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Uranium Detection Using Small Scintillators in a Maritime Environment
The performance of several commercially available portable radiation spectrometers containing small NaI(Tl) scintillation detectors has been studied at the Savannah River National Laboratory (SRNL). These hand-held radioisotope identifiers are used by field personnel to detect and identify the illegal transport of uranium as a deterrent to undeclared nuclear proliferation or nuclear terrorism. The detection of uranium in a variety of chemical forms and isotopic enrichments presents some unique challenges in the maritime environment. This study was conducted using a variety of shielded and unshielded uranium sources in a simulated maritime environment. The results include estimates of the detection sensitivity for various isotopic enrichments and configurations using the manufacturer's spectral analysis firmware. More sophisticated methods for analyzing the spectra off-line are also evaluated to determine the detection limits and enrichment sensitivities from the field measurements.
Date:
May 12, 2006
Creator:
Hofstetter, K.; Donna Beals, D. & Ken Odell, K.
Object Type:
Article
System:
The UNT Digital Library
Věstník (Temple, Tex.), Vol. 94, No. 15, Ed. 1 Wednesday, April 12, 2006
Weekly Czech and English language newspaper from Temple, Texas published as the official organ of the Slavonic Benevolent Order of the State of Texas that includes news of interest to members along with advertising.
Date:
April 12, 2006
Creator:
Zavodny, Melanie
Object Type:
Newspaper
System:
The Portal to Texas History
Věstník (Temple, Tex.), Vol. 94, No. 28, Ed. 1 Wednesday, July 12, 2006
Weekly Czech and English language newspaper from Temple, Texas published as the official organ of the Slavonic Benevolent Order of the State of Texas that includes news of interest to members along with advertising.
Date:
July 12, 2006
Creator:
Zavodny, Melanie
Object Type:
Newspaper
System:
The Portal to Texas History
Veterans' Disability Benefits: VA Can Improve Its Procedures for Obtaining Military Service Records
A letter report issued by the Government Accountability Office with an abstract that begins "The Ranking Democratic Member, House Committee on Veterans' Affairs, asked GAO to determine (1) whether VA's internal assessments indicate its regional offices are complying with the requirements of the Veterans Claims Assistance Act (VCAA) of 2000 for obtaining military service records for veterans' disability compensation claims and (2) whether VBA could improve its procedures for obtaining military service records for claims involving post-traumatic stress disorder (PTSD)."
Date:
December 12, 2006
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Visualization of Fiber Structurein the Left and Right Ventricleof a Human Heart
The human heart is composed of a helical network of musclefibers. Anisotropic least squares filtering followed by fiber trackingtechniques were applied to Diffusion Tensor Magnetic Resonance Imaging(DTMRI) data of the excised human heart. The fiber configuration wasvisualized by using thin tubes to increase 3-dimensional visualperception of the complex structure. All visualizations were performedusing the high-quality ray-tracing software POV-Ray. The fibers are shownwithin the left and right ventricles. Both ventricles exhibit similarfiber architecture and some bundles of fibers are shown linking right andleft ventricles on the posterior region of the heart.
Date:
July 12, 2006
Creator:
Rohmer, Damien; Sitek, Arkadiusz & Gullberg, Grant T.
Object Type:
Report
System:
The UNT Digital Library
Waste Isolation Pilot Plant Biennial Environmental Compliance Report
This Biennial Environmental Compliance Report (BECR) documents compliance with environmental regulations at the Waste Isolation Pilot Plant (WIPP), a facility designed and authorized for the safe disposal of transuranic (TRU) radioactive waste. This BECR covers the reporting period from April 1, 2004, to March 31, 2006. As required by the WIPP Land Withdrawal Act (LWA) (Public Law [Pub. L.] 102-579, as amended by Pub. L. 104-201), the BECR documents United States (U.S.) Department of Energy (DOE) compliance with regulations and permits issued pursuant to the following: (1) Title 40 Code of Federal Regulations (CFR) Part 191, Subpart A, "Environmental Standards for Management and Storage"; (2) Clean Air Act (CAA) (42 United States Code [U.S.C.] §7401, et seq.); (3) Solid Waste Disposal Act (SWDA) (42 U.S.C. §§6901-6992, et seq.); (4) Safe Drinking Water Act (SDWA) (42 U.S.C. §§300f, et seq.); (5) Toxic Substances Control Act (TSCA) (15 U.S.C. §§2601, et seq.); (6) Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) (42 U.S.C. §§9601, et seq.); and all other federal and state of New Mexico laws pertaining to public health and safety or the environment.
Date:
October 12, 2006
Creator:
Services, Washington Regulatory and Environmental
Object Type:
Report
System:
The UNT Digital Library
Water Quality: Implementing the Clean Water Act
This report provides a summary on implementing the Clean Water Act. This report replaces CRS Issue Brief IB89102, "Water Quality: Implementing the Clean Water Act," by Claudia Copeland.
Date:
June 12, 2006
Creator:
Copeland, Claudia
Object Type:
Report
System:
The UNT Digital Library
Water Quality: Implementing the Clean Water Act
None
Date:
December 12, 2006
Creator:
Copeland, Claudia
Object Type:
Report
System:
The UNT Digital Library
The Wetlands Coverage of the Clean Water Act is Revisited by the Supreme Court: Rapanos v. United States
This report discusses the Supreme Court decision in Rapanos v. United States, which addressed the asserted jurisdiction of the U.S. Army Corps of Engineers and the Environmental Protection Agency (EPA) over wetlands adjacent to "waters of the United States," the problematic phrase used by the Clean Water Act (CWA) to define the geographic scope of the act's wetlands permitting program.
Date:
September 12, 2006
Creator:
Meltz, Robert & Copeland, Claudia
Object Type:
Report
System:
The UNT Digital Library
"When the Safety System Fails the Worker: Did We Do Our Job?...a Case Study"
None
Date:
May 12, 2006
Creator:
McConnell, S
Object Type:
Article
System:
The UNT Digital Library
Why Certain Trade Agreements Are Approved as Congressional-Executive Agreements Rather Than as Treaties
Trade agreements such asthe NAFTA and the GATT Uruguay Round agreements have been approved by majority vote of each House of Congress rather than by twothirds vote of the Senate — that is, they have been treated as congressional-executive agreements rather than astreaties. The congressional-executive agreement has been the vehicle for implementingCongress' long-standing policy ofseeking trade benefitsfor the United States through reciprocal trade negotiations. In a succession of statutes, Congress has authorized the President to negotiate and enter into tariff and nontariff barrier (NTB) agreements for limited periods, while mandating that NTB and free trade area agreements negotiated under this authority could enter into force for the United States only if approved by both Houses in a bill enacted into public law and other statutory conditions were met.
Date:
July 12, 2006
Creator:
Grimmett, Jeanne J.
Object Type:
Report
System:
The UNT Digital Library
Wideband Multichannel Time-Reversal Processing for Acoustic Communications in a Tunnel-like Structure
The development of multichannel time-reversal (T/R) processing techniques continues to progress rapidly especially when the need to communicate in a highly reverberative environment becomes critical. The underlying T/R concept is based on time-reversing the Green's function characterizing the uncertain communications channel investigating the deleterious dispersion and multipath effects. In this paper, attention is focused on two major objectives: (1) wideband communications leading to a time reference modulation technique; and (2) multichannel acoustic communications in a tunnel (or cave or pipe) with many obstructions, multipath returns, severe background noise, disturbances, long propagation paths ({approx}180) with disruptions (bends). For this extremely hostile environment, it is shown that multichannel T/R receivers can easily be extended to the wideband designs while demonstrating their performance in both the ''canonical'' stairwell of our previous work as well as a tunnel-like structure. Acoustic information signals are transmitted with an 8-element host or base station array to two client receivers with a significant loss in signal levels due to the propagation environment. In this paper, the results of the new wideband T/R processor and modulation scheme are discussed to demonstrate the overall performance for both high (24-bit) and low (1-bit) bit level analog-to-digital (A/D) converter designs. These results …
Date:
January 12, 2006
Creator:
Candy, J. V.; Chambers, D. H.; Robbins, C. L.; Guidry, B. L.; Poggio, A. J.; Dowla, F. et al.
Object Type:
Article
System:
The UNT Digital Library
Wireless Technology and Spectrum Demand: Advanced Wireless Services
Advances in wireless telecommunications technology are converging with Internet technology to foster new generations of applications and services. Presently, the United States and other countries are moving to third-generation (3G) and fourth-generation mobile telephony. The defining feature of these technologies is that transmission speeds are significantly faster than prevailing technologies. A related trend is the growth in use of Wi-Fi (wireless fidelity) and WiMAX (an industry designation for a specific broadband standard). This report describes various legislation relating to this expansion and ongoing telecommunications development.
Date:
June 12, 2006
Creator:
Moore, Linda K.
Object Type:
Report
System:
The UNT Digital Library
[Woman with paper flipchart in background]
Elizabeth Lopez, manager of economic development for the FWHCC.
Date:
January 12, 2006
Creator:
Castillo, José L.
Object Type:
Photograph
System:
The UNT Digital Library
WTO Doha Round: The Agricultural Negotiations
This report assesses the current status of agricultural negotiations in the Doha Round of trade negotiations of the World Trade Organization (WTO); traces the developments leading up to the December 2005 Hong Kong Ministerial; examines the major agricultural negotiating proposals; discusses the potential effects of a successful Doha Round agreement on global trade, income, U.S. farm policy, and U.S. agriculture; and provides background on the WTO, the Doha Round, the key negotiating groups, and a chronology of key events relevant to the agricultural negotiations.
Date:
September 12, 2006
Creator:
Hanrahan, Charles & Schnepf, Randy
Object Type:
Report
System:
The UNT Digital Library
WTO Doha Round: The Agricultural Negotiations
The pace of negotiations in the Doha Round of multilateral trade negotiations quickened in October 2005 as the December Hong Kong Ministerial Conference of the World Trade Organization (WTO) approached. At Hong Kong, however, while WTO members agreed on a broad outline of negotiating objectives for further liberalizing global trade in agriculture, industry and services, they made only limited progress in determining precise numerical formulas (known as modalities) for meeting the Round’s aims. WTO members agreed to intensify efforts to reach agreement on modalities and conclude Doha Round negotiations by the end of 2006. This report assesses the current status of agricultural negotiations in the Doha Round; traces the developments leading up to the Hong Kong Ministerial; examines the major agricultural negotiating proposals; discusses the potential effects of a successful Doha Round agreement on global trade, income, U.S. farm policy, and U.S. agriculture; and provides background on the WTO, the Doha Round, the key negotiating groups, and a schedule of historical and upcoming events relevant to the agricultural negotiations.
Date:
January 12, 2006
Creator:
Hanrahan, Charles E. & Schnepf, Randy
Object Type:
Report
System:
The UNT Digital Library
WTO Doha Round: The Agricultural Negotiations
On July 24, 2006, the WTO’s Director General announced the indefinite suspension of further negotiations in the Doha Development Agenda or Doha Round of multilateral trade negotiations. The principal cause of the suspension was that a core group of WTO member countries — the United States, the European Union (EU), Brazil, India, Australia, and Japan — known as the G-6 had reached an impasse over specific methods to achieve the broad aims of the round for agricultural trade: substantial reductions in trade-distorting domestic subsidies, elimination of export subsidies, and substantially increased market access for agricultural products. This report assesses the current status of agricultural negotiations in the Doha Round; traces the developments leading up to the December 2005 Hong Kong Ministerial; examines the major agricultural negotiating proposals; discusses the potential effects of a successful Doha Round agreement on global trade, income, U.S. farm policy, and U.S. agriculture; and provides background on the WTO, the Doha Round, the key negotiating groups, and a chronology of key events relevant to the agricultural negotiations.
Date:
September 12, 2006
Creator:
Hanrahan, Charles E. & Schnepf, Randy
Object Type:
Report
System:
The UNT Digital Library
The WTO, Intellectual Property Rights, and the Access to Medicines Controversy
None
Date:
December 12, 2006
Creator:
Fergusson, Ian F.
Object Type:
Report
System:
The UNT Digital Library
The Wynnewood Gazette (Wynnewood, Okla.), Vol. 103, No. 41, Ed. 1 Thursday, January 12, 2006
Weekly newspaper from Wynnewood, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 12, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Wynnewood Gazette (Wynnewood, Okla.), Vol. 104, No. 28, Ed. 1 Thursday, October 12, 2006
Weekly newspaper from Wynnewood, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 12, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Yoakum Herald-Times (Yoakum, Tex.), Vol. 114, No. 15, Ed. 1 Wednesday, April 12, 2006
Weekly newspaper from Yoakum, Texas that includes local, state, and national news along with advertising.
Date:
April 12, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Yoakum Herald-Times (Yoakum, Tex.), Vol. 114, No. 28, Ed. 1 Wednesday, July 12, 2006
Weekly newspaper from Yoakum, Texas that includes local, state, and national news along with advertising.
Date:
July 12, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History