Partner
UNT Libraries Government Documents Department
1,073
UNT Libraries Special Collections
283
Oklahoma Historical Society
163
Sterling Municipal Library
28
Texas Historical Commission
26
League City Helen Hall Library
22
Carl Albert Congressional Research and Studies Center
19
UNT Libraries
17
Alvin Community College
14
Keystone Crossroads Historical Society
10
56 More
Collection
Office of Scientific & Technical Information Technical Reports
1,000
Texas Digital Newspaper Program
251
KXAS-NBC 5 News Collection
214
Oklahoma Digital Newspaper Program
178
Tocker Foundation Grant
147
Chickasha Newspaper Collection
44
Altus Times-Democrat
27
The Baytown Sun
27
Sapulpa Herald
27
Sapulpa Area Newspaper Collection
27
107 More
Degree Department
Degree Discipline
Degree Level
Year
Month
Language
Results:
1 - 24 of
1,879
next
The dijet mass spectrum and angular distributions with the D0 detector
We present preliminary results from an analysis of dijet data collected during the 1994-95 Tevatron Collider run with an integrated luminosity of 91 pb{sup -1}. Measurements of dijet mass spectra and dijet angular distributions in {anti p}p collisions at {radical}s- = 1.8 TeV are compared with next-to-leading order QCD theory.
Date:
July 1, 1996
Creator:
Abachi, S.
Object Type:
Article
System:
The UNT Digital Library
Direct photon measurements by the D{O} experiment
We report a measurement of the cross section for production of isolated photons with transverse energy E{sub T} > 12 GeV in the central (absolute value of {eta} < 0.9) and forward (1.6 < absolute value of {eta} < 2.5) rapidity regions for {bar p}p collisions at center of mass energy {radical}s = 1.8 TeV, using an integrated luminosity of 13 pb{sup {minus}1}. The cross section is compared with a next-to-leading order (NLO) QCD calculation. We also present preliminary measurements of the center of mass scattering angle distribution and of the correlations between the rapidity of the photon and that of the leading jet in the event.
Date:
July 1996
Creator:
Abachi, S.
Object Type:
Article
System:
The UNT Digital Library
A measurement of the ratio of W + 1 jet to W + 0 jets cross sections and comparisons to QCD
A preliminary measurement of the ratio, R{sup 10}, of the production cross sections for W + 1 Jet and W + 0 Jets processes at {radical}s = 1,800 GeV by the D0 Collaboration is presented. A comparison of this ratio is made to next-to-leading order calculations and the implications of these comparisons, especially for the extraction of a value for the strong coupling constant {alpha}{sub s}(M{sub W}{sup 2}), are discussed.
Date:
July 1996
Creator:
Abachi, S.
Object Type:
Report
System:
The UNT Digital Library
Rapidity gaps between jets at D{O}
We present studies of jet production via color-singlet events with low particle multiplicity between the jets. A preliminary study of the multiplicity in other regions of the color singlet events and the dependence of color-singlet exchange on jet transverse energy is also presented.
Date:
July 1, 1996
Creator:
Abachi, S.
Object Type:
Article
System:
The UNT Digital Library
J/{psi} and {psi}{prime} production at CDF
This paper presents measurements of the J/{psi} and {psi}{prime} production cross sections in p{ovr p} collisions at {radical}s = 1.8 TeV. The cross sections are measured in the kinematic region P{sub T} {gt} 5 GeV/c, {vert_bar}{eta}{vert_bar} {lt} 0.6 using the dimuon decay channel. The fraction of events from B decays is measured and used to calculate the J/{psi} and {psi}{prime} cross sections from B decay. The fraction of J/{psi} events from {chi}{sub c} decays is also measured and used to calculate the J/{psi} cross section from direct production. 11 refs., 5 figs., 1 tab.
Date:
July 1, 1996
Creator:
Abe, F.
Object Type:
Report
System:
The UNT Digital Library
Measurement of the B+ and B0 Lifetimes With Topological Vertexing at SLD
The lifetimes of the B{sup +} (B{sub u}) and B{sup 0} (B{sub d}) mesons have been measured using a sample of 150,000 hadronic Z{sup 0} decays collected by the SLD experiment at the SLC between 1993 and 1995. The analysis reconstructs the decay length and charge of the B meson using a novel topological technique. This method results in a high statistics sample of 6,033 (3,665) charged (neutral) vertices. The ratio of B{sup +}:B{sup 0} decays in the charged (neutral) sample is 1.8:1 (1:2.3).
Date:
July 1, 1996
Creator:
Abe, K.; Abe, K. & Abt, I.
Object Type:
Article
System:
The UNT Digital Library
Measurement of the Z{sup 0}-Lepton Coupling Asymmetries A{sub l}
The authors present direct measurements of the Z{sup 0}-lepton coupling asymmetries, A{sub e}, A{sub {mu}}, and A{sub {tau}}. It is based on a data sample selected from 170 k Z{sup 0} decays collected by the SLD detector. The Z`s are produced by collisions of polarized e{sup {minus}} with unpolarized e{sup +} bunches at SLC. The couplings are extracted from the measurement of the left-right forward-backward asymmetry for each lepton species. The preliminary results (using information from all leptonic data for A{sub e}) are: A{sub e} = 0.148 {+-} 0.016, A{sub {mu}} = 0.102 {+-} 0.033 and A{sub {tau}} = 0.190 {+-} 0.034.
Date:
July 22, 1996
Creator:
Abe, K.; Abe, K. & Abt, I.
Object Type:
Article
System:
The UNT Digital Library
[Email correspondence from Julie Abel to Harriet Laney, July, 1996]
Getty Center loan approval to off-set travel funds for Nancy Berry. Added underneath is the initial request sent by Harriet Laney on July 18, 1996.
Date:
July 19, 1996
Creator:
Abel, Julie
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Julie Abel to Nancy Berry and Jack Davis, July 2, 1996]
Letter acknowledging the received financial report on the Getty Center for Education in the Arts' FY95 NSPD grant, and requesting a report of interest earned for future statements. Also included is an approved funding request. In this file are two copies of the same letter.
Date:
July 2, 1996
Creator:
Abel, Julie
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Julie Abel to William McCarter, July 30, 1996]
Letter to William McCarter addressing the enclosed payments of the Getty Center for Education in the Arts' FY97 National Specialty Program grant. Included is a handwritten note that states "Hand carried to grants 8.1.96 left w/ Brenda who spoke w/ Truman."
Date:
July 30, 1996
Creator:
Abel, Julie
Object Type:
Letter
System:
The UNT Digital Library
[Letter to Dr. R. William McCarter from Julie Anne Abel, with attached grant offer letter - July 19, 1996]
A letter to Dr. R. William McCarter from Julie Anne Abel regarding a grant from the Getty Education Institute for the Arts to the North Texas Institute for Educators on the Visual Arts (NTIEVA). A five-page offer letter has been attached.
Date:
July 19, 1996
Creator:
Abel, Julie A.
Object Type:
Letter
System:
The UNT Digital Library
”In God We Trust” on the Nation’s Coins and Currency and as the National Motto: History and Constitutionality
This report discusses the history of the use of the phrase "In God We Trust" on the national currency, and the constitutional legality of the practice.
Date:
July 10, 1996
Creator:
Ackerman, David M.
Object Type:
Report
System:
The UNT Digital Library
Development of a video-based slurry sensor for on-line ash analysis. Quarterly report, April 1, 1996--June 30, 1996
Automatic control of fine coal cleaning circuits has traditionally been limited by the lack of sensors for on-line ash analysis. Although several nuclear-based analyzers are available, none have seen widespread acceptance. This is largely due to the fact that nuclear sensors are expensive and tend to be influenced by changes in seam type and pyrite content. Recently, researchers at VPI&SU have developed an optical sensor for phosphate analysis. The sensor uses image processing technology to analyze video images of phosphate ore. It is currently being used by PCS Phosphate for off-line analysis of dry flotation concentrate. The primary advantages of optical sensors over nuclear sensors are that they are significantly cheaper, are not subject to measurement variations due to changes in high atomic number minerals, are inherently safer and require no special radiation permitting. The purpose of this work is to apply the knowledge gained in the development of an optical phosphate analyzer to the development of an on-line ash analyzer for fine coal slurries. During the past quarter, an industrially-hardened version of the video-based ash analyzer was designed and constructed. All components are now in place at the Middle Fork plant site awaiting the installation of a sample line …
Date:
July 22, 1996
Creator:
Adel, G. T. & Luttrell, G. H.
Object Type:
Report
System:
The UNT Digital Library
Mass transport, corrosion, plugging, and their reduction in solar dish/Stirling heat pipe receivers
Solar dish/Stirling systems using sodium heat pipe receivers are being developed by industry and government laboratories here and abroad. The unique demands of this application lead to heat pipe wicks with very large surface areas and complex three-dimensional flow patterns. These characteristics can enhance the mass transport and concentration of constituents of the wick material, resulting in wick corrosion and plugging. As the test times for heat pipe receivers lengthen, we are beginning to see these effects both indirectly, as they affect performance, and directly in post-test examinations. We are also beginning to develop corrective measures. In this paper, we report on our test experiences, our post-test examinations, and on our initial effort to ameliorate various problems.
Date:
July 1, 1996
Creator:
Adkins, D. R.; Andraka, C. E.; Bradshaw, R. W.; Goods, S. H.; Moreno, J. B. & Moss, T. A.
Object Type:
Article
System:
The UNT Digital Library
Quantitative prediction of stresses during thermoset cure
Two thin-walled Al tubes were filled with epoxy which were cured isothermally; one tube was instrumented with strain gauges, and the other with thermocouples. Finite element codes were used. Predicted and measured centerline hoop strains are shown; predictions and measurements agree. This is being applied to encapsulated components.
Date:
July 1, 1996
Creator:
Adolf, D.; Chambers, B. & Burchett, S.
Object Type:
Article
System:
The UNT Digital Library
Recent advances in the kinetics of oxygen reduction
Oxygen reduction is considered an important electrocatalytic reaction; the most notable need remains improvement of the catalytic activity of existing metal electrocatalysts and development of new ones. A review is given of new advances in the understanding of reaction kinetics and improvements of the electrocatalytic properties of some surfaces, with focus on recent studies of relationship of the surface properties to its activity and reaction kinetics. The urgent need is to improve catalytic activity of Pt and synthesize new, possibly non- noble metal catalysts. New experimental techniques for obtaining new level of information include various {ital in situ} spectroscopies and scanning probes, some involving synchrotron radiation. 138 refs, 18 figs, 2 tabs.
Date:
July 1, 1996
Creator:
Adzic, R.
Object Type:
Report
System:
The UNT Digital Library
Form factors of kaon semileptonic decays
A calculation of the semi-leptonic decays of the kaon (K{sub 13}) is presented. The results are direct predictions of a covariant model of the pion and kaon introduced earlier by Ito, Buck, and Gross. The weak form factors for K{sub 13} are predicted with absolutely no parameter adjustments of the model. The authors obtained for the form factor parameters: f{sub {minus}}(q{sup 2} = m{sub 1}{sup 2})/f{sub +}(q{sup 2} = m{sub 1}{sup 2}) = 0.28 and {lambda}{sub +} = 0.028, both within experimental error bars. Connections of this approach to heavy quark symmetry is also discussed.
Date:
July 1, 1996
Creator:
Afanasev, Andrei & Buck, W.W.
Object Type:
Article
System:
The UNT Digital Library
Tank farm backlog soil sample analysis plan
This document describes the measures to collect samples, perform testing on samples, and make decisions to obtain a Contained- in Determination for tank farms backlog soil.
Date:
July 17, 1996
Creator:
Ahlers, J. D.
Object Type:
Report
System:
The UNT Digital Library
Ash and pulverized coal deposition in combustors and gasifiers. Quarterly technical progress report, January 1--March 31, 1996
During this report period, additional progress was made in accomplishing the tasks of the project. In particular, the computational model for simulating particle motions in turbulent flows was further developed. The model was applied to the dispersion analysis of particles in a circular duct and the transport and deposition of particles in a recirculating region. A model for resuspension of particles from various surfaces in a gas flow is also being developed. The new model accounts for the surface adhesion, as well as the hydrodynamic forces and torques. In addition, the model includes the effect of surface roughness and the structure of near wall turbulent flow. Progress was also made in the experimental study of glass fiber transport and deposition in the aerosol wind tunnel.
Date:
July 1, 1996
Creator:
Ahmadi, G.
Object Type:
Report
System:
The UNT Digital Library
Phase change in uranium: Discrepancy between experiment and theory
Using a diamond-anvil cell (DAC) phase transformation and room temperature Equation of State (EOS) for some actinides and lanthanides were studied to multimegabar (megabar = 100 GPa) pressures. Experimental data are compared with the theoretically predicted crystal structural changes and the pressure-volume relationships. There is a general agreement between theory and experiment for the structural changes in the lighter actinides, however in detail there are some discrepancies still. A generalized trend for the phase transformations in the lanthanides can be seen, which again has broad agreement with theory. We conclude that an accurate and robust theoretical base for predicting the phase transformations in the f-electron metals can be developed by incorporating the DAC data.
Date:
July 22, 1996
Creator:
Akella, J.
Object Type:
Report
System:
The UNT Digital Library
Investigation of Combined S02/N0x Removal by Ceria Sorbents
Simultaneous removal of S02 and NOx using a regenerable solid sorbent will constitute an important improvement over the use of separate processes for the removal of these two pollutants from stack gases and possibly eliminate several shortcomings of the individual S02 and NOx removal operations. Recent studies at PHC considered cerium oxide as an alternate adsorbent to CuO. The present study aims to determine the effects of ammonia on the sulfation of the sorbent and to obtain a rate expression for the regeneration of alumina-supported CeOz sorbents. In the past quarter the effect of fly-ash, ammonia, and water on the sulfation of the sorbent was investigated. The analysis of the economics of a commercial scale ceria process has been sub-contracted to TECOGEN. This work has been completed and the report has been received.
Date:
July 1, 1996
Creator:
Akyurtlu, Ates & Akyurtlu, Jale F.
Object Type:
Report
System:
The UNT Digital Library
QCD subgroup on diffractive and forward physics
The goal is to understand the pomeron, and hence the behavior of total cross sections, elastic scattering and diffractive excitation, in terms of the underlying theory, QCD.
Date:
July 1, 1996
Creator:
Albrow, M.G.; Baker, W.; Bhatti, A. & Bjorken, J.D.
Object Type:
Article
System:
The UNT Digital Library
MACHO observations of Type II cepheids and RV Tauri Stars in the LMC
We report the of the existence of RV Tauri stars in the Large Magellanic Cloud (LMC). This class of variable star has hitherto been unidentified in the Magellanic Clouds. In light and color curve behavior the RV Tauri stars appear to be an extension of the Type II Cepheids to longer periods. A single period-luminosity-color relationship is seen to describe both the Type II Cepheids and the RV Tauri stars in the LMC.
Date:
July 1, 1996
Creator:
Alcock, C.; Pollard, K.A. & Alisman, R.A.
Object Type:
Article
System:
The UNT Digital Library
The Boerne Star (Boerne, Tex.), Vol. 92, No. 45, Ed. 1 Tuesday, July 2, 1996
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
July 2, 1996
Creator:
Aldridge, Leon & D'Amico, Rob
Object Type:
Newspaper
System:
The Portal to Texas History