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9-1-1 Caller, Volume 4, Number 4, August/September 1992
Bimonthly newsletter of the Texas Advisory Commission on State Emergency Communications discussing news and activities of the organization as well as other information related to 9-1-1 services and other emergency communication within Texas.
Date:
August 1992
Creator:
Texas. Advisory Commission on State Emergency Communications.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
A 50 mm bore superconducting dipole with a unique iron yoke structure
A 50 mm bore superconducting dipole with a thin stainless steel collar and a close in elliptical iron yoke was designed in order to obtain a high transfer function SW low saturation effects on the multipoles, and a one meter model was built and tested. Training behavior of the first 1 m model, called D19, is presented at 4.3 K and 1.8 K. At 1.8 K it reached the record field of 10.06 T. The two layer cos [theta] winding uses 30 and 36 strand cables identical to the cables of the 50 mm bore SSC dipole and it has an operating field of 6.6 T at 4.35 K with a current of 5800 A. To evaluate behavior at high fields, the mechanical structure for the model was designed for 10 T. The thin collar itself provides only a minimum prestress of 10 MPa. and the full prestress of 70 MPa is given by the iron yoke. An aluminum spacer is used to control the gap size in the vertically split iron yoke. The tapered gap in the yoke is determined by the size of the Al spacer so that during cooldown there is no loss of coil prestress and …
Date:
August 1, 1992
Creator:
Dell'Orco, D.; Caspi, S.; O'Neill, J.; Lietzke, A.; Scanlan, R.; Taylor, C. E. et al.
Object Type:
Article
System:
The UNT Digital Library
A 50 mm bore superconducting dipole with a unique iron yoke structure
A 50 mm bore superconducting dipole with a thin stainless steel collar and a close in elliptical iron yoke was designed in order to obtain a high transfer function SW low saturation effects on the multipoles, and a one meter model was built and tested. Training behavior of the first 1 m model, called D19, is presented at 4.3 K and 1.8 K. At 1.8 K it reached the record field of 10.06 T. The two layer cos {theta} winding uses 30 and 36 strand cables identical to the cables of the 50 mm bore SSC dipole and it has an operating field of 6.6 T at 4.35 K with a current of 5800 A. To evaluate behavior at high fields, the mechanical structure for the model was designed for 10 T. The thin collar itself provides only a minimum prestress of 10 MPa. and the full prestress of 70 MPa is given by the iron yoke. An aluminum spacer is used to control the gap size in the vertically split iron yoke. The tapered gap in the yoke is determined by the size of the Al spacer so that during cooldown there is no loss of coil prestress and …
Date:
August 1, 1992
Creator:
Dell`Orco, D.; Caspi, S.; O`Neill, J.; Lietzke, A.; Scanlan, R.; Taylor, C. E. et al.
Object Type:
Article
System:
The UNT Digital Library
Accelerated irradiation test of Gundremmingen reactor vessel trepan material
Initial mechanical properties tests of beltline trepanned from the decommissioned KRB-A pressure vessel and archive material irradiated in the UBR test reactor revealed a major anomaly in relative radiation embrittlement sensitivity. Poor correspondence of material behavior in test vs. power reactor environments was observed for the weak test orientation (ASTL C-L) whereas correspondence was good for the strong orientation (ASTM C-L). To resolve the anomaly directly, Charpy-V specimens from a low (essentially-nil) fluence region of the vessel were irradiated together with archive material at 279{degrees}C in the UBR test reactor. Properties tests before UBR irradiation revealed a significant difference in 41-J transition temperature and upper shelf energy level between the materials. However, the materials exhibited essentially the same radiation embrittlement sensitivity (both orientations), proving that the anomaly is not due to a basic difference in material irradiation resistances. Possible causes of the original anomaly and the significance to NRC Regulatory Guide 1.99 are discussed.
Date:
August 1, 1992
Creator:
Hawthorne, J. R.
Object Type:
Report
System:
The UNT Digital Library
Accelerator physics analysis with an integrated toolkit
Work is in progress on an integrated software toolkit for linear and nonlinear accelerator design, analysis, and simulation. As a first application, beamline'' and MXYZPTLK'' (differential algebra) class libraries, were used with an X Windows graphics library to build an user-friendly, interactive phase space tracker which, additionally, finds periodic orbits. This program was used to analyse a theoretical lattice which contains octupoles and decapoles to find the 20th order, stable and unstable periodic orbits and to explore the local phase space structure.
Date:
August 1, 1992
Creator:
Holt, J.A.; Michelotti, L. & Satogata, T.
Object Type:
Article
System:
The UNT Digital Library
Accelerator physics analysis with an integrated toolkit
Work is in progress on an integrated software toolkit for linear and nonlinear accelerator design, analysis, and simulation. As a first application, ``beamline`` and ``MXYZPTLK`` (differential algebra) class libraries, were used with an X Windows graphics library to build an user-friendly, interactive phase space tracker which, additionally, finds periodic orbits. This program was used to analyse a theoretical lattice which contains octupoles and decapoles to find the 20th order, stable and unstable periodic orbits and to explore the local phase space structure.
Date:
August 1, 1992
Creator:
Holt, J. A.; Michelotti, L. & Satogata, T.
Object Type:
Article
System:
The UNT Digital Library
The accuracy of beam-beam diagnostics for circular colliders
We investigate the potential of beam-beam deflection techniques for the determination of spot sizes, tilt angle, centering, and angular divergence for circular colliders. Achievable accuracies for all measured quantities are estimated.
Date:
August 1, 1992
Creator:
Ziemann, V.
Object Type:
Article
System:
The UNT Digital Library
The accuracy of beam-beam diagnostics for circular colliders
We investigate the potential of beam-beam deflection techniques for the determination of spot sizes, tilt angle, centering, and angular divergence for circular colliders. Achievable accuracies for all measured quantities are estimated.
Date:
August 1, 1992
Creator:
Ziemann, V.
Object Type:
Article
System:
The UNT Digital Library
Acoustic emission monitoring of HFIR vessel during hydrostatic testing
This report discusses the results and conclusions reached from applying acoustic emission monitoring to surveillance of the High Flux Isotope Reactor vessel during pressure testing. The objective of the monitoring was to detect crack growth and/or fluid leakage should it occur during the pressure test. The report addresses the approach, acoustic emission instrumentation, installation, calibration, and test results.
Date:
August 1, 1992
Creator:
Friesel, M. A. & Dawson, J. F.
Object Type:
Report
System:
The UNT Digital Library
Acoustic emission monitoring of HFIR vessel during hydrostatic testing. Final report
This report discusses the results and conclusions reached from applying acoustic emission monitoring to surveillance of the High Flux Isotope Reactor vessel during pressure testing. The objective of the monitoring was to detect crack growth and/or fluid leakage should it occur during the pressure test. The report addresses the approach, acoustic emission instrumentation, installation, calibration, and test results.
Date:
August 1, 1992
Creator:
Friesel, M. A. & Dawson, J. F.
Object Type:
Report
System:
The UNT Digital Library
An acousto-ultrasonic NDE technique for monitoring material anisotropy
A simpler and better way of monitoring the anisotropy of fiber-reinforced composite materials, based on the acousto-ultrasonic approach, is presented. In this approach, time of flight of the acousto-ultrasonic waves AU, rather than the stress wave factor, is measured. Two fundamental Lamb modes are generated under the first critical frequency: one is the first antisymmetric mode traveling with a slower velocity while the another is the first symmetric mode traveling with a faster speed. The later one is sensitive to the azimuthal angle and nearly nondispersive, and has a phase velocity very close to that of the bulk longitudinal wave of the material. Experimental data measured from two methods, TOF measurement and slope method, are compared with theoretical results; a good agreement is obtained for monitoring the material anisotropy. There is a great potential for this AU approach in material-property evaluation and in quantitative measurements of defects and debonding of fiber-reinforced composites. However, more studies are needed to better understand the effect of the fiber/matrix bonding on the measurements and to extract more information from the AU signals.
Date:
August 1, 1992
Creator:
Chien, Hual Te; Sheen, Shuh Haw & Raptis, A. C.
Object Type:
Article
System:
The UNT Digital Library
An acousto-ultrasonic NDE technique for monitoring material anisotropy
A simpler and better way of monitoring the anisotropy of fiber-reinforced composite materials, based on the acousto-ultrasonic approach, is presented. In this approach, time of flight of the acousto-ultrasonic waves AU, rather than the stress wave factor, is measured. Two fundamental Lamb modes are generated under the first critical frequency: one is the first antisymmetric mode traveling with a slower velocity while the another is the first symmetric mode traveling with a faster speed. The later one is sensitive to the azimuthal angle and nearly nondispersive, and has a phase velocity very close to that of the bulk longitudinal wave of the material. Experimental data measured from two methods, TOF measurement and slope method, are compared with theoretical results; a good agreement is obtained for monitoring the material anisotropy. There is a great potential for this AU approach in material-property evaluation and in quantitative measurements of defects and debonding of fiber-reinforced composites. However, more studies are needed to better understand the effect of the fiber/matrix bonding on the measurements and to extract more information from the AU signals.
Date:
August 1, 1992
Creator:
Chien, Hual Te; Sheen, Shuh Haw & Raptis, A. C.
Object Type:
Article
System:
The UNT Digital Library
Actinide Recovery Using Aqueous Biphasic Extraction: Initial Developmental Studies
Aqueous biphasic extraction systems are being developed to treat radioactive wastes. The separation technique involves the selective partitioning of either solutes or colloid-size particles between two scible aqueous phases. Wet grinding of plutonium residues to an average particle size of one micron will be used to liberate the plutonium from the bulk of the particle matrix. The goal is to produce a plutonium concentrate that will integrate with existing and developing chemical recovery processes. Ideally, the process would produce a nonTRU waste stream. Coupling physical beneficiation with chemical processing will result in a substantial reduction in the volume of mixed wastes generated from dissolution recovery processes. As part of this program, we will also explore applications of aqueous biphasic extraction that include the separation and recovery of dissolved species such as metal ions and water-soluble organics. The expertise and data generated in this work will form the basis for developing more cost-effective processes for handling waste streams from environmental restoration and waste management activities within the DOE community. This report summarizes the experimental results obtained during the first year of this effort. Experimental efforts were focused on elucidating the surface and solution chemistry variables which govern partitioning behavior of plutonium …
Date:
August 1992
Creator:
Chaiko, David J.; Mensah-Biney, R.; Mertz, C. J. & Rollins, A. N.
Object Type:
Report
System:
The UNT Digital Library
Actinide recovery using aqueous biphasic extraction: Initial developmental studies
Aqueous biphasic extraction systems are being developed to treat radioactive wastes. The separation technique involves the selective partitioning of either solutes or colloid-size particles between two scible aqueous phases. Wet grinding of plutonium residues to an average particle size of one micron will be used to liberate the plutonium from the bulk of the particle matrix. The goal is to produce a plutonium concentrate that will integrate with existing and developing chemical recovery processes. Ideally, the process would produce a nonTRU waste stream. Coupling physical beneficiation with chemical processing will result in a substantial reduction in the volume of mixed wastes generated from dissolution recovery processes. As part of this program, we will also explore applications of aqueous biphasic extraction that include the separation and recovery of dissolved species such as metal ions and water-soluble organics. The expertise and data generated in this work will form the basis for developing more cost-effective processes for handling waste streams from environmental restoration and waste management activities within the DOE community. This report summarizes the experimental results obtained during the first year of this effort. Experimental efforts were focused on elucidating the surface and solution chemistry variables which govern partitioning behavior of plutonium …
Date:
August 1, 1992
Creator:
Chaiko, D.J.; Mensah-Biney, R.; Mertz, C.J. & Rollins, A.N.
Object Type:
Report
System:
The UNT Digital Library
Actinide Recovery Using Aqueous Biphasic Extraction: Initial Developmental Studies
Aqueous biphasic extraction systems are being developed to treat radioactive wastes. The separation technique involves the selective partitioning of either solutes or colloid-size particles between two scible aqueous phases. Wet grinding of plutonium residues to an average particle size of one micron will be used to liberate the plutonium from the bulk of the particle matrix. The goal is to produce a plutonium concentrate that will integrate with existing and developing chemical recovery processes. Ideally, the process would produce a nonTRU waste stream. Coupling physical beneficiation with chemical processing will result in a substantial reduction in the volume of mixed wastes generated from dissolution recovery processes. As part of this program, we will also explore applications of aqueous biphasic extraction that include the separation and recovery of dissolved species such as metal ions and water-soluble organics. The expertise and data generated in this work will form the basis for developing more cost-effective processes for handling waste streams from environmental restoration and waste management activities within the DOE community. This report summarizes the experimental results obtained during the first year of this effort. Experimental efforts were focused on elucidating the surface and solution chemistry variables which govern partitioning behavior of plutonium …
Date:
August 1, 1992
Creator:
Chaiko, D. J.; Mensah-Biney, R.; Mertz, C. J. & Rollins, A. N.
Object Type:
Report
System:
The UNT Digital Library
Activist Alert: August 1992
August 1992 issue of Activist Alert, which contains specific articles relating to the gay and lesbian interests in the presidential election.
Date:
August 1992
Creator:
National Gay and Lesbian Task Force (U.S.)
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
The Activities of Disaster Relief Organizations During the Permanent Housing Phase of Recovery: a Case Study Analysis
This study investigates the recovery efforts provided for low income and ethnic minority populations by organizations during the permanent housing phase of recovery in Watsonville, California, following the Loma Prieta earthquake of October 17, 1989. The case study format is used to discover what activities were performed and why each organization chose to perform them. Dynes and Quarantelli's (1968) typology of organization is used to explain how and why established, expanding, extending and emergent organizations participated in the recovery efforts. The findings indicate that the type of organization dictated the kind of tasks each organization performed. Organizations maintained activities during recovery for which they had experience, expertise and proficiency.
Date:
August 1992
Creator:
Ephraim, Melinda M. H.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
ADIFOR case study: VODE + ADIFOR
ADIFOR can be used to generate the Jacobians required by VODE in a manner that is easy to use. We provide a template to interface the ADIFOR-generated code with VODE and show how the template is used in a sample system of stiff ordinary differential equation. The ADIFOR-generated code is about 10% faster than the hand-coded Jacobian for this example.
Date:
August 1, 1992
Creator:
Corliss, G.
Object Type:
Report
System:
The UNT Digital Library
ADIFOR case study: VODE + ADIFOR. ADIFOR working note No. 10
ADIFOR can be used to generate the Jacobians required by VODE in a manner that is easy to use. We provide a template to interface the ADIFOR-generated code with VODE and show how the template is used in a sample system of stiff ordinary differential equation. The ADIFOR-generated code is about 10% faster than the hand-coded Jacobian for this example.
Date:
August 1, 1992
Creator:
Corliss, G.
Object Type:
Report
System:
The UNT Digital Library
Advanced direct liquefaction concepts for PETC generic units. [Mainly, the effect of preteatment of coal with carbon monoxide and steam]
CAER/UK: Detail coal and starting solvents from Wilsonville were analyzed to develop the data necessary to conduct process studies in the CO Pretreatment and Catalyst Evaluation segment of this program. A comparison of the solvent separation analysis with the distillation/separation used at Wilsonville showed that the residual solvent components contained a large amount of residual pentane soluble products. The ashy resid contained 3% iron and 400 ppM molybdenum. Although the iron content in the distillate and deashed resid was much less, namely about 200 ppM., the molybdenum concentrations in these fractions were not significantly reduced over the concentration in the ashy resid, i.e., 200 ppM in each. The pretreatment of coal with CO/H{sub 2}O in the presence of NaOH and Na{sub 2}CO{sub 3} has been shown to give a product which is lower in oxygen content and higher in hydrogen content compared to the raw coal. The atomic H/C ratios of the H{sub 2}O-insolubles, THF insolubles and the PA+A fractions of the products-together with the hydrogen consumption data suggested that the raw coal has been substantially depolymerized and hydrogenated via the WGS reaction during the pretreatment process. The extensive amount of molecular reconstruction that has occurred in the solid product …
Date:
August 1, 1992
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Advanced direct liquefaction concepts for PETC generic units. Quarterly technical progress report, April 1992--June 1992
CAER/UK: Detail coal and starting solvents from Wilsonville were analyzed to develop the data necessary to conduct process studies in the CO Pretreatment and Catalyst Evaluation segment of this program. A comparison of the solvent separation analysis with the distillation/separation used at Wilsonville showed that the residual solvent components contained a large amount of residual pentane soluble products. The ashy resid contained 3% iron and 400 ppM molybdenum. Although the iron content in the distillate and deashed resid was much less, namely about 200 ppM., the molybdenum concentrations in these fractions were not significantly reduced over the concentration in the ashy resid, i.e., 200 ppM in each. The pretreatment of coal with CO/H{sub 2}O in the presence of NaOH and Na{sub 2}CO{sub 3} has been shown to give a product which is lower in oxygen content and higher in hydrogen content compared to the raw coal. The atomic H/C ratios of the H{sub 2}O-insolubles, THF insolubles and the PA+A fractions of the products-together with the hydrogen consumption data suggested that the raw coal has been substantially depolymerized and hydrogenated via the WGS reaction during the pretreatment process. The extensive amount of molecular reconstruction that has occurred in the solid product …
Date:
August 1, 1992
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Advanced Light Source First-Phase Scientific Program, 1993/1994
This composite document outlines ten different experiments planned for the beamline at the Advanced Light Source. Researchers from various parts of the country have detailed their methods and equipment to be used in experiments in biology and physics. X-ray spectroscopy and microscopy are the common topics to these experiments. (GHH)
Date:
August 1, 1992
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Advanced Light Source First-Phase Scientific Program, 1993/1994
This composite document outlines ten different experiments planned for the beamline at the Advanced Light Source. Researchers from various parts of the country have detailed their methods and equipment to be used in experiments in biology and physics. X-ray spectroscopy and microscopy are the common topics to these experiments. (GHH)
Date:
August 1, 1992
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Advanced NMR-based techniques for pore structure analysis of coal. Quarterly report No. 3, March 1, 1992--June 30, 1992
One of the main problems in coal utilization is the inability to properly characterize its complex pore structure. Coals typically have micro/ultra-micro pores but they also exhibit meso and macroporosity. We believe that measurement of the NMR parameters of various gas phase and adsorbed phase NMR active probes can provide the resolution to this problem. We will investigate the dependence of the common NMR parameters such as chemical shifts and relaxation times of several different nuclei and compounds on the pore structure of model microporous solids, carbons, and coals. In particular, we will study the interaction between several small molecules ({sup 129}Xe, {sup 3}He, {sup 2}H{sub 2}, {sup 14}N{sub 2}, {sup 14}NH{sub 3}, {sup 15}N{sub 2}, {sup 13}CH{sub 4}, {sup 13}CO{sub 2}) and the pore surfaces in coals. These molecules have been selected for their chemical and physical properties. A special NMR probe will be constructed which will allow the concurrent measurement of NMR properties and adsorption uptake at a variety of temperatures. All samples will be subjected to a suite of ``conventional`` pore structure analyses. These include nitrogen adsorption at 77 K with BET analysis, C0{sub 2} and CH{sub 4} adsorption at 273 K with D-R (Dubinin-Radushkevich) analysis, helium …
Date:
August 1, 1992
Creator:
Smith, D. M.
Object Type:
Report
System:
The UNT Digital Library