 minutes are obtained with small blood samples. Freeze-dried kits have remained stable after five months.