Partner
Oklahoma Historical Society
692
UNT Libraries Government Documents Department
268
Texas Historical Commission
57
UNT Libraries Special Collections
57
The Grace Museum
50
Dublin Public Library
29
Sterling Municipal Library
26
Brownwood Public Library
25
UNT Libraries
23
Carl Albert Congressional Research and Studies Center
21
105 More
Collection
Oklahoma Publishing Company Photography Collection
475
Texas Digital Newspaper Program
472
Oklahoma Digital Newspaper Program
242
Tocker Foundation Grant
239
Office of Scientific & Technical Information Technical Reports
197
Abilene Library Consortium
79
Texas & Pacific Railway Collection
50
The Oklahoma City Times
40
THC National Register Collection
34
Altus Times-Democrat
29
155 More
States
Year
Month
Distribution and Movement of Zinc and Other Heavy Metals in South San Francisco Bay, California
From introduction: The primary objective of this study was to determine the net transport of zinc into the study area from urbanized perimeter, out of the study area across the northern boundary of the study area, and across the sediment-water interface within the study area, all within a limited time period. A secondary objective was to assemble as much data on other trace metals--their concentrations and chemical states in water, suspended solids, sediments and interstitial fluids--as possible within the time and funding constraints of the study in order to describe the existing trace metal conditions in the south bay. Thus the bulk of effort was directed toward evaluating the distribution and movements of zinc, but the data collected on the distribution and movements of zinc, but the data collected on the distribution of other metals is important and is reported here.
Date:
February 1976
Creator:
Bradford, Wesley L.
Object Type:
Report
System:
The UNT Digital Library
El Dorado micellar--polymer project technical letter for February, 1976
Preliminary results of a well stimulation program consisting of a solvent-acid treatment appear quite favorable. Considerable effort was made on site and in the laboratory to determine the major factors responsible for the less than desirable water quality being found in the field. (LK)
Date:
February 1, 1976
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Double-wall steam-generator tube and weld-development study. [LMFBR]
The objective of this effort was to evaluate and initiate development on double-wall tubing and tube/tubesheet welds of various configurations for application in LMFBR steam generators. The scope of this effort was limited to one material (2 1/4 Cr-1Mo), two T/TS weld types (IBW and Orbital) and relatively small tube dimensions (approx. CRBR reference steam generator). It was recognized that larger tubes are, in general, easier to weld and that other combinations of tube materials (Incoloy 800, Inconel 600, 9Cr-1Mo) are feasible; however, metallurgical properties for these materials are being determined in the Advanced Alloy program and are beyond the scope of this effort. The double-wall tubing types evaluated for this study were also limited to tubes with water/steam on the tube side and sodium on the shell.
Date:
February 1, 1976
Creator:
Krankota, J. L.
Object Type:
Report
System:
The UNT Digital Library
Drilling plan: Raft river geothermal exploratory hole No. 3
The program, plans, and procedures to be used in drilling and completion of the Raft River Geothermal Exploratory Hole No. 3(RRGE-3) are described. RRGE-3 will be located in the Raft River valley of south central Idaho, southeast of Burley, and approximately 16 miles south of Malta, Idaho. The third exploratory hole will be drilled to provide data to further investigate and evaluate the geothermal reservoir, as well as to optimize the location of possible future resource and/or injection wells, and to develop methods to reduce the cost of geothermal wells. Plans call for drilling to a total depth of approximately 6,000 ft., or to the depth at which it is either indicated from temperature and test flow data and from logs that an acceptable hot water resource is available or that the hole is accepted as a possible reinjection well. (LBS)
Date:
February 1, 1976
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Effects of internal gas pressure and microstructure on the mechanisms of hot-pressing and swelling in ceramics. Progress report, June 1, 1975--March 31, 1976
Pressurization system components for studying the hot-pressing and swelling behavior of CoO were built. A vacuum furnace was modified so that dimensional changes can be continuously monitored during sintering under high vacuum. Chracterization of the CoO starting powders was initiated. A technique was developed to form geometrically uniform pellet compacts of high green density using low pressure punch and die pressing followed by high pressure isostatic compaction to obtain uniform green density. Preliminary sintering experiments were carried out at 1 atm in air, inert gas, and under vacuum with specimen deflection continuously monitored. Resulting microstructures were characterized using mercury porosimetry and quantitative optical microscopy. Drastic differences in sintering rates in vacuum and air were observed. (DLC)
Date:
February 1, 1976
Creator:
Solomon, A. A.
Object Type:
Report
System:
The UNT Digital Library
Energy flux limitation by tame turbulence
A quasi-linear theory of energy flux limitation by ion acoustic turbulence is presented. This distribution function is modelled by a Maxwellian plus an additional piece which carries a heat flux Q. By taking the fourth moment of the Vlasov equation one finds the anomalous thermal conductivity K approximately 3 v/sub e/ lambda/sub De/ (e phi/T/sub e/)$sup -2$. Other moments treated self-consistently include anomalous ion heating, electron cooling, current generation and enhanced inverse bremsstrahlung due to the nonthermal ion fluctuations. (auth)
Date:
February 1, 1976
Creator:
Manheimer, Wallace M.
Object Type:
Article
System:
The UNT Digital Library
Energy Studies, Volume 1, Number 4, February 1976
Bimonthly newsletter of the Center for Energy Studies at the University of Texas at Austin discussing activities of the Center and other energy-related news.
Date:
February 1976
Creator:
University of Texas at Austin. Center for Energy Studies.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Enhanced penetration of neutral-beam-injected ions by vertically asymmetric toroidal-field ripple
The penetration length of energetic neutral-atom beams injected into a tokamak plasma can be effectively increased by a large factor, if the beams are injected vertically and the toroidal magnetic field has significant ripple below the midplane. The energetic ions resulting from ionization of the fast neutrals are ripple-trapped and drift upward to the midplane region. The ripple must decrease substantially in the region above the midplane, so that the ions can be captured and retained in the central plasma region during their entire slowing-down period. Orbit calculations with a Monte Carlo guiding-center code demonstrate the feasibility of this trapping process. 110 to 150-keV deuterons can be deposited near the center of plasmas with (n/sub e/) a Z/sub eff/ approximately 10/sup 17/ cm/sup -2/, when the ripple near the magnetic axis and in the region below is of order 1 percent.
Date:
February 1, 1976
Creator:
Jassby, D. L. & Goldston, R. J.
Object Type:
Report
System:
The UNT Digital Library
Evaluation of a 4$pi$ neutron counter for the nondestructive analysis of uranium-234 in uranium hexafluoride
A neutron counter has been evaluated for the nondestructive analysis of $sup 234$U in uranium hexafluoride. The instrument was designed by Los Alamos Scientific Laboratory for the Nuclear Safeguards Program. The method assumes that the only source of neutrons is from $sup 19$F($alpha$, n)$sup 22$Na reaction from $sup 238$U, $sup 235$U, and $sup 234$U, the yield from $sup 234$U being the most abundant. This evaluation shows that the mean of the difference between the 4 $pi$ neutron counting method and mass spectrometry is 0.0002 wt percent uranium- 234 +- 0.00015 at the 95 percent confidence level. However, the presence of $sup 232$U produces significant errors in the system. If the neutron technique is to be used for samples containing $sup 232$U in equilibrium with its daughters, the 2.61-MeV gamma peak of $sup 208$Tl must be measured and used to correct for the $sup 232$U. It has been postulated that the neutron counter might also be used to relate the $sup 234$U content of a sample to the $sup 235$U, thus estimating the $sup 235$U concentration. This evaluation notes, however, that in a variety of uranium feeds and enriched product, the $sup 234$U/$sup 235$U ratio varies too widely to enable a …
Date:
February 1, 1976
Creator:
Mullins, W. T.
Object Type:
Report
System:
The UNT Digital Library
Evaluation of waste disposal by shale fracturing
The shale fracturing process is evaluated as a means for permanent disposal of radioactive intermediate level liquid waste generated at the Oak Ridge National Laboratory. The estimated capital operating and development costs of a proposed disposal facility are compared with equivalent estimated costs for alternative methods of waste fixation.
Date:
February 1, 1976
Creator:
Weeren, H. O.
Object Type:
Report
System:
The UNT Digital Library
Examination of fast reactor fuels, FBR analytical quality assurance standards and methods, and analytical methods development: irradiation tests. Progress report, October 1--December 31, 1975. [UO/sub 2/; PuO/sub 2/]
Progress is summarized in the areas of equipment development, analytical chemistry, supporting work, quality assurance, and irradiation tests.
Date:
February 1, 1976
Creator:
Baker, R. D. (comp.)
Object Type:
Report
System:
The UNT Digital Library
Excitation of fast waves by slow waves near the lower-hybrid frequency
Resonant and non-resonant decays of short wavelength lower hybrid waves into long wave-length whistler waves and ion acoustic waves are considered. It is shown that the dominant coupling to the ion acoustic mode arises from the magnetic force producing a pressure variation along the magnetic field lines. The growth rate and the threshold condition for this decay instability compare favorably with other decay instabilities near the lower-hybrid frequency. (auth)
Date:
February 1, 1976
Creator:
Berger, R. L. & Chen, L.
Object Type:
Report
System:
The UNT Digital Library
Experimental and analytical research on the aerodynamics of wind turbines. Mid-term technical report, June 1--December 31, 1975
The successful development of reliable, cost competitive horizontal axis, propeller-type wind energy conversion systems (WECS) is strongly dependent on the availability of advanced technology for each of the system components. Past experience and current studies of this type of wind energy conversion systems have shown that the wind turbine subsystem most significantly effects the system's cost effectiveness and performance capability. Thus adequate technology bases are essential for all elements of the wind turbine design. Information is presented concerning aerodynamic design and performance technology, wind turbine parametric performance study, selection of model wind turbine configurations, and structural design of wind turbine models.
Date:
February 1, 1976
Creator:
Rohrbach, C.
Object Type:
Report
System:
The UNT Digital Library
Experimental investigation of densification of powdered A15 phase in the system Nb--Al--Ge. [Nb/sub 3/(Al, Ge)]
An investigation of the densification of precompounded powder of the A15 phase Nb/sub 3/(Al,Ge) was made. The influence of various parameters such as additives, temperature, pressure and time in sintering of this material was studied. Since cold pressing followed by sintering did not produce sufficient density, the hot pressing technique was used. By hot pressing at 1450/sup 0/C for /sup 1///sub 2/ hour under 6 ksi pressure, about 95 percent densification was achieved. Results provide information that could lead to the development of a viable process for producing superconductors based on this compound. 14 figures, 17 references.
Date:
February 1, 1976
Creator:
Modi, D. P.
Object Type:
Report
System:
The UNT Digital Library
Explicit inverses of some special matrices (with a few computer programs)
Explicit inverses of some classes of special matrices are presented. In Section I, the tridiagonal matrices are discussed. In Section II a discussion is given of an algorithm due to Sherman and Morrison, which is useful in finding the inverse, when an explicit inverse is known for an unperturbed matrix. Section III presents inverses of some patterned matrices. Appendix A and Appendix B contain computer programs of some of the problems discussed in Sections I, II, and III. (auth)
Date:
February 1, 1976
Creator:
Uppuluri, V R. R. & Kirk, B L
Object Type:
Report
System:
The UNT Digital Library
[Fayette County Courthouse]
Photograph of the Fayette County Courthouse (located at 104 Main) in La Grange, Texas.
Date:
February 1, 1976
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[Fayette County Courthouse]
Photograph of the Fayette County Courthouse (located at 104 Main) in La Grange, Texas.
Date:
February 1, 1976
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[Fayette County Courthouse]
Photograph of the Fayette County Courthouse (located at 104 Main) in La Grange, Texas.
Date:
February 1, 1976
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[Fayette County Courthouse]
Photograph of the Fayette County Courthouse (located at 104 Main) in La Grange, Texas.
Date:
February 1, 1976
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[Fayette County Courthouse]
Photograph of the Fayette County Courthouse (located at 104 Main) in La Grange, Texas.
Date:
February 1, 1976
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[Fayette County Courthouse]
Photograph of the Fayette County Courthouse (located at 104 Main) in La Grange, Texas.
Date:
February 1, 1976
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[Fayette County Courthouse]
Photograph of the Fayette County Courthouse (located at 104 Main) in La Grange, Texas.
Date:
February 1, 1976
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[Fayette County Courthouse]
Photograph of the Fayette County Courthouse (located at 104 Main) in La Grange, Texas.
Date:
February 1, 1976
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[Fayette County Courthouse]
Photograph of the Fayette County Courthouse (located at 104 Main) in La Grange, Texas.
Date:
February 1, 1976
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History