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Office of Scientific & Technical Information Technical Reports
552
Technical Report Archive and Image Library
73
Congressional Research Service Reports
29
Office of Technology Assessment
28
Texas State Publications
15
National Advisory Committee for Aeronautics Collection
14
Government Accountability Office Reports
5
TRAIL Microcard Collection
4
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2
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2
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United States Geological Survey Reports
21
Trace elements investigations report
15
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9
NACA Research Memorandums
8
United States Department of Energy Grand Junction Office Reports
6
Background paper
5
National Oceanic and Atmospheric Administration Reports
5
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4
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4
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710 Matching Results
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Distribution of Nitrate in the Unsaturated Zone, Highland-East Highlands Area, San Bernardino County, California
From abstract: "This study was made to describe the distribution of inorganic nitrogen and other chemical constituents and nitrogen-using bacteria in the unsaturated zone, to relate nitrogen occurrences, in a general way, to present and historical land use, and to attempt to predict nitrogen concentrations in ground water after recharge" within the Highland-East Highlands area of San Bernardino County, California. It includes maps, graphs, and tables.
Date:
September 1980
Creator:
Klein, J. M. & Bradford, W. L.
System:
The UNT Digital Library
Recovery of bypassed oil in the Dundee Formation (Devonian) of the Michigan Basin using horizontal drains. Final report, April 28, 1994--December 31, 1997
Total hydrocarbon production in the Michigan Basin has surpassed 1 billion barrels (Bbbls) and total unrecovered reserves are estimated at 1--2 BBbls. However, hydrocarbon production in Michigan has fallen from 35 MMbbls/yr in 1979 to about 10 MMbbls/yr in 1996. In an effort to slow this decline, a field demonstration project designed around using a horizontal well to recover bypassed oil was designed and carried out at Crystal Field in Montcalm County, MI. The project had two goals: to test the viability of using horizontal wells to recover bypassed oil from the Dundee Formation, and to characterize additional Dundee reservoirs (29) that are look alikes to the Crystal Field. As much as 85 percent of the oil known to exist in the Dundee Formation in the Michigan Basin remains in the ground as bypassed oil. Early production techniques in the 137 fields were poor, and the Dundee was at risk of being abandoned, leaving millions of barrels of oil behind. Crystal Field in Montcalm County, Michigan is a good example of a worn out field. Crystal Field was once a prolific producer which had been reduced to a handful of wells, the best of which produced only 5 barrels per …
Date:
September 1, 1998
Creator:
Wood, J.R. & Pennington, W.D.
System:
The UNT Digital Library
Index-Summarized Wind Data
This Index provides a description of all wind summaries available at the National Climatic Center.
Date:
September 1, 1977
Creator:
Changery, M. J.; Hodge, W. T. & Ramsdell, J. V.
System:
The UNT Digital Library
Chromate abatement in the Y-12 Plant's New Hope Pond
None
Date:
September 1, 1975
Creator:
DeMonbrum, J. R. & Muenzer, W. A.
System:
The UNT Digital Library
Hydrography of Onslow Bay, North Carolina: September 1975 (OBIS II)
Data collected during studies of Onslow Bay, off the North Carolina coast during cruises during September, 1975, are reported. Current meters and thermography were placed at depths of 10 and 22 m along the 28 m isobath in the northeastern and southwestern sectors of the Bay. Data are included on wind turbulence and velocity; seawater salinity and temperature at various depths; the content of nitrates, phosphates, silicate, oxygen, chlorophyll, and phytoplankton biomass at various depths. Hydrographic and meteorologic conditions during the cruises are included. (CH)
Date:
September 1, 1975
Creator:
Atkinson, L. P.; Singer, J. J.; Dunstan, W. M. & Pietrafesa, L. J.
System:
The UNT Digital Library
Application of sensitivity analysis to a quantitative assessment of neutron cross-section requirements for the TFTR: an interim report
A computational method to determine cross-section requirements quantitatively is described and applied to the Tokamak Fusion Test Reactor (TFTR). In order to provide a rational basis for the priorities assigned to new cross- section measurements or evaluations, this method includes quantitative estimates of the uncertainty of currently available data, the sensitivity of important nuclear design parameters to selected cross sections, and the accuracy desired in predicting nuclear design parameters. Perturbation theory is used to combine estimated cross-section uncertainties with calculated sensitivities to determine the variance of any nuclear design parameter of interest. (auth)
Date:
September 1, 1975
Creator:
Gerstl, S.A.W.; Dudziak, D.J. & Muir, D.W.
System:
The UNT Digital Library
Hydrogeologic Investigation of the Advanced Coal Liquefaction Research and Development Facility, Wilsonville, Alabama
This document describes the geology and hydrogeology at the former Advanced Coal Liquefaction Research and Development (ACLR&D) facility in Wilsonville, Alabama. The work was conducted by personnel from the Oak Ridge National Laboratory Grand Junction office (ORNL/GJ) for the U.S. Department of Energy (DOE) Pittsburgh Energy Technology Center (PETC). Characterization information was requested by PETC to provide baseline environmental information for use in evaluating needs and in subsequent decision-making for further actions associated with the closeout of facility operations. The hydrogeologic conceptual model presented in this report provides significant insight regarding the potential for contaminant migration from the ACLR&D facility and may be useful during other characterization work in the region. The ACLR&D facility is no longer operational and has been dismantled. The site was characterized in three phases: the first two phases were an environmental assessment study and a sod sampling study (APCO 1991) and the third phase the hydraulic assessment. Currently, a Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) remedial investigation (RI) to address the presence of contaminants on the site is underway and will be documented in an RI report. This technical memorandum addresses the hydrogeologic model only.
Date:
September 1, 1996
Creator:
Gardner, F. G.; Kearl, P. M.; Mumby, M. E. & Rogers, S.
System:
The UNT Digital Library
ALARA (as low as reasonably achievable) engineering at Department of Energy facilities: Bibliography of selected readings in radiation protection and ALARA
This report is the first in the series of bibliographies supporting the efforts at the Brookhaven National Laboratory ALARA Center on dose reduction at DOE facilities. Abstracts for this bibliography were selected from proceedings of technical meetings, journals, research reports, and searches of the DOE Energy Data Base. The abstracts included in this report relate to operational health physics as well as other subjects which have a bearing on dose reduction. Facilities covered include: radioactive waste, uranium enrichment, fabrication, unirradiated fissile materials storage, irradiated fissile material storage, reprocessing, decommissioning, recovery, hot laboratories, tritium production, reactors (research, test and production but not power reactors), and accelerators. We have also included material in improved design, materials selection, planning, and other topics which are related to dose-reduction efforts. The report contains 68 abstracts as well as subject and author indices.
Date:
September 1, 1989
Creator:
Daniel, S. W.; Kaplan, E.; Dionne, B. J.; Khan, T. A.; Lane, S. G. & Baum, J. W.
System:
The UNT Digital Library
TRUST-II Utility Package: Partially Saturated Soil Characterization, Grid Generation, and Advective Transport Analysis
None
Date:
September 1, 1983
Creator:
McKeon, T. J.; Tyler, S. W.; Mayer, D. W. & Reisenauer, A. E.
System:
The UNT Digital Library
2101-M Pond hydrogeologic characterization report
This report documents information collected by the Pacific Northwest Laboratory {sup (a)} at the request of Westinghouse Hanford Company. Presented in this report is the interpretation of the hydrogeologic environment at the 2101-M Pond, located in the 200-East Area of the Hanford Site. This information and its accompanying interpretation were derived from sampling and testing activities associated with the installation of four ground-water monitoring wells, in addition to data gathered from several previously existing wells. The new monitoring wells were installed as part of a groundwater monitoring program initiated in 1988. The four new monitoring wells were installed around the 2101-M Pond between May 23 and August 27, 1988. Geologic sampling, aquifer testing, and initial ground-water sampling were performed during the installation of these wells. Laboratory analyses of the sediment samples for particle size, calcium carbonate content, and selected natural and contaminant constituents were performed. A full year of quarterly ground-water sampling and the first statistical analysis of background and downgradient data have also been performed. 112 refs., 49 figs., 18 tabs.
Date:
September 1, 1990
Creator:
Chamness, M. A.; Luttrell, S. P.; Bates, D. J. & Martin, W. J.
System:
The UNT Digital Library
Beam steering due to displaced slots
Using a two-dimensional algorithm, steering of triode slots was investigated for the first time with a reasonable accounting of the ion extraction sheath.
Date:
September 1, 1979
Creator:
Whealton, J. H.; McGaffey, R. W. & Jaeger, E. F.
System:
The UNT Digital Library
Site characterization methodology for deep borehole disposal.
None
Date:
September 1, 2012
Creator:
Vaughn, Palmer; Arnold, Bill Walter; Altman, Susan Jeanne; Brady, Patrick Vane & Gardner, William Payton
System:
The UNT Digital Library
Performance assessment of grouted double-shell tank waste disposal at Hanford. Revision 1
This document assesses the performance of the Grout Disposal Facility after closure. The facility and disposal environment are modeled to predict the long-term impacts of the disposal action. The document concludes that the disposal system provides reasonable assurance that doses to the public will remain within the performance objectives. This document is required for DOC Order 5820.2A.
Date:
September 1, 1994
Creator:
Shade, J. W., Kincaid, C.T.; Whyatt, G. A.; Rhoads, K.; Westsik, J. H. Jr.; Freshley, M. D.; Blanchard, K. A. et al.
System:
The UNT Digital Library
Characterization of explosives processing waste decomposition due to composting. Final report
The objective of this work was to provide data and methodology assisting the transfer and acceptance of composting technology for the remediation of explosives-contaminated soils and sediments. Issues and activities addressed included: (a) chemical and toxicological characterization of compost samples from new field composting experiments, and the environmental availability of composting efficiency by isolation of bacterial consortia and natural surfactants from highly efficient composts, and (c) improved assessment of compost product suitability for land application.
Date:
September 1, 1994
Creator:
Griest, W.H.; Stewart, A.J.; Ho, C.H.; Tyndall, R.L.; Vass, A.A.; Caton, J.E. et al.
System:
The UNT Digital Library
Fielding the magnetically applied pressure-shear technique on the Z accelerator (completion report for MRT 4519).
The recently developed Magnetically Applied Pressure-Shear (MAPS) experimental technique to measure material shear strength at high pressures on magneto-hydrodynamic (MHD) drive pulsed power platforms was fielded on August 16, 2013 on shot Z2544 utilizing hardware set A0283A. Several technical and engineering challenges were overcome in the process leading to the attempt to measure the dynamic strength of NNSA Ta at 50 GPa. The MAPS technique relies on the ability to apply an external magnetic field properly aligned and time correlated with the MHD pulse. The load design had to be modified to accommodate the external field coils and additional support was required to manage stresses from the pulsed magnets. Further, this represents the first time transverse velocity interferometry has been applied to diagnose a shot at Z. All subsystems performed well with only minor issues related to the new feed design which can be easily addressed by modifying the current pulse shape. Despite the success of each new component, the experiment failed to measure strength in the samples due to spallation failure, most likely in the diamond anvils. To address this issue, hydrocode simulations are being used to evaluate a modified design using LiF windows to minimize tension in the …
Date:
September 1, 2013
Creator:
Alexander, C. Scott; Haill, Thomas A.; Dalton, Devon Gardner; Rovang, Dean Curtis & Lamppa, Derek C.
System:
The UNT Digital Library
The TST: A small Steady-State Tokamak for Integrated Divertor Testing
This report discusses the following topics: The TST program; the TST physics basis; the TST auxiliary H&CD systems; the test divertors; the TST device; and ancillary systems.
Date:
September 1, 1993
Creator:
Peng, Y. K. M.; Colchin, R. J.; Swain, D. W.; Nelson, B. E. & Monday, J. F.
System:
The UNT Digital Library
Science and Technology Review October/November 2010
None
Date:
September 13, 2010
Creator:
Blobaum, K. J.
System:
The UNT Digital Library
Effect of rapid solidification on stainless steel weld metal microstructures and its implications on the Schaeffler diagram
An investigation was carried out to determine the effect of rapid solidification on the weld metal microstructure of austenitic stainless steels and its implication on the ferrite constitution diagram. A wide variety of stainless steels were laser welded at different welding speeds and laser power levels. Results indicate that both weld pool cooling rate and the postsolidification solid state cooling rates have a profound effect on the microstructures. For the steels investigated, the microstructures ranged from duplex austenite (..gamma..) + ferrite (delta) to fully austenitic or fully ferritic. These microstructures were found to be sensitive to both cooling rates and composition. The observed results are rationalized based on rapid solidification theory. This investigation indicates that solidification rates and postsolidification cooling rates have a profound effect on the observed microstructures, thus making it impossible to predict the microstructures of rapidly cooled weld metal from the conventional constitution diagrams. The influence of the observations made in this investigation on the Schaeffler diagram is demonstrated, and possible corrections to the constitution diagram incorporating the cooling rate effects are proposed. 23 refs., 17 figs., 4 tabs.
Date:
September 1, 1987
Creator:
David, S. A.; Vitek, J. M.; Reed, R. W. & Hebble, T. L.
System:
The UNT Digital Library
Systems study of drilling for installation of geothermal heat pumps
Geothermal, or ground-source, heat pumps (GHP) are much more efficient than air-source units such as conventional air conditioners. A major obstacle to their use is the relatively high initial cost of installing the heat-exchange loops into the ground. In an effort to identify drivers which influence installation cost, a number of site visits were made during 1996 to assess the state-of-the-art in drilling for GHP loop installation. As an aid to quantifying the effect of various drilling-process improvements, we constructed a spread-sheet based on estimated time and material costs for all the activities required in a typical loop-field installation. By substituting different (improved) values into specific activity costs, the effect on total project costs can be easily seen. This report contains brief descriptions of the site visits, key points learned during the visits, copies of the spread-sheet, recommendations for further work, and sample results from sensitivity analysis using the spread-sheet.
Date:
September 1, 1997
Creator:
Finger, J. T.; Sullivan, W. N.; Jacobson, R. D. & Pierce, K. G.
System:
The UNT Digital Library
Cross-section measurement for the /sup 7/Li(n,n't)/sup 4/He reaction at 14. 74 MeV
The cross section for the /sup 7/Li(n,n't)/sup 4/He reaction is measured at an average neutron energy of 14.74 MeV, with a resolution of 0.324 MeV, relative to the /sup 238/U neutron-fission cross section. Tritium activities for the irradiated lithium-metal samples (enriched to 99.95% in /sup 7/Li) are deduced using a liquid-scintillation counting method which relies upon the tritiated-water standard from the US National Bureau of Standards. The measured cross section ratio of /sup 7/Li(n,n't)/sup 4/He to /sup 238/U neutron fission is 0.2523 (+- 2.2%). The derived /sup 7/Li(n,n't)/sup 4/He reaction cross section is 0.301 (+- 5.3%) barn, based on the ENDF/B-V value of 1.193 (+- 4.8%) barn for the /sup 238/U neutron-fission cross section. 59 references.
Date:
September 1, 1984
Creator:
Smith, D. L.; Meadows, J. W.; Bretscher, M. M. & Cox, S. A.
System:
The UNT Digital Library
Accidental Radiation Excursion at the Y-12 Plant, June 16, 1958: Final Report
This report describes the circumstances leading to the accident, attempts to reconstruct the nuclear reactivity conditions, and reviews the dosimetric means and results which were used to help determine the exposure of affected employees.
Date:
September 12, 1958
Creator:
Patton, F. S.; Bailey, J. C.; Callihan, A. D.; Googin, J. M.; Jasny, G. R.; McAlduff, H. J. et al.
System:
The UNT Digital Library
A two-dimensional simulation of tritium transport in the vadose zone at the Nevada Test site
The site of a 0.75-kiloton underground nuclear explosion, the Cambric event, was selected for the study of radionuclide transport in the hydrologic environment. Water samples from RNM-2S, a well located 91 m from Cambric, have been analyzed for tritium and other radionuclides since the initiation of pumping. Water from RNM-2S flows to Frenchman Lake via an unlined canal. Flume data indicate canal transmission losses of approximately 2m{sup 3}/day/meter of canal. To determine if infiltrating canal water might be recirculated by RNM-2S, and therefore provide an additional radionuclide input to water samples collected at RNM-2S, a two-dimensional variably saturated solute transport computer model (SATURN, Huyakorn et al., 1983) was used to simulate the movement of tritium from the canal to the water table. Results indicate that recirculated canal water has not had a significant effect on the breakthrough of tritium at RNM-2S.
Date:
September 1, 1994
Creator:
Ross, W. C. & Wheatcraft, S. W.
System:
The UNT Digital Library
Vibrational energy transfer in selectively excited diatomic molecules. [Relaxation rates, self-relaxation, upper limits]
Single rovibrational states of HCl(v=2), HBr(v=2), DCl(v=2), and CO(v=2) were excited with a pulsed optical parametric oscillator (OPO). Total vibrational relaxation rates near - resonance quenchers were measured at 295/sup 0/K using time resolved infrared fluorescence. These rates are attributed primarily to V - V energy transfer, and they generally conform to a simple energy gap law. A small deviation was found for the CO(v) + DCl(v') relaxation rates. Upper limits for the self relaxation by V - R,T of HCl(v=2) and HBr(v=2) and for the two quantum exchange between HCl and HBr were determined. The HF dimer was detected at 295/sup 0/K and 30 torr HF pressure with an optoacoustic spectrometer using the OPO. Pulsed and chopped, resonant and non-resonant spectrophones are analyzed in detail. From experiments and first order perturbation theory, these V - V exchange rates appear to behave as a first order perturbation in the vibrational coordinates. The rotational dynamics are known to be complicated however, and the coupled rotational - vibrational dynamics were investigated theoreticaly in infinite order by the Dillon and Stephenson and the first Magnus approximations. Large ..delta..J transitions appear to be important, but these calculations differ by orders of magnitude on specific …
Date:
September 1, 1978
Creator:
Dasch, C.J.
System:
The UNT Digital Library
MINIMARS conceptual design: Final report
This volume contains the following sections: (1) fueling systems; (2) blanket; (3) alternative blanket concepts; (4) halo scraper/direct converter system study and final conceptual design; (5) heat-transport and power-conversion systems; (6) tritium systems; (7) minimars air detritiation system; (8) appropriate radiological safety design criteria; and (9) cost estimate. (MOW)
Date:
September 1, 1986
Creator:
Lee, J. D.
System:
The UNT Digital Library