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Current to Pressure Transducers for the Argon & Nitrogen Dewars

Description: A current to pressure (I/P) transducer will be used in the D-Zero piping system. The transducer is necessary to precisely control the control valve positioners located at the argon and nitrogen dewars. A 4-20 rnA signal will come from the PLC function of the TI565. This electric signal must be converted by the transducer to a pneumatic signal of 3-15 psi which will position the actuator. By doing this, the valve can be opened or closed to any adjusted amount from the control room or a remote I/… more
Date: August 25, 1988
Creator: Serges, T. J.
Partner: UNT Libraries Government Documents Department
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Effects of an Acute Dose of Gamma Radiation Exposure on Stem Diameter Growth, Carbon Gain, and Biomass Partitioning in Helianthus annuus

Description: Nineteen-day-old dwarf sunflower plants (Helianthus annuus, variety NK894) received a variable dose (0-40 Gy) from a cobalt-60 gamma source. A very sensitive stem monitoring device, developed at Battelle's Pacific Northwest Laboratories, Richland, Washington was used to measure real-time changes in stem diameter. Exposure of plants caused a significant reduction in stem growth and root biomass. Doses as low as 5 Gy resulted in a significant increase in leaf density, suggesting that nonreversibl… more
Date: May 25, 1988
Creator: Thiede, M. E.
Partner: UNT Libraries Government Documents Department
open access

Free-flow variability on the Jess and Souza Ranches, Altamont Pass

Description: A central monitoring computer was installed on each ranch. The computers were connected by communication cables to 50 turbines on the Souza Ranch and 150 turbines on the Jess Ranch. Anemometers were installed on every other turbine on 12-foot booms at 35 feet above ground level (AGL). Spacing between anemometers was approximately 200 feet in the crosswind direction by 500 feet in the parallel direction. A total of 23 turbines on the Souza Ranch was instrumented in this fashion, as well as two m… more
Date: April 25, 1988
Creator: Nierenberg, R.
Partner: UNT Libraries Government Documents Department
open access

Free-flow variability on the Jess and Souza Ranches, Altamont Pass. [Final report]

Description: A central monitoring computer was installed on each ranch. The computers were connected by communication cables to 50 turbines on the Souza Ranch and 150 turbines on the Jess Ranch. Anemometers were installed on every other turbine on 12-foot booms at 35 feet above ground level (AGL). Spacing between anemometers was approximately 200 feet in the crosswind direction by 500 feet in the parallel direction. A total of 23 turbines on the Souza Ranch was instrumented in this fashion, as well as two m… more
Date: April 25, 1988
Creator: Nierenberg, R.
Partner: UNT Libraries Government Documents Department
open access

Shallow-crustal magma zones in and south of Long Valley, California: Final report for the period 1 Sept 1986 to 30 April 1988

Description: This report summarizes our investigations of seismic data from the Long Valley caldera region based mainly on data obtained from the USGS-Doe seismic network. During the period several thousands of earthquakes were recorded and located, including the extensive aftershock sequence of the July 1986 Chalfant Valley. This contract has provided partial operating support for this network, including the establishment of the first permanently-recording wideband digital station in the Mammoth Lakes regi… more
Date: April 25, 1988
Creator: Peppin, W. A.
Partner: UNT Libraries Government Documents Department
open access

Nitrogen oxide abatement by distributed fuel addition

Description: The purpose of this project is to develop techniques for nitrogen oxides abatement by distributed fuel addition. The major nitrogen oxide of interest is Nitric Oxide (NO), a precursor to premature forest damage and to acid rain. Recently interest has also been evoked with respect to an additional oxide of nitrogen, namely Nitrous Oxide (N{sub 2}O). Therefore, abatement measures for NO{sub x} are being investigated to determine their influence on N{sub 2}O as well. This report briefly describes … more
Date: March 25, 1988
Creator: Wendt, J.O.L. & Meraab, J.
Partner: UNT Libraries Government Documents Department
open access

Nitrogen oxide abatement by distributed fuel addition. Quarterly report No. 2, November 1, 1987--January 31, 1988

Description: The purpose of this project is to develop techniques for nitrogen oxides abatement by distributed fuel addition. The major nitrogen oxide of interest is Nitric Oxide (NO), a precursor to premature forest damage and to acid rain. Recently interest has also been evoked with respect to an additional oxide of nitrogen, namely Nitrous Oxide (N{sub 2}O). Therefore, abatement measures for NO{sub x} are being investigated to determine their influence on N{sub 2}O as well. This report briefly describes … more
Date: March 25, 1988
Creator: Wendt, J. O. L. & Meraab, J.
Partner: UNT Libraries Government Documents Department
open access

Porosity in as-cast U-Al alloy

Description: This memorandum documents a study that showed a cyclic occurrence of porosity in U-Al alloys produced in Building 321-M. Review of process data shows that the extent of porosity is more pronounced in months of warm, humid weather and less pronounced in cooler, drier months. This porosity is most likely caused by hydrogen, which becomes dissolved in the molten U-Al alloy during casting. Although excessive porosity was the cause of some observed process anomalies, this type of porosity has no sig… more
Date: February 25, 1988
Creator: Rhode, F. C.
Partner: UNT Libraries Government Documents Department
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