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D-0 End Calorimeter Warm Tube/TeV Dry Air Purge
This Engineering Note studies the design of the Dry Air Purge that is going to flow through the Warm Tube of the End Calorimeter of the D-O Calorimeter. The Tev tubes through the E.C. can be thought of as a cluster of concentric tubes: The Tev tube, the warm (vacuum vessel) tube, 15 layers of superinsulation, the cold (argon vessel) tube, and the Inner Hadronic center support tube. The Dry Air Purge will involve flowing Dry Air through the annular region between the Warm Tube and the Tev Beam Pipe. This air flow is intended to prevent condensation from forming in this region which could turn to ice under cryogenic temperatures. Any ice formed in this gap, could cause serious problems when these tubes are moved. The Air will flow through a Nylon Tube Fitting -1/4-inch I.D. to 1/8-inch male pipe thread (Cole Palmer YB-06465-15) see Drawing MC-295221 (Appendix A). This fitting will be attached to the Nylon 2-inch Tube-Wiper and Seal Assembly which is clamped to the ends of the Warm Tube (Appendix A). This note includes drawings and calculations that explain the setup of the Dry Air Purge and give the required information on the pressure drops through …
Date:
August 14, 1991
Creator:
Leibfritz, J. R.
Object Type:
Report
System:
The UNT Digital Library
3-D Experimental Fracture Analysis at High Temperature
T*e, which is an elastic-plastic fracture parameter based on incremental theory of plasticity, was determined numerically and experimentally. The T*e integral of a tunneling crack in 2024-T3 aluminum, three point bend specimen was obtained through a hybrid analysis of moire interferometry and 3-D elastic-plastic finite element analysis. The results were verified by the good agreement between the experimentally and numerically determined T*e on the specimen surface.
Date:
September 14, 2001
Creator:
Jackson, John H. & Kobayashi, Albert S.
Object Type:
Report
System:
The UNT Digital Library
3-D Microprobe Metrology
This report documents the results of a project undertaken to develop an ultra-high-accuracy measurement capability, which is necessary to address a rising trend toward miniaturized mechanical products exhibiting dramatically reduced product tolerances. A significant improvement in measurement capability is therefore required to insure that a 4:1 ratio can be maintained between product tolerances and measurement uncertainty.
Date:
October 14, 2008
Creator:
Swallow, Kevin
Object Type:
Report
System:
The UNT Digital Library
3-D Seismic Methods for Geothermal Reservoir Exploration and Assessment--Summary
A wide variety of seismic methods covering the spectrum from DC to kilohertz have been employed at one time or the other in geothermal environments. The reasons have varied from exploration for a heat source to attempting to find individual fractures producing hot fluids. For the purposes here we will assume that overall objective of seismic imaging is for siting wells for successful location of permeable pathways (often fracture permeability) that are controlling flow and transport in naturally fractured reservoirs. The application could be for exploration of new resources or for in-fill/step-out drilling in existing fields. In most geothermal environments the challenge has been to separate the ''background'' natural complexity and heterogeneity of the matrix from the fracture/fault heterogeneity controlling the fluid flow. Ideally one not only wants to find the fractures, but the fractures that are controlling the flow of the fluids. Evaluated in this work is current state-of-the-art surface (seismic reflection) and borehole seismic methods (Vertical Seismic Profiling (VSP), Crosswell and Single Well) to locate and quantify geothermal reservoir characteristics. The focus is on active methods; the assumption being that accuracy is needed for successful well siting. Passive methods are useful for exploration and detailed monitoring for in-fill …
Date:
July 14, 2003
Creator:
Majer, E. L.
Object Type:
Report
System:
The UNT Digital Library
9-11 Commission Hearing #4, October 14, 2003, Part 1
Recording of the fourth public hearing held by the National Commission on Terrorist Attacks upon the United States on October 14, 2003 at the Russell Senate Office Building in Washington, D.C. The Commission heard testimony from two sets of witnesses on leadership of U.S. intelligence, intelligence and national security policy, and the effectiveness of warning against transnational threats. This section includes the opening statement from Chairman Kean, and the panels on leadership of U.S. intelligence, and intelligence and the national security policy.
Date:
October 14, 2003
Creator:
National Commission on Terrorist Attacks upon the United States
Object Type:
Video
System:
The UNT Digital Library
9-11 Commission Hearing #4,October 14, 2003, Part 2
Recording of the fourth public hearing held by the National Commission on Terrorist Attacks upon the United States on October 14, 2003 at the Russell Senate Office Building in Washington, D.C. The Commission heard testimony from two sets of witnesses on leadership of U.S. intelligence, intelligence and national security policy, and the effectiveness of warning against transnational threats This section includes the third panel on warning of transnational threats, with testimony from Richard Kerr, Mary O. McCarthy, and John Gannon.
Date:
October 14, 2003
Creator:
National Commission on Terrorist Attacks upon the United States
Object Type:
Video
System:
The UNT Digital Library
9-11 Commission Hearing #10, April 14, 2004, Part 1
Recording of the tenth public hearing held by the National Commission on Terrorist Attacks upon the United States on April 14, 2004 in Washington, D.C. The two-day hearing examined the performance of law enforcement and the Intelligence Community prior to September 11 and evaluated post-9/11 reforms in these areas. In addition to witness testimony, four staff statements were delivered during the course of the proceedings. This section includes the staff statement on the performance of the intelligence community in addition to the panel on Summer 2001 with testimony from George J. Tenet.
Date:
April 14, 2004
Creator:
National Commission on Terrorist Attacks upon the United States
Object Type:
Video
System:
The UNT Digital Library
9-11 Commission Hearing #10, April 14, 2004, Part 2
Recording of the tenth public hearing held by the National Commission on Terrorist Attacks upon the United States on April 14, 2004 in Washington, D.C. The two-day hearing examined the performance of law enforcement and the Intelligence Community prior to September 11 and evaluated post-9/11 reforms in these areas. In addition to witness testimony, four staff statements were delivered during the course of the proceedings. This section includes the panel on preventing future attacks inside the United States, with testimony from John O. Brennan, Lieutenant General Patrick M. Hughes, John S. Pistole, and James L. Pavitt.
Date:
April 14, 2004
Creator:
National Commission on Terrorist Attacks upon the United States
Object Type:
Video
System:
The UNT Digital Library
9-11 Commission Hearing #10, April 14, 2004, Part 3
Recording of the tenth public hearing held by the National Commission on Terrorist Attacks upon the United States on April 14, 2004 in Washington, D.C. The two-day hearing examined the performance of law enforcement and the Intelligence Community prior to September 11 and evaluated post-9/11 reforms in these areas. In addition to witness testimony, four staff statements were delivered during the course of the proceedings. This section includes the staff statement on reforming law enforcement, counterterrorism, and intelligence collection in the United States, in addition to the panel on FBI leadership and initiatives post 9/11 with testimony from Robert S. Muller.
Date:
April 14, 2004
Creator:
National Commission on Terrorist Attacks upon the United States
Object Type:
Video
System:
The UNT Digital Library
19-electron intermediates in the Ligand Substitution of CpW(CO)3with a Lewis Base
Odd electron species are important intermediates in organometallic chemistry, participating in a variety of catalytic and electron-transfer reactions which produce stable even-electron products. While electron deficient 17-electron (17e) radicals have been well characterized, the possible existence of short-lived 19-electron (19e) radicals has been a subject of continuing investigation. 19e radicals have been postulated as intermediates in the photochemical ligand substitution and disproportionation reactions of organometallic dimers containing a single metal-metal bond, yet the reactions of these intermediates on diffusion-limited time scales (ns-{micro}s) have never been directly observed. This study resolves the 19e dynamics in the ligand substitution of 17e radicals CpW(CO){sub 3}{sup {sm_bullet}} (Cp = C{sub 5}H{sub 5}) with the Lewis base P(OMe){sub 3}, providing the first complete description 19e reactivity.
Date:
December 14, 2005
Creator:
Cahoon, James F.; Kling, Matthias F.; Sawyer, Karma R.; Frei,Heinz & Harris, Charles B.
Object Type:
Article
System:
The UNT Digital Library
45-Day safety screen results for single shell tank 241-AP-106, liquid grab samples, riser 1, 30{degrees} and 150{degrees} in conjunction with evaporator campaign 95-1
This is the 45-Day report for the fiscal year 1995 safety screening characterization of three liquid grab samples from single shell tank 241-AP-106. The required analyses are differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA) and appearance (APPR). No analytes exceeded the notification limits, therefore, secondary analyses (RSST, cyanide, and hot persulfate-total organic carbon) were not required. Summary data tables 2, 3 and 4 present the appearance, DSC and TGA data, respectively. Total alpha analyses are not included in this report, because it is not required for liquid grab samples.
Date:
December 14, 1994
Creator:
Miller, G. L.
Object Type:
Report
System:
The UNT Digital Library
The $50 Billion Threshold in the Dodd-Frank Act: Key Findings
This report provides an overview key findings from the newly issued CRS Report R45036, Bank Systemic Risk Regulation: The $50 Billion Threshold in the Dodd-Frank Act. It includes some background information and a list of bills that may also affect the legislation.
Date:
December 14, 2017
Creator:
Labonte, Marc & Perkins, David W.
Object Type:
Report
System:
The UNT Digital Library
53 Per, slow, and Be star pulsations. Lecture 8
Spectral variations of the class of variable stars that seems to have no radial pulsations at all are discussed. Models of the rotation of these stars are considered. (GHT)
Date:
March 14, 1983
Creator:
Cox, A. N.
Object Type:
Article
System:
The UNT Digital Library
100 Areas: (For Technical Progress Letter No. 101), June 4--10
None
Date:
June 14, 1946
Creator:
Jordan, W. E.
Object Type:
Report
System:
The UNT Digital Library
100-NR-2 Apatite Treatability Test: Fall 2010 Tracer Infiltration Test (White Paper)
The primary objectives of the tracer infiltration test were to 1) determine whether field-scale hydraulic properties for the compacted roadbed materials and underlying Hanford fm. sediments comprising the zone of water table fluctuation beneath the site are consistent with estimates based laboratory-scale measurements on core samples and 2) characterize wetting front advancement and distribution of soil moisture achieved for the selected application rate. These primary objectives were met. The test successfully demonstrated that 1) the remaining 2 to 3 ft of compacted roadbed material below the infiltration gallery does not limit infiltration rates to levels that would be expected to eliminate near surface application as a viable amendment delivery approach and 2) the combined aqueous and geophysical monitoring approaches employed at this site, with some operational adjustments based on lessons learned, provides an effective means of assessing wetting front advancement and the distribution of soil moisture achieved for a given solution application. Reasonably good agreement between predicted and observed tracer and moisture front advancement rates was observed. During the first tracer infiltration test, which used a solution application rate of 0.7 cm/hr, tracer arrivals were observed at the water table (10 to 12 ft below the bottom of the infiltration …
Date:
April 14, 2011
Creator:
Vermeul, Vincent R.; Fritz, Brad G.; Fruchter, Jonathan S.; Greenwood, William J.; Johnson, Timothy C.; Horner, Jacob A. et al.
Object Type:
Report
System:
The UNT Digital Library
105-KE basin pilot run relocation
None
Date:
October 14, 1994
Creator:
Crystal, J. B.
Object Type:
Report
System:
The UNT Digital Library
105-KE Isolation Barrier Leak Rate Acceptance Test Report
This Acceptance Test Report (ATR) contains the completed and signed Acceptance Procedure (ATP) for the 105-KE Isolations Barrier Leak Rate Test. The Test Engineer`s log, the completed sections of the ATP in the Appendix for Repeat Testing (Appendix K), the approved WHC J-7s (Appendix H), the data logger files (Appendices T and U), and the post test calibration checks (Appendix V) are included.
Date:
June 14, 1995
Creator:
McCracken, K. J.
Object Type:
Report
System:
The UNT Digital Library
200 Area monthly report, June 1966
None
Date:
July 14, 1966
Creator:
Christy, J. T.
Object Type:
Report
System:
The UNT Digital Library
200 area weekly report
None
Date:
April 14, 1955
Creator:
Christl, R. J.
Object Type:
Report
System:
The UNT Digital Library
234-5 status reports
On July 14, 1949, and office memorandum was written about operations of a reprocessing building on the Hanford Site being suspended due to the mishandling of some plutonium powder. The letter describes the process of decontamination of the building surfaces, and the ventilation of the rooms of that building. It also describes the problem with the ventilation fans due to increased temperature and pressures.
Date:
July 14, 1949
Creator:
Lowe, W. W.
Object Type:
Report
System:
The UNT Digital Library
A 250-GHz CARM (Cyclotron Auto Resonance Maser) oscillator experiment driven by an induction linac
A 250-GHz Cyclotron Auto Resonance Maser (CARM) oscillator has been designed and constructed and will be tested using a 1-kA, 2-MeV electron beam produced by the induction linac at the Accelerator Research Center (ARC) facility of Lawrence Livermore National Laboratory (LLNL). The oscillator circuit was made to operate in the TE{sub 11} mode at ten times cutoff using waveguide Bragg reflectors to create an external cavity Q of 8000. Theory predicts cavity fill times of less than 30 ns (pulse length) and efficiencies approaching 20% is sufficiently low transverse electron velocity spreads are maintained (2%).
Date:
September 14, 1990
Creator:
Caplan, M.; Kulke, B.; Bubp, D.G. (Lawrence Livermore National Lab., CA (USA)); McDermott, D. & Luhmann, N. (California Univ., Los Angeles, CA (USA))
Object Type:
Article
System:
The UNT Digital Library
L-286 Acceptance Test Record
This document provides a detailed account of how the acceptance testing was conducted for Project L-286, ''200E Area Sanitary Water Plant Effluent Stream Reduction''. The testing of the L-286 instrumentation system was conducted under the direct supervision
Date:
January 14, 2000
Creator:
Harmon, B. C.
Object Type:
Report
System:
The UNT Digital Library
300 Area ``X`` Program, Basis ``B``
Attached is a secret draft of 300 Area expansion for the proposed ``X`` Program (600 MWD level for indefinite period) made up of the following: (1) assumptions; (2) present facilities and to what extent inadequate; (3) description of proposed work; (4) advantages to be gained and justification for proposed work; (5) why existing or alternate facilities cannot be used; (6) estimate of cost; and (7) attachments.
Date:
March 14, 1952
Creator:
Wood, V. W.
Object Type:
Report
System:
The UNT Digital Library
300 Degree C GaN/AlGaN Heterojunction Bipolar Transistor
A GaN/AIGaN heterojunction bipolar transistor has been fabricated using C12/Ar dry etching for mesa formation. As the hole concentration increases due to more efficient ionization of the Mg acceptors at elevated temperatures (> 250oC), the device shows improved gain. Future efforts which are briefly summarized. should focus on methods for reducing base resistance.
Date:
October 14, 1998
Creator:
Abernathy, C. R.; Baca, A. G.; Cho, H.; Chow, P. P.; Han, J.; Hichman, R. A. et al.
Object Type:
Article
System:
The UNT Digital Library