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The Development and Application of SCDAP-3D
The SCDAP-3D computer code (Coryell 2001) has been developed at the Idaho National Engineering and Environmental Laboratory (INEEL) for the analysis of severe reactor accidents. A prominent feature of SCDAP-3D relative to other versions of the code is its linkage to the state-of-the-art thermal/hydraulic analysis capabilities of RELAP5-3D. Enhancements to the severe accident models include the ability to simulate high burnup and alternative fuel, as well as modifications to support advanced reactor analyses, such as those described by the Department of Energy's Generation IV (GenIV) initiative. Initial development of SCDAP-3D is complete and two widely varying but successful applications of the code are summarized. The first application is to large break loss of coolant accident analysis performed for a reactor with alternative fuel, and the second is a calculation of International Standard Problem 45 (ISP-45) or the QUENCH 6 experiment.
Date:
March 5, 2002
Creator:
Coryell, E. W.; Harvego, E. A. & Siefken, L. J.
Object Type:
Article
System:
The UNT Digital Library
Battlefield Utility of Antipersonnel Landmines and Proposed Alternatives (Analysis in Support of the NATO SAS-023 APM Study)
This study consists of work done in support of the U.S. delegation to the NATO SAS-023 Antipersonnel Landmine Study Group, supplemented by additional work done for the U.S. Office of the Secretary of Defense Antipersonnel Landmine Alternative Concept Exploration Program (Track III). It explores the battlefield utility of current antipersonnel landmines (APL) in both pure and mixed APL/antitank minefields and evaluates the value of military suggested non-materiel alternatives. The historical record is full of examples where the presence (or absence) of antipersonnel landmines made a critical difference in battle. The current generation of military thinkers and writers lack any significant combat experience employing either mixed or antipersonnel minefields, which leaves a critical gap in available expert advice for policy and decision-makers. Because of this lack of experienced-based professional military knowledge, Lawrence Livermore National Laboratory analyzed the employment of antipersonnel landmines in tactical mixed minefields and in protective antipersonnel minefields. The scientific method was employed where hypotheses were generated from the tactics and doctrine of the antipersonnel landmine era and tested in a simulation laboratory. A high-resolution, U.S. Joint Forces Command combat simulation model (the Joint Conflict and Tactical Simulation--JCATS) was used as the laboratory instrument. A realistic European scenario was …
Date:
February 5, 2002
Creator:
Crandley, J. F., Jr.; Greenwalt, R. J., Jr.; Magnoli, D. E. & Randazzo, A. S.
Object Type:
Report
System:
The UNT Digital Library
Today Cedar Hill (Duncanville, Tex.), Vol. 37, No. 25, Ed. 1 Thursday, September 5, 2002
Weekly newspaper published in Duncanville, Texas that includes local Cedar Hill, state, and national news along with advertising.
Date:
September 5, 2002
Creator:
Crooks, Kristi
Object Type:
Newspaper
System:
The Portal to Texas History
Initial test results of an ionization chamber shower detector for a LHC luminosity monitor
A novel, segmented, multi-gap, pressurized gas ionization chamber is being developed for optimization of the luminosity of the LHC. The ionization chambers are to be installed in the front quadrupole and zero degree neutral particle absorbers in the high luminosity IRs and sample the energy deposited near the maxima of the hadronic/electromagnetic showers in these absorbers. The ionization chambers are instrumented with low noise, fast, pulse shaping electronics to be capable of resolving individual bunch crossings at 40 MHz. In this paper we report the initial results of our second test of this instrumentation in an SPS external proton beam. Single 300 GeV protons are used to simulate the hadronic/electromagnetic shower produced by the forward collision products from the interaction regions of the LHC. The capability of instrumentations to measure the luminosity of individual bunches in a 40 MHz bunch train is demonstrated.
Date:
November 5, 2002
Creator:
Datte, P.; Beche, J.-F.; Haguenauer, M.; Manfredi, P.F.; Manghisoni, M.; Millaud, J. et al.
Object Type:
Article
System:
The UNT Digital Library
Federal Research and Development Funding: FY2003
This report provides an overview of Federal Research and Development funding for FY2003.
Date:
November 5, 2002
Creator:
Davey, Michael E.
Object Type:
Report
System:
The UNT Digital Library
Defense Fellows Programs
None
Date:
November 5, 2002
Creator:
DeSerisy, Lloyd
Object Type:
Report
System:
The UNT Digital Library
Dynamic Volume Holography and Optical Information Processing by Raman Scattering
A method of producing holograms of three-dimensional optical pulses is proposed. It is shown that both the amplitude and the phase profile of three-dimensional optical pulse can be stored in dynamic perturbations of a Raman medium, such as plasma. By employing Raman scattering in a nonlinear medium, information carried by a laser pulse can be captured in the form of a slowly propagating low-frequency wave that persists for a time large compared with the pulse duration. If such a hologram is then probed with a short laser pulse, the information stored in the medium can be retrieved in a second scattered electromagnetic wave. The recording and retrieving processes can conserve robustly the pulse shape, thus enabling the recording and retrieving with fidelity of information stored in optical signals. While storing or reading the pulse structure, the optical information can be processed as an analogue or digital signal, which allows simultaneous transformation of three-dimensional continuous images or computing discrete arrays of binary data. By adjusting the phase fronts of the reference pulses, one can also perform focusing, redirecting, and other types of transformation of the output pulses.
Date:
September 5, 2002
Creator:
Dodin, I. Y. & Fisch, N. J.
Object Type:
Report
System:
The UNT Digital Library
The Federal Grand Jury
This report is a brief general description of the federal grand jury, with particular emphasis on its more controversial aspects—relationship of the prosecutor and the grand jury, the rights of grand jury witnesses, grand jury secrecy, and rights of targets of a grand jury investigation.
Date:
February 5, 2002
Creator:
Doyle, Charles
Object Type:
Report
System:
The UNT Digital Library
Assessment of Nonnative Invasive Plants in the DOE Oak Ridge National Environmental Research Park
The Department of Energy (DOE) National Environmental Research Park at Oak Ridge, Tennessee, is composed of second-growth forest stands characteristic of much of the eastern deciduous forest of the Ridge and Valley Province of Tennessee. Human use of natural ecosystems in this region has facilitated the establishment of at least 167 nonnative, invasive plant species on the Research Park. Our objective was to assess the distribution, abundance, impact, and potential for control of the 18 most abundant invasive species on the Research Park. In 2000, field surveys were conducted of 16 management areas on the Research Park (14 Natural Areas, 1 Reference Area, and Walker Branch Watershed) and the Research Park as a whole to acquire qualitative and quantitative data on the distribution and abundance of these taxa. Data from the surveys were used to rank the relative importance of these species using the ''Alien Plant Ranking System, Version 5.1'' developed by the U.S. Geological Survey. Microstegium (Microstegium vimineum) was ranked highest, or most problematic, for the entire Research Park because of its potential impact on natural systems, its tendency to become a management problem, and how difficult it is to control. Microstegium was present in 12 of the 16 …
Date:
November 5, 2002
Creator:
Drake, S. J.
Object Type:
Report
System:
The UNT Digital Library
Oral History Interview with Joe Drastata, August 5, 2002
The National Museum of the Pacific War presents an oral interview with Joe Drastata. Drastata was born in El Campo, Texas on 1 August 1924 and entered the Army Air Forces in March 1943. After receiving initial training at Jefferson Barracks, Missouri he was sent to Fort Bragg, North Carolina where he was assigned to the 65th Troop Carrier Squadron, 403rd Troop Carrier Group. During July 1943 the unit went on board the USAT Maui bound for Australia. Drastata tells of the 28 day trip and describes the King Neptune ceremony when crossing the Equator. He describes the uncomfortable sleeping accommodations coupled with extensive rain and swarms of mosquitoes encountered at Port Moresby, New Guinea. He was assigned to communications assisting in duties that involved flag or light signals, land lines, switchboards and public address systems. The unit moved to various locations including Biak where he recounts an accident that claimed the life of a young officer. On 3 February 1945, the 65th Troop Carrier Squadron dropped paratroopers on the Los Banos prison camp to free the allied captives. Although Drastata was not personally involved in the operation he discusses various facets of this successful operation. He returned to the …
Date:
August 5, 2002
Creator:
Drastata, Joe
Object Type:
Sound
System:
The Portal to Texas History
Oral History Interview with Joe Drastata, August 5, 2002
The National Museum of the Pacific War presents an oral interview with Joe Drastata. Drastata was born in El Campo, Texas on 1 August 1924 and entered the Army Air Forces in March 1943. After receiving initial training at Jefferson Barracks, Missouri he was sent to Fort Bragg, North Carolina where he was assigned to the 65th Troop Carrier Squadron, 403rd Troop Carrier Group. During July 1943 the unit went on board the USAT Maui bound for Australia. Drastata tells of the 28 day trip and describes the King Neptune ceremony when crossing the Equator. He describes the uncomfortable sleeping accommodations coupled with extensive rain and swarms of mosquitoes encountered at Port Moresby, New Guinea. He was assigned to communications assisting in duties that involved flag or light signals, land lines, switchboards and public address systems. The unit moved to various locations including Biak where he recounts an accident that claimed the life of a young officer. On 3 February 1945, the 65th Troop Carrier Squadron dropped paratroopers on the Los Banos prison camp to free the allied captives. Although Drastata was not personally involved in the operation he discusses various facets of this successful operation. He returned to the …
Date:
August 5, 2002
Creator:
Drastata, Joe
Object Type:
Text
System:
The Portal to Texas History
Oxidation resistant alloys, method for producing oxidation resistant alloys
A method for producing oxidation-resistant austenitic alloys for use at temperatures below 800 C. comprising of: providing an alloy comprising, by weight %: 14-18% chromium, 15-18% nickel, 1-3% manganese, 1-2% molybdenum, 2-4% silicon, 0% aluminum and the balance being iron; heating the alloy to 800 C. for between 175-250 hours prior to use in order to form a continuous silicon oxide film and another oxide film. The method provides a means of producing stainless steels with superior oxidation resistance at temperatures above 700 C. at a low cost
Date:
November 5, 2002
Creator:
Dunning, John S. & Alman, David E.
Object Type:
Patent
System:
The UNT Digital Library
Sensors for Screening and Surveillance
Much attention, in fact an entire session at this conference, is being devoted to protecting the United States against human threats--individuals who may pose a danger by their mere presence on US soil. However, tomorrow's terrorists will employ weapons in their attacks, and we must also be diligent in preventing these weapons from reaching their targets. Sensors can play an important role in detecting these weapons before they achieve their desired effects. A sensor system can best be understood as a way of automating search techniques that would normally be carried out by a human's touch and vision senses, or by a dog's sniffing capabilities. The list of potential threats is long, including nuclear, biological, chemical and radiological weapons, and each presents its own challenges. However, any effective system must meet the following requirements: (1) Sensor systems must be operationally practical. Delays must be kept to a minimum. The systems must be safe to operate. Individual privacy and corporate proprietary information must be protected. The systems must be part of a viable concept of operations; i.e., they must provide information that can enable effective, preemptive actions to be taken. (2) Sensors systems must be highly sensitive, providing a low probability …
Date:
March 5, 2002
Creator:
Dye, D. H.
Object Type:
Article
System:
The UNT Digital Library
NATURAL GAS RESOURCES IN DEEP SEDIMENTARY BASINS
From a geological perspective, deep natural gas resources are generally defined as resources occurring in reservoirs at or below 15,000 feet, whereas ultra-deep gas occurs below 25,000 feet. From an operational point of view, ''deep'' is often thought of in a relative sense based on the geologic and engineering knowledge of gas (and oil) resources in a particular area. Deep gas can be found in either conventionally-trapped or unconventional basin-center accumulations that are essentially large single fields having spatial dimensions often exceeding those of conventional fields. Exploration for deep conventional and unconventional basin-center natural gas resources deserves special attention because these resources are widespread and occur in diverse geologic environments. In 1995, the U.S. Geological Survey estimated that 939 TCF of technically recoverable natural gas remained to be discovered or was part of reserve appreciation from known fields in the onshore areas and State waters of the United. Of this USGS resource, nearly 114 trillion cubic feet (Tcf) of technically-recoverable gas remains to be discovered from deep sedimentary basins. Worldwide estimates of deep gas are also high. The U.S. Geological Survey World Petroleum Assessment 2000 Project recently estimated a world mean undiscovered conventional gas resource outside the U.S. of 844 …
Date:
February 5, 2002
Creator:
Dyman, Thaddeus S.; Cook, Troy; Crovelli, Robert A.; Henry, Allison A.; Hester, Timothy C.; Johnson, Ronald C. et al.
Object Type:
Report
System:
The UNT Digital Library
Ecstasy: Actions of the 107th Congress to Control MDMA
Legislation has been proposed in the 107th Congress to combat the use and abuse of Ecstasy (MDMA) and other “club drugs.” In a 2001 survey, 12% of 12th graders reported ever having taken the drug. The Ecstasy Anti-Proliferation Act of 2000, enacted by the 106th Congress, directed the U.S. Sentencing Commission to increase penalties for Ecstasy offenses. As of March 2001, MDMA penalties became more severe than for powder cocaine but less severe than for heroin.
Date:
July 5, 2002
Creator:
Eddy, Mark
Object Type:
Report
System:
The UNT Digital Library
Project Plan for Vertical Lift Machine
This document describes the Project Plan for the development and manufacture of a Vertical Lift Machine. It is assumed by this project plan that the Vertical Lift Machine will be developed, designed, manufactured, and tested by a qualified vendor. LLNL will retain review and approval authority for each step given in this project plan. The Vertical Lift Machine is a single linear axis positioning device capable of lifting objects vertically at controlled rates and positioning them repeatedly at predetermined heights, in relation to other objects suspended from above, for high neutron multiplication experiments. Operation of the machine during the experiments is done remotely. The lift mechanism shall accommodate various platforms (tables) that support the objects to be raised. A frame will support additional subassemblies from above such that the lower subassembly can be raised close to and/or interface with those above. The structure must be stiff and motion of the table linear such that radial alignment is maintained (e.g. concentricity). The safe position for the Vertical Lift Machine is the lift mechanism fully retracted with the subassemblies fully separated. The machine shall reside in this position when not in use. It must return to this safe condition from any position …
Date:
August 5, 2002
Creator:
Ellsworth, G F
Object Type:
Report
System:
The UNT Digital Library
International Criminal Court: Overview and Selected Legal Issues
None
Date:
June 5, 2002
Creator:
Elsea, Jennifer K.
Object Type:
Report
System:
The UNT Digital Library
K (transverse) jet algorithms in hadron colliders: The D0 experience
D0 has implemented and studied a k{sub {perpendicular}} jet algorithm for the first time in a hadron collider. The authors have submitted two physics results for publication: the subjet multiplicity in quark and gluon jets and the central inclusive jet cross section measurements. A third result, a measurement of thrust distributions in jet events, is underway. A combination of measurements using several types of algorithms and samples taken at different center-of-mass energies is desirable to understand and distinguish with higher accuracy between instrumentation and physics effects.
Date:
December 5, 2002
Creator:
Elvira, V. Daniel
Object Type:
Article
System:
The UNT Digital Library
South Texas Catholic (Corpus Christi, Tex.), Vol. 37, No. 7, Ed. 1 Friday, April 5, 2002
Semi-monthly newspaper from Corpus Christi, Texas published by the Diocese of Corpus Christi that includes news of interest to Diocese members along with advertising.
Date:
April 5, 2002
Creator:
Espitia, Paula
Object Type:
Newspaper
System:
The Portal to Texas History
South Texas Catholic (Corpus Christi, Tex.), Vol. 37, No. 13, Ed. 1 Friday, July 5, 2002
Semi-monthly newspaper from Corpus Christi, Texas published by the Diocese of Corpus Christi that includes news of interest to Diocese members along with advertising.
Date:
July 5, 2002
Creator:
Espitia, Paula
Object Type:
Newspaper
System:
The Portal to Texas History
Rate Equation Theory for Island Sizes and Capture Zone Areas in Submonolayer Deposition: Realistic Treatment of Spatial Aspects of Nucleation
Extensive information on the distribution of islands formed during submonolayer deposition is provided by the joint probability distribution (JPD) for island sizes, s, and capture zone areas, A. A key ingredient determining the form of the JPD is the impact of each nucleation event on existing capture zone areas. Combining a realistic characterization of such spatial aspects of nucleation with a factorization ansatz for the JPD, we provide a concise rate equation formulation for the variation with island size of both the capture zone area and the island density.
Date:
December 5, 2002
Creator:
Evans, J. W.; Li, M. & Bartelt, M. C.
Object Type:
Article
System:
The UNT Digital Library
The Canadian Record (Canadian, Tex.), Vol. 112, No. 49, Ed. 1 Thursday, December 5, 2002
Weekly newspaper from Canadian, Texas that includes local, state and national news along with some advertising.
Date:
December 5, 2002
Creator:
Ezzell, Nancy & Brown, Laurie Ezzell
Object Type:
Newspaper
System:
The Portal to Texas History
Mechanisms of CO2 Laser Mitigation of Laser Damage Growth in Fused Silica
Theoretical models for heating, evaporation, material flow, and stress and strain generation accompanying CO{sub 2} laser damage mitigation and surface treatment of fused silica are developed to aid understanding of scaling with process parameters. We find that lateral nonlinear heat transport is an important cooling mechanism, more significant than evaporative cooling. Scaling laws relating experiments with different set of parameters are presented. Transverse conduction, together with the increased thermal conductivity at high temperatures, allows a gentle evaporation regime at low laser intensity in which the rate can be controlled via laser fluence. For higher laser intensity, recoil momentum imparted by rapid evaporation generates pressure, which can lead to transverse flow of the melted material. Only a very thin layer can flow because viscosity increases rapidly with depth. Evaporation and flow are subject to instabilities that can impact surface quality, especially surface flatness, if large areas are processed. Also material flow can heal cracks and improve material quality. Analysis of stress indicates that maximal tensile stresses of order 0.1 GPa, comparable to the tensile strength, can be generated.
Date:
September 5, 2002
Creator:
Feit, M D & Rubenchik, A M
Object Type:
Article
System:
The UNT Digital Library
Oral History Interview with Kenneth Gardner, September 5, 2002
The National Museum of the Pacific War presents an interview with Kenneth Gardner. Gardner joined the Navy in March of 1943. He served as Storekeeper First-Class. In December he deployed to New Hebrides (now Vanuatu), where all supply work was being conducted. Gardner worked in an oil and grease warehouse for the duration of the war. He shares details of his living and working conditions on the island. He was discharged in April of 1946.
Date:
September 5, 2002
Creator:
Gardner, Kenneth
Object Type:
Sound
System:
The Portal to Texas History