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Performance, Thermal, and Vibration Qualification Testing of Zetec Acoustic Transducers, Model Z0002659-2, Sondicator Probes
This report is a result of Qualification Test Plan No.001 prepared by Anthony Lavietes. The Qualification Test Plan outlines a list of requirements for thermal and vibrational testing of Zetac's Z0002659-2 Sondicator Probe acoustic transducers (hereafter called ''transducers''). The Zetec transducers are used in a system that employs an array of 7 acoustic transducers. Qualification testing of these transducers was required since they are a modified version of a standard catalog item from the manufacturer. This report documents the thermal, vibrational, and performance testing that was performed on a sampling of these transducers in order to qualify them for flight. A total of 14 transducers were tested. All 14 passed qualification testing with no failures.
Date:
March 10, 2006
Creator:
Jacobson, Gerard; Gemberling, Steven & Lavietes, Anthony
Object Type:
Report
System:
The UNT Digital Library
Perry Daily Journal (Perry, Okla.), Vol. 114, No. 49, Ed. 1 Friday, March 10, 2006
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 10, 2006
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Ranger (San Antonio, Tex.), Vol. 80, No. 19, Ed. 1 Friday, March 10, 2006
Weekly student newspaper from San Antonio College in San Antonio, Texas that includes campus news along with advertising.
Date:
March 10, 2006
Creator:
San Antonio College
Object Type:
Newspaper
System:
The Portal to Texas History
Reforming of Liquid Hydrocarbons in a Novel Hydrogen-Selective Membrane-Based Fuel Processor: Final Report
In this work, asymmetric dense Pd/porous stainless steel composite membranes were fabricated by depositing palladium on the outer surface of the tubular support. The electroless plating method combined with an osmotic pressure field was used to deposit the palladium film. Surface morphology and microstructure of the composite membranes were characterized by SEM and EDX. The SEM and EDX analyses revealed strong adhesion of the plated pure palladium film on the substrate and dense coalescence of the Pd film. Membranes were further characterized by conducting permeability experiments with pure hydrogen, nitrogen, and helium gases at temperatures from 325 to 450 C and transmembrane pressure differences from 5 to 45 psi. The permeation results showed that the fabricated membranes have both high hydrogen permeability and selectivity. For example, the hydrogen permeability for a composite membrane with a 20 {micro}m Pd film was 3.02 x 10{sup -5} moles/m{sup 2}.s.Pa{sup 0.765} at 450 C. Hydrogen/nitrogen selectivity for this composite membrane was 1000 at 450 C with a transmembrane pressure difference of 14.7 psi. Steam reforming of methane is one of the most important chemical processes in hydrogen and syngas production. To investigate the usefulness of palladium-based composite membranes in membrane-reactor configuration for simultaneous production …
Date:
March 10, 2006
Creator:
Ilias, Shamsuddin
Object Type:
Report
System:
The UNT Digital Library
The Relation Between Accretion Rate And Jet Power in X-Ray Luminous Elliptical Galaxies
Using Chandra X-ray observations of nine nearby, X-ray luminous elliptical galaxies with good optical velocity dispersion measurements, we show that a tight correlation exists between the Bondi accretion rates calculated from the observed gas temperature and density profiles and estimated black hole masses, and the power emerging from these systems in relativistic jets. The jet powers, which are inferred from the energies and timescales required to inflate cavities observed in the surrounding X-ray emitting gas, can be related to the accretion rates using a power law model of the form log (P{sub Bondi}/10{sup 43} erg s{sup -1}) = A + B log (P{sub jet}/10{sup 43} erg s{sup -1}), with A = 0.62 {+-} 0.15 and B = 0.77 {+-} 0.18. Our results show that a significant fraction of the energy associated with the rest mass of material entering the Bondi accretion radius (2.4{sub -0.7}{sup +1.0} per cent, for P{sub jet} = 10{sup 43} erg s{sup -1}) eventually emerges in the relativistic jets. Our results have significant implications for studies of accretion, jet formation and galaxy formation. The observed tight correlation suggests that the Bondi formulae provide a reasonable description of the accretion process in these systems, despite the likely presence …
Date:
March 10, 2006
Creator:
Allen, Steven W.; Dunn, R. J. H.; Fabian, A. C.; Taylor, G. B. & Reynolds, C. S.
Object Type:
Report
System:
The UNT Digital Library
The Rice Thresher, Vol. 93, No. 22, Ed. 1 Friday, March 10, 2006
A weekly student newspaper from the Rice University in Houston, Texas that includes campus news and commentaries along with advertising.
Date:
March 10, 2006
Creator:
Obermeyer, Amber
Object Type:
Newspaper
System:
The Portal to Texas History
The Role of Demand Response in Default Service Pricing
Dynamic retail electricity pricing, especially real-time pricing (RTP), has been widely heralded as a panacea for providing much-needed demand response in electricity markets. However, in designing default service for competitive retail markets, demand response often appears to be an afterthought. But that may be changing as states that initiated customer choice in the past 5-7 years reach an important juncture in retail market design. Most states with retail choice established an initial transitional period, during which utilities were required to offer a default or ''standard offer'' generation service, often at a capped or otherwise administratively-determined rate. Many retail choice states have reached, or are nearing, the end of their transitional period and several states have adopted an RTP-type default service for large commercial and industrial (C&I) customers. Are these initiatives motivated by the desire to induce greater demand response, or is RTP being called upon to serve a different role in competitive markets? Surprisingly, we found that in most cases, the primary reason for adopting RTP as the default service was not to encourage demand response, but rather to advance policy objectives related to the development of competitive retail markets. However, we also find that, if efforts are made in …
Date:
March 10, 2006
Creator:
Barbose, Galen; Goldman, Chuck & Neenan, Bernie
Object Type:
Article
System:
The UNT Digital Library
RPC Experience: Belle, BaBar And BESIII
In this article the performance and experience of three large RPC systems in the running/future experiments are summarized: Belle, BaBar and BESIII.
Date:
March 10, 2006
Creator:
Lu, Changguo
Object Type:
Article
System:
The UNT Digital Library
RTP as an Optional Service: It's Alive, But Is It Well?
Economists have advocated for real-time pricing (RTP) of electricity on the basis of the gains in economic efficiency that would result from charging customers the contemporaneous marginal cost of supplying electricity instead of the average cost. In recent years, RTP has also become the subject of interest in a variety of policy contexts, including integrated resource planning initiatives, ongoing efforts to improve efficiency and reliability in competitive electricity markets, and implementation of default service in states with retail choice. Most experience with RTP has been as an optional service, that is, a self-selecting alternative to the standard utility service. By our count, approximately 70 utilities in the U.S. offered an optional RTP program at some point over the past 20 years. However, many programs are now defunct. In 2003, 47 utilities in the U.S. were still offering an optional RTP program, on either a pilot or permanent basis (see Figure 1). In addition, 10 utilities in states with retail choice currently offer RTP as the default service for large customers that are not under contract with a competitive supplier. Another two utilities have received regulatory approval to do so in the next few years. Although the results of a few …
Date:
March 10, 2006
Creator:
Goldman, Charles; Barbose, Galen & Neenan, Bernie
Object Type:
Article
System:
The UNT Digital Library
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 91, No. 154, Ed. 1 Friday, March 10, 2006
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 10, 2006
Creator:
Stone, Greg
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Scene: North Texas Daily (Denton, Tex.), Vol. 90, No. 86, Ed. 1 Friday, March 10, 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:
March 10, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Sealy News (Sealy, Tex.), Vol. 119, No. 20, Ed. 1 Friday, March 10, 2006
Semiweekly newspaper from Sealy, Texas that includes local, state, and national news along with advertising.
Date:
March 10, 2006
Creator:
Griffin, Joanie & Ermis, Jay
Object Type:
Newspaper
System:
The Portal to Texas History
State's Centrally Billed Foreign Affairs Travel: Internal Control Breakdowns and Ineffective Oversight Lost Taxpayers Tens of Millions of Dollars
A letter report issued by the Government Accountability Office with an abstract that begins "The relative size of the Department of State's (State) travel program and continuing concerns about fraud, waste, and abuse in government travel card programs led to this request to audit State's centrally billed travel accounts. GAO was asked to evaluate the effectiveness of internal controls over (1) the authorization and justification of premium-class tickets charged to the centrally billed account and (2) monitoring of unused tickets, reconciling monthly statements, and maximizing performance rebates."
Date:
March 10, 2006
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Tax Benefits for Families: Changes in the Definition of a Child
None
Date:
March 10, 2006
Creator:
Scott, Christine
Object Type:
Report
System:
The UNT Digital Library
Telecommunications: States' Collection and Use of Funds for Wireless Enhanced 911 Services
A letter report issued by the Government Accountability Office with an abstract that begins ""Enhanced 911" (E911) service refers to the capability of public safety answering points to automatically receive an emergency caller's location information. An industry association estimates that nearly 82 million 911 calls are placed each year by callers using mobile phones. Wireless E911 technology provides emergency responders with the location and callback number of a person calling 911 from a mobile phone. The ENHANCE 911 Act of 2004 called for GAO to study state and local use of funds collected for the purpose of wireless E911 implementation. We are reporting on (1) the progress made in implementing wireless E911 services throughout the country, (2) the states and localities that have established taxes, fees, or charges for wireless E911 implementation, and (3) the states or localities that have used funds collected for the purposes of wireless E911 for unrelated purposes. To address these issues, we surveyed state-level E911 contacts on the collection and use of E911 funds. Of the 51 state E911 contacts (including the District of Columbia) who were asked to participate in our survey, we received 44 responses. We provided the Federal Communications Commission (FCC) with …
Date:
March 10, 2006
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Testing the Concept of Drift Shadow at Yucca Mountain, Nevada
If proven, the concept of drift shadow, a zone of reduced water content and slower ground-water travel time beneath openings in fractured rock of the unsaturated zone, may increase performance of a proposed geologic repository for high-level radioactive waste at Yucca Mountain. To test this concept under natural-flow conditions present in the proposed repository horizon, isotopes within the uranium-series decay chain (uranium-238, uranium-234, and thorium-230, or {sup 238}U-{sup 234}U-{sup 230}Th) have been analyzed in samples of rock from beneath four naturally occurring lithophysal cavities. All samples show {sup 234}U depletion relative to parent {sup 238}U, indicating varying degrees of water-rock interaction over the past million years. Variations in {sup 234}U/{sup 238}U activity ratios indicate that depletion of {sup 234}U relative to {sup 238}U can be either smaller or greater in rock beneath cavity floors relative to rock near cavity margins. These results are consistent with the concept of drift shadow and with numerical simulations of meter-scale spherical cavities in fractured tuff. Differences in distribution patterns of {sup 234}U/{sup 238}U activity ratios in rock beneath the cavity floors are interpreted to reflect differences in the amount of past seepage into lithophysal cavities, as indicated by the abundance of secondary mineral deposits …
Date:
March 10, 2006
Creator:
Paces, J. B.; Neymark, L. A.; Ghezzehei, T. & Dobson, P. F.
Object Type:
Report
System:
The UNT Digital Library
Texas Register, Volume 31, Number 10, Pages 1527-1828, March 10, 2006
A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date:
March 10, 2006
Creator:
Texas. Secretary of State.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
The Tulia Herald (Tulia, Tex.), Vol. 98, No. 10, Ed. 1 Friday, March 10, 2006
Weekly newspaper from Tulia, Texas that includes local, state, and national news along with extensive advertising.
Date:
March 10, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
U.S. Government Accountability Office: Fiscal Year 2007 Budget Request
Testimony issued by the Government Accountability Office with an abstract that begins "This testimony discusses the fiscal year 2007 budget request for the U.S. Government Accountability Office (GAO). This request will help us continue our support of the Congress in meeting its constitutional responsibilities and will help improve the performance and ensure the accountability of the federal government for the benefit of the American people. Budget constraints in the federal government grew tighter in fiscal years 2005 and 2006. In developing our fiscal year 2007 budget, we considered those constraints consistent with GAO's and the Committee's desire to "lead by example." In fiscal year 2007, we are requesting budget authority of $509.4 million, a reasonable 5 percent increase over our fiscal year 2006 revised funding level. In the event Congress acts to hold federal pay increases to 2.2 percent, our requested increase will drop to below 5 percent. This request will allow us to continue making improvements in productivity, maintain our progress in technology and other transformation areas, and support a full-time equivalent (FTE) staffing level of 3,267. This represents an increase of 50 FTEs over our planned fiscal year 2006 staffing level and will allow us to rebuild our …
Date:
March 10, 2006
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
U.S.-India Bilateral Agreements and "Global Partnership"
None
Date:
March 10, 2006
Creator:
Kronstadt, K. Alan
Object Type:
Report
System:
The UNT Digital Library
[UNT International Week Awards Banquet 2006]
A document advertising the awards banquet for the Annual Celebration of World Cultures: International Week. It includes details of the event and costs for reserving tables for sponsors.
Date:
March 10, 2006
Creator:
Schaake, Jean
Object Type:
Letter
System:
The UNT Digital Library
[UNT International Week Awards Banquet Reservation Form, 2006]
A form for people attending the International Week Awards Banquet to reserve spaces at the tables. It shows costs for a table, and individual seat costs.
Date:
March 10, 2006
Creator:
University of North Texas. Multicultural Center.
Object Type:
Text
System:
The UNT Digital Library
Uranium-Series Constraints on Subrepository Water Flow at Yucca Mountain, Nevada
Mineral abundances and whole-rock chemical and uranium-series isotopic compositions were measured in unfractured and rubble core samples from borehole USWSD-9 in the same layers of variably zeolitized tuffs that underlie the proposed nuclear waste repository at Yucca Mountain, Nevada. Uranium concentrations and isotopic compositions also were measured in pore water from core samples from the same rock units and rock leachates representing loosely bound U adsorbed on mineral surfaces or contained in readily soluble secondary minerals. The chemical and isotopic data were used to evaluate differences in water-rock interaction between fractured and unfractured rock and between fracture surfaces and rock matrix. Samples of unfractured and rubble fragments (about 1 centimeter) core and material from fracture surfaces show similar amounts of uranium-series disequilibrium, recording a complex history of sorption and loss of uranium over the past 1 million years. The data indicate that fractures in zeolitized tuffs may not have had greater amounts of water-rock interaction than the rock matrix. The data also show that rock matrix from subrepository units is capable of scavenging uranium with elevated uranium-234/uranium-238 from percolating water and that retardation of radionuclides and dose reduction may be greater than currently credited to this aspect of the natural …
Date:
March 10, 2006
Creator:
Neymark, L. A.; Paces, J. B.; Chipera, S. J. & Vaniman, D. T.
Object Type:
Report
System:
The UNT Digital Library
Venezuela: Political Conditions and U.S. Policy
None
Date:
March 10, 2006
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library