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Trace Elements and Common Ions in Southeastern Idaho Snow: Regional Air Pollutant Tracers for Source Area Emissions
Snow samples were collected in southeastern Idaho over two winters to assess trace elements and common ions concentrations in air pollutant fallout across the region. The objectives were to: 1) develop sampling and analysis techniques that would produce accurate measurements of a broad suite of elements and ions in snow, 2) identify the major elements in regional fallout and their spatial and temporal trends, 3) determine if there are unique combinations of elements that are characteristic to the major source areas in the region (source profiles), and 4) use pattern recognition and multivariate statistical techniques (principal component analysis and classical least squares regression) to investigate source apportionment of the fallout to the major source areas. In the winter of 2000-2001, 250 snow samples were collected across the region over a 4-month period and analyzed in triplicate using inductively-coupled plasma mass spectrometry (ICP-MS) and ion chromatography (IC). Thirty-nine (39) trace elements and 9 common ions were positively identified in most samples. The data were analyzed using pattern recognition tools in the software, Pirouette® (Infometrix, Inc.). These results showed a large crustal component (Al, Zn, Mn, Ba, and rare earth elements), an overwhelming contribution from phosphate processing facilities located outside Pocatello in …
Date:
September 1, 2002
Creator:
Abbott, Michael Lehman; Einerson, Jeffrey James; Schuster, Paul & Susong, David D.
Object Type:
Article
System:
The UNT Digital Library
THE IMPACT OF TRACE ADDITIVES ON THE APPARENT SOLUBILITY OF HYDROGEN IN HEAVEY OIL AND RELATED FEEDSTOCKS AT LOW AND HIGH TEMPERATURES
A systematic investigation was conducted to provide an accurate determination of hydrogen solubility in liquid media in temperatures in the range of 25-250 C and pressures in the range of 0.5-8 MPa. Results were obtained by an indirect gas solubility measurement method. The method was intended for use with high-resolution camera. The hydrogen solubility measurements were indirect and were based on pressure changes at constant temperature and measured volumes. Since the volume of the view cell was fixed the volume available for the vapor phase could be determined by measuring the location of the liquid-vapor interface. The interface was located to within the height of one pixel using high-resolution camera, which added {+-} 0.4 ml to the uncertainty of the vapor volume. Liquid-liquid interface locations were measured with equal precision. The accuracy of the method was illustrated through hydrogen solubility measurements in hexadecane and tetralin, which were in close agreement with the values available in the literature. Hydrogen solubilities in Athabasca bitumen vacuum bottoms (ABVB) were reported over a broad range of temperatures (80-250 C) and pressures (0.5-8 MPa).
Date:
September 2002
Creator:
Abedi, J.
Object Type:
Report
System:
The UNT Digital Library
Abilene Philharmonic Playbill: September 14, 2002
Program for an Abilene Philharmonic concert that ran from September 14th to October 26th during the 52nd season. It includes information about the pieces performed, artists and musicians, and advertising from local companies.
Date:
September 2002
Creator:
Abilene Philharmonic
Object Type:
Pamphlet
System:
The Portal to Texas History
Reactive Behavior of K-Basin Spent Nuclear Fuel
The Hanford Spent Nuclear Fuel Project focuses its efforts on determining how to safely move the degraded N-Reactor spent fuel from water-stored basins to a dry storage facility. Based on the laboratory data, the project chose to use a conservative enhancement factor in analyzing the oxidation behavior of the spent metallic fuel. However, there is a need for the project to increase the fuel throughput for the drying treatment process by implementing certain design optimization steps. The study discussed in this paper re-evaluated the previous laboratory data in conjunction with the cold vacuum drying (CVD) process experience and determined whether the built-in level of conservatism could accommodate the potential changes in the process without compromising public and worker safety. An established oxidation reaction-rate constant was used to accurately determine the reactive surface areas of corroded N-Reactor fuel elements. The surface areas calculated for 6 different N-Reactor elements that were stored in the K-West Basin and shipped to Pacific Northwest National Laboratory for drying studies ranges from as low as 0.0018 m2 for a broken element to 8.1 m2 for a highly corroded SNF element 5744U. The SNF element 0309M that was a clean broken piece was used to calibrate the …
Date:
September 30, 2002
Creator:
Abrefah, John; Siciliano, Edward R.; Damschen, Dennis W. & Schlahta, Stephan N.
Object Type:
Report
System:
The UNT Digital Library
Piston-Liner Crevice Geometry Effect on HCCI Combustion by Multi-Zone Analysis
A multi-zone model has been developed that accurately predicts HCCI combustion and emissions. The multizone methodology is based on the observation that turbulence does not play a direct role on HCCI combustion. Instead, chemical kinetics dominates the process, with hotter zones reacting first, and then colder zones reacting in rapid succession. Here, the multi-zone model has been applied to analyze the effect of piston crevice geometry on HCCI combustion and emissions. Three different pistons of varying crevice size were analyzed. Crevice sizes were 0.26, 1.3 and 2.1 mm, while a constant compression ratio was maintained (17:1). The results show that the multi-zone model can predict pressure traces and heat release rates with good accuracy. Combustion efficiency is also predicted with good accuracy for all cases, with a maximum difference of 5% between experimental and numerical results. Carbon monoxide emissions are underpredicted, but the results are better than those obtained in previous publications. The improvement is attributed to the use of a 40-zone model, while previous publications used a 10-zone model. Hydrocarbon emissions are well predicted. For cylinders with wide crevices (1.3 and 2.1 mm), HC emissions do not decrease monotonically as the relative air/fuel ratio ({lambda}) increases. Instead, maximum HC …
Date:
September 4, 2002
Creator:
Aceves, S. M.; Flowers, D. L.; Espinosa-Loza, F.; Martinez-Frias, J.; Dibble, R. W.; Christensen, M. et al.
Object Type:
Article
System:
The UNT Digital Library
University Press (Beaumont, Tex.), Vol. 79, No. 2, Ed. 1 Friday, September 6, 2002
Semiweekly newspaper from Lamar University in Beaumont, Texas that includes local, national, and campus news along with advertising.
Date:
September 6, 2002
Creator:
Achilles, Jenny
Object Type:
Newspaper
System:
The Portal to Texas History
University Press (Beaumont, Tex.), Vol. 79, No. 3, Ed. 1 Wednesday, September 11, 2002
Semiweekly newspaper from Lamar University in Beaumont, Texas that includes local, national, and campus news along with advertising.
Date:
September 11, 2002
Creator:
Achilles, Jenny
Object Type:
Newspaper
System:
The Portal to Texas History
University Press (Beaumont, Tex.), Vol. 79, No. 4, Ed. 1 Friday, September 13, 2002
Semiweekly newspaper from Lamar University in Beaumont, Texas that includes local, national, and campus news along with advertising.
Date:
September 13, 2002
Creator:
Achilles, Jenny
Object Type:
Newspaper
System:
The Portal to Texas History
University Press (Beaumont, Tex.), Vol. 79, No. 5, Ed. 1 Wednesday, September 18, 2002
Semiweekly newspaper from Lamar University in Beaumont, Texas that includes local, national, and campus news along with advertising.
Date:
September 18, 2002
Creator:
Achilles, Jenny
Object Type:
Newspaper
System:
The Portal to Texas History
University Press (Beaumont, Tex.), Vol. 79, No. 6, Ed. 1 Friday, September 20, 2002
Semiweekly newspaper from Lamar University in Beaumont, Texas that includes local, national, and campus news along with advertising.
Date:
September 20, 2002
Creator:
Achilles, Jenny
Object Type:
Newspaper
System:
The Portal to Texas History
University Press (Beaumont, Tex.), Vol. 79, No. 7, Ed. 1 Wednesday, September 25, 2002
Semiweekly newspaper from Lamar University in Beaumont, Texas that includes local, national, and campus news along with advertising.
Date:
September 25, 2002
Creator:
Achilles, Jenny
Object Type:
Newspaper
System:
The Portal to Texas History
Education Vouchers: Constitutional Issues and Cases
This report details the constitutional standards that currently apply to indirect aid programs and summarizes all of the pertinent state and federal court decisions, including the Ohio case that will be heard by the Supreme Court. On September 25, 2001, the Supreme Court agreed to review a case raising the controversial issue of the constitutionality of education vouchers. In Zelman v. Simmons-Harris the Sixth Circuit held Ohio’s Pilot Scholarship Program, which provided up to $2500 to help low-income students in Cleveland’s public schools attend private schools in the city, to violate the establishment of religion clause of the First Amendment.
Date:
September 10, 2002
Creator:
Ackerman, David M.
Object Type:
Report
System:
The UNT Digital Library
International Law and the Preemptive Use of Force Against Iraq
None
Date:
September 23, 2002
Creator:
Ackerman, David M.
Object Type:
Report
System:
The UNT Digital Library
Characterization of Corrosion Products from Static Cell Testing of Al-SNF Forms
Aluminum-based spent nuclear fuel from foreign and domestic research reactors is being consolidated at the Savannah River Site (SRS) for ultimate disposal in the Monitored Geologic Repository. The melt-dilute treatment technology has been developed to consolidate fuel assemblies by a melting/casting process in which depleted uranium is added to reduce enrichment below 20 percent 235-U. The melt-dilute product is essentially a binary uranium-aluminum alloy to which neutron absorber materials may be readily added.
Date:
September 17, 2002
Creator:
Adams, T.
Object Type:
Article
System:
The UNT Digital Library
Off-Gas System Development for the Melt-Dilute Treatment of Aluminum-Based Spent Nuclear Fuel
This effort will provide a technical basis to assure safe and efficient system operation of the melt-dilute process and have general applicability to off-gas streams.
Date:
September 17, 2002
Creator:
Adams, T.
Object Type:
Article
System:
The UNT Digital Library
Treatment of Legacy Materials Using the Melt-Dilute Treatment Technology
This paper reviews the candidate legacy materials and addresses adaptation of the melt-dilute technology to treat DOE legacy waste streams.
Date:
September 17, 2002
Creator:
Adams, T.
Object Type:
Article
System:
The UNT Digital Library
Oral History Interview with Warren S. Adams II, September 18, 2002
The National Museum of the Pacific War presents an oral interview with Warren S. Adams II. The day after the Japanese attacked Pearl Harbor, Adams set aside his law career and joined the Marine Corps. Adams began his Marine career as an instructor, but wished for another assignment. He ended up on Saipan and describes his experiences there.
Date:
September 18, 2002
Creator:
Adams, Warren S.
Object Type:
Sound
System:
The Portal to Texas History
Oral History Interview with Warren S. Adams II, September 18, 2002
The National Museum of the Pacific War presents an oral interview with Warren S. Adams II. The day after the Japanese attacked Pearl Harbor, Adams set aside his law career and joined the Marine Corps. Adams began his Marine career as an instructor, but wished for another assignment. He ended up on Saipan and describes his experiences there.
Date:
September 18, 2002
Creator:
Adams, Warren S.
Object Type:
Text
System:
The Portal to Texas History
Doctoral Recital: 2002-09-16 – Michael Adduci, oboe
Recital presented at the UNT College of Music Recital Hall in partial fulfillment of the Doctor of Musical Arts (DMA) degree.
Date:
September 16, 2002
Creator:
Adduci, Michael
Object Type:
Sound
System:
The UNT Digital Library
Development of Attrition Resistant Iron-Based Fischer-Tropsch Catalysts Progress Report: Number 3
None
Date:
September 1, 2002
Creator:
Adeyiga, Adeyinka A.
Object Type:
Report
System:
The UNT Digital Library
Hard Pion Electroproduction at Medium Energies
Even at moderate energy machines, there is a regime where hard pion electroproduction proceeds by a perturbatively calculable process. The process, they claim, is not the leading twist fragmentation one but rather a higher twist process that produces kinematically isolated pions. Semiexclusive data may teach us more about parton distribution functions of the target and the pion distribution amplitude. In addition, there is a connection to generalized parton distribution calculations of exclusive processes in that the perturbative kernel is the same. The subject of this report is semiexclusive photoproduction of hard pions, and the semiexclusive deep inelastic scattering version of the same, e + p {yields} e + {pi} + X, which we can also write as p(e,e{prime}{prime})X. The authors are interested in pions with large transverse momentum (that is what ''hard'' means), and particularly in pions that are kinematically isolated, rather than pions that are part of a jet. And further, they shall hope to isolate processes that can be calculated perturbatively using Quantum Chromodynamics (QCD).
Date:
September 1, 2002
Creator:
Afanasev, Andrei & Carlson, Carl E.
Object Type:
Article
System:
The UNT Digital Library
Collaboration tools for the global accelerator network: Workshop Report
The concept of a ''Global Accelerator Network'' (GAN) has been put forward as a means for inter-regional collaboration in the operation of internationally constructed and operated frontier accelerator facilities. A workshop was held to allow representatives of the accelerator community and of the collaboratory development community to meet and discuss collaboration tools for the GAN environment. This workshop, called the Collaboration Tools for the Global Accelerator Network (GAN) Workshop, was held on August 26, 2002 at Lawrence Berkeley National Laboratory. The goal was to provide input about collaboration tools in general and to provide a strawman for the GAN collaborative tools environment. The participants at the workshop represented accelerator physicists, high-energy physicists, operations, technology tool developers, and social scientists that study scientific collaboration.
Date:
September 15, 2002
Creator:
Agarwal, Deborah; Olson, Gary & Olson, Judy
Object Type:
Report
System:
The UNT Digital Library
The Eastern Statesman (Wilburton, Okla.), Vol. 81, No. 3, Ed. 1 Monday, September 9, 2002
Biweekly student newspaper from Eastern Oklahoma State College in Wilburton, Oklahoma that includes local, state, and campus news along with advertising.
Date:
September 9, 2002
Creator:
Agent, Alicia
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Eastern Statesman (Wilburton, Okla.), Vol. 81, No. 4, Ed. 1 Monday, September 23, 2002
Biweekly student newspaper from Eastern Oklahoma State College in Wilburton, Oklahoma that includes local, state, and campus news along with advertising.
Date:
September 23, 2002
Creator:
Agent, Alicia
Object Type:
Newspaper
System:
The Gateway to Oklahoma History