Partner
UNT Libraries Government Documents Department
239
UNT Libraries Special Collections
57
Oklahoma Historical Society
45
UNT Libraries
35
Private Collection of Jim Bell
30
UNT Music Library
13
Sterling Municipal Library
11
National Museum of the Pacific War/Admiral Nimitz Foundation
10
Carl Albert Congressional Research and Studies Center
5
Bastrop Public Library
4
45 More
Collection
Texas Digital Newspaper Program
118
Office of Scientific & Technical Information Technical Reports
108
Congressional Research Service Reports
94
Oklahoma Digital Newspaper Program
51
Tocker Foundation Grant
34
Jim Bell Texas Architecture Photograph Collection
30
Government Accountability Office Reports
29
The Greensheet
29
University Photography Collection
27
Photographing UNT
27
86 More
Degree Department
Degree Discipline
Degree Level
Country
Decade
Year
Month
Day
522 Matching Results
Results open in a new window/tab.
Results:
1 - 24 of
522
next
Vacuum-ultraviolet (VUV) photoionization of small methanol and methanol-water clusters
In this work we report on thevacuum-ultraviolet (VUV) photoionization of small methanol and methanol-water clusters. Clusters of methanol with water are generated via co-expansion of the gas phase constituents in a continuous supersonic jet expansion of methanol and water seeded in Ar. The resulting clusters are investigated by single photon ionization with tunable vacuumultraviolet synchrotron radiation and mass analyzed using reflectron mass spectrometry. Protonated methanol clusters of the form (CH3OH)nH + (n=1-12) dominate the mass spectrum below the ionization energy of the methanol monomer. With an increase in water concentration, small amounts of mixed clusters of the form (CH3OH)n(H2O)H + (n=2-11) are detected. The only unprotonated species observed in this work are the methanol monomer and dimer. Appearance energies are obtained from the photoionization efficiency (PIE) curves for CH3OH +, (CH 3OH)2 +, (CH3OH)nH + (n=1-9), and (CH 3OH)n(H2O)H + (n=2-9 ) as a function of photon energy. With an increase in the water content in the molecular beam, there is an enhancement of photoionization intensity for methanol dimer and protonated methanol monomer at threshold. These results are compared and contrasted to previous experimental observations.
Date:
May 12, 2008
Creator:
Ahmed, Musahid; Ahmed, Musahid; Wilson, Kevin R.; Belau, Leonid & Kostko, Oleg
Object Type:
Article
System:
The UNT Digital Library
Timpson & Tenaha News (Timpson, Tex.), Vol. 26, No. 24, Ed. 1 Thursday, June 12, 2008
Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date:
June 12, 2008
Creator:
Alexander, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
Candidate Materials Evaluation for Supercritical Water-Cooled Reactor
Final technical report on the corrosion, stress corrosion cracking, and radiation response of candidate materials for the supercritical water-cooled reactor concept.
Date:
December 12, 2008
Creator:
Allen, T. R. & Was, G. S.
Object Type:
Report
System:
The UNT Digital Library
Examining Technology, Structure and Identity During an Enterprise System Implementation
This paper presents a longitudinal study of an Enterprise System (ES) implementation by critically examining the discursive context in which an ES implementation unfolds. The findings show that users strongly supported the ES in the earlier stage of implementation when the technology was an imaginary phenomenon. However, in later stages, when the technology is in use, user support was not consistent. In this phase the ES produces loss of control and an inability to function as an arbiter of fairness (in allocating resources associated with the system) thereby directly challenging existing professional identities and roles. These outcomes, in turn, generate acts of resistance on the part of workers. Users reach inside the technology and reshape it by devising creative workarounds that produce a sense of reskilling to counter the deskilling produced by the loss of control and power. The analysis also shows that an ES is a complex social phenomenon that is intricately linked to and complicit in shaping organizational structure and identity. In particular this study shows how technology, structure, and identity are in a mutually constitutive relationship.
Date:
November 12, 2008
Creator:
Alvarez, Rosio
Object Type:
Article
System:
The UNT Digital Library
Ferromagnetism and suppression of metallic clusters in Fe implanted ZnO -- a phenomenon related to defects?
We investigated ZnO(0001) single crystals annealed in high vacuum with respect to their magnetic properties and cluster formation tendency after implant-doping with Fe. While metallic Fe cluster formation is suppressed, no evidence for the relevance of the Fe magnetic moment to the observed ferromagnetism was found. The latter along with the cluster suppression is discussed with respect to defects in the ZnO host matrix, since the crystalline quality of the substrates was lowered due to the preparation as observed by x-ray diffraction.
Date:
March 12, 2008
Creator:
Arenholz, Elke; Zhou, S.; Potzger, K.; Talut, G.; Reuther, H.; Kuepper, K. et al.
Object Type:
Article
System:
The UNT Digital Library
International Criminal Court Cases in Africa: Status and Policy Issues
This report provides background on current International Criminal Court (ICC) cases and examines issues raised by the ICC's actions in Africa, including the potential deterrence of future abuses and the potential impact on African peace processes.
Date:
September 12, 2008
Creator:
Arieff, Alexis; Margesson, Rhoda & Browne, Marjorie Ann
Object Type:
Report
System:
The UNT Digital Library
PROPOSED SIAM PROBLEM
A recent paper by the present authors, together with mathematical physicists David Broadhurst and M. Larry Glasser, explored Bessel moment integrals, namely definite integrals of the general form {integral}{sub 0}{sup {infinity}} t{sup m}f{sup n}(t) dt, where the function f(t) is one of the classical Bessel functions. In that paper, numerous previously unknown analytic evaluations were obtained, using a combination of analytic methods together with some fairly high-powered numerical computations, often performed on highly parallel computers. In several instances, while we were able to numerically discover what appears to be a solid analytic identity, based on extremely high-precision numerical computations, we were unable to find a rigorous proof. Thus we present here a brief list of some of these unproven but numerically confirmed identities.
Date:
August 12, 2008
Creator:
BAILEY, DAVID H. & BORWEIN, JONATHAN M.
Object Type:
Report
System:
The UNT Digital Library
OF MICROBES AND MEN: A SPECIAL REPORT IN THE JOURNAL FOR MINORITY MEDICAL STUDENTS
In support of the mission for the Office of Science and the Office of Biological and Environmental Research (BER), Spectrum Publishers proposes an editorial project to inform and educate minority undergraduate students in the sciences, minority medical students and minority medical residents of the opportunities and challenges available to them as they complete their training. This editorial project will take the form of a 32-page insert in the Journal for Minority Medical Students. The subject matter will be determined by BER based on mission requirements. The material will be compiled, assembled, edited, revised, designed, printed and distributed as a total package with a vast majority of the work performed by our staff. Our objective is to provide the special report without added (and burdensome) work to the BER staff. The 32-page report will be distributed to our readership of 10,000 future scientists and physicians. In addition, we will prepare the insert so that it can also be used by BER as a stand-alone piece and outreach tool. After publication, we will solicit feedback from our readers through our unique Campus Rep Program of students strategically located on campuses across the nation who will provide valuable editorial feedback. This innovative program …
Date:
November 12, 2008
Creator:
BOWERS, BILL
Object Type:
Article
System:
The UNT Digital Library
Environmental Tests of the Flight GLAST LAT Tracker Towers
The Gamma-ray Large Area Space telescope (GLAST) is a gamma-ray satellite scheduled for launch in 2008. Before the assembly of the Tracker subsystem of the Large Area Telescope (LAT) science instrument of GLAST, every component (tray) and module (tower) has been subjected to extensive ground testing required to ensure successful launch and on-orbit operation. This paper describes the sequence and results of the environmental tests performed on an engineering model and all the flight hardware of the GLAST LAT Tracker. Environmental tests include vibration testing, thermal cycles and thermal-vacuum cycles of every tray and tower as well as the verification of their electrical performance.
Date:
March 12, 2008
Creator:
Bagagli, R.; Baldini, L.; Bellazzini, R.; Barbiellini, G.; Belli, F.; Borden, T. et al.
Object Type:
Article
System:
The UNT Digital Library
The Foreign Intelligence Surveillance Act: Comparison of the Senate Amendment to H.R. 3773 and the House Amendment to the Senate Amendment to H.R. 3773
This report provides an overview and review of legislative activity related to the Foreign Intelligence Surveillance Act (FISA). It also includes a detailed side-by-side comparison of the proposals to address FISA concerns: Senate Amendment to H.R. 3773 and the House Amendment to the Senate Amendment to H.R. 3773.
Date:
June 12, 2008
Creator:
Bazan, Elizabeth B.
Object Type:
Report
System:
The UNT Digital Library
Environmental Management Waste Management Facility Waste Lot Profile 155.5 for K-1015-A Laundry Pit, East Tennessee Technology Park Oak Ridge, Tennessee
In 1989, the Oak Ridge Reservation (ORR), which includes the East Tennessee Technology Park (ETTP), was placed on the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA) National Priorities List. The Federal Facility Agreement (FFA) (DOE 1992), effective January 1, 1992, now governs environmental restoration activities conducted under CERCLA at the ORR. Following signing of the FFA, U.S. Department of Energy (DOE), U.S. Environmental Protection Agency (EPA), and the state of Tennessee signed the Oak Ridge Accelerated Cleanup Plan Agreement on June 18, 2003. The purpose of this agreement is to define a streamlined decision-making process to facilitate the accelerated implementation of cleanup, to resolve ORR milestone issues, and to establish future actions necessary to complete the accelerated cleanup plan by the end of fiscal year 2008. While the FFA continues to serve as the overall regulatory framework for remediation, the Accelerated Cleanup Plan Agreement supplements existing requirements to streamline the decision-making process. The disposal of the K-1015 Laundry Pit waste will be executed in accordance with the 'Record of Decision for Soil, Buried Waste, and Subsurface Structure Actions in Zone, 2, East Tennessee Technology Park, Oak Ridge, Tennessee' (DOB/ORAH-2161&D2) and the 'Waste Handling Plan for the Consolidated …
Date:
June 12, 2008
Creator:
Bechtel Jacobs, Raymer J.E.
Object Type:
Report
System:
The UNT Digital Library
Horse Slaughter Prevention Bills and Issues
In 2006 two Texas plants and one in Illinois slaughtered nearly 105,000 horses for human food, mainly for European and Asian consumers. In 2007, court action effectively closed the Texas plants, and a new state ban in Illinois closed the plant. Meanwhile, activists have continued to press for legislative bans appropriated funds and user fees for inspection of horses for human food.
Date:
August 12, 2008
Creator:
Becker, Geoffrey S.
Object Type:
Report
System:
The UNT Digital Library
U.S. Food and Agricultural Imports: Safeguards and Selected Issues
The report provides background information in the increase of food and agricultural imports and federal oversight responsibilities. It discusses international trade considerations, import refusals by the Food and Drug Administration (FDA) and Food Safety and Inspection Service (FSIS), administration, and legislative proposals.
Date:
June 12, 2008
Creator:
Becker, Geoffrey S.
Object Type:
Report
System:
The UNT Digital Library
1896 Denton County Courthouse Entrance Detail
Photograph of a main entrance to the 1896 Denton County Courthouse in downtown Denton, Texas.
Date:
November 12, 2008
Creator:
Bell, Jim
Object Type:
Photograph
System:
The Portal to Texas History
1896 Denton County Courthouse Inside Corner Entrance
Photograph of one of four inside corner entrances for the 1896 Denton County Courthouse in downtown Denton, Texas. There are four inside corner entrance and four main entrances to the Courthouse.
Date:
November 12, 2008
Creator:
Bell, Jim
Object Type:
Photograph
System:
The Portal to Texas History
1896 Denton County Courthouse Lower Detail
Photograph of lower detail, including entrance, on the 1896 Denton County Courthouse in downtown Denton, Texas. The four main entrances are identical.
Date:
November 12, 2008
Creator:
Bell, Jim
Object Type:
Photograph
System:
The Portal to Texas History
1896 Denton County Courthouse Masonic Cornerstone
Photograph of the Masonic Lodge Cornerstone on the northeast corner of the 1896 Denton County Courthouse in downtown Denton, Texas,
Date:
November 12, 2008
Creator:
Bell, Jim
Object Type:
Photograph
System:
The Portal to Texas History
1896 Denton County Courthouse National Register Plaque
Photograph of the National Register Plaque on the north east corner of the 1896 Denton County Courthouse in Downtown Denton, Texas.
Date:
November 12, 2008
Creator:
Bell, Jim
Object Type:
Photograph
System:
The Portal to Texas History
1896 Denton County Courthouse North East Corner
Photograph of the north east corner of the 1896 Denton County Courthouse in downtown Denton, Texas.
Date:
November 12, 2008
Creator:
Bell, Jim
Object Type:
Photograph
System:
The Portal to Texas History
1896 Denton County Courthouse Short Column Detail
Photograph of a short red granite column with a red sandstone base and capital on the 1896 Denton County courthouse in downtown Denton, Texas.
Date:
November 12, 2008
Creator:
Bell, Jim
Object Type:
Photograph
System:
The Portal to Texas History
1896 Denton County Courthouse South Entrance
Photograph of the south entrance to the 1896 Denton County courthouse in downtown Denton, Texas.
Date:
November 12, 2008
Creator:
Bell, Jim
Object Type:
Photograph
System:
The Portal to Texas History
1896 Denton County Courthouse South Side
Photograph of the south side of the Denton County courthouse in downtown Denton, Texas. The east entrance is in the center, with two more entrances on the inside corners flanking it. The layout of the east side is consistent all the way around the 1896 Denton County courthouse. There are eight entrance doors that can be open for ventilation.
Date:
November 12, 2008
Creator:
Bell, Jim
Object Type:
Photograph
System:
The Portal to Texas History
1896 Denton County Courthouse Southwest Corner
Photograph of the southwest corner of the 1896 Denton County courthouse as viewed from Hickory and Elm Streets.
Date:
November 12, 2008
Creator:
Bell, Jim
Object Type:
Photograph
System:
The Portal to Texas History
1896 Denton County Courthouse Upper Detail
Photograph of the upper detail above an entrance door on the 1896 Denton County courthouse in downtown Denton, Texas. Pigeons are sitting on a ledge under an inscription of "1896" and between two pairs of columns.
Date:
November 12, 2008
Creator:
Bell, Jim
Object Type:
Photograph
System:
The Portal to Texas History