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1,782 Matching Results
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Feed System Innovation for Gasification of Locally Economical Alternative Fuels (FIGLEAF)
The Feed System Innovation for Gasification of Locally Economical Alternative Fuels (FIGLEAF) project was conducted by the Energy & Environmental Research Center and Gasification Engineering Corporation of Houston, Texas (a subsidiary of Global Energy Inc., Cincinnati, Ohio), with 80% cofunding from the U.S. Department of Energy (DOE). The goal of the project was to identify and evaluate low-value fuels that could serve as alternative feedstocks and to develop a feed system to facilitate their use in integrated gasification combined-cycle and gasification coproduction facilities. The long-term goal, to be accomplished in a subsequent project, is to install a feed system for the selected fuel(s) at Global Energy's commercial-scale 262-MW Wabash River Coal Gasification Facility in West Terre Haute, Indiana. The feasibility study undertaken for the project consisted of identifying and evaluating the economic feasibility of potential fuel sources, developing a feed system design capable of providing a fuel at 400 psig to the second stage of the E-Gas (Destec) gasifier to be cogasified with coal, performing bench- and pilot-scale testing to verify concepts and clarify decision-based options, reviewing information on high-pressure feed system designs, and determining the economics of cofeeding alternative feedstocks with the conceptual feed system design. A preliminary assessment …
Date:
February 1, 2003
Creator:
Swanson, Michael L.; Musich, Mark A.; Schmidt, Darren D. & Schultz, Joseph K.
Object Type:
Report
System:
The UNT Digital Library
Final LDRD Report for the Project Entitled: Biosensors Based on the Electrical Impedance of Tethered Lipid Bilayers on Planar Electrodes
Impedance based, planar chemical microsensors are the easiest sensors to integrate with electronics. The goal of this work is a several order of magnitude increase in the sensitivity of this sensor type. The basic idea is to mimic biological chemical sensors that rely on changes in ion transport across very thin organic membranes (supported Bilayer Membranes: sBLMs) for the sensing. To improve the durability of bilayers we show how they can be supported on planar metal electrodes. The large increase in sensitivity over polyelectrolytes will come from molecular recognition elements like antibodies that bind the analyte molecule. The molecular recognition sites can be tied to the lipid bilayer capacitor membrane and a number of mechanisms can be used to modulate the impedance of the lipid bilayers. These include coupled ion channels, pore modification and double layer capacitance modification by the analyte molecule. The planar geometry of our electrodes allows us to create arrays of sensors on the same chip, which we are calling the ''Lipid Chip''.
Date:
February 1, 2003
Creator:
HUGHES, ROBERT C.; BRANCH, DARREN W. & BROZIK, SUSAN M.
Object Type:
Report
System:
The UNT Digital Library
Final Report on LDRD Project: Heterogeneous Integration of Optoelectronic Arrays and Microelectronics
None
Date:
February 1, 2003
Creator:
Geib, Kent M.; Serkland, Darwin K.; Choquette, K. D.; Allerman, Andrew A.; Peake, Gregory M.; Hargett, Terry et al.
Object Type:
Report
System:
The UNT Digital Library
Flow heterogeneity following global no-flow ischemia in isolated rabbit heart
The purpose of this study was to evaluate flow heterogeneity and impaired reflow during reperfusion following 60 min global no-flow ischemia in the isolated rabbit heart. Radiolabeled microspheres were used to measure relative flow in small left ventricular (LV) segments in five ischemia + reperfused hearts and in five non-ischemic controls. Although variable in the post-ischemic hearts, flow heterogeneity was increased relative to pre-ischemia for the whole LV (0.92 plus or minus 0.41 vs. 0.37 plus or minus 0.07, P < 0.05) as well as the subendocardium (Endo) and subepicardium (Epi) considered separately (endo: 1.28 plus or minus 0.74 vs. 0.30 plus or minus 0.09; epi: 0.69 plus or minus 0.22 vs. 0.38 plus or minus 0.08; P < 0.05 for both comparisons) during early reperfusion. There were also segments with abnormally reduced reflow. The number of segments with abnormally reduced reflow increased as flow heterogeneity increased. Abnormally reduced reflow indicates that regional ischemia can persist despite restoration of normal global flow. In addition, the relationship between regional and global flow is altered and venous outflow is derived from regions with continued perfusion and not the whole LV. These observations emphasize the need to quantify regional reflow during reperfusion following …
Date:
February 1, 2003
Creator:
Marshall, Robert C.; Powers-Risius, Patricia; Reutter, Bryan W.; Schustz, Amy M.; Kuo, Chaincy; Huesman, Michelle K. et al.
Object Type:
Article
System:
The UNT Digital Library
[Flyer: If These Hips Could Talk]
Flyer advertising a musical produced by the Black Academy of Arts and Letters for February 11-16, 2003 at the Naomi Bruton Theater.
Date:
February 2003
Creator:
Black Academy of Arts and Letters
Object Type:
Pamphlet
System:
The UNT Digital Library
Full Scale Bioreactor Landfill for Carbon Sequestration and Greenhouse Emission Control
None
Date:
February 1, 2003
Creator:
Yazdani, Ramin; Kieffer, Jeff & Akau, Heather
Object Type:
Report
System:
The UNT Digital Library
The Gayly Oklahoman (Oklahoma City, Okla.), Vol. 21, No. 3, Ed. 1 Saturday, February 1, 2003
Semi-monthly newspaper from Oklahoma City, Oklahoma that includes local, state, and national news and advertising of interest to the Lesbian, Gay, Bisexual, and Transgender (LGBT) community.
Date:
February 1, 2003
Creator:
Hawkins, Don
Object Type:
Newspaper
System:
The UNT Digital Library
GT-MHR Commercialization Study Technical Progress and Cost Management Report: January 2003
OAK. A261. GT-MHR COMMERCIALZATION STUDY TECHNICAL PROGRESS AND COST MANAGEMENT REPORT FOR THE PERIOD JANUARY 1 THROUGH JANUARY 31, 2003
Date:
February 1, 2003
Creator:
Shenoy, A. S.
Object Type:
Report
System:
The UNT Digital Library
Heavy ion fusion sources
In Heavy-Fusion and in other applications, there is a need for high brightness sources with both high current and low emittance. The traditional design with a single monolithic source, while very successful, has significant constraints on it when going to higher currents. With the Child-Langmuir current-density limit, geometric aberration limits, and voltage breakdown limits, the area of the source becomes a high power of the current, A {approx} I{sup 8/3}. We are examining a multi-beamlet source, avoiding the constraints by having many beamlets each with low current and small area. The beamlets are created and initially accelerated separately and then merged to form a single beam. This design offers a number of potential advantages over a monolithic source, such as a smaller transverse footprint, more control over the shaping and aiming of the beam, and more flexibility in the choice of ion sources. A potential drawback, however, is the emittance that results from the merging of the beamlets. We have designed injectors using simulation that have acceptably low emittance and are beginning to examine them experimentally.
Date:
February 1, 2003
Creator:
Grote, D. P.; Kwan, J. & Westenskow, G.
Object Type:
Article
System:
The UNT Digital Library
Hellcat News, (Cincinnati, Ohio), Vol. 56, No. 6, Ed. 1, February 2003
Newsletter published by the 12th Armored Division Association, discussing news related to the activities of the U.S. Army unit and updates on previous members of the division.
Date:
February 2003
Creator:
Twelfth Armored Division Association (U.S.)
Object Type:
Newspaper
System:
The Portal to Texas History
Hickory Consortium 2001 Final Report
As with all Building America Program consortia, systems thinking is the key to understanding the processes that Hickory Consortium hopes to improve. The Hickory Consortium applies this thinking to more than the whole-building concept. Their systems thinking embraces the meta process of how housing construction takes place in America. By understanding the larger picture, they are able to identify areas where improvements can be made and how to implement them.
Date:
February 1, 2003
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
High Performance Buildings: Case Studies Database (Brochure)
This trifold brochure provides information about the High Performance Buildings Case Studies Database. It gives background information as well as reasons for using the database and how it can help professionals in the building industry.
Date:
February 1, 2003
Creator:
unknown
Object Type:
Pamphlet
System:
The UNT Digital Library
High Spatial Resolution Imaging of Inertial Fusion Target Plasmas Using Bubble Neutron Detectors, Final Report for the Period November 1, 1999 - February 28, 2001
OAK B202 HIGH SPATIAL RESOLUTION IMAGING OF INERTIAL FUSION TARGET PLASMAS USING BUBBLE NEUTRON DETECTORS. Bubble detectors, which can detect neutrons with a spatial 5 to 30 {micro}, are the most promising approach to imaging NIF target plasmas with the desired 5 {micro} spatial resolution in the target plane. Gel bubble detectors are being tested to record neutron images of ICF implosions in OMEGA experiments. By improving the noise reduction techniques used in analyzing the data taken in June 2000, we have been able to image the neutron emission from 6 {center_dot} 10{sup 13} yield DT target plasmas with a target plane spatial resolution of {approx} 140 {micro}. As expected, the spatial resolution was limited by counting statistics as a result of the low neutron detection efficiency of the easy-to-use gel bubble detectors. The results have been submitted for publication and will be the subject of an invited talk at the October 2001 Meeting of the Division of Plasma Physics of the American Physical Society. To improve the counting statistics, data was taken in May 2001 using a stack of four gel detectors and integrated over a series of up to seven high-yield DT shots. Analysis of the 2001 data …
Date:
February 1, 2003
Creator:
Fisher, R. K.
Object Type:
Report
System:
The UNT Digital Library
High Speed 2D Hadamard Transform Spectral Imager
Hadamard Transform Spectrometer (HTS) approaches share the multiplexing advantages found in Fourier transform spectrometers. Interest in Hadamard systems has been limited due to data storage/computational limitations and the inability to perform accurate high order masking in a reasonable amount of time. Advances in digital micro-mirror array (DMA) technology have opened the door to implementing an HTS for a variety of applications including fluorescent microscope imaging and Raman imaging. A Hadamard transform spectral imager (HTSI) for remote sensing offers a variety of unique capabilities in one package such as variable spectral and temporal resolution, no moving parts (other than the micro-mirrors) and vibration tolerance. Two approaches to for 2D HTS systems have been investigated in this LDRD. The first approach involves dispersing the incident light, encoding the dispersed light then recombining the light. This method is referred to as spectral encoding. The other method encodes the incident light then disperses the encoded light. The second technique is called spatial encoding. After creating optical designs for both methods the spatial encoding method was selected as the method that would be implemented because the optical design was less costly to implement.
Date:
February 1, 2003
Creator:
WEHLBURG, JOSEPH C.; WEHLBURG, CHRISTINE M.; SMITH, JODY L.; SPAHN, OLGA B.; SMITH, MARK W. & BONEY, CRAIG M.
Object Type:
Report
System:
The UNT Digital Library
High Value Scrap Tire Recycle
The objectives of this project were to further develop and scale-up a novel technology for reuse of scrap tire rubber, to identify and develop end uses for the technology (products), and to characterize the technology's energy savings and environmental impact.
Date:
February 1, 2003
Creator:
Bauman, B. D.
Object Type:
Report
System:
The UNT Digital Library
Hunter's field guide, Texas workbook, 1st edition
This book is an informative guide about hunting for Texans.
Date:
February 2003
Creator:
Texas. Parks and Wildlife Department.
Object Type:
Book
System:
The Portal to Texas History
Hydrogen Gas Generation Model for Fuel Based Remote Handled TRU Waste Stored at INEEL
The Idaho National Environmental and Engineering Laboratory (INEEL) initiated efforts to calculate the hydrogen gas generation in remote-handled transuranic (RH-TRU) containers in order to evaluate continued storage of unvented RH-TRU containers in vaults and to identify any potential problems during retrieval and aboveground storage. A computer code is developed to calculate the hydrogen concentration in the stored RH-TRU waste drums for known configuration, waste matrix, and radionuclide inventories as a function of time.
Date:
February 1, 2003
Creator:
Khericha, Soli T.; Bhatt, Rajiv N. & Liekhus, Kevin
Object Type:
Article
System:
The UNT Digital Library
Hydrologic Characterization Using Vadose Zone Monitoring Tools: Status Report
Hydrologic characterization of the vadose zone (from soil surface to the underlying water table) is needed to assess contaminant migration from buried wastes. The Pacific Northwest National Laboratory, under contract with the U. S. Department of Energy's EM-50 (Subsurface Contamination Focus Area), and in collaboration with CH2MHILL Hanford Group, the Idaho National Engineering and Environmental Laboratory (INEEL), and Duratek Federal Services (DFS), deployed a suite of vadose-zone instruments at the Hanford Site near Richland, Washington. Several new instruments were tested.
Date:
February 1, 2003
Creator:
Gee, Glendon W.; Ward, Anderson L.; Sisson, James B.; Hubbell, Joel M.; Myers, David A. & Sydnor, Harold A.
Object Type:
Report
System:
The UNT Digital Library
Identification of Larval Pacific Lampreys (Lampetra Tridentata), River Lampreys (L. Ayresi) and Western Brook Lampreys (L. Richardson) and Thermal Requirements of Early Life History Stages of Lampreys : Annual Report 2002.
Two fundamental aspects of lamprey biology were examined to provide tools for population assessment and determination of critical habitat needs of Columbia River Basin lampreys (the Pacific lamprey, Lampetra tridentata, and the western brook lamprey, L. richardsoni). In particular: (1) we examined the usefulness of current diagnostic characteristics in identification of larval lampreys, specifically pigmentation patterns, and collected material for development of meristic and morphometric descriptions of early life stages of lampreys, and (2) we examined the effects of temperature on survival and development of early life stages of Columbia River Basin lampreys.
Date:
February 1, 2003
Creator:
Meeuwig, Michael H.
Object Type:
Report
System:
The UNT Digital Library
INEEL Lead Recycling in a Moratorium Environment
Since 1999, the Idaho National Engineering and Environmental Laboratory (INEEL) Lead Project successfully recycled over 700,000 pounds of excess INEEL lead to the private sector. On February 14, 2000, the Secretary of Energy, Bill Richardson, formalized the January 12, 2000, moratorium on recycling radioactive scrap metal that prevented the unrestricted release of recycled scrap metals to the private sector. This moratorium created significant problems for the INEEL lead recycling program and associated plans; however, through the cooperative efforts of the INEEL and Idaho State University as well as innovative planning and creative thinking the recycling issues were resolved. This collaboration has recycled over 160,000 pounds of excess lead to Idaho State University with a cost savings of over $.5M.
Date:
February 1, 2003
Creator:
Kooda, Kevin Evan; Mc Cray, Casey William; Aitken, Darren William & Galloway, Kelly
Object Type:
Article
System:
The UNT Digital Library
Innovative Business Cases for Energy Storage In a Restructured Electricity Marketplace, A Study for the DOE Energy Storage Systems Program
This report describes the second phase of a project entitled ''Innovative Business Cases for Energy Storage in a Restructured Electricity Marketplace''. During part one of the effort, nine ''Stretch Scenarios'' were identified. They represented innovative and potentially significant uses of electric energy storage. Based on their potential to significantly impact the overall energy marketplace, the five most compelling scenarios were identified. From these scenarios, five specific ''Storage Market Opportunities'' (SMOs) were chosen for an in-depth evaluation in this phase. The authors conclude that some combination of the Power Cost Volatility and the T&D Benefits SMOs would be the most compelling for further investigation. Specifically, a combination of benefits (energy, capacity, power quality and reliability enhancement) achievable using energy storage systems for high value T&D applications, in regions with high power cost volatility, makes storage very competitive for about 24 GW and 120 GWh during the years of 2001 and 2010.
Date:
February 1, 2003
Creator:
IANNUCCI, JOE; EYER, JIM & BUTLER, PAUL C.
Object Type:
Report
System:
The UNT Digital Library
Integrated Microsensors for Autonomous Microrobots
This report describes the development of a miniature mobile microrobot device and several microsystems needed to create a miniature microsensor delivery platform. This work was funded under LDRD No.10785, entitled, ''Integrated Microsensors for Autonomous Microrobots''. The approach adopted in this project was to develop a mobile platform, to which would be attached wireless RF remote control and data acquisition in addition to various microsensors. A modular approach was used to produce a versatile microrobot platform and reduce power consumption and physical size.
Date:
February 1, 2003
Creator:
ADKINS, DOUGLAS R.; BYRNE, RAYMOND H.; HELLER, EDWIN J. & WOLF, JIMMIE V.
Object Type:
Report
System:
The UNT Digital Library
International Technical Working Group Round Robin Tests
The goal of nuclear forensics is to develop a preferred approach to support illicit trafficking investigations. This approach must be widely understood and accepted as credible. The principal objectives of the Round Robin Tests are to prioritize forensic techniques and methods, evaluate attribution capabilities, and examine the utility of database. The HEU (Highly Enriched Uranium) Round Robin, and previous Plutonium Round Robin, have made tremendous contributions to fulfilling these goals through a collaborative learning experience that resulted from the outstanding efforts of the nine participating internal laboratories. A prioritized list of techniques and methods has been developed based on this exercise. Current work is focused on the extent to which the techniques and methods can be generalized. The HEU Round Robin demonstrated a rather high level of capability to determine the important characteristics of the materials and processes using analytical methods. When this capability is combined with the appropriate knowledge/database, it results in a significant capability to attribute the source of the materials to a specific process or facility. A number of shortfalls were also identified in the current capabilities including procedures for non-nuclear forensics and the lack of a comprehensive network of data/knowledge bases. The results of the Round …
Date:
February 1, 2003
Creator:
Dudder, Gordon B.; Hanlen, Richard C. & Herbillion, Georges M.
Object Type:
Article
System:
The UNT Digital Library
Investigation of Explosively Driven Fragmentation of Metals - Two Dimensional Fracture and Fragmentation of Metal Shells: Progress Report II
High explosive enclosed by a metal case qualitatively describes an essential component of high energy systems of importance to the Department of Energy. Detonation of the high explosive causes intense transient pressure loading of the metal following arrival of normal or obliquely incident explosive detonation wave. Subsequent expansion and deformation of the metal case leads to eventual rupture and the opening of fractures and fissures. Details of the rupture process are critical to performance of the system. Consequently, it is essential that the material and kinematic issues governing the processes of dynamic loading and subsequent failure of an explosive-metal case component within a functioning system be adequately understood. Among the reasons are to quantify existing performance, characterize potential degradation of performance resulting from system aging, and optimizing or maintaining system performance through implementation of structural or material changes. The physical and engineering issues underlying this dynamic response and failure phenomena are not adequately understood. The purpose of the present program is to identify the key issues and develop theoretical, computational and experimental models needed to achieve a satisfactory theoretical and analysis framework for analysis of metal case failure in the explosive environment. Specific tasks within the present program include: (1) …
Date:
February 1, 2003
Creator:
Grady, D
Object Type:
Report
System:
The UNT Digital Library