Resource Type
Partner
UNT Libraries Government Documents Department
5,016
UNT Libraries Special Collections
18
UNT Libraries
5
UNT Center for Economic Development and Research
3
UNT College of Information
3
International Internet Preservation Consortium
2
Dallas Area Rapid Transit (DART)
1
Oklahoma Historical Society
1
National WASP WWII Museum
1
Collection
Office of Scientific & Technical Information Technical Reports
2,423
Congressional Research Service Reports
2,055
Government Accountability Office Reports
446
Texas State Auditor's Office: Reports
45
Texas State Publications
34
End of Term Publications
10
UNT Scholarly Works
8
Texas Daily Newspaper Association
7
D. Jack Davis Art Education Collection
6
LGBT Collections
5
12 More
Degree Department
Country
States
Decade
Month
Language
5,050 Matching Results
Results open in a new window/tab.
prev
Results:
5,041 - 5,050 of
5,050
Status report on the development of instrumentation for bunch by bunch measurement and optimization of luminosity in the LHC
None
Date:
May 1, 2000
Creator:
Turner, W.C.
System:
The UNT Digital Library
Structure and dynamics in low-dimensional guest-host systems
This is the final report of the fourth of four three year grants of the same title. The program evolved from an earlier DOE grant on graphite intercalation compounds. Since its inception eight years ago, the focus evolved continuously from conjugated polymers to fullerenes, disordered carbons for Li-ion battery applications, and most recently carbon nanotubes, with side excursion back to GIC's to exploit a recent advance in synthesis of a potentially exciting new phase. The unifying themes are the versatility of carbon in forming novel solids, and the flexibility of intercalation chemistry to provide new materials with potentially useful properties.
Date:
May 1, 2000
Creator:
Fischer, John E.
System:
The UNT Digital Library
Surfkin: A program to solve transient and steady state heterogeneous reaction kinetics
Heterogeneous chemical reactions occurring at a gas/surface interface are fundamental in a variety of important applications, such as combustion, catalysis, chemical vapor deposition and plasma processing. Detailed simulation of these processes may involve complex, coupled fluid flow, heat transfer, gas-phase chemistry, in addition to heterogeneous reaction chemistry. This report documents the Surfkin program, which simulates the kinetics of heterogeneous chemical reactions. The program is designed for use with the Chemkin and Surface Chemkin (heterogeneous chemistry) programs. It calculates time-dependent or steady state surface site fractions and bulk-species production/destruction rates. The surface temperature may be specified as a function of time to simulate a temperature-programmed desorption experiment, for example. This report serves as a user's manual for the program, explaining the required input and format of the output. Two detailed example problems are included to further illustrate the use of this program.
Date:
May 1, 2000
Creator:
COLTRIN,MICHAEL E.; WIXOM,RYAN R. & DANDY,DAVID S.
System:
The UNT Digital Library
Technologies and tools for high-performance distributed computing. Final report
In this project we studied the practical use of the MPI message-passing interface in advanced distributed computing environments. We built on the existing software infrastructure provided by the Globus Toolkit{trademark}, the MPICH portable implementation of MPI, and the MPICH-G integration of MPICH with Globus. As a result of this project we have replaced MPICH-G with its successor MPICH-G2, which is also an integration of MPICH with Globus. MPICH-G2 delivers significant improvements in message passing performance when compared to its predecessor MPICH-G and was based on superior software design principles resulting in a software base that was much easier to make the functional extensions and improvements we did. Using Globus services we replaced the default implementation of MPI's collective operations in MPICH-G2 with more efficient multilevel topology-aware collective operations which, in turn, led to the development of a new timing methodology for broadcasts [8]. MPICH-G2 was extended to include client/server functionality from the MPI-2 standard [23] to facilitate remote visualization applications and, through the use of MPI idioms, MPICH-G2 provided application-level control of quality-of-service parameters as well as application-level discovery of underlying Grid-topology information. Finally, MPICH-G2 was successfully used in a number of applications including an award-winning record-setting computation in numerical …
Date:
May 1, 2000
Creator:
Karonis, Nicholas T.
System:
The UNT Digital Library
TECHNOLOGY TRANSFER TO U.S. INDEPENDENT OIL AND NATURAL GAS PRODUCERS
During FY00, the Petroleum Technology Transfer Council (PTTC) continued pursuing its mission of helping U.S. independent oil and gas producers make timely, informed technology decisions. PTTC's national organization has active grassroots programs that connect with independents through its 10 Regional Lead Organizations (RLOs). These activities--including technology workshops, resource centers, websites, newsletters, and other outreach efforts--are guided by regional Producer Advisory Groups (PAGs). The role of the national headquarters (HQ) staff includes planning and managing the PTTC program, conducting nation-wide technology transfer activities, and implementing a comprehensive communications effort. This technical progress report summarizes PTTC's accomplishments during FY00, which lay the groundwork for further growth in the future.
Date:
May 1, 2000
Creator:
unknown
System:
The UNT Digital Library
Texas Construction and Maintenance Report: May 2000
Monthly report documenting contracts for road construction and maintentance in Texas, organized by county and district. It includes information about each project including contractor, dates, costs, and other relevant data.
Date:
May 1, 2000
Creator:
Texas. Department of Transportation. Construction Division.
System:
The Portal to Texas History
Theoretical Minimum Energies to Produce Steel for Selected Conditions
The energy used to produce liquid steel in today's integrated and electric arc furnace (EAF) facilities is significantly higher than the theoretical minimum energy requirements. This study presents the absolute minimum energy required to produce steel from ore and mixtures of scrap and scrap alternatives. Additional cases in which the assumptions are changed to more closely approximate actual operating conditions are also analyzed. The results, summarized in Table E-1, should give insight into the theoretical and practical potentials for reducing steelmaking energy requirements. The energy values have also been converted to carbon dioxide (CO{sub 2}) emissions in order to indicate the potential for reduction in emissions of this greenhouse gas (Table E-2). The study showed that increasing scrap melting has the largest impact on energy consumption. However, scrap should be viewed as having ''invested'' energy since at one time it was produced by reducing ore. Increasing scrap melting in the BOF mayor may not decrease energy if the ''invested'' energy in scrap is considered.
Date:
May 1, 2000
Creator:
Fruehan, R. J.; Fortini, O.; Paxton, H. W. & Brindle, R.
System:
The UNT Digital Library
Uncertainty Analysis of an Accelerometer DAQ System
None
Date:
May 1, 2000
Creator:
NAKOS,JAMES T.
System:
The UNT Digital Library
Uncertainty Budget and Efficiency Analysis for the 239Pu (n,2ny) Partial Reaction Cross-Section Measurements
The {sup 239}Pu(n,2n{gamma}){sup 238}Pu partial reaction cross-section, {sigma}{sub (n,2n{gamma})}, has been measured as a function of neutron energy for several transitions in {sup 238}Pu. Partial {gamma}-ray cross sections for yrast, ''collector'' transitions, can provide especially valuable constraints on the magnitude and shape of the total (n,2n) reaction cross-section. In essence, nuclear reaction models will be used to infer the shape and magnitude of the total (n,2n) reaction cross-section from the measured partial {gamma}-ray cross-sections. The reason for undertaking this somewhat indirect approach is that previous measurements of the {sup 239}Pu(n,2n{gamma}) have been hampered by a variety of constraints. Activation measurements have several hurdles: (1) intense flux and long counting times are required to overcome the relatively long half-life of {sup 238}Pu (87 years) and (2) isotopically pure samples of {sup 239}Pu in an environment free of {sup 238}Pu contamination are difficult to come by. Neutron counting experiments are subject to significant uncertainties because (1) large background statistics from fission neutrons and (2) the experimental fission neutron multiplicity spectrum is subject to systematic errors because the flux of low-energy neutrons which induce fissions in thermally-fissile {sup 239}Pu is very difficult to characterize. In this measurement, spallation neutrons are provided by the …
Date:
May 1, 2000
Creator:
McNabb, D. P.; Archer, D. E.; Becker, J. A.; Bernstein, L. A. & Garrett, P. E.
System:
The UNT Digital Library
User's guide for the KBERT 2.0 code
The possibility of worker exposure to radioactive materials during accidents at nuclear facilities is a principal concern of the DOE. The KBERT analysis tool has been developed at Sandia National Laboratories under DOE support to address this issue by assisting in the estimation of risks posed by accidents at chemical and nuclear facilities. KBERT is an acronym for Knowledge-Based system for Estimating hazards of Radioactive material release Transients. KBERT's primary purpose is to predict doses to in-facility workers due to accidental releases of radioactivity. Models are also in KBERT for predicting doses to the public based upon plume dispersal models. This report gives detailed instructions on how a user, starting with knowledge of design, layout and potential hazards of a facility, can use KBERT to assess the risks to workers in that facility and to the public as a result of releases from the facility. A key feature of KBERT is the inclusion of the non-facility-specific material release, radioactive decay, and dose databases (i.e., knowledge bases) that might also be needed for such an assessment. The material release characteristics are based on the 1994 DOE Handbook for airborne release fractions/rates and respirable fractions for nonreactor nuclear facilities. Another important feature …
Date:
May 1, 2000
Creator:
Washington, K. E.; Murata, K. K.; Browitt, D. S.; Brockmann, J. E.; Griffith, R. O.; Gelbard, F. et al.
System:
The UNT Digital Library