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Best Match Title Creator Date Created (Newest) Date Created (Oldest) Date Added (Newest) Date Added (Oldest)
Hydrostratigraphy of the General Separations Area, Savannah River Site (SRS), South Carolina (open access)

Hydrostratigraphy of the General Separations Area, Savannah River Site (SRS), South Carolina

Detailed analysis and synthesis of geophysical, core, and hydrologic data from 230 wells were used to delineate the hydrostratigraphy and aquifer characteristics of the General Separations Area at SRS. The study area is hydrologically bounded on the north and northwest by Upper Three Runs Creek (UTRC) and on the south by Fourmile Branch (FB). The Cretaceous-Tertiary sedimentary sequence underlying the study area is divided into two Aquifer Systems; in ascending order, Aquifer Systems I and 11. The study concentrated on Aquifer System U, which includes all the Tertiary sediments above the Black Mingo Group (Paleocene) to the water table. This report includes a series of lithostratigraphic cross-sections, piezometric gradient profiles, head ratio contour maps, aquifer isopach maps, and potentiometric surface maps which illustrate the aquifer characteristics of the study area.
Date: January 1, 1991
Creator: Aadland, R. K.; Harris, M. K.; Lewis, C. M.; Gaughan, T. F. (Westinghouse Savannah River Co., Aiken, SC (United States)) & Westbrook, T. M. (Dames and Moore, Atlanta, GA (United States))
Object Type: Report
System: The UNT Digital Library
Lithological and hydrological characteristics of the tertiary hydrostratigraphic systems of the general separations area at the Savannah River Site (open access)

Lithological and hydrological characteristics of the tertiary hydrostratigraphic systems of the general separations area at the Savannah River Site

The General Separations Area (GSA) is an approximately 15-square-mile area near the geographic center of the Savannah River Site (SRS). The SRS is located in the Upper Atlantic Coastal Plain physiographic province of South Carolina on the Aiken Plateau at an elevation of approximately 300 feet above mean sea level. The sedimentary sequence of the GSA comprises unconsolidated sediments ranging in age from Cretaceous to Holocene with isolated zones of consolidated sediments. The Tertiary sediments are composed of sand, silt, clay, and calcareous materials of varying composition. The alpha-numeric hydrostratigraphic nomenclature proposed by Aadland (1990) is used herein. The Tertiary-age lithostratigraphic sequence at the GSA is composed predominantly of terrigenous clastics interspersed with carbonate-rich clastics and limestones. The calcareous lithologies are discontinuous and divided into a lower and upper zone. 15 refs., 2 figs.
Date: January 1, 1990
Creator: Aadland, R.K. (Westinghouse Savannah River Co., Aiken, SC (USA)); Harris, M.K. & Westbrook, T.M. (Dames and Moore, Atlanta, GA (USA))
Object Type: Article
System: The UNT Digital Library
Uranium hydrogeochemical and stream sediment reconnaissance in Lincoln and Flathead Counties, northwest Montana (open access)

Uranium hydrogeochemical and stream sediment reconnaissance in Lincoln and Flathead Counties, northwest Montana

Between mid-May and late June 1976, 3409 water and water-transported sediment samples were collected from 1781 locations spread over an approximate 17000-km/sup 2/ area of northwestern Montana. All of the samples were analyzed for total uranium at the LASL, using standardized procedures and rigorous quality controls, the waters by fluorometry and the sediment (and those waters with greater than 10 ppb uranium) by delayed-neutron counting methods. All of the field collection, treatment, and packaging of the samples was performed following strict LASL specifications. The uranium concentrations measured in the waters range from undetectable (less than 0.2) ppb to 173.6 ppb, but average only 0.66 ppb. The low uranium concentrations in the waters of this area are thought to be due primarily to a general lack of readily soluble uranium and dilution with spring runoff. Those locations which did have abnormally high uranium were examined more closely, and follow-up field examinations are recommended in the vicinity of some of these sites. The uranium content of the sediment samples range from 0.5 ppM to 52.2 ppM and average 4.56 ppM. Sample locations with high and/or anomalous uranium values were examined with respect to the local geology, water chemistry, and other relevant factors. …
Date: May 1, 1977
Creator: Aamodt, P. L.
Object Type: Report
System: The UNT Digital Library
Uranium Hydrogeochemical and Stream Sediment Pilot Study of the Boulder Batholith, Montana (open access)

Uranium Hydrogeochemical and Stream Sediment Pilot Study of the Boulder Batholith, Montana

This report presents the results of a uranium hydrogeochemical and stream sediment study made in the fall of 1976 of Boulder Batholith, Montana.
Date: March 1978
Creator: Aamodt, Paul L.
Object Type: Report
System: The UNT Digital Library
Uranium Hydrogeochemical and Stream Sediment Reconnaissance in Lincoln and Flathead Counties, Northwest Montana (open access)

Uranium Hydrogeochemical and Stream Sediment Reconnaissance in Lincoln and Flathead Counties, Northwest Montana

From abstract: Between mid-May and late June 1976, 3409 water and water-transported sediment samples were collected from 1781 locations spread over an approximate 17 000 kilometer area of northwestern Montana. All of the samples were analyzed for total uranium at the LASL, using standardized procedures and rigorous quality controls--the waters by fluorometry and the sediment (and those waters with >10 parts per billion uranium) by delayed-neutron counting methods.
Date: May 1977
Creator: Aamodt, Paul L.
Object Type: Report
System: The UNT Digital Library
Hydraulic fracture experiments in GT-1 and GT-2 (open access)

Hydraulic fracture experiments in GT-1 and GT-2

Hydraulic fracturing experiments were conducted in granite rock, at temperatures near 100 and 150/sup 0/C, in two wells 0.785 km (2575 ft) and 1.98 km (6500 ft) deep near Los Alamos, New Mexico. No unusual difficulty was observed in fracturing crystalline rock hydraulically. The apparent surface energy (energy required to create new fracture surface by breaking the rock) was measured as 100 J/m/sup 2/. Orientation of the deeper fracture was measured as N35/sup 0/E (+-5/sup 0/). The fraction of fluid injected into the rock that could be recovered at hydrostatic surface pressure was measured. The efficiency of recovery was as high as 92 percent after the fracture impedance was lowered by ''propping'' the fracture with sand. Permeability of the rock over the face of the fracture was compatible with laboratory measurements (10/sup -7/ to 10/sup -8/ darcys). Downhole pressures required to extend the fractures were about 150 and 340 bars (2175 and 4900 psi), respectively.
Date: February 1, 1977
Creator: Aamodt, R. L.
Object Type: Report
System: The UNT Digital Library
Basic research needed for the development of geothermal energy (open access)

Basic research needed for the development of geothermal energy

Basic research needed to facilitate development of geothermal energy is identified. An attempt has been made to make the report representative of the ideas of productive workers in the field. The present state of knowledge of geothermal energy is presented and then specific recommendations for further research, with status and priorities, are listed. Discussion is limited to a small number of applicable concepts, namely: origin of geothermal flux; transport of geothermal energy; geothermal reservoirs; rock-water interactions, and geophysical and geochemical exploration.
Date: October 1, 1980
Creator: Aamodt, R. L. & Riecker, R. E.
Object Type: Report
System: The UNT Digital Library
Induction and Growth of Fractures in Hot Rock: Artifical Geothermal Reservoirs. (open access)

Induction and Growth of Fractures in Hot Rock: Artifical Geothermal Reservoirs.

None
Date: January 1, 1972
Creator: Aamodt, R. L. & Smith, M. C.
Object Type: Report
System: The UNT Digital Library
Approaches to large scale unsaturated flow in heterogeneous, stratified, and fractured geologic media (open access)

Approaches to large scale unsaturated flow in heterogeneous, stratified, and fractured geologic media

This report develops a broad review and assessment of quantitative modeling approaches and data requirements for large-scale subsurface flow in radioactive waste geologic repository. The data review includes discussions of controlled field experiments, existing contamination sites, and site-specific hydrogeologic conditions at Yucca Mountain. Local-scale constitutive models for the unsaturated hydrodynamic properties of geologic media are analyzed, with particular emphasis on the effect of structural characteristics of the medium. The report further reviews and analyzes large-scale hydrogeologic spatial variability from aquifer data, unsaturated soil data, and fracture network data gathered from the literature. Finally, various modeling strategies toward large-scale flow simulations are assessed, including direct high-resolution simulation, and coarse-scale simulation based on auxiliary hydrodynamic models such as single equivalent continuum and dual-porosity continuum. The roles of anisotropy, fracturing, and broad-band spatial variability are emphasized. 252 refs.
Date: August 1, 1991
Creator: Ababou, R.
Object Type: Report
System: The UNT Digital Library
Soviet Oil Politics and the Middle East (open access)

Soviet Oil Politics and the Middle East

This investigation, covering the past two decades, attempts to determine what benefits the Soviets have sought to gain in their relationships with Middle Eastern oil-producing nations. Chapter I surveys the U.S.S.R.'s oil industry and its tentative prospects for the 1980's. Chapter II discusses Soviet involvement in the Middle East since 1950, including nationalization and oil embargoes. In Chapter III, developments less favorable to the U.S.S.R. are, analyzed: the growing influence of conservative, anti -Soviet oil-producing states and the deradicalization of other Middle Eastern nations. Chapter IV concludes that the Soviets have met with varying success in their Middle Eastern involvements. The future of their oil industry remains uncertain.
Date: December 1979
Creator: Abbas, Ehsan A. R.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Smoothing the information seeking path: Removing representational obstacles in the middle-school digital library. (open access)

Smoothing the information seeking path: Removing representational obstacles in the middle-school digital library.

Middle school student's interaction within a digital library is explored. Issues of interface features used, obstacles encountered, search strategies and search techniques used, and representation obstacles are examined. A mechanism for evaluating user's descriptors is tested and effects of augmenting the system's resource descriptions with these descriptors on retrieval is explored. Transaction log data analysis (TLA) was used, with external corroborating achievement data provided by teachers. Analysis was conducted using quantitative and qualitative methods. Coding schemes for the failure analysis, search strategies and techniques analysis, as well as extent of match analysis between terms in student's questions and their search terms, and extent of match analysis between search terms and controlled vocabulary were developed. There are five chapters with twelve supporting appendixes. Chapter One presents an introduction to the problem and reviews the pilot study. Chapter Two presents the literature review and theoretical basis for the study. Chapter Three describes the research questions, hypotheses and methods. Chapter Four presents findings. Chapter Five presents a summary of the findings and their support of the hypotheses. Unanticipated findings, limitations, speculations, and areas of further research are indicated. Findings indicate that middle school users interact with the system in various sequences of patterns. …
Date: May 2002
Creator: Abbas, June M.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Federal energy organization (open access)

Federal energy organization

This report presents information about Federal energy organization for handling the energy issues with in nation's interest.
Date: March 4, 1975
Creator: Abbasi, Susan R.
Object Type: Report
System: The UNT Digital Library
The Ringling Eagle (Ringling, Okla.), Vol. 13, No. 31, Ed. 1 Thursday, January 25, 1923 (open access)

The Ringling Eagle (Ringling, Okla.), Vol. 13, No. 31, Ed. 1 Thursday, January 25, 1923

Weekly newspaper from Ringling, Oklahoma that includes local, state, and national news along with advertising.
Date: January 25, 1923
Creator: Abbey, D. P.
Object Type: Newspaper
System: The Gateway to Oklahoma History
Evaluation of Ultra Clean Fuels from Natural Gas (open access)

Evaluation of Ultra Clean Fuels from Natural Gas

ConocoPhillips, in conjunction with Nexant Inc., Penn State University, and Cummins Engine Co., joined with the U.S. Department of Energy (DOE) National Energy Technology Laboratory (NETL) in a cooperative agreement to perform a comprehensive study of new ultra clean fuels (UCFs) produced from remote sources of natural gas. The project study consists of three primary tasks: an environmental Life Cycle Assessment (LCA), a Market Study, and a series of Engine Tests to evaluate the potential markets for Ultra Clean Fuels. The overall objective of DOE's Ultra Clean Transportation Fuels Initiative is to develop and deploy technologies that will produce ultra-clean burning transportation fuels for the 21st century from both petroleum and non-petroleum resources. These fuels will: (1) Enable vehicles to comply with future emission requirements; (2) Be compatible with the existing liquid fuels infrastructure; (3) Enable vehicle efficiencies to be significantly increased, with concomitantly reduced CO{sub 2} emissions; (4) Be obtainable from a fossil resource, alone or in combination with other hydrocarbon materials such as refinery wastes, municipal wastes, biomass, and coal; and (5) Be competitive with current petroleum fuels. The objectives of the ConocoPhillips Ultra Clean Fuels Project are to perform a comprehensive life cycle analysis and to conduct …
Date: February 28, 2006
Creator: Abbott, Robert; Casey, Edward; Esen, Etop; Smith, Douglas; Burke, Bruce; Nguyen, Binh et al.
Object Type: Report
System: The UNT Digital Library
Characterization of surfactants in the presence of oil for steam foam application (open access)

Characterization of surfactants in the presence of oil for steam foam application

The steam foam process has been applied in the oil fields since the late 1970`s. The mechanism of the process, however, is not known fully; particularly the detrimental effects of oil on foam, while known, are still unexplained. Understanding the mechanisms of foam generation, stability, and mobility of foam to improve the development of field level projects has been the focus of the attention of many workers of the oil industry. Extensive laboratory studies have been carried out, mostly without oil but some with oil. This study falls in the later category. A one dimensional sandpack (6 ft X 2.15 in) model is used to investigate the behavior of four anionic sulfonate surfactants of varying chemical structure with steam. The study is performed with an crude oil at residual oil saturation of about 12 percent of the pore volume. The observed pressure drops across the various sections of the pack are used to study the behavior of the surfactant. The tested surfactants vary in chain length, aromatic structure and number of ionic charges. A linear toluene sulfonate produced the highest strength foam in presence of the oil at residual saturations, as compared to the alpha olefin sulfonates. This is in …
Date: December 1, 1992
Creator: Abdul-Razzaq & Castanier, L. M.
Object Type: Report
System: The UNT Digital Library
Characterization of surfactants in the presence of oil for steam foam application (open access)

Characterization of surfactants in the presence of oil for steam foam application

The steam foam process has been applied in the oil fields since the late 1970's. The mechanism of the process, however, is not known fully; particularly the detrimental effects of oil on foam, while known, are still unexplained. Understanding the mechanisms of foam generation, stability, and mobility of foam to improve the development of field level projects has been the focus of the attention of many workers of the oil industry. Extensive laboratory studies have been carried out, mostly without oil but some with oil. This study falls in the later category. A one dimensional sandpack (6 ft X 2.15 in) model is used to investigate the behavior of four anionic sulfonate surfactants of varying chemical structure with steam. The study is performed with an crude oil at residual oil saturation of about 12 percent of the pore volume. The observed pressure drops across the various sections of the pack are used to study the behavior of the surfactant. The tested surfactants vary in chain length, aromatic structure and number of ionic charges. A linear toluene sulfonate produced the highest strength foam in presence of the oil at residual saturations, as compared to the alpha olefin sulfonates. This is in …
Date: December 1, 1992
Creator: Abdul-Razzaq & Castanier, L.M.
Object Type: Report
System: The UNT Digital Library
Interagency Geothermal Coordinating Council fifth annual report. Final draft (open access)

Interagency Geothermal Coordinating Council fifth annual report. Final draft

Geothermal energy is the natural heat of the earth, and can be tapped as a clean, safe, economical alternative source of energy. Much of the geothermal energy resource is recoverable with current or near-current technology and could make a significant contribution both to increasing domestic energy supplies and to reducing the US dependence on imported oil. Geothermal energy can be used for electric power production, residential and commercial space heating and cooling, industrial process heat, and agricultural process applications. This report describes the progress for fiscal year 1980 (FY80) of the Federal Geothermal Program. It also summarizes the goals, strategy, and plans which form the basis for the FY81 and FY82 program activities and reflects the recent change in national policy affecting Federal research, development and demonstration programs. The Interagency Geothermal Coordinating Council (IGCC) believes that substantial progress can and will be made in the development of geothermal energy. The IGCC goals are: (1) reduce the institutional barriers so that geothermal projects can be on-line in one-half the current time; (2) make moderate temperature resources an economically competitive source of electricity; (3) remove the backlog of noncompetitive lease applications; (4) competitive lease all KGRA lands; and (5) cut the cost …
Date: July 7, 1981
Creator: Abel, Fred H.
Object Type: Report
System: The UNT Digital Library
Care of Food in the Home (open access)

Care of Food in the Home

Report discussing the proper methods of handling and preserving food. Topics discussed include mold, flies, dust, pet hair and dander, cold storage techniques, and disinfectants. Includes an index.
Date: 1910
Creator: Abel, Mary Hinman, 1850-1938
Object Type: Pamphlet
System: The UNT Digital Library
The New Cass County Sun (Linden, Tex.), Vol. 105, No. 22, Ed. 1 Wednesday, June 3, 1981 (open access)

The New Cass County Sun (Linden, Tex.), Vol. 105, No. 22, Ed. 1 Wednesday, June 3, 1981

Weekly newspaper from Linden, Texas that includes local, state and national news along with advertising.
Date: June 3, 1981
Creator: Abeles, Neil
Object Type: Newspaper
System: The Portal to Texas History
LSST Science Book, Version 2.0 (open access)

LSST Science Book, Version 2.0

None
Date: July 9, 2013
Creator: Abell, Paul A.; Allison, Julius; Anderson, Scott F.; Andrew, John R.; Angel, J.; Roger, P. et al.
Object Type: Article
System: The UNT Digital Library
[Letter from D. A. Abernathy to T. N. Carswell - August 4, 1944] (open access)

[Letter from D. A. Abernathy to T. N. Carswell - August 4, 1944]

A letter written to Mr. Tommie Carswell, Abilene, Texas, from D. A. Abernathy, Adj, F. A. Post 75, Mineral Wells, Texas, dated August 4, 1944. Abernathy advises of his previous plans to be out of state on vacation at the time of the conference and asks Carswell to serve for him on the Publications Committee at the Fort Worth War Conference.
Date: August 4, 1944
Creator: Abernathy, D. A.
Object Type: Letter
System: The Portal to Texas History
A Low Cost Experimental Neutron Chain Reactor Part 2 (open access)

A Low Cost Experimental Neutron Chain Reactor Part 2

Description of cooling, shielding, controls are discussed for 100 kw and 1 Mw operation of a low cost experimental neutron chain reactor.
Date: February 5, 1954
Creator: Abernathy, Fred H.; Barrett, Lawrence G.; Berger, William A.; Dever, John A.; Maurer, John F.; Mesler, Russell B. et al.
Object Type: Report
System: The UNT Digital Library
Native American fishery issues: Hanford involvement in evaluation of the Zone 6 fishery (open access)

Native American fishery issues: Hanford involvement in evaluation of the Zone 6 fishery

Native American fishers are concerned about the deteriorating quality of salmon and other fish caught from the Columbia River. They fear salmon are not healthy and that eating the fish could Jeopardize the health of Native Americans. In 1991, the Pacific Northwest Laboratory (PNL). with the assistance of the Yakima Indian Nation (YIN). monitored the salmon and steelhead fishery in the lower Columbia River (Zone 6 fishery). PNL biologists set up a hot-line'' for Native American fishers to call if they caught fish they suspected were diseased or contaminated. Fish reported to the hot-line were examined by a fish disease pathologist. Additionally. PNL and YIN staff reviewed water-quality data of the lower Columbia River. Water-quality data collected from 1949 through 1990. Results are described.
Date: July 1, 1992
Creator: Abernethy, C.S.; Neitzel, D.A. (Pacific Northwest Lab., Richland, WA (United States)) & Strom, G. (Yakima Indian Nation, Toppenish, WA (United States))
Object Type: Report
System: The UNT Digital Library
Tales From the Big Thicket

Tales From the Big Thicket

Access: Use of this item is restricted to the UNT Community
Edited collection of writing about the Big Thicket area in Texas, including geographic descriptions, anecdotes, historical accounts, and other aspects of the people and features of the region. Index starts on page 235.
Date: February 15, 2002
Creator: Abernethy, Francis E.
Object Type: Book
System: The UNT Digital Library