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Description: Photograph of a man hold a pipe. In the image, the unidentified man is hold a pipe and looking down at the camera with bare trees at the edge of the frame.
Date: unknown
Creator: Clark, Joe
Partner: UNT Libraries Special Collections

[Wade Clark]

Description: Photograph of Wade Clark laying the grass. In the image, Clark, with a pipe in his mouth, is looking at the camera while resting on one arm. More grass and trees can be seen behind him.
Date: unknown
Creator: Clark, Joe
Partner: UNT Libraries Special Collections

[Wade Clark]

Description: Photograph of Wade Clark posing for the camera. In the image, Clark is smoking a pipe in a button-up collared shirt and a couch can be seen behind him.
Date: unknown
Creator: Clark, Joe
Partner: UNT Libraries Special Collections

CSER 97-001 Criticality safety limits for PFP 26-inch vacuum lineremoval

Description: As part of the plutonium stabilization operations in the 234-5Z Building, several runs of 26-inch (26 inches of Hg) process vacuum header, along with associated smaller piping is to be cut into sections and disposed of. This criticality safety evaluation report (CSER) requested by Nirider (1996) addresses the removal of several hundred feet of abandoned 3 and 4 inch nominal diameter vacuum header and associated smaller diameter piping runs located in the duct level of the 234-5Z Building in rooms 262, 263, and 264 as shown in the two attached drawings.
Date: February 14, 1997
Creator: Himes, D. A.
Partner: UNT Libraries Government Documents Department

Subsurface electromagnetic measurement through steel casing

Description: Numerical calculations show that useful information can be obtained in an electromagnetic crosswell survey where one of the wells is cased in steel. Our simple model is based on the assumption of an infinitely long uniform casing embedded in a homogeneous full space. Nevertheless the results indicate that if the pipe characteristics are independently known then the formation signal can be accurately recovered. This is best done at a single frequency where the pipe attenuation is modest. In fact we show that the optimal frequency for formation signal recovery is defined mainly by the pipe parameters and is largely independent of the formation conductivity.
Date: November 1998
Creator: Becker, A. B.; Wang, B. & Lee, K. H.
Partner: UNT Libraries Government Documents Department

LOGARITHMIC SPIRAL LIGHT PIPE FOR SCINTILLATORS

Description: A prccedure is described for designing and making logarithmic spiral light pipes which are to be used in coupling scintillators to photomultipliers in cases where the scintillator must be placed in a strong magnetic field. (C.J.G.)
Date: August 1, 1960
Creator: Kaiser, W.C.; MacKay, A.J. & Managan, W.W.
Partner: UNT Libraries Government Documents Department

Micro-machined heat pipes in silicon MCM substrates

Description: Multichip modules (MCMs) containing power components need a substrate with excellent heat spreading capability both to avoid hot spots and to move dissipated heat toward the system heat sinks. Polycrystalline diamond is an excellent MCM heat spreading substrate but remains several orders of magnitude too expensive and somewhat more difficult to process than conventional mother-board materials. Today`s power MCMs concentrate on moderately priced silicon wafers and aluminum nitride ceramic with their improved thermal conductivity and good thermal expansion match to power semiconductor components, in comparison to traditional alumina and printed wiring board materials. However, even silicon and AlN substrates are challenged by designers` thermal needs. We report on the fabrication of micro-heat pipes embedded in silicon MCM substrates (5{times}5 cm) by the use of micromachined capillary wick structures and hermetic micro-cavities. This passive microstructure results in more than a 5 times improvement in heat spreading capability of the silicon MCM substrate over a large range of power densities and operating temperatures as compared with silicon alone. Thus diamond-like cooling is possible at silicon prices.
Date: December 31, 1995
Creator: Benson, D.A.; Mitchell, R.T.; Tuck, M.R.; Adkins, D.R. & Palmer, D.W.
Partner: UNT Libraries Government Documents Department

Report on ignitability testing of flammable gasses in a core sampling drill string

Description: This document describes the results from testing performed at the Pittsburgh Research Center to determine the effects of an ignition of flammable gasses contained in a core sampling drill string. Testing showed that 1) An ignition of stoichiometric hydrogen and air in a vented 30 or 55 ft length of drill string will not force 28`` or more of water out the bottom of the drill string, and 2) An ignition of this same gas mixture will not rupture a vented or completely sealed drill string.
Date: December 1, 1996
Creator: Witwer, K. S.
Partner: UNT Libraries Government Documents Department