Degree Department

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Advanced Gated X-Ray Imagers for Experiments at the National Ignition Facility (open access)

Advanced Gated X-Ray Imagers for Experiments at the National Ignition Facility

None
Date: August 18, 2011
Creator: Glenn, S.; Bell, P.; Benedetti, L.; Bradley, D.; Celeste, J.; Heeter, R. et al.
Object Type: Article
System: The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 136, No. 13, Ed. 1 Thursday, August 18, 2011 (open access)

The Albany News (Albany, Tex.), Vol. 136, No. 13, Ed. 1 Thursday, August 18, 2011

Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date: August 18, 2011
Creator: Lucas, Melinda L.
Object Type: Newspaper
System: The Portal to Texas History
The Allen American (Allen, Tex.), Vol. 41, No. 51, Ed. 1 Thursday, August 18, 2011 (open access)

The Allen American (Allen, Tex.), Vol. 41, No. 51, Ed. 1 Thursday, August 18, 2011

Weekly newspaper from Allen, Texas that includes local, state, and national news along with advertising.
Date: August 18, 2011
Creator: Mann, Rick
Object Type: Newspaper
System: The Portal to Texas History
The Altus Times (Altus, Okla.), Vol. 112, No. 93, Ed. 1 Thursday, August 18, 2011 (open access)

The Altus Times (Altus, Okla.), Vol. 112, No. 93, Ed. 1 Thursday, August 18, 2011

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: August 18, 2011
Creator: Bush, Michael
Object Type: Newspaper
System: The Gateway to Oklahoma History
Alvarado Star (Alvarado, Tex.), Vol. 15, No. 49, Ed. 1 Thursday, August 18, 2011 (open access)

Alvarado Star (Alvarado, Tex.), Vol. 15, No. 49, Ed. 1 Thursday, August 18, 2011

Weekly newspaper from Alvarado, Texas that includes local, state, and national news along with advertising.
Date: August 18, 2011
Creator: McMichen, Candy
Object Type: Newspaper
System: The Portal to Texas History
Archer County News (Archer City, Tex.), No. 33, Ed. 1 Thursday, August 18, 2011 (open access)

Archer County News (Archer City, Tex.), No. 33, Ed. 1 Thursday, August 18, 2011

Weekly newspaper from Archer City, Texas that includes local, state, and national news along with advertising.
Date: August 18, 2011
Creator: Phillips, Barbara
Object Type: Newspaper
System: The Portal to Texas History
ARM Climate Research Facility Quarterly Value-Added Product Report Third Quarter: April 01–June 30, 2011 (open access)

ARM Climate Research Facility Quarterly Value-Added Product Report Third Quarter: April 01–June 30, 2011

The purpose of this report is to provide a concise status update for value-added products (VAP) implemented by the Atmospheric Radiation Measurement Climate Research Facility. The report is divided into the following sections: (1) new VAPs for which development has begun, (2) progress on existing VAPs, (3) future VAPs that have been recently approved, (4) other work that leads to a VAP, and (5) top requested VAPs from the archive
Date: August 18, 2011
Creator: Sivaraman, C
Object Type: Report
System: The UNT Digital Library
Army Corps Fiscal Challenges: Frequently Asked Questions (open access)

Army Corps Fiscal Challenges: Frequently Asked Questions

This report looks at issues in funding all of the Army Corps requests for the fiscal year. The Army Corps of Engineers is responsible for much of the federal water resources infrastructure in the United States. The Corps is faced with more demands for building and maintaining its projects than available federal funding allows. At issue for Congress is deciding how to tackle Corps fiscal challenges during a tight fiscal climate and under earmark moratoriums.
Date: August 18, 2011
Creator: Carter, Nicole T. & Stern, Charles V.
Object Type: Report
System: The UNT Digital Library
The Atacama Cosmology Telescope: Cosmology from Galaxy Clusters Detected via the Sunyaev-Zel'dovich Effect (open access)

The Atacama Cosmology Telescope: Cosmology from Galaxy Clusters Detected via the Sunyaev-Zel'dovich Effect

We present constraints on cosmological parameters based on a sample of Sunyaev-Zeldovich-selected galaxy clusters detected in a millimeter-wave survey by the Atacama Cosmology Telescope. The cluster sample used in this analysis consists of 9 optically-confirmed high-mass clusters comprising the high-significance end of the total cluster sample identified in 455 square degrees of sky surveyed during 2008 at 148GHz. We focus on the most massive systems to reduce the degeneracy between unknown cluster astrophysics and cosmology derived from SZ surveys. We describe the scaling relation between cluster mass and SZ signal with a 4-parameter fit. Marginalizing over the values of the parameters in this fit with conservative priors gives {sigma}{sub 8} = 0.851 {+-} 0.115 and w = -1.14 {+-} 0.35 for a spatially-flat wCDM cosmological model with WMAP 7-year priors on cosmological parameters. This gives a modest improvement in statistical uncertainty over WMAP 7-year constraints alone. Fixing the scaling relation between cluster mass and SZ signal to a fiducial relation obtained from numerical simulations and calibrated by X-ray observations, we find {sigma}{sub 8} = 0.821 {+-} 0.044 and w = -1.05 {+-} 0.20. These results are consistent with constraints from WMAP 7 plus baryon acoustic oscillations plus type Ia supernoava …
Date: August 18, 2011
Creator: Sehgal, Neelima; Trac, Hy; Acquaviva, Viviana; Ade, Peter A.R.; Aguirre, Paula; Amiri, Mandana et al.
Object Type: Article
System: The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 91, No. 162, Ed. 1 Thursday, August 18, 2011 (open access)

The Baytown Sun (Baytown, Tex.), Vol. 91, No. 162, Ed. 1 Thursday, August 18, 2011

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date: August 18, 2011
Creator: Gray, Janie
Object Type: Newspaper
System: The Portal to Texas History
Business Case for Energy Efficiency in Support of Climate Change Mitigation, Economic and Societal Benefits in China (open access)

Business Case for Energy Efficiency in Support of Climate Change Mitigation, Economic and Societal Benefits in China

This study seeks to provide policymakers and other stakeholders with actionable information towards a road map for reducing energy consumption cost-effectively. We focus on individual end use equipment types (hereafter referred to as appliance groups) that might be the subject of policies - such as labels, energy performance standards, and incentives - to affect market transformation in the short term, and on high-efficiency technology options that are available today. As the study title suggests, the high efficiency or Business Case scenario is constructed around a model of cost-effective efficiency improvement. Our analysis demonstrates that a significant reduction in energy consumption and emissions is achievable at net negative cost, that is, as a profitable investment for consumers. Net savings are calculated assuming no additional costs to energy consumption such as carbon taxes. Savings relative to the base case as calculated in this way is often referred to as 'economic savings potential'. Chinese energy demand has grown dramatically over the last few decades. While heavy industry still plays a dominant role in greenhouse gas emissions, demand from residential and commercial buildings has also seen rapid growth in percentage terms. In the residential sector this growth is driven by internal migration from the …
Date: August 18, 2011
Creator: McNeil, Michael A.; Bojda, Nicholas; Ke, Jing; Qin, Yining; de la Rue du Can, Stephane; Fridley, David et al.
Object Type: Report
System: The UNT Digital Library
The Celina Record (Celina, Tex.), Vol. 110, No. 17, Ed. 1 Thursday, August 18, 2011 (open access)

The Celina Record (Celina, Tex.), Vol. 110, No. 17, Ed. 1 Thursday, August 18, 2011

Weekly newspaper from Celina, Texas that includes local, state, and national news along with advertising.
Date: August 18, 2011
Creator: Mann, Rick
Object Type: Newspaper
System: The Portal to Texas History
The Colony Courier-Leader (The Colony, Tex.), Vol. 30, No. 29, Ed. 1 Thursday, August 18, 2011 (open access)

The Colony Courier-Leader (The Colony, Tex.), Vol. 30, No. 29, Ed. 1 Thursday, August 18, 2011

Weekly newspaper from The Colony, Texas that includes local, state, and national news along with advertising.
Date: August 18, 2011
Creator: Mann, Rick
Object Type: Newspaper
System: The Portal to Texas History
Cooper Review (Cooper, Tex.), Vol. 131, No. 33, Ed. 1 Thursday, August 18, 2011 (open access)

Cooper Review (Cooper, Tex.), Vol. 131, No. 33, Ed. 1 Thursday, August 18, 2011

Weekly newspaper from Cooper, Texas that includes local, state, and national news along with advertising.
Date: August 18, 2011
Creator: Roller, Cindy
Object Type: Newspaper
System: The Portal to Texas History
Crowley Star (Crowley, Tex.), Vol. 25, No. 15, Ed. 1 Thursday, August 18, 2011 (open access)

Crowley Star (Crowley, Tex.), Vol. 25, No. 15, Ed. 1 Thursday, August 18, 2011

Weekly newspaper from Crowley, Texas that includes local, state, and national news along with advertising.
Date: August 18, 2011
Creator: Sorter, David
Object Type: Newspaper
System: The Portal to Texas History
Current Trends in Gamma Ray Detection for Radiological Emergency Response (open access)

Current Trends in Gamma Ray Detection for Radiological Emergency Response

Passive and active detection of gamma rays from shielded radioactive materials, including special nuclear materials, is an important task for any radiological emergency response organization. This article reports on the current trends and status of gamma radiation detection objectives and measurement techniques as applied to nonproliferation and radiological emergencies.
Date: August 18, 2011
Creator: Mukhopadhyay, S., Guss, P., Maurer, R.
Object Type: Article
System: The UNT Digital Library
Descriptor-Based Analysis Applied to HCN Synthesis from NH3 and CH4 (open access)

Descriptor-Based Analysis Applied to HCN Synthesis from NH3 and CH4

The design of solid metal catalysts using theoretical methods has been a long-standing goal in heterogeneous catalysis. Recent developments in methodology and computer technology as well as the establishment of a descriptor-based approach for the analysis of reaction mechanisms and trends across the periodic table allow for the fast screening for new catalytic materials and have lead to first examples of computational discoveries of new materials. The underlying principles of the descriptor-based approach are the existence of relations between the surface electronic structure, adsorption energies and activation barriers that result in volcano-shaped activity plots as function of simple descriptors, such as atomic binding energies or the d-band center. Linear scaling relations have been established between the adsorption energies of hydrogen-containing molecules such as CH{sub x}, NH{sub x}, OH{sub x} and SH{sub x} and the C, N O and S adsorption energies on transition-metal surfaces. Transition-state energies have also been shown to scale linearly with adsorption energies in a similar fashion. Recently, a single transition state scaling relation has been identified for a large number of C-C, C-O, C-N, N-O, N-N, and O-O coupling reactions. The scaling relations provide a powerful tool for the investigation of reaction mechanisms and the prediction …
Date: August 18, 2011
Creator: Grabow, L
Object Type: Article
System: The UNT Digital Library
The Dublin Citizen (Dublin, Tex.), Vol. 21, No. 50, Ed. 1 Thursday, August 18, 2011 (open access)

The Dublin Citizen (Dublin, Tex.), Vol. 21, No. 50, Ed. 1 Thursday, August 18, 2011

Weekly newspaper from Dublin, Texas that includes local, state, and national news along with advertising.
Date: August 18, 2011
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Effect of 3D Polarization profiles on polarization measurements and colliding beam experiments (open access)

Effect of 3D Polarization profiles on polarization measurements and colliding beam experiments

The development of polarization profiles are the primary reason for the loss of average polarization. Polarization profiles have been parametrized with a Gaussian distribution. We derive the effect of 3-dimensional polarization profiles on the measured polarization in polarimeters, as well as the observed polarization and the figure of merit in single and double spin experiments. Examples from RHIC are provided. The Relativistic Heavy Ion Collider (RHIC) is the only collider of spin polarized protons. During beam acceleration and storage profiles of the polarization P develop, which affect the polarization measured in a polarimeter, and the polarization and figure of merit (FOM) in colliding beam experiments. We calculate these for profiles in all dimensions, and give examples for RHIC. Like in RHIC we call the two colliding beams Blue and Yellow. We use the overbar to designate intensity-weighted averages in polarimeters (e.g. {bar P}), and angle brackets to designate luminosity-weighted averages in colliding beam experiments (e.g. <P>).
Date: August 18, 2011
Creator: Fischer, W. & Bazilevsky, A.
Object Type: Report
System: The UNT Digital Library
EFFECTS OF NITRIC ACID ON CRITICALITY SAFETY ANALYSIS (open access)

EFFECTS OF NITRIC ACID ON CRITICALITY SAFETY ANALYSIS

As nitric acid molarity is increased, there are two competing phenomena affecting the reactivity of the system. First, there is interaction between each of the 10 wells in the basket-like insert. As the molarity of the nitric acid solution is increased (it moves from 100% water to 100% HNO{sub 3}), the hydrogen atom density decreases by about 80%. However, it remains a relatively efficient moderator. The moderating ratio of nitric acid is about 90% that of water. As the media between the wells is changed from 100% water to 100% nitric acid, the density of the media increases by 50%. A higher density typically leads to a better reflector. However, when the macroscopic scattering cross sections are considered, nitric acid is a much worse reflector than water. The effectiveness of nitric acid as a reflector is about 40% that of water. Since the media between the wells become a worse reflector and still remains an effective moderator, interaction between the wells increases. This phenomenon will cause reactivity to increase as nitric acid molarity increases. The seond phenomenon is due to the moderating ratio changing in the high concentration fissile-nitric acid solution in the 10 wells. Since the wells contain relatively …
Date: August 18, 2011
Creator: Williamson, B.
Object Type: Article
System: The UNT Digital Library
Electra Star-News (Electra, Tex.), Vol. 105, No. 1, Ed. 1 Thursday, August 18, 2011 (open access)

Electra Star-News (Electra, Tex.), Vol. 105, No. 1, Ed. 1 Thursday, August 18, 2011

Weekly newspaper from Electra, Texas that includes local, state, and national news along with advertising.
Date: August 18, 2011
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
The Express-Star (Chickasha, Okla.), Ed. 1 Thursday, August 18, 2011 (open access)

The Express-Star (Chickasha, Okla.), Ed. 1 Thursday, August 18, 2011

Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date: August 18, 2011
Creator: DeSilver, Debi
Object Type: Newspaper
System: The Gateway to Oklahoma History
Federal Register, Volume 76, Number 160, August 18, 2011, Pages 51245-51868 (open access)

Federal Register, Volume 76, Number 160, August 18, 2011, Pages 51245-51868

Daily publication of the U.S. Office of the Federal Register contains rules and regulations, proposed legislation and rule changes, and other notices, including "Presidential proclamations and Executive Orders, Federal agency documents having general applicability and legal effect, documents required to be published by act of Congress, and other Federal agency documents of public interest" (p. ii). Table of Contents starts on page iii.
Date: August 18, 2011
Creator: United States. Office of the Federal Register.
Object Type: Journal/Magazine/Newsletter
System: The UNT Digital Library
Garber Billings News (Garber, Okla.), Vol. 111, No. 42, Ed. 1 Thursday, August 18, 2011 (open access)

Garber Billings News (Garber, Okla.), Vol. 111, No. 42, Ed. 1 Thursday, August 18, 2011

Weekly newspaper from Garber, Oklahoma that includes local, state, and national news along with advertising.
Date: August 18, 2011
Creator: Hogan, Vickie Lee
Object Type: Newspaper
System: The Gateway to Oklahoma History