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Comparison of 2 mrad and 14/20 mrad Crossing Angle Extraction Lines
A study of the beam distributions in the 2 mrad and 14/20 mrad extraction lines are presented. Beam losses, energy losses due to synchrotron radiation and spin diffusion are shown. Synchrotron radiation distributions generated by the beam as it traverses the extraction lines are studied.
Date:
July 17, 2006
Creator:
Moffeit, Ken; Maruyama, Takashi; Nosochkov, Yuri; Seryi, Andrei; Wood, Mike & /SLAC
Object Type:
Report
System:
The UNT Digital Library
The Greensheet (Houston, Tex.), Vol. 43, No. 35, Ed. 1 Friday, February 17, 2012
Free weekly newspaper that includes business and classified advertising.
Date:
February 17, 2012
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 38, No. 335, Ed. 1 Friday, August 17, 2007
Free weekly newspaper that includes business and classified advertising.
Date:
August 17, 2007
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 36, No. 647, Ed. 1 Friday, February 17, 2006
Free weekly newspaper that includes business and classified advertising.
Date:
February 17, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 36, No. 227, Ed. 1 Friday, June 17, 2005
Free weekly newspaper that includes business and classified advertising.
Date:
June 17, 2005
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Advanced Waveform Simulation for Seismic Monitoring Events
This quarter, we have focused on several tasks: (1) Building a high-quality catalog of earthquake source parameters for the Middle East and East Asia. In East Asia, we computed source parameters using the CAP method for a set of events studied by Herrman et al., (MRR, 2006) using a complete waveform technique. Results indicated excellent agreement with the moment magnitudes in the range 3.5 -5.5. Below magnitude 3.5 the scatter increases. For events with more than 2-3 observations at different azimuths, we found good agreement of focal mechanisms. Depths were generally consistent, although differences of up to 10 km were found. These results suggest that CAP modeling provides estimates of source parameters at least as reliable as complete waveform modeling techniques. However, East Asia and the Yellow Sea Korean Paraplatform (YSKP) region studied are relatively laterally homogeneous and may not benefit from the CAP method’s flexibility to shift waveform segments to account for path-dependent model errors. A more challenging region to study is the Middle East where strong variations in sedimentary basin, crustal thickness and crustal and mantle seismic velocities greatly impact regional wave propagation. We applied the CAP method to a set of events in and around Iran and …
Date:
October 17, 2008
Creator:
Helmberger, Donald V.; Tromp, Jeroen & Rodgers, Arthur J.
Object Type:
Report
System:
The UNT Digital Library
The Garland News. (Garland, Tex.), Vol. 17, No. [2], Ed. 1 Friday, April 17, 1903
Weekly newspaper from Garland, Texas that includes local, state, and national news along with advertising.
Date:
April 17, 1903
Creator:
Cullom, John H.
Object Type:
Newspaper
System:
The Portal to Texas History
The Garland News. (Garland, Tex.), Vol. 19, No. 32, Ed. 1 Friday, November 17, 1905
Weekly newspaper from Garland, Texas that includes local, state, and national news along with advertising.
Date:
November 17, 1905
Creator:
Holford, Will A.
Object Type:
Newspaper
System:
The Portal to Texas History
The Garland News (Garland, Tex.), Vol. 55, No. 16, Ed. 1 Friday, July 17, 1942
Weekly newspaper from Garland, Texas that includes local, state, and national news along with advertising.
Date:
July 17, 1942
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Garland News (Garland, Tex.), Vol. 55, No. 3, Ed. 1 Friday, April 17, 1942
Weekly newspaper from Garland, Texas that includes local, state, and national news along with advertising.
Date:
April 17, 1942
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Proton--electron--positron Project: PEP
None
Date:
May 17, 1974
Creator:
Smith, L.
Object Type:
Article
System:
The UNT Digital Library
Spark chamber neutron and proton spectrometer: first report on performances
None
Date:
December 17, 1974
Creator:
Mamont-Ciesla, K. & Rindi, A.
Object Type:
Report
System:
The UNT Digital Library
Perturbation-Theory Rules for Computing the Self-Energy Operator in Quantum Statistical Mechanics
Highly convenient rules are given for the general term in the time- independent perturbation-theory expansion for the self-energy operator of quantum statistical mechanics. The rules are derived by starting from the usual formalism involving time-independent Green's functions. The well-known formulas for thermodynamic quantities in terms of the self-energy operator are included for completeness. (auth)
Date:
December 17, 1962
Creator:
Baym, G. & Sessler, A. M.
Object Type:
Report
System:
The UNT Digital Library
Bauschinger effect in uranium. [Rarefaction waves]
The Bauschinger effect (different elastic-plastic behavior upon unloading) was measured in uranium and a model of the effect developed for use in one-dimensional hydrodynamic codes. Results from plate-impact tests show that rarefaction waves in uranium can be calculated more accurately with this model. We conclude that the Bauschinger effect can be an important aspect of rarefaction waves in uranium and other materials. 8 figures. (auth)
Date:
March 17, 1976
Creator:
Cochran, S. G. & Guinan, M. W.
Object Type:
Report
System:
The UNT Digital Library
Highway Safety: Preliminary Observations on Efforts to Implement Changes in the Highway Safety Improvement Program Since SAFETEA-LU
Testimony issued by the Government Accountability Office with an abstract that begins "About 43,000 traffic fatalities occur annually, and another 290,000 people are seriously injured on the nation's roads. To reduce these numbers, the Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (SAFETEA-LU) nearly doubled funding for the Federal Highway Administration's (FHWA) Highway Safety Improvement Program (HSIP), authorizing $5.1 billion for 2006 through 2009. SAFETEA-LU also added requirements for states to develop strategic highway safety plans that cover all aspects of highway safety, including infrastructure, behavioral (education and enforcement), and emergency medical services projects; develop crash data analysis systems; and publicly report on the top 5 percent of hazardous locations on all their public roads. SAFETEA-LU also set aside funds for a legacy rail-highway crossing program and a new high-risk rural road program. This testimony provides preliminary information on the implementation of HSIP since SAFETEA-LU. It is based on ongoing work that addresses (1) states' implementation of HSIP following SAFETEA-LU, (2) FHWA's guidance and assistance for states, and (3) results of HSIP to date, including for the two set-aside programs. To conduct this study, GAO visited 6 states, judgmentally selected based on highway safety attributes, analyzed plans …
Date:
July 17, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
HEMP user's manual
A computer program to solve the conservation equations of twodimensional elastic-plastic flow has been implemented at LLL on the CDC 7600 machine. The program, named HEMP, is written in an expanded FORTRAN IV language. This user's manual explains the operation and use of the program. A section is provided that will aid in converting the program to other machines and systems. (auth)
Date:
December 17, 1973
Creator:
Giroux, E.D.
Object Type:
Report
System:
The UNT Digital Library
Use of the Bormann effect to produce monoenergetic x-rays
Anomalous transmission due to diffraction from the (220) planes of germanium has been measured for 1.65 mm, 8.58 mm, and 19.6 mm thick single crystals at energies ranging from 15 to 55 keV. A method of producing a continuously variable, in energy, source of nearly monoenergetic x-rays based on anomalous transmission and a bremsstrahlung input spectrum is described. Collimator design, crystal selection, crystal preparation, peak shapes, full-widths at half-maximum, and intensities for fixed crystals are discussed and compared to theory. The anomalous transmission factors ranged from 1 x 10/sup -7/ to 5 x 10/sup -6/ resulting in usable intensities of 2.5 to 37 photons per sec for tungsten target bremsstrahlung input spectra.
Date:
May 17, 1977
Creator:
Prevo, C. T.
Object Type:
Report
System:
The UNT Digital Library
Tracer Particle Locations with Curved or Arbitrary Planar Meshes
None
Date:
May 17, 2013
Creator:
Yao, J
Object Type:
Report
System:
The UNT Digital Library
Photodissociation and charge transfer dynamics of negative ions studied with femtosecond photoelectron spectroscopy
This dissertation presents studies aimed at understanding the potential energy surfaces and dynamics of isolated negative ions, and the effects of solvent on each. Although negative ions play important roles in atmospheric and solution phase chemistry, to a large extent the ground and excited state potential energy surfaces of gas phase negative ions are poorly characterized, and solvent effects even less well understood. In an effort to fill this gap, the author's coworkers and the author have developed a new technique, anion femtosecond photoelectron spectroscopy, and applied it to gas phase photodissociation and charge transfer processes. Studies are presented that (1) characterize the ground and excited states of isolated and clustered anions, (2) monitor the photodissociation dynamics of isolated and clustered anions, and (3) explore the charge-transfer-to-solvent states of atomic iodide clustered with polar and non-polar solvents.
Date:
December 17, 1999
Creator:
Zanni, Martin T.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Surface Phenomena and Parameters of Crystal Growth: Simple Basics
None
Date:
May 17, 2010
Creator:
Chernov, A A
Object Type:
Article
System:
The UNT Digital Library
On the molecular quasispecies model and the dominance of the fittest genotype
None
Date:
June 17, 2010
Creator:
Kostova, T; Zhou, C & Zemla, A
Object Type:
Article
System:
The UNT Digital Library
Seismic studies of the San Francisco-Oakland Bay Bridge
Computational simulation plays a central role in the engineering analysis and design of major bridge structures and accurate simulations are essential for the development of earthquake resistant and economical structural designs. This paper describes new methodologies and computational tools which have recently been developed for simulating earthquake ground motions and the seismic response of cable supported bridges. The simulation tools are described and an example application for an important long-span suspension bridge is demonstrated. The application portion of the study has particular focus on the potential damaging effects of long period displacement pulses and permanent ground displacements which can occur when a bridge is located in the near-field of a major earthquake fault.
Date:
August 17, 1999
Creator:
Astaneh-Asl, A.; Larsen, S. & McCallen, D.
Object Type:
Article
System:
The UNT Digital Library
NOW, Volume 4, Number 26, November 17, 1939
Weekly newsletter for employees of R.G. LeTourneau, Inc. containing religious articles, work-related information, updates about employees, and other news.
Date:
November 17, 1939
Creator:
R.G. LeTourneau, Inc.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
The Transuranium Elements
None
Date:
February 17, 1956
Creator:
Hyde, Earl K. & Seaborg, Glenn T.
Object Type:
Report
System:
The UNT Digital Library