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Activation of methane by transition metal-substituted aluminophosphate molecular sieves

Description: Recent experiments in our laboratory have demonstrated that aluminophosphate molecular sieves substituted with cobalt and cobalt/silicon combinations and having the AlPO{sub 4}-34 or AlPO{sub 4}-5 structure activate methane starting at {approximately}350{degree}C. Between 400 and 500{degree}C the rate of methane conversion increases steadily with typical conversion efficiencies at 500{degree}C ranging from 15 to 60%. The cobalt and silicon substituted AlPO{sub 4}-34 structure (CoAPSO-34) produc… more
Date: December 1, 1989
Creator: Maroni, V A; Willms, K A; Nguyen, Hiephoa & Iton, L E
Item Type: Refine your search to only Article
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An active feedback system to control synchrotron oscillations in the SLC Damping Rings

Description: Initially the SLC Damping Rings accomplished Robinson instability damping by operating the RF accelerating cavities slightly detuned. In order to be able to run the cavities tuned and achieve damping for Robinson instability and synchrotron oscillations at injection an active feedback system has been developed. This paper describes the theoretical basis for the feedback system and the development of the hardware. Extensive measurements of the loop response including stored beam were performed. … more
Date: March 1, 1989
Creator: Corredoura, P.L.; Pellegrin, J.L.; Schwarz, H.D. & Sheppard, J.C.
Item Type: Refine your search to only Article
open access

Active interlock for storage ring insertion devices

Description: The insertion devices in the NSLS x-ray ring produce such intense photon beams that passive measures alone are not adequate to protect the vacuum chamber. An active interlock is used to prevent thermal damage from improperly steered electron beams. The interlock system measures the position of the electron beam on both sides of the insertion devices using pick-up electrodes and interrupts the rf if the beam moves outside a safe window. The interlock features redundant circuitry as well as an au… more
Date: January 1, 1989
Creator: Rochman, J. L. & Nawrocky, R. J.
Item Type: Refine your search to only Article
open access

The Active Personnel Dosimeter: Apfel Enterprises superheated drop detector

Description: The Active Personnel Dosimeter (APD) provides a digital readout of events caused by neutrons interacting with superheated liquid droplets. The droplets are suspended in a gel held in a replaceable cartridge. Upon neutron interaction, the superheated droplet vaporizes, forming a bubble. The sound produced in this process is recorded by transducers that sense the accompanying pressure pulse. The APD electronically discriminates against spurious noise and vibration. Studies with the production pro… more
Date: October 1, 1989
Creator: Ipe, N. E.; Donahue, R. J. & Busick, D. D.
Item Type: Refine your search to only Article
open access

Adaptive contact elements for three-dimensional explicit transient analysis

Description: A finite element method was developed for treating the mechanics of contact between deformable bodies. The method uses a family of adaptive interface elements, which were based on the penalty method, to handle the changing contact configurations that can occur between discretized contacting bodies. The nodal connectivity of these interface elements was allowed to change during the computations in order to accommodate finite sliding. The infusion of these elements in the interface satisfies the … more
Date: January 1, 1989
Creator: Kulak, R.F.
Item Type: Refine your search to only Report
open access

Adaptive enhancement of magnetoencephalographic signals via multichannel filtering

Description: A time-varying spatial/temporal filter for enhancing multichannel magnetoencephalographic (MEG) recordings of evoked responses is described. This filter is based in projections derived from a combination of measured data and a priori models of the expected response. It produces estimates of the evoked fields in single trial measurements. These estimates can reduce the need for signal averaging in some situations. The filter uses the a priori model information to enhance responses where they exi… more
Date: January 1, 1989
Creator: Lewis, P.S.
Item Type: Refine your search to only Article
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Addendum, automatic data processing (ADP) security plan, Revision 1. ADP facility number: PNL-63

Description: This document is an addendum to the ADP security plan for the 3760 Building, Revision 01, and provides specific information regarding location, equipment, use, and responsible individuals. Procedures for protecting the classified ADP facility, equipment, software, and data will be consistent with the Generic ADP Security Plan for the 3760 Building, Rev. 1, unless otherwise noted in this document.
Date: June 30, 1989
Creator: Johnston, B. L.
Item Type: Refine your search to only Report
open access

Additional capabilities and benchmarking with the SPERT transients for heavy water application of the PARET code

Description: The capabilities of the PARET code have been expanded to include the ability to compute steady-state and transient results for heavy water reactors. A comparison is provided between PARET and the SPERT II series of transients. Another significant improvement in the code is the addition of a restart capability. The current capabilities of the code are summarized. 7 refs., 12 figs., 3 tabs.
Date: January 1, 1989
Creator: Woodruff, W.L.
Item Type: Refine your search to only Article
open access

Adiabatic Focuser

Description: Theoretical analysis is made of an intense relativistic electron beam. such as would be available from a linear collider, moving through a plasma of increasing density, but density always less than that of the beam (underdense). In this situation. the plasma electrons are expelled from the beam channel and the electrons are subject to an ever-increasing focusing force provided by the channel ions. Analysis is made on the beam radiation energy loss in the classical, the transition, and the quant… more
Date: August 1, 1989
Creator: Chen, P.; Oide, K.; Sessler, Andrew M. & Yu, S. S.
Item Type: Refine your search to only Article
open access

An adiabatic focuser

Description: Theoretical analysis is made of an intense relativistic electron beam, such as would be available from a linear collider, moving through a plasma of increasing density, but density always less than that of the beam (underdense). In this situation, the plasma electrons are expelled from the beam channel and the electrons are subject to an ever-increasing focusing force provided by the channel ions. Analysis is made on the beam radiation energy loss in the classical, the transition, and the quant… more
Date: August 1, 1989
Creator: Chen, P.; Oide, K.; Sessler, A. M.; Yu, S. S. (Stanford Linear Accelerator Center, Menlo Park, CA (USA); Lawrence Berkeley Lab., CA (USA) & Lawrence Livermore National Lab., CA (USA))
Item Type: Refine your search to only Article
open access

Adolescent Health Insurance Status: Analyses of Trends in Coverage and Preliminary Estimates of the Effects of an Employer Mandate and Medicaid Expansion on the Uninsured

Description: This report examines the health insurance status of adolescents (10 to 18 years of age) based on census data. It considers the reasons that some adolescents are insured and others are not, changes in the number of uninsured adolescents over time, and the effects of various approaches to ensure that more adolescents have insurance.
Date: June 1989
Creator: United States. Congress. Office of Technology Assessment.
Item Type: Refine your search to only Report
open access

Advanced Accelerator Test Facility (AATF) Upgrade Plan

Description: We have successfully demonstrated the principles of wake-field acceleration using structures (cavity, dielectric) and plasmas as wake-field devices using the AATF at Argonne National Laboratory. Due to the limited driver electron pulse intensity and relative long pulse length, only modest accelerating gradients were observed. In order to study the wake field effects in much greater detail and demonstrate the feasibility of wake-field accelerator for high energy physics, we are considering const… more
Date: January 1, 1989
Creator: Gai, W.; Ho, C.; Konecny, R.; Mtingwa, S.; Norem, J.; Rosenzweig, J. et al.
Item Type: Refine your search to only Article
open access

Advanced alternate planar geometry solid oxide fuel cells

Description: During this quarter, progress was made at Ceramatec in seal development and conductivity measurements of YIG compositions. A creep test was completed on the porous/dense/porous triilayer. IGT provided a discussion on possible interconnect materials. The following tasks are reported on: cell design analysis, program liaison and test facility preparation, cell component fabrication/development, out-of-cell tests. 9 figs, 2 tabs.
Date: January 1, 1989
Creator: Prouse, D.; Elangovan, S.; Khandkar, A. (Ceramatec, Inc., Salt Lake City, UT (United States)); Donelson, R. & Marianowski, L. (Institute of Gas Technology, Chicago, IL (United States))
Item Type: Refine your search to only Report
open access

Advanced alternate planar geometry solid oxide fuel cells. Interim quarterly technical progress report, November 1, 1988--January 31, 1989

Description: During this quarter, progress was made at Ceramatec in seal development and conductivity measurements of YIG compositions. A creep test was completed on the porous/dense/porous triilayer. IGT provided a discussion on possible interconnect materials. The following tasks are reported on: cell design analysis, program liaison and test facility preparation, cell component fabrication/development, out-of-cell tests. 9 figs, 2 tabs.
Date: December 31, 1989
Creator: Prouse, D.; Elangovan, S.; Khandkar, A.; Donelson, R. & Marianowski, L.
Item Type: Refine your search to only Report
open access

Advanced Binary Geothermal Power Plancts Working Fluid Property Determination and Heat Exchanger Design

Description: The performance of binary geothermal power plants can be improved through the proper choice of a working fluid, and optimization of component designs and operating conditions. This paper reviews the investigations at the Idaho National Engineering Laboratory (INEL) which are examining binary cycle performance improvements: for moderate temperature (350 to 400 F) resources with emphasis on how the improvements may be integrated into design of binary cycles. These investigations are examining per… more
Date: March 21, 1989
Creator: Bliem, C.J. & Mines, G.L.
Item Type: Refine your search to only Article
open access

Advanced binary geothermal power plants working fluid property determination and heat exchanger design

Description: The performance of binary geothermal power plants can be improved through the proper choice of a working fluid, and optimization of component designs and operating conditions. This paper reviews the investigations at the Idaho National Engineering Laboratory (INEL) which are examining binary cycle performance improvements for moderate temperature (350 to 400 F) resources with emphasis on how the improvements may be integrated into design of binary cycles. These investigations are examining perf… more
Date: January 1, 1989
Creator: Bliem, C.J. & Mines, G.L.
Item Type: Refine your search to only Article
open access

Advanced Coal-Fueled Gas Turbine Program

Description: The objective of the original Request for Proposal was to establish the technological bases necessary for the subsequent commercial development and deployment of advanced coal-fueled gas turbine power systems by the private sector. The offeror was to identify the specific application or applications, toward which his development efforts would be directed; define and substantiate the technical, economic, and environmental criteria for the selected application; and conduct such component design, … more
Date: February 1, 1989
Creator: Horner, M. W.; Ekstedt, E. E.; Gal, E.; Jackson, M. R.; Kimura, S. G.; Lavigne, R. G. et al.
Item Type: Refine your search to only Report
open access

Advanced Coal-Fueled Gas Turbine Program. Final report

Description: The objective of the original Request for Proposal was to establish the technological bases necessary for the subsequent commercial development and deployment of advanced coal-fueled gas turbine power systems by the private sector. The offeror was to identify the specific application or applications, toward which his development efforts would be directed; define and substantiate the technical, economic, and environmental criteria for the selected application; and conduct such component design, … more
Date: February 1, 1989
Creator: Horner, M. W.; Ekstedt, E. E.; Gal, E.; Jackson, M. R.; Kimura, S. G.; Lavigne, R. G. et al.
Item Type: Refine your search to only Report
open access

Advanced coal-fueled gas turbine systems; Technical progress report, July--September 1989

Description: During this quarter, the initial round of iron-oxide based sorbent tests were completed, with iron-oxide based sorbents showing a small advantage over the calcia-based sorbents that had been evaluated previously. Also, the evaluation of coal-water mixture (CWM), was initiated, and a bench-scale series of experiments conducted. These latter experiments concerned spent sorbent stability in molten slag.
Date: November 29, 1989
Item Type: Refine your search to only Report
open access

Advanced composite materials and processes for the manufacture of SSC (Superconducting Super Collider) and RHIC (Relativistic Heavy Ion Collider) superconducting magnets used at cryogenic temperatures in a high radiation environment

Description: Presently, BNL work on superconducting magnets centers mainly on the development of 17 meter length dipoles for the Superconducting Super Collider Project, approved for construction at Waxahatchie, Texas and 9.7 meter dipoles and quadrupoles for the Relativistic Heavy Ion Collider, a BNL project to start construction next year. This paper will discuss the role of composites in the manufacture of magnets, their operational requirements in cryogenic and radiation environments, and the benefits de… more
Date: January 1, 1989
Creator: Sondericker, J.H.
Item Type: Refine your search to only Article
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