Search Results

open access

3-D subsurface modeling within the framework of an environmental restoration information system: Prototype results using earthvision

Description: As a result of the DOE Oak Ridge Reservation (DOE-ORR) placement on the EPA Superfund National Priorities List in December of 1989, all remedial activities, including characterization, remedial alternatives selection, and implementation of remedial measures, must meet the combined requirements of RCRA, CERCLA, and NEPA. The Environmental Restoration Program, therefore, was established with the mission of eliminating or reducing to prescribed safe levels the risks to the environment or to human … more
Date: December 31, 1994
Creator: Goeltz, R. T. & Zondlo, T. F.
Partner: UNT Libraries Government Documents Department
open access

8. annual national conference of black physics students -- A summary report

Description: The primary goals of the conference were to: (1) Develop a peer/mentor network within the African-American physics community; (2) Inform African-American students in physics of the various academic and professional opportunities; and (3) Bring important academic, economic and political issues and developments in the field to the attention of the students. The conference program was designed to fulfill these goals and optimize the students` exposure to physics as a professional and its real-life… more
Date: December 31, 1994
Creator: Valk, H.S.
Partner: UNT Libraries Government Documents Department
open access

59. Cold Spring Harbor symposium on quantitative biology: Molecular genetics of cancer

Description: Investigation of the mechanistic aspects of cancer has its roots in the studies on tumor viruses and their effects on cell proliferation, function, and growth. This outstanding progress was well documented in previous Cold Spring Harbor Symposia on Quantitative Biology. In the early to mid 1980s, progress on the development of chromosome mapping strategies and the accumulation of DNA probes that identified polymorphisms, encouraged by the international Human Genome Project, enabled the identifi… more
Date: December 31, 1994
Partner: UNT Libraries Government Documents Department
open access

1994 Annual Conference Program: CIEE

Description: CIEE`s research has two primary goals. The first is to identify, develop, and demonstrate efficient end-use energy technologies and processes. The second is to improve the data and analytical tools related to the end use of energy. This document consists of papers presented on the topics of residential cooling systems, energy efficiency in commercial buildings, emissions from gas combustion systems, HVAC distribution systems, alternative transportation systems, and emission reduction strategies. more
Date: December 31, 1994
Partner: UNT Libraries Government Documents Department
open access

1994 DOE Technical Standards Program Workshop: Proceedings

Description: The DOE Technical Standards Program has been structured to provide guidance and assistance for the development, adoption, and use of voluntary standards within the Department. OMB Circular A-119, ``Federal Participation in the Development and Use of Voluntary Standards`` establishes the policy to be followed in working with voluntary standards bodies, and in adopting and using voluntary standards whenever feasible. The DOE Technical Standards Program is consistent with this policy and is dedica… more
Date: December 31, 1994
Creator: Spellman, D. J.
Partner: UNT Libraries Government Documents Department
open access

Abstracts of oral and poster sessions

Description: The climate model of the Goddard Institute for Space Studies (GISS GCM) has been used to project the influence of increasing concentrations of greenhouse gases on the future global climate. New parameterizations for the GISS GCM are being developed to improve its depiction of current climate scenarios and to make it more sensitive to the variability of external forcing mechanisms such as sea-surface temperatures (SST), atmospheric aerosols and constituent trace gases. The new moist convection s… more
Date: December 31, 1994
Creator: Druyan, L. M.
Partner: UNT Libraries Government Documents Department
open access

Accelerator-based systems for plutonium destruction and nuclear waste transmutation

Description: Accelerator-base systems are described that can eliminate long-lived nuclear materials. The impact of these systems on global issues relating to plutonium minimization and nuclear waste disposal can be significant. An overview of the components that comprise these systems is given, along with discussion of technology development status and needs. A technology development plan is presented with emphasis on first steps that would demonstrate technical performance.
Date: December 31, 1994
Creator: Arthur, E. D.
Partner: UNT Libraries Government Documents Department
open access

Accelerator developments since the ZGS by ZGS people

Description: The ZGS was a facility, as well as an organization, where people got together to pursue a common goal of doing exciting science of the day. In this note, the authors describe notable events related to accelerators and accelerator people since the closing of the ZGS program some 15 years ago. Many of the same ZGS people have been carrying out the state-of-the art accelerator work around the Laboratory with the same dedication that characterized their work in the earlier days. First the authors d… more
Date: December 31, 1994
Creator: Cho, Y.
Partner: UNT Libraries Government Documents Department
open access

Acceptance criteria for interim dry storage of aluminum-clad fuels

Description: Direct repository disposal of foreign and domestic research reactor fuels owned by the United States Department of Energy is an alternative to reprocessing (together with vitrification of the high level waste and storage in an engineered barrier) for ultimate disposition. Neither the storage systems nor the requirements and specifications for acceptable forms for direct repository disposal have been developed; therefore, an interim storage strategy is needed to safely store these fuels. Dry sto… more
Date: December 31, 1994
Creator: Sindelar, R. L.; Peacock, H. B. Jr.; Iyer, N. C. & Louthan, M. R. Jr.
Partner: UNT Libraries Government Documents Department
open access

Achieving increased spent fuel storage capacity at the High Flux Isotope Reactor (HFIR)

Description: The HFIR facility was originally designed to store approximately 25 spent cores, sufficient to allow for operational contingencies and for cooling prior to off-site shipment for reprocessing. The original capacity has now been increased to 60 positions, of which 53 are currently filled (September 1994). Additional spent cores are produced at a rate of about 10 or 11 per year. Continued HFIR operation, therefore, depends on a significant near-term expansion of the pool storage capacity, as well … more
Date: December 31, 1994
Creator: Cook, D. H.; Chang, S. J.; Dabs, R. D.; Freels, J. D.; Morgan, K. A.; Rothrock, R. B. et al.
Partner: UNT Libraries Government Documents Department
open access

Acoustically enhanced remediation of contaminated soil and ground water

Description: This program systematically evaluates the use of acoustic excitation fields (AEFs) to increase fluid and contaminant extraction rates from a wide range of unconsolidated soils. Successful completion of this program will result in a commercially-viable, advanced in-situ remediation technology that will significantly reduce clean-up times and costs. This technology should have wide applicability since it is envisioned to augment existing remediation technologies, such as traditional pump and trea… more
Date: December 31, 1994
Creator: Iovenitti, J.L.; Rynne, T.M. & Spencer, J.W. Jr.
Partner: UNT Libraries Government Documents Department
open access

Activities of HPS standards committee in environmental remediation

Description: The Health Physics Society (HPS) develops American National Standards in the area of radiation protection using methods approved by the American National Standards Institute (ANSI). Two of its sections, Environmental Health Physics and Contamination Limits, have ongoing standards development which are important to some environmental remediation efforts. This paper describes the role of the HPS standards process and indicates particular standards under development which will be of interest to th… more
Date: December 31, 1994
Creator: Stencel, J. R. & Chen, S. Y.
Partner: UNT Libraries Government Documents Department
open access

Adiabatic theory of Wannier threshold laws and ionization cross sections

Description: The Wannier threshold law for three-particle fragmentation is reviewed. By integrating the Schroedinger equation along a path where the reaction coordinate R is complex, anharmonic corrections to the simple power law are obtained. These corrections are found to be non-analytic in the energy E, in contrast to the expected analytic dependence upon E.
Date: December 31, 1994
Creator: Macek, J.H. & Ovchinnikov, S.Yu.
Partner: UNT Libraries Government Documents Department
open access

Advanced computational research in materials processing for design and manufacturing

Description: The computational requirements for design and manufacture of automotive components have seen dramatic increases for producing automobiles with three times the mileage. Automotive component design systems are becoming increasingly reliant on structural analysis requiring both overall larger analysis and more complex analyses, more three-dimensional analyses, larger model sizes, and routine consideration of transient and non-linear effects. Such analyses must be performed rapidly to minimize dela… more
Date: December 31, 1994
Creator: Zacharia, T.
Partner: UNT Libraries Government Documents Department
open access

Advanced manufacturing by spray forming: Aluminum strip and microelectromechanical systems

Description: Spray forming is an advanced materials processing technology that converts a bulk liquid metal to a near-net-shape solid by depositing atomized droplets onto a suitably shaped substrate. By combining rapid solidification processing with product shape control, spray forming can reduce manufacturing costs while improving product quality. INEL is developing a unique spray-forming method based on de Laval (converging/diverging) nozzle designs to produce near-net-shape solids and coatings of metals,… more
Date: December 31, 1994
Creator: McHugh, K.M.
Partner: UNT Libraries Government Documents Department
open access

Advanced Neutron Source Enrichment Study

Description: A study has been performed of the impact on performance of using low enriched uranium (20% {sup 235}U) or medium enriched uranium (35% {sup 235}U) as an alternative fuel for the Advanced Neutron Source, which is currently designed to use uranium enriched to 93% {sup 235}U. Higher fuel densities and larger volume cores were evaluated at the lower enrichments in terms of impact on neutron flux, safety, safeguards, technical feasibility, and cost. The feasibility of fabricating uranium silicide fu… more
Date: December 31, 1994
Creator: Bari, R. A.; Ludewig, H. & Weeks, J. R.
Partner: UNT Libraries Government Documents Department
open access

Advanced Neutron Source enrichment study -- Volume 1: Main report. Final report, Revision 12/94

Description: A study has been performed of the impact on performance of using low enriched uranium (20% {sup 235}U) or medium enriched uranium (35% {sup 235}U) as an alternative fuel for the Advanced Neutron Source, which is currently designed to use uranium enriched to 93% {sup 235}U. Higher fuel densities and larger volume cores were evaluated at the lower enrichments in terms of impact on neutron flux, safety, safeguards, technical feasibility, and cost. The feasibility of fabricating uranium silicide fu… more
Date: December 31, 1994
Creator: Bari, R. A.; Ludewig, H. & Weeks, J.
Partner: UNT Libraries Government Documents Department
open access

Advanced Neutron Source enrichment study. Volume 2: Appendices -- Final report, Revision 12/94

Description: A study has been performed of the impact on performance of using low enriched uranium (20% {sup 235}U) or medium enriched uranium (35% {sup 235}U) as an alternative fuel for the Advanced Neutron Source, which is currently designed to use uranium enriched to 93% {sup 235}U. Higher fuel densities and larger volume cores were evaluated at the lower enrichments in terms of impact on neutron flux, safety, safeguards, technical feasibility, and cost. The feasibility of fabricating uranium silicide fu… more
Date: December 31, 1994
Creator: Bari, R. A.; Ludewig, H. & Weeks, J.
Partner: UNT Libraries Government Documents Department
open access

Advanced technologies for decontamination and conversion of scrap metals

Description: Recycle of radioactive scrap metals (RSM) from decommissioning of DOE uranium enrichment and nuclear weapons manufacturing facilities is mandatory to recapture the value of these metals and avoid the high cost of disposal by burial. The scrap metals conversion project detailed below focuses on the contaminated nickel associated with the gaseous diffusion plants. Stainless steel can be produced in MSC`s vacuum induction melting process (VIM) to the S30400 specification using nickel as an alloy c… more
Date: December 31, 1994
Creator: Muth, T.R.; Moore, J.; Olson, D. & Mishra, B.
Partner: UNT Libraries Government Documents Department
open access

Advanced tokamak operating modes in TPX and ITER

Description: A program is described to develop the advanced tokamak physics required for an economic steady-state fusion reactor on existing (short-pulse) tokamak experiments; to extend these operating modes to long-pulse on TPX; and finally to demonstrate them in a long-pulse D-T plasma on ITER.
Date: December 31, 1994
Creator: Nevins, W. M.
Partner: UNT Libraries Government Documents Department
open access

Advances in research for solid oxide fuel cells

Description: Solid oxide fuel cells are attracting considerable interest among industrial organizations wanting to position themselves in a potentially important technology of the future. More than a dozen new organizations worldwide have begun SOFC development in the last few years. Most of this R and D activity is in the planar technology, because it represents a good compromise between the proven but IR-limited tubular configuration and the high-performance but difficult-to-fabricate monolithic structure… more
Date: December 31, 1994
Creator: Krumpelt, M.; Kueper, T. W. & Doshi, R.
Partner: UNT Libraries Government Documents Department
open access

Adventures in supercomputing: An innovative program for high school teachers

Description: Within the realm of education, seldom does an innovative program become available with the potential to change an educator`s teaching methodology. Adventures in Supercomputing (AiS), sponsored by the U.S. Department of Energy (DOE), is such a program. It is a program for high school teachers that changes the teacher paradigm from a teacher-directed approach of teaching to a student-centered approach. {open_quotes}A student-centered classroom offers better opportunities for development of intern… more
Date: December 31, 1994
Creator: Oliver, C. Edward; Hicks, H. Richard; Summers, Barbara G. & Staten, David G.
Partner: UNT Libraries Government Documents Department
open access

AEM investigation of tetrahedrally coordinated Ti{sup 4+} in nickel-titanate spinel

Description: Stoichiometry and site distribution of metastable nickel-titanate spinel was studied with AEM. Results of EDXS and EELS agree that the metastable spinel is nonstoichiometric and titanium-deficient relative to its hypothetical endmember composition, ``Ni{sub 2}TiO{sub 4}``. The titanium deficiency has been determined by EELS to be {Delta} = 0.025 {plus_minus} 0.005. Channeling-enhanced microanalysis and ELNES studies indicate that the Ti{sup 4+} and Ni{sup 2+} cations are in tetrahedral and octa… more
Date: December 31, 1994
Creator: Anderson, I. M.; Bentley, J. & Carter, C. B.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen