Degree Department

1,928 Matching Results

Results open in a new window/tab.

B physics with the CDF Run II upgrade (open access)

B physics with the CDF Run II upgrade

During the Run 1 data taking period, from 1992 through 1995, CDF has acquired 110 pb{sup {minus}1} of p{anti p} collisions at a center of mass energy of 1,800 GeV. This data has provided many results on B physics, and provides a basis for extrapolating to Run 2, which is scheduled to start in 1999 after major upgrades to both the accelerator and detector. The authors present herein a summary of Run 1 results relevant to an analysis of the CP asymmetry in B {yields} J/{psi}K{sub s}, the CDF upgrade plans for Run 2, and some of the main B physics goals related to the exploration of the origin of CP violation.
Date: January 1, 1996
Creator: DeJongh, F.
Object Type: Article
System: The UNT Digital Library
Basis for Interim Operation (BIO) for the Rework Unit (RW), Du Pont Water (DW) Plant, Moderator Processing Facility (MPF), and Technical Purification Facility (TPF) (open access)

Basis for Interim Operation (BIO) for the Rework Unit (RW), Du Pont Water (DW) Plant, Moderator Processing Facility (MPF), and Technical Purification Facility (TPF)

The mission of the Heavy Water portion of D Area (or 400 Area) at SRS is to purify the site inventory of heavy water for storage in the Reactor Areas for future DOE missions.
Date: January 1996
Creator: Horne, R. E.
Object Type: Report
System: The UNT Digital Library
Baytown Briefs (Baytown, Tex.), Vol. 44, No. 01, Ed. 1 Monday, January 1, 1996 (open access)

Baytown Briefs (Baytown, Tex.), Vol. 44, No. 01, Ed. 1 Monday, January 1, 1996

Newspaper from Baytown, Texas published by Exxon Company U.S.A. that includes news and information of interest to current and former employees of the Baytown facilities.
Date: January 1, 1996
Creator: Pfennig, Glena
Object Type: Newspaper
System: The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 74, No. 53, Ed. 1 Monday, January 1, 1996 (open access)

The Baytown Sun (Baytown, Tex.), Vol. 74, No. 53, Ed. 1 Monday, January 1, 1996

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date: January 1, 1996
Creator: Dobbs, Gary
Object Type: Newspaper
System: The Portal to Texas History
Beam-beam effects and generalized luminosity (open access)

Beam-beam effects and generalized luminosity

The assumption is made that before an NLC is approved, a prototype will be necessary that demonstrates the feasibility of a general purpose linear collider capable of {rvec e}{sup {+-}}{rvec e}{sup {+-}}, {rvec {gamma}}{rvec e} and {rvec {gamma}}{rvec {gamma}} incident channels. At an upgraded SLC, such channels could provide new physics over a range of energies upwards of a few GeV. Effects that limit the luminosity of a GLC are discussed together with their possible mitigations. The expected luminosities in the different channels are then predicted in a consistent way for {radical}s{sub ee} = 0.5 TeV.
Date: January 1, 1996
Creator: Spencer, J.E.
Object Type: Report
System: The UNT Digital Library
Bed material agglomeration during fluidized bed combustion. Final report (open access)

Bed material agglomeration during fluidized bed combustion. Final report

The purpose of this project is to determine the physical and chemical reactions which lead to the undesired agglomeration of bed material during fluidized bed combustion of coal and to relate these reactions to specific causes. A survey of agglomeration and deposit formation in industrial fluidized bed combustors (FBCs) indicate that at least five boilers were experiencing some form of bed material agglomeration. Deposit formation was reported at nine sites with deposits most commonly at coal feed locations and in cyclones. Other deposit locations included side walls and return loops. Three general types of mineralogic reactions were observed to occur in the agglomerates and deposits. Although alkalies may play a role with some {open_quotes}high alkali{close_quotes} lignites, we found agglomeration was initiated due to fluxing reactions between iron (II) from pyrites and aluminosilicates from clays. This is indicated by the high amounts of iron, silica, and alumina in the agglomerates and the mineralogy of the agglomerates. Agglomeration likely originated in the dense phase of the FBC bed within the volatile plume which forms when coal is introduced to the boiler. Secondary mineral reactions appear to occur after the agglomerates have formed and tend to strengthen the agglomerates. When calcium is present …
Date: January 1, 1996
Creator: Brown, R.C.; Dawson, M.R. & Smeenk, J.L.
Object Type: Report
System: The UNT Digital Library
Bench-scale demonstration of hot-gas desulfurization technology. Quarterly technical progress report, April 1, 1995--June 30, 1995 (open access)

Bench-scale demonstration of hot-gas desulfurization technology. Quarterly technical progress report, April 1, 1995--June 30, 1995

The U.S. Department of Energy (DOE), Morgantown Energy Technology Center (METC), is sponsoring research in advanced methods for controlling contaminants in hot coal gasifier gas (coal gas) streams of integrated gasification combined-cycle (IGCC) power systems. The programs focus on hot-gas particulate removal and desulfurization technologies that match or nearly match the temperatures and pressures of the gasifier, cleanup system, and power generator. This work has focused on the utilization of Zinc Titanate sorbent to reduce the hydrogen sulfide levels in coal gas. The control of sulfur dioxide is also discussed.
Date: January 1, 1996
Creator: Dorchak, Thomas P.
Object Type: Report
System: The UNT Digital Library
BEST: Biochemical Engineering Simulation Technology (open access)

BEST: Biochemical Engineering Simulation Technology

The idea of developing a process simulator that can describe biochemical engineering (a relatively new technology area) was formulated at the National Renewable Energy Laboratory (NREL) during the late 1980s. The initial plan was to build a consortium of industrial and U.S. Department of Energy (DOE) partners to enhance a commercial simulator with biochemical unit operations. DOE supported this effort; however, before the consortium was established, the process simulator industry changed considerably. Work on the first phase of implementing various fermentation reactors into the chemical process simulator, ASPEN/SP-BEST, is complete. This report will focus on those developments. Simulation Sciences, Inc. (SimSci) no longer supports ASPEN/SP, and Aspen Technology, Inc. (AspenTech) has developed an add-on to its ASPEN PLUS (also called BioProcess Simulator [BPS]). This report will also explain the similarities and differences between BEST and BPS. ASPEN, developed by the Massachusetts Institute of Technology for DOE in the late 1970s, is still the state-of-the-art chemical process simulator. It was selected as the only simulator with the potential to be easily expanded into the biochemical area. ASPEN/SP, commercially sold by SimSci, was selected for the BEST work. SimSci completed work on batch, fed-batch, and continuous fermentation reactors in 1993, just as …
Date: January 1, 1996
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Biofuels: 1995 project summaries (open access)

Biofuels: 1995 project summaries

Domestic transportation fuels are derived primarily from petroleum and account for about two-thirds of the petroleum consumption in the United States. In 1994, more than 40% of our petroleum was imported. That percentage is likely to increase, as the Middle East has about 75% of the world`s oil reserves, but the United States has only about 5%. Because we rely so heavily on oil (and because we currently have no suitable substitutes for petroleum-based transportation fuels), we are strategically and economically vulnerable to disruptions in the fuel supply. Additionally, we must consider the effects of petroleum use on the environment. The Biofuels Systems Division (BSD) is part of the U.S. Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EE). The day-to-day research activities, which address these issues, are managed by the National Renewable Energy Laboratory in Golden, Colorado, and Oak Ridge National Laboratory in Oak Ridge, Tennessee. BSD focuses its research on biofuels-liquid and gaseous fuels made from renewable domestic crops-and aggressively pursues new methods for domestically producing, recovering, and converting the feedstocks to produce the fuels economically. The biomass resources include forage grasses, oil seeds, short-rotation woody crops, agricultural and forestry residues, algae, and certain industrial …
Date: January 1996
Creator: unknown
Object Type: Report
System: The UNT Digital Library
[Black Music and the Civil Rights Movement Concert audio tape] transcript

[Black Music and the Civil Rights Movement Concert audio tape]

Audio cassette from The Black Academy of Arts and Letters recorded during the Black Music and the Civil Rights Movement Concert of 1996. The tape includes two well recorded tracks of audio that feature gospel singers, speakers, and a large choir.
Date: January 1996
Creator: unknown
Object Type: Sound
System: The UNT Digital Library
Bonneville Power Administration, Lower Columbia Region: Noxious Weed Management, 1996 Annual Report. (open access)

Bonneville Power Administration, Lower Columbia Region: Noxious Weed Management, 1996 Annual Report.

During the 1996 season ODA executed the contract between BPA and ODA. Execution of this contract included the following activities: Survey for target noxious weeds, such as Gorse; collection and redistribution of biological control agents, for example, Apion seed weevils for Scotch broom, bioagents for diffuse and spotted knapweed, Gorse spider mite, and gall fly releases for control of Canada thistle and bull thistle; and control of isolated infestations of Gorse on BPA rights-of-way. Training was provided for line crews at the Chemawa, Alevy and North Bend districts. The purpose of the program is to assist BPA in the integrated prevention and control of noxious weed species on BPA transmission line maintenance right-of-ways.
Date: January 1996
Creator: United States. Bonneville Power Administration. & Program, Oregon Department of Agriculture Noxious Weed Control
Object Type: Report
System: The UNT Digital Library
Brilliance and flux reduction in imperfect inclined crystals (open access)

Brilliance and flux reduction in imperfect inclined crystals

The inclined crystal geometry has been suggested as a method of reducing the surface absorbed power density of high-heat-load monochromators for third-generation synchrotron radiation sources. Computer simulations have shown that if the crystals are perfectly aligned and have no strains then the diffraction properties of a pair of inclined crystals are very similar to a pair of conventional flat crystals with only subtle effects differentiating the two configurations. However, if the crystals are strained, these subtle differences in the behavior of inclined crystals can result in large beam divergences causing brilliance and flux losses. This manuscript elaborates on these issues and estimates potential brilliance and flux losses from strained inclined crystals at the APS.
Date: January 1, 1996
Creator: Lee, W. K.; Blasdell, R. C.; Fernandez, P. B.; Macrander, A. T. & Mills, D. M.
Object Type: Article
System: The UNT Digital Library
Calculating scattering amplitudes efficiently (open access)

Calculating scattering amplitudes efficiently

We review techniques for more efficient computation of perturbative scattering amplitudes in gauge theory, in particular tree and one- loop multi-parton amplitudes in QCD. We emphasize the advantages of (1) using color and helicity information to decompose amplitudes into smaller gauge-invariant pieces, and (2) exploiting the analytic properties of these pieces, namely their cuts and poles. Other useful tools include recursion relations, special gauges and supersymmetric rearrangements. 46 refs., 11 figs.
Date: January 1996
Creator: Dixon, L.
Object Type: Article
System: The UNT Digital Library
Calibration and performance testing of the IAEA Aquila Active Well Coincidence Counter (Unit 1) (open access)

Calibration and performance testing of the IAEA Aquila Active Well Coincidence Counter (Unit 1)

An Active Well Coincidence Counter (AWCC) and a portable shift register (PSR-B) produced by Aquila Technologies Group, Inc., have been tested and cross-calibrated with existing AWCCs used by the International Atomic Energy Agency (IAEA). This report summarizes the results of these tests and the cross-calibration of the detector. In addition, updated tables summarizing the cross-calibration of existing AWCCs and AmLi sources are also included. Using the Aquila PSR-B with existing IAEA software requires secondary software also supplied by Aquila to set up the PSR-B with the appropriate measurement parameters.
Date: January 1, 1996
Creator: Menlove, H.O..; Siebelist, R. & Wenz, T.R.
Object Type: Report
System: The UNT Digital Library
Calibration of a Solar Absolute Cavity Radiometer with Traceability to the World Radiometric Reference (open access)

Calibration of a Solar Absolute Cavity Radiometer with Traceability to the World Radiometric Reference

This report describes the present method of establishing traceability of absolute cavity radiometers to the World Radiometric Reference (WRR) through the process employed in the International Pyrheliometer Comparisons (IPC). This method derives the WRR reduction factor for each of the participating cavity radiometers. An alternative method is proposed, described, and evaluated as a way to reduce the uncertainty in the comparison process. The two methods are compared using a sample of data from the recent IPC-VIII conducted from September 25th to October 13th, 1995 at the World Radiation Center in Davos, Switzerland. A description of absolute cavity radiometers is also included, using a PMO-6 as an example of active cavity radiometers, and a HF as an example of passive cavity radiometers.
Date: January 1, 1996
Creator: Reda, I.
Object Type: Report
System: The UNT Digital Library
Calibration technique for the neutron surface moisture measurement system (open access)

Calibration technique for the neutron surface moisture measurement system

A technique for calibrating the response of a surface neutron moisture measurement probe to material moisture concentration has been devised. Tests to ensure that the probe will function in the expected in-tank operating environment are also outlined.
Date: January 1, 1996
Creator: Watson, W. T. & Shreve, D. C.
Object Type: Report
System: The UNT Digital Library
Capacitive deionization of NH{sub 4}CIO{sub 4} solutions with carbon aerogel electrodes. Revision 1 (open access)

Capacitive deionization of NH{sub 4}CIO{sub 4} solutions with carbon aerogel electrodes. Revision 1

A process for capacitive deionization of water with a stack of carbon aerogel electrodes was developed. Unlike ion exchange, one of the more conventional deionization processes, no chemicals are required for regeneration of the system; electricity is used instead. An aqueous solution of NH{sub 4}ClO{sub 4} is pumped through the electrochemical cell. After polarization, NH{sub 4}{sup +} and ClO{sub 4}{sup -} ions are removed from the water by the imposed electric field and trapped in the extensive cathodic and anodic double layers. Thsi process produces one stream of purified water and a second stream of concentrate. Effects of cell voltage, salt concentration, and cycling on electrosorption capacity were studied and results reported.
Date: January 1, 1996
Creator: Farmer, J. C.; Fix, D. V.; Mack, G. V.; Pekala, R. W. & Poco, J. F.
Object Type: Article
System: The UNT Digital Library
Capacity fade in thin-film lithium-V{sub 2}O{sub 5} cells (open access)

Capacity fade in thin-film lithium-V{sub 2}O{sub 5} cells

Capacity fade with cycling of thin-film rechargeable Li/Lipon/V{sub 2}O{sub 5} cells, formed as electrochromic mirrors with ITO current collectors, has been studied by optical and impedance spectroscopy and extended cycling experiments. An irreversible decrease in the reflectivity observed in cells cycled between 3.6 to 1.5 V was attributed to a roughening of the Li surface at the Li-Lipon interface. Although the consequent loss of contact area might be the source of increasing cell resistance responsible for the capacity fade, this possibility was ruled out because of the large variability observed in the cycling performance of cells with different cathodes and the constancy of the reflectivity when the cutoff voltage was increased to 2.5 V. It was concluded from the analysis of impedance data that a decrease in Li{sup +} ion diffusivity in the cathode and the cathode-electrolyte interface with cycling is the major cause of capacity fade.
Date: January 1, 1996
Creator: Kwak, B.S.; Bates, J.B. & Hart, F.X.
Object Type: Article
System: The UNT Digital Library
Capillary flow solder wettability test (open access)

Capillary flow solder wettability test

A test procedure was developed to assess the capillary flow wettability of solders inside of a confined geometry. The test geometry was comprised of two parallel plates with a controlled gap of constant thickness (0.008 cm, 0.018 cm, 0.025 cm, and 0.038 cm). Capillary flow was assessed by: (1) the meniscus or capillary rise of the solder within the gap, (2) the extent of void formation in the gap, and (3) the time-dependence of the risen solder film. Tests were performed with the lead-free solders.
Date: January 1, 1996
Creator: Vianco, P. T. & Rejent, J. A.
Object Type: Article
System: The UNT Digital Library
Carbon Dioxide Information Analysis Center and World Data Center-A for atmospheric trace gases: Fiscal year 1995 annual report (open access)

Carbon Dioxide Information Analysis Center and World Data Center-A for atmospheric trace gases: Fiscal year 1995 annual report

Fiscal year 1995 was both a very productive year for the Carbon Dioxide Information Analysis Center and a year of significant change. This document presents information about the most notable accomplishments made during the year. Topics include: high-lights; statistics; future plans; publications, presentations, and awards; and change in organization and staff.
Date: January 1996
Creator: Burtis, M. D.; Cushman, R. M.; Boden, T. A.; Jones, S. B.; Nelson, T. & Stoss, F. W.
Object Type: Report
System: The UNT Digital Library
Catch and Effort from Hawaii's Longline Fishery Summarized by Quarters and Five Degree Squares (open access)

Catch and Effort from Hawaii's Longline Fishery Summarized by Quarters and Five Degree Squares

This report provides quarterly and yearly summaries of Hawaii's pelagic longline catch (numbers of fish) and effort (hooks) reported by five-degree (latitude by longitude) squares based on the National Marine Fisheries Service longline logbook program. Species summarized include albacore, bigeye tuna, yellowfin tuna, striped marlin, blue marlin, black marlin, swordfish, mahimahi, and wahoo.
Date: January 1996
Creator: Curran, Daniel S.; Boggs, Christofer H. & He, Xi
Object Type: Report
System: The UNT Digital Library
CEA Horse Newsletter, January 1996 (open access)

CEA Horse Newsletter, January 1996

Newsletter issued by the Texas Agricultural Extension Service related to news, events and other updates in the organization related to raising and managing horses, as well as other relevant topics of interest to county extension agents.
Date: January 1996
Creator: Texas Agricultural Extension Service
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Characterization of Hanford N Reactor spent fuel and K Basin sludges (open access)

Characterization of Hanford N Reactor spent fuel and K Basin sludges

Characterization is in progress for the N Reactor fuel stored in the Hanford K Basins. These activities` support the strategy for removal of fuel from the basins and storage of fuel in a dry condition at an area remote from the Columbia River. This strategy currently consists of placing fuel in a Multi-Canister Overpack (MCO), drying the fuel while it resides in the MCO and conditioning some portion of the fuel to reduce its chemical reactivity. Characterization includes the examination of fuel, canisters, and associated sludge. It consists firstly of in-basin activities such as visual examination, sludge depth measurements, and sampling of gas and liquid in canisters. Secondly characterization ecompasses the examination of samples of fuel and sludge which have been removed from the basins and shipped to laboratories. This paper presents observations made in the basins during the most recent attempts to ship samples from the basins and data obtained in the laboratory hotcells.
Date: January 1, 1996
Creator: Makenas, B. J.; Omberg, R. P.; Trimble, D. J. & Baker, R. B.
Object Type: Article
System: The UNT Digital Library
Characterization of lithium phosphorous oxynitride thin films (open access)

Characterization of lithium phosphorous oxynitride thin films

Electrical and electrochemical properties of an amorphous thin-film lithium electrolyte, lithium phosphorous oxynitride (Lipon), have been studied with emphasis on the stability window vs Li metal and the behavior of the Li/Lipon interface. Ion conductivity of Lipon exhibits Arrhenius behavior at {minus}26 to +140 C, with a conductivity of 1.7 {times} 10{sup {minus}6}S/cm at 25 C and an activity energy of 0.50 {plus_minus} 0.01 eV. A stability window of 5.5 V was observed with respect to a Li{sup +}/Li reference, and no detectable reaction or degradation was evident at the Li/Lipon interface upon lithium cycling.
Date: January 1, 1996
Creator: Yu, Xiaohua; Bates, J. B. & Jellison, G. E., Jr.
Object Type: Article
System: The UNT Digital Library