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Orthogonally interdigitated shielded serpentine travelling wave cathod ray tube deflection structure

Description: This invention comprises a new deflection structure which deflects a beam of charged particles, such as an electron beam, includes a serpentine set for transmitting a deflection field, and shielding frame for housing the serpentine set. The serpentine set includes a vertical serpentine deflection element and a horizontal serpentine deflection element. These deflection elements are identical and are interdigitatedly and orthogonally disposed relative to each other, for forming a central transmission passage, through which the electron beam passes and is deflected by the deflection field to minimize drift space signal distortion. The shielding frame includes a plurality of ground blocks and forms an internal serpentine trough within these ground blocks for housing the serpentine set. The deflection structure further includes a plurality of feedthrough connectors which are inserted through the shielding frame and which are electrically connected to the serpentine set.
Date: October 27, 1993
Creator: Hagen, E.C. & Hudson, C.L.
Partner: UNT Libraries Government Documents Department

Method to Remove Uranium/Vanadium Contamination from Groundwater

Description: A process for removing uranium/vanadium-based contaminants from groundwater using a primary in-ground treatment media and a pretreatment media that chemically adjusts the groundwater contaminant to provide for optimum treatment by the primary treatment media.
Date: July 27, 2004
Creator: Metzler, Donald R. & Stanley, Morrison
Partner: UNT Libraries Government Documents Department

Gas-driven microturbine

Description: This paper describes an invention which relates to microtechnology and the fabrication process for developing microelectrical systems. It describes a means for fabricating a gas-driven microturbine capable of providing autonomous propulsion in which the rapidly moving gases are directed through a micromachined turbine to power devices by direct linkage or turbo-electric generators components in a domain ranging from tenths of micrometers to thousands of micrometers.
Date: June 27, 1996
Creator: Sniegowski, J.J.; Rodgers, M.S.; McWhorter, P.J.; Aeschliman, D.P. & Miller, W.M.
Partner: UNT Libraries Government Documents Department

In-Situ Containment and Extraction of Volatile Soil Contaminants

Description: The invention relates to a novel approach to containing and removing toxic waste from a subsurface environment. More specifically the present invention relates to a system for containing and removing volatile toxic chemicals from a subsurface environment using differences in surface and subsurface pressures. The present embodiment generally comprises a deep well, a horizontal tube, at least one injection well, at least one extraction well and a means for containing the waste within the waste zone (in-situ barrier). During operation the deep well air at the bottom of well (which is at a high pressure relative to the land surface as well as relative to the air in the contaminated soil) flows upward through the deep well (or deep well tube). This stream of deep well air is directed into the horizontal tube, down through the injection tube(s) (injection well(s)) and into the contaminate plume where it enhances volatization and/or removal of the contaminants.
Date: December 27, 2005
Creator: Varvel, Mark Darrell
Partner: UNT Libraries Government Documents Department