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Propulsion Systems for Navy Ships and Submarines (open access)

Propulsion Systems for Navy Ships and Submarines

Correspondence issued by the Government Accountability Office with an abstract that begins "In recent years, the Navy has used nuclear propulsion systems for its submarines and most aircraft carriers and conventional propulsion systems that rely on fossil fuel for its surface combatants and amphibious warfare ships. As the Navy looks to design an affordable force that is capable of meeting future security challenges, some of the assumptions and factors that have guided past Navy decisions on propulsion systems may require reassessment. For example, technological advances have enabled greater efficiency in both nuclear and conventional propulsion systems. Moreover, the cost of fossil fuel has risen sharply in recent years. Congress requested that we review the Navy's assessment of alternative propulsion methods for submarines and surface combatants. Our objectives were to determine (1) the status and scope of key Navy studies on alternative propulsion methods, (2) the major improvements to existing propulsion systems, (3) near-term and future ships' propulsion systems, and (4) the various ship propulsion related technologies the Navy is pursuing. In March 2006, we provided you with a briefing of our findings regarding propulsion systems for Navy ships and submarines. This report summarizes the results of that briefing as well …
Date: July 6, 2006
Creator: United States. Government Accountability Office.
Object Type: Text
System: The UNT Digital Library
Child Support Enforcement: More Focus on Labor Costs and Administrative Cost Audits Could Help Reduce Federal Expenditures (open access)

Child Support Enforcement: More Focus on Labor Costs and Administrative Cost Audits Could Help Reduce Federal Expenditures

A letter report issued by the Government Accountability Office with an abstract that begins "Congress established federal standards for the child support enforcement program (CSE) in 1975. State agencies administer the program and the Office of Child Support Enforcement (OCSE) in the Department of Health and Human Services (HHS) oversees it. The CSE program provides several services, including collecting child support payments from noncustodial parents--those who are not the primary caregivers--and distributing these payments to families. Generally, the federal government reimburses state agencies 66 percent of their costs for administering the CSE program. GAO determined (1) how total net federal expenditures for administrative costs changed from fiscal year 2000 to fiscal year 2004; (2) the categories of costs that contributed most to administrative costs in recent years; and (3) steps state agencies have taken to manage costs, and steps OCSE has taken to help state agencies and ensure federal funds have been used appropriately. GAO analyzed program data, surveyed all 54 state agencies and visited 6, interviewed program officials, and reviewed laws, policies, and reports."
Date: July 6, 2006
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
Defense Acquisitions: Further Management and Oversight Changes Needed for Efforts to Modernize Cheyenne Mountain Attack Warning Systems (open access)

Defense Acquisitions: Further Management and Oversight Changes Needed for Efforts to Modernize Cheyenne Mountain Attack Warning Systems

A letter report issued by the Government Accountability Office with an abstract that begins "The Cheyenne Mountain Operations Center houses numerous complex computer systems for tracking air, missile, and space events that could threaten homeland security or undermine military operations in theater. To ensure this mission can be met, the systems require ongoing upgrades. The most recent upgrade program--the Combatant Commanders' Integrated Command and Control System (CCIC2S)--was initiated in 2000. Given the critical missions supported by Cheyenne Mountain systems, GAO initiated a review to (1) determine the status of the CCIC2S program in terms of meeting its cost, schedule, and performance goals; (2) gauge the extent to which DOD has followed best practices in managing program requirements; and (3) assess DOD's control and oversight mechanisms for CCIC2S."
Date: July 6, 2006
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
Genetic Diversity Among Botulinum Neurotoxin Producing Clostridial Strains (open access)

Genetic Diversity Among Botulinum Neurotoxin Producing Clostridial Strains

Clostridium botulinum is a taxonomic designation for many diverse anaerobic spore forming rod-shaped bacteria which have the common property of producing botulinum neurotoxins (BoNTs). The BoNTs are exoneurotoxins that can cause severe paralysis and even death in humans and various other animal species. A collection of 174 C. botulinum strains were examined by amplified fragment length polymorphism (AFLP) analysis and by sequencing of the 16S rRNA gene and BoNT genes to examine genetic diversity within this species. This collection contained representatives of each of the seven different serotypes of botulinum neurotoxins (BoNT A-G). Analysis of the16S rRNA sequences confirmed earlier reports of at least four distinct genomic backgrounds (Groups I-IV) each of which has independently acquired one or more BoNT serotypes through horizontal gene transfer. AFLP analysis provided higher resolution, and can be used to further subdivide the four groups into sub-groups. Sequencing of the BoNT genes from serotypes A, B and E in multiple strains confirmed significant sequence variation within each serotype. Four distinct lineages within each of the BoNT A and B serotypes, and five distinct lineages of serotype E strains were identified. The nucleotide sequences of the seven serotypes of BoNT were compared and show varying degrees …
Date: July 6, 2006
Creator: Hill, K K; Smith, T J; Helma, C H; Ticknor, L O; Foley, B T; Svennson, R T et al.
Object Type: Article
System: The UNT Digital Library
Laser Fusion: The First Ten Years 1962-1972 (open access)

Laser Fusion: The First Ten Years 1962-1972

This account of the beginning of the program on laser fusion at Livermore in 1962, and its subsequent development during the decade ending in 1972, was originally prepared as a contribution to the January 1991 symposium 'Achievements in Physics' honoring Professor Keith Brueckner upon his retirement from the University of San Diego at La Jolla. It is a personal recollection of work at Livermore from my vantage point as its scientific leader, and of events elsewhere that I thought significant. This period was one of rapid growth in which the technology of high-power short-pulse lasers needed to drive the implosion of thermonuclear fuel to the temperature and density needed for ignition was developed, and in which the physics of the interaction of intense light with plasmas was explored both theoretically and experimentally.
Date: July 6, 2006
Creator: Kidder, R. E.
Object Type: Book
System: The UNT Digital Library
Gas Storage Technology Consortium (open access)

Gas Storage Technology Consortium

Gas storage is a critical element in the natural gas industry. Producers, transmission & distribution companies, marketers, and end users all benefit directly from the load balancing function of storage. The unbundling process has fundamentally changed the way storage is used and valued. As an unbundled service, the value of storage is being recovered at rates that reflect its value. Moreover, the marketplace has differentiated between various types of storage services, and has increasingly rewarded flexibility, safety, and reliability. The size of the natural gas market has increased and is projected to continue to increase towards 30 trillion cubic feet (TCF) over the next 10 to 15 years. Much of this increase is projected to come from electric generation, particularly peaking units. Gas storage, particularly the flexible services that are most suited to electric loads, is critical in meeting the needs of these new markets. In order to address the gas storage needs of the natural gas industry, an industry-driven consortium was created--the Gas Storage Technology Consortium (GSTC). The objective of the GSTC is to provide a means to accomplish industry-driven research and development designed to enhance operational flexibility and deliverability of the Nation's gas storage system, and provide a …
Date: July 6, 2006
Creator: Morrison, Joel L. & Elder, Sharon L.
Object Type: Report
System: The UNT Digital Library
The optical constants of plutonium metal between .7 and 4.3 eV measured by spectroscopic ellipsometry using a double-windowed experimental chamber. (open access)

The optical constants of plutonium metal between .7 and 4.3 eV measured by spectroscopic ellipsometry using a double-windowed experimental chamber.

A double-windowed vacuum-tight experimental chamber was developed, and calibrated on the spectroscopic ellipsometer over the energy range from .7 to 4.5 eV using a silicon wafer with approximately 25 nm oxide thickness to remove the multiple-window effects from measurements. The ellipsometric measurements were done such that incident and exit beam were at 65 degree from surface normal. The plutonium sample (3 mm diameter, .1 mm thick) was electro-polished and mounted into the sample chamber in a glove box having a nitrogen atmosphere with less than 100ppm moisture and oxygen content. The index of refraction n and the extinction coefficient k decrease from 3.7 to 1 and 5.5 to 1.1 respectively as the photon energy increases from .7 to 4.3 eV.
Date: July 6, 2006
Creator: Mookerji, B; Stratman, M; Wall, M & Siekhaus, W
Object Type: Article
System: The UNT Digital Library
Accelerated Evolution of Conserved Noncoding Sequences in theHuman Genome (open access)

Accelerated Evolution of Conserved Noncoding Sequences in theHuman Genome

Genomic comparisons between human and distant, non-primatemammals are commonly used to identify cis-regulatory elements based onconstrained sequence evolution. However, these methods fail to detect"cryptic" functional elements, which are too weakly conserved amongmammals to distinguish from nonfunctional DNA. To address this problem,we explored the potential of deep intra-primate sequence comparisons. Wesequenced the orthologs of 558 kb of human genomic sequence, coveringmultiple loci involved in cholesterol homeostasis, in 6 nonhumanprimates. Our analysis identified 6 noncoding DNA elements displayingsignificant conservation among primates, but undetectable in more distantcomparisons. In vitro and in vivo tests revealed that at least three ofthese 6 elements have regulatory function. Notably, the mouse orthologsof these three functional human sequences had regulatory activity despitetheir lack of significant sequence conservation, indicating that they arecryptic ancestral cis-regulatory elements. These regulatory elementscould still be detected in a smaller set of three primate speciesincluding human, rhesus and marmoset. Since the human and rhesus genomesequences are already available, and the marmoset genome is activelybeing sequenced, the primate-specific conservation analysis describedhere can be applied in the near future on a whole-genome scale, tocomplement the annotation provided by more distant speciescomparisons.
Date: July 6, 2006
Creator: Prambhakar, Shyam; Noonan, James P.; Paabo, Svante & Rubin, EdwardM.
Object Type: Article
System: The UNT Digital Library
Greensheet (Houston, Tex.), Vol. 37, No. 260, Ed. 1 Thursday, July 6, 2006 (open access)

Greensheet (Houston, Tex.), Vol. 37, No. 260, Ed. 1 Thursday, July 6, 2006

Free weekly newspaper that includes business and classified advertising.
Date: July 6, 2006
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 37, No. 261, Ed. 1 Thursday, July 6, 2006 (open access)

Greensheet (Houston, Tex.), Vol. 37, No. 261, Ed. 1 Thursday, July 6, 2006

Free weekly newspaper that includes business and classified advertising.
Date: July 6, 2006
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Scene: North Texas Daily (Denton, Tex.), Vol. 90, No. 115, Ed. 1 Thursday, July 6, 2006 (open access)

Scene: North Texas Daily (Denton, Tex.), Vol. 90, No. 115, Ed. 1 Thursday, July 6, 2006

Weekly magazine edition of the daily student newspaper from the University of North Texas in Denton, Texas that includes local, state and campus news along with advertising.
Date: July 6, 2006
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
TDNA Approval of New Members, July 6, 2006 (open access)

TDNA Approval of New Members, July 6, 2006

Agenda for July 6, 2006, Texas Daily Newspaper Association meeting for the approval of new memberships. Agenda items include the one newspaper members and one associate membership to be approved by the board members, The River Cities Tribune and the Sedgwick, Detert, Moran & Arnold, LLP.
Date: July 6, 2006
Creator: Texas Daily Newspaper Association
Object Type: Text
System: The UNT Digital Library
Texas Attorney General Opinion: GA-0443 (open access)

Texas Attorney General Opinion: GA-0443

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Greg Abbott, regarding a legal question submitted for clarification: Whether a taxing unit has a tax lien on a manufactured home physically located in the unit's jurisdiction on January 1 of the tax year, regardless of how ownership is reflected on the records of the Manufactured Housing Division of the Texas Department of Housing and Community Affairs; whether a tax lien must be filed with the Manufactured Housing Division to be enforceable against a manufactured home that has been properly designated as real property.
Date: July 6, 2006
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
[TDNA Membership Status Report] (open access)

[TDNA Membership Status Report]

Membership status report for the Texas Daily Newspaper Association board of directors meeting on July 13, 2006 at the Headliners Club, in Austin, Texas. The document states that TDNA expects to receive $410,103 in member dues for 2006 - $390,623 from newspapers and $19,480 from associate members. The report gives details on the associates who were billed dues but have not yet paid.
Date: July 6, 2006
Creator: Texas Daily Newspaper Association
Object Type: Report
System: The UNT Digital Library
[Letter from Ken Whalen to the TDNA Officers and Directors] (open access)

[Letter from Ken Whalen to the TDNA Officers and Directors]

Letter from Ken Whalen to the TDNA Officers and Directors on July 6, 2006 with the subject July 13, 2006 Board of Directors Meeting. The Board of Directors Meeting for July 13, 2006 will be held at the Headliners Club in downtown Austin, 221 West Sixth Street on the 21st floor of the Bank One Building and the meeting is scheduled to being promptly at 10:00 AM.
Date: July 6, 2006
Creator: Whalen, Ken
Object Type: Letter
System: The UNT Digital Library
The Greensheet (Arlington-Grand Prairie, Tex.), Vol. 30, No. 87, Ed. 1 Thursday, July 6, 2006 (open access)

The Greensheet (Arlington-Grand Prairie, Tex.), Vol. 30, No. 87, Ed. 1 Thursday, July 6, 2006

Free weekly newspaper that includes business and classified advertising.
Date: July 6, 2006
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
[TDNA Membership Services Report] (open access)

[TDNA Membership Services Report]

A membership services report of the Texas Daily Newspaper Association board of directors meeting, July 13, 2006 at the Headliners Club in Austin, Texas. The document details the many ways that the association will help their members through various services, benefiting the Texas newspapers both directly and indirectly.
Date: July 6, 2006
Creator: Texas Daily Newspaper Association
Object Type: Report
System: The UNT Digital Library
TECHNICAL JUSTIFICATION FOR CHOOSING PROPANE AS A CALIBRATION AGENT FOR TOTAL FLAMMABLE VOLATILE ORGANIC COMPOUND (VOC) DETERMINATIONS (open access)

TECHNICAL JUSTIFICATION FOR CHOOSING PROPANE AS A CALIBRATION AGENT FOR TOTAL FLAMMABLE VOLATILE ORGANIC COMPOUND (VOC) DETERMINATIONS

This document presents the technical justification for choosing and using propane as a calibration standard for estimating total flammable volatile organic compounds (VOCs) in an air matrix. A propane-in-nitrogen standard was selected based on a number of criteria: (1) has an analytical response similar to the VOCs of interest, (2) can be made with known accuracy and traceability, (3) is available with good purity, (4) has a matrix similar to the sample matrix, (5) is stable during storage and use, (6) is relatively non-hazardous, and (7) is a recognized standard for similar analytical applications. The Waste Retrieval Project (WRP) desires a fast, reliable, and inexpensive method for screening the flammable VOC content in the vapor-phase headspace of waste containers. Table 1 lists the flammable VOCs of interest to the WRP. The current method used to determine the VOC content of a container is to sample the container's headspace and submit the sample for gas chromatography--mass spectrometry (GC-MS) analysis. The driver for the VOC measurement requirement is safety: potentially flammable atmospheres in the waste containers must be allowed to diffuse prior to processing the container. The proposed flammable VOC screening method is to inject an aliquot of the headspace sample into …
Date: July 6, 2006
Creator: DOUGLAS, J.G.
Object Type: Report
System: The UNT Digital Library
Use of Lubricants in the NIF (open access)

Use of Lubricants in the NIF

There are two principal concerns that govern the use of lubricants in NIF: (1) Airborne molecular contaminants (AMCs)--AMCs are known to seriously degrade the performance of sol-gel coated optics. AMCs are produced by the slow outgassing of residues (non-volatile residues or ''NVRs'') of high molecular weight compounds left on surfaces. Lubricants, particularly hydrocarbon lubricants, are a primary source of such NVRs. (2) Particulates--Particulates that accumulate on optical surfaces can cause permanent physical damage when exposed to high energy density laser light. Lubricant residues exposed to high energy density light will pyrolyze or decompose and produce carbon particulates. The NIF Approved Materials Database lists several lubricants that have been tested for use in NIF environments. Many of these lubricants were tested according to MELs 99-006 (oven outgassing test) or 99-007 (vacuum outgassing test). In these tests, the change in percent transmission of light through a sol-gel coated optic placed next to the sample under evaluation is used as the diagnostic. Samples that cause less than 0.1% change in optical transmission are deemed suitable for use inside beam enclosures. This testing, however, addresses only the concern associated with AMCs. To assess the issue of particle generation, a flashlamp or ''aerosol'' test is …
Date: July 6, 2006
Creator: Gourdin, W & Biltoft, P
Object Type: Report
System: The UNT Digital Library
Measurement of Branching Fractions and CP-ViolatingCharge Asymmetries for B Meson Decays to D(*)D(*), and Implications for the CKMAngle gamma (open access)

Measurement of Branching Fractions and CP-ViolatingCharge Asymmetries for B Meson Decays to D(*)D(*), and Implications for the CKMAngle gamma

In summary, the authors have measured branching fractions, upper limits, and charge asymmetries for all B meson decays to D{sup (*)} {bar D}{sup (*)}.
Date: July 6, 2006
Creator: Aubert, B.; Barate, R.; Bona, M.; Boutigny, D.; Couderc, F.; Karyotakis, Y. et al.
Object Type: Article
System: The UNT Digital Library
Lexington Observer (Lexington, Okla.), Vol. 11, No. 13, Ed. 1 Thursday, July 6, 2006 (open access)

Lexington Observer (Lexington, Okla.), Vol. 11, No. 13, Ed. 1 Thursday, July 6, 2006

Weekly newspaper from Lexington, Oklahoma that includes local, state, and national news along with advertising.
Date: July 6, 2006
Creator: Edwards, Olvis
Object Type: Newspaper
System: The Gateway to Oklahoma History
Comanche Chief (Comanche, Tex.), No. 10, Ed. 1 Thursday, July 6, 2006 (open access)

Comanche Chief (Comanche, Tex.), No. 10, Ed. 1 Thursday, July 6, 2006

Weekly newspaper from Comanche, Texas that includes local, state, and national news along with advertising.
Date: July 6, 2006
Creator: Wilkerson, James C., III
Object Type: Newspaper
System: The Portal to Texas History
Polk County Enterprise (Livingston, Tex.), Vol. 124, No. 54, Ed. 1 Thursday, July 6, 2006 (open access)

Polk County Enterprise (Livingston, Tex.), Vol. 124, No. 54, Ed. 1 Thursday, July 6, 2006

Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date: July 6, 2006
Creator: White, Barbara
Object Type: Newspaper
System: The Portal to Texas History
Timpson & Tenaha News (Timpson, Tex.), Vol. 21, No. 27, Ed. 1 Thursday, July 6, 2006 (open access)

Timpson & Tenaha News (Timpson, Tex.), Vol. 21, No. 27, Ed. 1 Thursday, July 6, 2006

Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date: July 6, 2006
Creator: Alexander, Nancy
Object Type: Newspaper
System: The Portal to Texas History