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495 Matching Results
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Air to Muscle and Blood/Plasma to Muscle Distribution of Volatile Organic Compounds and Drugs: Linear Free Energy Analyses
Article on air to muscle and blood/plasma to muscle distribution of volatile organic compounds and drugs and linear free energy analyses.
Date:
April 20, 2006
Creator:
Abraham, M. H. (Michael H.); Ibrahim, Adam & Acree, William E. (William Eugene)
Object Type:
Article
System:
The UNT Digital Library
Task 1 Final Report, Theoretical/Mathematical Modeling of Ultrasonic Wave Propagation in Anisotropic Polycrystalline Stainless Steels
One of the tasks of the U.S. Nuclear Regulatory Commission-sponsored project titled "Reliability of Nondestructive Examination (NDE) for Nuclear Power Plant (NPP) Inservice Examination (ISI)" is to provide collaborative assistance to Commissariat à l’Energie Atomique (CEA) in France through theoretical predictions of ultrasonic scattering by grains of cast stainless steels (CASS) components. More specifically, a mathematical treatment of ultrasonic scattering in media having duplex micro¬structure is sought because cast stainless steel components often contains larger-scale macrograins that are composed of sub-grains/colonies. In this report, we present formal mathematical theories for ultrasonic wave propagation in polycrystalline aggregates having both simple (composed of grains only) and complex microstructures (having macrograins and sub-grains/colonies). Computations based on these theories are then carried out for ultrasonic backscatter power, attenuation due to scattering, and phase velocity dispersions. Specifically, numerical results are presented for backscatter coefficient for plane longitudinal wave propagating in duplex steel containing macrograins and colonies. Furthermore, the expected propagation characteristics (attenuation coefficient and phase velocity) are computed and described in this report for plane longitudinal waves propagating in (1) steels composed of randomly oriented grains, (2) [001] aligned grains encountered in austenitic stainless steel welds and casts, and (3) duplex steels.
Date:
April 20, 2009
Creator:
Ahmed, Salahuddin & Anderson, Michael T.
Object Type:
Report
System:
The UNT Digital Library
PRODUCTION OF NEW BIOMASS/WASTE-CONTAINING SOLID FUELS
CQ Inc. and its team members (ALSTOM Power Inc., Bliss Industries, McFadden Machine Company, and industry advisors from coal-burning utilities, equipment manufacturers, and the pellet fuels industry) addressed the objectives of the Department of Energy and industry to produce economical, new solid fuels from coal, biomass, and waste materials that reduce emissions from coal-fired boilers. This project builds on the team's commercial experience in composite fuels for energy production. The electric utility industry is interested in the use of biomass and wastes as fuel to reduce both emissions and fuel costs. In addition to these benefits, utilities also recognize the business advantage of consuming the waste byproducts of customers both to retain customers and to improve the public image of the industry. Unfortunately, biomass and waste byproducts can be troublesome fuels because of low bulk density, high moisture content, variable composition, handling and feeding problems, and inadequate information about combustion and emissions characteristics. Current methods of co-firing biomass and wastes either use a separate fuel receiving, storage, and boiler feed system, or mass burn the biomass by simply mixing it with coal on the storage pile. For biomass or biomass-containing composite fuels to be extensively used in the U.S., especially …
Date:
April 20, 2001
Creator:
Akers, David J.; Shirey, Glenn A.; Zitron, Zalman & Maney, Charles Q.
Object Type:
Report
System:
The UNT Digital Library
Oral History Interview with John Alebis, April 20, 2002
The National Museum of the Pacific War presents an oral interview with John Alebis. Alebis was born in Detroit, Michigan on 7 February 1926 to immigrant Lithuanian parents. Upon entering the Army Air Forces in May 1944, he was sent to Shepherd Field, Texas for basic training. After three weeks of training he was sent to gunnery school at Las Vegas, Nevada. He describes the training he received as a gunner. Upon completion of gunnery training he was sent to Ellsworth Field, North Dakota where he was assigned to a B-17 bomber crew as right waist gunner. The crew flew a B-17 to Capital Stone, England, arriving on 5 April 1945. Upon arrival Alebis was assigned to the 398th Bomb Group, 605th Bomb Squadron. He flew three bombing missions and describes them from the beginning of the day to the return to base. Following the surrender of Germany the unit began flying survey mission over Europe and he describes the devastation he saw. On 1 June 1945 he returned to the United States and was sent to McDill Field, Florida to begin training as a gunner on a B-29. With the surrender of Japan, his training was curtailed and he …
Date:
April 20, 2002
Creator:
Alebis, John
Object Type:
Sound
System:
The Portal to Texas History
Oral History Interview with John Alebis, April 20, 2002
The National Museum of the Pacific War presents an oral interview with John Alebis. Alebis was born in Detroit, Michigan on 7 February 1926 to immigrant Lithuanian parents. Upon entering the Army Air Forces in May 1944, he was sent to Shepherd Field, Texas for basic training. After three weeks of training he was sent to gunnery school at Las Vegas, Nevada. He describes the training he received as a gunner. Upon completion of gunnery training he was sent to Ellsworth Field, North Dakota where he was assigned to a B-17 bomber crew as right waist gunner. The crew flew a B-17 to Capital Stone, England, arriving on 5 April 1945. Upon arrival Alebis was assigned to the 398th Bomb Group, 605th Bomb Squadron. He flew three bombing missions and describes them from the beginning of the day to the return to base. Following the surrender of Germany the unit began flying survey mission over Europe and he describes the devastation he saw. On 1 June 1945 he returned to the United States and was sent to McDill Field, Florida to begin training as a gunner on a B-29. With the surrender of Japan, his training was curtailed and he …
Date:
April 20, 2002
Creator:
Alebis, John
Object Type:
Text
System:
The Portal to Texas History
Small Column Ion Exchange Analysis for Removal of Cesium from SRS Low Curie Salt Solutions Using Crystalline Silicotitanate (CST) Resin
Savannah River Technology Center (SRTC) researchers modeled ion exchange removal of cesium from dissolved salt waste solutions. The results assist in evaluating proposed configurations for an ion exchange process to remove residual cesium from low curie waste streams. A process for polishing (i.e., removing small amounts) of cesium may prove useful should supernate draining fail to meet the Low Curie Salt (LCS) target limit of 0.1 Ci of Cs-137 per gallon of salt solution. Cesium loading isotherms and column breakthrough curves for Low Curie dissolved salt solutions were computed to provide performance predictions for various column designs.
Date:
April 20, 2004
Creator:
Aleman, Sebastian E. & Hamm, L. L.
Object Type:
Report
System:
The UNT Digital Library
Timpson & Tenaha News (Timpson, Tex.), Vol. 22, No. 16, Ed. 1 Thursday, April 20, 2006
Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date:
April 20, 2006
Creator:
Alexander, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
Altus Times (Altus, Okla.), Vol. 106, No. 17, Ed. 1 Tuesday, April 20, 2004
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 20, 2004
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 107, No. 17, Ed. 1 Wednesday, April 20, 2005
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 20, 2005
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Graduate Artist Certificate Recital: 2008-04-20 – Emily Aquin, violin
Recital presented at the UNT College of Music Recital Hall in partial fulfillment of the Graduate Artist Certificate in Music Performance.
Date:
April 20, 2008
Creator:
Aquin, Emily
Object Type:
Sound
System:
The UNT Digital Library
Research Administration Benchmarking Project
The National Science Foundation (NSF) is conducting a collection of baseline data that will serve as an index for describing the way in which grant applications/proposals are developed and tracked at grant recipient organizations. The type of information to be collected includes (1) estimate of burden, both time and cost, to the applicant organization (2) descriptiion of the overall development and tracking systems used by the applicant, and (3) data that can be compared after the implementation of either a streamlined paper or electronic system.
Date:
April 20, 2003
Creator:
Arnest, Paul
Object Type:
Report
System:
The UNT Digital Library
Speciation, Dissolution, and Redox Reactions of Chromium Relevant to Pretreatment and Separation of High-Level Tank Wastes
Chromium, one of the problematic elements in tank sludges, is considered the most important constituent in defining the total volume of high-level radioactive waste (HLW) glass. Current sludge washing processes (e.g. caustic leaching, 3 M NaOH) are not effective in removing Cr. This inefficient removal would result in production of an unacceptably large volume of HLW glass and thus a tremendous increase in the cost of waste disposal. This proposed research seeks to develop fundamental data for chromium (Cr) reactions that are not currently available but are essential for developing effective methodologies for removing Cr form high-level waste (HLW). Our objectives are to study (1) the dissolution of several solid phases (e.g., CrOOH, Cr2O3(c), Cr(OH)3, and Fe and Cr, binary hydroxides, identified to be important from sludge leaching studies) in highly alkaline solutions and in the presence of other electrolytes (e.g., carbonate, phosphate, sulfate, nitrite), and (2) the effect of the nature of Cr solid phases and aqueous species on their redox reactivity with a variety of potential oxidants (e.g., H2o2, persulfate, O2, and ferrate). This information will provide critical support for developing enhanced pretreatment strategies for removing Cr from HLW and will achieve a major cost reduction HLW disposal.
Date:
April 20, 2005
Creator:
B., Clark Sue; Rai, Dhanpat & Rao, Linfeng
Object Type:
Report
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 30, No. 24, Ed. 1 Friday, April 20, 2001
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
April 20, 2001
Creator:
Baldwin, Alisha
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Facility Effluent Monitoring Plan for the 325 Radiochemical Processing Laboratory
This Facility Effluent Monitoring Plan (FEMP) has been prepared for the 325 Building Radiochemical Processing Laboratory (RPL) at the Pacific Northwest National Laboratory (PNNL) to meet the requirements in the U.S. Department of Energy (DOE) Order 5400.1, ''General Environmental Protection Programs.'' This FEMP has been prepared for the RPL primarily because it has a ''major'' (potential to emit >0.1 mrem/yr) emission point for radionuclide air emissions according to the annual National Emission Standards for Hazardous Air Pollutants (NESHAP) assessment performed. This section summarizes the airborne and liquid effluents and the inventory based NESHAP assessment for the facility. The complete monitoring plan includes characterization of effluent streams, monitoring/sampling design criteria, a description of the monitoring systems and sample analysis, and quality assurance requirements.
Date:
April 20, 2001
Creator:
Ballinger, Marcel Y
Object Type:
Report
System:
The UNT Digital Library
News Bulletin (Castroville, Tex.), Vol. 42, No. 16, Ed. 1 Thursday, April 20, 2000
Weekly newspaper from Castroville, Texas that includes local, state, and national news along with extensive advertising.
Date:
April 20, 2000
Creator:
Barnes, Thomas
Object Type:
Newspaper
System:
The Portal to Texas History
Regulating Expression of Cell and Tissue Specific Genes by Modifying Trans Factors. Final technical report
None
Date:
April 20, 2000
Creator:
Beachy, Roger N. & Ghazal, Peter
Object Type:
Report
System:
The UNT Digital Library
Meat and Poultry Inspection Issues
None
Date:
April 20, 2005
Creator:
Becker, Geoffrey S.
Object Type:
Report
System:
The UNT Digital Library
On-Chip Real-Time Single-Copy Polymerase Chain Reaction in Picoliter Droplets
The first lab-on-chip system for picoliter droplet generation and PCR amplification with real-time fluorescence detection has performed PCR in isolated droplets at volumes 10{sup 6} smaller than commercial real-time PCR systems. The system utilized a shearing T-junction in a silicon device to generate a stream of monodisperse picoliter droplets that were isolated from the microfluidic channel walls and each other by the oil phase carrier. An off-chip valving system stopped the droplets on-chip, allowing them to be thermal cycled through the PCR protocol without droplet motion. With this system a 10-pL droplet, encapsulating less than one copy of viral genomic DNA through Poisson statistics, showed real-time PCR amplification curves with a cycle threshold of {approx}18, twenty cycles earlier than commercial instruments. This combination of the established real-time PCR assay with digital microfluidics is ideal for isolating single-copy nucleic acids in a complex environment.
Date:
April 20, 2007
Creator:
Beer, N. Reginald; Hindson, Benjamin J.; Wheeler, Elizabeth K.; Hall, Sara B.; Rose, Klint A.; Kennedy, Ian M. et al.
Object Type:
Article
System:
The UNT Digital Library
Numerical Simulation of a Laboratory-Scale Turbulent SlotFlame
We present three-dimensional, time-dependent simulations ofthe flowfield of a laboratory-scale slot burner. The simulations areperformed using an adaptive time-dependent low Mach number combustionalgorithm based on a second-order projection formulation that conservesboth species mass and total enthalpy. The methodology incorporatesdetailed chemical kinetics and a mixture model for differential speciesdiffusion. Methane chemistry and transport are modeled using the DRM-19mechanism along with its associated thermodynamics and transportdatabases. Adaptive mesh refinementdynamically resolves the flame andturbulent structures. Detailedcomparisons with experimental measurementsshow that the computational results provide a good prediction of theflame height, the shape of the time-averaged parabolic flame surfacearea, and the global consumption speed (the volume per second ofreactants consumed divided by the area of the time-averaged flame). Thethickness of the computed flamebrush increases in the streamwisedirection, and the flamesurface density profiles display the same generalshapes as the experiment. The structure of the simulated flame alsomatches the experiment; reaction layers are thin (typically thinner than1 mm) and the wavelengths of large wrinkles are 5--10 mm. Wrinklesamplify to become long fingers of reactants which burn through at a neckregion, forming isolated pockets of reactants. Thus both the simulatedflame and the experiment are in the "corrugated flameletregime."
Date:
April 20, 2006
Creator:
Bell, John B.; Day, Marcus S.; Grcar, Joseph F.; Lijewski,Michael J.; Driscoll, James F. & Filatyev, Sergei A.
Object Type:
Article
System:
The UNT Digital Library
Intelligence Issues for Congress
This report explores the various issues currently facing Congress in regards to intelligence and counterterrorism activities, including the Intelligence Reform and Terrorism Prevention Act (P.L. 108-458), signed in December 2004; the position of Director of National Intelligence (DNI), which that act created; the importance of collaborative efforts between various intelligence agencies to successfully carry out counterterrorism measures; and other pieces of legislation relevant to such matters.
Date:
April 20, 2009
Creator:
Best, Richard A., Jr.
Object Type:
Report
System:
The UNT Digital Library
Collisionless Reconnection Research at CMSO
This is a final report on Doe No. DE- FG02. This includes the details of collisionless reconnection in an electron-positron plasma and also nonlinear evolution of the g-mode
Date:
April 20, 2007
Creator:
Bhattacharjee, Amitava
Object Type:
Report
System:
The UNT Digital Library
The Magnetic Reconnection Code: Center for Magnetic Reconnection Studies
Understanding magnetic reconnection is one of the principal challenges in plasma physics. Reconnection is a process by which magnetic fields reconfigure themselves, releasing energy that can be converted to particle energies and bulk flows. Thanks to the availability of sophisticated diagnostics in fusion and laboratory experiments, in situ probing of magnetospheric and solar wind plasmas, and X-ray emission measurements from solar and stellar plasmas, theoretical models of magnetic reconnection can now be constrained by stringent observational tests. The members of the CMRS comprise an interdisciplinary group drawn from applied mathematics, astrophysics, computer science, fluid dynamics, plasma physics, and space science communities.
Date:
April 20, 2007
Creator:
Bhattacharjee, Amitava
Object Type:
Report
System:
The UNT Digital Library
Value-Added Tax as a New Revenue Source
This report details information regarding value-added tax as a new revenue source. Information such as background, analysis, and legislation is included.
Date:
April 20, 2006
Creator:
Bickley, James M.
Object Type:
Report
System:
The UNT Digital Library
A Value-Added Tax Contrasted With a National Sales Tax
President George W. Bush has stated that tax reform will be one of his top priorities in the 109th Congress. Some form of a value-added tax (VAT) has been frequently discussed as a replacement to the U.S. income tax system. In addition, some Members of Congress has expressed interest in the feasibility of using a value-added tax to finance health care reform.
Date:
April 20, 2006
Creator:
Bickley, James M.
Object Type:
Report
System:
The UNT Digital Library