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Quadrula apiculata, Specimen #923

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits a quadrate shape; moderately thick shell; white internal coloring; brown external coloring; external sculpturing in the form of pustules. Collected in the Trinity basin. The specimen measures between 60 - 100 mm in length and was assessed to be relatively-recently dead when collected.
Date: November 7, 1975
Creator: O' Kane, Kevin
Partner: Elm Fork Natural Heritage Museum

Quadrula apiculata, Specimen #924

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits a quadrate shape; moderately thick shell; white internal coloring; brown external coloring; external sculpturing in the form of pustules. Collected in the Trinity basin. The specimen measures between 60 - 100 mm in length and was assessed to be relatively-recently dead when collected.
Date: November 7, 1975
Creator: O' Kane, Kevin
Partner: Elm Fork Natural Heritage Museum

Quadrula apiculata, Specimen #925

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits a quadrate shape; moderately thick shell; white internal coloring; brown external coloring; external sculpturing in the form of pustules. Collected in the Trinity basin. The specimen measures between 60 - 100 mm in length and was assessed to be recently dead when collected.
Date: November 7, 1975
Creator: O' Kane, Kevin
Partner: Elm Fork Natural Heritage Museum

Quadrula apiculata, Specimen #926

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits a quadrate shape; moderately thick shell; white internal coloring; brown external coloring; external sculpturing in the form of pustules. Collected in the Trinity basin. The specimen measures between 60 - 100 mm in length and was assessed to be relatively-recently dead when collected.
Date: November 7, 1975
Creator: O' Kane, Kevin
Partner: Elm Fork Natural Heritage Museum

Pyganodon grandis, Specimen #730

Description: One preserved mussel specimen including the right valve only. The specimen exhibits an elliptical shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; brown external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 60 - 100 mm in length and was assessed to be relatively-recently dead when collected.
Date: November 7, 1971
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Navy Aegis Ballistic Missile Defense (BMD) Program: Background and Issues for Congress

Description: This report provides background information and issues for Congress on the Aegis ballistic missile defense (BMD) program, which is carried out by the Missile Defense Agency (MDA) and the Navy, and gives Navy Aegis cruisers and destroyers a capability for conducting BMD operations.
Date: November 7, 2014
Creator: O'Rourke, Ronald
Partner: UNT Libraries Government Documents Department

Field quality measurements of Fermilab Nb{sub 3}Sn common coil dipole model

Description: A short model of single-layer Nb{sub 3}Sn common coil magnet has been fabricated and is being tested at Fermilab. This paper summarizes results of magnetic measurements in this model. The geometrical harmonics, coil magnetization and iron saturation effects, ramp-rate dependence, field decay and the ''snap-back'' effect at injection are presented.
Date: November 7, 2003
Creator: al., Vadim Kashikhin et
Partner: UNT Libraries Government Documents Department

Frequency chirp and pulse shape effects in self-modulated laser wakefield accelerators

Description: The effect of asymmetric laser pulses on plasma wave excitation in a self-modulated laser wakefield accelerator is examined. Laser pulse shape and frequency chirp asymmetries, controlled experimentally in the laser system through a grating pair compressor, are shown to strongly enhance measured electron yields for certain asymmetries. It is shown analytically that a positive (negative) frequency chirp enhances (suppresses) the growth rate of the Raman forward scattering and near-forward Raman sidescatter instabilities, but is of minimal importance for the experimental parameters. Temporal laser pulse shapes with fast rise times (< plasma period) are shown to generate larger wakes (compared to slow rise time pulses) which seed the growth of the plasma wave, resulting in enhanced electron yield.
Date: November 7, 2002
Creator: Schroeder, C.B.; Esarey, E.; Geddes, C.G.R.; Toth, Cs.; Shadwick, B.A.; van Tilborg, J. et al.
Partner: UNT Libraries Government Documents Department

Extrapolation of supersymmetry-breaking parameters to high energy scales

Description: The author studies how well one can extrapolate the values of supersymmetry-breaking parameters to very high energy scales using future data from the Large Hadron Collider and an e{sup +}e{sup -} linear collider. He considers tests of the unification of squark and slepton masses in supergravity-inspired models. In gauge-mediated supersymmetry breaking models, he assess the ability to measure the mass scales associated with supersymmetry breaking. He also shows that it is possible to get good constraints on a scalar cubic stop-stop-Higgs couplings near the high scale. Different assumptions with varying levels of optimism about the accuracy of input parameter measurements are made, and their impact on the extrapolated results is documented.
Date: November 7, 2002
Creator: Martin, Stephen P
Partner: UNT Libraries Government Documents Department

Preliminary assessment of off-season fuels for electricity generation at Indian sugar mills

Description: This report on off-season fuels is part of a preliminary feasibility assessment to retrofit Indian sugar mills to cogenerate heat and power with sales of excess electricity to the local grid. To justify the high capital costs of retrofitting existing facilities, sugar mill operators must attempt to maximize the amount of power they sell to the local grid. This fact means that sugar mills must operate and sell power well-beyond the milling season, which typically lasts about 200 days. The purpose of this report is to assess and determine whether low cost and reliable sources of off-season fuels can be secured for two sugar mills (Simbhaoli and Daurala) within their respective sugar growing districts, located in western Uttar Pradesh. Off-season fuels under consideration include excess bagasse that is stored for off-season use, agricultural field residues (e.g., wheat straw), forest residues (e.g., bark and small limbs), and dedicated energy crops (short-rotation woody crops and herbaceous energy crops). Results of the pre-feasibility indicate that bagasse and some agricultural residues are available in sufficient quantity and may be available at reasonable cost.
Date: November 7, 1995
Creator: Perlack, R.D. & Ranney, J.W.
Partner: UNT Libraries Government Documents Department

Non-cyanide silver plating

Description: Lawrence Livermore National Laboratory (LLNL) and Technic, Inc. have entered into a CRADA (Cooperative Research and Development Agreement) with the goal of providing industry with an environmentally benign alternative to the presently used silver cyanide plating process. This project has been in place for about six months and results are quite promising. The main objective, that of deposition of deposits as thick as 125 um (5 mils), has been met. Property data such as stress and hardness have been obtained and the structure of the deposit has been analyzed via metallography and x-ray diffraction. These results will be presented in this paper, along with plans for future work.
Date: November 7, 1995
Creator: Dini, J.W.
Partner: UNT Libraries Government Documents Department

Closure of 324 Facility potential HEPA filter failure unreviewed safety questions

Description: This document summarizes the activities which occurred to resolve an Unreviewed Safety Question (USQ) for the 324 Facility [Waste Technology Engineering Laboratory] involving Potential HEPA Filter Breach. The facility ventilation system had the capacity to fail the HEPA filters during accident conditions which would totally plug the filters. The ventilation system fans were modified which lowered fan operating parameters and prevented HEPA filter failures which might occur during accident conditions.
Date: November 7, 1997
Creator: Enghusen, M.B.
Partner: UNT Libraries Government Documents Department

Audit of bus service subsidies at the Idaho National Engineering Laboratory

Description: In September 1995, the Office of Inspector General (OIG) issued the Audit of Subsidized Ancillary Services at the Nevada Test Site which concluded that the Department continued to pay high subsidies for ancillary services, including bus services, that were not used extensively, may no longer be needed, could be more fully supported by its users, or could be operated more efficiently. Consistent with the audit at Nevada, the purpose of this audit was to assess whether bus service subsidies at the Laboratory were still necessary or reasonable. Specifically, the audit determined if the current level of bus services was still needed, if operating costs could be reduced, and if users should bear a greater share of bus operations costs.
Date: November 7, 1996
Partner: UNT Libraries Government Documents Department

Benchmarking WASP5 with data from the 1991 K-Reactor tritiated aqueous release incident

Description: The Savannah River Site (SRS) has upgraded its aqueous emergency response capability to model the transport of pollutants released from SRS facilities during normal operation or accidents through onsite streams to the Savannah River. The transport and dispersion modules from the US Environmental Protection Agency (EPA) WASP5 model were incorporated into the SRS emergency response system, called the Weather Information and Display (WIND) System. WASP5 is a water quality analysis program that simulates surface water pollutant transport, using a finite difference method to solve the advective transport equation. Observed tritium concentrations in the SRS streams and the Savannah River from an accidental release from K-Reactor, one of the SRS nuclear material production reactors, were used to benchmark the new model. Although all SRS reactors have since been deactivated, this release of tritiated water occurred between December 22 and 25, 1991, through the K-Reactor secondary cooling water discharge. Analyses of reactor discharge water suggested the leak began sometime during December 22. The leak was positively identified and isolated on December 25. Following the release, tritium concentrations were tracked and measured as the tritiated water flowed from the K-Area outfall into Indian Grave Branch and pen Branch, through the Savannah River swamp, past the mouth of Steel Creek, and down the Savannah River. The measured tritium concentrations at Steel Creek, Highway 301, Becks Ferry and Abercorn Creek were used for benchmarking.
Date: November 7, 1996
Creator: Chen, K.F.
Partner: UNT Libraries Government Documents Department

Compliance of the Waste Isolation Pilot Plant with 40 CFR 194.24(b)

Description: This paper presents aspects of DOE`s demonstration of compliance with the EPA regulation of the Waste Isolation Pilot Plant (WIPP). The WIPP, a geologic repository for transuranic (TRU) waste, is located 2150 feet below the ground surface in a bedded salt formation about 20 miles east of Carlsbad, NM. Performance of the WIPP as a repository requires that releases to the accessible environment not exceed the limits of the regulation 40 CFR Part 191(1) either when the WIPP is undisturbed, or if there is intrusion into the repository by drilling. In 1996, the EPA promulgated 40 CFR Part 194(2): the implementing regulation for 40 CFR Part 191. The regulatory subsection addressed here, 40 CFR 194.24(b), directs the DOE to identify and analyze the components and characteristics of the TRU waste that can impact performance of the WIPP repository, and thereby possibly impact waste containment. DOE must also analyze those waste characteristics and components that will not affect repository performance.
Date: November 7, 1996
Creator: Chu, M. S. Y.; Papenguth, H. W. & Stockman, C. T.
Partner: UNT Libraries Government Documents Department

Audit of the Union Valley sample preparation facility at Oak Ridge

Description: This audit was initiated to determine if the US DOE`s acquisition of the Union Valley Sample Preparation Facility (UVSPF) was necessary and cost effective. To accomplish the audit objective, four actions were taken: (1) review of applicable laws and regulations, (2) analysis of procurement files for the lease and interviews of Department and contractor officials, (3) evaluation of facility justifications, and (4) assessment of workload and staffing requirements of Lockheed Martin Energy Systems` Analytical Services Organization. The audit found that Energy Systems did not base the acquisition of the UVSPF on valid mission requirements. This occurred because Energy Systems did not follow Department procedures in planning and developing the lease, and the Department approved the lease without adequate justification. It was recommended that the Manager, Oak Ridge Operations Office: (1) direct Energy Systems to follow Department policies and procedures and base acquisitions of property on valid mission requirements and an analysis of all viable alternatives; (2) direct project managers to follow Department orders and require approvals of construction projects and property leases to include (a) verification that projects are essential to meet mission requirements and (b) analysis of all viable alternatives; and (3) direct Energy Systems to give the required 365-day notice and discontinue the lease. The audit also found that Energy Systems restricted the location of the UVSPF without establishing a programmatic need for the restriction. The restriction gave an Energy Systems subcontractor a competitive advantage and may have caused the Department to pay more than necessary for the facility. It was recommended that the Manager, Oak Ridge Operations Office, direct Energy Systems to discontinue the practice of restricting facility locations unless they are justified to meet mission requirements. The audit concluded that the UVSPF was not necessary.
Date: November 7, 1997
Partner: UNT Libraries Government Documents Department

New Development in WARP: Progress Toward End-to-End Simulation

Description: The development of a high current, heavy-ion beam driver for inertial confinement fusion requires a detailed understanding of the behavior of the beam, including effects of the strong self-fields. The necessity of including the self-fields of the beam makes particle-in-cell (PIC) simulation techniques ideal, and for this reason, the multi-dimensional PIC/accelerator code WARP has been developed. WARP has been used extensively to study the creation and propagation of ion beams both in experiments and for the understanding of basic beam physics. An overview of the structure of the code will be presented along with a discussion of features that make the code an effective tool in the understanding of space-charge dominated beam behavior. Much development has been done on WARP increasing its flexibility and generality. Major additions include a generalized field description, an efficient steady-state modelling technique, a transverse slice model with a bending algorithm, further improvement of the parallel processing version, and capabilities for linking to chamber transport codes. With these additions, the capability of modeling a large scale accelerator from end-to-end comes closer to reality.
Date: November 7, 1997
Creator: Grote, D.P.; Friedman, A.; Haber, I.; Fawley, W. & Luc Vay, J.
Partner: UNT Libraries Government Documents Department

Extracting a Whisper from the DIN: A Bayesian-Inductive Approach to Learning an Anticipatory Model of Cavitation

Description: For several reasons, Bayesian parameter estimation is superior to other methods for inductively learning a model for an anticipatory system. Since it exploits prior knowledge, the analysis begins from a more advantageous starting point than other methods. Also, since "nuisance parameters" can be removed from the Bayesian analysis, the description of the model need not be as complete as is necessary for such methods as matched filtering. In the limit of perfectly random noise and a perfect description of the model, the signal-to-noise ratio improves as the square root of the number of samples in the data. Even with the imperfections of real-world data, Bayesian methods approach this ideal limit of performance more closely than other methods. These capabilities provide a strategy for addressing a major unsolved problem in pump operation: the identification of precursors of cavitation. Cavitation causes immediate degradation of pump performance and ultimate destruction of the pump. However, the most efficient point to operate a pump is just below the threshold of cavitation. It might be hoped that a straightforward method to minimize pump cavitation damage would be to simply adjust the operating point until the inception of cavitation is detected and then to slightly readjust the operating point to let the cavitation vanish. However, due to the continuously evolving state of the fluid moving through the pump, the threshold of cavitation tends to wander. What is needed is to anticipate cavitation, and this requires the detection and identification of precursor features that occur just before cavitation starts.
Date: November 7, 1999
Creator: Kercel, S.W.
Partner: UNT Libraries Government Documents Department

Steering algorithms for a small recirculating heavy-ion accelerator

Description: Beam-steering algorithms are proposed for a small recirculating induction accelerator being built at the Lawrence Livermore National Laboratory. The principal problem is that the transverse position and velocity of the beam must be inferred from capacitive position monitors, and this determination is complicated by the limited probe resolution and by the lattice errors within steering modules. The fluid/envelope code CIRCE is used to evaluate these algorithms.
Date: November 7, 1997
Creator: Sharp, W.M.; Grote, D.P. & Hemandez, G.W.
Partner: UNT Libraries Government Documents Department

High-Performance Photovoltaic Project: Identifying Critical Pathways; Kickoff Meeting

Description: The High Performance Photovoltaic Project held a Kickoff Meeting in October, 2001. This booklet contains the presentations given by subcontractors and in-house teams at that meeting. The areas of subcontracted research under the HiPer project include Polycrystalline Thin Films and Multijunction Concentrators. The in-house teams in this initiative will focus on three areas: (1) High-Performance Thin-Film Team-leads the investigation of tandem structures and low-flux concentrators, (2) High-Efficiency Concepts and Concentrators Team-an expansion of an existing team that leads the development of high-flux concentrators, and (3) Thin-Film Process Integration Team-will perform fundamental process and characterization research, to resolve the complex issues of making thin-film multijunction devices.
Date: November 7, 2001
Creator: Symko-Davis, M.
Partner: UNT Libraries Government Documents Department

Combustion Equipment Safety; BTS Technology Fact Sheet

Description: Combustion appliances that use fuels like natural gas, propane, oil, kerosene, or wood can be more efficient and effective at heating than electricity. However, careful installation is required to ensure safe and efficient operation. This fact sheet addresses problems posed by combustion equipment and provides suggestions for furnaces and water heaters, unvented space heaters and fireplaces, and stoves and ovens. Installation, combustion closet design, causes of and prevention of backdrafting are also covered.
Date: November 7, 2000
Creator: Institute, Southface Energy & Tromly, K.
Partner: UNT Libraries Government Documents Department