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3C454.3 Revelas the Structure and Physics of its 'Blazar Zone' (open access)

3C454.3 Revelas the Structure and Physics of its 'Blazar Zone'

Recent multi-wavelength observations of 3C454.3, in particular during its giant outburst in 2005, put severe constraints on the location of the 'blazar zone', its dissipative nature, and high energy radiation mechanisms. As the optical, X-ray, and millimeter light-curves indicate, significant fraction of the jet energy must be released in the vicinity of the millimeter-photosphere, i.e. at distances where, due to the lateral expansion, the jet becomes transparent at millimeter wavelengths. We conclude that this region is located at {approx} 10 parsecs, the distance coinciding with the location of the hot dust region. This location is consistent with the high amplitude variations observed on {approx} 10 day time scale, provided the Lorentz factor of a jet is {Gamma}{sub j} {approx} 20. We argue that dissipation is driven by reconfinement shock and demonstrate that X-rays and {gamma}-rays are likely to be produced via inverse Compton scattering of near/mid IR photons emitted by the hot dust. We also infer that the largest gamma-to-synchrotron luminosity ratio ever recorded in this object - having taken place during its lowest luminosity states - can be simply due to weaker magnetic fields carried by a less powerful jet.
Date: November 28, 2007
Creator: Sikora, M.; Moderski, R. & Madejski, G.M.
Object Type: Article
System: The UNT Digital Library
ALSNews 2007 (open access)

ALSNews 2007

Compilation of Advanced Light Source newsletter, ALSNews, for 2007, Volumes 272-282.
Date: November 28, 2007
Creator: McCullough (Ed.), Julie & Tamura (Ed.), Lori
Object Type: Report
System: The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 109, No. 154, Ed. 1 Wednesday, November 28, 2007 (open access)

The Altus Times (Altus, Okla.), Vol. 109, No. 154, Ed. 1 Wednesday, November 28, 2007

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: November 28, 2007
Creator: Bush, Michael
Object Type: Newspaper
System: The Gateway to Oklahoma History

[Ania Bard performs String Quartet No. 61 in D Minor, Op. 76, No. 2, “Quinten”]

Photograph of University of North Texas student Ania Bard playing violin for String Quartet No. 61 in D Minor, Op. 76, No. 2, “Quinten” during a concert hosted by the Center for Chamber Music Studies at Winspear Hall.
Date: November 28, 2007
Creator: University of North Texas. College of Music.
Object Type: Photograph
System: The UNT Digital Library
Animal Waste and Water Quality: EPA Regulation of Concentrated Animal Feeding Operations (CAFOs) (open access)

Animal Waste and Water Quality: EPA Regulation of Concentrated Animal Feeding Operations (CAFOs)

This report provides background on the revised environmental rules, the previous Clean Water Act rules and the Clinton Administration proposal, and perspectives of key interest groups on the proposal and final regulations.
Date: November 28, 2007
Creator: Copeland, Claudia
Object Type: Report
System: The UNT Digital Library

[Bancroft Quartet performs String Quartet No. 61 in D Minor, Op. 76, No. 2, “Quinten”]

Photograph of the University of North Texas' Bancroft Quartet performing String Quartet No. 61 in D Minor, Op. 76, No. 2, “Quinten” during a concert hosted by the Center for Chamber Music Studies at Winspear Hall. Ensemble members (l-r) Ania Bard, Rosalyn Hart, Esra Çelikten, and Raquel Bastos (behind Çelikten) are playing the violin, violin, cello, and viola, respectively.
Date: November 28, 2007
Creator: University of North Texas. College of Music.
Object Type: Photograph
System: The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 86, No. 362, Ed. 1 Wednesday, November 28, 2007 (open access)

The Baytown Sun (Baytown, Tex.), Vol. 86, No. 362, Ed. 1 Wednesday, November 28, 2007

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date: November 28, 2007
Creator: Clements, Clifford E.
Object Type: Newspaper
System: The Portal to Texas History

[Benjamin Raviotta performs Brass Quintet, Op. 65, 1]

Photograph of University of North Texas student Benjamin Raviotta playing French horn for Brass Quintet, Op. 65 during a concert held by the Center for Chamber Music Studies at Winspear Hall.
Date: November 28, 2007
Creator: University of North Texas. College of Music.
Object Type: Photograph
System: The UNT Digital Library

[Benjamin Raviotta performs Brass Quintet, Op. 65, 2]

Photograph of University of North Texas student Benjamin Raviotta playing French horn for Brass Quintet, Op. 65 during a concert held by the Center for Chamber Music Studies at Winspear Hall.
Date: November 28, 2007
Creator: University of North Texas. College of Music.
Object Type: Photograph
System: The UNT Digital Library

[Benjamin Raviotta performs Brass Quintet, Op. 65, 3]

Photograph of University of North Texas student Benjamin Raviotta playing French horn for Brass Quintet, Op. 65 during a concert held by the Center for Chamber Music Studies at Winspear Hall.
Date: November 28, 2007
Creator: University of North Texas. College of Music.
Object Type: Photograph
System: The UNT Digital Library

[Brass Quintet, Op. 65]

Photograph of (l-r) Nicholas Althouse, Benjamin Raviotta, Felix Burghelea, Danny Vinson, and John Cord performing Brass Quintet, Op. 65 during a concert hosted by the Center for Chamber Music Studies at Winspear Hall.
Date: November 28, 2007
Creator: University of North Texas. College of Music.
Object Type: Photograph
System: The UNT Digital Library
Bunch Length Measurements in SPEAR3 (open access)

Bunch Length Measurements in SPEAR3

A series of bunch length measurements were made in SPEAR3 for two different machine optics. In the achromatic optics the bunch length increases from the low-current value of 16.6ps rms to about 30ps at 25ma/bunch yielding an inductive impedance of -0.17{Omega}. Reducing the momentum compaction factor by a factor of {approx}60 [1] yields a low-current bunch length of {approx}4ps rms. In this paper we review the experimental setup and results.
Date: November 28, 2007
Creator: Corbett, W.J.; Fisher, A.; Huang, X.; Safranek, J.; Sebek, J.; /SLAC et al.
Object Type: Article
System: The UNT Digital Library
Burleson Star (Burleson, Tex.), Vol. 43, No. 19, Ed. 1 Wednesday, November 28, 2007 (open access)

Burleson Star (Burleson, Tex.), Vol. 43, No. 19, Ed. 1 Wednesday, November 28, 2007

Semiweekly newspaper from Burleson, Texas that includes local, state, and national news along with advertising.
Date: November 28, 2007
Creator: Rayburn, Michael
Object Type: Newspaper
System: The Portal to Texas History
Characterization and Electrochemical Performance of SubstitutedLiNi0.4Co0.2-yAlyMn0.4O2 (0<_y<_0.2) Cathode Materials (open access)

Characterization and Electrochemical Performance of SubstitutedLiNi0.4Co0.2-yAlyMn0.4O2 (0<_y<_0.2) Cathode Materials

A complete series of LiNi0.4Co0.2-yAlyMn0.4O2 (0<_y<_0.2) materials have been synthesized and investigated as cathode materials for lithium ion batteries. When cycled between 2.0 and 4.3 V vs. Li/Li+ at a current density of 0.1 mA/cm2, stable capacities of ~;;160 mAh/g for y=0 to ~;;110 mAh/g for y=0.2 are achieved. Upon increasing the current density, it is found that all materials containing aluminum show reduced polarization and improved rate performance. The optimal performance at all current densities was found for the compound with y=0.05. The effect of aluminumsubstitution on the crystal structure of the host is discussed.
Date: November 28, 2007
Creator: Wilcox, James D. & Doeff, Marca M.
Object Type: Article
System: The UNT Digital Library
Cherokeean Herald (Rusk, Tex.), Vol. 158, No. 40, Ed. 1 Wednesday, November 28, 2007 (open access)

Cherokeean Herald (Rusk, Tex.), Vol. 158, No. 40, Ed. 1 Wednesday, November 28, 2007

Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date: November 28, 2007
Creator: Whitehead, Marie
Object Type: Newspaper
System: The Portal to Texas History
China’s Currency: A Summary of the Economic Issues (open access)

China’s Currency: A Summary of the Economic Issues

This report summarizes the main findings CRS Report RL32165, China's Currency: Economic Issues and Options for U.S. Trade Policy, by Wayne M. Morrison and Marc Labonte.
Date: November 28, 2007
Creator: Morrison, Wayne M. & Labonte, Marc
Object Type: Report
System: The UNT Digital Library

[Chuong Vu and Grace Mei-En Ho perform Piano Quartet in E-flat major, Op. 47]

Photograph of University of North Texas students Chuong Vu (left) and Grace Mei-En Ho (right) playing violin and cello, respectively, for Piano Quartet in E-flat major, Op. 47 during a concert hosted by the Center for Chamber Music Studies at Winspear Hall.
Date: November 28, 2007
Creator: University of North Texas. College of Music.
Object Type: Photograph
System: The UNT Digital Library

[Chuong Vu performs Piano Quartet in E-flat major, Op. 47]

Photograph of University of North Texas student Chuong Vu playing violin for Piano Quartet in E-flat major, Op. 47 during a concert hosted by the Center for Chamber Music Studies at Winspear Hall.
Date: November 28, 2007
Creator: University of North Texas. College of Music.
Object Type: Photograph
System: The UNT Digital Library

[Claire Salz performs Kleine Kammermusik, Op. 24, No. 2]

Photograph of University of North Texas student Claire Salz playing oboe for Kleine Kammermusik, Op. 24, No. 2 during a concert hosted by the Center for Chamber Music Studies at Winspear Hall.
Date: November 28, 2007
Creator: University of North Texas. College of Music.
Object Type: Photograph
System: The UNT Digital Library
The Clifton Record (Clifton, Tex.), Vol. 112, No. 48, Ed. 1 Wednesday, November 28, 2007 (open access)

The Clifton Record (Clifton, Tex.), Vol. 112, No. 48, Ed. 1 Wednesday, November 28, 2007

Weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date: November 28, 2007
Creator: Smith, W. Leon
Object Type: Newspaper
System: The Portal to Texas History
The Collegian (Hurst, Tex.), Vol. 20, No. 12, Ed. 1 Wednesday, November 28, 2007 (open access)

The Collegian (Hurst, Tex.), Vol. 20, No. 12, Ed. 1 Wednesday, November 28, 2007

Weekly student newspaper published in Hurst, Texas serving the Tarrant County College District that includes school news and information along with advertising.
Date: November 28, 2007
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
The Colony Courier-Leader (The Colony, Tex.), Vol. 26, No. 43, Ed. 1 Wednesday, November 28, 2007 (open access)

The Colony Courier-Leader (The Colony, Tex.), Vol. 26, No. 43, Ed. 1 Wednesday, November 28, 2007

Weekly newspaper from The Colony, Texas that includes local, state, and national news along with advertising.
Date: November 28, 2007
Creator: Monk, Devin
Object Type: Newspaper
System: The Portal to Texas History
Commissioning the LCLS Injector (open access)

Commissioning the LCLS Injector

The Linac Coherent Light Source (LCLS) is a SASE x-ray Free-Electron Laser (FEL) project presently under construction at SLAC. The injector section, from drive laser and RF photocathode gun through first bunch compressor chicane, was installed in fall 2006. Initial system commissioning with an electron beam was completed in August 2007, with the goal of a 1.2-micron emittance in a 1-nC bunch clearly demonstrated. The second phase of commissioning, including second bunch compressor and full linac, is planned for 2008, with FEL commissioning in 2009. We report experimental results and experience gained in the first phase of commissioning, including the photo-cathode drive laser, RF gun, photocathode, S-band and X-band RF systems, first bunch compressor, and the various beam diagnostics.
Date: November 28, 2007
Creator: Akre, R.; Dowell, D.; Emma, P.; Frisch, J.; Gilevich, S.; Hays, G. et al.
Object Type: Article
System: The UNT Digital Library

[Danny Vinson performs Brass Quintet, Op. 65]

Photograph of University of North Texas student Danny Vinson playing trombone for Brass Quintet, Op. 65 during a concert hosted by the Center for Chamber Music Studies at Winspear Hall.
Date: November 28, 2007
Creator: University of North Texas. College of Music.
Object Type: Photograph
System: The UNT Digital Library