A REVERSE OSMOSIS MEMBRANE OF HIGH UREA NASA Case No. ARC-10980-1 * Japan, Great Britain, Address inquiries to: Corresponding to U.S. Patent No. 4,199,448 Filed 6-9-76 Issued 4-22-80 Polymeric membranes suitable for use in reverse osmosis water purification because of their high urea and salt rejection properties are prepared by generating a plasma of an unsaturated hydrocarbon monomer and nitrogen gas from an electrical source and forming a polymeric membrane by depositing a polymer of said unsaturated monomer from said plasma onto a substrate, such that nitrogen from the nitrogen gas is incorporated within the polymer in a chemically combined form. *Japanese manufacturing rights exclusively licensed to Japan Engineering Development Company. See page 23 for address. All other foreign patent rights available from NASA. PLASTIC LENS ANTIREFLECTION COATING NASA Case No. ARC-10983-1 Address inquiries to: No Corresponding U.S. Patent The present invention relates to a method for coating plastic lenses, such as injection molded polymethylmethacrylate and polystyrene lenses, with one or more layers of an antireflection coating. The coating is deposited onto the lenses in a low temperature plasma. Preferably, the antireflection coating comprises a layer of polymerized perfluorobutene-2 which has been formed in situ onto the plastic lenses by the polymerization of a plasma of perfluorobutene-2 An apparatus for performing electrophoresis and a multiple-sample applicator for use therewith. Electrophoresis is a physical process in which electrically charged molecules and colloidal particles, upon the application of a DC current, migrate along a gel or a membrane that is wetted with an electrolyte. If a membrane is used, its middle section is kept in tension horizontally above an electrolyte tank, while the ends of the membrane hang down into the electrolyte. If a gel is used, it is held in a tray which is placed on a colling plate, and wicks make contact with the electrolyte. The tank has unique protected electrodes for conducting the DC current. A multiple-sample applicator is provided which coacts with a novel tank cover to permit an operator either to depress a single button, thus causing multiple samples to be deposited on the gel or on the membrane simultaneously, or to depress one or more sample applicators separately by means of a separate button for each applicator. BIOMEDICAL ULTRASONOSCOPE NASA Case No. ARC-10994-1 Address inquiries to: Ames Research Center Corresponding to U.S. Patent No. 4,156,304 Filed 9-29-77 Issued 5-29-79 The combination of a "C" mode scan electronics in a portable, battery powered bio-medical ultrasonoscope having “A” and “M” mode scan electronics. The "C" mode scan electronics comprises a plurality of transducer elements arranged in a row and adapted to be positioned on the skin of the patient's body for converting a pulsed electrical signal to a pulsed ultrasonic signal, radiating the ultrasonic signal into the patient's body, picking up the echos reflected from interfaces in the patient's body and converting the echos to electrical signals; a plurality of transmitters, each transmitter being coupled to a respective transducer for transmitting a pulsed electrical signal thereto and for transmitting the converted electrical echo signals directly to the receiver, a sequencer connected between the clock generator and the plurality of transmitters and responsive to the clock pulses for firing the transmitters in cyclic order; and a staircase voltage generator connected between the clock generator and the Y axis input of the cathode ray tube for generating a staircase voltage having steps synchronized by the clock pulses. EKG AND ULTRASONOSCOPE DISPLAY NASA Case No. ARC-10994-2 Address inquiries to: Corresponding to U.S. Patent No. 4,154,230 Filed 9-30-76 Issued 5-15-79 A system is disclosed which permits simultaneous display of an EKG waveform in real time in conjunction with a two-dimensional cross-sectional image of the heart, so that the EKG waveform can be directly compared with dimensional changes in the heart. The apparatus of the invention includes an ultrasonoscope for producing a C-scan cross-sectional image of the heart. An EKG monitor circuit along with EKG logic circuitry is combined with the ultrasonoscope circuitry to produce on the same oscilloscope screen a continuous vertical trace showing the EKG waveform simultaneously with the heart image. The logic circuitry controls the oscilloscope display such that the display of both heart and EKG waveforms occurs on a real time basis. |