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Abilene Philharmonic Playbill: April 7, 1990
Program for an Abilene Philharmonic concert that ran on April 7th during the 40th season. It includes information about the pieces performed, artists and musicians, and advertising from local companies.
Date:
April 1990
Creator:
Abilene Philharmonic
Object Type:
Pamphlet
System:
The Portal to Texas History
Access to Space: The Future of U.S. Space Transportation Systems
This report is the final, summarizing report in a series of products from a broad assessment of space transportation technologies undertaken by OTA for the Senate Committee on Commerce, Science, and Transportation, and the House Committee on Science, Space, and Technology.
Date:
April 1990
Creator:
United States. Congress. Office of Technology Assessment.
Object Type:
Report
System:
The UNT Digital Library
Accident management information needs
The tables contained in this Appendix A describe the information needs for a pressurized water reactor (PWR) with a large, dry containment. To identify these information needs, the branch points in the safety objective trees were examined to decide what information is necessary to (a) determine the status of the safety functions in the plant, i.e., whether the safety functions are being adequately maintained within predetermined limits, (b) identify plant behavior (mechanisms) or precursors to this behavior which indicate that a challenge to plant safety is occurring or is imminent, and (c) select strategies that will prevent or mitigate this plant behavior and monitor the implementation and effectiveness of these strategies. The information needs for the challenges to the safety functions are not examined since the summation of the information needs for all mechanisms associated with a challenge comprise the information needs for the challenge itself.
Date:
April 1, 1990
Creator:
Hanson, D. J.; Ward, L. W.; Nelson, W. R. & Meyer, O. R. (EG and G Idaho, Inc., Idaho Falls, ID (USA))
Object Type:
Report
System:
The UNT Digital Library
Accident Management Information Needs: Methodology Development and Application to a Pressurized Water Reactor (PWR) with a Large, Dry Containment
In support of the US Nuclear Regulatory Commission (NRC) Accident Management Research Program, a methodology has been developed for identifying the plant information needs necessary for personnel involved in the management of an accident to diagnose that an accident is in progress, select and implement strategies to prevent or mitigate the accident, and monitor the effectiveness of these strategies. This report describes the methodology and presents an application of this methodology to a Pressurized Water Reactor (PWR) with a large dry containment. A risk-important severe accident sequence for a PWR is used to examine the capability of the existing measurements to supply the necessary information. The method includes an assessment of the effects of the sequence on the measurement availability including the effects of environmental conditions. The information needs and capabilities identified using this approach are also intended to form the basis for more comprehensive information needs assessment performed during the analyses and development of specific strategies for use in accident management prevention and mitigation. 3 refs., 16 figs., 7 tabs.
Date:
April 1990
Creator:
Hanson, D. J.; Ward, L. W.; Nelson, W. R. & Meyer, O. R.
Object Type:
Report
System:
The UNT Digital Library
Advanced Neutron Source (ANS) Project progress report
This report discusses the following topics on the advanced neutron source: quality assurance (QA) program; reactor core development; fuel element specification; corrosion loop tests and analyses; thermal-hydraulic loop tests; reactor control concepts; critical and subcritical experiments; material data, structural tests, and analysis; cold source development; beam tube, guide, and instrument development; hot source development; neutron transport and shielding; I C research and development; facility concepts; design; and safety.
Date:
April 1, 1990
Creator:
McBee, M. R.; Chance, C. M.; Selby, D. L.; Harrington, R. M. & Peretz, F. J.
Object Type:
Report
System:
The UNT Digital Library
The Age, Volume 11, Number 4, April 1990
Monthly publication containing information related to Chambers County, Texas, including current events of the Chambers County Historical Commission, the Wallisville Heritage Park, and the Chambers County historical and genealogical societies; reprinted newspaper articles about county events and citizens; and historical news and records.
Date:
April 1990
Creator:
Wallisville Heritage Park (Organization)
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
AIDS Update, Volume 5, Number 4, April 1990
Monthly newsletter describing news and events related to the AIDS Resource Center in Dallas, Texas as well as articles, letters, advice columns, and advertisements of interest to subscribers.
Date:
April 1990
Creator:
AIDS Resource Center (Dallas, Tex.)
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
The Allen American (Allen, Tex.), Vol. 21, No. 26, Ed. 1 Sunday, April 1, 1990
Semiweekly newspaper from Allen, Texas that includes local, state, and national news along with advertising.
Date:
April 1, 1990
Creator:
Warnken, Mark
Object Type:
Newspaper
System:
The Portal to Texas History
Altus Times (Altus, Okla.), Vol. 68, No. 78, Ed. 1 Sunday, April 1, 1990
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 1, 1990
Creator:
Lomenick, Rick
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Ampacity test of 28 AWG ribbon cables
This report contains the results of testing ribbon cables in order to determine the amount of current they can carry. In some experiments ribbon cables are used to power circuit boards and carry several amperes of current. These tests were required to establish safe operating current limits for electrical safety reviews. The basic principle behind these tests was to increase the amount of current passed through the ribbon cables until the insulation melted and the cable clearly became a fire hazard. As the current through the cable was increased the copper temperature was determined from the increased conductor resistance. The tests were done on two different types of ribbon cables. One was the flat 26 conductor 28AWG and the other was the twist and flat 26 conductor 28AWG ribbon cable, both of which are commonly used in the experiments. The flat cable was tested for current carrying capacity through three conductors and through a single conductor. The twist and flat cable was tested for current carrying capacity through a single conductor. It was found that the maximum single conductor ampacity for both cables is approximately 3A and the three conductor ampacity for the flat cable is about 10A. 4 figs., …
Date:
April 1990
Creator:
Drennan, Erika
Object Type:
Report
System:
The UNT Digital Library
Analysis and Correction of the Closed Orbit Distortion for RHIC
This is a review of the RHIC sensitivity to closed orbit distortion and of the errors that are the cause. There are four sections. In the first we review the analytical calculation of the expectation values of the distortion and we compare the results with those obtained with numerical calculation. The expected uncorrected closed orbit distortion is so large to cause some concern for day-one operation of RHIC which is discussed in the second section where methods are proposed for investigation. A summary of all possible known correction methods is given in the third section; as on can see there is still work to be done. Finally the side effects of non-vanishing closed orbit deviations in the sextupole magnets are reviewed and discussed in he last section.
Date:
April 1, 1990
Creator:
Ruggiero, Alessandro G.
Object Type:
Report
System:
The UNT Digital Library
Analysis, Volume 11, Number 4, April 1990
Periodic newsletter discussing information related to legislation, state finance, and other topics related to Texas government. This issue focuses on the Texas homestead law, including history, attempts to change it, public confusion, and more.
Date:
April 1990
Creator:
Texas Research League
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Analytical and experimental evaluation of joining silicon nitride to metal and silicon carbide to metal for advanced heat engine applications
This report summarizes the results of Phase I of Analytical and Experimental Evaluation of Joining Silicon Nitride to Metal and Silicon Carbide to Metal and Silicon Carbide to Metal for Advanced Heat Engine Applications. A general methodology was developed to optimize the joint geometry and material systems for 650 and 950{degree}C applications. Failure criteria were derived to predict the fracture of the braze and ceramic. Extensive finite element analyses (FEA), using ABAQUS code, were performed to examine various joint geometries and to evaluate the affect of different interlayers on the residual stress state. Also, material systems composed of coating materials, interlayers, and braze alloys were developed for the program based on the chemical stability and strength of the joints during processing and service. Finally, the FEA results were compared with experiments using an idealized strength relationship. The results showed that the measured strength of the joint reached 30--90% of the strength by predicted by FEA. Overall results demonstrated that FEA is an effective tool for designing the geometries of ceramic-metal joints and that joining by brazing is a relevant method for advanced heat engine applications. 33 refs., 54 figs., 36 tabs.
Date:
April 1, 1990
Creator:
Kang, S.; Selverian, J.H.; Kim, H.; O'Niel, D. & Kim, K. (GTE Labs., Inc., Waltham, MA (USA))
Object Type:
Report
System:
The UNT Digital Library
Analytical Chemistry Division annual progress report for period ending December 31, 1989
The Analytical Chemistry Division of Oak Ridge National Laboratory (ORNL) is a large and diversified organization. As such, it serves a multitude of functions for a clientele that exists both in and outside of ORNL. These functions fall into the following general categories: Analytical Research, Development and Implementation; Programmatic Research, Development, and Utilization; and Technical Support. The Analytical Chemistry Division is organized into four major sections, each which may carry out any of the three types of work mentioned above. Chapters 1 through 4 of this report highlight progress within the four sections during the period January 1 to December 31, 1989. A brief discussion of the division's role in an especially important environmental program is given in Chapter 5. Information about quality assurance, safety, and training programs is presented in Chapter 6, along with a tabulation of analyses rendered. Publications, oral presentations, professional activities, educational programs, and seminars are cited in Chapters 7 and 8. Approximately 69 articles, 41 proceedings, and 31 reports were published, and 151 oral presentations were given during this reporting period. Some 308,981 determinations were performed.
Date:
April 1, 1990
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Approach to developing a ground-motion design basis for facilities important to safety at Yucca Mountain
The Department of Energy has proposed a methodology for developing a ground-motion design basis for prospective facilities at Yucca Mountain that are important to safety. The methodology utilizes a quasi-deterministic construct that is designed to provide a conservative, robust, and reproducible estimate of ground motion that has a one-in-ten chance of occurring during the preclosure period. This estimate is intended to define a ground-motion level for which the seismic design would ensure minimal disruption to operations; engineering analyses to ensure safe performance in the unlikely event that the design basis is exceeded are a part of the proposed methodology. 8 refs.
Date:
April 1, 1990
Creator:
King, J. L.
Object Type:
Article
System:
The UNT Digital Library
Argonne National Laboratory-East Site Environmental Report for Calendar Year 1989
This report discusses the results of the environmental monitoring program at Argonne National Laboratory (ANL) for 1989. To evaluate the effects of ANL operations on the environment, samples of environmental media collected on the site, at the site boundary, and off the ANL site were analyzed and compared. A variety of radionuclides were measured in air, surface water, groundwater, soil, grass, bottom sediment, and milk samples.
Date:
April 1990
Creator:
Argonne National Laboratory
Object Type:
Report
System:
The UNT Digital Library
Aspects of meson spectroscopy with N N annihilation
We focus on the potentialities of nucleon-antinucleon ({bar N}N) annihilation as a means of producing new mesonic states. The case for the existence of quasinuclear {bar N}N bound states is discussed in detail. Strong evidence for a 2{sup ++}(0{sup +}) state of this type has been obtained at LEAR in annihilation from the p-wave (L = 1) {bar N}N system, in support of earlier sightings of this object in L = 0 annihilation at Brookhaven. In the next generation of LEAR experiments, the emphasis shifts to the search for mesons containing dynamical excitations of the gluonic field, namely glueballs and hybrids (Q{bar Q}g). We discuss some features of the masses, decay branching ratios and production mechanisms for these states, and suggest particular {bar N}N annihilation channels which are optimal for their discovery. 59 refs., 15 figs.
Date:
April 1, 1990
Creator:
Dover, C. B.
Object Type:
Article
System:
The UNT Digital Library
Basic principles and mechanisms of selective oil agglomeration
The overall objective is to determine the basic principles and mechanisms which underlie a number of selective oil agglomeration processes that have been proposed for beneficiating fine-size coal. An understanding of the basic principles and mechanisms will greatly facilitate technical development and application of such processes to various types of coal. 5 refs., 16 figs., 2 tabs.
Date:
April 1, 1990
Creator:
Wheelock, T.D.; Drzymala, J.; Allen, R. W.; Hu, Y. C.; Tyson, D. & Ziaoping, Qiu
Object Type:
Report
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 68, No. 130, Ed. 1 Sunday, April 1, 1990
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
April 1, 1990
Creator:
Brown, Leon
Object Type:
Newspaper
System:
The Portal to Texas History
Beam impedance of a split cylinder
A common geometry for position electrodes at moderately low frequencies is the capacitive pickup consisting of a diagonally- divided cylinder that encloses the beam trajectory. For the simplified system here, a relatively direct approach will given the longitudinal and transverse beam impedances (Z{parallel}and Z{perpendicular}) at low frequencies. This paper discusses the determination of this impedance.
Date:
April 1, 1990
Creator:
Lambertson, G.
Object Type:
Report
System:
The UNT Digital Library
Bench-scale reactor tests of low-temperature, catalytic gasification of wet, industrial wastes
Bench-scale reactor tests are under way at Pacific Northwest Laboratory to develop a low-temperature, catalytic gasification system. The system, licensed under the trade name Thermochemical Environmental Energy System (TEES{reg sign}), is designed for to a wide variety of feedstocks ranging from dilute organics in water to waste sludges from food processing. The current research program is focused on the use of a continuous-feed, tubular reactor. The catalyst is nickel metal on an inert support. Typical results show that feedstocks such as solutions of 2% para-cresol or 5% and 10% lactose in water or cheese whey can be processed to >99% reduction of chemical oxygen demand (COD) at a rate of up to 2 L/hr. The estimated residence time is less than 5 min at 360{degree}C and 3000 psig, not including 1 to 2 min required in the preheating zone of the reactor. The liquid hourly space velocity has been varied from 1.8 to 2.9 L feedstock/L catalyst/hr depending on the feedstock. The product fuel gas contains 40% to 55% methane, 35% to 50% carbon dioxide, and 5% to 10% hydrogen with as much as 2% ethane, but less than 0.1% ethylene or carbon monoxide, and small amounts of higher hydrocarbons. …
Date:
April 1, 1990
Creator:
Elliott, D. C.; Neuenschwander, G. G.; Baker, E. G.; Butner, R. S. & Sealock, L. J.
Object Type:
Article
System:
The UNT Digital Library
Benchmarking of energy time series
Benchmarking consists of the adjustment of time series data from one source in order to achieve agreement with similar data from a second source. The data from the latter source are referred to as the benchmark(s), and often differ in that they are observed at a lower frequency, represent a higher level of temporal aggregation, and/or are considered to be of greater accuracy. This report provides an extensive survey of benchmarking procedures which have appeared in the statistical literature, and reviews specific benchmarking procedures currently used by the Energy Information Administration (EIA). The literature survey includes a technical summary of the major benchmarking methods and their statistical properties. Factors influencing the choice and application of particular techniques are described and the impact of benchmark accuracy is discussed. EIA applications and procedures are reviewed and evaluated for residential natural gas deliveries series and coal production series. It is found that the current method of adjusting the natural gas series is consistent with the behavior of the series and the methods used in obtaining the initial data. As a result, no change is recommended. For the coal production series, a staged approach based on a first differencing technique is recommended over the …
Date:
April 1, 1990
Creator:
Williamson, M. A.
Object Type:
Report
System:
The UNT Digital Library
Beneficial effects of groundwater entry into liquid-dominated geothermal systems
In all active liquid-dominated geothermal systems there is continuous circulation of mass and transfer of heat, otherwise they would slowly cool and fade away. In the natural state these systems are in dynamic equilibrium with the surrounding colder groundwater aquifers. The ascending geothermal fluids cool conductively, boil, or mix with groundwaters, and ultimately may discharge at the surface as fumaroles or hot springs. With the start of fluid production and the lowering of reservoir pressure, the natural equilibrium is disrupted and cooler groundwater tends to enter the reservoir. Improperly constructed or damaged wells, and wells located near the margins of the geothermal system, exhibit temperature reductions (and possibly scaling from mixing of chemically distinct fluids) as the cooler-water moves into the reservoir. These negative effects, especially in peripheral wells are, however, compensated by the maintenance of reservoir pressure and a reduction in reservoir boiling that might result in mineral precipitation in the formation pores and fractures. The positive effect of cold groundwater entry on the behavior of liquid-dominated system is illustrated by using simple reservoir models. The simulation results show that even though groundwater influx into the reservoir causes cooling of fluids produced from wells located near the cold-water recharge …
Date:
April 1, 1990
Creator:
Lippmann, M.J. (Lawrence Berkeley Lab., CA (USA)) & Truesdell, A.H. (Geological Survey, Menlo Park, CA (USA))
Object Type:
Article
System:
The UNT Digital Library
Bevalac user's handbook
This report is a users manual on the Bevalac accelerator facility. This paper discuses: general information; the Bevalac and its operation; major facilities and experimental areas; and experimental equipment.
Date:
April 1, 1990
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library