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The Clifton Record (Clifton, Tex.), Vol. 107, No. 83, Ed. 1 Wednesday, October 16, 2002
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
October 16, 2002
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
Hondo Anvil Herald (Hondo, Tex.), Vol. 116, No. 20, Ed. 1 Thursday, May 16, 2002
Weekly newspaper from Hondo, Texas that includes local, state, and national news along with extensive advertising.
Date:
May 16, 2002
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Seminole Sentinel (Seminole, Tex.), Vol. 96, No. 1, Ed. 1 Wednesday, October 16, 2002
Semi-weekly newspaper from Seminole, Texas that includes local, state, and national news along with extensive advertising.
Date:
October 16, 2002
Creator:
Fisher, David
Object Type:
Newspaper
System:
The Portal to Texas History
Spawning Success of Hatchery Spring Chinook Salmon Outplanted as Adults in the Clearwater River Basin, Idaho, 2001.
The study described in this report evaluated spawning distribution, overlap with naturally-arriving spawners, and pre-spawning mortality of spring chinook salmon, Oncorhynchus tshawytscha, outplanted as adults in the Clearwater River Subbasin in 2001. Returns of spring chinook salmon to Snake River Basin hatcheries and acclimation facilities in 2001 exceeded needs for hatchery production goals in Idaho. Consequently, management agencies including the U.S. Fish and Wildlife Service (FWS), Idaho Department of Fish and Game (IDFG) and Nez Perce Tribe (NPT) agreed to outplant chinook salmon adults as an adaptive management strategy for using hatchery adults. Adult outplants were made in streams or stream sections that have been typically underseeded with spawners. This strategy anticipated that outplanted hatchery chinook salmon would spawn successfully near the areas where they were planted, and would increase natural production. Outplanting of adult spring chinook salmon from hatcheries is likely to be proposed in years when run sizes are similar to those of the 2001 run. Careful monitoring of results from this year's outplanting can be used to guide decisions and methods for future adult outplanting. Numbers of spring chinook salmon outplanted was based on hatchery run size, hatchery needs, and available spawning habitat. Hatcheries involved in outplanting …
Date:
April 16, 2002
Creator:
Cramer, Steven P.; Ackerman, Nichlaus & Witty, Kenneth L.
Object Type:
Report
System:
The UNT Digital Library
Wilson lines and symmetry breaking on orbifolds
Gauge symmetry breaking by boundary conditions on a manifold is known to be equivalent to Wilson-line breaking through a background gauge field, and is therefore spontaneous. These equivalent pictures are related by a non-periodic gauge transformation. However, we find that boundary condition gauge symmetry breaking on orbifolds is explicit; there is no gauge where all the breaking can be attributed to a background gauge field. In the case of a five-dimensional SU(5) grand unified theory on S{sup 1} = Z{sub 2}, the vacuum with gauge symmetry broken to SU(3) x SU(2) x U(1) and that with SU(5) preserved are completely disconnected: there is no physical process which causes tunneling between the two. This allows a certain localized explicit breaking of SU(5) on one of the orbifold fixed points in the theory with SU(5) breaking. Split multiplets on this fixed point are shown not to induce violations of unitarity in scattering amplitudes.
Date:
August 16, 2002
Creator:
Hall, Lawrence J.; Murayama, Hitoshi & Nomura, Yasunori
Object Type:
Article
System:
The UNT Digital Library
Pressure dependence of donor excitation spectra in AlSb
We have investigated the behavior of ground to bound excited-state electronic transitions of Se and Te donors in AlSb as a function of hydrostatic pressure. Using broadband far-infrared Fourier transform spectroscopy, we observe qualitatively different behaviors of the electronic transition energies of the two donors. While the pressure derivative of the Te transition energy is small and constant, as might be expected for a shallow donor, the pressure derivatives of the Se transition energies are quadratic and large at low pressures, indicating that Se is actually a deep donor. In addition, at pressures between 30 and 50 kbar, we observe evidence of an anti-crossing between one of the selenium electronic transitions and a two-phonon mode.
Date:
January 16, 2002
Creator:
Hsu, L.; McCluskey, M. D. & Haller, E. E.
Object Type:
Article
System:
The UNT Digital Library
ALTERNATE HIGH EFFICIENCY PARTICULATE AIR (HEPA) FILTRATION SYSTEM
In Phase IIA of this project, CeraMem has further developed and scaled up ceramic HEPA filters that are appropriate for use on filtration of vent gas from HLW tanks at DOE sites around the country. This work included procuring recrystallized SiC monoliths, developing membrane and cement materials, and defining a manufacturing process for the production of prototype full sizes HEPA filters. CeraMem has demonstrated that prototype full size filters can be manufactured by producing 9 full size filters that passed DOP aerosol testing at the Oak Ridge Filter Test Facility. One of these filters was supplied to the Savannah River Technical Center (SRTC) for process tests using simulated HLW tank waste. SRTC has reported that the filter was regenerable (with some increase in pressure drop) and that the filter retained its HEPA retention capability. CeraMem has also developed a Regenerable HEPA Filter System (RHFS) design and acceptance test plan that was reviewed by DOE personnel. The design and acceptance test plan form the basis of the system proposal for follow-on work in Phase IIB of this project.
Date:
August 16, 2002
Creator:
Bishop, Bruce; Goldsmith, Robert; Nielsen, Karsten & Paquette, Phillip
Object Type:
Report
System:
The UNT Digital Library
Uncertainty Analysis for the Southern TCE Plume in the C-Area Groundwater Operable Unit
This report documents an uncertainty analysis on a local groundwater flow and transport model for the C-Area Reactor Groundwater Operable Unit. The work is a continuation of the recently completed regional groundwater flow model for C Area (Bills et al. 2000) and the local flow and transport model for the southern C-Area plumes (Fogle and Brewer, 2001). The local flow and transport model is a representation of groundwater flow and contaminant migration through the Upper Three Runs aquifer, southwest to Fourmile Branch and Castor Creek. The uncertainty analysis is focused on total TCE flux to the streams, as well as maximum concentration discharge locations.
Date:
April 16, 2002
Creator:
Brewer, K.E.
Object Type:
Report
System:
The UNT Digital Library
Final Technical Report, Outstanding Junior Investigator Award for De-fg02-94er40869
This report summarizes the research of the Principal Investigator, his postdoctoral research associates, and his students during the period of the award. The majority of the work concerns the behavior of hadrons containing strange, charm, bottom and top quarks, with a particular focus on the extraction of Cabibbo--Kobayashi--Maskawa matrix elements from experiments performed on such systems.
Date:
May 16, 2002
Creator:
Falk, Adam F.
Object Type:
Report
System:
The UNT Digital Library
Proton polarization in neutral pion photo-production.
The authors present measurements of recoil proton polarization for {sup 1}H({rvec {gamma}},{rvec p}){pi}{sup 0} in and above the resonance region. These are the first data in this reaction for polarization transfer with circularly polarized photons. The results are compared to phase shift analyses and quark model calculations.
Date:
July 16, 2002
Creator:
Wijesooriya, K. & Collaboration, Jefferson Lab Hall A
Object Type:
Article
System:
The UNT Digital Library
Seismic low-frequency effects from oil-saturated reservoir zones
We consider the frequency dependence of seismic reflections from a thin (compared to the dominant wavelength), fluid saturated reservoir for the cases of oil and water saturation. Reflections from a thin, water or oil-saturated layer have increased amplitude and delayed travel time at low frequencies if compared with reflections from a gas-saturated layer. This effect was observed for both ultrasonic lab data and seismic field data. One set of field data revealed high correlation of low frequency processed image for two different production horizons represented by fractured shale and sandstone. Another set was processed for the purpose of contouring of oil/water contact, and reveal very good correlation with available well data. The frequency dependent amplitude and phase reflection properties can be used for detecting and monitoring thin liquid saturated layers.
Date:
April 16, 2002
Creator:
Goloshubin, Gennady M.; Korneev, Valeri A. & Vingalov, Vjacheslav M.
Object Type:
Article
System:
The UNT Digital Library
Metal dusting research at Argonne National Laboratory.
The deposition of carbon from carbonaceous gaseous environments is prevalent in many chemical and petrochemical processes such as reforming systems, syngas production systems, and iron reduction plants. One of the major consequences of carbon deposition is the degradation of structural materials by a phenomenon known as ''metal dusting.'' There are two major issues of importance in metal dusting. First is formation of carbon and subsequent deposition of carbon on metallic materials. Second is the initiation of metal dusting degradation of the alloy. Details are presented on a research program that is underway at Argonne National Laboratory to study the metal dusting phenomenon from a fundamental scientific base involving laboratory research in simulated process conditions and field testing of materials in actual process environments. The project has participation from the U.S. chemical industry, alloy manufacturers, and the Materials Technology Institute, which serves the chemical process industry.
Date:
September 16, 2002
Creator:
Natesan, K.; Zeng, Z.; Maroni, V. A.; Soppet, W. K. & Rink, D. L.
Object Type:
Article
System:
The UNT Digital Library
FISCAL YEAR 2001 ANNUAL REPORT ON THE UNIVERSITY PROGRAMS OF THE ADVANCED ACCELERATOR APPLICATIONS PROGRAM.
The Advanced Accelerator Applications (AAA) Program was initiated in fiscal year 2001 (FY-01) by the U.S. Congress, the U.S. Department of Energy (DOE), and the Los Alamos National Laboratory (LANL) in partnership with other national laboratories. The AAA Project and the R&D for its underlying science and technology will require a large cadre of educated scientists and trained technicians in the future. In addition, other applications of nuclear science and engineering (e.g., proliferation monitoring and defense, nuclear medicine, safety regulation, industrial processes, and many others) require increased academic and national infrastructure and student populations. Thus, the DOE AAA Program Office has begun a multi-year program to involve university faculty and students in various phases of the Project to support the infrastructure requirements of nuclear energy, science and technology fields as well as the special needs of the DOE transmutation program. Herein I summarize the goals and accomplishments of the university programs that have supported the AAA Project during FY-01, including the involvement of more than eighty students.
Date:
February 16, 2002
Creator:
BELLER, DENIS E
Object Type:
Report
System:
The UNT Digital Library
Measurement Issues for Energy Efficient Commercial Buildings: Productivity and Performance Uncertainties
In previous reports, we have identified two potentially important issues, solutions to which would increase the attractiveness of DOE-developed technologies in commercial buildings energy systems. One issue concerns the fact that in addition to saving energy, many new technologies offer non-energy benefits that contribute to building productivity (firm profitability). The second issue is that new technologies are typically unproven in the eyes of decision makers and must bear risk premiums that offset cost advantages resulting from laboratory calculations. Even though a compelling case can be made for the importance of these issues, for building decision makers to incorporate them in business decisions and for DOE to use them in R&D program planning there must be robust empirical evidence of their existence and size. This paper investigates how such measurements could be made and offers recommendations as to preferred options. There is currently little systematic information on either of these concepts in the literature. Of the two there is somewhat more information on non-energy benefits, but little as regards office buildings. Office building productivity impacts can be observed casually, but must be estimated statistically, because buildings have many interacting attributes and observations based on direct behavior can easily confuse the process …
Date:
May 16, 2002
Creator:
Jones, D.W.
Object Type:
Report
System:
The UNT Digital Library
Raf-1-induced growth arrest in human mammary epithelial cells is p16-independent and is overcome in immortal cells during conversion
None
Date:
January 16, 2002
Creator:
Olsen, Catherine L.; Gardie, Betty; Yaswen, Paul & Stampfer, Martha R.
Object Type:
Article
System:
The UNT Digital Library
Long range climate effect of carbon dioxide and sulfate aerosols
The program has led to better climate model components, has developed new and more efficient methods of solving climate model equations and has taken advantage of the new computing technologies thus providing more reliable estimates of potential climate change. The CHAMMP sponsored and the NCAR-CSM (Climate System Model) are complimentary efforts and under this leadership are developing state-of-the-art, high resolution, computationally efficient components thus providing a more realistic simulation.
Date:
September 16, 2002
Creator:
Washington, Warren M. & Meehl, Gerald A.
Object Type:
Report
System:
The UNT Digital Library
Liquid-film assisted formation of alumina/niobium interfaces
Alumina has been joined at 1400 degrees C using niobium-based interlayers. Two different joining approaches were compared: solid-state diffusion bonding using a niobium foil as an interlayer, and liquid-film assisted bonding using a multilayer copper/niobium/copper interlayer. In both cases, a 127-(mu)m thick niobium foil was used; =1.4-(mu)m or =3-(mu)m thick copper films flanked the niobium. Room-temperature four-point bend tests showed that the introduction of a copper film had a significant beneficial effect on the average strength and the strength distribution. Experiments using sapphire substrates indicated that during bonding the initially continuous copper film evolved into isolated copper-rich droplets/particles at the sapphire/interlayer interface, and extensive regions of direct bonding between sapphire and niobium. Film breakup appeared to initiate at either niobium grain boundary ridges, or at asperities or irregularities on the niobium surface that caused localized contact with the sapphire.
Date:
June 16, 2002
Creator:
Sugar, Joshua D.; McKeown, Joseph T.; Marks, Robert A. & Glaeser, Andreas M.
Object Type:
Article
System:
The UNT Digital Library
Effects of dry fractures on matrix diffusion in unsaturated fractured rocks
Matrix diffusion has been recognized as an important mechanism affecting solute transport through unsaturated fractured rock, where a significant fraction of the fracture network remains relatively dry and inactive in conducting liquid flow. This simulation study shows that dry fractures act as strong diffusion barriers to solute transport when such fractures divide the matrix into discrete blocks. Where fracture surface roughness causes some regions of direct contact between matrix blocks separated by a dry fracture, the contacts of the matrix blocks provide conduits for liquid flow and molecular diffusion across dry fractures. Simulation results indicate that the presence of dry fractures and their discontinuities considerably affect solute transport in unsaturated fractured rocks.
Date:
January 16, 2002
Creator:
Seol, Yongkoo; Liu, Hui Hai & Bodvarsson, Gudmundur S.
Object Type:
Report
System:
The UNT Digital Library
Atmospheric Dispersion Modeling for Radiological Accident Analyses at LANL Nuclear Facilities.
None
Date:
February 16, 2002
Creator:
Heindel, George D.
Object Type:
Report
System:
The UNT Digital Library
Corrective Action Investigation Plan for Corrective Action Unit 410: Waste Disposal Trenches, Tonopah Test Range, Nevada, Revision 0 (includes ROTCs 1, 2, and 3)
This Corrective Action Investigation Plan contains the U.S. Department of Energy, National Nuclear Security Administration Nevada Operations Office's approach to collect the data necessary to evaluate corrective action alternatives appropriate for the closure of Corrective Action Unit (CAU) 410 under the Federal Facility Agreement and Consent Order. Corrective Action Unit 410 is located on the Tonopah Test Range (TTR), which is included in the Nevada Test and Training Range (formerly the Nellis Air Force Range) approximately 140 miles northwest of Las Vegas, Nevada. This CAU is comprised of five Corrective Action Sites (CASs): TA-19-002-TAB2, Debris Mound; TA-21-003-TANL, Disposal Trench; TA-21-002-TAAL, Disposal Trench; 09-21-001-TA09, Disposal Trenches; 03-19-001, Waste Disposal Site. This CAU is being investigated because contaminants may be present in concentrations that could potentially pose a threat to human health and/or the environment, and waste may have been disposed of with out appropriate controls. Four out of five of these CASs are the result of weapons testing and disposal activities at the TTR, and they are grouped together for site closure based on the similarity of the sites (waste disposal sites and trenches). The fifth CAS, CAS 03-19-001, is a hydrocarbon spill related to activities in the area. This site …
Date:
July 16, 2002
Creator:
United States. National Nuclear Security Administration. Nevada Operations Office.
Object Type:
Report
System:
The UNT Digital Library
Activities of Human Gene Nomenclature Committee
The objective of this project, shared between NIH and DOE, has been and remains to enable the medical genetics communities to use common names for genes that are discovered by different gene hunting groups, in different species. This effort provides consistent gene nomenclature and approved gene symbols to the community at large. This contributes to a uniform and consistent understanding of genomes, particularly the human as well as functional genomics based on comparisons between homologous genes in related species (human and mice).
Date:
July 16, 2002
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Assessing non-uniqueness: An algebraic approach
Geophysical inverse problems are endowed with a rich mathematical structure. When discretized, most differential and integral equations of interest are algebraic (polynomial) in form. Techniques from algebraic geometry and computational algebra provide a means to address questions of existence and uniqueness for both linear and non-linear inverse problem. In a sense, the methods extend ideas which have proven fruitful in treating linear inverse problems.
Date:
September 16, 2002
Creator:
Vasco, Don W.
Object Type:
Article
System:
The UNT Digital Library
Fabrication techniques for septum magnets at the APS.
The design, construction, and installation of pulsed septum magnets for particle accelerators presents many challenges for the magnet engineer. Issues associated with magnet core structure design, component alignment, weldment design, and electrical insulation choices are among those requiring careful attention. The designs of the six septum magnets required for the APS facility have evolved since operation began in 1996. Improvements in the designs have provided better injection/extraction performance parameters and extended the machine reliability to meet the requirements of a world-class, third-generation synchrotron radiation facility. Details of the techniques used to address issues involved in producing septum magnets at the APS are described here to aid magnet engineers in the fabrication of future septum magnets.
Date:
September 16, 2002
Creator:
Jaski, M.; Thompson, K.; Kim, S.; Friedsam, H.; Toter, W. & Humbert, J.
Object Type:
Article
System:
The UNT Digital Library
Results of the SNS front end commissioning at Berkeley Lab
The Front-End Systems (FES) for the Spallation Neutron Source (SNS) project comprise an rf-driven H{sup -} ion source, an electrostatic 2-lens LEBT, a 2.5 MeV RFQ, followed by a 14-quadrupole, 4-rebuncher MEBT including traveling-wave fast choppers. The nominal 2.5 MeV H{sup -} beam has a current of 38 mA at a repetition rate of 60 Hz and 1 ms pulse length, for a macro duty-factor of 6%, and is chopped at a rate of approximately 1 MHz with a mini duty-factor of 68%. The normalized rms beam emittance at the MEBT exit, matching the first tank of a 402.5 MHz Alvarez linac, is measured to be approximately 0.3 {pi} mm mrad. Diagnostic elements include wire scanners, BPMs, fast current monitors, a slit-harp emittance device and RFQ field monitoring probes. The results of the beam commissioning and the operation of the RFQ and diagnostic instrumentation are reported. The entire FES was shut down at LBNL at the end of May 2002 and will be recommissioned at ORNL prior to installation of the drift-tube linac.
Date:
August 16, 2002
Creator:
Ratti, A.; Ayers, J. J.; Doolittle, L.; Greer, J. B.; Keller, R.; Lewis, S. et al.
Object Type:
Article
System:
The UNT Digital Library