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9,754 Matching Results
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Experimental Study of Crossing-Angle and Parasitic Effects at the PEP-II e+e- Collider
In a series of dedicated accelerator experiments, we measure the dependence of the PEP-II luminosity performance on small horizontal crossing angles and on the horizontal separation at the first parasitic crossing. The experiment is carried out by varying the IP angle of one of the beams in two different bunch patterns, one with and one without parasitic crossings. The measurements show satisfactory agreement with three-dimensional beam-beam simulations.
Date:
October 7, 2005
Creator:
Kozanecki, W.; Narsky, Ilya V.; Cai, Y.; Seeman, J. T. & Sullivan, M.
Object Type:
Article
System:
The UNT Digital Library
MTA Quarterly Progress Report - March, April, May, 1952
Quarterly report on projects - special M.T.A. distribution
Date:
August 7, 1952
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Increasing Waterflooding Reservoirs in the Wilmington Oil Field through Improved Reservoir Characterization and Reservoir Management, Class III
This project was intended to increase recoverable waterflood reserves in slope and basin reservoirs through improved reservoir characterization and reservoir management. The particular application of this project is in portions of Fault Blocks IV and V of the Wilmington Oil Field, in Long Beach, California, but the approach is widely applicable in slope and basin reservoirs, transferring technology so that it can be applied in other sections of the Wilmington field and by operators in other slope and basin reservoirs is a primary component of the project.
Date:
August 7, 2001
Creator:
Koerner, Roy; Clarke, Don; Walker, Scott; Phillips, Chris; Nguyen, John; Moos, Dan et al.
Object Type:
Report
System:
The UNT Digital Library
The Western Outlook. (San Francisco, Oakland and Los Angeles, Calif.), Vol. 21, No. 7, Ed. 1 Saturday, November 7, 1914
Weekly African-American newspaper published in Oakland, California that includes local, state and national news along with extensive advertising.
Date:
November 7, 1914
Creator:
Francis, Joseph S. & Derrick, J. Lincoln
Object Type:
Newspaper
System:
The Portal to Texas History
The Greensheet (Houston, Tex.), Vol. 41, No. 167, Ed. 1 Friday, May 7, 2010
Free weekly newspaper that includes business and classified advertising.
Date:
May 7, 2010
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 37, No. 107, Ed. 1 Friday, April 7, 2006
Free weekly newspaper that includes business and classified advertising.
Date:
April 7, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 38, No. 527, Ed. 1 Friday, December 7, 2007
Free weekly newspaper that includes business and classified advertising.
Date:
December 7, 2007
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 39, No. 479, Ed. 1 Friday, November 7, 2008
Free weekly newspaper that includes business and classified advertising.
Date:
November 7, 2008
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Greensheet (Houston, Tex.), Vol. 43, No. 539, Ed. 1 Friday, December 7, 2012
Free weekly newspaper that includes business and classified advertising.
Date:
December 7, 2012
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Greensheet (Houston, Tex.), Vol. 42, No. 431, Ed. 1 Friday, October 7, 2011
Free weekly newspaper that includes business and classified advertising.
Date:
October 7, 2011
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Ed. 1 Friday, January 7, 2005
Free weekly newspaper that includes business and classified advertising.
Date:
January 7, 2005
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 38, No. 371, Ed. 1 Friday, September 7, 2007
Free weekly newspaper that includes business and classified advertising.
Date:
September 7, 2007
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Modeling Water Management in Polymer-Electrolyte Fuel Cells
Fuel cells may become the energy-delivery devices of the 21st century with realization of a carbon-neutral energy economy. Although there are many types of fuel cells, polymerelectrolyte fuel cells (PEFCs) are receiving the most attention for automotive and small stationary applications. In a PEFC, hydrogen and oxygen are combined electrochemically to produce water, electricity, and waste heat. During the operation of a PEFC, many interrelated and complex phenomena occur. These processes include mass and heat transfer, electrochemical reactions, and ionic and electronic transport. Most of these processes occur in the through-plane direction in what we term the PEFC sandwich as shown in Figure 1. This sandwich comprises multiple layers including diffusion media that can be composite structures containing a macroporous gas-diffusion layer (GDL) and microporous layer (MPL), catalyst layers (CLs), flow fields or bipolar plates, and a membrane. During operation fuel is fed into the anode flow field, moves through the diffusion medium, and reacts electrochemically at the anode CL to form hydrogen ions and electrons. The oxidant, usually oxygen in air, is fed into the cathode flow field, moves through the diffusion medium, and is electrochemically reduced at the cathode CL by combination with the generated protons and electrons. …
Date:
September 7, 2007
Creator:
Department of Chemical Engineering, University of California, Berkeley; Weber, Adam; Weber, Adam Z.; Balliet, Ryan; Gunterman, Haluna P. & Newman, John
Object Type:
Book
System:
The UNT Digital Library
Pandora's Box and Non-Selfdual Topological Excitations
In the last few years, we have realized the existence of a new class of topological excitations, which are rather distinct from the platonic world of monopoles, monopole-instantons and instantons. All of the latter arise as solutions of the Prasad-Sommerfield type first order differential (self-duality) equations and have been extensively discussed in the context of confinement and chiral symmetry breaking for the last 30 years. However, new calculable deformations of asymptotically free chiral and vector-like gauge theories give us a new picture of these physical phenomena. Most often, the excitations which lead to confinement are not solutions to PS-type equations, they are non-selfdual and they are often bizarre. They are referred to as magnetic bions, triplets, and quintets, due to their composite nature. Bizarre as they are, combined with large-N volume independence, these novel non-self-dual excitations may also provide hope that at least some non-abelian gauge theories may be solvable.
Date:
June 7, 2010
Creator:
Unsal, Mithat
Object Type:
Article
System:
The UNT Digital Library
The Garland News (Garland, Tex.), Vol. 55, No. 19, Ed. 1 Friday, August 7, 1942
Weekly newspaper from Garland, Texas that includes local, state, and national news along with advertising.
Date:
August 7, 1942
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Garland News. (Garland, Tex.), Vol. 19, No. 13, Ed. 1 Friday, July 7, 1905
Weekly newspaper from Garland, Texas that includes local, state, and national news along with advertising.
Date:
July 7, 1905
Creator:
Holford, Will A.
Object Type:
Newspaper
System:
The Portal to Texas History
Bibliography on Pion-Pion Interaction
A bibliography on pion-pion interactions is presented. The 241 references are those available through November 7, 1961. A chronological listing is given together with excerpts or comments. In another part the references are grouped according to subject. An author index is included. (M.C.G.)
Date:
November 7, 1961
Creator:
Stevenson, M. L.
Object Type:
Report
System:
The UNT Digital Library
LASNEX: pondermotive force algorithm
The new algorithm used to calculate the ponderomotive force in LASNEX is discussed. The algorithm is shown to be identical with the corresponding analytic expression when the WKB solution for the fields in a plane-parallel medium is used. LASNEX calculations performed to check the ponderomotive force algorithm are described. 2 figures.
Date:
July 7, 1977
Creator:
Harte, J. A. & Zimmerman, G. B.
Object Type:
Report
System:
The UNT Digital Library
Geometrical theory of nonlinear phase distortion of intense laser beams
Phase distortion arising from whole beam self-focusing of intense laser pulses with arbitrary spatial profiles is treated in the limit of geometrical optics. The constant shape approximation is used to obtain the phase and angular distribution of the geometrical rays in the near field. Conditions for the validity of this approximation are discussed. Geometrical focusing of the aberrated beam is treated for the special case of a beam with axial symmetry. Equations are derived that show both the shift of the focus and the distortion of the intensity distribution that are caused by the nonlinear index of refraction of the optical medium. An illustrative example treats the case of beam distortion in a Nd:Glass amplifier.
Date:
May 7, 1975
Creator:
Glaze, J. A.; Hunt, J. T. & Speck, D. R.
Object Type:
Report
System:
The UNT Digital Library
Interlayer Interaction and Electronic Screening in MultilayerGraphene
The unusual transport properties of graphene are the direct consequence of a peculiar bandstructure near the Dirac point. We determine the shape of the {pi} bands and their characteristic splitting, and find the transition from two-dimensional to bulk character for 1 to 4 layers of graphene by angle-resolved photoemission. By detailed measurements of the {pi} bands we derive the stacking order, layer-dependent electron potential, screening length and strength of interlayer interaction by comparison with tight binding calculations, yielding a comprehensive description of multilayer graphene's electronic structure.
Date:
June 7, 2007
Creator:
Ohta, Taisuke; Bostwick, Aaron; McChesney, J.L.; Seyller, Thomas; Horn, Karsten & Rotenberg, Eli
Object Type:
Article
System:
The UNT Digital Library
Convairiety, Volume 5, Number 10, May 7, 1952
Bimonthly newsletter published for employees of the Convair Division in Fort Worth containing work-related information, updates about employees, and other news.
Date:
May 7, 1952
Creator:
Consolidated Vultee Aircraft Corporation
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Los Angeles, CA Regional Hearing Book dtd 14 July 2005
Los Angeles, CA Regional Hearing Book dtd 14 July 2005: This hearing was held for the state of California and the country of Guam.
Date:
September 7, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Legal Document
System:
The UNT Digital Library
Science and Technology Review January/February 2013
None
Date:
December 7, 2012
Creator:
Poyneer, L.
Object Type:
Report
System:
The UNT Digital Library
Mulard: A Multigroup Thermal Radiation Diffusion Mini-Application
None
Date:
March 7, 2012
Creator:
Brunner, T A
Object Type:
Article
System:
The UNT Digital Library