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2010 IRON-SULFUR ENZYMES GORDON RESEARCH CONFERENCE, JUNE 6-11, 2010 (open access)

2010 IRON-SULFUR ENZYMES GORDON RESEARCH CONFERENCE, JUNE 6-11, 2010

Iron-sulfur (FeS) centers are essential for biology and inspirational in chemistry. These protein cofactors are broadly defined as active sites in which Fe is coordinated by S-donor ligands, often in combination with extra non-protein components, for example, additional metal atoms such as Mo and Ni, and soft ligands such as CN{sup -} and CO. Iron-sulfur centers are inherently air sensitive: they are found in essentially all organisms and it is possible that they were integral components of the earliest forms of life, well before oxygen (O{sub 2}) appeared. Proteins containing FeS cofactors perform a variety of biological functions ranging across electron transfer, acid-base catalysis, and sensing where they are agents for cell regulation through transcription (DNA) or translation (RNA). They are redox catalysts for radical-based reactions and the activation of H{sub 2}, N{sub 2} and CO{sub 2}, processes that offer scientific and economic challenges for industry. Iron-sulfur centers provide the focus for fundamental investigations of chemical bonding, spectroscopy and paramagnetism, and their functions have numerous implications for health and medicine and applications for technology, including renewable energy. The 2010 Iron-Sulfur Enzymes GRC will bring together researchers from different disciplines for in-depth discussions and presentations of the latest developments. There will …
Date: June 11, 2010
Creator: Gray, Nancy Ryan
Object Type: Article
System: The UNT Digital Library
2010 MULTIPHOTON PROCESSES GORDON RESEARCH CONFERENCE, JUNE 6-11, 2010, TILTON, NH (open access)

2010 MULTIPHOTON PROCESSES GORDON RESEARCH CONFERENCE, JUNE 6-11, 2010, TILTON, NH

The Gordon Research Conference on Multiphoton Processes will be held for the 15th time in 2010. The meeting continues to evolve as it embraces both the rapid technological and intellectual growth in the field as well as the multi-disciplinary expertise of the participants. This time the sessions will focus on: (1) Ultrafast coherent control; (2) Free-electron laser experiments and theory; (3) Generation of harmonics and attosecond pulses; (4) Ultrafast imaging; (5) Applications of very high intensity laser fields; (6) Strong-field processes in molecules and solids; (7) Attosecond science; and (8) Controlling light. The scientific program will blur traditional disciplinary boundaries as the presenters and discussion leaders involve chemists, physicists, and optical engineers, representing both experiment and theory. The broad range of expertise and different perspectives of attendees should provide a stimulating and unique environment for solving problems and developing new ideas in this rapidly evolving field.
Date: June 11, 2010
Creator: Gaarde, Mette
Object Type: Article
System: The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 112, No. 134, Ed. 1 Friday, June 11, 2010 (open access)

The Altus Times (Altus, Okla.), Vol. 112, No. 134, Ed. 1 Friday, June 11, 2010

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: June 11, 2010
Creator: Bush, Michael
Object Type: Newspaper
System: The Gateway to Oklahoma History
American Samoa: Performing a Risk Assessment Would Better Inform U.S. Agencies of the Risks Related to Acceptance of Certificates of Identity (open access)

American Samoa: Performing a Risk Assessment Would Better Inform U.S. Agencies of the Risks Related to Acceptance of Certificates of Identity

A letter report issued by the Government Accountability Office with an abstract that begins "American Samoa is a U.S. insular area that operates its customs and immigration programs according to its own laws and independent of the United States. As such, U.S. agencies, such as U.S. Customs and Border Protection, have no roles in operating the customs or immigration programs in American Samoa. U.S. officials have raised questions about how American Samoa operates its customs and immigration programs, and if this introduces any risks to the security of American Samoa or the rest of the United States. GAO was asked to review American Samoa's customs and immigration programs and this report discusses (1) the operations of American Samoa's customs and immigration programs, and (2) the extent to which U.S. and American Samoa agencies have identified potential risks in American Samoa's customs and immigration programs. GAO reviewed available statutes, regulations, policies, and procedures governing American Samoa and U.S. customs and immigration programs. GAO also visited American Samoa and interviewed U.S. and American Samoan officials to obtain insights."
Date: June 11, 2010
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 90, No. 116, Ed. 1 Friday, June 11, 2010 (open access)

The Baytown Sun (Baytown, Tex.), Vol. 90, No. 116, Ed. 1 Friday, June 11, 2010

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date: June 11, 2010
Creator: Halter, Janie
Object Type: Newspaper
System: The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 104, No. 47, Ed. 1 Friday, June 11, 2010 (open access)

The Boerne Star (Boerne, Tex.), Vol. 104, No. 47, Ed. 1 Friday, June 11, 2010

Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date: June 11, 2010
Creator: Cartwright, Brian & Velvin, Candace E.
Object Type: Newspaper
System: The Portal to Texas History
Commissioning of the LCLS LINAC (open access)

Commissioning of the LCLS LINAC

The Linac Coherent Light Source (LCLS) X-ray free electron laser project is currently under construction at the Stanford Linear Accelerator Center (SLAC). A new injector and upgrades to the existing accelerator were installed in two phases in 2006 and 2007. We report on the commissioning of the injector, the two new bunch compressors at 250MeV and 4.3 GeV, and transverse and longitudinal beam diagnostics up to the end of the existing linac at 13.6 GeV. The commissioning of the new transfer line from the end of the linac to the undulator is scheduled to start in November 2008 and for the undulator in March 2009 with first light to be expected in July 2009.
Date: June 11, 2010
Creator: Loos, H.; Akre, R.; Brachmann, A.; Decker, F. J.; Ding, Y.; Dowell, D. et al.
Object Type: Article
System: The UNT Digital Library
Compliance and Verification of Standards and Labelling Programs in China: Lessons Learned (open access)

Compliance and Verification of Standards and Labelling Programs in China: Lessons Learned

After implementing several energy efficiency standards and labels (30 products covered by MEPS, 50 products covered by voluntary labels and 19 products by mandatory labels), the China National Institute of Standardization (CNIS) is now implementing verification and compliance mechanism to ensure that the energy information of labeled products comply with the requirements of their labels. CNIS is doing so by organizing check testing on a random basis for room air-conditioners, refrigerators, motors, heaters, computer displays, ovens, and self -ballasted lamps. The purpose of the check testing is to understand the implementation of the Chinese labeling scheme and help local authorities establishing effective compliance mechanisms. In addition, to ensure robustness and consistency of testing results, CNIS has coordinated a round robin testing for room air conditioners. Eight laboratories (Chinese (6), Australian (1) and Japanese (1)) have been involved in the round robin testing and tests were performed on four sets of samples selected from manufacturer?s production line. This paper describes the methodology used in undertaking both check and round robin testing, provides analysis of testing results and reports on the findings. The analysis of both check and round robin testing demonstrated the benefits of a regularized verification and monitoring system for …
Date: June 11, 2010
Creator: Saheb, Yamina; Zhou, Nan; Fridley, David & Pierrot, André
Object Type: Article
System: The UNT Digital Library
Cosmic Ray Spectra in Nambu-Goldstone Dark Matter Models (open access)

Cosmic Ray Spectra in Nambu-Goldstone Dark Matter Models

We discuss the cosmic ray spectra in annihilating/decaying Nambu-Goldstone dark matter models. The recent observed positron/electron excesses at PAMELA and Fermi experiments are well fitted by the dark matter with a mass of 3TeV for the annihilating model, while with a mass of 6TeV for the decaying model. We also show that the Nambu-Goldstone dark matter models predict a distinctive gamma-ray spectrum in a certain parameter space.
Date: June 11, 2010
Creator: Ibe, Masahiro; Murayama, Hitoshi; Shirai, Satoshi & Yanagida, Tsutomu T.
Object Type: Article
System: The UNT Digital Library
CRS Issue Statement on Environmental Cleanup and Waste Management (open access)

CRS Issue Statement on Environmental Cleanup and Waste Management

This report discusses about environmental cleanup and waste management that involves the cleanup of contaminated sites under the super fund program that has generated continuing debate of various issues within Congress over the past several years.
Date: June 11, 2010
Creator: Ranseur, Jonathan L.
Object Type: Report
System: The UNT Digital Library
Dallas Voice (Dallas, Tex.), Vol. 27, No. 4, Ed. 1 Friday, June 11, 2010 (open access)

Dallas Voice (Dallas, Tex.), Vol. 27, No. 4, Ed. 1 Friday, June 11, 2010

Weekly newspaper from Dallas, Texas that includes local, state, and national news and advertising of interest to the Lesbian, Gay, Bisexual, and Transgender (LGBT) community.
Date: June 11, 2010
Creator: Nash, Tammye
Object Type: Newspaper
System: The UNT Digital Library
Depot Maintenance: Improved Strategic Planning Needed to Ensure That Navy Depots Can Meet Future Maintenance Requirements (open access)

Depot Maintenance: Improved Strategic Planning Needed to Ensure That Navy Depots Can Meet Future Maintenance Requirements

A letter report issued by the Government Accountability Office with an abstract that begins "The Navy's depots provide critical maintenance support to operations around the world. The Department of Defense's (DOD) increased reliance on the private sector for depot maintenance support coupled with downsizing led to a deterioration of depots' capabilities and cost increases. In 2007, the Office of the Secretary of Defense (OSD) directed each service to submit a depot maintenance strategic plan and provided direction for the content of those plans. The 2007 U.S. Navy Depot Maintenance Strategic Plan contained a separate plan for each of five functional areas and an executive summary. GAO used qualitative content analyses to determine the extent to which two of the plans address (1) elements of a results-oriented management framework and (2) OSD's direction for the plan's content. GAO examined the plans for Navy aviation (NAVAIR) and ships (NAVSEA), which account for 94 percent of Navy depot workload."
Date: June 11, 2010
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
Dual Selectivity Expressed in [2+2+1] Dynamic Clipping of Unsymmetrical [2]Catenanes (open access)

Dual Selectivity Expressed in [2+2+1] Dynamic Clipping of Unsymmetrical [2]Catenanes

A {pi}-templated dynamic [2+2+1] clipping protocol is established for the synthesis of [2]catenanes from two parts dialdehyde, two parts diamine and one part tetracationic cyclophane. It is further diversified for the selective formation of an unsymmetrical [2]catenane showing great translational selectivity by employing two different dialdehydes in a one-pot reaction. The dual selectivity and the dynamic nature are verified by {sup 1}H NMR spectroscopy, X-ray single crystal structural studies and exchange experiments.
Date: June 11, 2010
Creator: Liu, Yi
Object Type: Article
System: The UNT Digital Library

Effect of System and Air Contaminants on PEMFC Performance and Durability

This presentation summarizes Effect of System and Air Contaminants on PEMFC Performance and Durability.
Date: June 11, 2010
Creator: Dinh, H.
Object Type: Presentation
System: The UNT Digital Library
An Effective Theory of Dirac Dark Matter (open access)

An Effective Theory of Dirac Dark Matter

A stable Dirac fermion with four-fermion interactions to leptons suppressed by a scale {Lambda} {approx} 1 TeV is shown to provide a viable candidate for dark matter. The thermal relic abundance matches cosmology, while nuclear recoil direct detection bounds are automatically avoided in the absence of (large) couplings to quarks. The annihilation cross section in the early Universe is the same as the annihilation in our galactic neighborhood. This allows Dirac fermion dark matter to naturally explain the positron ratio excess observed by PAMELA with a minimal boost factor, given present astrophysical uncertainties. We use the Galprop program for propagation of signal and background; we discuss in detail the uncertainties resulting from the propagation parameters and, more importantly, the injected spectra. Fermi/GLAST has an opportunity to see a feature in the gamma-ray spectrum at the mass of the Dirac fermion. The excess observed by ATIC/PPB-BETS may also be explained with Dirac dark matter that is heavy. A supersymmetric model with a Dirac bino provides a viable UV model of the effective theory. The dominance of the leptonic operators, and thus the observation of an excess in positrons and not in anti-protons, is naturally explained by the large hypercharge and low …
Date: June 11, 2010
Creator: Harnik, Roni & Kribs, Graham D.
Object Type: Article
System: The UNT Digital Library
An Electron Fixed Target Experiment to Search for a New Vector Boson A' Decaying to e+e- (open access)

An Electron Fixed Target Experiment to Search for a New Vector Boson A' Decaying to e+e-

We describe an experiment to search for a new vector boson A' with weak coupling {alpha}' {approx}> 6 x 10{sup -8} {alpha} to electrons ({alpha} = e{sup 2}/4{pi}) in the mass range 65 MeV < m{sub A'} < 550 MeV. New vector bosons with such small couplings arise naturally from a small kinetic mixing of the 'dark photon' A' with the photon - one of the very few ways in which new forces can couple to the Standard Model - and have received considerable attention as an explanation of various dark matter related anomalies. A' bosons are produced by radiation off an electron beam, and could appear as narrow resonances with small production cross-section in the trident e{sup +}e{sup -} spectrum. We summarize the experimental approach described in a proposal submitted to Jefferson Laboratory's PAC35, PR-10-009. This experiment, the A' Experiment (APEX), uses the electron beam of the Continuous Electron Beam Accelerator Facility at Jefferson Laboratory (CEBAF) at energies of {approx} 1-4 GeV incident on 0.5-10% radiation length Tungsten wire mesh targets, and measures the resulting e{sup +}e{sup -} pairs to search for the A' using the High Resolution Spectrometer and the septum magnet in Hall A. With a {approx} …
Date: June 11, 2010
Creator: Essig, Rouven; Schuster, Philip; Toro, Natalia & Wojtsekhowski, Bogdan
Object Type: Article
System: The UNT Digital Library
Electronic Records Archive: Status Update on the National Archives and Records Administration's Fiscal Year 2010 Expenditure Plan (open access)

Electronic Records Archive: Status Update on the National Archives and Records Administration's Fiscal Year 2010 Expenditure Plan

A letter report issued by the Government Accountability Office with an abstract that begins "Since 2001, the National Archives and Records Administration (NARA) has been working to develop an electronic records archive (ERA) to preserve and provide access to massive volumes and all types of electronic records. NARA certified initial operating capability of the first two phases of ERA in June 2008 and December 2008 and plans to achieve full operating capability for the system by 2012. As required by the Consolidated Appropriations Act, NARA submitted an expenditure plan to Congress to support its request for fiscal year 2010 ERA funding. The act also requires that this plan meet six conditions, including a review by GAO. GAO's objectives in reviewing the fiscal year 2010 plan were to (1) determine whether the plan satisfies the legislative conditions, (2) determine the extent to which NARA has implemented prior GAO recommendations, and (3) provide any other observations on the plan or the ERA acquisition. To do this, GAO reviewed the expenditure plan and other agency documents and interviewed NARA officials."
Date: June 11, 2010
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
The Endangered Species Act (ESA) in the 111th Congress: Conflicting Values and Difficult Choices (open access)

The Endangered Species Act (ESA) in the 111th Congress: Conflicting Values and Difficult Choices

None
Date: June 11, 2010
Creator: Buck, Eugene H.; Corn, M. Lynne; Sheikh, Pervaze A.; Meltz, Robert & Alexander, Kristina
Object Type: Report
System: The UNT Digital Library
ENDF Cross Sections are not Uniquely Defined (open access)

ENDF Cross Sections are not Uniquely Defined

None
Date: June 11, 2010
Creator: Cullen, D E
Object Type: Report
System: The UNT Digital Library

Ensemble: 2010-06-11 – TMTA Ensemble

Access: Use of this item is restricted to the UNT Community
TMTA Ensembles performed at the UNT College of Music Recital Hall.
Date: June 11, 2010
Creator: unknown
Object Type: Sound
System: The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Friday, June 11, 2010 (open access)

The Express-Star (Chickasha, Okla.), Ed. 1 Friday, June 11, 2010

Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date: June 11, 2010
Creator: Wray, Kelly
Object Type: Newspaper
System: The Gateway to Oklahoma History
Federal Register, Volume 75, Number 112, June 11, 2010, Pages 33159-33488 (open access)

Federal Register, Volume 75, Number 112, June 11, 2010, Pages 33159-33488

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: June 11, 2010
Creator: United States. Office of the Federal Register.
Object Type: Journal/Magazine/Newsletter
System: The UNT Digital Library
Finding the Higgs boson of the standard model in the channel ZH → e<sup>+</sup>e<sup>-</sup>b$\bar{b}$ with the D0 detector at the Tevatron; Recherche du boson de Higgs du nideke standard dans le canal ZH → e<sup>+</sup>e<sup>-</sup>b$\bar{b}$ Avec le Detecteur DØ Aupres du Tevatron (open access)

Finding the Higgs boson of the standard model in the channel ZH → e<sup>+</sup>e<sup>-</sup>b$\bar{b}$ with the D0 detector at the Tevatron; Recherche du boson de Higgs du nideke standard dans le canal ZH → e<sup>+</sup>e<sup>-</sup>b$\bar{b}$ Avec le Detecteur DØ Aupres du Tevatron

The organization of this thesis consists of three main ideas: the first presents the theoretical framework and experimental, as well as objects used in the analysis and the second relates to the various work tasks of service that I performed on the calorimeter, and the third is the search for the Higgs boson in the channel ZH → e<sup>+</sup>e<sup>-</sup>b$\bar{b}$. Thus, this thesis has the following structure: Chapter 1 is an introduction to the standard model of particle physics and the Higgs mechanism; Chapter 2 is an overview of the complex and the acceleration of the Tevatron at Fermilab DØ detector; Chapter 3 is an introduction to physical objects used in this thesis; Chapter 4 presents the study made on correcting the energy measured in the calorimeter; Chapter 5 describes the study of certification of electrons in the calorimeter; Chapter 6 describes the study of certification of electrons in the intercryostat region of calorimeter; Chapter 7 Detailed analysis on the search for Higgs production in the channel ZH → e<sup>+</sup>e<sup>-</sup>b$\bar{b}$; and Chapter 8 presents the final results of the calculations of upper limits to the production cross section of the Higgs boson on a range of low masses.
Date: June 11, 2010
Creator: Calpas, Betty Constante
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Flavour-Violating Gluino and Squark Decays (open access)

Flavour-Violating Gluino and Squark Decays

We consider scenarios with large flavour violating entries in the squark mass matrices focusing on the mixing between second and third generation squarks. These entries govern both, flavour violating low energy observables on the one hand and squark and gluino decays on the other hand. We first discuss the constraints on the parameter space due to the recent data on B mesons from the B factories and Tevatron. We then consider flavour violating squark and gluino decays and show that they can still be typically of order 10% despite the stringent constraints from low energy data. Finally we briefly comment on the impact for searches and parameter determinations at future collider experiments such as the upcoming LHC or a future International Linear Collider.
Date: June 11, 2010
Creator: Hurth, Tobias & Porod, Werner
Object Type: Article
System: The UNT Digital Library