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The Seminole Sentinel (Seminole, Tex.), Vol. 93, No. 39, Ed. 1 Wednesday, March 1, 2000
Semiweekly newspaper from Seminole, Texas that includes local, state, and national news along with advertising.
Date:
March 1, 2000
Creator:
Dow, M. Gene & Fisher, David
Object Type:
Newspaper
System:
The Portal to Texas History
Sensor Needs and Requirements for Fuel Cells and CIDI/SIDI Engines
To reduce U.S. dependence on imported oil, improve urban air quality, and decrease greenhouse gas emissions, the Department of Energy (DOE) is developing advanced vehicle technologies and fuels. Enabling technologies for fuel cell power systems and direct-injection engines are being developed by DOE through the Partnership for a New Generation of Vehicles (PNGV), a government-industry collaboration to produce vehicles having up to three times the fuel economy of conventional mid-size automobiles. Sensors have been identified as a research and development need for both fuel cell and direct-injection systems, because current sensor technologies do not adequately meet requirements. Sensors are needed for emission control, for passenger safety and comfort, to increase system lifetime, and for system performance enhancement through feedback and control. These proceedings document the results of a workshop to define sensor requirements for proton exchange membrane (PEM) fuel cell systems and direct-injection engines for automotive applications. The recommendations from this workshop will be incorporated into the multi-year R&D plan of the DOE Office of Advanced Automotive Technologies. The objectives of the workshop were to: define the requirements for sensors; establish R&D priorities; identify the technical targets and technical barriers; and facilitate collaborations among participants. The recommendations from this workshop …
Date:
March 1, 2000
Creator:
Glass, R. S.
Object Type:
Report
System:
The UNT Digital Library
Silicon Polymer Encapsulation of High Level Calcine Waste for Transportation or Disposal
Engineers at the Idaho National Engineering and Environmental Laboratory (INEEL) are investigating the use of a proprietary silicon-polymer to encapsulate high-level calcine waste stored at the INEEL's Idaho Nuclear Technology and Engineering Center (INTEC). The silicon-polymer-encapsulated waste may be suitable for direct disposal at a radioactive waste disposal facility or for transport to an offsite melter for further processing. In connection with silicon-polymer encapsulation, the University of Akron, under special arrangement with Orbit Technologies, the originator of the Polymer Encapsulation Technology (PET), has studied a simulated waste material from INTEC called pilot-scale calcine that contains hazardous materials but no radioactive isotopes. In this study, Toxicity Characteristic Leaching Procedure (TCLP) and Materials Characterization Center Test 1P were performed to test the waste form for disposal. In addition, a maximum waste loading was established for transporting the calcine waste at INTEC to an offsite melter. For this maximum waste loading, compressive strength testing, 10-m drop testing, melt testing, and a Department of Transportation (DOT) oxidizer test were performed.
Date:
March 1, 2000
Creator:
Loomis, Guy George; Miller, Carla Jean & Kimmel, Richard John
Object Type:
Article
System:
The UNT Digital Library
Simulation of an Acoustic Helmholtz Resonator Using Computational Fluid Dynamics
None
Date:
March 1, 2000
Creator:
Broxton, M. J.; Ammerman, C. N. & Martin, R. A.
Object Type:
Article
System:
The UNT Digital Library
Simulation of Low-Enriched Uranium (LEU) Burnup in Russian VVER Reactors with the HELIOS Code Package
The HELIOS reactor-physics computer program system was used to simulate the burnup of UO{sub 2} fuel in three VVER reactors. The manner in which HELIOS was used in these simulations is described. Predictions of concentrations for actinides up to {sup 244}Cm and for isotopes of neodymium were compared with laboratory-measured values. Reasonable agreement between calculated and measured values was seen for experimental samples from a fuel rod in the interior of an assembly.
Date:
March 1, 2000
Creator:
Murphy, B. D.; Kravchenko, J.; Lazarenko, A.; Pavlovitchev, A.; Sidorenko, V. & Chetverikov, A.
Object Type:
Report
System:
The UNT Digital Library
E-Smart System for In-Situ Detection of Environmental Contaminants
A team of industrial, academic, and government organizations participated in the development of the Environmental Systems Management, Analysis and Reporting Network (E-SMART). E-SMART integrates diverse monitoring and control technologies by means of a modular, ''building block'' design approach to allow for flexible system configuration. The E-SMART network treats each smart device-whether a sensor, sampler, or actuator- as a black box that obeys the standard communication protocols and electrical interfaces for the network. This approach allows multiple vendors to produce different sensors which meet the same functional specification and which can be interchanged on the network without affecting operation. The project further developed and advanced the E-SMART standardized network protocol to include new sensors, sampling systems, and graphical user interfaces. Specifically, the E-SMART team developed the following three system elements: (1) Base technology for a new class of smart , highly sensitive, chemically-specific, in-situ, multichannel microsensors utilizing integrated optical interferometry technology, (2) A set of additional E-SMART-compatible sensors adapted from commercial off-the-shelf technologies, and (3) A Data Management and Analysis System (DMAS), including network management components and the user-friendly graphical user interface (GUI) for data evaluation and visualization.
Date:
March 1, 2000
Creator:
Leffler, S.
Object Type:
Report
System:
The UNT Digital Library
South Texas Catholic Monthly (Corpus Christi, Tex.), Vol. 35, No. 3, Ed. 1 Wednesday, March 1, 2000
Monthly newspaper from Corpus Christi, Texas published by the Diocese of Corpus Christi that includes news of interest to Diocese members along with advertising.
Date:
March 1, 2000
Creator:
Espitia, Paula
Object Type:
Newspaper
System:
The Portal to Texas History
Specific PVMaT R and D in CdTe product manufacturing: Phase 1 annual report, 5 May 1998--4 May 1999
This report documents the work performed by First Solar, LLC, during the first year of this Photovoltaic Manufacturing Technology (PVMaT) subcontract. The following milestones were successfully completed: (1) Initiate lamination development program by interviewing key suppliers and experts such as STR, Inc., ARRI, and automotive glass manufacturers; (2) Complete process specification for high-throughput laminator; (3) Initiate contact with module testing laboratory and complete preliminary module design review; (4) Complete review and survey of current environmental, health and safety (EHS) programs; (5) Complete design specifications for the high-throughput laminator; (6) Complete preliminary testing of modules; (7) Establish Qualification Testing Schedule; (8) Develop plans for critical areas of EHS improvement with the assistance of industry experts such as OSHA On-Site Consultation; (9) Begin de-bug of high-throughput laminator; (10) Initiate qualification testing on First Solar's standard modules; (11) Initiate EHS improvement projects; (12) Complete prove-in of high-throughput laminator at a rate of 30 modules per hour; (13) Complete report on lamination rates, yields, and reductions in labor and equipment costs; (14) Complete qualification testing on First Solar's standard module for IEEE 1262 and UL 1703; and (15) Complete implementation of critical EHS improvements.
Date:
March 1, 2000
Creator:
Bohland, J.; Kormanyos, K.; Faykosh, G.; Champion, V.; Cox, S.; McCarthur, M. et al.
Object Type:
Report
System:
The UNT Digital Library
Spin Tracking with Real Siberian Snakes in RHIC
N/A
Date:
March 1, 2000
Creator:
Xiao, M. & Katayama, T.
Object Type:
Report
System:
The UNT Digital Library
Stability of quasi-steady deflagrations in confined porous energetic materials
Previous analyses have shown that unconfined deflagrations propagating through both porous and nonporous energetic materials can exhibit a thermal/diffusive instability that corresponds to the onset of various oscillatory modes of combustion. For porous materials, two-phase-flow effects, associated with the motion of the gas products relative to the condensed material, play a significant role that can shift stability boundaries with respect to those associated with the nonporous problem. In the present work, additional significant effects are shown to be associated with confinement, which produces an overpressure in the burned-gas region that leads to reversal of the gas flow and hence partial permeation of the hot gases into the unburned porous material. This results in a superadiabatic effect that increases the combustion temperature and, consequently, the burning rate. Under the assumption of gas-phase quasi-steadiness, an asymptotic model is presented that facilitates a perturbation analysis of both the basic solution, corresponding to a steadily propagating planar combustion wave, and its stability. The neutral stability boundaries collapse to the previous results in the absence of confinement, but different trends arising from the presence of the gas-permeation layer are predicted for the confined problem. Whereas two-phase-flow effects are generally destabilizing in the unconfined geometry, the …
Date:
March 1, 2000
Creator:
Telengator, Alexander M.; Margolis, Stephen B. & Williams, Forman A.
Object Type:
Report
System:
The UNT Digital Library
Statistical analysis and interpretation of stratospheric ozone and temperature trends. Final technical report
The overall objective of the research conducted under this contract was to reduce uncertainties concerning anthropogenic changes to the ozone distribution, their causes, and possible climatic interactions.
Date:
March 1, 2000
Creator:
Hood, L. L.
Object Type:
Report
System:
The UNT Digital Library
STOMP Subsurface Transport Over Multiple Phases Version 2.0 Theory Guide
The U. S. Department of Energy, through the Office of Technology Development, has requested the demonstration of remediation technologies for the cleanup of volatile organic compounds and associated radionuclides within the soil and groundwater at arid sites. This demonstration program, called the VOC-Arid Soils Integrated Demonstration Program (Arid-ID), has been initially directed at a volume of unsaturated and saturated soil contaminated with carbon tetrachloride, on the Hanford Site near Richland, Washington. A principal subtask of the Arid-ID program involves the development of an integrated engineering simulator for evaluating the effectiveness and efficiency of various remediation technologies. The engineering simulator's intended users include scientists and engineers who are investigating subsurface phenomena associated with remediation technologies. Principal design goals for the engineer simulator include broad applicability, verified algorithms, quality assurance controls, and validated simulations against laboratory and field-scale experiments. An important goal for the simulator development subtask involves the ability to scale laboratory and field-scale experiments to full-scale remediation technologies, and to transfer acquired technology to other arid sites. The STOMP (Subsurface Transport Over Multiple Phases) simulator has been developed by the Pacific Northwest National Laboratory(a) for modeling remediation technologies. Information on the use, application, and theoretical basis of the STOMP simulator …
Date:
March 1, 2000
Creator:
White, M. D. & Oostrom, M.
Object Type:
Report
System:
The UNT Digital Library
Studies of nuclear processes at the Triangle Universities Nuclear Laboratory. Final report
The authors concluded their program to establish the trends of isospin mixing in nuclei ranging from {sup 12}C to {sup 40}Ca. This program revealed a systematic variation in the proton reduced widths from one A = 4N nucleus to the next as T = 0 nuclei were bombarded by protons and T = 3/2 states were populated in the compound system. In few-body physics, their program of studies of D-state properties of light nuclei ({sup 3}H, {sup 3}He, and {sup 4}He) resulted in precise determinations of the {eta} parameters for {sup 3}He and {sup 3}H which agreed well with theoretical predictions and served as an important constraint on theoretical calculations. The D{sub 2} parameter determination for {sup 4}He, carried out in collaboration with researchers at Munich and Lisbon, was not as precise but did indicate that {sup 4}He has significant deformation. A program was initiated during this period to measure the ratio of asymptotic D- to S-state normalization constant ({eta}) for {sup 6}Li at Florida State University using the ({sup 6}Li,d) reaction. They determined that the {eta} parameter for {sup 6}Li is extremely small, contrary to expectations.
Date:
March 1, 2000
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Success in Managing Waste With No Identified Path to Disposal at the INEEL
The Idaho National Engineering and Environmental Laboratory (INEEL) is aggressively managing waste with no identified path to disposal (WNPD), which was previously termed special case waste (SCW). As a result of several years of this aggressive management, the INEEL has reduced its WNPD volume from approximately 38,000 m3 in 1993 to approximately 6.33 m3 in 1999. This paper discusses how the INEEL reduced its WNPD volume. It specifically discusses the beryllium reflector waste produced from the Advanced Test Reactor (ATR) as an example of the INEEL's success in managing its WNPD. The INEEL's success in reducing its WNPD volume is the result of establishing long-range strategic objectives and consistently allocating an annual budget to implement specific work tasks that are consistent with these objectives. In addition, specific short- and long-range work tasks were developed and documented in work control documents. The work tasks are evaluated annually for consistency with the strategic objectives. Since the INEEL has successfully reduced its WNPD volume, it is now focusing on disposing of the remaining volume and preventing future generation of WNPD. As a result of this focused effort, a life-cycle disposal plan was developed for the Advanced Test Reactor (ATR) beryllium waste. This plan …
Date:
March 1, 2000
Creator:
Mullen, Carlan K.; Carboneau, Michael Leonard & Leavitt, Max Russell
Object Type:
Article
System:
The UNT Digital Library
Suppressing Intrinsic Spin Harmonics at the AGS
N/A
Date:
March 1, 2000
Creator:
Lehrach, A.; Courant, E. D.; Glenn, J. W.; Huang, H. & Roser, T.
Object Type:
Report
System:
The UNT Digital Library
Surface modification: advantages, techniques, and applications
Adequate performance of materials at elevated temperatures is a potential problem in many systems within the chemical, petroleum, process, and power-generating industries. Degradation of materials occurs because of interaction between the structural material and the exposure environment. These interactions are generally undesired chemical reactions that can lead to accelerated wastage and alter the functional requirements and/or structural integrity of the materials. Therefore, material selection for high-temperature applications must be based not only on a material strength properties but also on resistance to the complex environments prevalent in the anticipated exposure environment. As plants become larger, the satisfactory performance and reliability of components play a greater role in plant availability and economics. However, system designers are becoming increasingly concerned with finding the least expensive material that will satisfactorily perform the design function for the desired service life. This present paper addresses the benefits of surface modification and identified several criteria for selection and application of modified surfaces in the power sector. A brief review is presented on potential methods for modification of surfaces, with the emphasis on coatings. In the final section of the paper, several examples address the requirements of different energy systems and surface modification avenues that have been …
Date:
March 1, 2000
Creator:
Natesan, K.
Object Type:
Article
System:
The UNT Digital Library
Surfactant-modified diffusion on transition-metal surfaces (reprinted with the addition of the appendices)
Wanting to convert surface impurities from a nuisance to a systematically applicable nano-fabrication tool, the authors have sought to understand how such impurities affect self-diffusion on transition-metal surfaces. Their field-ion microscope experiments reveal that in the presence of surface hydrogen, self-diffusion on Rh(100) is promoted, while on Pt(100), not only is it inhibited, but its mechanism changes. First-principles calculations aimed at learning how oxygen fosters perfect layerwise growth on a growing Pt(111) crystal contradict the idea in the literature that it does so by directly promoting transport over Pt island boundaries. The discovery that its real effect is to burn off adventitious adsorbed carbon monoxide demonstrates the predictive value of state-of-the-art calculation methods.
Date:
March 1, 2000
Creator:
Feibelman, Peter J. & Kellogg, Gary Lee
Object Type:
Report
System:
The UNT Digital Library
Synthesis and Characterization of Nanowires
With the dimensions of components in microelectronic circuits shrinking, the phenomena associated with electronic conduction through wires and with device operation can be expected to change. For example, as the length of electrical conductors is reduced, ballistic transport will become the main mode of conduction. Sufficient reduction in the cross sectional area of conductors can lead to quantum confinement effects. Prior knowledge of the phenomena associated with decreasing size should help guide the designers of future, smaller devices in terms of geometry and materials. However, prior knowledge requires the availability of sufficiently small nanowires for experiments. To date, the smallest nanowires that have been fabricated and investigated had diameters of 8 nm. We propose to extend the investigation of these size-related phenomena by synthesizing, using a novel version of nuclear, or ion, track lithography and characterizing, physically and electrically, nanowires with diameters D of 1 to 5 nm and lengths L of 2 to 250 nm. Thus, by varying the dimensions of the nanowires, we will be able to determine experimentally when the ideas of macroscopic conductance break down and the conductance becomes dominated by quantum and ballistic effects. In our approach the nature of the small-diameter nanostructure formed can …
Date:
March 1, 2000
Creator:
Musket, R.G.; Felter, T. & Quong, A.
Object Type:
Report
System:
The UNT Digital Library
The Taiwan Security Enhancement Act and Underlying Issues in U.S. Policy
None
Date:
March 1, 2000
Creator:
Dumbaugh, Kerry
Object Type:
Report
System:
The UNT Digital Library
Test Plan for Measuring Ventilation Rates and Combustible Gas Levels in TWRS Active Catch Tanks
The purpose of this data collection activity is to obtain data for a screening of combustible gases in catch tanks that are currently operated by the River Protection Project (RPP). The results will be used to support closure of the flammable gas unreviewed safety question for these facilities. The data collection will be conducted in accordance with the ''Tank Safety Screening Data Quality Objective'' (Dukelow et al. 1995). Combustible gas, ammonia, and organic vapor levels in the headspace of the catch tanks will be field-measured using hand-held instruments. If a combustible gas level measurement in a tank exceeds an established threshold, vapor grab samples (i.e., Hoke and SUMMA) will be collected for laboratory analysis. In addition, ventilation rates of some catch tanks will be determine using the tracer gas injection method to evaluate removal of flammable gas by air flowing through the tanks. This test plan identifies the field tests, sample collection, laboratory analysis, quality assurance, and reporting objectives for this data collection effort. The plan also provides step-by-step direction for field measurement of combustible gas concentrations and determination of ventilation rates.
Date:
March 1, 2000
Creator:
NGUYEN, D.M.
Object Type:
Report
System:
The UNT Digital Library
Test Problems for Reactive Flow HE Model in the ALE3D Code and Limited Sensitivity Study
We document quick running test problems for a reactive flow model of HE initiation incorporated into ALE3D. A quarter percent change in projectile velocity changes the outcome from detonation to HE burn that dies down. We study the sensitivity of calculated HE behavior to several parameters of practical interest where modeling HE initiation with ALE3D.
Date:
March 1, 2000
Creator:
Gerassimenko, M.
Object Type:
Report
System:
The UNT Digital Library
Texas Attorney General Opinion: JC-188
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, John Cornyn, regarding a legal question submitted for clarification: Whether a state agency may require an employee to exhaust compensatory leave before receiving workers’ compensation benefits (RQ-0119-JC)
Date:
March 1, 2000
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
Texas Attorney General Opinion: JC-189
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, John Cornyn, regarding a legal question submitted for clarification: Whether the Texas Department of Transportation is authorized to establish the Statewide Transportation Policy Committee and the Bicycle Advisory Committee as provided in title 43, section 1.85(a)(2) and (8) of the Texas Administrative Code (RQ-0126-JC)
Date:
March 1, 2000
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
Texas Attorney General Opinion: JC-190
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, John Cornyn, regarding a legal question submitted for clarification: Whether funds allocated by section 1701.157 of the Occupations Code to local law enforcement agencies for continuing education of local law enforcement officers may be diverted to the general fund of a county or municipality (RQ-0125-JC)
Date:
March 1, 2000
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History