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12.6 keV Kr K-alpha X-ray Source For High Energy Density Physics Experiments
A high contrast 12.6 keV Kr K{alpha} source has been demonstrated on the petawatt-class Titan laser facility. The contrast ratio (K{alpha} to continuum) is 65, with a competitive ultra short pulse laser to x-ray conversion efficiency of 10{sup -5}. Filtered shadowgraphy indicates that the Kr K{alpha} and K{beta} x-rays are emitted from a roughly 1 x 2 mm emission volume, making this source suitable for area backlighting and scattering. Spectral calculations indicate a typical bulk electron temperature of 50-70 eV (i.e. mean ionization state 13-16), based on the observed ratio of K{alpha} to K{beta}. Kr gas jets provide a debris-free high energy K{alpha} source for time-resolved diagnosis of dense matter.
Date:
April 22, 2008
Creator:
Kugland, N.; Constantin, C. G.; Niemann, C.; Neumayer, P.; Chung, H.; Doppner, T. et al.
Object Type:
Article
System:
The UNT Digital Library
805 MHz Beta = 0.47 Elliptical Accelerating Structure R & D
A 6-cell 805 MHz superconducting cavity for acceleration in the velocity range of about 0.4 to 0.53 times the speed of light was designed. After single-cell prototyping, three 6-cell niobium cavities were fabricated. In vertical RF tests of the 6-cell cavities, the measured quality factors (Q{sub 0}) were between 7 {center_dot} 10{sup 9} and 1.4 {center_dot} 10{sup 10} at the design field (accelerating gradient of 8 to 10 MV/m). A rectangular cryomodule was designed to house 4 cavities per cryomodule. The 4-cavity cryomodule could be used for acceleration of ions in a linear accelerator, with focusing elements between the cryomodules. A prototype cryomodule was fabricated to test 2 cavities under realistic operating conditions. Two of the 6-cell cavities were equipped with helium tanks, tuners, and input coupler and installed into the cryomodule. The prototype cryomodule was used to verify alignment, electromagnetic performance, frequency tuning, cryogenic performance, low-level RF control, and control of microphonics.
Date:
September 22, 2008
Creator:
Bricker, S.; Compton, C.; Hartung, W.; Johnson, M.; Marti, F.; Popierlarski, J. et al.
Object Type:
Report
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 37, No. 18, Ed. 1 Friday, February 22, 2008
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
February 22, 2008
Creator:
Pace, Joshua
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 38, No. 1, Ed. 1 Friday, August 22, 2008
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
August 22, 2008
Creator:
Price, Racheal
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
2005 the North American Solar Challenge
In July 2005 the North American Solar Challenge (NASC) featured university built solar powered cars ran across the United States into Canada. The competition began in Austin, Texas with stops in Weatherford, Texas; Broken Arrow, Oklahoma; Topeka, Kansas; Omaha, Nebraska; Sioux Falls, South Dakota, Fargo, North Dakota; Winnipeg, Manitoba; Brandon, Manitoba; Regina, Saskatchewan; Medicine Hat, Alberta; mainly following U.S. Highway 75 and Canadian Highway 1 to the finish line in Calgary, Alberta, Canada, for a total distance of 2,500 miles. NASC major sponsors include the U.S. Department of Energy (DOE), Natural Resources Canada and DOEs National Renewable Energy Laboratory. The event is designed to inspire young people to pursue careers in science and engineering. NASCs predecessors, the American Solar Challenge and Sunrayce, generally have been held every two years since 1990. With each race, the solar cars travel faster and further with greater reliability. The NASC promotes: -Renewable energy technologies (specifically photovoltaic or solar cells) -Educational excellence in science, engineering and mathematics -Creative integration of technical and scientific expertise across a wide-range of disciplines -Hands-on experience for students and engineers to develop and demonstrate their technical and creative abilities. Safety is the first priority for the NASC. Each team put …
Date:
December 22, 2008
Creator:
Eberle, Dan
Object Type:
Report
System:
The UNT Digital Library
2007 GRC on Cellulases and Cellulosomes (July 29-August 3, 2007)
Cellulose, a key component of the plant cell wall, comprises the most abundant source of organic carbon on the planet and its microbial degradation is of considerable biological and industrial importance. Indeed, the microbial degradation of cellulose and other plant structural polysaccharides is critical to the maintenance of the carbon cycle in terrestrial and marine microbial ecosystems, host invasion by several phytopathogens, and herbivore nutrition. While the enzymes that attack cellulose are already widely used in several biotechnology-based industries, the major future application of these biocatalysts is the conversion of plant biomass into bio-ethanol and other forms of energy. In that context, the 2007 Conference will present the latest breakthroughs in our understanding of the enzymology, structural biology and (meta)genomics underpinning the conversion of plant structural polysaccharides into fermentable sugars, both in natural and engineered processes. There is also an increased emphasis on the roles of other carbohydrate active enzymes in plant biomass conversion. The themes for the scientific sessions include: (1) crystallographic and biochemical analyses of enzyme structure and function; (2) molecular mechanisms underpinning enzyme catalysis, processivity and specificity; (3) functional and comparative analyses of carbohydrate binding modules and enzyme-substrate interactions; (4) directed evolution for the development of catalytically …
Date:
September 22, 2008
Creator:
Gray, Mark Morrison Nancy Ryan
Object Type:
Article
System:
The UNT Digital Library
Adoption: Real-Life Adoption Experiences Remind Us We Are All God's Adopted Children - God's Purpose is for Every Child to Be His Child
Lecture given Monday, September 22, 2008, 8:30 AM at Abilene Christian University: "We are God's children, but do we act like it? One mother's experience with adoption reminds us of our true identity in Christ."
Date:
September 22, 2008
Creator:
Vaughn, Kelly
Object Type:
Sound
System:
The Portal to Texas History
Africa Command: U.S. Strategic Interests and the Role of the U.S. Military in Africa
This report provides a broad overview of U.S. strategic interests in Africa and the role of U.S. military efforts on the continent as they pertain to the creation of U.S. Africa Command (AFRICOM). A discussion of AFRICOM's mission, its coordination with other government agencies, and its basing and manpower requirements is included.
Date:
August 22, 2008
Creator:
Ploch, Lauren
Object Type:
Report
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 132, No. 52, Ed. 1 Thursday, May 22, 2008
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
May 22, 2008
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
Albeni Falls Wildlife Mitigation Project : 2007 Annual Report : Appendix A: Maps Showing all the Idaho Department of Fish and Game Properties under the Albeni Falls Mitigation Project.
None
Date:
December 22, 2008
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Alien Smuggling: Recent Legislative Developments
This report discusses issues surrounding aliens within the United States including an overview of currently-proscribed activities, exemptions, sentencing provisions, and proposed legislative changes.
Date:
May 22, 2008
Creator:
Kim, Yule
Object Type:
Report
System:
The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 109, No. 200, Ed. 1 Tuesday, January 22, 2008
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 22, 2008
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 109, No. 227, Ed. 1 Friday, February 22, 2008
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 22, 2008
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 109, No. 278, Ed. 1 Tuesday, April 22, 2008
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 22, 2008
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 109, No. 304, Ed. 1 Thursday, May 22, 2008
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 22, 2008
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 109, No. 330, Ed. 1 Sunday, June 22, 2008
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 22, 2008
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 109, No. 356, Ed. 1 Tuesday, July 22, 2008
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
July 22, 2008
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 110, No. 18, Ed. 1 Friday, August 22, 2008
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 22, 2008
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 110, No. 42, Ed. 1 Monday, September 22, 2008
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 22, 2008
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 110, No. 68, Ed. 1 Wednesday, October 22, 2008
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 22, 2008
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 110, No. 118, Ed. 1 Monday, December 22, 2008
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 22, 2008
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The America COMPETES Act and the FY2009 Budget
This report discusses in detail the America COMPETES Act, which is intended to increase the nation's investment in research and development (R&D), and in science, technology, engineering, and mathematics (STEM) education. This report discusses the funding increases authorized by the act for various relevant institutions; the act's education activities intended to enhance the skills of STEM educators; and if Congress will continue to similarly fund the America COMPETES Act in the FY2010 budget.
Date:
May 22, 2008
Creator:
Stine, Deborah D.
Object Type:
Report
System:
The UNT Digital Library
America COMPETES Act: Programs, Funding, and Selected Issues
This report consists of America competes act: Programs, Funding, and Selected Issues.
Date:
January 22, 2008
Creator:
Stine, Deborah D.
Object Type:
Report
System:
The UNT Digital Library
Analytical discussion about Psalm 23 in Lamkang
Beshot Khullar translates and discusses Psalms 23 with Shobhana Chelliah and Thounaojam Harimohon Singh.
Date:
May 22, 2008
Creator:
Chelliah, Shobhana Lakshmi
Object Type:
Sound
System:
The UNT Digital Library