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465 Matching Results
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The Altus Times (Altus, Okla.), Vol. 111, No. 338, Ed. 1 Sunday, October 25, 2009
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 25, 2009
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Analysis of Auditory Measures in Normal Hearing Young Male Adult Cigarette Smokers Using Multiple Variable Selection Methods with Predictive Validation Assessments
Article on an analysis of auditory measures in normal hearing young male adult cigarette smokers using multiple variable selection methods with predictive validation assessments.
Date:
October 25, 2009
Creator:
Gopal, Kamakshi V.; Herrington, Richard & Pearce, Jacquelin
Object Type:
Article
System:
The UNT Digital Library
Directional Stand-off Detection of Fast Neutrons and Gammas Using Angular Scattering Distributions
We have investigated the response of a DoubleScatter Neutron Spectrometer (DSNS) for sources at long distances (gr than 200 meters). We find that an alternative method for analyzing double scatter data avoids some uncertainties introduced by amplitude measurements in plastic scintillators.Time of flight is used to discriminate between gamma and neutron events, and the kinematic distributions of scattering angles are assumed to apply. Non-relativistic neutrons are most likely to scatter at 45°, while gammas with energies greater than 2 MeV are most likely to be forward scattered. The distribution of scattering angles of fission neutrons arriving from a distant point source generates a 45° cone, which can be back-projected to give the source direction. At the same time, the distribution of Compton-scattered gammas has a maximum in the forward direction, and can be made narrower by selecting events that deposit minimal energy in the first scattering event. We have further determined that the shape of spontaneous fission neutron spectra at ranges gr than 110 m is still significantly different from thecosmic ray background.
Date:
October 25, 2009
Creator:
Vanier, Peter E.; Dioszegi, Istvan; Salwen, Ccynthia & Forman, Leon
Object Type:
Article
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Sunday, October 25, 2009
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 25, 2009
Creator:
Pittman, Jerry & Wray, Kelly
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Guest Artist Recital: 2009-10-25 - Susanna Phillips, soprano, and Craig Terry, piano
Access:
Use of this item is restricted to the UNT Community
Guest artist recital performed at the UNT College of Music Recital Hall.
Date:
October 25, 2009
Creator:
Phillips, Susanna & Terry, Craig
Object Type:
Sound
System:
The UNT Digital Library
The Panola Watchman (Carthage, Tex.), Vol. 137, No. 85, Ed. 1 Sunday, October 25, 2009
Semiweekly newspaper from Carthage, Texas that includes local, state, and national news along with advertising.
Date:
October 25, 2009
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Polk County Enterprise (Livingston, Tex.), Vol. 127, No. 88, Ed. 1 Sunday, October 25, 2009
Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date:
October 25, 2009
Creator:
Reddell, Valerie
Object Type:
Newspaper
System:
The Portal to Texas History
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 95, No. 30, Ed. 1 Sunday, October 25, 2009
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 25, 2009
Creator:
Shance, Brenda
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
A Sealed, UHV Compatible, Soft X-ray Detector Utilizing Gas Electron Multipliers
An advanced soft X-ray detector has been designed and fabricated for use in synchrotron experiments that utilize X-ray absorption spectroscopy in the study a wide range of materials properties. Fluorescence X-rays, in particular C{sub K} at 277eV, are converted in a low pressure gas medium, and charge multiplication occurs in two gas electron multipliers, fabricated in-house from glass reinforced laminate, to enable single photon counting. The detector satisfies a number of demanding characteristics often required in synchrotron environments, such as UHV compatibility compactness, long-term stability, and energy resolving capability.
Date:
October 25, 2009
Creator:
Schaknowski, N.A. & Smith, G.
Object Type:
Article
System:
The UNT Digital Library
Sweetwater Reporter (Sweetwater, Tex.), Vol. 111, No. 291, Ed. 1 Sunday, October 25, 2009
Daily newspaper from Sweetwater, Texas that includes local, state, and national news along with advertising.
Date:
October 25, 2009
Creator:
Rodriguez, Tatiana
Object Type:
Newspaper
System:
The Portal to Texas History
Te Inclusions in CZT Detectors: New Method for Correcting Their Adverse Effects
Both Te inclusions and point defects can trap the charge carriers generated by ionizing particles in CdZnTe (CZT) detectors. The amount of charge trapped by point defects is proportional to the carriers’ drift time and can be corrected electronically. In the case of Te inclusions, the charge loss depends upon their random locations with respect to the electron cloud. Consequently, inclusions introduce fluctuations in the charge signals, which cannot be easily corrected. In this paper, we describe direct measurements of the cumulative effect of Te inclusions and its influence on the response of CZT detectors of different thicknesses and different sizes and concentrations of Te inclusions. We also discuss a means of partially correcting their adverse effects.
Date:
October 25, 2009
Creator:
Bolotnikov, A. E.; Babalola, S.; Camarda, G. S.; Cui, Y.; Egarievwe, S. U.; Hawrami, R. et al.
Object Type:
Article
System:
The UNT Digital Library
Theoretical Description of the Fission Process
Advanced theoretical methods and high-performance computers may finally unlock the secrets of nuclear fission, a fundamental nuclear decay that is of great relevance to society. In this work, we studied the phenomenon of spontaneous fission using the symmetry-unrestricted nuclear density functional theory (DFT). Our results show that many observed properties of fissioning nuclei can be explained in terms of pathways in multidimensional collective space corresponding to different geometries of fission products. From the calculated collective potential and collective mass, we estimated spontaneous fission half-lives, and good agreement with experimental data was found. We also predicted a new phenomenon of trimodal spontaneous fission for some transfermium isotopes. Our calculations demonstrate that fission barriers of excited superheavy nuclei vary rapidly with particle number, pointing to the importance of shell effects even at large excitation energies. The results are consistent with recent experiments where superheavy elements were created by bombarding an actinide target with 48-calcium; yet even at high excitation energies, sizable fission barriers remained. Not only does this reveal clues about the conditions for creating new elements, it also provides a wider context for understanding other types of fission. Understanding of the fission process is crucial for many areas of science and …
Date:
October 25, 2009
Creator:
Nazarewicz, Witold
Object Type:
Report
System:
The UNT Digital Library
Thermodynamics, Optical Properties and Coordination Modes of Np(V) with Dipicolinic Acid
None
Date:
October 25, 2009
Creator:
Tian, Guoxin; Rao, Linfeng & Teat, Simon J.
Object Type:
Article
System:
The UNT Digital Library
The Bastrop Advertiser (Bastrop, Tex.), Vol. 155, No. 70, Ed. 1 Saturday, October 25, 2008
Semi-weekly newspaper from Bastrop, Texas that includes local, state and national news along with advertising.
Date:
October 25, 2008
Creator:
Wright, Cyndi
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 88, No. 297, Ed. 1 Saturday, October 25, 2008
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
October 25, 2008
Creator:
Clements, Clifford E.
Object Type:
Newspaper
System:
The Portal to Texas History
["Dallas Tenors" concert tape 1 of 2]
Video recording from The Black Academy of Arts and Letters recorded during the Dallas Tenors concert event on October 25th, 2008 at the Clarence Muse Café Theatre. The footage shows tenors John Bailey and Dante Davis performing gospel to opera with an accompanist on piano. Curtis King gives introductions and closing remarks.
Date:
October 25, 2008
Creator:
King, Curtis; Davis, Dante & Bailey, John
Object Type:
Video
System:
The UNT Digital Library
["Dallas Tenors" concert tape 2 of 2]
Video recording from The Black Academy of Arts and Letters recorded during the Dallas Tenors concert event on October 25th, 2008 at the Clarence Muse Café Theatre. The footage shows tenors John Bailey and Dante Davis performing gospel to opera accompanied by a small band.
Date:
October 25, 2008
Creator:
Davis, Dante; Bailey, John & King, Curtis
Object Type:
Video
System:
The UNT Digital Library
["Dallas Tenors" full concert tape]
Video recording from The Black Academy of Arts and Letters recorded during the Dallas Tenors concert event on October 25th, 2008 at the Clarence Muse Café Theatre. The footage shows tenors John Bailey and Dante Davis performing gospel to opera with accompanists on piano and a small band. Curtis King gives introductions and closing remarks.
Date:
October 25, 2008
Creator:
Davis, Dante
Object Type:
Video
System:
The UNT Digital Library
Design and Commissioning Plan for a Laser Heater for FERMI@elettra
The purpose of a laser heater is to increase the electron beam uncorrelated energy spread as a way to control and ideally suppress the microbunching instability in the linac drive for x-rays FELs. We review the motivations for equipping FERMI with a laser heater and provide a specification for the basics parameters as well as a description of a practical layout including desired diagnostics provisions for both the electron and laser beams. We also outline some useful operational guidelines for commissioning.
Date:
October 25, 2008
Creator:
Zholents, Alexander A.; Qiang, J.; Venturini, M.; Wells,, R.; Wilcox, R.; Di Mitri, S. et al.
Object Type:
Report
System:
The UNT Digital Library
[Funeral Program for Annie Bertha Clark Jones, October 25, 2008]
Funeral program for Annie Bertha Clark Jones, born March 11, 1928 and died October 19, 2008. The funeral was held Saturday, October 25, 2008 at F. E. Lewis Memorial Chapel, officiated by Linley Troy Bennett. Funeral arrangements were made through Lewis Funeral Home and she was buried in Fort Sam Houston National Cemetery near San Antonio, Texas.
Date:
October 25, 2008
Creator:
unknown
Object Type:
Pamphlet
System:
The Portal to Texas History
[Group of TAMS alumni at 2008 UNT Homecoming]
A photograph of a group of TAMS alumni at their reunion and reception during the 2008 UNT Homecoming. They are gathered behind the large 'TAMS' standing letters for their group picture. The reception tent is behind them and there are balloons decorating it.
Date:
October 25, 2008
Creator:
University of North Texas. Center for Media Production.
Object Type:
Photograph
System:
The UNT Digital Library
[Group of TAMS alumni at the 2008 UNT Homecoming]
A photograph of a group of TAMS alumni at their reunion and reception during the 2008 UNT Homecoming. They are gathered behind the large 'TAMS' standing letters for their group picture. The reception tent is behind them and there are balloons decorating it.
Date:
October 25, 2008
Creator:
University of North Texas. Center for Media Production.
Object Type:
Photograph
System:
The UNT Digital Library
Heterogeneous seepage at the Nopal I natural analogue site, Chihuahua, Mexico
An integrated field, laboratory, and modeling study of the Pena Blanca (Chihuahua, Mexico) natural analogue site is being conducted to evaluate processes that control the mobilization and transport of radionuclides from a uranium ore deposit. One component of this study is an evaluation of the potential for radionuclide transport through the unsaturated zone (UZ) via a seepage study in an adit at the Nopal I uranium mine, excavated 10 m below a mined level surface. Seasonal rainfall on the exposed level surface infiltrates into the fractured rhyolitic ash-flow tuff and seeps into the adit. An instrumented seepage collection system and local automated weather station permit direct correlation between local precipitation events and seepage within the Nopal I +00 adit. Monitoring of seepage within the adit between April 2005 and December 2006 indicates that seepage is highly heterogeneous with respect to time, location, and quantity. Within the back adit area, a few zones where large volumes of water have been collected are linked to fast flow path fractures (0-4 h transit times) presumably associated with focused flow. In most locations, however, there is a 1-6 month time lag between major precipitation events and seepage within the adit, with longer residence times …
Date:
October 25, 2008
Creator:
Dobson, Patrick F.; Cook, Paul J.; Ghezzehei, Teamrat A.; Rodriguez, J. Alfredo; Villalba, Lourdes & de la Garza, Rodrigo
Object Type:
Article
System:
The UNT Digital Library
Homecoming 2008: College of Business Alumni Celebration
A card from the University of North Texas inviting individuals to attend the Homecoming 2008: College of Business Alumni Celebration, a celebration for Alumni of the College of Business during the university's Homecoming week .
Date:
October 25, 2008
Creator:
University of North Texas
Object Type:
Pamphlet
System:
The UNT Digital Library