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243Am + 48Ca: A Second Look at the Rf/Db Data Set
In December of 2005 a series of experiments were performed at the U400 Cyclotron at the Flerov Laboratory of Nuclear Reactions in Dubna, Russia, using the reaction {sup 243}Am ({sup 48}Ca,3n) {sup 288}115 which, after a sequence of five alpha decays, produces a long-lived ({approx}1d) fission activity that had been detected previously in experiments using the Dubna Gas Filled Recoil Separator (DGFRS). These experiments were attempts to establish the elemental identity of the fissioning species as dubnium (element 105), which in turn confirms the identity of the original parent nucleus as element 115 through genetic correlation of the subsequent alpha decays. A series of approximately 24-hour bombardments were followed by chemical separations designed to isolate the Group Four and Five chemical fractions, and then separate the Nb and Ta fractions, which are Group Five homologues of dubnium and should therefore behave chemically similar. The samples were prepared for alpha and fission measurement and counted for an extended period of time. Fission events were detected in the Ta-like fractions only, which correspond to the fission coming from either the {sup 268}Db isotope directly or long-lived electron-capture decay in {sup 268}Db followed by a short half-life fission of {sup 268}Rf. In May …
Date:
January 29, 2008
Creator:
Henderson, R A & Moody, K J
Object Type:
Report
System:
The UNT Digital Library
The African Development Bank Group
This report discusses the African Development Bank (AfDB) Group, which is a regional development bank (RDB) "dedicated to combating poverty and improving the lives of people of the continent." It comprises three lending facilities: the market rate facility, the AfDB; a concessional lending facility, the African Development Fund; and a trust fund established by Nigeria to lend to low-income African countries. The Bank has 53 African members, as well as 24 non-regional members, including the United States.
Date:
January 29, 2008
Creator:
Weiss, Martin A.
Object Type:
Report
System:
The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 109, No. 206, Ed. 1 Tuesday, January 29, 2008
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 29, 2008
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Baytown Sun (Baytown, Tex.), Vol. 88, No. 29, Ed. 1 Tuesday, January 29, 2008
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
January 29, 2008
Creator:
Clements, Clifford E.
Object Type:
Newspaper
System:
The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 102, No. 9, Ed. 1 Tuesday, January 29, 2008
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
January 29, 2008
Creator:
Cartwright, Brian
Object Type:
Newspaper
System:
The Portal to Texas History
Botnets, Cybercrime, and Cyberterrorism: Vulnerabilities and Policy Issues for Congress
This report provides information about the Vulnerabilities and Policy Issues for Congress from Botnets, Cyber-crime, and Cyber-terrorism.
Date:
January 29, 2008
Creator:
Wilson, Clay
Object Type:
Report
System:
The UNT Digital Library
Broadband over Powerlines: Regulatory and Policy Issues
This report provides information about the Regulatory and Policy Issues Broadband over Power lines.
Date:
January 29, 2008
Creator:
Moloney Figliola, Patricia
Object Type:
Report
System:
The UNT Digital Library
Central Asia’s Security: Issues and Implications for U.S. Interests
The Central Asian states (Kazakhstan, Tajikistan, Turkmenistan, and Uzbekistan) face common security challenges from crime, corruption, terrorism, and faltering commitments to economic and democratic reforms. This report contains information on Central Asia's external security context, security problems and progress, border tensions, crime and corruption, economic and defense security, implications for U.S. interests, U.S. security assistance, and related issues and figures.
Date:
January 29, 2008
Creator:
Nichol, Jim
Object Type:
Report
System:
The UNT Digital Library
A Civilian Reserve for Stabilization and Reconstruction Abroad: Summary of a Workshop on U.S. Proposals and International Experiences and Related Issues for Congress
This report is on A Civilian Reserve for Stabilization and Reconstruction Abroad: Summary of a Workshop on U.S. Proposals and International Experiences and Related Issues for Congress.
Date:
January 29, 2008
Creator:
Serafino, Nina M.
Object Type:
Report
System:
The UNT Digital Library
Copyright Licensing in Music Distribution, Reproduction, and Public Performance
This report provides an overview of the complexities of the Copyright Act's Provisions concerning music licensing in the digital age. Copyright law provides protection for original works of authorship by conferring certain exclusive rights upon their creators.
Date:
January 29, 2008
Creator:
Yeh, Brian T.
Object Type:
Report
System:
The UNT Digital Library
Correlations between Optical, Chemical and Physical Properties of Biomass Burn Aerosols
Aerosols generated from burning different plant fuels were characterized to determine relationships between chemical, optical and physical properties. Single scattering albedo ({omega}) and Angstrom absorption coefficients ({alpha}{sub ap}) were measured using a photoacoustic technique combined with a reciprocal nephelometer. Carbon-to-oxygen atomic ratios, sp{sup 2} hybridization, elemental composition and morphology of individual particles were measured using scanning transmission X-ray microscopy coupled with near-edge X-ray absorption fine structure spectroscopy (STXM/NEXAFS) and scanning electron microscopy with energy dispersion of X-rays (SEM/EDX). Particles were grouped into three categories based on sp2 hybridization and chemical composition. Measured {omega} (0.4-1.0 at 405 nm) and {alpha}{sub ap} (1.0-3.5) values displayed a fuel dependence. The category with sp{sup 2} hybridization >80% had values of {omega} (<0.5) and {alpha}{sub ap} ({approx}1.25) characteristic of light absorbing soot. Other categories with lower sp2 hybridization (20 to 60%) exhibited higher {omega} (>0.8) and {alpha}{sub ap} (1.0 to 3.5) values, indicating increased absorption spectral selectivity.
Date:
January 29, 2008
Creator:
Hopkins, Rebecca J.; Lewis, K.; Desyaterik, Yury; Wang, Z.; Tivanski, Alexei V.; Arnott, W. P. et al.
Object Type:
Article
System:
The UNT Digital Library
Defense Acquisition: Overview, Issues, and Options for Congress
This report provides an Overview, Issues, and Options for Congress on Defense Acquisition.Department of defense activities to provide military capabilities for the defense of the nation are usually controversial and always complex.
Date:
January 29, 2008
Creator:
Schwartz, Moshe
Object Type:
Report
System:
The UNT Digital Library
Democracy Promotion: Cornerstone of U.S. Foreign Policy?
None
Date:
January 29, 2008
Creator:
Epstein, Susan B.; Serafino, Nina M. & Miko, Francis T.
Object Type:
Report
System:
The UNT Digital Library
Development of a High Resolution X-Ray Imaging Crystal Spectrometer for Measurement of Ion-Temperature and Rotation-Velocity Profiles in Fusion Energy Research Plasmas
A new imaging high resolution x-ray crystal spectrometer (XCS) has been developed to measure continuous profiles of ion temperature and rotation velocity in fusion plasmas. Following proof-of-principle tests on the Alcator C-Mod tokamak and the NSTX spherical tokamak, and successful testing of a new silicon, pixilated detector with 1 MHz count rate capability per pixel, an imaging XCS is being designed to measure full profiles of Ti and vφ on C-Mod. The imaging XCS design has also been adopted for ITER. Ion-temperature uncertainty and minimum measurable rotation velocity are calculated for the C-Mod spectrometer. The affects of x-ray and uclear-radiation background on the measurement uncertainties are calculated to predict performance on ITER.
Date:
January 29, 2008
Creator:
Hill, K. W.; Broennimann, C. H.; Eikenberry, E. F.; Ince-Cushman, A.; Lee, S. G.; Rice, J. E. et al.
Object Type:
Report
System:
The UNT Digital Library
Digital Surveillance: The Communications Assistance for Law Enforcement Act
This report provides information about The Communications Assistance for Law Enforcement Act on Digital Surveillance. CALEA is intended to preserve the ability of law enforcement officials to conduct electronic surveillance effectively and efficiently.
Date:
January 29, 2008
Creator:
Figliola, Patricia Moloney
Object Type:
Report
System:
The UNT Digital Library
Diplomacy for the 21st Century: Transformational Diplomacy
None
Date:
January 29, 2008
Creator:
Nakamura, Kennon H. & Epstein, Susan B.
Object Type:
Report
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Tuesday, January 29, 2008
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 29, 2008
Creator:
Wilson, Chris
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Faculty Recital: 2008-01-29 - Winspear Faculty Concert Series
Access:
Use of this item is restricted to the UNT Community
Faculty and guest artist concert presented at the UNT College of Music Winspear Performance Hall.
Date:
January 29, 2008
Creator:
Winspear Faculty Concert Series
Object Type:
Sound
System:
The UNT Digital Library
Farm Bill Budget and Costs: 2002 vs. 2007
None
Date:
January 29, 2008
Creator:
Chite, Ralph M.
Object Type:
Report
System:
The UNT Digital Library
The Federal Government Debt: Its Size and Economic Significance
This report explains the different measures of the U.S. government debt, discusses the historical growth in the debt, identifies the current owners of the debt, presents comparisons with government debt in other countries, and examines the potential economic risks associated with a growing federal debt.
Date:
January 29, 2008
Creator:
Cashell, Brian W.
Object Type:
Report
System:
The UNT Digital Library
Federal Oversight of Food Safety: FDA's Food Protection Plan Proposes Positive First Steps, but Capacity to Carry Them Out Is Critical
Testimony issued by the Government Accountability Office with an abstract that begins "The Food and Drug Administration (FDA) is responsible for ensuring the safety of roughly 80 percent of the U.S. food supply, including $417 billion worth of domestic food and $49 billion in imported food annually. The recent outbreaks of E. coli in spinach, Salmonella in peanut butter, and contamination in pet food highlight the risks posed by the accidental contamination of FDA-regulated food products. Changing demographics and consumption patterns underscore the urgency for effective food safety oversight. In response to these challenges, in November 2007, FDA and others released plans that discuss the oversight of food safety. FDA's Food Protection Plan sets a framework for food safety oversight. In addition, FDA's Science Board released FDA Science and Mission at Risk, which concluded that FDA does not have the capacity to ensure the safety of the nation's food supply. This testimony focuses on (1) federal oversight of food safety as a high-risk area that needs a governmentwide reexamination, (2) FDA's opportunities to better leverage its resources, (3) FDA's Food Protection Plan, and (4) tools that can help agencies to address management challenges. To address these issues, GAO interviewed FDA …
Date:
January 29, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
The Food and Drug Administration: Budget and Statutory History, FY1980-FY2007
This report provides Budget and Statutory history related to the Food and Drug Administration from FY1980 through FY2007.
Date:
January 29, 2008
Creator:
Johnson, Judith A.; Porter, Donna V.; Thaul, Susan & Williams, Erin D.
Object Type:
Report
System:
The UNT Digital Library
Greensheet (Houston, Tex.), Vol. 38, No. 613, Ed. 1 Tuesday, January 29, 2008
Free weekly newspaper that includes business and classified advertising.
Date:
January 29, 2008
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 38, No. 614, Ed. 1 Tuesday, January 29, 2008
Free weekly newspaper that includes business and classified advertising.
Date:
January 29, 2008
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History