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Brady Standard-Herald and Heart of Texas News (Brady, Tex.), Ed. 1 Wednesday, June 23, 2010
Weekly newspaper from Brady, Texas that includes local, state, and national news along with advertising.
Date:
June 23, 2010
Creator:
Stewart, James E.
Object Type:
Newspaper
System:
The Portal to Texas History
Briefing on the Results of GAO's Audit of the Fiscal Years 2009 and 2008 U.S. Government's Consolidated Financial Statements
Correspondence issued by the Government Accountability Office with an abstract that begins "This letter highlights the results of the Government Accountability Office (GAO) audit of the Consolidated Financial Statements of the U.S. Government (CFS) for fiscal years 2009 and 2008. GAO is required by the Government Management Reform Act of 1994 to perform an annual audit of the CFS."
Date:
March 23, 2010
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Broadband Infrastructure Programs in the American Recovery and Reinvestment Act
This report discusses the Implementation and issues related to Broadband Infrastructure Programs in the American Recovery and Reinvestment Act of 2009.
Date:
February 23, 2010
Creator:
Kruger, Lennard G.
Object Type:
Report
System:
The UNT Digital Library
Broadband Internet Access and the Digital Divide: Federal Assistance Programs
Some policymakers, believing that disparities in broadband access across American society could have adverse economic and social consequences on those left behind, assert that the federal government should play a more active role to avoid a "digital divide" in broadband access. One approach is for the federal government to provide financial assistance to support broadband deployment in underserved areas. Others, however, believe that federal assistance for broadband deployment is not appropriate. Some opponents question the reality of the "digital divide," and argue that federal intervention in the broadband marketplace would be premature and, in some cases, counterproductive.
Date:
September 23, 2010
Creator:
Kruger, Lennard G. & Gilroy, Angele A.
Object Type:
Report
System:
The UNT Digital Library
Broadband Loan and Grant Programs in the USDA’s Rural Utilities Service
None
Date:
July 23, 2010
Creator:
Kruger, Lennard G.
Object Type:
Report
System:
The UNT Digital Library
Bunch Length Effects in the Beam-Beam Compensation With an Electron Lens
N/A
Date:
May 23, 2010
Creator:
Fischer, W.
Object Type:
Article
System:
The UNT Digital Library
The Canadian Record (Canadian, Tex.), Vol. 120, No. 38, Ed. 1 Thursday, September 23, 2010
Weekly newspaper from Canadian, Texas that includes local, state and national news along with some advertising.
Date:
September 23, 2010
Creator:
Brown, Laurie Ezzell
Object Type:
Newspaper
System:
The Portal to Texas History
The Canadian Record (Canadian, Tex.), Vol. 120, No. 51, Ed. 1 Thursday, December 23, 2010
Weekly newspaper from Canadian, Texas that includes local, state and national news along with some advertising.
Date:
December 23, 2010
Creator:
Brown, Laurie Ezzell
Object Type:
Newspaper
System:
The Portal to Texas History
Carboxysomal carbonic anhydrases: Structure and role in microbial CO2 fixation
Cyanobacteria and some chemoautotrophic bacteria are able to grow in environments with limiting CO2 concentrations by employing a CO2-concentrating mechanism (CCM) that allows them to accumulate inorganic carbon in their cytoplasm to concentrations several orders of magnitude higher than that on the outside. The final step of this process takes place in polyhedral protein microcompartments known as carboxysomes, which contain the majority of the CO2-fixing enzyme, RubisCO. The efficiency of CO2 fixation by the sequestered RubisCO is enhanced by co-localization with a specialized carbonic anhydrase that catalyzes dehydration of the cytoplasmic bicarbonate and ensures saturation of RubisCO with its substrate, CO2. There are two genetically distinct carboxysome types that differ in their protein composition and in the carbonic anhydrase(s) they employ. Here we review the existing information concerning the genomics, structure and enzymology of these uniquely adapted carbonic anhydrases, which are of fundamental importance in the global carbon cycle.
Date:
June 23, 2010
Creator:
Cannon, Gordon C.; Heinhorst, Sabine & Kerfeld, Cheryl A.
Object Type:
Article
System:
The UNT Digital Library
The Carboxysome and Other Bacterial Microcompartments
- Carboxysomes are part of the carbon concentrating mechanism in cyanobacteria and chemoautotrophs. - Carboxysomes are a subclass of bacterial microcompartments (BMCs); BMCs can encapsulate a range of metabolic processes. - Like some viral particles, the carboxysome can be modeled as an icosahedron-in its case, having 4,000-5,000 hexameric shell subunits and 12 surface pentamers to generate curvature. - The threefold axis of symmetry of the CsoS1D protein in carboxysomes forms a pore that can open and close, allowing for selective diffusion. - Genetic modules encoding BMC shell proteins and the enzymes that they encapsulate are horizontally transferable, suggesting they enable bacteria to adapt to diverse environments.
Date:
June 23, 2010
Creator:
Kerfeld, Cheryl A.; Greenleaf, William B. & Kinney, James N.
Object Type:
Article
System:
The UNT Digital Library
CesrTA Retarding Field Analyzer Modeling Results
Retarding field analyzers (RFAs) provide an effective measure of the local electron cloud density and energy distribution. Proper interpretation of RFA data can yield information about the behavior of the cloud, as well as the surface properties of the instrumented vacuum chamber. However, due to the complex interaction of the cloud with the RFA itself, understanding these measurements can be nontrivial. This paper examines different methods for interpreting RFA data via cloud simulation programs. Techniques include postprocessing the output of a simulation code to predict the RFA response; and incorporating an RFA model into the cloud modeling program itself.
Date:
May 23, 2010
Creator:
Calvey, J. R.; Celata, C. M.; Crittenden, J. A.; Dugan, G. F.; Greenwald, S.; Leong, Z. et al.
Object Type:
Article
System:
The UNT Digital Library
Changes in Airport Passenger Screening Technologies and Procedures: Frequently Asked Questions
This report addresses the frequently asked questions related to the new technologies and procedures deployed for screening passengers at airport checkpoints.
Date:
November 23, 2010
Creator:
Elias, Bart
Object Type:
Report
System:
The UNT Digital Library
Characteristics of Knock in Hydrogen-Oxygen-Argon SI Engine
A promising approach for improving the efficiency of internal combustion engines is to employ a working fluid with a high specific heat ratio such as the noble gas argon. Moreover, all harmful emissions are eliminated when the intake charge is composed of oxygen, nonreactive argon, and hydrogen fuel. Previous research demonstrated indicated thermal efficiencies greater than 45% at 5.5 compression ratio in engines operating with hydrogen, oxygen, and argon. However, knock limits spark advance and increasing the efficiency further. Conditions under which knock occurs in such engines differs from typical gasoline fueled engines. In-cylinder temperatures using hydrogen-oxygen-argon are higher due to the high specific heat ratio and pressures are lower because of the low compression ratio. Better understanding of knock under these conditions can lead to operating strategies that inhibit knock and allow operation closer to the knock limit. In this work we compare knock with a hydrogen, oxygen, and argon mixture to that of air-gasoline mixtures in a variable compression ratio cooperative fuels research (CFR) engine. The focus is on stability of knocking phenomena, as well as, amplitude and frequency of the resulting pressure waves.
Date:
February 23, 2010
Creator:
Killingsworth, Nick J.; Rapp, Vi H.; Flowers, Daniel L.; Aceves, Salvador M.; Chen, J-Y. & Dibble, Robert
Object Type:
Article
System:
The UNT Digital Library
CHARACTERIZATION OF CYCLED SPHERICAL RESORCINOL-FORMALDEHYDE ION EXCHANGE RESIN
This report presents characterization data for two spherical resorcinol-formaldehyde (sRF) resin beds that had processed cesium in non-radioactive and radioactive cycles. All column cycle operations for the resin beds including loading, displacements, elution, regeneration, breakthroughs, and solution analyses are reported in Nash and Duignan, 2009a. That report covered four ion exchange (IX) campaigns using the two {approx}11 mL beds in columns in a lead-lag arrangement. The first two campaigns used Savannah River Site (SRS) Tank 2F nonradioactive simulant while the latter two were fed with actual dissolved salt in the Savannah River National Laboratory (SRNL) Shielded Cells. Both radioactive cycles ran to cesium breakthrough of the lead column. The resin beds saw in excess of 400 bed volumes of feed in each cycle. Resin disposal plans in tank farm processing depend on characterizations of resin used with actual tank feed. Following a final 30 bed volume (BV) elution with nitric acid, the resin beds were found to contain detectable chromium, barium, boron, aluminum, iron, sodium, sulfur, plutonium, cesium, and mercury. Resin affinity for plutonium is important in criticality safety considerations. Cesium-137 was found to be less than 10E+7 dpm/g of resin, similar to past work with sRF resin. Sulfur levels …
Date:
February 23, 2010
Creator:
Nash, C. & Duignan, M.
Object Type:
Report
System:
The UNT Digital Library
Characterization of Glass-Like Fragments from the 3714 Building
This report describes characterization of a sample obtained from the 3714 building in the 300 Area. Characterization of this unknown material was required for the demonolition activities in the 300 Area. The object of the study was to dertermine the nature of the material, composition, possible structure, evidence for hazards components. The green material is a sodium alumino-silicate glass. This conclusion is based on the composition provided by SEM-EDS, and the images that suggest a glass-like morphology. Further analysis with Ramin and/or infrared could be used to determine the presence of any organics.
Date:
February 23, 2010
Creator:
Buck, Edgar C.
Object Type:
Report
System:
The UNT Digital Library
Characterizing Shading Losses on Partially Shaded PV Systems
Presentation on shaded PV power loss, practical issues with modeling shaded PV, and methods of implementing partially shaded PV modeling.
Date:
September 23, 2010
Creator:
Deline, C.
Object Type:
Presentation
System:
The UNT Digital Library
Chemical Facility Security: Reauthorization, Policy Issues, and Options for Congress
This report provides a brief overview of the existing statutory authority and the regulation implementing this authority. It describes several policy issues raised in previous debates regarding chemical facility security and identifies policy options that might resolve components of these issues. Finally, legislation introduced in the 111th Congress is discussed.
Date:
December 23, 2010
Creator:
Shea, Dana A.
Object Type:
Report
System:
The UNT Digital Library
Chemical Imaging of the Cell Membrane by NanoSIMS
The existence of lipid microdomains and their role in cell membrane organization are currently topics of great interest and controversy. The cell membrane is composed of a lipid bilayer with embedded proteins that can flow along the two-dimensional surface defined by the membrane. Microdomains, known as lipid rafts, are believed to play a central role in organizing this fluid system, enabling the cell membrane to carry out essential cellular processes, including protein recruitment and signal transduction. Lipid rafts are also implicated in cell invasion by pathogens, as in the case of the HIV. Therefore, understanding the role of lipid rafts in cell membrane organization not only has broad scientific implications, but also has practical implications for medical therapies. One of the major limitations on lipid organization research has been the inability to directly analyze lipid composition without introducing artifacts and at the relevant length-scales of tens to hundreds of nanometers. Fluorescence microscopy is widely used due to its sensitivity and specificity to the labeled species, but only the labeled components can be observed, fluorophores can alter the behavior of the lipids they label, and the length scales relevant to imaging cell membrane domains are between that probed by fluorescence resonance …
Date:
February 23, 2010
Creator:
Weber, P K; Kraft, M L; Frisz, J F; Carpenter, K J & Hutcheon, I D
Object Type:
Article
System:
The UNT Digital Library
Cherokeean Herald (Rusk, Tex.), Vol. 161, No. 18, Ed. 1 Wednesday, June 23, 2010
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
June 23, 2010
Creator:
Whitehead, Marie
Object Type:
Newspaper
System:
The Portal to Texas History
China Naval Modernization: Implications for U.S. Navy Capabilities—Background and Issues for Congress
This report focuses on the potential implications of China’s naval modernization for future required U.S. Navy capabilities.
Date:
December 23, 2010
Creator:
O'Rourke, Ronald
Object Type:
Report
System:
The UNT Digital Library
China's Sovereign Wealth Fund: Developments and Policy Implications
China's ruling executive body, the State Council, established the China Investment Corporation (CIC), a sovereign wealth fund, in September 2007 to invest $200 billion of China's then $1.4 trillion in foreign exchange reserves. Congress and financial analysts raised concerns about the CIC after its creation, partly because it was a comparatively large sovereign wealth fund, partly because it was government-owned, and partly because it reported directly to the State Council. These concerns raise question about U.S. policies on inward foreign direct investment (FDI) and the global competitiveness of U.S. financial institutions. Certain commentators suggest that more should be done to protect the United States from China's rising role in international capital markets.
Date:
September 23, 2010
Creator:
Martin, Michael F.
Object Type:
Report
System:
The UNT Digital Library
Chiral Steering of Molecular Organization in the Limit of Weak Adsorbate-Substrate Interactions: Enantiopure and Racemic Tartaric Acid Domains on Ag(111)
Article on the chiral steering of molecular organization in the limit of weak adsorbate-substrate interactions.
Date:
April 23, 2010
Creator:
Santagata, Nancy M.; Lakhani, Amit M.; Davis, Bryce F.; Luo, Pengshun; Buongiorno Nardelli, Marco & Pearl, Thomas P.
Object Type:
Article
System:
The UNT Digital Library
Chromaticity Feedback at RHIC
Chromaticity feedback during the ramp to high beam energies has been demonstrated in the Relativistic Heavy Ion Collider (RHIC). In this report we review the feedback design and measurement technique. Commissioning experiences including interaction with existing tune and coupling feedback are presented together with supporting experimental data.
Date:
May 23, 2010
Creator:
Marusic, A.; Minty, M. & Tepikian, S.
Object Type:
Article
System:
The UNT Digital Library
Clean Water Act: A Summary of the Law
The principal law governing pollution of the nation's surface waters is the Federal Water Pollution Control Act, or Clean Water Act. Originally enacted in 1948, it was totally revised by amendments in 1972 that gave the act its current shape. The 1972 legislation spelled out ambitious programs, for water quality improvement that have since been expanded and are still being implemented by industries and municipalities.
Date:
April 23, 2010
Creator:
Copeland, Claudia
Object Type:
Report
System:
The UNT Digital Library