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Method and apparatus for injecting a substance into the bloodstream of a subject

Description: An apparatus and method for injecting a substance, such as a radiopharmaceutical, into the bloodstream of a subject is described. The apparatus comprises an injection means, such as a servo controlled syringe, a means for measuring the concentration of that substance in the subject's bloodstream, and means for controlling the injection in response to the measurement so that the concentration of the substance follows a predetermined function of time. The apparatus of the subject invention functi… more
Date: May 29, 1981
Creator: Lambrecht, R. M.; Bennett, G. W.; Duncan, C. C. & Ducote, L. W.
Partner: UNT Libraries Government Documents Department
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Production of super-smooth articles

Description: Super-smooth rounded or formed articles made of thermoplastic materials including various poly(methyl methacrylate) or acrylonitrile-butadiene-styrene copolymers are produced by immersing the articles into a bath, the composition of which is slowly changed with time. The starting composition of the bath is made up of at least one solvent for the polymer and a diluent made up of at least one nonsolvent for the polymer and optional materials which are soluble in the bath. The resulting extremely … more
Date: May 29, 1981
Creator: Duchane, D. V.
Partner: UNT Libraries Government Documents Department
open access

A non-intrusive beam power monitor for high power pulsed or continuous wave lasers

Description: A system and method for monitoring the output of a laser is provided in which the output of a photodiode disposed in the cavity of the laser is used to provide a correlated indication of the laser power. The photodiode is disposed out of the laser beam to view the extraneous light generated in the laser cavity whose intensity has been found to be a direct correlation of the laser beam output power level. Further, the system provides means for monitoring the phase of the laser output beam relati… more
Date: May 29, 1991
Creator: Hawsey, R. A. & Scudiere, M. B.
Partner: UNT Libraries Government Documents Department
open access

A non-intrusive beam power monitor for high power pulsed or continuous wave lasers

Description: A system and method for monitoring the output of a laser is provided in which the output of a photodiode disposed in the cavity of the laser is used to provide a correlated indication of the laser power. The photodiode is disposed out of the laser beam to view the extraneous light generated in the laser cavity whose intensity has been found to be a direct correlation of the laser beam output power level. Further, the system provides means for monitoring the phase of the laser output beam relati… more
Date: May 29, 1991
Creator: Hawsey, R. A. & Scudiere, M. B.
Partner: UNT Libraries Government Documents Department
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