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109
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58
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31
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10
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Running Gear for Motor Vehicles
Patent for running gear for motor vehicles.
Date:
February 22, 1916
Creator:
Blevins, Stphen S.
Object Type:
Patent
System:
The Portal to Texas History
PILOT TESTING OF MERCURY OXIDATION CATALYSTS FOR UPSTREAM OF WET FGD SYSTEMS
The objective of this project is to demonstrate at pilot scale the use of solid honeycomb catalysts to promote the oxidation of elemental mercury in the flue gas from coal combustion. The project is being funded by the U.S. DOE National Energy Technology Laboratory under Cooperative Agreement DE-FC26-01NT41185. EPRI, Great River Energy (GRE), and City Public Service (CPS) of San Antonio are project co-funders. URS Group is the prime contractor. The mercury catalytic oxidation process under development uses catalyst materials applied to honeycomb substrates to promote the oxidation of elemental mercury in the flue gas from coal-fired power plants that have wet lime or limestone flue gas desulfurization (FGD) systems. Oxidized mercury is removed in the wet FGD absorbers and co-precipitates in a stable form with the byproducts from the FGD system. The co-precipitated mercury does not appear to adversely affect the disposal or reuse properties of the FGD byproduct. The current project will test previously identified, effective catalyst materials at a larger, pilot scale and in a commercial form, so as to provide engineering data for future full-scale designs. The pilot-scale tests will continue for up to 14 months at each of two sites to provide longer-term catalyst life …
Date:
February 22, 2002
Creator:
Blythe, Gary M.
Object Type:
Report
System:
The UNT Digital Library
Apparatus For Forcing Fluid From Wells.
Patent for a narrow device to use fluid dynamics to remove certain fluids without loss of others. The apparatus is let down the well until one end is submerged before pressurized with air to seperate fluids and bring oil up to the surface of the well.
Date:
February 22, 1921
Creator:
Bodungen, Charles G.
Object Type:
Patent
System:
The Portal to Texas History
Adjustable Head Gate
Patent for "an adjustable gate adapted to be used in connection with irrigation ditches" (lines 10-12).
Date:
February 22, 1916
Creator:
Bogard, John H.
Object Type:
Patent
System:
The Portal to Texas History
Overview of Labor Enforcement Issues in Free Trade Agreements
This report discusses free trade agreements (FTAs) that have enforceable labor provisions, grouped into four model types. It outlines the provisions for each and identifies two types of labor enforcement issues: (1) those that relate to the FTA provisions themselves, including their definitions and their enforceability, and (2) those that relate to executive branch responsibilities, such as resource availability and determining dispute settlement case priorities. This report does not address other labor issues in the various free trade agreements, including cooperative consultation and capacity-building provisions.
Date:
February 22, 2016
Creator:
Bolle, Mary Jane
Object Type:
Report
System:
The UNT Digital Library
Effect of salt identity on the phase diagram for a globularprotein in aqueous electrolyte solution
Monte Carlo simulations are used to establish the potential of mean force between two globular proteins in an aqueous electrolyte solution. This potential includes nonelectrostatic contributions arising from dispersion forces first, between the globular proteins, and second, between ions in solution and between each ion and the globular protein. These latter contributions are missing from standard models. The potential of mean force, obtained from simulation, is fitted to an analytic equation. Using our analytic potential of mean force and Barker-Henderson perturbation theory, we obtain phase diagrams for lysozyme solutions that include stable and metastable fluid-fluid and solid-fluid phases when the electrolyte is 0.2 M NaSCN or NaI or NaCl. The nature of the electrolyte has a significant effect on the phase diagram.
Date:
February 22, 2006
Creator:
Bostrom, Mathias; Tavares, Frederico W.; Ninham, Barry W. & Prausnitz, John M.
Object Type:
Article
System:
The UNT Digital Library
FY05 LDRD Final Report Molecular Engineering of Electrodialysis Membranes 03-ERD-060
Using a combination of modeling and experimental work we have developed a new method for purifying water that uses less energy than conventional methods and that can be made selective for removing targeted contaminants. The method uses nanoporous membranes that are permselective for anion or cation transfer. Ion selectivity results from double layer overlap inside the pores such that they dominantly contain ions opposite in charge to the surface charge of the membrane. Membrane charge can be adjusted through functionalization. Experiments confirm membrane permselectivity and overall energy use less than that for conventional electrodialysis. The nanoporous membranes are used in a conventional electrodialysis configuration and can be incorporated in existing electrodialysis systems without modification. The technology merits further development and testing in real systems, and could result in a significant reduction in water treatment costs.
Date:
February 22, 2006
Creator:
Bourcier, W.; O'Brien, K.; Sawvel, A.; Johnson, M.; Bettencourt, K.; Letant, S. et al.
Object Type:
Report
System:
The UNT Digital Library
Developing models for simulation of pinched-beam dynamics in heavy ion fusion. Revision 1
For heavy-ion fusion energy applications, Mark and Yu have derived hydrodynamic models for numerical simulation of energetic pinched-beams including self-pinches and external-current pinches. These pinched-beams are applicable to beam propagation in fusion chambers and to the US High Temperature Experiment. The closure of the Mark-Yu model is obtained with adiabatic assumptions mathematically analogous to those of Chew, Goldberger, and Low for MHD. Features of this hydrodynamic beam model are compared with a kinetic treatment.
Date:
February 22, 1984
Creator:
Boyd, J. K.; Mark, J. W. K.; Sharp, W. M. & Yu, S. S.
Object Type:
Article
System:
The UNT Digital Library
Well-Drilling Machine.
Patent for an oil well drilling machine, designed to be easy to use and inexpensive to construct.
Date:
February 22, 1921
Creator:
Bradshaw, Albert Cidney
Object Type:
Patent
System:
The Portal to Texas History
Sum Frequency Generation Vibrational Spectroscopy of Pyridine Hydrogenation on Platinum Nanoparticles
Pyridine hydrogenation in the presence of a surface monolayer consisting of cubic Pt nanoparticles stabilized by tetradecyltrimethylammonium bromide (TTAB) was investigated by sum frequency generation (SFG) vibrational spectroscopy using total internal reflection (TIR) geometry. TIR-SFG spectra analysis revealed that a pyridinium cation (C{sub 5}H{sub 5}NH{sup +}) forms during pyridine hydrogenation on the Pt nanoparticle surface, and the NH group in the C{sub 5}H{sub 5}NH{sup +} cation becomes more hydrogen bound with the increase of the temperature. In addition, the surface coverage of the cation decreases with the increase of the temperature. An important contribution of this study is the in situ identification of reaction intermediates adsorbed on the Pt nanoparticle monolayer during pyridine hydrogenation.
Date:
February 22, 2008
Creator:
Bratlie, Kaitlin M.; Komvopoulos, Kyriakos & Somorjai, Gabor A.
Object Type:
Article
System:
The UNT Digital Library
Wind tunnel test of 1/30 scale heliostat field array model. Test report
From 9 January through 20 January 1978, Honeywell conducted a wind tunnel test on a 1/30 scale partial heliostat field. The heliostats were per Honeywell's design developed under the 10 megawatt central receiver pilot electrical power plant subsystem research experiment contract. Likewise, the scaled section of the field geometry duplicated the proposed circular layout. Testing was conducted at the Georgia Institute of Technology's 9 foot subsonic tunnel. The objective of the test was to ascertain from a qualitative standpoint the field effects upon wind loading within a heliostat field. To accomplish this, numerous pressure tap measurements at different heights and at different field positions were taken with varying wind speeds, fence designs, and heliostat gimbal orientations. The Department of Energy specified boundary layer profile was also scaled by 1/30 in order to simulate the total wind effects as accurately as possible taking into account the potentially severe scaling or Reynolds number effects at a 1/30 scale. After initial model set-up within the tunnel and scaled boundary layer generated, 91 separate runs were accomplished. The results do demonstrate the high sensitivity of wind loading upon the collector field due to the actual heliostat orientation and fence geometry. Vertical pressure gradients within …
Date:
February 22, 1978
Creator:
Brown, G. L.
Object Type:
Report
System:
The UNT Digital Library
Salaries of Members of Congress: Congressional Votes, 1990-2010
The U.S. Constitution, in Article I, Section 6, authorizes compensation for Members of Congress "ascertained by law, and paid out of the Treasury of the United States." Throughout American history, Congress has relied on three different methods in adjusting salaries for Members. Standalone legislation was last used to provide increases in 1990 and 1991. It was the only method used by Congress for many years. The second method, under which annual adjustments took effect automatically unless disapproved by Congress, was established in 1975. A third method for adjusting Member pay is congressional action pursuant to recommendations from the President, based on the recommendations of the Citizens' Commission on Public Service and Compensation established in the 1989 Ethics Reform Act.
Date:
February 22, 2010
Creator:
Brudnick, Ida A.
Object Type:
Report
System:
The UNT Digital Library
Fishery, Aquaculture, and Marine Mammal Legislation in the 109th Congress
Fish and marine mammals are important resources in open ocean and nearshore coastal areas. Many laws and regulations guide the management of these resources by federal agencies. This report contains information on commercial and sport fisheries, aquaculture, and marine mammals and issues related to the 109th Congress.
Date:
February 22, 2006
Creator:
Buck, Eugene H.
Object Type:
Report
System:
The UNT Digital Library
PAIRWISE BLENDING OF HIGH LEVEL WASTE (HLW)
The primary objective of this study is to demonstrate a mission scenario that uses pairwise and incidental blending of high level waste (HLW) to reduce the total mass of HLW glass. Secondary objectives include understanding how recent refinements to the tank waste inventory and solubility assumptions affect the mass of HLW glass and how logistical constraints may affect the efficacy of HLW blending.
Date:
February 22, 2006
Creator:
CERTA, P.J.
Object Type:
Report
System:
The UNT Digital Library
Transcript of Commission on Wartime Contracting in Iraq & Afghanistan Hearing: February 22, 2010
Transcript of a public hearing held by the Commission on Wartime Contracting in Iraq & Afghanistan held February 22, 2010 in Washington D.C.This hearing includes testimony from a panel of witnesses representing governmental agencies and non-governmental organizations on coordinating reconstruction and stabilization in contingency operations.
Date:
February 22, 2010
Creator:
CQ Transcriptions
Object Type:
Text
System:
The UNT Digital Library
Tritium Systems Test Facility
This TSTF proposal has two principal objectives. The first objective is to provide by mid-FY 1981 a demonstration of the fuel cycle and tritium containment systems which could be used in a Tokamak Experimental Power Reactor for operation in the mid-1980's. The second objective is to provide a capability for further optimization of tritium fuel cycle and environmental control systems beyond that which is required for the EPR. The scale and flow rates in TSTF are close to those which have been projected for a prototype experimental power reactor (PEPR/ITR) and will permit reliable extrapolation to the conditions found in an EPR. The fuel concentrations will be the same as in an EPR. Demonstrations of individual components of the deuterium-tritium fuel cycle and of monitoring, accountability and containment systems and of a maintenance methodology will be achieved at various times in the FY 1979-80 time span. Subsequent to the individual component demonstrations--which will proceed from tests with hydrogen (and/or deuterium) through tracer levels of tritium to full operational concentrations--a complete test and demonstration of the integrated fuel processing and tritium containment facility will be performed. This will occur near the middle of FY 1981. Two options were considered for the …
Date:
February 22, 1978
Creator:
Cafasso, F. A.; Maroni, V. A.; Smith, W. H.; Wilkes, W. R. & Wittenberg, L. J.
Object Type:
Report
System:
The UNT Digital Library
Longitudinal beam dynamics for heavy ion fusion using WARPrz
WARPrz is a 2.5 dimensional, cylindrically symmetric, electrostatic, particle-in-cell code. It is part of the WARP family of codes which has been developed to study heavy ion fusion driver issues. WARPrz is being used to study the longitudinal dynamics of heavy ion beams including a longitudinal instability that is driven by the impedance of the LINAC accelerating modules. This instability is of concern because it can enhance longitudinal momentum spread; chromatic abhoration in the lens system restricts the amount of momentum spread allowed in the beam in the final focusing system. The impedance of the modules is modeled by a continuum of resistors and capacitors in parallel in WARPrz. We discuss simulations of this instability including the effect of finite temperature and reflection of perturbations off the beam ends. We also discuss intermittency of axial confining fields (``ears`` fields) as a seed for this instability.
Date:
February 22, 1993
Creator:
Callahan, D. A.; Langdon, A. B.; Friedman, A. & Haber, I.
Object Type:
Article
System:
The UNT Digital Library
Modeling the Longitudinal Wall Impedance Instability in Heavy Ion Beams Using an R-Z PIC Code
The effects of the longitudinal wall impedance instability in a heavy ion beam are of great interest for heavy ion fusion drivers. We are studying this instability using the R-Z thread of the WARP PIC code. We describe the code and our model of the impedance due to the accelerating modules of the induction LINAC as a resistive wall. We present computer simulations which illustrate this instability. 2 refs., 2 figs., 1 tab.
Date:
February 22, 1991
Creator:
Callahan, D. A.; Langdon, A. B.; Friedman, A.; Grote, D. P. & Haber, I.
Object Type:
Article
System:
The UNT Digital Library
Internal wave signal processing: A model-based approach
A model-based approach is proposed to solve the oceanic internal wave signal processing problem that is based on state-space representations of the normal-mode vertical velocity and plane wave horizontal velocity propagation models. It is shown that these representations can be utilized to spatially propagate the modal (depth) vertical velocity functions given the basic parameters (wave numbers, Brunt-Vaisala frequency profile etc.) developed from the solution of the associated boundary value problem as well as the horizontal velocity components. These models are then generalized to the stochastic case where an approximate Gauss-Markov theory applies. The resulting Gauss-Markov representation, in principle, allows the inclusion of stochastic phenomena such as noise and modeling errors in a consistent manner. Based on this framework, investigations are made of model-based solutions to the signal enhancement problem for internal waves. In particular, a processor is designed that allows in situ recursive estimation of the required velocity functions. Finally, it is shown that the associated residual or so-called innovation sequence that ensues from the recursive nature of this formulation can be employed to monitor the model`s fit to the data.
Date:
February 22, 1995
Creator:
Candy, J. V. & Chambers, D. H.
Object Type:
Article
System:
The UNT Digital Library
Radial Temperature Profile of Sodium Pool Boiling Heater Assembly
The radial temperature around a sodium reactor heater assembly submerged in water is calculated using a model of the heater cross section found by conformal mapping. Thermocouple readings were also analyzed. When the heat flux is 5 x 10/sup 5/ Btu/hr-ft/sup 2/, a radial temperature drop of about 680 deg C across the center of the thermocouple well is calculated and found to be within 6% of the experimental value. Since most of this drop is across the 0.001-in. helium gap between the heater and its sleeve, it is concluded that the thermocouple will have to be bonded to the sleeve for dependable reading of true sleeve temperature. Drawings of the heater assembly and thermocouple are given. (D. L. C.)
Date:
February 22, 1960
Creator:
Cappel, H. H.
Object Type:
Report
System:
The UNT Digital Library
Strap Fastener
Patent for a strap fastener to be used for clamping devices such as harnesses, saddles, reins, and tie-straps. Illustration included.
Date:
February 22, 1910
Creator:
Carlson, Frank A. & Rhodes, L. D.
Object Type:
Patent
System:
The Portal to Texas History
Tests on conducted electrical noise on a storage ring dc-dc converter cabinet
Electrical noise is produced by switching transients in the power supply converters which excite resonances formed by stray capacitance and cable inductance. This noise is present not only on the load cables, but also on ground cables of the magnet and of the converter cabinet. Since there will eventually be a large number of cabinets running at one time, tests were carried out to characterize the noise and to investigate possible techniques for reducing the levels. The tests were carried out on the test girder and converter cabinet set up in 412 area. There were four magnets installed on the girder -- two 0.5m quadrupoles, a 0.8m quadrupole, and a sextupole. These tests were carried out on one of the 0.5m quadrupoles. It should be noted that with this setup, the raw dc power was supplied at around 70V. In the final configuration, a 0.5m quad will be fed from a 40V raw supply. Consequently, the switching transients observed during the tests are likely to be higher than will occur in reality. Noise currents contain two main components: a low frequency component at around 50kHz, and a higher frequency component at around lMHz. It is the latter component which is …
Date:
February 22, 1994
Creator:
Carwardine, J. J.
Object Type:
Report
System:
The UNT Digital Library
Innovative Confinement Concepts Workshop 2000 (Book ofAbstracts)
None
Date:
February 22, 2000
Creator:
Celata, Christine & Staff, Accelerator and Fusion Research
Object Type:
Article
System:
The UNT Digital Library
CgWind: A high-order accurate simulation tool for wind turbines and wind farms
CgWind is a high-fidelity large eddy simulation (LES) tool designed to meet the modeling needs of wind turbine and wind park engineers. This tool combines several advanced computational technologies in order to model accurately the complex and dynamic nature of wind energy applications. The composite grid approach provides high-quality structured grids for the efficient implementation of high-order accurate discretizations of the incompressible Navier-Stokes equations. Composite grids also provide a natural mechanism for modeling bodies in relative motion and complex geometry. Advanced algorithms such as matrix-free multigrid, compact discretizations and approximate factorization will allow CgWind to perform highly resolved calculations efficiently on a wide class of computing resources. Also in development are nonlinear LES subgrid-scale models required to simulate the many interacting scales present in large wind turbine applications. This paper outlines our approach, the current status of CgWind and future development plans.
Date:
February 22, 2010
Creator:
Chand, K K; Henshaw, W D; Lundquist, K A & Singer, M A
Object Type:
Article
System:
The UNT Digital Library