Resource Type

Degree Department

MuSR Beam Line Design Studies (open access)

MuSR Beam Line Design Studies

N/A
Date: December 13, 2013
Creator: MacKay W. W.; Fischer, W.; Pile, P. & Blaskiewicz, M.
System: The UNT Digital Library
Photoelectron photoion molecular beam spectroscopy (open access)

Photoelectron photoion molecular beam spectroscopy

The use of supersonic molecular beams in photoionization mass spectroscopy and photoelectron spectroscopy to assist in the understanding of photoexcitation in the vacuum ultraviolet is described. Rotational relaxation and condensation due to supersonic expansion were shown to offer new possibilities for molecular photoionization studies. Molecular beam photoionization mass spectroscopy has been extended above 21 eV photon energy by the use of Stanford Synchrotron Radiation Laboratory (SSRL) facilities. Design considerations are discussed that have advanced the state-of-the-art in high resolution vuv photoelectron spectroscopy. To extend gas-phase studies to 160 eV photon energy, a windowless vuv-xuv beam line design is proposed.
Date: December 1, 1980
Creator: Trevor, D.J.
System: The UNT Digital Library
Refabrication and Encapsulation of Highly Irradiated Uranium Dioxide (open access)

Refabrication and Encapsulation of Highly Irradiated Uranium Dioxide

Abstract: One hundred gram quantities of uranium dioxide, irradiated to burnup as great as 21,000 Mwd/MTU and previously reprocessed by AIROX (Atomics International Reduction Oxidation), were refabricated into high density pellets and encapsulated for re-irradiation.
Date: December 1, 1964
Creator: Guon, J.; Bodine, J. E. & Sullivan, R. J.
System: The UNT Digital Library
National profile on commercially generated low-level radioactive mixed waste (open access)

National profile on commercially generated low-level radioactive mixed waste

This report details the findings and conclusions drawn from a survey undertaken as part of a joint US Nuclear Regulatory Commission and US Environmental Protection Agency-sponsored project entitled ``National Profile on Commercially Generated Low-Level Radioactive Mixed Waste.`` The overall objective of the work was to compile a national profile on the volumes, characteristics, and treatability of commercially generated low-level mixed waste for 1990 by five major facility categories-academic, industrial, medical, and NRC-/Agreement State-licensed goverment facilities and nuclear utilities. Included in this report are descriptions of the methodology used to collect and collate the data, the procedures used to estimate the mixed waste generation rate for commercial facilities in the United States in 1990, and the identification of available treatment technologies to meet applicable EPA treatment standards (40 CFR Part 268) and, if possible, to render the hazardous component of specific mixed waste streams nonhazardous. The report also contains information on existing and potential commercial waste treatment facilities that may provide treatment for specific waste streams identified in the national survey. The report does not include any aspect of the Department of Energy`s (DOES) management of mixed waste and generally does not address wastes from remedial action activities.
Date: December 1, 1992
Creator: Klein, J. A.; Mrochek, J. E.; Jolley, R. L.; Osborne-Lee, I. W.; Francis, A. A. & Wright, T.
System: The UNT Digital Library
ORLIB: a computer code that produces one-energy group, time- and spatially-averaged neutron cross sections (open access)

ORLIB: a computer code that produces one-energy group, time- and spatially-averaged neutron cross sections

Calculation of neutron activation of proposed fusion reactors requires a library of neutron-activation cross sections. One such library is ACTL, which is being updated and expanded by Howerton. If the energy-dependent neutron flux is also known as a function of location and time, the buildup and decay of activation products can be calculated. In practice, hand calculation is impractical without energy-averaged cross sections because of the large number of energy groups. A widely used activation computer code, ORIGEN2, also requires energy-averaged cross sections. Accordingly, we wrote the ORLIB code to collapse the ACTL library, using the flux as a weighting function. The ORLIB code runs on the LLNL Cray computer network. We have also modified ORIGEN2 to accept the expanded activation libraries produced by ORLIB.
Date: December 1, 1981
Creator: Blink, J. A.; Dye, R. E. & Kimlinger, J. R.
System: The UNT Digital Library
Exploring the Possible Use of Information Barriers for future Biological Weapons Verification Regimes (open access)

Exploring the Possible Use of Information Barriers for future Biological Weapons Verification Regimes

This report describes a path forward for implementing information barriers in a future generic biological arms-control verification regime. Information barriers have become a staple of discussion in the area of arms control verification approaches for nuclear weapons and components. Information barriers when used with a measurement system allow for the determination that an item has sensitive characteristics without releasing any of the sensitive information. Over the last 15 years the United States (with the Russian Federation) has led on the development of information barriers in the area of the verification of nuclear weapons and nuclear components. The work of the US and the Russian Federation has prompted other states (e.g., UK and Norway) to consider the merits of information barriers for possible verification regimes. In the context of a biological weapons control verification regime, the dual-use nature of the biotechnology will require protection of sensitive information while allowing for the verification of treaty commitments. A major question that has arisen is whether - in a biological weapons verification regime - the presence or absence of a weapon pathogen can be determined without revealing any information about possible sensitive or proprietary information contained in the genetic materials being declared under a …
Date: December 20, 2011
Creator: Luke, S J
System: The UNT Digital Library
Potential conservation opportunities from the use of low-pressure irrigation in the Pacific Northwest region (open access)

Potential conservation opportunities from the use of low-pressure irrigation in the Pacific Northwest region

Four types of low-pressure irrigation technologies were examined in reference to their energy-savings potential and their costs per kWh of savings. Various conversion alternatives were selected for analysis from among the technologies of low-pressure single spray systems, low-pressure spray booms, furrow drop-tubes, and low-pressure impact sprinklers. A summary of the conversion alternatives that were analyzed and the major results for each alternative is presented. The energy-savings input parameters selected for use in this analysis were generally in the low range of available estimates and the cost input parameters were generally in the high range of available estimates.
Date: December 1, 1984
Creator: Harrer, B.J. & Lezberg, A.J.
System: The UNT Digital Library
Unsaturated Zone and Saturated Zone Transport Properties (U0100) (open access)

Unsaturated Zone and Saturated Zone Transport Properties (U0100)

This Analysis/Model Report (AMR) summarizes transport properties for the lower unsaturated zone hydrogeologic units and the saturated zone at Yucca Mountain and provides a summary of data from the Busted Butte Unsaturated Zone Transport Test (UZTT). The purpose of this report is to summarize the sorption and transport knowledge relevant to flow and transport in the units below Yucca Mountain and to provide backup documentation for the sorption parameters decided upon for each rock type. Because of the complexity of processes such as sorption, and because of the lack of direct data for many conditions that may be relevant for Yucca Mountain, data from systems outside of Yucca Mountain are also included. The data reported in this AMR will be used in Total System Performance Assessment (TSPA) calculations and as general scientific support for various Process Model Reports (PMRs) requiring knowledge of the transport properties of different materials. This report provides, but is not limited to, sorption coefficients and other relevant thermodynamic and transport properties for the radioisotopes of concern, especially neptunium (Np), plutonium (Pu), Uranium (U), technetium (Tc), iodine (I), and selenium (Se). The unsaturated-zone (UZ) transport properties in the vitric Calico Hills (CHv) are discussed, as are colloidal …
Date: December 20, 2000
Creator: Conca, J.
System: The UNT Digital Library
The oncogenic action of ionizing radiation on rat skin. Final progress report, May 1, 1990--April 30, 1992 (open access)

The oncogenic action of ionizing radiation on rat skin. Final progress report, May 1, 1990--April 30, 1992

The multistage theory of carcinogenesis specifies that cells progress to cancer through a series of discrete, irreversible genetic alterations, but data on radiation-induced cancer incidence in rat skin suggests that an intermediate repairable alteration may occur. Data are presented on cancer induction in rat skin exposed to an electron beam (LET=0.34 keV/{mu}), a neon ion beam (LET=45) or an argon ion beam (LET=125). The rats were observed for tumors at least 78 weeks with squamous and basal cell carcinomas observed. The total cancer yield was fitted by the quadratic equation, and the equation parameters were estimated by linear regression for each type of radiation. Analysis of the DNA from the electron-induced carcinomas indicated that K-ras and/or c-myc oncogenes were activated. In situ hybridization indicated that the cancers contain subpopulations of cells with differing amounts of c-myc and H-ras amplification. The results are consistent with the idea that ionizing radiation produces stable, carcinogenically relevant lesions via 2 repairable events at low LET and via a non-repairable linked event pathway at high LET; either pathway may advance the cell by 1 stage. The proliferative response of rat epidermis following exposure to ionizing radiation was quantified by injection of {sup 14}C-thymidine. The return …
Date: December 31, 1992
Creator: Burns, F. J. & Garte, S. J.
System: The UNT Digital Library
Vehicle to Grid Demonstration Project (open access)

Vehicle to Grid Demonstration Project

This report summarizes the activities and accomplishments of a two-year DOE-funded project on Grid-Integrated Vehicles (GIV) with vehicle to grid power (V2G). The project included several research and development components: an analysis of US driving patterns; an analysis of the market for EVs and V2G-capable EVs; development and testing of GIV components (in-car and in-EVSE); interconnect law and policy; and development and filing of patents. In addition, development activities included GIV manufacturing and licensing of technologies developed under this grant. Also, five vehicles were built and deployed, four for the fleet of the State of Delaware, plus one for the University of Delaware fleet.
Date: December 31, 2010
Creator: Kempton, Willett; Gardner, Meryl; Hidrue, Michael; Kamilev, Fouad; Kamboj, Sachin; Lilley, Jon et al.
System: The UNT Digital Library
In Situ Field Testing of Processes (open access)

In Situ Field Testing of Processes

The purpose of this Analysis/Model Report (AMR) is to update and document the data and subsequent analyses from ambient field-testing activities performed in underground drifts of the Yucca Mountain Site Characterization Project (YMP). This revision updates data and analyses presented in the initial issue of this AMR. This AMR was developed in accordance with the ''Technical Work Plan for Unsaturated Zone (UZ) Flow and Transport Process Model Report'' and ''Technical Work Plan for UZ Flow, Transport, and Coupled Processes Process Model Report. These activities were performed to investigate in situ flow and transport processes. The evaluations provide the necessary framework to: (1) refine and confirm the conceptual model of matrix and fracture processes in the unsaturated zone (UZ) and (2) analyze the impact of excavation (including use of construction water and effect of ventilation) on the UZ flow and transport processes. This AMR is intended to support revisions to ''Conceptual and Numerical Models for UZ Flow and Transport'' and ''Unsaturated Zone Flow and Transport Model Process Model Report''. In general, the results discussed in this AMR are from studies conducted using a combination or a subset of the following three approaches: (1) air-injection tests, (2) liquid-release tests, and (3) moisture …
Date: December 14, 2001
Creator: Wang, J.
System: The UNT Digital Library
MINIMARS conceptual design: Report I. Volume 1 (open access)

MINIMARS conceptual design: Report I. Volume 1

Engineering parameters and by features of MINIMARS are presented. Topics discussed are startup, halo physics, drift pumping, magnet design, shielding, injector systems, electrical systems, fueling systems, free electric laser, blankets, heat tansport, tritium systems, configuration, assembly and maintainence, and cost. 115 refs., 112 figs., 44 tabs. (WRF)
Date: December 1, 1985
Creator: Lee, J.D. (ed.)
System: The UNT Digital Library
Semiannual technical progress report: Advanced development of PV encapsulants. Annual subcontract report, 1 January 1993--30 June 1993 (open access)

Semiannual technical progress report: Advanced development of PV encapsulants. Annual subcontract report, 1 January 1993--30 June 1993

This report describes the results of the literature search, interviews, and site visits conducted during the first six months of this subcontract. This survey was conducted to establish a baseline of information about thermal and photothermal degradation of EVA and case history surveys on discoloration (yellowing/browning) of EVA-based encapsulants in fielded flat-plate PV modules. The literature search revealed that EVA will undergo thermolysis of the acetate groups at temperatures of 130{degrees}C to 150{degrees}C and above, leading to formation of double bonds in the backbone of the copolymer. The survey of case histories of EVA-based encapsulant discoloration in fielded modules in the United States revealed that the problem is limited to those areas of the west and southwest that have comparatively high solar insolation and ambient temperature. It is clear that the discoloration problem is not limited to the modules of any one manufacturer. Discoloration in the EVA encapsulant was experienced in fielded modules from all major US module producers.
Date: December 1, 1993
Creator: Holley, W. H.
System: The UNT Digital Library
Noise considerations in millimeter-wave spectrometers (open access)

Noise considerations in millimeter-wave spectrometers

An improved version of a microwave spectrometer operating in the vicinity of 70 GHz is described. The spectrometer, which incorporates a Fabry-Perot resonator and superheterodyne detection for high sensitivity is designed for the detection of gaseous pollutants and other atmospheric constituents. The instrument is capable of detecting polar molecules with absorption coefficients as small as 2 x 10/sup -9/cm/sup -1/. For sulphur dioxide diluted in air, this sensitivity corresponds to a detection limit of 1.2 ppm without preconcentration and with a time constant of 1 second. Measurements and analysis of the noise contributions limiting the sentivity are presented.
Date: December 1, 1978
Creator: Zoellner, W.D.; Kolbe, W.F. & Leskovar, B.
System: The UNT Digital Library
Low Odor, High Yield Kraft Pulping (open access)

Low Odor, High Yield Kraft Pulping

In laboratory cooks pure oxygen was profiled into the circulation line of a batch digester during two periods of the cooking cycle: The first injection occurred during the heating steps for the purpose of in-situ generation of polysulfide. This chip treatment was studied to explore stabilization against alkaline induced carbohydrate peeling and to increase pulp yield. Under optimum conditions small amounts of polysulfide were produced with yield increase of about 0.5% These increases fell below earlier reports suggesting that unknown differences in liquor composition may influence the relative amounts of polysulfide and thiosulfate generated during the oxidation. Consequently, further studies are required to understand the factors that influence the ratios of those two sulfur species.
Date: December 15, 2000
Creator: McKean, W. T.
System: The UNT Digital Library
Phase 1 data summary report for the Clinch River Remedial Investigation: Health risk and ecological risk screening assessment (open access)

Phase 1 data summary report for the Clinch River Remedial Investigation: Health risk and ecological risk screening assessment

The Clinch River Remedial Investigation (CRRI) is designed to address the transport, fate, and distribution of waterborne contaminants released from the US Department of Energy's (DOE's) Oak Ridge Reservation (ORR) and to assess potential risks to human health and the environment associated with these contaminants. The contaminants released since the early 1940s include a variety of radionuclides, metals, and organic compounds. The purpose of this report is to summarize the results of Phase 1 of the CRRI. Phase 1 was designed to (1) obtain high-quality data to confirm existing historical data for contaminant levels in fish, sediment, and water from the CR/WBR; (2) determine the in the range of contaminant concentrations present river-reservoir system; (3) identify specific contaminants of concern; and (4) establish the reference (background) concentrations for those contaminants.
Date: December 1, 1992
Creator: Cook, R. B.; Adams, S. M.; Beauchamp, J. J.; Bevelhimer, M. S.; Blaylock, B. G.; Brandt, C. C. et al.
System: The UNT Digital Library
Phase 1 data summary report for the Clinch River Remedial Investigation: Health risk and ecological risk screening assessment. Environmental Restoration Program (open access)

Phase 1 data summary report for the Clinch River Remedial Investigation: Health risk and ecological risk screening assessment. Environmental Restoration Program

The Clinch River Remedial Investigation (CRRI) is designed to address the transport, fate, and distribution of waterborne contaminants released from the US Department of Energy`s (DOE`s) Oak Ridge Reservation (ORR) and to assess potential risks to human health and the environment associated with these contaminants. The contaminants released since the early 1940s include a variety of radionuclides, metals, and organic compounds. The purpose of this report is to summarize the results of Phase 1 of the CRRI. Phase 1 was designed to (1) obtain high-quality data to confirm existing historical data for contaminant levels in fish, sediment, and water from the CR/WBR; (2) determine the in the range of contaminant concentrations present river-reservoir system; (3) identify specific contaminants of concern; and (4) establish the reference (background) concentrations for those contaminants.
Date: December 1, 1992
Creator: Cook, R. B.; Adams, S. M.; Beauchamp, J. J.; Bevelhimer, M. S.; Blaylock, B. G.; Brandt, C. C. et al.
System: The UNT Digital Library
Applications of the VARGOW oil reservoir model (open access)

Applications of the VARGOW oil reservoir model

This report is a continuation of work performed previously and serves as an addendum to the previous report (PNL-3478). The purpose of this study is to perform additional simulations of three reservoirs using the VARGOW model. VARGOW is a variable gas-oil-water reservoir model that was developed by the US Geological Survey to provide recovery estimates suitable for assessing various reservoir production policies and regulations. One of the reservoirs was resimulated using better initial condition data. The other reservoirs were simulated using a modified gas segregation model. The major conclusions drawn from the study are that the VARGOW model can usually predict the reservoir pressure adequately but the producing gas/oil ratio is not as successfully simulated.
Date: December 1, 1980
Creator: Mayer, D.W.
System: The UNT Digital Library
Geology and alteration of the Baltazor Hot Springs and Painted Hills Thermal Areas, Humboldt County, Nevada (open access)

Geology and alteration of the Baltazor Hot Springs and Painted Hills Thermal Areas, Humboldt County, Nevada

The Baltazor Hot Springs KGRA and nearby Painted Hills thermal area are situated in Humboldt County, northwestern Nevada along the northwestern margin of the Basin and Range province. The oldest rocks exposed in the Baltazor area are eugeosynclinal metasedimentary and subordinate metavolcanic rocks of Permian to Triassic age intruded by Cretaceous diorite and quartz diorite. These are overlain by a thick volcanic and volcaniclastic sequence of Miocene through Pliocene age. Pre-Tertiary rocks are not exposed in the Painted Hills. Principal structures in the Baltazor area are intersecting high-angle normal faults which trend northerly and northwesterly. Quaternary landslides are dominant in the Painted Hills, although northerly- and northwesterly-trending high-angle faults are also present. Hydrothermal alteration and mineralization at Baltazor and in the Painted Hills are of several different styles and ages. Copper-bearing quartz veins in pre-Tertiary rocks antedate Cenozoic volcanism and sedimentation. The heat source for thermal phenomena and alteration in both areas is probably deep fault-controlled fluid circulation coupled with an abnormally high regional thermal gradient. (MHR)
Date: December 1, 1979
Creator: Hulen, J. B.
System: The UNT Digital Library
Critique and sensitivity analysis of the compensation function used in the LMS Hudson River striped bass models. Environmental Sciences Division publication No. 944 (open access)

Critique and sensitivity analysis of the compensation function used in the LMS Hudson River striped bass models. Environmental Sciences Division publication No. 944

The description and justification for the compensation function developed and used by Lawler, Matusky and Skelly Engineers (LMS) (under contract to Consolidated Edison Company of New York) in their Hudson River striped bass models are presented. A sensitivity analysis of this compensation function is reported, based on computer runs with a modified version of the LMS completely mixed (spatially homogeneous) model. Two types of sensitivity analysis were performed: a parametric study involving at least five levels for each of the three parameters in the compensation function, and a study of the form of the compensation function itself, involving comparison of the LMS function with functions having no compensation at standing crops either less than or greater than the equilibrium standing crops. For the range of parameter values used in this study, estimates of percent reduction are least sensitive to changes in YS, the equilibrium standing crop, and most sensitive to changes in KXO, the minimum mortality rate coefficient. Eliminating compensation at standing crops either less than or greater than the equilibrium standing crops results in higher estimates of percent reduction. For all values of KXO and for values of YS and KX at and above the baseline values, eliminating compensation …
Date: December 1, 1976
Creator: Van Winkle, W.; Christensen, S. W. & Kauffman, G.
System: The UNT Digital Library
Presidential Nominating Process: Current Issues (open access)

Presidential Nominating Process: Current Issues

Pressure to change the nominating system mounted in the turbulent political climate of the 1960s, due to the perception that the process was undemocratic. A transforming event occurred at the Democratic convention in 1968, where violent confrontations between war protesters and the Chicago police outside the convention hall, and bitter credentials disputes inside, spurred Democrats to completely change the party's nominating rules. The new rules transferred the power of choosing delegates from party leaders to rank-and-file voters, opening the process to widespread popular participation for the first time. Many state parties switched to primaries to comply with the newly adopted national party rules. The Republican Party also modified its rules in the early 1970s.
Date: December 30, 2011
Creator: Coleman, Kevin J.
System: The UNT Digital Library
The study of human mutation rates. Progress report, 1989--1992 (open access)

The study of human mutation rates. Progress report, 1989--1992

We will describe recent developments regarding the question of induced mutations in the survivors of the atomic bombings of Hiroshima and Nagasaki. As part of that work we, describe some developments with respect to the Amerindian blood samples collected under DoE sponsorship between 1964 and 1982. Then developments regarding the application of two-dimensional polyacrylamide gel electrophoresis (2-D PAGE) to the study of genetic variation and mutation affecting protein characteristics. In particular, we will report on the identification and isolation of genes of especial interest as reflected in the behavior of the proteins which they encode.
Date: December 1, 1992
Creator: Neel, J. V.
System: The UNT Digital Library
Theoretical Calculations of the Lateral Stability Derivatives for Triangular Vertical Tails with Subsonic Leading Edges Traveling at Supersonic Speeds (open access)

Theoretical Calculations of the Lateral Stability Derivatives for Triangular Vertical Tails with Subsonic Leading Edges Traveling at Supersonic Speeds

Note presenting pressure-distribution expressions and stability derivatives derived by use of linear theory for zero-end-plate triangular vertical tails with subsonic leading edges performing rolling, yawing, and constant-lateral-acceleration motions. Corresponding results for the sideslip motion, most of which have been previously reported, are also included.
Date: December 1954
Creator: Bobbitt, Percy J.
System: The UNT Digital Library
Environmental Survey Report for the ETTP: Environmental Management Waste Management Facility (EMWMF) Haul Road Corridor, Oak Ridge, Tennessee (open access)

Environmental Survey Report for the ETTP: Environmental Management Waste Management Facility (EMWMF) Haul Road Corridor, Oak Ridge, Tennessee

This report summarizes the results of environmental surveys conducted within the corridor of a temporary haul road (''Haul Road'') to be constructed from East Tennessee Technology Park (ETTP) to the Environmental Management Waste Management Facility (EMWMF) located just west of the Y-12 National Security Complex (Y-12). Environmental surveys were conducted by natural resource experts at Oak Ridge National Laboratory who routinely assess the significance of various project activities on the Oak Ridge Reservation (ORR). ORNL assistance to the Haul Road Project included environmental assessments necessary to determine the best route for minimizing impacts to sensitive resources such as wetlands or rare plants. Once the final route was chosen, environmental surveys were conducted within the corridor to evaluate the impacts to sensitive resources that could not be avoided. The final Haul Road route follows established roads and a power-line corridor to the extent possible (Fig. 1). Detailed explanation regarding the purpose of the Haul Road and the regulatory context associated with its construction is provided in at least two major documents and consequently is not presented here: (1) Explanation of Significant Differences for the Record of Decision for the Disposal of Oak Ridge Reservation Comprehensive Environmental Response, Compensation, and Liability Act …
Date: December 20, 2005
Creator: Peterson, M. J.
System: The UNT Digital Library