EARLY ENTRANCE COPRODUCTION PLANT (open access)

EARLY ENTRANCE COPRODUCTION PLANT

The overall objective of this project is the three-phase development of an Early Entrance Coproduction Plant (EECP) that produces at least one product from at least two of the following three categories: Electric power (or heat); Fuels; and Chemicals. The objective is to have these products produced by technologies capable of using synthesis gas derived from coal and/or some other carbonaceous feedstock, such as petroleum coke. The objective of Phase I was to determine the feasibility and define the concept for the EECP located at a specific site and to develop a Research, Development, and Testing (RD and T) Plan for implementation in Phase II. This objective has now been accomplished. A specific site, Motiva Refinery in Port Arthur, Texas, has been selected as the location best suited for the EECP. The accomplishments of Phase I are discussed in detail in this Phase I Concept Report. A RD and T Plan and a preliminary project financing plan have been developed and are submitted separately from this report.
Date: May 17, 2001
Creator: Abughazaleh, John S.; Ahmed, Mushtaq; Anand, Ashok; Anderson, John H.; Benham, Charles; Brent, Fred D. et al.
Object Type: Report
System: The UNT Digital Library
PdMn and PdFe: New Materials for Temperature Measurement Near 2K (open access)

PdMn and PdFe: New Materials for Temperature Measurement Near 2K

Interest in the critical dynamics of superfluid <SUP>4</SUP> He in microgravity conditions has motivated the development of new high resolution thermometry technol- ogy for use in space experiments near 2K. The current material commonly used as the temperature sensing element for high resolution thermometers (HRTs) is copper ammonium bromide [Cu(NH<SUB>4</SUB>)<SUB>2</SUB>Br<SUB>4</SUB>2H<SUB>2</SUB>0) or "CAB", which undergoes a ferromagnetic phase transition at 1.8K1. HRTs made from CAB have demonstrated low drift (< 10fK/s) and a temperature resolu- tion of O.lnK. Unfortunately, paramagnetic salts such as CAB are difficult to prepare and handle, corrosive to most metals, and become dehydrated if kept, under vacuum conditions at room temperature. We have developed a magnetic thermometer using dilute magnetic alloys of Mn or Fe dissolved in a pure Pd matrix. These metallic thermometers are easy to fabricate, chemically inert, and mechanically robust. Unlike salts, they may be directly soldered to the stage to be measured. Also, the Curie temperature can be varied by changing the concentration of Fe or Mn, making them available for use in a wide temperature range. Susceptibility measurements, as well as preliminary noise and drifl measurements, show them, to have sub-nK resolution, with a drift of less than 10<SUP>-13</SUP> K/s.
Date: May 17, 1999
Creator: Adriaans, M. J.; Aselage, T. L.; Day, P. K.; Duncan, R. V.; Klemme, B. J. & Sergatskov, D. A.
Object Type: Article
System: The UNT Digital Library
Phase Behavior of Blends of Linear and Branched Polyethylenes on Micron-Length Scales via Ultra-Small-Angle Neutron Scattering (USANS) (open access)

Phase Behavior of Blends of Linear and Branched Polyethylenes on Micron-Length Scales via Ultra-Small-Angle Neutron Scattering (USANS)

SANS experiments on blends of linear, high density (HD) and long chain branched, low density (LD) polyethylenes indicate that these systems form a one-phase mixture in the melt. However, the maximum spatial resolution of pinhole cameras is approximately equal to 10<sup>3</sup>Å and it has therefore been suggested that data might also be interpreted as arising from a bi-phasic melt with large a particle size (~ 1 µm), because most of the scattering from the different phases would not be resolved. We have addressed this hypothesis by means of USANS experiments, which confirm that HDPEILDPE blends are homogenous in the melt on length scales up to 20 µm. We have also studied blends of HDPE and short-chain branched linear low density polyethylenes (LLDPEs), which phase separate when the branch content is sufficiently high. LLDPEs prepared with Ziegler-Natta catalysts exhibit a wide distribution of compositions, and may therefore be thought of as a �blend� of different species. When the composition distribution is broad enough, a fraction of highly branched chains may phase separate on µm-length scales, and USANS has also been used to quantify this phenomenon.
Date: May 17, 1999
Creator: Agamalian, M. M.; Alamo, R. G.; Londono, J. D.; Mandelkern, L. & Wignall, G. D.
Object Type: Article
System: The UNT Digital Library
Phase Behavior of Blends of Linear and Branched Polyethylenes via Small- and Ultra-Small Angle Neutron Scattering (open access)

Phase Behavior of Blends of Linear and Branched Polyethylenes via Small- and Ultra-Small Angle Neutron Scattering

None
Date: May 17, 1999
Creator: Agamalian, M. M.; Alamo, R. G.; Londono, J. D.; Mandelkern, L.; Stehling, F. C. & Wignall, G. D.
Object Type: Article
System: The UNT Digital Library
Wheel-Operated Lift Mechanism (open access)

Wheel-Operated Lift Mechanism

Patent for a wheel operated lift mechanism designed for agricultural implements with wheels which can raise the frame of the agricultural implement for easy access to the wheel. This tool is adjustable to raise or lower the frame for easy access to the wheel to disconnect it.
Date: May 17, 1921
Creator: Altgelt, Herman E.
Object Type: Patent
System: The Portal to Texas History
Rail-Joint (open access)

Rail-Joint

Patent for improvements in the construction and design of rail-joints.
Date: May 17, 1887
Creator: Anderson, Lee
Object Type: Patent
System: The Portal to Texas History
Fast Neutron Damage Studies on NdFeB Materials (open access)

Fast Neutron Damage Studies on NdFeB Materials

Many materials and electronics need to be tested for the radiation environment expected at linear colliders (LC) since both accelerator and detectors will be subjected to large fluences of hadrons, leptons and {gamma}'s over the life of the facility [1]. While the linacs will be superconducting, there are still many uses for NdFeB in the damping rings, injection and extraction lines and final focus. Our understanding of the situation for rare earth, permanent magnet materials was presented at PAC03 [2]. Our first measurements of fast neutron, stepped doses at the UC Davis McClellan Nuclear Reactor Center (UCD MNRC) were presented at EPAC04 [3]. We have extended the doses, included other manufacturer's samples, and measured induced radioactivities which are discussed in detail.
Date: May 17, 2005
Creator: Anderson, S.; Spencer, J.; Wolf, Z.; /SLAC; Baldwin, A.; Pellett, D. et al.
Object Type: Article
System: The UNT Digital Library
Zero Energy Windows (open access)

Zero Energy Windows

Windows in the U.S. consume 30 percent of building heating and cooling energy, representing an annual impact of 4.1 quadrillion BTU (quads) of primary energy. Windows have an even larger impact on peak energy demand and on occupant comfort. An additional 1 quad of lighting energy could be saved if buildings employed effective daylighting strategies. The ENERGY STAR{reg_sign} program has made standard windows significantly more efficient. However, even if all windows in the stock were replaced with today's efficient products, window energy consumption would still be approximately 2 quads. However, windows can be ''net energy gainers'' or ''zero-energy'' products. Highly insulating products in heating applications can admit more useful solar gain than the conductive energy lost through them. Dynamic glazings can modulate solar gains to minimize cooling energy needs and, in commercial buildings, allow daylighting to offset lighting requirements. The needed solutions vary with building type and climate. Developing this next generation of zero-energy windows will provide products for both existing buildings undergoing window replacements and products which are expected to be contributors to zero-energy buildings. This paper defines the requirements for zero-energy windows. The technical potentials in terms of national energy savings and the research and development (R&amp;D) status …
Date: May 17, 2006
Creator: Arasteh, Dariush; Selkowitz, Steve; Apte, Josh & LaFrance, Marc
Object Type: Article
System: The UNT Digital Library
Railroad-Tie. (open access)

Railroad-Tie.

Patent for certain new and useful improvements in railroad-ties.
Date: May 17, 1898
Creator: Armstrong, Henry T.
Object Type: Patent
System: The Portal to Texas History
Driving Mechanism of SOL Plasma Flow and Effects on the Divertor Performance in JT-60U (open access)

Driving Mechanism of SOL Plasma Flow and Effects on the Divertor Performance in JT-60U

None
Date: May 17, 2004
Creator: Asakura, N.; Takenaga, H.; Sakurai, S.; Porter, G.; Rognlien, T.; Rensink, M. et al.
Object Type: Article
System: The UNT Digital Library
Sheep-Shears (open access)

Sheep-Shears

Patent for sheep shears. Illustrations included.
Date: May 17, 1910
Creator: Ascue, Elbert
Object Type: Patent
System: The Portal to Texas History
Gas Turbine Reheat Using in Situ Combustion: Final Report, Draft (open access)

Gas Turbine Reheat Using in Situ Combustion: Final Report, Draft

In situ reheat is an alternative to traditional gas turbine reheat design in which fuel is fed through airfoils rather than in a bulky discrete combustor separating HP and LP turbines. The goals are to achieve increased power output and/or efficiency without higher emissions. In this program the scientific basis for achieving burnout with low emissions has been explored. In Task 1, Blade Path Aerodynamics, design options were evaluated using CFD in terms of burnout, increase of power output, and possible hot streaking. It was concluded that Vane 1 injection in a conventional 4-stage turbine was preferred. Vane 2 injection after vane 1 injection was possible, but of marginal benefit. In Task 2, Combustion and Emissions, detailed chemical kinetics modeling, validated by Task 3, Sub-Scale Testing, experiments, resulted in the same conclusions, with the added conclusion that some increase in emissions was expected. In Task 4, Conceptual Design and Development Plan, Siemens Westinghouse power cycle analysis software was used to evaluate alternative in situ reheat design options. Only single stage reheat, via vane 1, was found to have merit, consistent with prior Tasks. Unifying the results of all the tasks, a conceptual design for single stage reheat utilizing 24 holes, …
Date: May 17, 2004
Creator: Bachovchin, D. M.; Lippert, T. E.; Newby, R. A. & Cizmas, P. G. A.
Object Type: Report
System: The UNT Digital Library
Sash Holder (open access)

Sash Holder

Patent for a sash holder. Illustration included.
Date: May 17, 1904
Creator: Bailey, Joseph M.
Object Type: Patent
System: The Portal to Texas History
Grading and Ditching Machine (open access)

Grading and Ditching Machine

Patent for a grading and ditching machine. Illustration included.
Date: May 17, 1904
Creator: Baker, Joseph W.
Object Type: Patent
System: The Portal to Texas History
Groundwater monitoring plan for the Hanford Site 200 Area Treated Effluent Disposal Facility (open access)

Groundwater monitoring plan for the Hanford Site 200 Area Treated Effluent Disposal Facility

Seven years of groundwater monitoring at the 200 Area Treated Effluent Disposal Facility (TEDF) have shown that the uppermost aquifer beneath the facility is unaffected by TEDF effluent. Effluent discharges have been well below permitted and expected volumes. Groundwater mounding from TEDF operations predicted by various models has not been observed, and waterlevels in TEDF wells have continued declining with the dissipation of the nearby B Pond System groundwater mound. Analytical results for constituents with enforcement limits indicate that concentrations of all these are below Practical Quantitation Limits, and some have produced no detections. Likewise, other constituents on the permit-required list have produced results that are mostly below sitewide background. Comprehensive geochemical analyses of groundwater from TEDF wells has shown that most constituents are below background levels as calculated by two Hanford Site-wide studies. Additionally, major ion proportions and anomalously low tritium activities suggest that groundwater in the aquifer beneath the TEDF has been sequestered from influences of adjoining portions of the aquifer and any discharge activities. This inference is supported by recent hydrogeologic investigations which indicate an extremely slow rate of groundwater movement beneath the TEDF. Detailed evaluation of TEDF-area hydrogeology and groundwater geochemistry indicate that additional points of …
Date: May 17, 2000
Creator: Barnett, DB
Object Type: Report
System: The UNT Digital Library
Cotton-Cultivator. (open access)

Cotton-Cultivator.

Patent for an improved cultivator used for tillage when the plows are not in the ground. The cultivator can also lighten the heaviness felt by the operator while the plow is being used.
Date: May 17, 1921
Creator: Barnett, James Samuel
Object Type: Patent
System: The Portal to Texas History
Study of factors affecting calibrations and calculations for the monochromatic x-ray absorption-edge analytical method (open access)

Study of factors affecting calibrations and calculations for the monochromatic x-ray absorption-edge analytical method

None
Date: May 17, 1974
Creator: Barringer, R. E.
Object Type: Report
System: The UNT Digital Library
Manufactured Homes Simulated Thermal Analysis and Cost Effectiveness Report. (open access)

Manufactured Homes Simulated Thermal Analysis and Cost Effectiveness Report.

In 1988 and 1989, 150 manufactured homes were built to comply with Super Good Cents (SGC) specifications adapted from the existing specifications for site-built homes under the Residential Construction Demonstration Project (RCDP). Engineering calculations and computer simulations were used to estimate the effects of the SGC specifications on the thermal performance of the homes. These results were compared with consumer costs to establish the cost-effectiveness of individual measures. Heat loss U-factors for windows, walls, floors and ceilings were established using the standard ASHRAE parallel heat flow method. Adjustments resulted in higher U-factors for ceilings and floors than assumed at the time the homes were approved as meeting the SGC specifications. Except for those homes which included heat pumps, most of the homes did not meet the SGC compliance standards. Nonetheless these homes achieved substantial reductions in overall heat loss rate (UA) compared to UAs estimated for the same homes using the standard insulation packages provided by the manufacturers in the absence of the RCDP program. Homes with conventional electric furnaces showed a 35% reduction in total UA while homes with heat pumps had a 25% reduction. A regression analysis showed no significant relationship between climate zone, manufacturer and UA. A …
Date: May 17, 1990
Creator: Baylon, David
Object Type: Report
System: The UNT Digital Library
Government Access to Phone Calling Activity and Related Records: Legal Authorities (open access)

Government Access to Phone Calling Activity and Related Records: Legal Authorities

This report summarizes statutory authorities regarding access by the Government, for either foreign intelligence or law enforcement purposes, to information related to telephone calling patterns or practices.
Date: May 17, 2006
Creator: Bazan, Elizabeth B.; Stevens, Gina Marie & Yeh, Brian T.
Object Type: Report
System: The UNT Digital Library
Application of MXCD to magnetic thin-film sensors (open access)

Application of MXCD to magnetic thin-film sensors

While Magnetic X-ray Circular Dichroism (MXCD) has been applied extensively to the extraction of elemental magnetic moments in various magnetic multilayers, the configuration of actual devices imposes certain constraints on the application of MXCD to devices. Using a set of real, thin-film spin valve devices with varying Cu spacer layer thicknesses, we demonstrate the correlation between MXCD and R-H measurements on those devices as well as the restrictions on the interpretation of MXCD data imposed by both the device topology and the formulation of realistic error estimates.
Date: May 17, 1996
Creator: Bedrossian, P. J.; Tobin, J. G.; Jankowski, Alan Frederic; Waddill, G. D.; Anthony, T. C. & Brug, J. A.
Object Type: Article
System: The UNT Digital Library
45-day safety screen results for tank 241-U-204, push mode, cores 81 and 82 (open access)

45-day safety screen results for tank 241-U-204, push mode, cores 81 and 82

This is the 45-Day report for the fiscal year 1995 tank 241-U-204 (U-204) push-mode characterization effort. Included are a summary of analytical results and copies of the differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) scans. Core samples 81 and 82 from tank U-204, obtained by the push-mode core sampling method, were received by the 222-S Laboratories. Each core consisted of only one segment. Both core samples and the field blank were extruded, subsampled, and analyzed in accordance with Reference 1. Drainable liquids and the field blank were analyzed at the segment level for energetics by DSC, percent water by TGA, and total organic carbon (TOC) by furnace oxidation. In addition, the presence or absence of any separable, presumably organic, layer in drainable liquid samples was noted and none was observed. The solids were analyzed directly at the half segment level for energetics by DSC, percent water by TGA, and TOC by persulfate oxidation. Total alpha activity was determined on fusion digestions of the sludge subsamples. No immediate notifications were necessary on samples from cores 81 or 82.
Date: May 17, 1995
Creator: Bell, Kevin E.
Object Type: Report
System: The UNT Digital Library
PEP-II Large Power Supplies Rebuild Program at SLAC (open access)

PEP-II Large Power Supplies Rebuild Program at SLAC

Seven large power supplies (LGPS) with output ratings from 72kW to 270kW power PEP-II quad magnets in the electron-positron collider region. These supplies have posed serious maintenance and reliability problems since they were installed in 1997, resulting in loss of accelerator availability. A redesign/rebuild program was undertaken by the SLAC Power Conversion Department. During the 2004 summer shutdown all the control circuits in these supplies were redesigned and replaced. A new PWM control board, programmable logic controller, and touch panel have been installed to improve LGPS reliability, and to make troubleshooting easier. In this paper we present the details of this rebuilding program and results.
Date: May 17, 2005
Creator: Bellomo, P.; Lipari, J. J.; de Lira, A. C. & Rafael, F. S.
Object Type: Article
System: The UNT Digital Library
Lessons Learned from Sandia National Laboratories' Operational Readiness Review of the Annular Core Research Reactor (ACRR) (open access)

Lessons Learned from Sandia National Laboratories' Operational Readiness Review of the Annular Core Research Reactor (ACRR)

The Sandia ACRR (a Hazard Category 2 Nuclear Reactor Facility) was defueled in June 1997 to modify the reactor core and control system to produce medical radioisotopes for the Department of Energy (DOE) Isotope Production Program. The DOE determined that an Operational Readiness Review (ORR) was required to confirm readiness to begin operations within the revised safety basis. This paper addresses the ORR Process, lessons learned from the Sandia and DOE ORRS of the ACRR, and the use of the ORR to confirm authorization basis implementation.
Date: May 17, 1999
Creator: Bendure, Albert O. & Bryson, James W.
Object Type: Article
System: The UNT Digital Library