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499 Matching Results
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499
Point Defect Characterization in CdZnTe
Measurements of the defect levels and performance testing of CdZnTe detectors were performed by means of Current Deep Level Transient Spectroscopy (I-DLTS), Transient Charge Technique (TCT), Current versus Voltage measurements (I-V), and gamma-ray spectroscopy. CdZnTe crystals were acquired from different commercial vendors and characterized for their point defects. I-DLTS studies included measurements of defect parameters such as energy levels in the band gap, carrier capture cross sections, and defect densities. The induced current due to laser-generated carriers was measured using TCT. The data were used to determine the transport properties of the detectors under study. A good correlation was found between the point defects in the detectors and their performance.
Date:
March 24, 2009
Creator:
Gul, R.; Li, Z.; Bolotnikov, A.; Keeter, K.; Rodriguez, R. & James, R.
Object Type:
Article
System:
The UNT Digital Library
Post-Closure Inspection Letter Report for Corrective Action Units on the Nevada Test Site
None
Date:
March 24, 2009
Creator:
National Security Technologies, LLC
Object Type:
Report
System:
The UNT Digital Library
Private Pensions: Conflicts of Interest Can Affect Defined Benefit and Defined Contribution Plans
Testimony issued by the Government Accountability Office with an abstract that begins "Conflicts of interest typically exist when someone in a position of trust, such as a pension consultant, has competing professional or personal issues. Such competing interests can make it difficult for pension plan fiduciaries and others, in general, to fulfill their duties impartially and could cause them to breach their duty to act solely in the interest of plan participants and beneficiaries. The proliferation of consulting work and the complexity of business arrangements among investment advisors, plan consultants, and others have increased the likelihood of conflicts of interests for both defined benefit (DB) plans, where investment risk is largely borne by the plan sponsor and defined contribution (DC) plans, where such risk is largely borne by the participant. Given the potential financial harm conflicts of interest may pose to DB and DC plans, GAO was asked to report on (1) the effects undisclosed conflicts of interest may have on the financial performance of DB plans, and (2) the vulnerabilities that conflicts of interest may pose for DC plan participants. GAO interviewed a variety of experts, reviewed the Department of Labor's (Labor) legal and regulatory authority and analyzed government …
Date:
March 24, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
The Proposed U.S.-South Korea Free Trade Agreement (KORUS FTA): Provisions and Implications
This report is examines the provisions of the KORUS FTA in the context of the overall U.S.-South Korean economic relationship, U.S. objectives, and South Korean objectives.
Date:
March 24, 2009
Creator:
Cooper, William H.; Manyin, Mark E.; Jurenas, Remy & Platzer, Michaela D.
Object Type:
Report
System:
The UNT Digital Library
Rains County Leader (Emory, Tex.), Vol. 122, No. 40, Ed. 1 Tuesday, March 24, 2009
Weekly newspaper from Emory, Texas that includes local, state, and national news along with advertising.
Date:
March 24, 2009
Creator:
Hill, Earl Clyde, Jr.
Object Type:
Newspaper
System:
The Portal to Texas History
RAPID MEASUREMENTS OF NEPTUNIUM OXIDATION STATES USING CHROMATOGRAPHIC RESINS
The Savannah River Site's (SRS) H-Canyon facility uses ceric ammonium nitrate (CAN) to separate impure neptunium (Np) from a high sulfate feed stream. The material is processed using a two-pass solvent extraction purification which relies on CAN to oxidize neptunium to Np(VI) during the first pass prior to extraction. Spectrophotometric oxidation-state analyses normally used to validate successful oxidation to Np(VI) prior to extraction were compromised by this feed stream matrix. Therefore, a rapid chromatographic method to validate successful Np oxidation was developed using Eichrom Industries TRU and TEVA{reg_sign} resins. The method was validated and subsequently transferred to existing operations in the process analytical laboratories.
Date:
March 24, 2009
Creator:
Diprete, D; C Diprete, C; Mira Malek, M & Eddie Kyser, E
Object Type:
Article
System:
The UNT Digital Library
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 94, No. 162, Ed. 1 Tuesday, March 24, 2009
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 24, 2009
Creator:
Shance, Brenda
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Scholarship recital: 2009-03-24 - Claude Miller Scholarship Recipients
Access:
Use of this item is restricted to the UNT Community
A student scholarship recital presented at the UNT College of Music Recital Hall.
Date:
March 24, 2009
Creator:
Claude Miller Scholarship Recipients
Object Type:
Sound
System:
The UNT Digital Library
Social Security Administration: Further Actions Needed to Address Disability Claims and Service Delivery Challenges
Testimony issued by the Government Accountability Office with an abstract that begins "For years, the Social Security Administration (SSA) has experienced challenges managing a large disability workload and making timely decisions. In fiscal year 2006, SSA made about 3.7 million disability claims decisions, while over a million were awaiting a decision. Further, SSA has faced staffing challenges and difficulties managing its workloads at its network of approximately 1,300 field offices, where millions of people go to apply for disability and retirement benefits, to obtain Social Security cards, and for a host of other services. The Subcommittees on Income Security and Family Support, and on Social Security, House Committee on Ways and Means, asked GAO to address (1) key service delivery challenges facing SSA, particularly with respect to the backlog of disability claims, and (2) steps SSA is taking to address these challenges. This testimony is based primarily on reports assessing trends in disability claims processing and backlogs, steps SSA is taking to reduce the backlog, and other challenges SSA faces in meeting future service delivery needs. Certain information was updated to reflect recent legislative changes."
Date:
March 24, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Solubility of Phenanthrene in Binary Mixtures of C1 - C4 Alcohols + 2-Propanol and Ethanol + Methanol at 298.2 K
Article discussing the solubility of phenanthrene in binary mixtures of C1 - C4 alcohols + 2-propanol and ethanol + methanol at 298.2 K.
Date:
March 24, 2009
Creator:
Fakhree, Mohammad Amin Abolghassemi; Shayanfar, Ali; Acree, William E. (William Eugene) & Jouyban, Abolghasem
Object Type:
Article
System:
The UNT Digital Library
A Spatially Resolving X-ray Crystal Spectrometer for Measurement of Ion-temperature and Rotation-velocity Profiles on the AlcatorC-Mod Tokamak
A new spatially resolving x-ray crystal spectrometer capable of measuring continuous spatial profiles of high resolution spectra (λ/dλ > 6000) of He-like and H-like Ar Kα lines with good spatial (~1 cm) and temporal (~10 ms) resolutions has been installed on the Alcator C-Mod tokamak. Two spherically bent crystals image the spectra onto four two-dimensional Pilatus II pixel detectors. Tomographic inversion enables inference of local line emissivity, ion temperature (Ti), and toroidal plasma rotation velocity (vφ) from the line Doppler widths and shifts. The data analysis techniqu
Date:
March 24, 2009
Creator:
Hill, K. W.; Bitter, M. L.; Scott, S. D.; Ince-Cushman, A.; Reinke, M.; Rice, J. E. et al.
Object Type:
Report
System:
The UNT Digital Library
Student Recital: 2009-03-24 - Brian Walker, trumpet, and Jonathan Gill, trombone
A student recital presented at the UNT College of Music Concert Hall.
Date:
March 24, 2009
Creator:
Walker, Brian; Gill, Jonathan & van Schalkwyk, Willem
Object Type:
Sound
System:
The UNT Digital Library
Sweetwater Reporter (Sweetwater, Tex.), Vol. 111, No. 109, Ed. 1 Tuesday, March 24, 2009
Daily newspaper from Sweetwater, Texas that includes local, state, and national news along with advertising.
Date:
March 24, 2009
Creator:
Rodriguez, Tatiana
Object Type:
Newspaper
System:
The Portal to Texas History
Tax Benefits for Health Insurance and Expenses: Overview of Current Law and Legislation
None
Date:
March 24, 2009
Creator:
Lyke, Bob & Whittaker, Julie M.
Object Type:
Report
System:
The UNT Digital Library
Technical Review of Law Enforcement Standards and Guides Relative to Incident Management
In an effort to locate potential law enforcement-related standards that support incident management, a team from the Pacific Northwest National Laboratory (PNNL) contacted representatives from the National Institute of Standards-Office of Law Enforcement Standards (NIST-OLES), National Institute of Justice (NIJ), Federal Bureau of Investigation (FBI), Secret Service, ASTM International committees that have a law enforcement focus, and a variety of individuals from local and regional law enforcement organizations. Discussions were held with various state and local law enforcement organizations. The NIJ has published several specific equipment-related law enforcement standards that were included in the review, but it appears that law enforcement program and process-type standards are developed principally by organizations that operate at the state and local level. Input is provided from state regulations and codes and from external non-government organizations (NGOs) that provide national standards. The standards that are adopted from external organizations or developed independently by state authorities are available for use by local law enforcement agencies on a voluntary basis. The extent to which they are used depends on the respective jurisdictions involved. In some instances, use of state and local disseminated standards is mandatory, but in most cases, use is voluntary. Usually, the extent to which …
Date:
March 24, 2009
Creator:
Stenner, Robert D.; Salter, R.; Stanton, J. R. & Fisher, D.
Object Type:
Report
System:
The UNT Digital Library
U.S. Circuit and District Court Nominations: Senate Rejections and Committee Votes Other Than to Report Favorably, 1939-2009
This report lists the votes cast by the Judiciary Committee and the Senate on each of the 19 nominations and identifies senatorial courtesy, ideological disagreement, and concern over nominees' qualifications as among the circumstances that led to committee consideration of actions other than a favorable report.
Date:
March 24, 2009
Creator:
Rutkus, Denis S.
Object Type:
Report
System:
The UNT Digital Library
The U.S. Secret Service: An Examination and Analysis of Its Evolving Missions
This report frames potential policy questions concerning the Service's mission and organization through an examination of the USSS history and its statutory authorities, missions, and present activities within DHS.
Date:
March 24, 2009
Creator:
Reese, Shawn
Object Type:
Report
System:
The UNT Digital Library
Uncertainty Quantification Approaches for Advanced Reactor Analyses.
The original approach to nuclear reactor design or safety analyses was to make very conservative modeling assumptions so as to ensure meeting the required safety margins. Traditional regulation, as established by the U. S. Nuclear Regulatory Commission required conservatisms which have subsequently been shown to be excessive. The commission has therefore moved away from excessively conservative evaluations and has determined best-estimate calculations to be an acceptable alternative to conservative models, provided the best-estimate results are accompanied by an uncertainty evaluation which can demonstrate that, when a set of analysis cases which statistically account for uncertainties of all types are generated, there is a 95% probability that at least 95% of the cases meet the safety margins. To date, nearly all published work addressing uncertainty evaluations of nuclear power plant calculations has focused on light water reactors and on large-break loss-of-coolant accident (LBLOCA) analyses. However, there is nothing in the uncertainty evaluation methodologies that is limited to a specific type of reactor or to specific types of plant scenarios. These same methodologies can be equally well applied to analyses for high-temperature gas-cooled reactors and to liquid metal reactors, and they can be applied to steady-state calculations, operational transients, or severe accident …
Date:
March 24, 2009
Creator:
Briggs, L. L.
Object Type:
Report
System:
The UNT Digital Library
The University News (Irving, Tex.), Vol. 34, No. 19, Ed. 1 Tuesday, March 24, 2009
Weekly student newspaper from the University of Dallas in Irving, Texas that includes campus news and commentaries along with advertising.
Date:
March 24, 2009
Creator:
Tetzlaff, Mary
Object Type:
Newspaper
System:
The Portal to Texas History