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97-ERD-022 final report: Supernova on Nova
This is the final year of the 3-year LDRD-ERD involving Lasers, D&NT, Physics, and ILSA to develope astrophysics experiments on intense lasers such as the Nova and Gekko lasers. During this 3 year period, we have developed a highly successful experiment probing the hydrodynamics of the explosion phase of core-collapse supernovae, which occurs during the first ~3 hours after core collapse. This was in collaboration with the Univ. of Arizona and CEA/Saclay. We also developed a very successful experiment to probe the hydrodynamics of the later time, young remnant phase, meaning the first ~10-20 years after core collapse. This was in collaboration with the Univ. of Michigan and Univ. of Colorado. Finally, we developed during the final year an exquisite experiment to probe the dynamics of radiative, high Mach number astrophysical jets, in collaboration with the Univ. of Maryland and Osaka Univ. Each experiment has received very high visibility, with a multitude of publications, both in the technical journals (most importantly, the astrophysical journals) and in the popular press. The attached publication list shows 25 papers published or submitted to technical journals, 5 articles appearing in the popular press (including a cover story of Sky and Telescope), and 65 conference …
Date:
March 11, 1999
Creator:
Remington, B. A.
Object Type:
Report
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 123, No. 41, Ed. 1 Thursday, March 11, 1999
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
March 11, 1999
Creator:
Lucas, Donnie A.
Object Type:
Newspaper
System:
The Portal to Texas History
Altus Times (Altus, Okla.), Vol. 99, No. 309, Ed. 1 Thursday, March 11, 1999
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 11, 1999
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Appropriations for FY1999: Legislative Branch
This report is a guide to appropriations of Legislative Branch.
Date:
March 11, 1999
Creator:
Dwyer, Paul E.
Object Type:
Report
System:
The UNT Digital Library
Appropriations for FY1999: Legislative Branch
Appropriations are one part of a complex federal budget process that includes budget resolutions, appropriations (regular, supplemental, and continuing) bills, rescissions, and budget reconciliation bills. This report is a guide to one of the 13 regular appropriations bills that Congress passes each year. It is designed to supplement the information provided by the House and Senate Appropriations Subcommittees on Legislative Branch Appropriations.
Date:
March 11, 1999
Creator:
Dwyer, Paul E.
Object Type:
Report
System:
The UNT Digital Library
Automatic Mesh Coarsening for Discrete Ordinates Codes
This paper describes the use of a ''mesh potential'' function for automatic coarsening of meshes in discrete ordinates neutral particle transport codes. For many transport calculations, a user may find it helpful to have the code determine a ''good'' neutronics mesh. The complexity of a problem involving millions of mesh cells, dozens of materials, and many energy groups makes it difficult to determine an adequate level of mesh refinement with a minimum number of cells. A method has been implemented in PARTISN (Parallel Time-dependent SN) to calculate a ''mesh potential'' in each original cell of a problem, and use this information to determine the maximum coarseness allowed in the mesh while maintaining accuracy in the solution. Results are presented for a simple x-y-z fuel/control/reflector problem.
Date:
March 11, 1999
Creator:
Turner, Scott A.
Object Type:
Article
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 77, No. 113, Ed. 1 Thursday, March 11, 1999
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
March 11, 1999
Creator:
Dobbs, Gary
Object Type:
Newspaper
System:
The Portal to Texas History
Bogata News (Bogata, Tex.), Vol. 88, No. 44, Ed. 1 Thursday, March 11, 1999
Weekly newspaper from Bogata, Texas that includes local, state, and national news along with advertising.
Date:
March 11, 1999
Creator:
Nichols, Nanalee & Nichols, Thomas
Object Type:
Newspaper
System:
The Portal to Texas History
The Canadian Record (Canadian, Tex.), Vol. 109, No. 61, Ed. 1 Thursday, March 11, 1999
Weekly newspaper from Canadian, Texas that includes local, state and national news along with extensive advertising.
Date:
March 11, 1999
Creator:
Ezzell, Nancy & Brown, Laurie Ezzell
Object Type:
Newspaper
System:
The Portal to Texas History
Capital requirements and fuel-cycle energy and emissions impacts of potential PNGV fuels.
Our study reveals that supplying gasoline-equivalent demand for the low-market-share scenario requires a capital investment of less than $40 billion for all fuels except H{sub 2}, which will require a total cumulative investment of $150 billion. By contrast, cumulative capital investments under the high-market-share scenario are $50 billion for LNG, $90 billion for ethanol, $100 billion for methanol, $160 billion for CNG and DME, and $560 billion for H{sub 2}. Although these substantial capital requirements are spread over many years, their magnitude could pose a challenge to the widespread introduction of 3X vehicles. Fossil fuel use by US light-duty vehicles declines significantly with introduction of 3X vehicles because of fuel-efficiency improvements for 3X vehicles and because of fuel substitution (which applies to the nonpetroleum-fueled alternatives). Petroleum use for light-duty vehicles in 2030 is reduced by as much as 45% relative to the reference scenario. GHG emissions follow a similar pattern. Total GHG emissions decline by 25-30% with most of the propulsion system/fuel alternatives. For those using renewable fuels (i.e., ethanol and H{sub 2} from solar energy), GHG emissions drop by 33% (H{sub 2}) and 45% (ethanol). Among urban air pollutants, urban NOX emissions decline slightly for 3X vehicles using CIDI …
Date:
March 11, 1999
Creator:
Johnson, L.; Mintz, M.; Singh, M.; Stork, K.; Vyas, A. & Wang, M.
Object Type:
Article
System:
The UNT Digital Library
Challenges in biotechnology at LLNL: from genes to proteins
This effort has undertaken the task of developing a link between the genomics, DNA repair and structural biology efforts within the Biology and Biotechnology Research Program at LLNL. Through the advent of the I.M.A.G.E. (Integrated Molecular Analysis of Genomes and their Expression) Consortium, a world-wide effort to catalog the largest public collection of genes, accepted and maintained within BBRP, it is now possible to systematically express the protein complement of these to further elucidate novel gene function and structure. The work has ensued in four phases, outlined as follows: (1) Gene and System selection; (2) Protein expression and purification; (3) Structural analysis; and (4) biological integration. Proteins to be expressed have been those of high programmatic interest. This includes, in particular, proteins involved in the maintenance of genome integrity, particularly those involved in the repair of DNA damage, including ERCC1, ERCC4, XRCC2, XRCC3, XRCC9, HEX1, APN1, p53, RAD51B, RAD51C, and RAD51. Full-length cDNA cognates of selected genes were isolated, and cloned into baculovirus-based expression vectors. The baculoviral expression system for protein over-expression is now well-established in the Albala laboratory. Procedures have been successfully optimized for full-length cDNA clining into expression vectors for protein expression from recombinant constructs. This includes the …
Date:
March 11, 1999
Creator:
Albala, J S
Object Type:
Report
System:
The UNT Digital Library
Char crystalline transformations during coal combustion and their implications for carbon burnout
Residual, or unburned carbon in fly ash affects many aspects of power plant performance and economy including boiler efficiency, electrostatic precipitator operation, and ash as a salable byproduct. There is a large concern in industry on the unburned carbon problem due to a variety of factors, including low-NOx combustion system and internationalization of the coal market. In recent work, it has been found that residual carbon extracted from fly ash is much less reactive than the laboratory chars on which the current kinetics are based. It has been suggested that thermal deactivation at the peak temperature in combustion is a likely phenomenon and that the structural ordering is one key mechanism. The general phenomenon of carbon thermal annealing is well known, but there is a critical need for more data on the temperature and time scale of interest to combustion. In addition, high resolution transmission electron microscopy (HRTEM) fringe imaging, which provides a wealth of information on the nature and degree of crystallinity in carbon materials such as coal chars, has become available. Motivated by these new developments, this University Coal Research project has been initiated with the following goals: to determine transient, high-temperature, thermal deactivation kinetics as a function …
Date:
March 11, 1999
Creator:
Hurt, R.H.
Object Type:
Report
System:
The UNT Digital Library
Cherokeean/Herald (Rusk, Tex.), Vol. 150, No. 3, Ed. 1 Thursday, March 11, 1999
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
March 11, 1999
Creator:
Whitehead, Marie
Object Type:
Newspaper
System:
The Portal to Texas History
Combating Terrorism: Observations on Federal Spending to Combat Terrorism
Testimony issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO discussed its work and observations on federal spending to combat terrorism, focusing on: (1) the foreign-origin and domestic terrorism threat; (2) program growth and other issues raised throughout its work on combating terrorism; and (3) steps the executive branch has taken toward improving crosscutting management and coordination and provide some preliminary observations on the 1998 and 1999 Office of Management and Budget (OMB) reports to Congress on governmentwide spending and budgeting to combat terrorism."
Date:
March 11, 1999
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
Contribution to Sequencing of the Deinococcus radiodurans Genome
The stated goal of this project was to supply The Institute for Genomic Research (TIGR) with pure DNA from the bacterium Deinocmus radiodurans RI for purposes of complete genomic sequencing by TIGR. We subsequently decided to expand this project to include a second goal; this second goal was the development of a NotI chromosomal map of D. radiodurans R1 using Pulsed Field Gel Electrophoresis (PFGE).
Date:
March 11, 1999
Creator:
Minton, K. W.
Object Type:
Report
System:
The UNT Digital Library
Cooper Review (Cooper, Tex.), Vol. 119, No. 10, Ed. 1 Thursday, March 11, 1999
Weekly newspaper from Cooper, Texas that includes local, state, and national news along with advertising.
Date:
March 11, 1999
Creator:
Kisic, Theresa
Object Type:
Newspaper
System:
The Portal to Texas History
Defense Acquisition Workforce: Issues for Congress
This report discusses recent congressionally mandated reductions in the Department of Defense(DOD) acquisition workforce.
Date:
March 11, 1999
Creator:
Grasso, Valerie Bailey
Object Type:
Report
System:
The UNT Digital Library
Defense Health Care: Management Attention Needed to Make TRICARE More Effective and User-Friendly
A statement of record issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO discussed the Department of Defense's (DOD) implementation of TRICARE, focusing on the extent to which: (1) beneficiaries enrolled in TRICARE are getting timely access to health care; (2) claims for medical services are paid in a timely and accurate manner; (3) DOD and its contractors are identifying and mitigating fraud and abuse in TRICARE; and (4) DOD's pharmacy programs are cost-effective and consistently serve the needs of all beneficiaries."
Date:
March 11, 1999
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
DEVELOPMENT AND TESTING OF INDUSTRIAL SCALE, COAL FIRED COMBUSTION SYSTEM, PHASE 3
In the second half of calendar year 1998, no work was performed on the present project. The 20 MMBtu/hr combustor-boiler facility was operated for 11 tests, primarily with Coal Tech resources on biomass combustion and gasification. The total test days on the Philadelphia facility to the end of August 1998 was 119. Of these, 36 tests were part of another DOE project on sulfur retention is slag, and 8 were on an in-house biomass combustion effort. The test days on the other project are listed here because they demonstrate the durability of the combustor, which is one of the objectives of the present project. Also, the test work of 1998 revealed for the first time the major potential of this combustor for biomass combustion. These tests are double the 63 tests in the original plan for this project. All key project objectives have been exceeded including combustor durability, automated combustor operation, NO{sub x} emissions as low as 0.07 lb/MMBtu and SO{sub 2} emissions as low as 0.2 lb/MMBtu. In addition, a novel post-combustion NOx control process has been tested on a 37 MW and 100 MW utility boiler. The only effort remaining on this project is facility disassembly and Final …
Date:
March 11, 1999
Creator:
Zauderer, Dr. Bert
Object Type:
Report
System:
The UNT Digital Library
The Dublin Citizen (Dublin, Tex.), Vol. 9, No. 27, Ed. 1 Thursday, March 11, 1999
Weekly newspaper from Dublin, Texas that includes local, state, and national news along with advertising.
Date:
March 11, 1999
Creator:
Wright, Karen
Object Type:
Newspaper
System:
The Portal to Texas History
Dynamical Behavior of Multi-Robot Systems Using Lattice Gas Automata
Recent attention has been given to the deployment of an adaptable sensor array realized by multi-robotic systems. Our group has been studying the collective behavior of autonomous, multi-agent systems and their applications in the area of remote-sensing and emerging threats. To accomplish such tasks, an interdisciplinary research effort at Sandia National Laboratories are conducting tests in the fields of sensor technology, robotics, and multi-robotic and multi-agents architectures. Our goal is to coordinate a constellation of point sensors that optimizes spatial coverage and multivariate signal analysis using unmanned robotic vehicles (e.g., RATLERs, Robotic All-ten-sin Lunar Exploration Rover-class vehicles). Overall design methodology is to evolve complex collective behaviors realized through simple interaction (kinetic) physics and artificial intelligence to enable real-time operational responses to emerging threats. This paper focuses on our recent work understanding the dynamics of many-body systems using the physics-based hydrodynamic model of lattice gas automata. Three design features are investigated. One, for single-speed robots, a hexagonal nearest-neighbor interaction topology is necessary to preserve standard hydrodynamic flow. Two, adaptability, defined by the swarm's deformation rate, can be controlled through the hydrodynamic viscosity term, which, in turn, is defined by the local robotic interaction rules. Three, due to the inherent non-linearity of …
Date:
March 11, 1999
Creator:
Cameron, S. M.; Robinett, R.; Stantz, K. M.; Trahan, M. W. & Wagner, J. S.
Object Type:
Article
System:
The UNT Digital Library
Electra Star-News (Electra, Tex.), Vol. 94, No. 30, Ed. 1 Thursday, March 11, 1999
Weekly newspaper from Electra, Texas that includes local, state, and national news along with advertising.
Date:
March 11, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Evaluation of In Situ Combustion for Schrader Bluff
The focus of this report is on the results related to evaluation of in situ combustion processes applied to Schrader Bluff. Initially, overall screening processes were applied to determine which of the EOR methods, were most appropriate for Schrader Bluff. In situ combustion was among the methods considered potentially favorable and was evaluated further. Laboratory scale tube runs were conducted to determine if the kinetic parameters for the crude oil were favorable. Additional sensitivity studies were conducted to evaluate the recovery potential. Described in this report are the results of the (1) initial screening,(2) experimental tube runs, and (3) simulation sensitivity studies as related to in situ combustion in Schrader Bluff.
Date:
March 11, 1999
Creator:
Sarathi, P.; Strycker, A. & Wang, S.
Object Type:
Report
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Thursday, March 11, 1999
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 11, 1999
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History