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Steady Steady State Temperature Distribution in a Thin Cylindrical Shell With Piecewise Variation of External Heat Transfer Coefficient, External Coolant Temperature, and Internal Heat Input

Description: The steady state temperature distribution has been determined for a thin cylindrical shell subject to heat input on the inner surface and heat transfer on the outer surface.
Date: November 13, 1959
Creator: Abernathy, Fred H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Facet Model and Mathematical Morphology for Surface Characterization

Description: This paper describes an algorithm for the automatic segmentation and representation of surface structures and non-uniformities in an industrial setting. The automatic image processing and analysis algorithm is developed as part of a complete on-line web characterization system of a papermaking process at the wet end. The goal is to: (1) link certain types of structures on the surface of the web to known machine parameter values, and (2) find the connection between detected structures at the beg… more
Date: November 13, 1999
Creator: Abidi, B.R.; Goddard, J.S.; Hunt, M.A. & Sari-Sarraf, H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development of residential-conservation-survey methodology for the US Air Force. Interim report. Task two

Description: A US Air Force (USAF) Residential Energy Conservation Methodology was developed to compare USAF needs and available data to the procedures of the Residential Conservation Service (RCS) program as developed for general use by utility companies serving civilian customers. Attention was given to the data implications related to group housing, climatic data requirements, life-cycle cost analysis, energy saving modifications beyond those covered by RCS, and methods for utilizing existing energy cons… more
Date: November 13, 1981
Creator: Abrams, D. W.; Hartman, T. L. & Lau, A. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

ALTERNATIVE MATERIALS TO PD MEMBRANES FOR HYDROGEN PURIFICATION

Description: Development of advanced hydrogen separation membranes in support of hydrogen production processes such as coal gasification and as front end gas purifiers for fuel cell based system is paramount to the successful implementation of a national hydrogen economy. Current generation metallic hydrogen separation membranes are based on Pd-alloys. Although the technology has proven successful, at issue is the high cost of palladium. Evaluation of non-noble metal based dense metallic separation membrane… more
Date: November 13, 2007
Creator: Adams, T & Paul Korinko, P
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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New Neutron Rich Nuclei Near {sup 208}Pb

Description: The level properties near the stable doubly-magic nuclei formed the experimental grounds for the theoretical description of nuclear structure. However with a departure from the beta-stability line, the classical well-established shell structure might be modified. In particular, it may even vanish for extremely exotic neutron-rich nuclei near the neutron-drip line. Presently, it is impossible to verify such predictions by a direct experimental studies of these exotic objects. However, one may tr… more
Date: November 13, 1998
Creator: Aeystoe, J.; Andreyev, A.; Evensen, A.-H.; Hoff, P.; Huhta, M.; Huyse, M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Proton Radioactivity Measurements at HRIBF: Ho, Lu, and Tm Isotopes

Description: Two new isotopes, {sup 145}Tm and {sup 140}Ho and three isomers in previously known isotopes, {sup 141m}Ho, {sup 150m}Lu and {sup 151m}Lu have been discovered and studied via their decay by proton emission. These proton emitters were produced at the Holifield Radioactive Ion Beam Facility (HRIBF) by heavy-ion fusion-evaporation reactions, separated in A/Q with a recoil mass spectrometer (RMS), and detected in a double-sided silicon strip detector (DSSD). The decay energy and half-life was measu… more
Date: November 13, 1998
Creator: Akovali, Y.; Batchelder, J. C.; Bingham, C. R.; Davinson, T.; Ginter, T. N.; Gross, C. J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Anthropogenic Ozone Depletion: Status and Human Health Implications, USGCRP Seminar, 13 November 1995.

Description: In this USGRP Seminar, speakers answer the following questions: what is the status of the Earth's ozone layer? Is the Montreal Protocol working? How much time will be necessary for nature to restore the ozone layer? What are the human health effects of increased ultraviolet radiation associated with depletion of the ozone layer? Who is at risk?
Date: November 13, 1995
Creator: Albritton, Daniel & Kripke, Margaret
Item Type: Refine your search to only Text
Partner: UNT Libraries
open access

Dynamic Strain on Thin Diaphragms of a Mercury Target During 800-MeV Proton Thermal Shock Tests

Description: Extrinsic Fabry-Perot Interferometric fiber optic sensors were used to measure dynamic strains on thin diaphragms of a liquid mercury target, which was subjected to intense 800-MeV proton thermal shock tests. The mercury target is engineered with very thin end plates or diaphragms (either 0.6 mm or 1.9 mm) for studying large strain effects. During thermal shock tests, the mercury in the target interacted with an intense pulsed beam of 2.4x10{sup 13 protons}. The resulting pressure waves lead to… more
Date: November 13, 1999
Creator: Allison, S. W.; Andriulli, J. B.; Cates, M. R.; Earl, D. D.; Haines, J. R.; Morrissey, F. X. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Using Machine Learning to Predict Genes Underlying Differentiation of Multipartite and Unipartite Traits in Bacteria

Description: Article describes how, since the discovery of the second chromosome in the Rhodobacter spaeroides 2.4.1 in 1989 and the revelation of gene sequences, multipartite genomes have been reported in over three hundred bacterial species under nine different phyla. In this study, the authors have attempted to leverage machine learning as a means to identify the genetic factors that underlie the differentiation of bacteria with multipartite and unipartite genomes.
Date: November 13, 2023
Creator: Almalki, Fatemah; Sunuwar, Janak & Azad, Rajeev K.
Item Type: Refine your search to only Article
Partner: UNT College of Science
open access

Developing and Extending a Cyberinfrastructure Model

Description: Increasingly, research and education institutions are realizing the strategic value and challenge of deploying and supporting institutional cyberinfrastructure (CI). Cyberinfrastructure is composed of high performance computing systems, massive storage systems, visualization systems, and advanced networks to interconnect the components within and across institutions and research communities. CI also includes the professionals with expertise in scientific application and algorithm development an… more
Date: November 13, 2007
Creator: Alvarez, Rosio
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

An Investigation at Low Speed of a Large-Scale Triangular Wing of Aspect Ratio Two 1: Characteristics of a Wing Having a Double-Wedge Airfoil Section With Maximum Thickness at 20-Percent Chord

Description: Report presenting an investigation of the low-speed characteristics of a 25-foot span triangular wing with an aspect ratio of 2. the airfoil section of the wing was a symmetrical double wedge with 5-percent maximum thickness at 20-percent chord. Results regarding the longitudinal characteristics, lateral characteristics, and directional characteristics are provided.
Date: November 13, 1947
Creator: Anderson, Adrien E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

New Pellet Injection Schemes on DIII-D

Description: The pellet fueling system on DIII-D has been modified for injection of deuterium pellets from two vertical ports and two inner wall locations on the magnetic high-field side (HFS) of the tokamak. The HFS pellet injection technique was first employed on ASDEX-Upgrade with significant improvements reported in both pellet penetration and fueling efficiency. The new pellet injection schemes on DIII-D required the installation of new guide tubes. These lines are {approx_equal}12.5 m in total length … more
Date: November 13, 1999
Creator: Anderson, P. M.; Baylor, L. R.; Combs, S. K.; Foust, C. R.; Jernigan, T. C. & Robinson, J. I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Helicon Plasma Source Configuration Analysis by Means of Density Measurements

Description: Initial results have been obtained from operation of a helicon plasma source built to conduct optimization studies for space propulsion applications. The source features an easily reconfigurable antenna to test different geometries. Operating with He as the source gas, peak densities >= 1.6X10{sup 19} m{sup -3} have been achieved. Radial and axial plasma profiles have been obtained using a microwave interferometer that can be scanned axially and a Langmuir probe. The source will be used to i… more
Date: November 13, 1999
Creator: Angrilli, F.; Barber, G. C.; Carter, M. D.; Goulding, R. H.; Maggiora, R.; Pavarin, D. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Catalyst and process development for synthesis gas conversion to isobutylene. Quarterly report, July 1, 1992--September 30, 1992

Description: A series of zirconia catalysts prepared by a modified sol gel procedure, coprecipitation with ammonium hydroxide, and by a hydrothermal method were evaluated for catalytic activity. These catalysts were prepared containing silicon, thorium, titanium, cerium and the alkali metals. A catalyst containing 2% thorium on zirconia was the most active. The isobutylene and isobutane selectivity were 19.4 wt % and 1.82 wt %, respectively. Macro- and micro-kinetic models indicate that C0{sub 2} formation … more
Date: November 13, 1992
Creator: Anthony, R. G. & Akgerman, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Diagnosing Plasma Gradients Using Spectral Line Shapes

Description: The development of a set of stable implosions using indirectly driven plastic microspheres with argon (0.1 atm) doped deuterium (50 atm) has provided a unique source for testing the plasma spectroscopy of the high energy density imploded core. The core reaches electron densities of > 10{sup 24} cm{sup -3} with temperatures of {approx} 1 keV and has been shown to be reproducible on a shot to shot basis. Moreover, it has been shown that not only the peak temperature and density are consistent,… more
Date: November 13, 2000
Creator: Back, C. A.; Golovkin, I.; Mancini, R.; Missalla, T.; Landen, O. L.; Lee, R. W. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

TART calculations using the new 2021 energy group cross section library compared with B. Czirr's resonance self-shielding experiments

Description: Results from calculations using a 2021-energy-group cross section library with sufficient energy definition in the lower energy range to resolve the known resorances in /sup 239/Pu and /sup 235/U are compared with flat-plate resorance self-shielding experimental data. The results are somewhat ambiguous. The lower energy ranges appear to agree better with experimental data for small areal densities, but disagree more as the areal density increases. (20 figures) (RWR)
Date: November 13, 1973
Creator: Bacon, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

High yield ICF target design for a Z-pinch driven hohlraum

Description: We describe calculations for a high yield inertial fusion design, employing indirect drive with a double-ended z-pinch-driven hohlraum radiation source. A high current ({approximately}60 MA) accelerator implodes z-pinches within an enclosing hohlraum. Radial spoke arrays and shine shields isolate the capsule from the pinch plasma, magnetic field and direct x-ray shine. Our approach places minimal requirements on z-pinch uniformity and stability, usually problematic due to magneto-Rayleigh Taylo… more
Date: November 13, 1998
Creator: Bailey, D. S.; Hammer, J. H.; Lindl, J. D.; Rambo, P. W.; Tabak, M.; Toor, A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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