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Dry Deposition Velocity Estimation for the Savannah River Site: Part 1 – Parametric Analysis
Values for the dry deposition velocity of airborne particles were estimated with the GENII Version 2.10 computer code for the Savannah River site using assumptions about surface roughness parameters and particle size and density. Use of the GENII code is recommended by the U.S. Department of Energy for this purpose. Meteorological conditions evaluated include atmospheric stability classes D, E, and F and wind speeds of 0.5, 1.0, 1.5, and 3.0 m/s. Local surface roughness values ranging from 0.03 to 2 meters were evaluated. Particles with mass mean diameters of 1, 5, and 10 microns and densities of 1, 3, and 5 g/cm3 were evaluated.
Date:
January 16, 2012
Creator:
Napier, Bruce A.
Object Type:
Report
System:
The UNT Digital Library
The Observer III (Lexington, Okla.), Vol. 2, No. 2, Ed. 1 Monday, January 16, 2012
Semi-monthly newspaper from Lexington, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 16, 2012
Creator:
Murphy, Lou Ann
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Oral History Interview with Manuel E. Quijas, January 16, 2012
The National Museum of the Pacific War presents an oral interview with Manuel E. Quijas. Quijas grew up in the Rio Grande Valley and was drafted into the the Army in July, 1942. He describes training at Camp Wolters, Texas. At Fort Hood, Quijas was assigned to the 820th Tank Destroyer Battalion. Quijas trained as a driver for a half-track. Upon completion of training, Quijas and his unit were shipped to England where they immediately left for France in October, 1944. Eventually, his unit moved into Belgium and fought in the Battle of the Bulge. Quijas describes retreating and disabling his half-track and its weapons. QUijas speaks of retraining in medium tanks and taking them across the Rhine River into Germany. When the war ended in Europe, Quijas shipped back to the US and was discharged in November, 1945. Quijas used the GI Bill to finish high school.
Date:
January 16, 2012
Creator:
Quijas, Manuel E.
Object Type:
Text
System:
The Portal to Texas History
Oral History Interview with Manuel E. Quijas, January 16, 2012
The National Museum of the Pacific War presents an oral interview with Manuel E. Quijas. He discusses his childhood growing up during the Great Depression and how he was drafted into the US Army. He describes his experiences during bootcamp and fighting in Europe and in the Battle of the Bulge during World War Two.
Date:
January 16, 2012
Creator:
Quijas, Manuel E. & Misenhimer, Richard
Object Type:
Sound
System:
The Portal to Texas History
Oral History Interview with Manuel E. Quijas, January 16, 2012
The National Museum of the Pacific War presents an oral interview with Manuel E. Quijas. He discusses his childhood growing up during the Great Depression and how he was drafted into the US Army. He describes his experiences during bootcamp and fighting in Europe and in the Battle of the Bulge during World War Two.
Date:
January 16, 2012
Creator:
Quijas, Manuel E. & Misenhimer, Richard
Object Type:
Text
System:
The Portal to Texas History
Sweetwater Reporter (Sweetwater, Tex.), Vol. 113, No. 360, Ed. 1 Monday, January 16, 2012
Daily newspaper from Sweetwater, Texas that includes local, state, and national news along with advertising.
Date:
January 16, 2012
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Texas Fashion Collection 2011 Annual Report
UNT Texas Fashion Collection annual report created by TFC director Myra Walker outlining staffing updates, outreach activities, and happenings during the 2011 calendar year.
Date:
January 16, 2012
Creator:
Walker, Myra
Object Type:
Text
System:
The UNT Digital Library
AdS/QCD and Applications of Light-Front Holography
Light-Front Holography leads to a rigorous connection between hadronic amplitudes in a higher dimensional anti-de Sitter (AdS) space and frame-independent light-front wavefunctions of hadrons in 3 + 1 physical space-time, thus providing a compelling physical interpretation of the AdS/CFT correspondence principle and AdS/QCD, a useful framework which describes the correspondence between theories in a modified AdS5 background and confining field theories in physical space-time. To a first semiclassical approximation, where quantum loops and quark masses are not included, this approach leads to a single-variable light-front Schroedinger equation which determines the eigenspectrum and the light-front wavefunctions of hadrons for general spin and orbital angular momentum. The coordinate z in AdS space is uniquely identified with a Lorentz-invariant coordinate {zeta} which measures the separation of the constituents within a hadron at equal light-front time. The internal structure of hadrons is explicitly introduced and the angular momentum of the constituents plays a key role. We give an overview of the light-front holographic approach to strongly coupled QCD. In particular, we study the photon-to-meson transition form factors (TFFs) F{sub M{gamma}}(Q{sup 2}) for {gamma}{gamma}* {yields} M using light-front holographic methods. The results for the TFFs for the {eta} and {eta}' mesons are also presented. Some …
Date:
February 16, 2012
Creator:
Brodsky, Stanley J.; /SLAC /Southern Denmark U., CP3-Origins; Cao, Fu-Guang; U., /Massey; de Teramond, Guy F. & U., /Costa Rica
Object Type:
Article
System:
The UNT Digital Library
AdS/QCD, Light-Front Holography, and Sublimated Gluons
The gauge/gravity duality leads to a simple analytical and phenomenologically compelling nonperturbative approximation to the full light-front QCD Hamiltonian - 'Light-Front Holography', which provides a Lorentz-invariant first-approximation to QCD, and successfully describes the spectroscopy of light-quark meson and baryons, their elastic and transition form factors, and other hadronic properties. The bound-state Schroedinger and Dirac equations of the soft-wall AdS/QCD model predict linear Regge trajectories which have the same slope in orbital angular momentum L and radial quantum number n for both mesons and baryons. Light-front holography connects the fifth-dimensional coordinate of AdS space z to an invariant impact separation variable {zeta} in 3+1 space at fixed light-front time. A key feature is the determination of the frame-independent light-front wavefunctions of hadrons - the relativistic analogs of the Schroedinger wavefunctions of atomic physics which allow one to compute form factors, transversity distributions, spin properties of the valence quarks, jet hadronization, and other hadronic observables. One thus obtains a one-parameter color-confining model for hadron physics at the amplitude level. AdS/QCD also predicts the form of the non-perturbative effective coupling {alpha}{sub s}{sup AdS} (Q) and its {beta}-function with an infrared fixed point which agrees with the effective coupling a{sub g1} (Q{sup 2}) extracted …
Date:
February 16, 2012
Creator:
Brodsky, Stanley J. & de Teramond, Guy F.
Object Type:
Article
System:
The UNT Digital Library
ADVANCED COMPOSITE WIND TURBINE BLADE DESIGN BASED ON DURABILITY AND DAMAGE TOLERANCE
The objective of the program was to demonstrate and verify Certification-by-Analysis (CBA) capability for wind turbine blades made from advanced lightweight composite materials. The approach integrated durability and damage tolerance analysis with robust design and virtual testing capabilities to deliver superior, durable, low weight, low cost, long life, and reliable wind blade design. The GENOA durability and life prediction software suite was be used as the primary simulation tool. First, a micromechanics-based computational approach was used to assess the durability of composite laminates with ply drop features commonly used in wind turbine applications. Ply drops occur in composite joints and closures of wind turbine blades to reduce skin thicknesses along the blade span. They increase localized stress concentration, which may cause premature delamination failure in composite and reduced fatigue service life. Durability and damage tolerance (D&DT) were evaluated utilizing a multi-scale micro-macro progressive failure analysis (PFA) technique. PFA is finite element based and is capable of detecting all stages of material damage including initiation and propagation of delamination. It assesses multiple failure criteria and includes the effects of manufacturing anomalies (i.e., void, fiber waviness). Two different approaches have been used within PFA. The first approach is Virtual Crack Closure Technique …
Date:
February 16, 2012
Creator:
Abumeri, Galib & Abdi, Frank
Object Type:
Report
System:
The UNT Digital Library
Air Traffic Control Modernization: Management Challenges Associated with Program Costs and Schedules Could Hinder NextGen Implementation
A letter report issued by the Government Accountability Office with an abstract that begins "In a review of 30 major ATC acquisition programs, all of which will contribute to the transition to NextGen, GAO found that costs for 11 of the 30 programs have increased from their initial estimates by a total of $4.2 billion and 15 programs experienced delays. The 11 acquisitions that experienced cost increases account for over 60 percent of FAAs total acquisition costs ($11 billion of $17.7 billion) for the 30 programs. The 15 acquisitions that experienced schedule delays, of which 10 also had cost increases, ranged from 2 months to more than 14 years and averaged 48 months."
Date:
February 16, 2012
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 136, No. 39, Ed. 1 Thursday, February 16, 2012
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
February 16, 2012
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
The Allen American (Allen, Tex.), Vol. 42, No. 25, Ed. 1 Thursday, February 16, 2012
Weekly newspaper from Allen, Texas that includes local, state, and national news along with advertising.
Date:
February 16, 2012
Creator:
Mann, Rick
Object Type:
Newspaper
System:
The Portal to Texas History
The Altus Times (Altus, Okla.), Vol. 112, No. 222, Ed. 1 Thursday, February 16, 2012
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 16, 2012
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Alvarado Star (Alvarado, Tex.), Vol. 16, No. 22, Ed. 1 Thursday, February 16, 2012
Weekly newspaper from Alvarado, Texas that includes local, state, and national news along with advertising.
Date:
February 16, 2012
Creator:
McMichen, Candy
Object Type:
Newspaper
System:
The Portal to Texas History
Analytic Coleman-de Luccia Geometries
We present the necessary and sufficient conditions for a Euclidean scale factor to be a solution of the Coleman-de Luccia equations for some analytic potential V ({psi}), with a Lorentzian continuation describing the growth of a bubble of lower-energy vacuum surrounded by higher-energy vacuum. We then give a set of explicit examples that satisfy the conditions and thus are closed-form analytic examples of Coleman-de Luccia geometries.
Date:
February 16, 2012
Creator:
Dong, Xi; /Stanford U., ITP /Stanford U., Phys. Dept. /SLAC; Harlow, Daniel & /Stanford U., ITP /Stanford U., Phys. Dept.
Object Type:
Article
System:
The UNT Digital Library
Archer County News (Archer City, Tex.), Vol. 104, No. 7, Ed. 1 Thursday, February 16, 2012
Weekly newspaper from Archer City, Texas that includes local, state and national news along with advertising.
Date:
February 16, 2012
Creator:
Phillips, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Atoms in Flight: The Remarkable Connections between Atomic and Hadronic Physics
Atomic physics and hadron physics are both based on Yang Mills gauge theory; in fact, quantum electrodynamics can be regarded as the zero-color limit of quantum chromodynamics. I review a number of areas where the techniques of atomic physics provide important insight into the theory of hadrons in QCD. For example, the Dirac-Coulomb equation, which predicts the spectroscopy and structure of hydrogenic atoms, has an analog in hadron physics in the form of light-front relativistic equations of motion which give a remarkable first approximation to the spectroscopy, dynamics, and structure of light hadrons. The renormalization scale for the running coupling, which is unambiguously set in QED, leads to a method for setting the renormalization scale in QCD. The production of atoms in flight provides a method for computing the formation of hadrons at the amplitude level. Conversely, many techniques which have been developed for hadron physics, such as scaling laws, evolution equations, and light-front quantization have equal utility for atomic physics, especially in the relativistic domain. I also present a new perspective for understanding the contributions to the cosmological constant from QED and QCD.
Date:
February 16, 2012
Creator:
Brodsky, Stanley J.
Object Type:
Article
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 92, No. 33, Ed. 1 Thursday, February 16, 2012
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
February 16, 2012
Creator:
Yanelli, Adam
Object Type:
Newspaper
System:
The Portal to Texas History
Building Cooling and Air Conditioning
Advanced Research Projects Agency-Energy project sheet summarizing general information about the 15 projects that are a part of the Building Energy Efficiency Through Innovative Thermodevices (BEETIT) program including project goals, innovation needs, and potential impacts.
Date:
February 16, 2012
Creator:
United States. Advanced Research Projects Agency-Energy.
Object Type:
Text
System:
The UNT Digital Library
CALIBRATION OF X-RAY IMAGING DEVICES FOR ACCURATE INTENSITY MEASUREMENT
National Security Technologies (NSTec) has developed calibration procedures for X-ray imaging systems. The X-ray sources that are used for calibration are both diode type and diode/fluorescer combinations. Calibrating the X-ray detectors is key to accurate calibration of the X-ray sources. Both energy dispersive detectors and photodiodes measuring total flux were used. We have developed calibration techniques for the detectors using radioactive sources that are traceable to the National Institute of Standards and Technology (NIST). The German synchrotron at Physikalische Technische Bundestalt (PTB) is used to calibrate silicon photodiodes over the energy range from 50 eV to 60 keV. The measurements on X-ray cameras made using the NSTec X-ray sources have included quantum efficiency averaged over all pixels, camera counts per photon per pixel, and response variation across the sensor. The instrumentation required to accomplish the calibrations is described. X-ray energies ranged from 720 eV to 22.7 keV. The X-ray sources produce narrow energy bands, allowing us to determine the properties as a function of X-ray energy. The calibrations were done for several types of imaging devices. There were back illuminated and front illuminated CCD (charge coupled device) sensors, and a CID (charge injection device) type camera. The CCD and CID …
Date:
February 16, 2012
Creator:
Haugh, M. J.; Charest, M. R.; Ross, P. W.; Lee, J. J.; Schneider, M. B.; Palmer, N. E. et al.
Object Type:
Article
System:
The UNT Digital Library
The Cleburne Eagle News (Cleburne, Tex.), Ed. 1 Thursday, February 16, 2012
Weekly newspaper from Cleburne, Texas that includes local, state, and national news along with advertising.
Date:
February 16, 2012
Creator:
Oaks, Judy
Object Type:
Newspaper
System:
The Portal to Texas History
The Colony Courier-Leader (The Colony, Tex.), Vol. 31, No. 3, Ed. 1 Thursday, February 16, 2012
Weekly newspaper from The Colony, Texas that includes local, state, and national news along with advertising.
Date:
February 16, 2012
Creator:
Mann, Rick
Object Type:
Newspaper
System:
The Portal to Texas History
Cooper Review (Cooper, Tex.), Vol. 132, No. 7, Ed. 1 Thursday, February 16, 2012
Weekly newspaper from Cooper, Texas that includes local, state, and national news along with advertising.
Date:
February 16, 2012
Creator:
Roller, Cindy
Object Type:
Newspaper
System:
The Portal to Texas History