Partner
UNT Libraries Special Collections
12,894
UNT Libraries Government Documents Department
4,750
UNT Music Library
780
UNT Libraries
779
Private Collection of Jim Bell
753
Oklahoma Historical Society
687
UNT College of Merchandising, Hospitality and Tourism
390
National Museum of the Pacific War/Admiral Nimitz Foundation
268
Sterling Municipal Library
243
UNT College of Information
235
132 More
Collection
The Black Academy of Arts and Letters Records
11,377
Texas Digital Newspaper Program
3,028
Office of Scientific & Technical Information Technical Reports
2,033
Congressional Research Service Reports
1,459
Tocker Foundation Grant
1,055
Oklahoma Digital Newspaper Program
790
College of Music Recordings
756
Jim Bell Texas Architecture Photograph Collection
753
Multicultural Center Records
598
Texas State Publications
464
232 More
Serial/Series Title
Six Brothers on Sax
3,279
Folder 3: 8th Annual Weekend Festival of Black Dance - Rhythm and Soul of a People, March 2-3, 2012
2,247
TBAAL Annual Dance
2,233
Weekend Festival of Black Dance
1,633
Comedy Night at the Muse
1,589
24-Hour FilmFeast
943
Folder 13: 24-Hour Film Feast with Pam Grier, March 19, 2011
943
Jazz at the Muse
609
Dress Performance Theater Series
496
Harvest of Katrina Voices
496
469 More
Degree Department
Degree Discipline
Degree Level
Country
States
Decade
Year
Month
Fermi LAT Observation of Diffuse Gamma-Rays Produced through Interactions Between Local Interstellar Matter and High Energy Cosmic Rays
Observations by the Large Area Telescope (LAT) on the Fermi mission of diffuse {gamma}-rays in a mid-latitude region in the third quadrant (Galactic longitude l from 200{sup o} to 260{sup o} and latitude |b| from 22{sup o} to 60{sup o}) are reported. The region contains no known large molecular cloud and most of the atomic hydrogen is within 1 kpc of the solar system. The contributions of {gamma}-ray point sources and inverse Compton scattering are estimated and subtracted. The residual {gamma}-ray intensity exhibits a linear correlation with the atomic gas column density in energy from 100 MeV to 10 GeV. The measured integrated {gamma}-ray emissivity is (1.63 {+-} 0.05) x 10{sup -26} photons s{sup -1}sr{sup -1} H-atom{sup -1} and (0.66 {+-} 0.02) x 10{sup -26} photons s{sup -1}sr{sup -1} H-atom{sup -1} above 100 MeV and above 300 MeV, respectively, with an additional systematic error of {approx}10%. The differential emissivity from 100 MeV to 10 GeV agrees with calculations based on cosmic ray spectra consistent with those directly measured, at the 10% level. The results obtained indicate that cosmic ray nuclei spectra within 1 kpc from the solar system in regions studied are close to the local interstellar spectra inferred from …
Date:
March 30, 2012
Creator:
Abdo, A. A.; /Naval Research Lab, Wash., D.C. /Federal City Coll.; 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
Fermi Observations of TeV-Selected AGN
None
Date:
March 29, 2012
Creator:
Abdo, A. A.; /Naval Research Lab, Wash., D.C. /Federal City Coll.; 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
Fermi Observations of GRB 090902B: A Distinct Spectral Component in the Prompt and Delayed Emission
None
Date:
March 30, 2012
Creator:
Abdo, A. A.; Ackermann, M.; Ajello, M.; Asano, K.; Atwood, W. B.; Axelsson, M. et al.
Object Type:
Article
System:
The UNT Digital Library
Fermi Large Area Telescope Observations of the Crab Pulsar and Nebula
None
Date:
March 29, 2012
Creator:
Abdo, A. A.; Ackermann, M.; Ajello, M.; Atwood, W. B.; Axelsson, M.; Baldini, L. et al.
Object Type:
Article
System:
The UNT Digital Library
Fermi LAT Detection of Pulsed Gamma-Rays From the Vela-Like Pulsars PSR J1048-5832 and PSR J2229+6114
We report the detection of {gamma}-ray pulsations ({ge}0.1 GeV) from PSR J2229+6114 and PSR J1048-5832, the latter having been detected as a low-significance pulsar by EGRET. Data in the {gamma}-ray band were acquired by the Large Area Telescope (LAT) aboard the Fermi Gamma-ray Space Telescope, while the radio rotational ephemerides used to fold the {gamma}-ray light curves were obtained using the Green Bank Telescope, the Lovell telescope at Jodrell Bank, and the Parkes Telescope. The two young radio pulsars, located within the error circles of the previously unidentified EGRET sources 3EG J1048-5840 and 3EG J2227+6122, present spin-down characteristics similar to the Vela pulsar. PSR J1048-5832 shows two sharp peaks at phases 0.15 {+-} 0.01 and 0.57 {+-} 0.01 relative to the radio pulse confirming the EGRET light curve, while PSR J2229+6114 presents a very broad peak at phase 0.49 {+-} 0.01. The {gamma}-ray spectra above 0.1 GeV of both pulsars are fit with power laws having exponential cutoffs near 3 GeV, leading to integral photon fluxes of (2.19 {+-} 0.22 {+-} 0.32) x 10{sup -7} cm{sup -2} s{sup -1} for PSR J1048-5832 and (3.77 {+-} 0.22 {+-} 0.44) x 10{sup -7} cm{sup -2} s{sup -1} for PSR J2229+6114. The first …
Date:
March 29, 2012
Creator:
Abdo, A. A.; Ackermann, M.; Ajello, M.; Atwood, W. B.; Axelsson, M.; Baldini, L. et al.
Object Type:
Article
System:
The UNT Digital Library
Fermi LAT Observations of LS 5039
The first results from observations of the high-mass X-ray binary LS 5039 using the Fermi Gamma-ray Space Telescope data between 2008 August and 2009 June are presented. Our results indicate variability that is consistent with the binary period, with the emission being modulated with a period of 3.903 {+-} 0.005 days; the first detection of this modulation at GeV energies. The light curve is characterized by a broad peak around superior conjunction in agreement with inverse Compton scattering models. The spectrum is represented by a power law with an exponential cutoff, yielding an overall flux (100 MeV-300 GeV) of 4.9 {+-} 0.5(stat) {+-} 1.8(syst) x 10{sup -7} photon cm{sup -2} s{sup -1}, with a cutoff at 2.1 {+-} 0.3(stat) {+-} 1.1(syst) GeV and photon index {Gamma} = 1.9 {+-} 0.1(stat) {+-} 0.3(syst). The spectrum is observed to vary with orbital phase, specifically between inferior and superior conjunction. We suggest that the presence of a cutoff in the spectrum may be indicative of magnetospheric emission similar to the emission seen in many pulsars by Fermi.
Date:
March 29, 2012
Creator:
Abdo, A. A.; Ackermann, M.; Ajello, M.; Atwood, W. B.; Axelsson, M.; Baldini, L. et al.
Object Type:
Article
System:
The UNT Digital Library
The First Fermi Large Area Telescope Catalog of Gamma-Ray Pulsars
None
Date:
March 30, 2012
Creator:
Abdo, A. A.; Ackermann, M.; Ajello, M.; Atwood, W. B.; Axelsson, M.; Baldini, L. et al.
Object Type:
Article
System:
The UNT Digital Library
Multiwavelength Monitoring of the Enigmatic Narrow-Line Seyfert 1 PMN J0948 0022 in March-July 2009
Following the recent discovery of {gamma} rays from the radio-loud narrow-line Seyfert 1 galaxy PMN J0948+0022 (z = 0.5846), we started a multiwavelength campaign from radio to {gamma} rays, which was carried out between the end of 2009 March and the beginning of July. The source displayed activity at all the observed wavelengths: a general decreasing trend from optical to {gamma}-ray frequencies was followed by an increase of radio emission after less than two months from the peak of the {gamma}-ray emission. The largest flux change, about a factor of about 4, occurred in the X-ray band. The smallest was at ultraviolet and near-infrared frequencies, where the rate of the detected photons dropped by a factor 1.6-1.9. At optical wavelengths, where the sampling rate was the highest, it was possible to observe day scale variability, with flux variations up to a factor of about 3. The behavior of PMN J0948+0022 observed in this campaign and the calculated power carried out by its jet in the form of protons, electrons, radiation, and magnetic field are quite similar to that of blazars, specifically of flat-spectrum radio quasars. These results confirm the idea that radio-loud narrow-line Seyfert 1 galaxies host relativistic jets with …
Date:
March 29, 2012
Creator:
Abdo, A. A.; Ackermann, M.; Ajello, M.; Axelsson, M.; Baldini, L.; Ballet, J. et al.
Object Type:
Article
System:
The UNT Digital Library
Fermi-LAT Discovery of Extended Gamma-Ray Emission in the Direction of Supernova Remnant W51C
The discovery of bright gamma-ray emission coincident with supernova remnant (SNR) W51C is reported using the Large Area Telescope (LAT) onboard the Fermi Gamma-ray Space Telescope. W51C is a middle-aged remnant ({approx}10{sup 4} yr) with intense radio synchrotron emission in its shell and known to be interacting with a molecular cloud. The gamma-ray emission is spatially extended, broadly consistent with the radio and X-ray extent of SNR W51C. The energy spectrum in the 0.2-50 GeV band exhibits steepening toward high energies. The luminosity is greater than 1 x 10{sup 36} erg s{sup -1} given the distance constraint of D > 5.5 kpc, which makes this object one of the most luminous gamma-ray sources in our Galaxy. The observed gamma-rays can be explained reasonably by a combination of efficient acceleration of nuclear cosmic rays at supernova shocks and shock-cloud interactions. The decay of neutral p mesons produced in hadronic collisions provides a plausible explanation for the gamma-ray emission. The product of the average gas density and the total energy content of the accelerated protons amounts to {bar n}{sub H} W{sub p} {approx_equal} 5 x 10{sup 51} (D/6 kpc){sup 2} erg cm{sup -3}. Electron density constraints from the radio and X-ray bands …
Date:
March 30, 2012
Creator:
Abdo, A. A.; Ackermann, M.; Ajello, M.; Baldini, L.; Ballet, J.; Barbiellini, G. et al.
Object Type:
Article
System:
The UNT Digital Library
Fermi Observations of High-Energy Gamma-Ray Emission From GRB 080825C
None
Date:
March 29, 2012
Creator:
Abdo, A. A.; Ackermann, M.; Asano, K.; Atwood, W. B.; Axelsson, M.; Baldini, L. et al.
Object Type:
Article
System:
The UNT Digital Library
Doctoral Recital: 2015-03-26 - Shoko Abe, collaborative piano
Recital presented at the UNT College of Music Voertman Hall in partial fulfillment of the Doctor of Musical Arts (DMA) degree.
Date:
March 26, 2015
Creator:
Abe, Shoko
Object Type:
Sound
System:
The UNT Digital Library
Master's Recital: 2017-03-20 – Kayla Abel, clarinet
Recital presented at the UNT College of Music Recital Hall in partial fulfillment of the Master of Music (MM) degree.
Date:
March 20, 2017
Creator:
Abel, Kayla
Object Type:
Sound
System:
The UNT Digital Library
Pressure-induced isostructural transition in PdN2
We show that a synthesized Pd-N compound crystallize into the pyrite structure by comparison of experimental and calculated Raman intensities. The decreasing Raman intensities with decreasing pressure is explained by a closing of the fundamental band gap. We further discuss the experimental decomposition of this compound at 11 GPa in terms of an isostructural transition within the pyrite structure.
Date:
March 5, 2010
Creator:
Aberg, D; Erhart, P; Crowhurst, J; Zaug, J M; Goncharov, A F & Sadigh, B
Object Type:
Article
System:
The UNT Digital Library
Algal Supply System Design — Harmonized Version
The objective of this design report is to provide
Date:
March 2013
Creator:
Abodeely, Jared; Stevens, Daniel; Ray, Allison & Schaller, Kastli
Object Type:
Report
System:
The UNT Digital Library
The hydrogen bond properties of water from 273 K to 573 K; equations for the prediction of gas-water partition coefficients
Article on the hydrogen bond properties of water from 273 K to 573 K and equations for the prediction of gas-water partition coefficients.
Date:
March 29, 2012
Creator:
Abraham, M. H. (Michael H.) & Acree, William E. (William Eugene)
Object Type:
Article
System:
The UNT Digital Library
The Biological and Toxicological Activity of Gases and Vapors
Article discussing research on the biological and toxicological activity of gases and vapors.
Date:
March 2010
Creator:
Abraham, M. H. (Michael H.); Sánchez-Moreno, Ricardo; Gil-Lostes, Javier; Acree, William E. (William Eugene); Cometto-Muñiz, J. Enrique & Cain, William S.
Object Type:
Article
System:
The UNT Digital Library
Practical Thermal Evaluation Methods For HAC Fire Analysis In Type B Radiaoactive Material (RAM) Packages
Title 10 of the United States Code of Federal Regulations Part 71 for the Nuclear Regulatory Commission (10 CFR Part 71.73) requires that Type B radioactive material (RAM) packages satisfy certain Hypothetical Accident Conditions (HAC) thermal design requirements to ensure package safety during accidental fire conditions. Compliance with thermal design requirements can be met by prototype tests, analyses only or a combination of tests and analyses. Normally, it is impractical to meet all the HAC using tests only and the analytical methods are too complex due to the multi-physics non-linear nature of the fire event. Therefore, a combination of tests and thermal analyses methods using commercial heat transfer software are used to meet the necessary design requirements. The authors, along with his other colleagues at Savannah River National Laboratory in Aiken, SC, USA, have successfully used this 'tests and analyses' approach in the design and certification of several United States' DOE/NNSA certified packages, e.g. 9975, 9977, 9978, 9979, H1700, and Bulk Tritium Shipping Package (BTSP). This paper will describe these methods and it is hoped that the RAM Type B package designers and analysts can use them for their applications.
Date:
March 28, 2013
Creator:
Abramczyk, Glenn; Hensel, Stephen J & Gupta, Narendra K.
Object Type:
Article
System:
The UNT Digital Library
Crash Test and MASH TL-3 Evaluation of the TxDOT Short Radius Guardrail
This the report done by the TTI that investigated, modeled, and simulated crash tested the MASH 3-33, 3-32, 3-31, and 3-35 test conditions.
Date:
March 2015
Creator:
Abu-Odeh, Akram Y.; McCaskey, Katherine; Bligh, Roger P.; Menges, Wanda L. & Kuhn, Darrell L.
Object Type:
Report
System:
The Portal to Texas History
Western Wind and Solar Integration Study: Hydropower Analysis
The U.S. Department of Energy's (DOE) study of 20% Wind Energy by 2030 was conducted to consider the benefits, challenges, and costs associated with sourcing 20% of U.S. energy consumption from wind power by 2030. This study found that with proactive measures, no insurmountable barriers were identified to meet the 20% goal. Following this study, DOE and the National Renewable Energy Laboratory (NREL) conducted two more studies: the Eastern Wind Integration and Transmission Study (EWITS) covering the eastern portion of the U.S., and the Western Wind and Solar Integration Study (WWSIS) covering the western portion of the United States. The WWSIS was conducted by NREL and research partner General Electric (GE) in order to provide insight into the costs, technical or physical barriers, and operational impacts caused by the variability and uncertainty of wind, photovoltaic, and concentrated solar power when employed to serve up to 35% of the load energy in the WestConnect region (Arizona, Colorado, Nevada, New Mexico, and Wyoming). WestConnect is composed of several utility companies working collaboratively to assess stakeholder and market needs to and develop cost-effective improvements to the western wholesale electricity market. Participants include the Arizona Public Service, El Paso Electric Company, NV Energy, Public …
Date:
March 1, 2012
Creator:
Acker, T. & Pete, C.
Object Type:
Report
System:
The UNT Digital Library
Comments on "Role of Anions (Tetrafluoroborate, Perchlorate) of Tetrabutylammonium Salts in Determining Solvation Effects Prevailing in Industrially Essential Solvents Probed by Conductance and FT-IR Spectra"
Article commenting on "Role of Anions (tetrafluoroborate, perchlorate) of tetrabutylammonium salts in determining solvation effects prevailing in industrially essential solvents probed by conductance and FT-IR spectra.
Date:
March 7, 2014
Creator:
Acree, William E. (William Eugene)
Object Type:
Article
System:
The UNT Digital Library
IUPAC-NIST Solubility Data Series. 98. Solubility of Polycyclic Aromatic Hydrocarbons in Pure and Organic Solvent Mixtures-Revised and Updated. Part 3. Neat Organic Solvents
Article on the solubility of polycyclic aromatic hydrocarbons in pure and organic solvent mixtures. This work updates volumes 54, 58, and 59 in the IUPAC Solubility Data Series and presents solubility data for polycyclic aromatic hydrocarbon solutes dissolved in neat organic solvents.
Date:
March 4, 2013
Creator:
Acree, William E. (William Eugene)
Object Type:
Article
System:
The UNT Digital Library
Phase Transition Enthalpy Measurements of Organic and Organometallic Compounds and Ionic Liquids. Sublimation, Vaporization and Fusion Enthalpies From 1880 to 2015. Part 2. C11-C192.
This article updates the second part of a compendium of phase change enthalpies published in 2010 to include the period 1880-2015.
Date:
March 8, 2017
Creator:
Acree, William E. (William Eugene) & Chickos, James S.
Object Type:
Article
System:
The UNT Digital Library
Doctoral Recital: 2011-03-29 - Richard Adams, trumpet
Recital presented at the UNT College of Music Recital Hall in partial fulfillment of the Doctor of Musical Arts (DMA) degree.
Date:
March 29, 2011
Creator:
Adams, Richard (Richard James)
Object Type:
Sound
System:
The UNT Digital Library
The yeast lipin orthologue Pah1p is important for biogenesis of lipid droplets
Article on yeast lipin orthologue Pah1p and its importance for biogenesis of lipid droplets.
Date:
March 21, 2011
Creator:
Adeyo, Oludotun; Horn, Patrick J.; Lee, SungKyung; Binns, Derk Douglas; Chandrahas, Anita; Chapman, Kent D. et al.
Object Type:
Article
System:
The UNT Digital Library