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Fact sheet for the Hawaii Geothermal Project (HGP)

Description: This fact sheet for distribution at the flash and flow test of HGP-A, July 22, 1976 contains a temperature-depth plot, a brief chronology, and a budget summary. (MHR)
Date: July 22, 1976
Partner: UNT Libraries Government Documents Department
open access

Dissolution processes. [224 references]

Description: This review contains more than 100 observations and 224 references on the dissolution phenomenon. The dissolution processes are grouped into three categories: methods of aqueous attack, fusion methods, and miscellaneous observations on phenomena related to dissolution problems. (DLC)
Date: October 22, 1976
Creator: Silver, G. L.
Partner: UNT Libraries Government Documents Department
open access

Separation of B/sub 4/C powder by air classification

Description: Large quantities of bulk powder can be separated according to particle size and density by air classifiers. Classifiers disperse the powder and usually achieve size differentiation by drag and centrifugal forces acting on individual particles in the gas stream. A Donaldson ''acucut'' Classifier for the separation of B/sub 4/C powder is evaluated. Experimental tests were conducted to determine the particle cut sizes and powder yields obtained by variation of operating parameters. To assess the c… more
Date: December 22, 1976
Creator: Farrell, C. L. & Biermann, A. H.
Partner: UNT Libraries Government Documents Department
open access

Predicting subsidence over coal-gasification sites

Description: The extent to which earth subsidence may be caused by in situ coal gasification is studied using the method of finite elements. This study takes into account rock failure modes and nonlinearity of rock stiffness. Two models were studied for the site at Hoe Creek, where a coal seam is overlain and underlain by interbedded clays and sandstones. These two studies are expected to bracket any subsidence that may occur. Maximum subsidence was 0.06 in. using the stiff model and 3.5 in. using the soft … more
Date: November 22, 1976
Creator: Langland, R. & Fletcher, D.
Partner: UNT Libraries Government Documents Department
open access

Suitability of Tophet C-Alloy 52/Kovar components to hydrogen environments

Description: The suitability of Tophet C-Alloy 52/Kovar weldments to hydrogen embrittlement were investigated because of their potential as candidate materials in fabrication of minaturized initiators for pyrotechnics. Cathodic charged samples were statically loaded for extended periods of time resulting in no load failures and in ductile fracture surfaces indicating resistance to hydrogen embrittlement. 20 figures.
Date: June 22, 1976
Creator: Gebhart, J. M. & Kelly, M. D.
Partner: UNT Libraries Government Documents Department
open access

Soil structure interaction calculations: a comparison of methods

Description: Two approaches for calculating soil structure interaction (SSI) are compared: finite element and lumped mass. Results indicate that the calculations with the lumped mass method are generally conservative compared to those obtained by the finite element method. They also suggest that a closer agreement between the two sets of calculations is possible, depending on the use of frequency-dependent soil springs and dashpots in the lumped mass calculations. There is a total lack of suitable guideline… more
Date: July 22, 1976
Creator: Wight, L. & Zaslawsky, M.
Partner: UNT Libraries Government Documents Department
open access

Examination of temperature-induced shape memory of uranium--5. 3-to 6. 9 weight percent niobium alloys

Description: The uranium-niobium alloy system was examined in the range of 5.3-to-6.9 weight percent niobium with respect to shape memory, mechanical properties, metallography, Coefficients of linear thermal expansion, and differential thermal analysis. Shape memory increased with increasing niobium levels in the study range. There were no useful correlations found between shape memory and the other tests. Coefficients of linear thermal expansion tests of as-quenched 5.8 and 6.2 weight percent niobium speci… more
Date: September 22, 1976
Creator: Hemperly, V. C.
Partner: UNT Libraries Government Documents Department
open access

LMFBR safety. 2. Review of current issues and bibliography of literature, 1970--1972

Description: This report discusses the current status of liquid-metal fast breeder reactor (LMFBR) development and one of the principal safety issues, a hypothetical core-disruptive accident (HCDA). Bibliographic information on worldwide LMFBRs relative to the development of the breeder reactor as a safe source of nuclear power is presented for the period 1970 through 1972. The bibliography consists of approximately 1620 abstracts covering early research and development and operating experiences leading up … more
Date: November 22, 1976
Creator: Buchanan, J. R. & Keilholtz, G. W.
Partner: UNT Libraries Government Documents Department
open access

Formation and evaluation of convex-curved crystals of lithium fluoride for use in analyzing x-ray spectra

Description: Lithium fluoride as received from the vendor in boule form is 38 x 38 x 13 mm thick. This block is cleaved to wafers of the desired thickness, x-ray-evaluated for ''d'' spacing and greatest intensity, bent to the required radius, and then acid-etched to remove foreign material. The diffraction and dispersion characteristics of a wafer are analyzed using well-collimated tungsten x rays that strike the crystal and are diffracted onto no-screen x-ray film. If the crystal is satisfactory, it is mou… more
Date: July 22, 1976
Creator: Sellick, Barton O.
Partner: UNT Libraries Government Documents Department
open access

Web-dendritic ribbon growth. USC solar report No. Q-3

Description: The web growth investigation portion of this program was spent in growing a backlog of primitive dendrites and developing a number of dendritic seed crystals having a variety of twin plane spacings. These seeds are to be used in the determination of the optimum twin spacing for dendritic-web growth. Having determined the optimum twin spacing for the seed dendrites, the optimized seeds will be used in the experimental part of the investigation to determine the limitation on the growth width and … more
Date: June 22, 1976
Creator: Hilborn, R. B. Jr. & Faust, J. W. Jr.
Partner: UNT Libraries Government Documents Department
open access

Channeling and coherent bremsstrahlung effects for relativistic positrons and electrons. [16 to 28 MeV, orientation]

Description: Channeling of positrons in single crystals of silicon was observed in transmission and scattering measurements for incident energies from 16 to 28 MeV. In addition, the spectral dependence upon crystal orientation of the forward coherent bremsstrahlung produced by beams of 28-MeV positrons and electrons incident upon a 5 ..mu..m thick single crystal of silicon was measured with a NaI photon spectrometer. Effects of channeling and perhaps of the nonvalidity of the first Born approximation were o… more
Date: March 22, 1976
Creator: Walker, R. L.
Partner: UNT Libraries Government Documents Department
open access

Report on process design studies of a tritium recovery process using dual temperature exchange with metal hydrides

Description: Studies were made of the process characteristics of a plant to decontaminate tritiated water using dual temperature exchange with VH/sub 2/. Feed to the plant consists of 300 kg/day on water containing 1 Ci/kg of tritium. A reference design was developed based on a decontamination factor of 10/sup 2/ and 10 kg/day of enriched product. This design requires a total of 48 ideal separation stages, 22 stages in the enriching section and 26 stages in the stripping section. Only low grade heat is requ… more
Date: January 22, 1976
Creator: Benenati, R. F.
Partner: UNT Libraries Government Documents Department
open access

Error field across the aperture of the ISABELLE dipole

Description: Error field multipoles due to systematic errors in the current distribution are computed and compared with the error field multipoles due to random errors in the current distribution. The systematic field error multipoles are found to vary rapidly across the aperture, and in some cases may be the dominant error multipoles.
Date: July 22, 1976
Creator: Parzen, G.
Partner: UNT Libraries Government Documents Department
open access

/sup 238/Pu surface contamination of MHW impact shell assembly

Description: /sup 238/PuO/sub 2/ contamination of the grit blasted surface of the primary impact shell assembly (PISA) of the multi-hundred watt isotopic heat source was measured. The study determined the amount and distribution of the /sup 238/PuO/sub 2/ and characterization of its behavior during aging at 1350/sup 0/C. The results concluded that normal decontamination effectively removes the superficial /sup 238/PuO/sub 2/ but does not extract the /sup 238/PuO/sub 2/ which is deep within the grit blasted … more
Date: November 22, 1976
Creator: Schaeffer, D. R.; Johnson, E. W.; Sheehan, W. E.; Fleming, D. L. & Egleston, E. E.
Partner: UNT Libraries Government Documents Department
open access

The Effect of the Brooke-Cranston Program: A Comparison of Assisted and Unassisted Home Mortgages in 1975

Description: This report concerns efficacy in stimulating home construction and the outcome of this, as well as if the Brooke-Cranston Program has mostly assisted wealthy households in purchasing new homes, as opposed to low and middle income families.
Date: September 22, 1976
Creator: Milgram, Grace; Miles, Barbara; Dovell, Susan & Bendt, Douglas
Partner: UNT Libraries Government Documents Department
open access

Summary of Federal Campaign Financing Laws

Description: This report on the Summary of Federal Campaign Financing Laws.
Date: July 22, 1976
Creator: Fiori, Patricia
Partner: UNT Libraries Government Documents Department
open access

Robustness to misspecifications of correlation models. Technical report No. 2

Description: Optimal linear interpolation between discrete observations in R/sup 2/ depends on the random function model assumed to generate the two-dimensional field. Sensitivity of the optimal solution to errors in specification of the model are studied. An illustration using second-order stationary models with a misspecified autocorrelation function is examined in detail. We also explore, by examples, the sensitivity procedure when more distant data points are omitted from the calculations. We have found… more
Date: July 22, 1976
Creator: Sheshinski, R.
Partner: UNT Libraries Government Documents Department
open access

Modification of the x-ray diffraction efficiency of lithium fluoride crystals by surface treatment

Description: Convex-curved crystals of lithium fluoride demonstrate good dispersion and efficiency when used in reflection for x-ray spectral analysis. The crystals are stable and reasonably unaffected by harsh environments. In addition, they are mechanically strong, easily cleavable or machinable, and plastically deformable with heat. In the present study, flat crystal wafers were left either clear as cleaved or were subjected to surface treatment by sandblasting or lapping. Some wafers were then bent in a… more
Date: July 22, 1976
Creator: Sellick, Barton O.
Partner: UNT Libraries Government Documents Department
open access

Termination of the Special Metallurgical (SM) Building at Mound Laboratory: a final report

Description: The report describes and highlights the more important factors associated with the termination of the Special Metallurgical (SM) Building at Mound Laboratory. As a result, a written record of the more important techniques and procedures is now available for reference by others involved in similar termination efforts. Included in this report is a description of the organizational units that were used in this effort along with a description of their responsibilities. A general description of the … more
Date: December 22, 1976
Creator: Harris, W. R.; Kokenge, B. R. & Marsh, G. C.
Partner: UNT Libraries Government Documents Department
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