Partner
UNT Libraries Government Documents Department
255
Oklahoma Historical Society
38
Sterling Municipal Library
12
National Museum of the Pacific War/Admiral Nimitz Foundation
8
UNT Libraries Special Collections
6
UNT Music Library
6
Alvin Community College
5
Carl Albert Congressional Research and Studies Center
4
San Antonio Public Library
4
Nellie Pederson Civic Library
3
48 More
Collection
Office of Scientific & Technical Information Technical Reports
147
Texas Digital Newspaper Program
82
Congressional Research Service Reports
66
Tocker Foundation Grant
47
Oklahoma Digital Newspaper Program
44
Government Accountability Office Reports
31
The Baytown Sun
12
Altus Times-Democrat
9
Chickasha Newspaper Collection
9
Sapulpa Herald
9
75 More
States
Year
Month
Day
Language
RHIC PC CNI Polarimeter:Status and Performance From the First Collider Run.
Polarimeters using the proton carbon elastic scattering process in Coulomb Nuclear Interference (CNI) region were installed in two RHIC rings. Polarization measurements were successfully carried out with the high energy polarized proton beams for the first polarized pp collision run. The physics principles, performance, and polarization measurements are presented.
Date:
September 9, 2002
Creator:
Jinnouchi, O.; Bland, L. C.; Bravar, A.; Bunce, G.; Cadman, R.; Deshpande, A. D. et al.
Object Type:
Article
System:
The UNT Digital Library
Development of Nanolaminate Thin Shell Mirrors
The space science community has identified a need for ultra-light weight, large aperture optical systems that are capable of producing high-resolution images of low contrast. Current mirror technologies are limited due either to not being scalable to larger sizes at reasonable masses, or to lack of surface finish, dimensional stability in a space environment or long fabrication times. This paper will discuss the development of thin-shell, nano-laminate mirror substrates that are capable of being electro-actively figured. This technology has the potential to substantially reduce the cost of space based optics by allowing replication of ultra-lightweight primary mirrors from a master precision tool. Precision master tools have been shown to be used multiple times with repeatable surface quality results with less than one week fabrication times for the primary optical mirror substrate. Current development has developed a series of 0.25 and 0.5 meter spherical nanolaminate mirrors that are less than 0.5 kg/m{sup 2} areal density before electroactive components are mounted, and a target of less than 2.0 kg/m with control elements. This paper will provide an overview of nanolaminate materials for optical mirrors, modeling of their behavior under figure control and experiments conducted to validate precision control.
Date:
August 9, 2002
Creator:
Hickey, G S; Lih, S S & Barbee, T
Object Type:
Article
System:
The UNT Digital Library
Search for X-Ray Induced Acceleration of the Decay of the 31-yr Isomer 178Hf Using Synchrotron Radiation
Releasing the energy stored in an isomeric nuclear state in a controlled way with an atomic or electromagnetic trigger is an attractive speculation: the energy gain may be on the order of the ratio of nuclear/atomic energies - MeV/keV. (Nuclear isomers are loosely defined as excited nuclear states with lifetimes longer than 10{sup -9} s.) Nuclear isomers, therefore, represent an opportunity for a stand-alone energy source if suitable schemes for trigger and control of the energy release can be found. Potential applications include space drive, as well as very bright {gamma}-ray sources. The nucleus {sup 178}Hf has a nuclear isomer with excitation energy E{sub x} = 2.447 MeV. The 2.447-MeV isomeric state decays slowly (t{sub 1/2} = 31 y) to the nearby state at 2.433 MeV. The J{sup {pi}} = 13{sup -} state loses energy in a rapid (t {approx} 10{sup -12} s) {gamma}-ray cascade ending at the 8{sup -} rotational band head which in turn decays via the ground-state rotational band cascade. The {gamma}-ray cascade is delayed at the 8{sup -} state at 1.147 MeV, since the 8{sup -} state is also isomeric, with t{sub 1/2} = 4 s. Very scarce quantities of the 16{sup +}, 31-yr isomer are …
Date:
May 9, 2002
Creator:
Ahmad, I.; Banar, J. C.; Becker, J. A.; Gemmell, D. S.; Kraemer, A.; Mashayekhi, A. et al.
Object Type:
Report
System:
The UNT Digital Library
THE RELATIVISTIC STERN GERLACH INTERACTION AS A TOOL FOR ATTAINING THE SPIN SEPARATION.
The relativistic Stem-Gerlach interaction is here considered as a tool for obtaining the spin state separation of an unpolarized (anti)proton beam circulating in a ring. Drawbacks, such as spin precessions within the TE rf cavity, spurious kicks due to the transverse electric field and, worst of all, filamentation in the longitudinal phase plane are analyzed. Possible remedies are proposed and their feasibility is discussed.
Date:
September 9, 2002
Creator:
CAMERON,P. CONTE,M. LUCCIO,A. U. MACKAY,W. W. PALAZZI,M. PUSTERLA,M.
Object Type:
Article
System:
The UNT Digital Library
Deposit Summary
Deposit summary of $105.00 made on June 10, 2002.
Date:
June 9, 2002
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Reconciliation Report
Reconciliation report with an ending account balance of $941.54 reconciled for the period ending on February 28, 2002.
Date:
March 9, 2002
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Reconciliation Report
Reconciliation report with an ending account balance of $1,544.07 reconciled for the period ending on September 30, 2002.
Date:
October 9, 2002
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Theory and Simulation of the Physics of Space Charge Dominated Beams
This report describes modeling of intense electron and ion beams in the space charge dominated regime. Space charge collective modes play an important role in the transport of intense beams over long distances. These modes were first observed in particle-in-cell simulations. The work presented here is closely tied to the University of Maryland Electron Ring (UMER) experiment and has application to accelerators for heavy ion beam fusion.
Date:
December 9, 2002
Creator:
Haber, Irving
Object Type:
Report
System:
The UNT Digital Library
Determination of Importance Evaluation for the ESF Enhanced Charcterization of the Repository Block Cross Drift
The objective of this DIE is to determine whether the ECRB-Cross-Drift-related activities, as identified in Section 6.0, could potentially impact (1) Yucca Mountain Site Characterization Project (YMP) testing or (2) the waste isolation capabilities of a potential repository at the Yucca Mountain site. Any controls necessary to limit such potential impacts are also identified herein.
Date:
January 9, 2002
Creator:
Goodin, S.
Object Type:
Report
System:
The UNT Digital Library
A New Computational Tool for Simulation of 3-D Flow and Heat Transfer in Boiling Water Reactors
This Phase I work has developed a novel hybrid Lattice Boltzmann Model for the simulation of nonideal fluid thermal dynamics and demonstrated that this model can be used to simulate fundamental two-phase flow processes including boiling initiation, bubble formation and coalescency, and flow-regime formation.
Date:
December 9, 2002
Creator:
Chen, Hudong
Object Type:
Report
System:
The UNT Digital Library
Neutron Production Measurements Relevant to Shielding forSpace-Related Activities
Neutron production cross sections have been measured from290 MeV/nucleon C and 600 MeV/nucleon Ne interacting in a slab ofsimulated Martian regolith/polyethylene composite, and from 400MeV/nucleon Ne interacting in a section of wall materials from theInternational Space Station. Neutron spectra were measured at 7 anglesbetween 5 degrees and 80 degrees, and for neutron energies 5 MeV andgreater. Spectra at forward angles are dominated by the breakup of theprojectile, whereas spectra at back angles show the typical exponentialfalloff with energy that is indicative of decay from the overlap regionand the target remnant. The measured total neutron production crosssections indicate that the regolith/polyethylene composite may be a moreeffective shielding material than the ISS wall materials, in terms of thenumber of neutrons produced.
Date:
April 9, 2002
Creator:
Heilbronn, Lawrence; Iwata, Yoshiyuki; Murakami, Takeshi; Iwase, Hiroshi; Nakamura, Takashi; Sato, Hisaki et al.
Object Type:
Article
System:
The UNT Digital Library
The Wylie News (Wylie, Tex.), Vol. 55, No. 20, Ed. 1 Wednesday, October 9, 2002
Weekly newspaper from Wylie, Texas that includes local, state and national news along with advertising.
Date:
October 9, 2002
Creator:
Engbrock, Chad B.
Object Type:
Newspaper
System:
The Portal to Texas History
Rains County Leader (Emory, Tex.), Vol. 114, No. 43, Ed. 1 Tuesday, April 9, 2002
Weekly newspaper from Emory, Texas that includes local, state, and national news along with advertising.
Date:
April 9, 2002
Creator:
Hill, Earl Clyde, Jr.
Object Type:
Newspaper
System:
The Portal to Texas History
Rains County Leader (Emory, Tex.), Vol. 115, No. 5, Ed. 1 Tuesday, July 9, 2002
Weekly newspaper from Emory, Texas that includes local, state, and national news along with advertising.
Date:
July 9, 2002
Creator:
Hill, Earl Clyde, Jr.
Object Type:
Newspaper
System:
The Portal to Texas History
Seminole Sentinel (Seminole, Tex.), Vol. 95, No. [68], Ed. 1 Sunday, June 9, 2002
Semi-weekly newspaper from Seminole, Texas that includes local, state, and national news along with extensive advertising.
Date:
June 9, 2002
Creator:
Brisendine, Lynn & Fisher, David
Object Type:
Newspaper
System:
The Portal to Texas History
Seminole Sentinel (Seminole, Tex.), Vol. 95, No. 25, Ed. 1 Wednesday, January 9, 2002
Semi-weekly newspaper from Seminole, Texas that includes local, state, and national news along with extensive advertising.
Date:
January 9, 2002
Creator:
Brisendine, Lynn & Fisher, David
Object Type:
Newspaper
System:
The Portal to Texas History
Comanche Chief (Comanche, Tex.), No. 1, Ed. 1 Thursday, May 9, 2002
Weekly newspaper from Comanche, Texas that includes local, state, and national news along with advertising.
Date:
May 9, 2002
Creator:
Wilkerson, James C., III
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 107, No. 81, Ed. 1 Wednesday, October 9, 2002
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
October 9, 2002
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 107, No. 3, Ed. 1 Wednesday, January 9, 2002
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
January 9, 2002
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
Polk County Enterprise (Livingston, Tex.), Vol. 120, No. 46, Ed. 1 Sunday, June 9, 2002
Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date:
June 9, 2002
Creator:
White, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Polk County Enterprise (Livingston, Tex.), Vol. 120, No. 37, Ed. 1 Thursday, May 9, 2002
Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date:
May 9, 2002
Creator:
White, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Texas Jewish Post (Fort Worth, Tex.), Vol. 56, No. 19, Ed. 1 Thursday, May 9, 2002
Weekly Jewish newspaper from Fort Worth, Texas that includes local, state, and national news along with extensive advertising.
Date:
May 9, 2002
Creator:
Wisch, Rene
Object Type:
Newspaper
System:
The Portal to Texas History
Lion Express (Livingston, Tex.), Vol. 10, No. 2, Ed. 1 Sunday, June 9, 2002
Newspaper published by the Livingston Independent School District in Livingston, Texas that includes news and information regarding Livingston schools along with advertising.
Date:
June 9, 2002
Creator:
Faith, Gregg
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 107, No. 64, Ed. 1 Friday, August 9, 2002
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
August 9, 2002
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History