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Electron Charged Graphite-based Hydrogen Storage Material
The electron-charge effects have been demonstrated to enhance hydrogen storage capacity using materials which have inherent hydrogen storage capacities. A charge control agent (CCA) or a charge transfer agent (CTA) was applied to the hydrogen storage material to reduce internal discharge between particles in a Sievert volumetric test device. GTI has tested the device under (1) electrostatic charge mode; (2) ultra-capacitor mode; and (3) metal-hydride mode. GTI has also analyzed the charge distribution on storage materials. The charge control agent and charge transfer agent are needed to prevent internal charge leaks so that the hydrogen atoms can stay on the storage material. GTI has analyzed the hydrogen fueling tank structure, which contains an air or liquid heat exchange framework. The cooling structure is needed for hydrogen fueling/releasing. We found that the cooling structure could be used as electron-charged electrodes, which will exhibit a very uniform charge distribution (because the cooling system needs to remove heat uniformly). Therefore, the electron-charge concept does not have any burden of cost and weight for the hydrogen storage tank system. The energy consumption for the electron-charge enhancement method is quite low or omitted for electrostatic mode and ultra-capacitor mode in comparison of other hydrogen storage …
Date:
March 14, 2012
Creator:
0812, Dr. Chinbay Q. Fan R&D Manager Office of Technology and Innovations Phone: 847 768
Object Type:
Report
System:
The UNT Digital Library
Measurement of the Top Quark-Pair Production Cross Section With ATLAS in Pp Collisions at $\sqrt{s}=7$ TeV
None
Date:
June 14, 2013
Creator:
Aad, Georges
Object Type:
Article
System:
The UNT Digital Library
International Linear Collider Reference Design Report Volume 2: Physics at the ILC
The triumph of 20th century particle physics was the development of the Standard Model and the confirmation of many of its aspects. Experiments determined the particle constituents of ordinary matter, and identified four forces that hold matter together and transform it from one form to another. Particle interactions were found to obey precise laws of relativity and quantum theory. Remarkable features of quantum physics were observed, including the real effects of 'virtual' particles on the visible world. Building on this success, particle physicists are now able to address questions that are even more fundamental, and explore some of the deepest mysteries in science. The scope of these questions is illustrated by this summary from the report Quantum Universe: (1) Are there undiscovered principles of nature; (2) How can we solve the mystery of dark energy; (3) Are there extra dimensions of space; (4) Do all the forces become one; (5) Why are there so many particles; (6) What is dark matter? How can we make it in the laboratory; (7) What are neutrinos telling us; (8) How did the universe begin; and (9) What happened to the antimatter? A worldwide program of particle physics investigations, using multiple approaches, is already …
Date:
November 14, 2011
Creator:
Aarons, Gerald; Abe, Toshinori; Abernathy, Jason; Ablikim, Medina; Abramowicz, Halina; Adey, David et al.
Object Type:
Article
System:
The UNT Digital Library
Oral History Interview with Delma Abalos, July 14, 2016
Delma Abalos was born and raised in Odessa, Texas. She attended Odessa College as well as the University of Texas-Permian Basin. Abalos gained her undergraduate degree in political science and her master’s degree in history. She now teaches courses in history, including Mexican American history, at Odessa College. Delma also served within the Ector County ISD board of trustees.
Date:
July 14, 2016
Creator:
Abalos, Delma; Moye, Todd; Wisley, Karen & Zapata, Joel
Object Type:
Video
System:
The Portal to Texas History
Direct Numerical Simulation of Autoignition in a Jet in a Cross-Flow Configuration: ALCF-2 Early Science Program Technical Report
None
Date:
May 14, 2013
Creator:
Abdilghanie, A.; Frouzakis, C.E. & Fischer, P. F.
Object Type:
Report
System:
The UNT Digital Library
Observation of Supernova Remnant IC 443 with the Fermi Large Area Telescope
None
Date:
December 14, 2012
Creator:
Abdo, A. A.
Object Type:
Report
System:
The UNT Digital Library
Insights Into the High-Energy Gamma-Ray Emission of Markarian 501 From Extensive Multifrequency Observations in the Fermi Era
None
Date:
June 14, 2012
Creator:
Abdo, A. A.; Ackermann, M.; Ajello, M.; Allafort, A.; Baldini, L.; Ballet, J. et al.
Object Type:
Article
System:
The UNT Digital Library
Measurement of the Cosmic Ray e+ plus e- Spectrum from 20 GeV to 1 TeV with the Fermi Large Area Telescope
Designed as a high-sensitivity gamma-ray observatory, the Fermi Large Area Telescope is also an electron detector with a large acceptance exceeding 2 m{sup 2}sr at 300 GeV. Building on the gamma-ray analysis, we have developed an efficient electron detection strategy which provides sufficient background rejection for measurement of the steeply-falling electron spectrum up to 1 TeV. Our high precision data show that the electron spectrum falls with energy as E{sup -3.0} and does not exhibit prominent spectral features. Interpretations in terms of a conventional diffusive model as well as a potential local extra component are briefly discussed.
Date:
May 14, 2012
Creator:
Abdo, Aous A.; /Naval Research Lab, Wash., D.C.; Ackermann, M.; /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept.; Ajello, M.; /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. et al.
Object Type:
Article
System:
The UNT Digital Library
[Abilene City Council Minutes: 2010]
Ledger containing minutes of the City Council in Abilene, Texas documenting the group's discussions and activities from January 14, 2010 to December 16, 2010.
Date:
2010-01-14/2010-12-16
Creator:
Abilene (Tex.)
Object Type:
Book
System:
The Portal to Texas History
Observation of Two-Neutrino Double-Beta Decay in Xe-136 with EXO-200
We report the observation of two-neutrino double-beta decay in {sup 136}Xe with T{sub 1/2} = 2.11 {+-} 0.04(stat) {+-} 0.21(syst) x 10{sup 21} yr. This second-order process, predicted by the standard model, has been observed for several nuclei but not for {sup 136}Xe. The observed decay rate provides new input to matrix element calculations and to the search for the more interesting neutrinoless double-beta decay, the most sensitive probe for the existence of Majorana particles and the measurement of the neutrino mass scale.
Date:
September 14, 2012
Creator:
Ackerman, N.; Aharmim, B.; Auger, M.; Auty, D. J.; Barbeau, P. S.; Barry, K. et al.
Object Type:
Article
System:
The UNT Digital Library
Constraining Dark Matter Models from a Combined Analysis of Milky Way Satellites with the Fermi Large Area Telescope
Satellite galaxies of the Milky Way are among the most promising targets for dark matter searches in gamma rays. We present a search for dark matter consisting of weakly interacting massive particles, applying a joint likelihood analysis to 10 satellite galaxies with 24 months of data of the Fermi Large Area Telescope. No dark matter signal is detected. Including the uncertainty in the dark matter distribution, robust upper limits are placed on dark matter annihilation cross sections. The 95% confidence level upper limits range from about 10{sup -26} cm{sup 3} s{sup -1} at 5 GeV to about 5 x 10{sup -23} cm{sup 3} s{sup -1} at 1 TeV, depending on the dark matter annihilation final state. For the first time, using gamma rays, we are able to rule out models with the most generic cross section ({approx}3 x 10{sup -26} cm{sup 3} s{sup -1} for a purely s-wave cross section), without assuming additional boost factors.
Date:
September 14, 2012
Creator:
Ackermann, M.; Ajello, M.; Albert, A.; Atwood, W. B.; Baldini, L.; Ballet, J. et al.
Object Type:
Article
System:
The UNT Digital Library
Constraints on Dark Matter Annihilation in Clusters of Galaxies with the Fermi Large Area Telescope
None
Date:
December 14, 2012
Creator:
Ackermann, M.; Ajello, M.; Allafort, A.; Baldini, L.; Ballet, J.; Barbiellini, G. et al.
Object Type:
Article
System:
The UNT Digital Library
Oral History Interview with Christy Martinez-Garcia, June 14, 2016
Christy Martinez-Garcia was born and raised in Lubbock. She attended Lubbock High School, Lamar University, and completed her degree at Texas Tech University. After college, Martinez-Garcia worked for the Lubbock city government and then for the National Council of La Raza in Washington D.C. Upon her return to Lubbock, Martinez-Garcia sought to counter the local media narrative that mostly only depicted Hispanics as criminals or only immigrants. Thus, she founded the magazine, Latino Lubbock. She also ran for a position in the Lubbock ISD Board of Trustees. Martinez-Garcia has participated in numerous community organizations and was responsible for the naming of Cesar Chavez street in Lubbock as well as having a historical marker for a what once a migrant labor camp.
Date:
June 14, 2016
Creator:
Acuña-Gurrola, Moisés & Martinez-Garcia, Christy
Object Type:
Video
System:
The Portal to Texas History
Oral History Interview with Solomon Ortiz, July 14, 2016
Solomon Porfirio Ortiz is the former U.S. Representative for Texas's 27th congressional district, based in Corpus Christi, serving from 1983 until 2011. He is a member of the Democratic Party. In his interview, he discussed growing up in Robstown and his long political career.
Date:
July 14, 2016
Creator:
Acuña-Gurrola, Moisés; Wall, James & Ortiz, Solomon
Object Type:
Video
System:
The Portal to Texas History
Israel: Background and U.S. Relations
This report explores the history of U.S.-Israeli relationships and current Israeli issues such as border security, defense, Israel-Palestinian conflicts, economy, and democracy.
Date:
February 14, 2011
Creator:
Addis, Casey L.
Object Type:
Report
System:
The UNT Digital Library
Doctoral Lecture: 2011-07-14 – Michael Adduci, oboe
Lecture presented at the UNT College of Music Room M258 in partial fulfillment of the Doctor of Musical Arts (DMA) degree.
Date:
July 14, 2011
Creator:
Adduci, Michael
Object Type:
Sound
System:
The UNT Digital Library
Gravitomagnetism and Spinor Quantum Mechanics
We give a systematic treatment of a spin 1=2 particle in a combined electromagnetic field and a weak gravitational field that is produced by a slowly moving matter source. This paper continues previous work on a spin zero particle, but it is largely self-contained and may serve as an introduction to spinors in a Riemann space. The analysis is based on the Dirac equation expressed in generally covariant form and coupled minimally to the electromagnetic field. The restriction to a slowly moving matter source, such as the earth, allows us to describe the gravitational field by a gravitoelectric (Newtonian) potential and a gravitomagnetic (frame-dragging) vector potential, the existence of which has recently been experimentally verified. Our main interest is the coupling of the orbital and spin angular momenta of the particle to the gravitomagnetic field. Specifically we calculate the gravitational gyromagnetic ratio as g{sub g} = 1 ; this is to be compared with the electromagnetic gyromagnetic ratio of g{sub e} = 2 for a Dirac electron.
Date:
September 14, 2012
Creator:
Adler, Ronald J.; /Stanford U., HEPL /San Francisco State U.; Chen, Pisin; /Taiwan, Natl. Taiwan U. /KIPAC, Menlo Park /SLAC; Varani, Elisa & /Unlisted
Object Type:
Article
System:
The UNT Digital Library
Ensemble: 2018-04-14 – 21st Annual African Cultural Festival of Traditional Ethnic Music and Dance
Access:
Use of this item is restricted to the UNT Community
World ensembles concert performed at the UNT College of Music Voertman Hall.
Date:
April 14, 2018
Creator:
Afrikania Cultural Troupe of Ghana
Object Type:
Video
System:
The UNT Digital Library
CRADA Final Report: Process development for hybrid solar cells
TCF funding of a CRADA between LBNL and RSLE leveraged RSLE's original $1M investment in LBNL research and led to development of a solar cell fabrication process that will bring the high efficiency, high voltage hybrid tandem solar cell closer to commercialization. RSLE has already built a pilot line at its Phoenix, Arizona site.
Date:
February 14, 2011
Creator:
Ager, Joel W.
Object Type:
Report
System:
The UNT Digital Library
Final Report
This grant resulted in three distinct scientific advances, the most important being the discovery of a inhomogeneous superconducting state first predicted over 40 years ago. Two graduate students received PhDs as a result of this grant, and a major US high magnetic field facility was rebuilt.
Date:
June 14, 2013
Creator:
Agosta, Charles C.
Object Type:
Report
System:
The UNT Digital Library
Oral History Interview with Alice Rios, November 14, 2018
Interview with Alice Rios, a former anchor at KRLD radio discussing her childhood in Houston, Texas, education, and highlights from her career in journalism.
Date:
November 14, 2018
Creator:
Aguilar, Rebecca & Rios, Alice
Object Type:
Text
System:
The UNT Digital Library
The Future of the Eurozone and U.S. Interests
This report details the consequences of the European financial crisis of 2010 beginning with the economic fallout of the Greek economy. It then highlights six factors that would be instrumental regarding the "Eurozones" future.
Date:
September 14, 2010
Creator:
Ahearn, Raymond J.; Jackson, James K.; Nelson, Rebecca M. & Weiss, Martin A.
Object Type:
Report
System:
The UNT Digital Library
Studies of non-proportionality in alkali halide and strontium iodide scintillators using SLYNCI
Recently a collaboration of LLNL and LBNL has constructed a second generation Compton coincidence instrument to study the non-proportionality of scintillators. This device, known as SLYNCI (Scintillator Light-Yield Non-proportionality Characterization Instrument), has can completely characterize a sample with less than 24 hours of running time. Thus, SLYNCI enables a number of systematic studies of scintillators since many samples can be processed in a reasonable length of time. These studies include differences in nonproportionality between different types of scintillators, different members of the same family of scintillators, and impact of different doping levels. The results of such recent studies are presented here, including a study of various alkali halides, and the impact of europium doping level in strontium iodide. Directions of future work area also discussed.
Date:
October 14, 2010
Creator:
Ahle, Larry; Bizarri, Gregory; Boatner, Lynn; Cherepy, Nerine J.; Choong, Woon-Seng; Moses, William W. et al.
Object Type:
Article
System:
The UNT Digital Library
Doctoral Recital: 2017-04-14 – Meilin Ai, piano
Recital presented at the UNT College of Music Voertman Hall in partial fulfillment of the Doctor of Musical Arts (DMA) degree.
Date:
April 14, 2017
Creator:
Ai, Meilin
Object Type:
Sound
System:
The UNT Digital Library