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Improved Biomass Utilization Through Remote Flow Sensing (open access)

Improved Biomass Utilization Through Remote Flow Sensing

The growth of the livestock industry provides a valuable source of affordable, sustainable, and renewable bioenergy, while also requiring the safe disposal of the large quantities of animal wastes (manure) generated at dairy, swine, and poultry farms. If these biomass resources are mishandled and underutilized, major environmental problems will be created, such as surface and ground water contamination, odors, dust, ammonia leaching, and methane emission. Anaerobic digestion of animal wastes, in which microorganisms break down organic materials in the absence of oxygen, is one of the most promising waste treatment technologies. This process produces biogas typically containing {approx}65% methane and {approx}35% carbon dioxide. The production of biogas through anaerobic digestion from animal wastes, landfills, and municipal waste water treatment plants represents a large source of renewable and sustainable bio-fuel. Such bio-fuel can be combusted directly, used in internal combustion engines, converted into methanol, or partially oxidized to produce synthesis gas (a mixture of hydrogen and carbon monoxide) that can be converted to clean liquid fuels and chemicals via Fischer-Tropsch synthesis. Different design and mixing configurations of anaerobic digesters for treating cow manure have been utilized commercially and/or tested on a laboratory scale. These digesters include mechanically mixed, gas recirculation mixed, …
Date: March 26, 2007
Creator: Al-Dahhan, Muthanna; Varma, Rajneesh; Karim, Khursheed; Vesvikar, Mehul; Hoffman, Rebecca; Depaoli, David et al.
Object Type: Report
System: The UNT Digital Library
Does the Endangered Species Act (ESA) Listing Provide More Protection of Polar Bear?: A Look at the Special Rules (open access)

Does the Endangered Species Act (ESA) Listing Provide More Protection of Polar Bear?: A Look at the Special Rules

This report looks at the regulations surrounding the polar bear, which has been protected under the Marine Mammal Protection Act (MMPA) since 1972. The report discusses the protections, prohibitions, and special rules for polar bears as well as exceptions to the rules, habitat issues, recovery plans, and other issues regarding polar bear protections.
Date: March 26, 2009
Creator: Alexander, Kristina
Object Type: Report
System: The UNT Digital Library
Timpson & Tenaha News (Timpson, Tex.), Vol. 27, No. 12, Ed. 1 Thursday, March 26, 2009 (open access)

Timpson & Tenaha News (Timpson, Tex.), Vol. 27, No. 12, Ed. 1 Thursday, March 26, 2009

Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date: March 26, 2009
Creator: Alexander, Nancy
Object Type: Newspaper
System: The Portal to Texas History
Evaluation of ITER MSE Viewing Optics (open access)

Evaluation of ITER MSE Viewing Optics

The Motional Stark Effect (MSE) diagnostic on ITER determines the local plasma current density by measuring the polarization angle of light resulting from the interaction of a high energy neutral heating beam and the tokamak plasma. This light signal has to be transmitted from the edge and core of the plasma to a polarization analyzer located in the port plug. The optical system should either preserve the polarization information, or it should be possible to reliably calibrate any changes induced by the optics. This LLNL Work for Others project for the US ITER Project Office (USIPO) is focused on the design of the viewing optics for both the edge and core MSE systems. Several design constraints were considered, including: image quality, lack of polarization aberrations, ease of construction and cost of mirrors, neutron shielding, and geometric layout in the equatorial port plugs. The edge MSE optics are located in ITER equatorial port 3 and view Heating Beam 5, and the core system is located in equatorial port 1 viewing heating beam 4. The current work is an extension of previous preliminary design work completed by the ITER central team (ITER resources were not available to complete a detailed optimization of …
Date: March 26, 2007
Creator: Allen, S.; Lerner, S.; Morris, K.; Jayakumar, J.; Holcomb, C.; Makowski, M. et al.
Object Type: Report
System: The UNT Digital Library
The Senate Select Committee on Ethics: A Brief History of Its Evolution and Jurisdiction (open access)

The Senate Select Committee on Ethics: A Brief History of Its Evolution and Jurisdiction

None
Date: March 26, 2008
Creator: Amer, Mildred L.
Object Type: Report
System: The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 105, No. 321, Ed. 1 Friday, March 26, 2004 (open access)

Altus Times (Altus, Okla.), Vol. 105, No. 321, Ed. 1 Friday, March 26, 2004

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: March 26, 2004
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Application of Range Space Operations to Color Images (open access)

The Application of Range Space Operations to Color Images

The knowledge gained from scientific observation, experiment, and simulation is linked to the ability to analyze, understand, and manage the generated results. These abilities are increasingly at odds with the current, and future, capabilities to generate enormous quantities of raw scientific and engineering data from instruments, sensors, and computers. Many researchers are currently engaged in activities that seek to create new and novel methods for analyzing, understanding, and managing these vast collections of data. In this work, we present some of our research in addressing a particular type of problem in this broad undertaking. Much the scientific data of interest is in the form of observed, measured, or computed multivariate or multi-component vector field data--with either as physical or color data values. We are currently researching methods and techniques for working with this type of vector data through the use of a novel analysis technique. Our basic approach is to work with the vector field data in its natural physical or color space. When the data is viewed as a functional mapping of a domain, usually an index space, to a range, the physical or color values, potentially interesting characteristics of the data present themselves. These characteristics are useful in …
Date: March 26, 2002
Creator: Baldwin, Chuck & Duchaineau, Mark
Object Type: Article
System: The UNT Digital Library
Strategic Petroleum Reserve (open access)

Strategic Petroleum Reserve

None
Date: March 26, 2002
Creator: Bamberger, Robert L.
Object Type: Report
System: The UNT Digital Library
Colorado Emergency Management and Homeland Security Statutory Authorities Summarized (open access)

Colorado Emergency Management and Homeland Security Statutory Authorities Summarized

This report is one of a series that profiles the emergency management and homeland security statutory authorities of the 50 states, the District of Columbia, the Commonwealth of the Northern Mariana Islands, the Commonwealth of Puerto Rico, and three territories (American Samoa, Guam, and the U.S. Virgin Islands). Each profile identifies the more significant elements of state statutes, generally as codified. This report focuses on the state of Colorado.
Date: March 26, 2004
Creator: Bea, Keith; Runyon, L. Cheryl & Warnock, Kae M.
Object Type: Report
System: The UNT Digital Library
Florida Emergency Management and Homeland Security Statutory Authorities Summarized (open access)

Florida Emergency Management and Homeland Security Statutory Authorities Summarized

This report is one of a series that profiles the emergency management and homeland security statutory authorities of the 50 states, the District of Columbia, the Commonwealth of the Northern Mariana Islands, the Commonwealth of Puerto Rico, and three territories (American Samoa, Guam, and the U.S. Virgin Islands). Each profile identifies the more significant elements of state statutes, generally as codified. This report focuses on the state of Florida.
Date: March 26, 2004
Creator: Bea, Keith; Runyon, L. Cheryl & Warnock, Kae M.
Object Type: Report
System: The UNT Digital Library
Idaho Emergency Management and Homeland Security Statutory Authorities Summarized (open access)

Idaho Emergency Management and Homeland Security Statutory Authorities Summarized

This report is one of a series that profiles the emergency management and homeland security statutory authorities of the 50 states, the District of Columbia, the Commonwealth of the Northern Mariana Islands, the Commonwealth of Puerto Rico, and three territories (American Samoa, Guam, and the U.S. Virgin Islands). Each profile identifies the more significant elements of state statutes, generally as codified. This report focuses on the state of Idaho.
Date: March 26, 2004
Creator: Bea, Keith; Runyon, L. Cheryl & Warnock, Kae M.
Object Type: Report
System: The UNT Digital Library
Indiana Emergency Management and Homeland Security Statutory Authorities Summarized (open access)

Indiana Emergency Management and Homeland Security Statutory Authorities Summarized

This report is one of a series that profiles the emergency management and homeland security statutory authorities of the 50 states, the District of Columbia, the Commonwealth of the Northern Mariana Islands, the Commonwealth of Puerto Rico, and three territories (American Samoa, Guam, and the U.S. Virgin Islands). Each profile identifies the more significant elements of state statutes, generally as codified. This report focuses on the state of Indiana.
Date: March 26, 2004
Creator: Bea, Keith; Runyon, L. Cheryl & Warnock, Kae M.
Object Type: Report
System: The UNT Digital Library
Iowa Emergency Management and Homeland Security Authorities Summarized (open access)

Iowa Emergency Management and Homeland Security Authorities Summarized

None
Date: March 26, 2004
Creator: Bea, Keith; Runyon, L. Cheryl & Warnock, Kae M.
Object Type: Report
System: The UNT Digital Library
Iron-Based Amorphous Coatings Produced by HVOF Thermal Spray Processing-Coating Structure and Properties (open access)

Iron-Based Amorphous Coatings Produced by HVOF Thermal Spray Processing-Coating Structure and Properties

The feasibility to coat large SNF/HLW containers with a structurally amorphous material (SAM) was demonstrated on sub-scale models fabricated from Type 316L stainless steel. The sub-scale model were coated with SAM 1651 material using kerosene high velocity oxygen fuel (HVOF) torch to thicknesses ranging from 1 mm to 2 mm. The process parameters such as standoff distance, oxygen flow, and kerosene flow, were optimized in order to improve the corrosion properties of the coatings. Testing in an electrochemical cell and long-term exposure to a salt spray environment were used to guide the selection of process parameters.
Date: March 26, 2008
Creator: Beardsley, M B
Object Type: Article
System: The UNT Digital Library
Appropriations for FY2003: Energy and Water Development (open access)

Appropriations for FY2003: Energy and Water Development

Appropriations are one part of a complex federal budget process that includes budget resolutions, appropriations (regular, supplemental, and continuing) bills, rescissions, and budget reconciliation bills. This report is a guide to one of the 13 regular appropriations bills that Congress passes each year. It is designed to supplement the information provided by the House and Senate Appropriations Subcommittees on Energy and Water.
Date: March 26, 2002
Creator: Behrens, Carl E. & Humphries, Marc
Object Type: Report
System: The UNT Digital Library
Active control for turbulent premixed flame simulations (open access)

Active control for turbulent premixed flame simulations

Many turbulent premixed flames of practical interest are statistically stationary. They occur in combustors that have anchoring mechanisms to prevent blow-off and flashback. The stabilization devices often introduce a level of geometric complexity that is prohibitive for detailed computational studies of turbulent flame dynamics. As a result, typical detailed simulations are performed in simplified model configurations such as decaying isotropic turbulence or inflowing turbulence. In these configurations, the turbulence seen by the flame either decays or, in the latter case, increases as the flame accelerates toward the turbulent inflow. This limits the duration of the eddy evolutions experienced by the flame at a given level of turbulent intensity, so that statistically valid observations cannot be made. In this paper, we apply a feedback control to computationally stabilize an otherwise unstable turbulent premixed flame in two dimensions. For the simulations, we specify turbulent in flow conditions and dynamically adjust the integrated fueling rate to control the mean location of the flame in the domain. We outline the numerical procedure, and illustrate the behavior of the control algorithm. We use the simulations to study the propagation and the local chemical variability of turbulent flame chemistry.
Date: March 26, 2004
Creator: Bell, John B.; Day, Marcus S.; Grcar, Joseph F. & Lijewski, Michael J.
Object Type: Article
System: The UNT Digital Library
Advanced Dark Energy Physics Telescope (ADEPT) (open access)

Advanced Dark Energy Physics Telescope (ADEPT)

In 2006, we proposed to NASA a detailed concept study of ADEPT (the Advanced Dark Energy Physics Telescope), a potential space mission to reliably measure the time-evolution of dark energy by conducting the largest effective volume survey of the universe ever done. A peer-review panel of scientific, management, and technical experts reported back the highest possible 'excellent' rating for ADEPT. We have since made substantial advances in the scientific and technical maturity of the mission design. With this Department of Energy (DOE) award we were granted supplemental funding to support specific extended research items that were not included in the NASA proposal, many of which were intended to broadly advance future dark energy research, as laid out by the Dark Energy Task Force (DETF). The proposed work had three targets: (1) the adaptation of large-format infrared arrays to a 2 micron cut-off; (2) analytical research to improve the understanding of the dark energy figure-of- merit; and (3) extended studies of baryon acoustic oscillation systematic uncertainties. Since the actual award was only for {approx}10% of the proposed amount item (1) was dropped and item (2) work was severely restricted, consistent with the referee reviews of the proposal, although there was considerable …
Date: March 26, 2009
Creator: Bennett, Charles L.
Object Type: Report
System: The UNT Digital Library
Parallelizing a High Accuracy Hardware-Assisted Volume Renderer for Meshes with Arbitrary Polyhedra (open access)

Parallelizing a High Accuracy Hardware-Assisted Volume Renderer for Meshes with Arbitrary Polyhedra

This paper discusses the authors efforts to improve the performance of the high-accuracy (HIAC) volume rendering system, based on cell projection, which is used to display unstructured, scientific data sets for analysis. The parallelization of HIAC, using the pthreads and MPI API's, resulted in significant speedup, but interactive frame rates are not yet attainable for very large data sets.
Date: March 26, 2001
Creator: Bennett, J.; Cook, R.; Max, N.; May, D. & Williams, P.
Object Type: Article
System: The UNT Digital Library
The Rice Thresher, Vol. 91, No. 24, Ed. 1 Friday, March 26, 2004 (open access)

The Rice Thresher, Vol. 91, No. 24, Ed. 1 Friday, March 26, 2004

A weekly student newspaper from the Rice University in Houston, Texas that includes campus news and commentaries along with advertising.
Date: March 26, 2004
Creator: Berenson, Mark
Object Type: Newspaper
System: The Portal to Texas History
Dynamic effects in fragmentation reactions. (open access)

Dynamic effects in fragmentation reactions.

Fragmentation reactions offer a useful tool to study the spectroscopy of halo nuclei, but the large extent of the halo wave function makes the reaction theory more difficult. The simple reaction models based on the eikonal approximation for the nuclear interaction or first-order perturbation theory for the Coulomb interaction have systematic errors that they investigate here, comparing to the predictions of complete dynamical calculations. They find that stripping probabilities are underpredicted by the eikonal model, leading to extracted spectroscopy strengths that are two large. In contrast, the Coulomb excitation is overpredicted by the simple theory. They attribute this to a screening effect, as is well known in the Barkas effect on stopping powers. The errors decrease with beam energy as E{sub beam}{sup -1}, and are not significant at beam energies above 50 MeV/u. At lower beam energies, the effects should be taken into account when extracting quantitative spectroscopic strengths.
Date: March 26, 2002
Creator: Bertsch, G. F. & Esbensen, H.
Object Type: Article
System: The UNT Digital Library
The Discharge Rule in the House: Principal Features and Uses (open access)

The Discharge Rule in the House: Principal Features and Uses

This report provides information about the Principal Features and Uses on Discharge Rule in the House. The discharge rule allows a measure to come to the floor of considerationeven if the committee of referral does not report it and the leadership does not schedule it.
Date: March 26, 2001
Creator: Beth, Richard S.
Object Type: Report
System: The UNT Digital Library
The Discharge Rule in the House: Principal Features and Uses (open access)

The Discharge Rule in the House: Principal Features and Uses

The “discharge rule” of the House of Representatives allows a measure to come to the floor for consideration, even if the committee of referral does not report it and the leadership does not schedule it. To initiate this action, a majority of House Members must first sign a petition for that purpose. The rule permits either (1) the committee of referral to be discharged from the measure itself; or (2) the Committee on Rules to be discharged from a special rule for considering the measure. Layover periods required by the rule permit the Committee on Rules to preempt a discharge attempt, and recover control of the floor agenda, by securing adoption of an alternative special rule for considering the measure.
Date: March 26, 2001
Creator: Beth, Richard S.
Object Type: Report
System: The UNT Digital Library
Prediction of Gas Injection Performance for Heterogeneous Reservoirs (open access)

Prediction of Gas Injection Performance for Heterogeneous Reservoirs

This report was an integrated study of the physics and chemistry affecting gas injection, from the pore scale to the field scale, and involved theoretical analysis, laboratory experiments and numerical simulation. Specifically, advances were made on streamline-based simulation, analytical solutions to 1D compositional displacements, and modeling and experimental measures of three-phase flow.
Date: March 26, 2001
Creator: Blunt, M.J. & Orr, F.M. Jr.
Object Type: Report
System: The UNT Digital Library
Scanning tunneling microscopy and spectroscopy of ceramic interfaces. Technical report to the Department of Energy, Office of Basic Energy Sciences (open access)

Scanning tunneling microscopy and spectroscopy of ceramic interfaces. Technical report to the Department of Energy, Office of Basic Energy Sciences

This document reports advances made on the Penn DOE project focused on using scanning probe measurements at individual interfaces to relate nanometer scale property variation to behavior in ceramic systems. The report body summarizes annual technical accomplishments. (The details are provided in papers referenced in the appendix.) Related collaborative interactions are described, after which the project productivity is reported in terms of human resource development and publications.
Date: March 26, 2001
Creator: Bonnell, Dawn A.
Object Type: Report
System: The UNT Digital Library