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231 Matching Results
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Formation of H/sup -/ and D/sup -/ Ions by Particle Backscattering From Alkali/Transition Metal Complexes
The data for negative ion reflection yields is analyzed using a backscattering model for the secondary emission coefficient. The enhancement of the secondary emission coefficient is discussed in terms of reflection, formation, and survival probabilities. The yield of negative ions from alkali/transition metal surfaces by low energy atoms emitted from the ion-source discharge is calculated. Volume production of negative ions generated by plasma-surface interactions in a low-work-function-surface bucket-discharge is discussed.
Date:
October 1, 1980
Creator:
Hiskes, J. R. & Schneider, P. J.
Object Type:
Article
System:
The UNT Digital Library
The Perry Daily Journal (Perry, Okla.), Vol. 87, No. 224, Ed. 1 Wednesday, October 22, 1980
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 22, 1980
Creator:
Watson, Milo W.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Perry Daily Journal (Perry, Okla.), Vol. 87, No. 222, Ed. 1 Monday, October 20, 1980
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 20, 1980
Creator:
Watson, Milo W.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Perry Daily Journal (Perry, Okla.), Vol. 87, No. 211, Ed. 1 Tuesday, October 7, 1980
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 7, 1980
Creator:
Watson, Milo W.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Perry Daily Journal (Perry, Okla.), Vol. 87, No. 206, Ed. 1 Wednesday, October 1, 1980
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 1, 1980
Creator:
Watson, Milo W.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Texas Jewish Post (Fort Worth, Tex.), Vol. 34, No. 41, Ed. 1 Thursday, October 9, 1980
Weekly Jewish newspaper from Fort Worth, Texas that includes local, state, and national news along with extensive advertising.
Date:
October 9, 1980
Creator:
Wisch, J. A.
Object Type:
Newspaper
System:
The Portal to Texas History
Ultrasonic measurement of elastic moduli of 17-4 pH stainless steel and uranium -2 molybdenum from -40/sup 0/C to 800/sup 0/C
Young's Modulus, shear modulus, and Poisson's ratio for 17-4 pH stainless steel and uranium -2 molybdenum are calculated from ultrasonic longitudinal and shear velocities determined from -40/sup 0/C to 800/sup 0/C. The ultrasonic velocities were determined at elevated temperatures using a through-transmission buffer rod arrangement. An indium-gallium slurry bond was used as an ultrasonic couplant between Cupernickel 10 alloy buffer rods and the specimen. Microstructural changes and phase transitions in the specimens are evident from the temperature dependence of the ultrasonic data. 10 figures, 3 tables.
Date:
October 1, 1980
Creator:
Gieske, J. H.
Object Type:
Report
System:
The UNT Digital Library
Elastic moduli of boron carbide/copper composites from -40/sup 0/C to 800/sup 0/C by ultrasonic methods
An ultrasonic through-transmission technique for high attenuating materials was developed to determine the ultrasonic longitudinal and shear velocities in B/sub 4/C/Cu composites to 800/sup 0/C. Ultrasonic velocity data was used to calculate Young's modulus, shear modulus, and Poisson's ratio for the composites from -40/sup 0/C to 800/sup 0/C. 5 figures, 1 table.
Date:
October 1, 1980
Creator:
Gieske, J. H.
Object Type:
Report
System:
The UNT Digital Library
The Harper Herald (Harper, Tex.), Vol. 64, No. 44, Ed. 1 Friday, October 31, 1980
Weekly newspaper from Harper, Texas that includes local, state, and national news along with advertising.
Date:
October 31, 1980
Creator:
Dietel, Norman J.
Object Type:
Newspaper
System:
The Portal to Texas History
FSHAKER: a transient control program. [For HP 5451C]
A description is given of FSHAKER, a transient control program for the performance of transient tests, written to run on the HP 5451C (Fourier) system. The report also contains a listing of a demonstration run made with FSHAKER. The appendix contains a commented listing of FSHAKER and listings of three Fortran user programs called by FSHAKER. (RWR)
Date:
October 1, 1980
Creator:
Cawlfield, J L
Object Type:
Report
System:
The UNT Digital Library
Target reservoirs for CO/sub 2/ miscible flooding: Volume I. Discussion of CO/sub 2/ injection process. Volume II. Full scale and pilot field tests. Final report
Separate abstracts were prepared for Volumes I and II of this report.
Date:
October 1, 1980
Creator:
Goodrich, J. H.
Object Type:
Report
System:
The UNT Digital Library
Analysis of the impact of the regulation of toxic substances on Sandia
In recent years, Congress has passed two regulatory acts, namely the Occupational Safety and Health Act (OSHA) and the Toxic Substance Control Act (TSCA) which seek to control the manufacture, use, and disposal of hazardous chemical substances. These acts can have a significant impact on Sandia's missions and will particularly affect those organizations involved in materials development and selection. The primary purpose of this report is to describe in some detail the impact of these acts on Sandia's corporate goals and make recommendations on what our response should be. Also described in this report is the present position of Sandia with respect to these regulatory acts and the policies and actions that Sandia has taken to date in an effort to minimize their impact.
Date:
October 1980
Creator:
Arnold, C., Jr. & Pigg, J.
Object Type:
Report
System:
The UNT Digital Library
Jewish Herald-Voice (Houston, Tex.), Vol. 72, No. 30, Ed. 1 Thursday, October 16, 1980
Weekly Jewish newspaper from Houston, Texas that includes local, state, and national news along with advertising.
Date:
October 16, 1980
Creator:
Samuels, Joseph W. & Samuels, Jeanne F.
Object Type:
Newspaper
System:
The Portal to Texas History
H/sup -/ ion formation from a surface conversion type ion source
Volume-produced H/sup -/ ions have been extracted from a multi-cusp ion source by using a standard extraction system. In addition, a molybdenum converter is installed in the source to generate surface-produced H/sup -/ ions. The H/sup -/ ion yield is measured by a mass spectrometer. Without cesium, the production of H/sup -/ ions by the surface process is very small compared with those generated by volume production. However, the presence of cesium can greatly enhance the surface production yield. The energy spectrum shows that the surface-generated H/sup -/ ions contain two distinct groups when cesium is added to the discharge. The energy of one group is essentially that of the sheath potential and appears to be produced by a desorption process. The second group of H/sup -/ ions have slightly higher energies and appear to be formed by a reflection process. Different types of converter materials have also been tested.
Date:
October 1, 1980
Creator:
Leung, K. N. & Ehlers, K. W.
Object Type:
Article
System:
The UNT Digital Library
Jewish Herald-Voice (Houston, Tex.), Vol. 72, No. 32, Ed. 1 Thursday, October 30, 1980
Weekly Jewish newspaper from Houston, Texas that includes local, state, and national news along with advertising.
Date:
October 30, 1980
Creator:
Samuels, Joseph W. & Samuels, Jeanne F.
Object Type:
Newspaper
System:
The Portal to Texas History
European empirical methods applied to subsidence in U. S. coal fields
The empirical methods commonly used in Europe to describe the shape of subsidence troughs are tested against the field data of the York Canyon Mine in Northern New Mexico. This mine is in a flat lying seam under rugged terrain. The subsidence data consists of time-correlated measurements of surface displacements above two longwall panels. While the profile fits from the graphical methods (United Kingdom) do not agree with the measured profiles, the profile functions of the error integral type used in Continental Europe fit the data well. The profile function analysis of the development curves also suggests a time-dependent response of the overburden. These results, except for the specific profile function used, are similar to those found previously for longwall subsidence at the Old Ben No. 24 Mine. Parameter values of the fit, i.e., the effective half range of the function and inflection point offset, were determined for all profiles. These parameters for the development curves and traveling profiles, which fundamentally result from the same raw data, exhibit markedly different apparent ''scatter.'' The rather narrow range of values for the development curves suggest that individual points subside in a well-behaved manner; and hence, the large variation in parameter values for …
Date:
October 1, 1980
Creator:
Munson, D. E. & Eichfeld, W. F.
Object Type:
Report
System:
The UNT Digital Library
Thermal studies in a geothermal area: Report I. Thermal studies at Roosevelt Hot Springs, Utah; Report II. Heat flow above an arbitrarily dipping plane of heat sources; and Report III. A datum correction for heat flow measurements made on an arbitrary surface
Separate abstracts were prepared for the three reports included in this volume on the interpretation of heat flow data in a geothermal area. (MHR)
Date:
October 1, 1980
Creator:
Wilson, W.R. & Chapman, D.S.
Object Type:
Report
System:
The UNT Digital Library
Alternate protection concepts for second surface silver/glass solar mirrors
Investigations into three technologies having the potential of significantly enhancing the durability of solar mirrors are reported. The approaches are based on the assumption that sealing the silver layer on second surface mirrors from the external environment with protective overcoats will significantly extend their useful service life. Considered are: (1) edge sealing a second sheet of glass over the silver layer using solder glasses, (2) overcoating the silver layer with liquid applied SiO/sub 2/ or TiO/sub 2/ coatings, and (3) overcoating the silver layer with an electroless nickel film. Preliminary experiments were performed using Sb/sub 2/O/sub 5/-K/sub 2/O and PbO based solder glasses to edge seal a second sheet of glass over the silver mirror surface. Problems encountered in the formulation of the Sb/sub 2/O/sub 5/-K/sub 2/O glasses forced abandonment of these low melting point solder glass experiments. Materials compatibility problems were encountered when using several of the commercially available PbO based solder glasses alternatives. A cursory evaluation of liquid SiO/sub 2/ and TiO/sub 2/ coatings was also undertaken. The films were applied as direct overcoats on both silver only and silver/copper mirror substrates. Although the process appeared to yield visually acceptable coatings, under microscopic examination the films were found …
Date:
October 1, 1980
Creator:
Buckwalter, C. Q.; Dake, L. S.; Hartman, J. S. & Lind, M. A.
Object Type:
Report
System:
The UNT Digital Library
Volume and accessibility of entrained (solution) methane in deep geopressured reservoirs - tertiary formations of the Texas Gulf Coast. Final report
The objective of this project was to appraise the total volume of in-place methane dissolved in formation waters of deep sandstone reservoirs of the onshore Texas Gulf Coast within the stratigraphic section extending from the base of significant hydrocarbon production (8000 ft)* to the deepest significant sandstone occurrence. The area of investigation is about 50,000 mi/sup 2/. Factors that determine the total methane resource are reservoir bulk volume, porosity, and methane solubility; the latter is controlled by the temperature, pressure, and salinity of formation waters. Regional assessment of the volume and the distribution of potential sandstone reservoirs was made from a data base of 880 electrical well logs, from which a grid of 24 dip cross sections and 4 strike cross sections was constructed. Solution methane content in each of nine formations or divisions of formations was determined for each subdivision. The distribution of solution methane in the Gulf Coast was described on the basis of five reservoir models. Each model was characterized by depositional environment, reservoir continuity, porosity, permeability, and methane solubility.
Date:
October 1, 1980
Creator:
Gregory, A. R.; Dodge, M. M.; Posey, J. S. & Morton, R. A.
Object Type:
Report
System:
The UNT Digital Library
The Big Lake Wildcat (Big Lake, Tex.), Vol. 55, No. 41, Ed. 1 Thursday, October 9, 1980
Weekly newspaper from Big Lake, Texas that includes local, state and national news along with advertising.
Date:
October 9, 1980
Creator:
Werst, David
Object Type:
Newspaper
System:
The Portal to Texas History
The Big Lake Wildcat (Big Lake, Tex.), Vol. 55, No. 42, Ed. 1 Thursday, October 16, 1980
Weekly newspaper from Big Lake, Texas that includes local, state and national news along with advertising.
Date:
October 16, 1980
Creator:
Werst, David
Object Type:
Newspaper
System:
The Portal to Texas History
The Big Lake Wildcat (Big Lake, Tex.), Vol. 55, No. 44, Ed. 1 Thursday, October 30, 1980
Weekly newspaper from Big Lake, Texas that includes local, state and national news along with advertising.
Date:
October 30, 1980
Creator:
Werst, David
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 85, No. 42, Ed. 1 Thursday, October 16, 1980
Weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
October 16, 1980
Creator:
Lovell, Mike
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 85, No. 44, Ed. 1 Thursday, October 30, 1980
Weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
October 30, 1980
Creator:
Lovell, Mike
Object Type:
Newspaper
System:
The Portal to Texas History