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The Altus Times (Altus, Okla.), Vol. 109, No. 127, Ed. 1 Sunday, October 28, 2007
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 28, 2007
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 109, No. 128, Ed. 1 Monday, October 29, 2007
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 29, 2007
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 109, No. 129, Ed. 1 Tuesday, October 30, 2007
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 30, 2007
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 109, No. 130, Ed. 1 Wednesday, October 31, 2007
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 31, 2007
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Amplification of an ultra short pulse laser by stimulated Raman scattering of a 1 ns pulse in a low density plasma
Experiments are described in which a 1mJ, 1ps, 1200 nm seed laser beam is amplified by interaction with an intersecting 350 J, 1ns, 1054 nm pump beam in a low density (1 x 10{sup 19}/cm{sup 3}) plasma. The transmission of the seed beam is observed to be enhanced by > {approx} 25 x when the plasma is near the resonant density for stimulated Raman scattering (SRS), compared to measured transmissions at wavelengths just below the resonant value. The amplification is observed to increase rapidly with increases in both pump intensity and plasma density.
Date:
October 8, 2007
Creator:
Kirkwood, R. K.; Dewald, E.; Niemann, C.; Meezan, N.; Wilks, S. C.; Price, D. W. et al.
Object Type:
Article
System:
The UNT Digital Library
Amplification of PVT1 contributes to the pathophysiology of ovarian and breast cancer
Purpose. This study was designed to elucidate the role of amplification at 8q24 in the pathophysiology of ovarian and breast cancer since increased copy number at this locus is one of the most frequent genomic abnormalities in these cancers. Experimental Design. To accomplish this, we assessed the association of amplification at 8q24 with outcome in ovarian cancers using FISH to tissue microarrays and measured responses of ovarian and breast cancer cell lines to specific small interfering RNAs (siRNA) against the oncogene, MYC, and a putative noncoding RNA, PVT1, both of which map to 8q24. Results. Amplification of 8q24 was associated with significantly reduced survival duration. In addition, siRNA-mediated reduction in either PVT1 or MYC expression inhibited proliferation in breast and ovarian cancer cell lines in which they were both amplified and over expressed but not in lines in which they were not amplified/over expressed. Inhibition of PVT1 expression also induced a strong apoptotic response in cell lines in which it was over expressed but not in lines in which it was not amplified/over expressed. Inhibition of MYC, on the other hand, did not induce an apoptotic response in cell lines in which MYC was amplified and over expressed. Conclusions. These …
Date:
October 9, 2007
Creator:
Guan, Yinghui; Kuo, Wen-Lin; Stilwell, Jackie; Takano, Hirokuni; Lapuk, Anna; Fridlyand, Jane et al.
Object Type:
Article
System:
The UNT Digital Library
Anabolic Steroid Abuse: Federal Efforts to Prevent and Reduce Anabolic Steroid Abuse among Teenagers
A letter report issued by the Government Accountability Office with an abstract that begins "The abuse of anabolic steroids by teenagers--that is, their use without a prescription--is a health concern. Anabolic steroids are synthetic forms of the hormone testosterone that can be taken orally, injected, or rubbed on the skin. Although a 2006 survey funded by the National Institute on Drug Abuse (NIDA) found that less than 3 percent of 12th graders had abused anabolic steroids, it also found that about 40 percent of 12th graders described anabolic steroids as "fairly easy" or "very easy" to get. The abuse of anabolic steroids can cause serious health effects and behavioral changes in teenagers. GAO was asked to examine federally funded efforts to address the abuse of anabolic steroids among teenagers and to review available research on this issue. This report describes (1) federally funded efforts that address teenage abuse of anabolic steroids, (2) available research on teenage abuse of anabolic steroids, and (3) gaps or areas in need of improvement that federal officials and other experts identify in research that addresses teenage anabolic steroid abuse. To do this work, GAO reviewed federal agency materials and published studies identified through a literature …
Date:
October 31, 2007
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
[Anai Arzola at etiquette dinner]
Photograph of Anai Arzola sitting at a table during an etiquette dinner that was put together by the Career Center on the UNT Campus. The tables have two drinks, several plates with different dishes, and mugs with napkins inside of them. There are also wind-up teeth on the table.
Date:
October 2, 2007
Creator:
Baugh, Brian
Object Type:
Photograph
System:
The UNT Digital Library
Analysis and Calibration of CRF Raman Lidar Cloud Liquid Water Measurements
The Atmospheric Radiation Measurement (ARM) Raman lidar (RL), located at the Southern Great Plains (SGP) Climate Research Facility (CRF), is a unique state-of-the-art active remote sensor that is able to measure profiles of water vapor, aerosol, and cloud properties at high temporal and vertical resolution throughout the diurnal cycle. In October 2005, the capability of the RL was extended by the addition of a new detection channel that is sensitive to the Raman scattering of liquid water. This new channel permits the system, in theory, to measure profiles of liquid water content (LWC) by the RL. To our knowledge, the ARM RL is the only operation lidar with this capability. The liquid water Raman backscattering cross-section is a relatively weak and spectrally broad feature, relative to the water vapor Raman backscatter signal. The wide bandpass required to achieve reasonable signal-to-noise in the liquid water channel essentially eliminates the ability to measure LWC profiles during the daytime in the presence of large solar background, and thus all LWC observations are nighttime only. Additionally, the wide bandpass increases the probability that other undesirable signals, such as fluorescence from aerosols, may contaminate the observation. The liquid water Raman cross-section has a small amount …
Date:
October 31, 2007
Creator:
Turner, D.D. Whiteman, D.N. Russo, F.
Object Type:
Report
System:
The UNT Digital Library
Analysis Methods for Milky Way Dark Matter Halo Detection
We present methods for the analysis of dark matter annihilation in the smooth halo of the Milky Way galaxy. We model the diffuse gamma-ray background using GALPROP, and model the halo using an NFW profile and the gamma-ray spectrum for WIMP pair annihilation. We plan to combine these models with the point source catalog and a simple model for the extragalactic gamma ray background. Using the downhill simplex method to converge on the maximum likelihood value, we can vary key parameters in these models and fit them to the gamma-ray data. Through the use of the Markov Chain Monte Carlo (MCMC) method we can then map out the likelihood as a function of the model parameters to estimate the correlated errors on these parameters.
Date:
October 11, 2007
Creator:
Sander, Aaron; Winer, Brian; Hughes, Richard; U., /Ohio State; Wai, Larry; /KIPAC, Menlo Park et al.
Object Type:
Article
System:
The UNT Digital Library
Analysis Methods for Milky Way Dark Matter Satellite Detection
The Gamma Ray Large Area Space Telescope (GLAST) Large Area Telescope (LAT) Dark Matter and New Physics Working group has been developing approaches for the indirect detection of in situ annihilation of dark matter. Our work has assumed that a significant component of dark matter is a new type of Weakly Interacting Massive Particle (WIMP) in the 100GeV mass range. The annihilation of two WIMPs results in the production of a large number of high energy gamma rays (>1GeV) that can be well measured by the GLAST LAT. The cold dark matter model implies a significant number of as yet unobserved dark matter satellites in our galaxy. The spectra of these galactic satellites are considerably harder than most, if not all, astrophysical sources, have an endpoint at the mass of the WIMP, and are not power laws. We describe a preliminary feasibility study for the indirect detection of dark matter satellites in the Milky Way using the GLAST LAT.
Date:
October 19, 2007
Creator:
Wang, Ping; Wai, Larry; Bloom, Elliott & /Stanford U., Phys. Dept. /SLAC
Object Type:
Article
System:
The UNT Digital Library
Analysis of Hexanitrostilbene (HNS) and Dipicryethane (DPE) for Mutagenicity by the Ames/Salmonella Assay
The Ames/Salmonella assay, developed by Professor Bruce Ames at the University of California, Berkeley, is a rapid and sensitive assay for detecting mutagenicity of various chemical compounds (Maron and Ames, 1983). It is a widely accepted short-term assay for detecting chemicals that induce mutations in the histidine (his) gene of Salmonella typhimurium. This is a reverse mutation assay that detects the mutational reversion of his-dependent Salmonella to the his-independent counterpart. Thereby, mutagenic compounds will increase the frequency of occurrence of his-independent bacterial colonies. The assay utilizes the specific genetically constructed strains of bacteria either with or without mammalian metabolic activation enzymes (S9), Aroclor induced rat liver homogenate to assess the mutagenicity of different compounds. In this study, we will use the Ames/Salmonella assay to investigate the mutagenicity of Hexanitrostilbene (HNS) from both Bofors and Pantex, and Dipicryethane (DPE).
Date:
October 12, 2007
Creator:
Wu, Rebekah W. & Felton, James S.
Object Type:
Report
System:
The UNT Digital Library
Analysis of output surface damage resulting from single 351 nm, 3 ns pulses on sub-nanosecond laser conditioned KD2PO4 crystals
We observe that by conditioning DKDP using 500 ps laser pulses, the bulk damage threshold becomes essentially equivalent to the surface damage threshold. We report here the findings of our study of laser initiated output surface damage on 500 ps laser conditioned DKDP for test pulses at 351 nm, 3 ns. The relation between surface damage density and damaging fluence (r(f)) is presented for the first time and the morphologies of the surface sites are discussed. The results of this study suggest a surface conditioning effect resulting from exposure to 500 ps laser pulses.
Date:
October 31, 2007
Creator:
Jarboe, J.; Adams, J. J. & Hackel, R.
Object Type:
Article
System:
The UNT Digital Library
Analysis of Rayleigh-Taylor Instability: Statistics on Rising Bubbles and Falling Spikes
The analysis of coherent structures in Rayleigh-Taylor simulations is a challenging task as the lack of a precise definition of these structures is compounded by the massive size of the datasets. In an earlier work, we used techniques from image analysis to count these coherent structures in two high-resolution simulations, one a large-eddy simulation with 30 terabytes of analysis data, and the other a direct numerical simulation with 80 terabytes of analysis data. Our analysis indicated that there were four distinct regimes in the process of the mixing of the two fluids, starting from the initial linear stage, followed by the non-linear stage with weak turbulence, the mixing transition stage, and the final stage of strong turbulence. In this paper, we extend our earlier work to focus on only the rising bubbles and the falling spikes. We first consider different ways in which we can constrain the bubble and spike definitions and then extract various statistics on them. Our results on the rising bubble and falling spike counts again show that there are four regimes in the process of fluid mixing, each characterized by an integer-valued slope. Further, the average bubble heights and spike depths are related to similar results …
Date:
October 30, 2007
Creator:
Kamath, C; Gezahegne, A & Miller, P
Object Type:
Report
System:
The UNT Digital Library
Analysis of Slice Transverse Emittance Evolution in a Photocathode RF Gun
This report is an analysis of slice transverse emittance evolution in a photocathode RF gun
Date:
October 14, 2007
Creator:
Huang, Zhirong; Ding, Yuantao & Qiang, Ji
Object Type:
Article
System:
The UNT Digital Library
Analysis of Slice Transverse Emittance Evolution ina Photocathode RF Gun
The slice transverse emittance of an electron beam is of critical significance for an x-ray FEL. In a photocathode RF gun, the slice transverse emittance is not only determined by the emission process, but also influenced strongly by the non-linear space charge effect. In this paper, we study the slice transverse emittance evolution in a photocathode RF gun using a simple model that includes effects of RF acceleration, focusing, and space charge force. The results are compared with IMPACT-T space charge simulations and may be used to understand the development of the slice emittance in an RF gun.
Date:
October 17, 2007
Creator:
Huang, Z.; Ding, Y.; /SLAC; Qiang, J. & /LBL, Berkeley
Object Type:
Article
System:
The UNT Digital Library
Analysis of the Proposed Tax Exclusion for Canceled Mortgage Debt Income
Following the financial crisis, the Mortgage Forgiveness Debt Relief Act of 2007 was passed in the House of Representatives. This bill would exclude canceled qualified residential debt from income, not allowing taxpayers who do not qualify for the existing exceptions to exclude canceled mortgage debt income. This report provides an overview of the act, legislative developments, analysis, and related policy options.
Date:
October 16, 2007
Creator:
Jackson, Pamela J.
Object Type:
Report
System:
The UNT Digital Library
Analyzing signatures of aerosol-cloud interactions from satelliteretrievals and the GISS GCM to constrain the aerosol indirecteffect
Evidence of aerosol-cloud interactions are evaluated using satellite data from MODIS, CERES, AMSR-E, reanalysis data from NCEP and data from the NASA Goddard Institute for Space Studies climate model. We evaluate a series of model simulations: (1) Exp N- aerosol direct radiative effects; (2) Exp C- Like Exp N but with aerosol effects on liquid-phase cumulus and stratus clouds; (3) Exp CN- Like Exp C but with model wind fields nudged to reanalysis data. Comparison between satellite-retrieved data and model simulations for June to August 2002, over the Atlantic Ocean indicate the following: a negative correlation between aerosol optical thickness (AOT) and cloud droplet effective radius (R{sub eff}) for all cases and satellite data, except for Exp N; a weak but negative correlation between liquid water path (LWP) and AOT for MODIS and CERES; and a robust increase in cloud cover with AOT for both MODIS and CERES. In all simulations, there is a positive correlation between AOT and both cloud cover and LWP (except in the case of LWP-AOT for Exp CN). The largest slopes are obtained for Exp N, implying that meteorological variability may be an important factor. The main fields associated with AOT variability in NCEP/MODIS data …
Date:
October 1, 2007
Creator:
Menon, S.; Del Genio, A.D.; Kaufman, Y.; Bennartz, R.; Koch, D.; Loeb, N. et al.
Object Type:
Article
System:
The UNT Digital Library
[Andraé Crouch and Choir]
Photograph of Andraé Crouch holding a sheet of paper and performing while a conductor directs their choir during the "Tramaine Hawkins' Four Decades in Gospel Music" event, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
October 20, 2007
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Andraé Crouch and Choir]
Photograph of Andraé Crouch performing on stage in front of a choir during the "Tramaine Hawkins' Four Decades in Gospel Music" event, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
October 20, 2007
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Andraé Crouch and Choir]
Photograph of Andraé Crouch performing on stage while a standing choir performs in the background during the "Tramaine Hawkins' Four Decades in Gospel Music" event, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
October 20, 2007
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Andraé Crouch and Choir]
Photograph of Andraé Crouch performing in front of a choir during the "Tramaine Hawkins' Four Decades in Gospel Music" event, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
October 20, 2007
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Andraé Crouch and Choir]
Photograph of Andraé Crouch performing on stage in front of a choir during the "Tramaine Hawkins' Four Decades in Gospel Music" event, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
October 20, 2007
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Andraé Crouch and Choir]
Photograph of Andraé Crouch performing on stage in front of an unidentified choir on stage during the "Tramaine Hawkins' Four Decades in Gospel Music" event, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
October 20, 2007
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library