Resource Type

Degree Department

Radiation Monitoring Unit, Radiological Sciences Department monthly report, January 1955 (open access)

Radiation Monitoring Unit, Radiological Sciences Department monthly report, January 1955

This report presents results on radiation monitoring from the radiological sciences department for January, 1955. Information is presented concerning radioactive effluent releases, personnel skin contamination, air sampling, and general radiation monitoring from the facilities.
Date: December 31, 1955
Creator: Stevens, A. J.
System: The UNT Digital Library
WATER DIVERSION MODEL (open access)

WATER DIVERSION MODEL

The distribution of seepage in the proposed repository will be highly variable due in part to variations in the spatial distribution of percolations. The performance of the drip shield and the backfill system may divert the water flux around the waste packages to the invert. Diversion will occur along the drift surface, within the backfill, at the drip shield, and at the Waste Package (WP) surface, even after the drip shield and WP have been breached by corrosion. The purpose and objective of this Analysis and Modeling Report (AMR) are to develop a conceptual model and constitutive properties for bounding the volume and rate of seepage water that flows around the drip shield (CRWMS M&O 1999c). This analysis model is to be compatible with the selected repository conceptual design (Wilkins and Heath, 1999) and will be used to evaluate the performance of the Engineered Barrier System (EBS), and to provide input to the EBS Water Distribution and Removal Model. This model supports the Engineered Barrier System (EBS) postclosure performance assessment for the Site Recommendation (SR). This document characterizes the hydrological constitutive properties of the backfill and invert materials (Section 6.2) and a third material that represents a mixture of the …
Date: December 21, 1999
Creator: Case, J.B.
System: The UNT Digital Library
Gurney energy of explosives: estimation of the velocity and impulse imparted to driven metal (open access)

Gurney energy of explosives: estimation of the velocity and impulse imparted to driven metal

None
Date: December 1, 1970
Creator: Kennedy, J. E.
System: The UNT Digital Library
NON-INVASIVE DETERMINATION OF THE LOCATION AND DISTRIBUTION OF FREE-PHASE DENSE NONAQUEOUS PHASE LIQUIDS (DNAPL) BY SEISMIC REFLECTION TECHNIQUES (open access)

NON-INVASIVE DETERMINATION OF THE LOCATION AND DISTRIBUTION OF FREE-PHASE DENSE NONAQUEOUS PHASE LIQUIDS (DNAPL) BY SEISMIC REFLECTION TECHNIQUES

This annual technical progress report is for part of Task 4 (site evaluation), Task 5 (2D seismic design, acquisition, and processing), and Task 6 (2D seismic reflection, interpretation, and AVO analysis) on DOE contact number DE-AR26-98FT40369. The project had planned one additional deployment to another site other than Savannah River Site (SRS) or DOE Hanford Site. After the SUBCON midyear review in Albuquerque, NM, it was decided that two additional deployments would be performed. The first deployment is to test the feasibility of using non-invasive seismic reflection and AVO analysis as a monitoring tool to assist in determining the effectiveness of Dynamic Underground Stripping (DUS) in removal of DNAPL. The second deployment is to the Department of Defense (DOD) Charleston Naval Weapons Station Solid Waste Management Unit 12 (SWMU-12), Charleston, SC to further test the technique to detect high concentrations of DNAPL. The Charleston Naval Weapons Station SWMU-12 site was selected in consultation with National Energy Technology Laboratory (NETL) and DOD Naval Facilities Engineering Command Southern Division (NAVFAC) personnel. Based upon the review of existing data and due to the shallow target depth, the project team collected three Vertical Seismic Profiles (VSP) and an experimental P-wave seismic reflection line. After …
Date: December 1, 2001
Creator: Waddell, Michael G.; Domoracki, William J. & Temples, Tom J.
System: The UNT Digital Library
Depositional sequence analysis and sedimentologic modeling for improved prediction of Pennsylvanian reservoirs (open access)

Depositional sequence analysis and sedimentologic modeling for improved prediction of Pennsylvanian reservoirs

Reservoirs in the Lansing-Kansas City limestone result from complex interactions among paleotopography (deposition, concurrent structural deformation), sea level, and diagenesis. Analysis of reservoirs and surface and near-surface analogs has led to developing a {open_quotes}strandline grainstone model{close_quotes} in which relative sea-level stabilized during regressions, resulting in accumulation of multiple grainstone buildups along depositional strike. Resulting stratigraphy in these carbonate units are generally predictable correlating to inferred topographic elevation along the shelf. This model is a valuable predictive tool for (1) locating favorable reservoirs for exploration, and (2) anticipating internal properties of the reservoir for field development. Reservoirs in the Lansing-Kansas City limestones are developed in both oolitic and bioclastic grainstones, however, re-analysis of oomoldic reservoirs provides the greatest opportunity for developing bypassed oil. A new technique, the {open_quotes}Super{close_quotes} Pickett crossplot (formation resistivity vs. porosity) and its use in an integrated petrophysical characterization, has been developed to evaluate extractable oil remaining in these reservoirs. The manual method in combination with 3-D visualization and modeling can help to target production limiting heterogeneities in these complex reservoirs and moreover compute critical parameters for the field such as bulk volume water. Application of this technique indicates that from 6-9 million barrels of Lansing-Kansas City oil …
Date: December 1, 1994
Creator: Watney, W. L.
System: The UNT Digital Library
High efficiency thin-film GaAs solar cells. First interim report, March 1--August 30, 1977 (open access)

High efficiency thin-film GaAs solar cells. First interim report, March 1--August 30, 1977

The objective is to demonstrate the feasibility of producing high-efficiency (15% or greater) thin-film GaAs solar cells with costs suitable for terrestrial solar electric power generation. The approach is that of growing GaAs by organio-metallic chemical vapor deposition on recrystallized germanium (Ge) films previously deposited on metal substrates and fabricating AMOS (Antireflecting Metal-Oxide-Semiconductor) solar cells on the GaAs. Previously it had been determined that a water vapor-grown native oxide (temperature = 25/sup 0/C) was the most useful native oxide for AMOS cells. A new chemical surface preparation prior to oxide growth led to more uniform oxides and reduced interface contamination, yielding lower reverse saturation current densities, a near-unity diode ideality factor, and better reproducibility. Substituting silver (Ag) for gold metallization showed no change in starting cell efficiency, but did greatly improve high temperature stability of the AMOS solar cell. A new study was completed on antireflection coatings on AMOS GaAs solar cells, taking into account the spectral response of the cell and nature of the solar spectra, and the results submitted for publication. XPS (X-ray Photoelectron Spectroscopy) studies had found earlier that the more efficient native oxides had primarily As/sub 2/O/sub 3/ and Ga/sub 2/O/sub 3/ with little GaAsO/sub 4/. …
Date: December 1, 1977
Creator: Stirn, Richard J.
System: The UNT Digital Library
LLE Review, Quarterly Report: Volume 60, July-September 1994 (open access)

LLE Review, Quarterly Report: Volume 60, July-September 1994

This volume contains articles on efficient generation of second-harmonic radiation from short-pulse lasers; calculation of the stabilization cutoff wave numbers for the Rayleigh-Taylor instability; a high-frequency silicon optical modulator; the angular dependence of stimulated Brillouin scattering; and femtosecond dynamics of ladder polymers. Three of these articles--second-harmonic generation, Rayleigh-Taylor cutoff wave numbers, and angular dependence of Brillouin scattering--are directly related to the OMEGA Upgrade, currently under construction. A summary of the status of the OMEGA Upgrade laser facility and the NLUF News for FY94 are included in this volume.
Date: December 31, 1994
Creator: Knauer, J. P.
System: The UNT Digital Library
Task 23 - background report on subsurface environmental issues relating to natural gas sweetening and dehydration operations. Topical report, February 1, 1994--February 28, 1996 (open access)

Task 23 - background report on subsurface environmental issues relating to natural gas sweetening and dehydration operations. Topical report, February 1, 1994--February 28, 1996

This report describes information pertaining to environmental issues, toxicity, environmental transport, and fate of alkanolamines and glycols associated with natural gas sweetening and dehydration operations. Waste management associated with the operations is also discussed.
Date: December 31, 1998
Creator: Sorensen, J.A.
System: The UNT Digital Library
Hazardous properties and environmental effects of materials used in solar heating and cooling (SHAC) technologies: interim handbook (open access)

Hazardous properties and environmental effects of materials used in solar heating and cooling (SHAC) technologies: interim handbook

General background informaion related to SHAC systems, how a particular material was chosen for this handbook, and codes and standards are given. Materials are categorized according to their functional use in SHAC systems as follows: (1) heat transfer fluids and fluid treatment chemicals, (2) insulation materials, (3) seals and sealant materials, (4) glazing materials, (5) collector materials, and (6) storage media. The informaion is presented under: general properties, chemical composition, thermal degradation products, and thermoxidative products of some commercial materials; toxic properties and other potential health effects; fire hazard properties; and environmental effects of and disposal methods for SHAC materials. (MHR)
Date: December 1, 1978
Creator: Searcy, J.Q.
System: The UNT Digital Library
Government Performance and Results Act, P.L. 103-62: Implementation Through Fall 1996 and Issues for the 105th Congress (open access)

Government Performance and Results Act, P.L. 103-62: Implementation Through Fall 1996 and Issues for the 105th Congress

The Government Performance and Results Act (GPRA) of 1993, P.L. 103-62, encourages greater accountability, requiring agencies to set goals and use performance measures for management and budgeting. This report examines how agencies will solicit information from stakeholders and consult with Congress to develop strategic goals, to be provided in final form to Congress in September 1997; GAO and OMB are to report in May and June 1997 (but may advance the date to March 1997) to Congress on agency readiness for full scale implementation and to recommend changes in the statute; and agencies are expected to comply with OMB's requirements to use more performance measurement information in FY1998 budget requests.
Date: December 24, 1996
Creator: Knezo, Genevieve J.
System: The UNT Digital Library
Compact X-ray Light Source Workshop Report (open access)

Compact X-ray Light Source Workshop Report

This report, produced jointly by EMSL and FCSD, is the result of a workshop held in September 2011 that examined the utility of a compact x-ray light source (CXLS) in addressing many scientific challenges critical to advancing energy science and technology.
Date: December 1, 2012
Creator: Thevuthasan, Suntharampillai; Evans, James E.; Terminello, Louis J.; Koppenaal, David W.; Manke, Kristin L. & Plata, Charity
System: The UNT Digital Library
Inhalation developmental toxicology studies: Teratology study of n-hexane in rats: Final report (open access)

Inhalation developmental toxicology studies: Teratology study of n-hexane in rats: Final report

The straight chain hydrocarbon, n-hexane, is a volatile, ubiquitous solvent used in industrial, academic, and smaller commercial environments. The significant opportunity for women of child-bearing age to be exposed to this chemical prompted the undertaking of a study to assess the developmental toxicity of n-hexane in an animal model. Timed-pregnant (30 animals per group) and virgin (10 animals per group) Sprague-Dawley rats were exposed to 0 (filtered air), 200, 1000, and 5000 ppM n-hexane (99.9% purity) vapor in inhalation chambers for 20 h/day for a period of 14 consecutive days. Sperm-positive females were exposed for 6 to 19 days of gestation (dg) and virgins were exposed concurrently for 14 consecutive days. The day of sperm detection was designated as 0 dg for mated females. Adult female body weights were monitored prior to, throughout the exposure period, and at sacrifice. Uterine, placental, and fetal body weights were obtained for gravid females at sacrifice. Implants were enumerated and their status recorded as live fetus, early or late resorption, or dead. Live fetuses were sexed and examined for gross, visceral, skeletal, and soft-tissue craniofacial defects. 16 refs., 3 figs., 7 tabs.
Date: December 1, 1987
Creator: Mast, T.J.
System: The UNT Digital Library
Laboratory Directed Research and Development Annual Report to the Department of Energy - December 2005 (open access)

Laboratory Directed Research and Development Annual Report to the Department of Energy - December 2005

None
Date: December 31, 2006
Creator: Fox, K. J.
System: The UNT Digital Library
Functional requirements for the Automated Transportation Management System: TTP number: RL 439002 (open access)

Functional requirements for the Automated Transportation Management System: TTP number: RL 439002

This requirements analysis, documents Department of Energy (DOE) transportation management procedures for the purpose of providing a clear and mutual understanding between users and designers of the proposed Automated Transportation Management System (ATMS). It is imperative that one understand precisely how DOE currently performs traffic management tasks; only then can an integrated system be proposed that successfully satisfies the major requirements of transportation managers and other system users. Accordingly, this report describes the current workings of DOE transportation organizations and then proposes a new system which represents a synthesis of procedures (both current and desired) which forms the basis for further systems development activities.
Date: December 31, 1992
Creator: Portsmouth, J. H.
System: The UNT Digital Library
Development of Novel Water-Gas Shift Membrane Reactor (open access)

Development of Novel Water-Gas Shift Membrane Reactor

None
Date: December 29, 2004
Creator: Ho, W. S. Winston
System: The UNT Digital Library
Development of Novel Water-Gas Shift Membrane Reactor (open access)

Development of Novel Water-Gas Shift Membrane Reactor

This report summarizes the objectives, technical barrier, approach, and accomplishments for the development of a novel water-gas-shift (WGS) membrane reactor for hydrogen enhancement and CO reduction. We have synthesized novel CO{sub 2}-selective membranes with high CO{sub 2} permeabilities and high CO{sub 2}/H{sub 2} and CO{sub 2}/CO selectivities by incorporating amino groups in polymer networks. We have also developed a one-dimensional non-isothermal model for the countercurrent WGS membrane reactor. The modeling results have shown that H{sub 2} enhancement (>99.6% H{sub 2} for the steam reforming of methane and >54% H{sub 2} for the autothermal reforming of gasoline with air on a dry basis) via CO{sub 2} removal and CO reduction to 10 ppm or lower are achievable for synthesis gases. With this model, we have elucidated the effects of system parameters, including CO{sub 2}/H{sub 2} selectivity, CO{sub 2} permeability, sweep/feed flow rate ratio, feed temperature, sweep temperature, feed pressure, catalyst activity, and feed CO concentration, on the membrane reactor performance. Based on the modeling study using the membrane data obtained, we showed the feasibility of achieving H{sub 2} enhancement via CO{sub 2} removal, CO reduction to {le} 10 ppm, and high H{sub 2} recovery. Using the membrane synthesized, we have obtained …
Date: December 29, 2004
Creator: Ho, W. S. Winston
System: The UNT Digital Library
Portable Scintillation Counters for Geologic Use (open access)

Portable Scintillation Counters for Geologic Use

Report describing the design, function, application, and future plans of portable scintillation counters in geology. From abstract: "A small, light, portable scintillation counter, primarily intended for geologic field use, has been designed and is now commercially manufactured."
Date: December 1953
Creator: Wilson, E. E.; Rhoden, V. C.; Vaughn, W. W. & Faul, Henry
System: The UNT Digital Library
Evaluation of radioactive scrap metal recycling (open access)

Evaluation of radioactive scrap metal recycling

This report evaluates the human health risks and environmental and socio-political impacts of options for recycling radioactive scrap metal (RSM) or disposing of and replacing it. Argonne National Laboratory (ANL) is assisting the US Department of Energy (DOE), Office of Environmental Restoration and Waste Management, Oak Ridge Programs Division, in assessing the implications of RSM management alternatives. This study is intended to support the DOE contribution to a study of metal recycling being conducted by the Task Group on Recycling and Reuse of the Organization for Economic Cooperation and Development. The focus is on evaluating the justification for the practice of recycling RSM, and the case of iron and steel scrap is used as an example in assessing the impacts. To conduct the evaluation, a considerable set of data was compiled and developed. Much of this information is included in this document to provide a source book of information.
Date: December 1, 1995
Creator: Nieves, L. A.; Chen, S. Y.; Kohout, E. J.; Nabelssi, B.; Tilbrook, R. W. & Wilson, S. E.
System: The UNT Digital Library
Theoretical and analog studies of the effects of nonlinear stability derivatives on the longitudinal motions of an aircraft in response to step control deflections and to the influence of proportional automatic control (open access)

Theoretical and analog studies of the effects of nonlinear stability derivatives on the longitudinal motions of an aircraft in response to step control deflections and to the influence of proportional automatic control

Through theoretical and analog results the effects of two nonlinear stability derivatives on the longitudinal motions of an aircraft have been investigated. Nonlinear functions of pitching-moment and lift coefficients with angle of attack were considered. Analog results of aircraft motions in response to step elevator deflections and to the action of the proportional control systems are presented. The occurrence of continuous hunting oscillations was predicted and demonstrated for the attitude stabilization system with proportional control for certain nonlinear pitching-moment variations and autopilot adjustments.
Date: December 29, 1950
Creator: Curfman, Howard J., Jr.
System: The UNT Digital Library
Ventilation Model Report (open access)

Ventilation Model Report

The purpose of the Ventilation Model is to simulate the heat transfer processes in and around waste emplacement drifts during periods of forced ventilation. The model evaluates the effects of emplacement drift ventilation on the thermal conditions in the emplacement drifts and surrounding rock mass, and calculates the heat removal by ventilation as a measure of the viability of ventilation to delay the onset of peak repository temperature and reduce its magnitude. The heat removal by ventilation is temporally and spatially dependent, and is expressed as the fraction of heat carried away by the ventilation air compared to the fraction of heat produced by radionuclide decay. One minus the heat removal is called the wall heat fraction, or the remaining amount of heat that is transferred via conduction to the surrounding rock mass. Downstream models, such as the ''Multiscale Thermohydrologic Model'' (BSC 2001), use the wall heat fractions as outputted from the Ventilation Model to initialize their post-closure analyses. The Ventilation Model report was initially developed to analyze the effects of preclosure continuous ventilation in the Engineered Barrier System (EBS) emplacement drifts, and to provide heat removal data to support EBS design. Revision 00 of the Ventilation Model included documentation …
Date: December 20, 2002
Creator: Chipman, V. & Case, J.
System: The UNT Digital Library
Instrumentation and Controls Division progress report, July 1, 1982-July 1, 1984. Volume 1 (open access)

Instrumentation and Controls Division progress report, July 1, 1982-July 1, 1984. Volume 1

Progress is briefly summarized for a large number of projects in the areas of research instruments, measurement and controls engineering, reactor systems, and maintenance management. (LEW)
Date: December 1, 1984
Creator: Klobe, L.W.E. (ed.)
System: The UNT Digital Library
Permanganate Treatment of DNAPLs in Reactive Barriers and Source Zone Flooding Schemes (open access)

Permanganate Treatment of DNAPLs in Reactive Barriers and Source Zone Flooding Schemes

Permanganate is a simple and common chemical, which has proven useful in oxidizing common chlorinated solvents. Due to the nature of oxidation, the byproducts and products are much less harmful than those from reduction-type remedial schemes, and the degradation process is rapid. The main goal of this project is to understand oxidative destruction of chlorinated solvents using potassium permanganate. The study has provided a theoretical basis for evaluating the feasibility of in-situ applications, to couple kinetic reaction with transport models, and to develop an appropriate field test for further assessing the approach.
Date: December 23, 2003
Creator: Schwartz, F. W. & Zhang, H.
System: The UNT Digital Library
Source-term reevaluation for US commercial nuclear power reactors: a status report (open access)

Source-term reevaluation for US commercial nuclear power reactors: a status report

Only results that had been discussed publicly, had been published in the open literature, or were available in preliminary reports as of September 30, 1984, are included here. More than 20 organizations are participating in source-term programs, which have been undertaken to examine severe accident phenomena in light-water power reactors (including the chemical and physical behavior of fission products under accident conditions), update and reevaluate source terms, and resolve differences between predictions and observations of radiation releases and related phenomena. Results from these source-term activities have been documented in over 100 publications to date.
Date: December 1, 1984
Creator: Herzenberg, C. L.; Ball, J. R. & Ramaswami, D.
System: The UNT Digital Library
Mammals of the Savannah River Site (open access)

Mammals of the Savannah River Site

This book is designed to be used as a field guide, reference book, bibliography, and introduction to the basic biology and ecology of the 54 mammal species that currently or potentially exist on or near the Savannah River Site (SRS). For 50 of these species, we present basic descriptions, distinguishing morphological features, distribution and habitat preferences, food habits, reproductive biology, social behavior, ecological relationships with other species, and economic importance to man. For those species that have been studied on the SRS, we summarize the results of these studies. Keys and illustrations are provided for whole body and skull identification. A selected glossary defines technical terminology. Illustrations of tracks of the more common larger mammals will assist in field identifications. We also summarize the results of two major long-term SRS studies, ``The Forbearer Census`` and ``White-tailed Deer Studies``. A cross-indexed list of over 300 SRS publications on mammals classifies each publication by 23 categories such as habitat, reproduction, genetics, etc., and also for each mammal species. The 149 Master`s theses and Ph.D. dissertations that have been conducted at the Savannah River Ecology Laboratory are provided as additional references.
Date: December 31, 1991
Creator: Cothran, E. G.; Smith, M. H.; Wolff, J. O. & Gentry, J. B.
System: The UNT Digital Library