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Advanced Thermal Interface Materials for Power Electronics
Advancing thermal interface materials for power electronics is a critical factor in power electronics equipment. NREL aims to improve thermal interface materials for power electronics technologies.
Date:
November 8, 2007
Creator:
Narumanchi, S.
Object Type:
Presentation
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 132, No. 24, Ed. 1 Thursday, November 8, 2007
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
November 8, 2007
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
The Altus Times (Altus, Okla.), Vol. 109, No. 137, Ed. 1 Thursday, November 8, 2007
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 8, 2007
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Analysis of the SL-1 Accident Using RELAPS5-3D
On January 3, 1961, at the National Reactor Testing Station, in Idaho Falls, Idaho, the Stationary Low Power Reactor No. 1 (SL-1) experienced a major nuclear excursion, killing three people, and destroying the reactor core. The SL-1 reactor, a 3 MW{sub t} boiling water reactor, was shut down and undergoing routine maintenance work at the time. This paper presents an analysis of the SL-1 reactor excursion using the RELAP5-3D thermal-hydraulic and nuclear analysis code, with the intent of simulating the accident from the point of reactivity insertion to destruction and vaporization of the fuel. Results are presented, along with a discussion of sensitivity to some reactor and transient parameters (many of the details are only known with a high level of uncertainty).
Date:
November 8, 2007
Creator:
Francisco, A.D. and Tomlinson, E. T.
Object Type:
Article
System:
The UNT Digital Library
Archer County Advocate (Holliday, Tex.), Vol. 5, No. 31, Ed. 1 Thursday, November 8, 2007
Weekly newspaper from Holliday, Texas that includes local, state, and national news along with advertising.
Date:
November 8, 2007
Creator:
Stevens, Charlotte
Object Type:
Newspaper
System:
The Portal to Texas History
Archer County News (Archer City, Tex.), No. 45, Ed. 1 Thursday, November 8, 2007
Weekly newspaper from Archer City, Texas that includes local, state, and national news along with advertising.
Date:
November 8, 2007
Creator:
Lewis, Shelley
Object Type:
Newspaper
System:
The Portal to Texas History
Assessing Recharge and Geological Model Uncertainty at the Climax Mine Area of the Nevada Test Site
Hydrologic analyses are commonly based on a single conceptual-mathematical model. Yet hydrologic environments are open and complex, rendering them prone to multiple interpretations and mathematical descriptions. Considering conceptual model uncertainty is a critical process in hydrologic uncertainty assessment. This study assesses recharge and geologic model uncertainty for the Climax mine area of the Nevada Test Site, Nevada. Five alternative recharge models have been independently developed for Nevada and the Death Valley area of California. These models are (1) the Maxey-Eakin model, (2 and 3) a distributed parameter watershed model with and without a runon-runoff component, and (4 and 5) a chloride mass-balance model with two zero-recharge masks, one for alluvium and one for both alluvium and elevation. Similarly, five geological models have been developed based on different interpretations of available geologic information. One of them was developed by the U.S. Geological Survey for the Death Valley Regional Flow System (DVRFS) model; the other four were developed by Bechtel Nevada for the Yucca Flat Corrective Action Unit (CAU). The Climax mine area is in the northern part of the Yucca Flat CAU, which is within the DVRFS. A total of 25 conceptual models are thus formulated based on the five recharge …
Date:
November 8, 2007
Creator:
Ye, M.; Pohlmann, K.; Chapman, J. & Pohll, G.
Object Type:
Article
System:
The UNT Digital Library
[Barbara Grant with certificate]
A photograph of three people standing together during an event hosted by the UNT Multicultural Center on campus. The woman on the left is holding up a Certificate of Appreciation to Barbara Grant from the center. The man on the right is leaning against a UNT podium.
Date:
November 8, 2007
Creator:
University of North Texas. Multicultural Center.
Object Type:
Photograph
System:
The UNT Digital Library
The Bastrop Advertiser (Bastrop, Tex.), Vol. 154, No. 73, Ed. 1 Thursday, November 8, 2007
Semi-weekly newspaper from Bastrop, Texas that includes local, state and national news along with advertising.
Date:
November 8, 2007
Creator:
McAuley, Davis
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 86, No. 342, Ed. 1 Thursday, November 8, 2007
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
November 8, 2007
Creator:
Clements, Clifford E.
Object Type:
Newspaper
System:
The Portal to Texas History
The Canadian Record (Canadian, Tex.), Vol. 117, No. 45, Ed. 1 Thursday, November 8, 2007
Weekly newspaper from Canadian, Texas that includes local, state and national news along with some advertising.
Date:
November 8, 2007
Creator:
Brown, Laurie Ezzell
Object Type:
Newspaper
System:
The Portal to Texas History
Characterization and Development of Advanced Heat Transfer Technologies
Advancing heat transfer technologies is a critical factor in power electronics equipment. NREL aims to characterize and develop advanced heat transfer technologies.
Date:
November 8, 2007
Creator:
Abraham, T.
Object Type:
Presentation
System:
The UNT Digital Library
Child Support Enforcement: $25 Annual User Fee
None
Date:
November 8, 2007
Creator:
Solomon-Fears, Carmen
Object Type:
Report
System:
The UNT Digital Library
Comanche Chief (Comanche, Tex.), No. 28, Ed. 1 Thursday, November 8, 2007
Weekly newspaper from Comanche, Texas that includes local, state, and national news along with advertising.
Date:
November 8, 2007
Creator:
Wilkerson, James C., III
Object Type:
Newspaper
System:
The Portal to Texas History
Comparison of New and Legacy TATBs
Two newly synthesized versions of the insensitive high explosive (IHE) 1,3,5-triamino-2,4,6-trinitrobenzenes (TATBs) were compared to two legacy explosives currently used by the Department of Energy. Except for thermal analysis, small scale safety tests could not distinguish between the different synthetic routes. Morphologies of new TATBs were less faceted and more spherical. The particle size distribution of one new material was similar to legacy TATBs, but the other was very fine. Densities and submicron structure of the new TATBs were also significantly different from the legacy explosives. Pressed pellets of the new explosives were less dense. Recrystallization from sulfolane improved the density and thermal stability of both new TATBs, though the morphology of the recrystallized TATB was nearly hexagonal platelets.
Date:
November 8, 2007
Creator:
Hoffman, D. M.; Willey, T. M.; Mitchell, A. R. & DePiero, S. C.
Object Type:
Article
System:
The UNT Digital Library
Comparison of observed and theoretical Fe L emission from CIE plasmas
We analyze data from the Lawrence Livermore National Lab (LLNL) Electron Beam Ion Trap (EBIT) that simulates a CIE plasma by sweeping the electron beam to approximate a Maxwellian velocity distribution. These results are compared to spectra of confirmed astronomical CIE plasmas (e.g. outer regions of x-ray clusters) observed by XMM/RGS. We utilize the Photon Clean Method (PCM) to quantify these spectra (EBIT and XMM/RGS) in the form of ratios of Fe L lines in the emission complex near 1 keV. The variances of line fluxes are measured with bootstrap methods (Efron 1979). Both of these observations are further compared with theoretical predictions of Fe L line fluxes from APED and similar atomic databases.
Date:
November 8, 2007
Creator:
Carpenter, M; Beiersdorfer, P; Brown, G V; Chen, H C; Gu, M F & Jernigan, J G
Object Type:
Report
System:
The UNT Digital Library
A Contrarian View of How to Develop Creativiity in Science and Engineering
This paper outlines what an individual engineer or scientist can do to increase her or his creativity. It then describes what educators can do and makes two proposals: (a) Reduce the number of courses required for undergraduate and graduate degrees in engineering and science and (b) change the nature of laboratory courses and Ph. D. research so that students have the freedom to try out their own ideas, with the expectation that they will make mistakes and will both expand their creativity and learn more, by doing.
Date:
November 8, 2007
Creator:
Perl, Martin L.
Object Type:
Article
System:
The UNT Digital Library
Cooper Review (Cooper, Tex.), Vol. 127, No. 45, Ed. 1 Thursday, November 8, 2007
Weekly newspaper from Cooper, Texas that includes local, state, and national news along with advertising.
Date:
November 8, 2007
Creator:
Palmer, Roger
Object Type:
Newspaper
System:
The Portal to Texas History
Direct Measurements of an increased threshold for stimulated Brillouin scattering with polarization smoothing in ignition hohlraum plasmas
We demonstrate a significant reduction of stimulated Brillouin scattering by polarization smoothing. The intensity threshold is measured to increase by a factor of 1.7 {+-} 0.2 when polarization smoothing is applied. The results were obtained in a high-temperature (T{sub 3} {approx_equal} 3 keV) hohlraum plasma where filamentation is negligible in determining the backscatter threshold. These results are explained by an analytical model relevant to ICF plasma conditions that modifies the linear gain exponent to account for polarization smoothing.
Date:
November 8, 2007
Creator:
Froula, D; Divol, L; Berger, R L; London, R; Meezan, N; Neumayer, P et al.
Object Type:
Article
System:
The UNT Digital Library
The Dublin Citizen (Dublin, Tex.), Vol. 18, No. 10, Ed. 1 Thursday, November 8, 2007
Weekly newspaper from Dublin, Texas that includes local, state, and national news along with advertising.
Date:
November 8, 2007
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Effect of Island Overlap on ELM Suppression by Resonant Magnetic Perturbations in DIII-D
Recent DIII-D [J.L. Luxon, et al., Nucl. Fusion 43, 1813 (2003)] experiments show a correlation between the extent of overlap of magnetic islands induced in the edge plasma by perturbation coils and complete suppression of Type-I edge localized modes (ELMs) in plasmas with ITER-like electron pedestal collisionality {nu}*{sub e} {approx} 0.1, flux surface shape and low edge safety factor (q{sub 95} {approx} 3.6). With fixed n = 3 resonant magnetic perturbation (RMP) strength, ELM suppression is obtained only in a finite window in the edge safety factor (q{sub 95}) consistent with maximizing the resonant component of the applied helical field. ELM suppression is obtained over an increasing range of q{sub 95} by either increasing the n = 3 RMP strength, or by adding n = 1 perturbations to 'fill in' gaps between islands across the edge plasma. The suppression of Type-I ELMs correlates with a minimum width of the edge region having magnetic islands with Chirikov parameter >1.0, based on vacuum calculations of RMP mode components excluding the plasma response or rotational shielding. The fraction of vacuum magnetic field lines that are lost from the plasma, with connection length to the divertor targets comparable to an electron-ion collisional mean free …
Date:
November 8, 2007
Creator:
Fenstermacher, M. E.; Evans, T. E.; Osborne, T. H.; Schaffer, M. J.; Aldan, M. P.; deGrassie, J. S. et al.
Object Type:
Article
System:
The UNT Digital Library
Electra Star-News (Electra, Tex.), Vol. 102, No. 14, Ed. 1 Thursday, November 8, 2007
Weekly newspaper from Electra, Texas that includes local, state, and national news along with advertising.
Date:
November 8, 2007
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Ensemble: 2007-11-08 – Symphonic Band
Access:
Use of this item is restricted to the UNT Community
Concert presented at the UNT College of Music Winspear Performance Hall.
Date:
November 8, 2007
Creator:
University of North Texas. Symphonic Band.
Object Type:
Sound
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Thursday, November 8, 2007
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 8, 2007
Creator:
Wilson, Chris
Object Type:
Newspaper
System:
The Gateway to Oklahoma History