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63
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38
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Spent Nuclear Fuel (SNF) Project Cask and MCO Helium Purge System Design Review Completion Report Project A.5 and A.6
This report documents the results of the design verification performed on the Cask and Multiple Canister Over-pack (MCO) Helium Purge System. The helium purge system is part of the Spent Nuclear Fuel (SNF) Project Cask Loadout System (CLS) at 100K area. The design verification employed the ''Independent Review Method'' in accordance with Administrative Procedure (AP) EN-6-027-01.
Date:
April 19, 2000
Creator:
ARD, K.E.
Object Type:
Report
System:
The UNT Digital Library
Calorimeter Preamplifier Hybrid Circuit Test Jig
There are two ways in which the testing may be initiated, remotely or locally. If the remote operation is desired, an external TTL level signal must be provided to the test jig with the remotellocal switch on the side of the test jig switched to remote. A logic high will initiate the test. A logic low will terminate the test. In the event that an external signal is connected to the test jig while local operation occurs, the local control takes precedence over remote control. Once a DVT has been locked in the ZIF socket and the DIP switches are selected, the Push-to-Test button may be depressed. Momentarily depressing the button will initiate a test with a minimum 400 ms duration. At the same time a PBCLOCK and PBLATCH pulses will be initiated and the power rails +12V, +8V, and -6V will be ramped to full voltage. The time at which the power rails reach the full voltage is about 13 ms and it is synchronized with bypass capacitors placed on COMP input of U20 and U22 and on the output of U23 voltage regulators. The voltage rails are supplied to a {+-}10% window comparator. A red LED indicates the …
Date:
April 19, 1999
Creator:
Abraham, Benjamin M.
Object Type:
Report
System:
The UNT Digital Library
Development of Basic Housing Systems for Maximum Affordability
The ability to provide safe, habitable, comfortable housing for very low income residents within the target budget of $10,000 presents unique design and construction challenges. However, a number of preliminary conclusions have been inferred as being important concepts relative to the study of affordable housing. The term affordable housing can have many meanings and research is needed to define this explicitly. As it is most often used, affordable housing refers to an economic relationship between the price of housing, household income and current interest rates available from a lending institution. There is no direct relationship between architectural style, construction technology or user needs and the concept of affordability. For any home to be affordable, the home owner must balance the combination of housing needs and desires within the limits of an actual budget. There are many misconceptions that affordable housing must be defined as housing for those who cannot afford the free-market price. The concept of affordable housing must also include a component that recognizes the quality of the housing as an important element of the design and construction. In addition, responses to local climate impacts are necessary and are always part of a regional expression of architectural design. By …
Date:
April 19, 1999
Creator:
Aglan, H.; Gibbons, A.; McQueen, T. M.; Morris, C.; Raines, J. & Wendt, R. L.
Object Type:
Article
System:
The UNT Digital Library
A Dual Channel X-ray Spectrometer for Fast Ignition Research
A new Dual Channel Highly Ordered Pyrolytic Graphite (DC-HOPG) x-ray spectrometer was developed to study laser-generated electron beam transport. The instrument uses a pair of graphite crystals and has the advantage of simultaneously detecting self emission from low-Z materials in first diffraction order and high-Z materials in second order. The emissions from the target are detected using a pair of parallel imaging plates positioned in a such way that the noise from background is minimized and the mosaic focusing is achieved. Initial tests of the diagnostic on Titan laser (I {approx} 10{sup 20} W/cm{sup 2}, {tau} = 0.7 ps) show excellent signal-to-noise ratio (SNR) > 1000 for the low energy channel and SNR > 400 for the high energy channel.
Date:
April 19, 2010
Creator:
Akli, K. U.; Patel, P. K.; Van Maren, R.; Stephens, R. B.; Key, M. H.; Higginson, D. P. et al.
Object Type:
Article
System:
The UNT Digital Library
Car Door Fastening.
Patent for a new and improved car-door fastening. This design "consists in a novel construction and arrangement of a staple, a hook-hasp, key, and a key-plate, whereby several advantages are obtained . . . for securing the sliding doors of box-cars and other railway-cars" (lines 8-14).
Date:
April 19, 1881
Creator:
Alexander, Francis Marion
Object Type:
Patent
System:
The Portal to Texas History
Context-Dependent Prognostics and Health Assessment: A Condition-Based Maintenance Approach That Supports Mission Compliance
In today's manufacturing environment, plants, systems, and equipment are being asked to perform at levels not thought possible a decade ago. The intent is to improve process operations and equipment reliability, availability, and maintainability without costly upgrades. Of course these gains must be achieved without impacting operational performance. Downsizing is also taking its toll on operations. Loss of personnel, particularly those who represent the corporate history, is depleting US industries of their valuable experiential base which has been relied on so heavily in the past. These realizations are causing companies to rethink their condition-based maintenance policies by moving away from reacting to equipment problems to taking a proactive approach by anticipating needs based on market and customer requirements. This paper describes a different approach to condition-based maintenance-context-dependent prognostics and health assessment. This diagnostic capability is developed around a context-dependent model that provides a capability to anticipate impending failures and determine machine performance over a protracted period of time. This prognostic capability links operational requirements to an economic performance model. In this context, a system may provide 100% operability with less than 100% functionality. This paradigm is used to facilitate optimal logistic supply and support.
Date:
April 19, 1999
Creator:
Allgood, G. O. & Kercel, S. W.
Object Type:
Article
System:
The UNT Digital Library
Chordwise and Spanwise Loadings Measured at Low Speed on Large Triangular Wings
Report presenting pressure distributions of three triangular wing models: a wing-alone model, the same wing combined with a body, and a mock-up of a triangular-wing airplane. Results regarding the separation-vortex air flow over triangular wings, general comments regarding the applicability of the study, chordwise pressure distribution, section lift characteristics, center of pressure, and span load distribution are provided.
Date:
April 19, 1949
Creator:
Anderson, Adrien E.
Object Type:
Report
System:
The UNT Digital Library
Feed Trough.
Patent for a new and improved feed trough. This design "is to provide a portable feed rack and trough adapted to hold a quantity of feed and to discharge the same as is found necessary" (lines 10-13). It consists in "a platform mounted on runners and provided at its sides with troughs, bins arranged at the ends of the platforms and provided at the lower ends of their sides with openings" (lines 99-102). It further consists in "slides arranged in . . . recesses and adapted to vary the size of said openings, strips arranged on the outer edges of the inclined bars, and set-screws connecting the strips" (lines 3-7).
Date:
April 19, 1892
Creator:
Anderson, John Stow
Object Type:
Patent
System:
The Portal to Texas History
Apparatus for Cooling Journal-Boxes on Railway-Trains
Patent for an apparatus for cooling journal boxes on trains by sending water to the journal boxes from a water system installed in each car.
Date:
April 19, 1910
Creator:
Andrews, Walter P.
Object Type:
Patent
System:
The Portal to Texas History
Seismic Design and Retrofit of Equipment and Piping
None
Date:
April 19, 2006
Creator:
Antaki, George
Object Type:
Article
System:
The UNT Digital Library
Integrity of Pipes and Vessels Subject to Internal Explosions: an overview
None
Date:
April 19, 2006
Creator:
Antaki, George; McKeel, Charles & Pease, Derrick
Object Type:
Article
System:
The UNT Digital Library
Pu300: A Tool for Measurement of Plutonium Age for Arms Control Transparency via Gamma-Ray Spectroscopy
Pu300 has particular application in the Arms Control Transparency arena, where very sensitive material is often the subject of tests and measurements. In Arms Control Transparency projects, we attempt to measure attributes of material removed from a nuclear weapon without revealing sensitive information about the material. The measured attribute can either be reported directly or compared against a threshold value. The set of attributes that are measured can be used as a fingerprint for the material. One such attribute for plutonium is material age. Age, in this sense, is defined as the amount of time that has passed since americium separation. The Pu300 system consists of a coaxial HPGe detector and a Canberra Inspector multichannel analyzer. The Inspector allows the high resolution spectral information to be limited by adjusting upper and lower level discriminators so only the information between 330keV and 350keV is collected. The fits of the peaks in the gamma-ray spectrum are fed into a physics code to give an age of the material measured. The physics code is based on the buildup of {sup 241}Am from the decay of {sup 241}Pu.
Date:
April 19, 2000
Creator:
Archer, D E; Luke, S J & Parker, W
Object Type:
Article
System:
The UNT Digital Library
Border Security: Immigration Enforcement Between Ports of Entry
This report reviews efforts to combat unauthorized migration across the Southwest border in the nearly three decades since the Immigration Reform and Control Act (IRCA) initiated the modern era in migration control. In reviewing such efforts, the report takes stock of the current state of border security and considers lessons that may be learned about enhanced enforcement at U.S. borders.
Date:
April 19, 2016
Creator:
Argueta, Carla N.
Object Type:
Report
System:
The UNT Digital Library
Nuclear apoJ: A low dose radiation inducible regulator of cell death. Final report for period September 15, 1998 - September 14, 2001
This project was based on preliminary data that was published by Dr. Boothman (Yang et al. 2000) which indicated a strong induction of apoJ gene expression, increased secretion of the protein, and accumulation of an apparently somewhat different form of the apoJ protein in the nucleus of MCF-7 breast carcinoma cells undergoing response to DNA damage. A clone expressing apoJ protein was isolated that was capable of interacting with Ku80, a component of the double strand break repair complex that is essential for the successful repair of rearranging immunoglobulin and T-cell receptor genes as evidenced by failure to produce mature B and T cells in the absence of Ku70. ApoJ clones isolated and characterized by Dr. Boothman bound strongly to a Ku-70 ''bait'' protein. Over-expression of these same clones in a cell line was capable of killing the cell. ApoJ is very strongly induced in many instances of programmed cell death and has been proposed repeatedly to play some sort of effector role in the process. Our principle hypothesis for this study was that the strong induction of the apoJ gene and the particular expression of a nuclear form of the protein was potentially a causal factor in the decision …
Date:
April 19, 2002
Creator:
Aronow, Bruce J.
Object Type:
Report
System:
The UNT Digital Library
L2-3 Pre-LOCE Maneuver Core Safety Analysis
The core safety analyses and reactivity control analyses that have been done to support safe operation of the LOFT reactor in the LOCE pre-blowdown (or pre-LOCE) operating mode (Operating Mode 8) for the L2-3 nuclear loss of coolant experiment are presented. Safety analyses done to support LOFT operation in other operating modes (Modes 5, 6, and 7) with changes in operating conditions or assumptions due to requirements for safe operation of the L2-3 test (changes from conditions or assumptions for previous safety analyses for those operating modes) are also presented. The analyses discussed herein do not include analyses for potential loss of coolant accidents, or for accidents during the LOCE blowdown mode (Mode 9), or for potential radiation releases during LOCE operation.
Date:
April 19, 1979
Creator:
Atkinson, S. A. & Satterwhite, D. G.
Object Type:
Report
System:
The UNT Digital Library
Observation of Decays $B^0\to D_s^{(*)+}\pi^-$ and$B^0\to D_s^{(*)-}K^+$
The authors report the observation of decays B{sup 0} {yields} D{sub s}{sup (*)+} {pi}{sup -} and B{sup 0} {yields} D{sub s}{sup (*)-} K{sup +} in a sample of 230 x 10{sup 6} {Upsilon}(4S) {yields} B{bar B} events recorded with the BABAR detector at the PEP-II asymmetric-energy e{sup +}e{sup -} storage ring. They measure the branching fractions {Beta}(B{sup 0} {yields} D{sub s}{sup +}{pi}{sup -}) = (1.3 {+-} 0.3(stat) {+-} 0.2(syst)) x 10{sup -5}, {Beta}(B{sup 0} {yields} D{sub s}{sup -}K{sup +}) = (2.5 {+-} 0.4(stat) {+-} 0.4(syst)) x 10{sup -5}, {Beta}(B{sup 0} {yields} D*{sub s}{sup +} {pi}{sup -}) = (2.8 {+-} 0.6(stat) {+-} 0.5 (syst)) x 10{sup -5}, and {Beta}(B{sup 0} {yields} D*{sub s}{sup -} K{sup +}) = (2.0 {+-} 0.5(stat) {+-} 0.4(syst)) x 10{sup -5}. The significance of the measurements to differ from zero are 5, 9, 6, and 5 standard deviations, respectively.
Date:
April 19, 2006
Creator:
Aubert, B.
Object Type:
Report
System:
The UNT Digital Library
Observation of $\Upsilon(4S) decays to$\pi^+pi^-\Upsilon(1S)$ and $\pi^+pi^-\Upsilon(1S)$
The authors present the first measurement of {Upsilon}(4S) decays to {pi}{sup +}{pi}{sup -} {Upsilon}(1S) and {pi}{sup +}{pi}{sup -} {Upsilon}(2S) based on a sample of 230 x 10{sup 6} {Upsilon}(4S) mesons collected with the BABAR detector. They measure the product branching fractions {Beta}({Upsilon}(4S) {yields} {pi}{sup +}{pi}{sup -} {Upsilon}(1S)) x {Beta}({Upsilon}(1S) {yields} {mu}{sup +}{mu}{sup -}) = (2.23 {+-} 0.25{sub stat} {+-} 0.27{sub sys}) x 10{sup -6} and {Beta}({Upsilon}(4S) {yields} {pi}{sup +}{pi}{sup -}{Upsilon}(2S)) x {Beta}({Upsilon}(2S) {yields} {mu}{sup +}{mu}{sup -}) = (1.69 {+-} 0.26{sub stat} {+-} 0.20{sub sys}) x 10{sup -6}, from which they derive the partial widths {Lambda}({Upsilon}(4S) {yields} {pi}{sup +}{pi}{sup -} {Upsilon}(1S)) = (1.8 {+-} 0.4) keV and {Lambda}({Upsilon}(4S) {yields} {pi}{sup +}{pi}{sup -}{Upsilon}(2S)) = (2.7 {+-} 0.8) keV.
Date:
April 19, 2006
Creator:
Aubert, B.
Object Type:
Report
System:
The UNT Digital Library
A Study of the DsJ(2317) and DsJ(2460) Mesons in Inclusive ccbar Production near sqrt(s) = 10.6 GeV
A study of the D*{sub sJ}(2317){sup +} and D{sub sJ}(2460){sup +} mesons in inclusive c{bar c} production is presented using 232 fb{sup -1} of data collected by the BABAR experiment near {radical}s = 10.6 GeV. Final states consisting of a D{sub s}{sup +} meson along with one or more {pi}{sup 0}, {pi}{sup {+-}}, or {gamma} particles are considered. Estimates of the mass and limits on the width are provided for both mesons and for the D{sub s1}(2536){sup +} meson. A search is also performed for neutral and doubly-charged partners of the D*{sub sJ}(2317){sup +} meson.
Date:
April 19, 2006
Creator:
Aubert, B.
Object Type:
Report
System:
The UNT Digital Library
Process of Distilling Hydrocarbons
Patent for distilling hydrocarbons from crude petroleum oil.
Date:
April 19, 1921
Creator:
Averill, Willard C., Jr.
Object Type:
Patent
System:
The Portal to Texas History
Treatment of Mined Sulfur.
Patent for a method to improve the free burning properties of mined sulfur by carbonizing the oil and eliminating carbon.
Date:
April 19, 1921
Creator:
Bacon, Raymond Foss, 1880-1954.
Object Type:
Patent
System:
The Portal to Texas History
Treatment of Mined Sulfur.
Patent for heating sulfur under appropriate conditions in order to carbonized oil contained within, allowing stationary sulfur to burn without difficulty or interference from carbon.
Date:
April 19, 1921
Creator:
Bacon, Raymond Foss, 1880-1954.
Object Type:
Patent
System:
The Portal to Texas History
Overview of NEPA Requirements
This report provides an overview of The National Environmental Policy Act (NEPA) requirements. NEPA establishes national environmental policies that apply to the federal government and also prescribes certain procedural requirements for federal agency actions.
Date:
April 19, 2005
Creator:
Baldwin, Pamela
Object Type:
Report
System:
The UNT Digital Library
Cotton-Chopper
Patent for "a cheap and simple machine adapted to chop or hoe cotton and simultaneously plow or hill the same; furthermore, to adapt the chopper to form stands composed of any number of plants and at any distance apart, and, finally, to provide means for raising and lowering the plows out of and into operative position and throwing the chopping mechanism into and out of gear, which means are controlled in a convenient manner by the driver or operator" (lines 10-20).
Date:
April 19, 1892
Creator:
Balshaw, David
Object Type:
Patent
System:
The Portal to Texas History
Coping with High Oil Prices: A Summary of Options
A near tripling in the price of crude oil from March 1999 to the first months of 2000, coupled with other developments, initially brought about sharp increases in the price of home heating oil and diesel fuel, which are essentially the same product. Gasoline prices then increased. These developments brought about discussion of what might be done to mitigate price increases and possible spot shortages, and what might be done to prevent a similar situation in the future.
Date:
April 19, 2000
Creator:
Bamberger, Robert L.; Kumins, Lawrence C. & Lazzari, Salvatore
Object Type:
Report
System:
The UNT Digital Library