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Eucalyptus plantations for energy production in Hawaii. Technical status report, October 1, 1978-June 30, 1980
Progress made on accomplishing research objectives is reported. The objectives of this project are: (1) to increase the biomass production of Eucalyptus; (2) to determine the optimum requirements to maximize yield; (3) to assess planting, cultivation, harvesting, and transportation equipment requirements; (4) to determine the optimum mixture of biomass (eucalyptus and bagasse) at the generator for the production of electricity; and (5) to evaluate a complete production/conversion system which utilized optimum management conditions in relationship to costs. (DMC)
Date:
July 14, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Exact calculations of nuclear-recoil energies from prompt gamma decays resulting from neutron capture
The results of an accurate determination of the recoil spectrum from (n, ..gamma..) reactions in molybdenum are presented. The recoil spectrum has been calculated from nuclear level structure data and measured branching ratios. Angular correlations between successive gammas have been accounted for using the standard theoretical techniques of Racah algebra and the density matrix formalism.
Date:
July 20, 1981
Creator:
Kinney, J.H.
Object Type:
Report
System:
The UNT Digital Library
Comparative ranking of 0. 1-10 MW/sub e/ solar thermal electric power systems. Volume II. Supporting data. Final report
This report is part of a two-volume set summarizing the results of a comparative ranking of generic solar thermal concepts designed specifically for electric power generation. The original objective of the study was to project the mid-1990 cost and performance of selected generic solar thermal electric power systems for utility applications and to rank these systems by criteria that reflect their future commercial acceptance. This study considered plants with rated capacities of 1-10 MW/sub e/, operating over a range of capacity factors from the no-storage case to 0.7 and above. Later, the study was extended to include systems with capacities from 0.1 to 1 MW/sub e/, a range that is attractive to industrial and other nonutility applications. Volume I summarizes the results for the full range of capacities from 0.1 to 1.0 MW/sub e/. Volume II presents data on the performance and cost and ranking methodology.
Date:
July 1, 1980
Creator:
Thornton, J.P.; Brown, K.C.; Finegold, J.G.; Gresham, J.B.; Herlevich, F.A. & Kriz, T.A.
Object Type:
Report
System:
The UNT Digital Library
Detailed Stress Analysis of SM-1 Steam Generator Tube Sheet
The detailed stress analysis of the SM-1 steam generator tube sheet showed it to be safe from strain cycling damage. However, the pressure stresses were greater than the yield strength during the hydrostatic test. The differential between pressure stresses and yield strength indicates that some initial deformation may have taken place in the tube sheet. (auth)
Date:
July 11, 1962
Creator:
Busuttil, J. J. & Chittum, R. A.
Object Type:
Report
System:
The UNT Digital Library
Input and decayed values of radioactive liquid wastes discharged to the ground in the 200 Areas through 1975
Low and intermediate level liquid wastes from chemical separations processing of spent reactor fuel elements have been discharged to the ground in the 200-Areas since 1944. Large volumes of process cooling water, normally free of radioactive contaminants, are discharged to surface ditches or natural surface depressions (ponds). Lesser volumes of liquid waste such as steam condensates, process condensates, scavenged process waste supernatants, and plutonium processing wastes have been, or are being discharged to subsurface disposal sites (cribs). Only input volumes and radioactivity discharged to each disposal site have been reported periodically.
Date:
July 8, 1976
Creator:
Anderson, J. D.
Object Type:
Report
System:
The UNT Digital Library
Wells 1/sup 0/ x 2/sup 0/ NTMS area, Nevada. Data report (abbreviated)
Surface sediment samples were collected at 1336 sites, at a target sampling density of one site per 13 square kilometers. Ground water samples were collected at 112 sites. Neutron activation analysis results are given for uranium and 16 other elements in sediments, and for uranium and 9 other elements in ground water and surface water. Mass spectrometry results are given for helium in ground water. Field measurements and observations are reported for each site. Data from ground water and surface water sites include (1) water chemistry measurements (pH, conductivity, and alkalinity), (2) physical measurements where applicable (water temperature, well description, and scintillometer reading), and (3) elemental analyses (U, Al, Br, Cl, Dy, F, Mg, Mn, Na, and V). Helium analyses are given for ground water. Data from sediment sites include (1) stream water chemistry measurements from sites where water was available, and (2) elemental analyses for sediment samples (U, Th, Hf, Al, Ce, Dy, Eu, Fe, La, Lu, Mn, Sc, Sm, Na, Ti, V, and Yb). Areal distribution maps, histograms, and cumulative frequency plots for most elements; U/Th, U/Hf, U/(Th + Hf), and U/La ratios; and scintillometer readings at sediment sample sites are included.
Date:
July 1, 1980
Creator:
Cook, J. R.
Object Type:
Report
System:
The UNT Digital Library
Mechanical Engineering Department technical abstracts
The Mechanical Engineering Department publishes listings of technical abstracts twice a year to inform readers of the broad range of technical activities in the Department, and to promote an exchange of ideas. Details of the work covered by an abstract may be obtained by contacting the author(s). Overall information about current activities of each of the Department's seven divisions precedes the technical abstracts.
Date:
July 1, 1982
Creator:
Denney, R.M. (ed.)
Object Type:
Report
System:
The UNT Digital Library
Conceptual design of a laser-fusion power plant. Part II. Two technical options: 1. JADE reactor; 2. Heat transfer by heat pipes
A laser fusion reactor concept is described that employs liquid metal walls. The concept envisions a porous medium, called the JADE, of specific geometry lining the reactor cavity. Some advantages and disadvantages of the concept are pointed out. The possibility of using heat pipes for passive cooling in ICF reactors is discussed. Some of the problems are outlined. (MOW)
Date:
July 1, 1981
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Methane entrained in geopressured aquifers, Texas Gulf Coast
Six tests of geopressured aquifers have yielded between 3.6 to 4.5 m/sup 3//m/sup 3/ (20 to 25 scf/bbl) of gas. These low gas concentrations are attributed to high salinities, that in all tests exceeded 100,000 mg/l, but undersaturated conditions cannot be ruled out completely. Research efforts are designed to delineate the geographic and stratigraphic variations in salinity and to recognize regional and local trends so that zones of lower salinity and higher gas concentration can be identified. Moreover, well logs and seismic data are being used to develop methods of detecting low concentrations of free gas in watered-out gas sands and in thin sands that were considered as noncommercial prior to renewed interest in unconventional gas supplies. (MHR)
Date:
July 1, 1980
Creator:
Morton, R. A.
Object Type:
Article
System:
The UNT Digital Library
Catalyst and process development for hydrogen preparation from future fuel cell feedstocks. Quarterly report, April 1-June 30, 1980. [Pt/Pd]
Phase II of the contract, which involved catalyst preparation and evaluation, was nearly completed this quarter. Phase III, which calls for the design and construction of a fuel processor, was started. During the quarter, four types of tests were run on the small scale catalyst screening unit. The operating line for coke-free operations was found to be approximately between 0.41 to 0.44 O/sub 2//C level. Screening at lower O/sub 2//C levels led to problems with plugging. In other tests, increased severity for screening steam reforming catalysts was obtained by doubling the space velocity. Another series of tests were run to determine the gas composition from the catalytic partial oxidation (CPO) section and to evaluate two CPO catalysts. In the other series of tests, catalysts were aged for about 20 hours using a propane, steam, and air mixture before testing with No. 2 oil for another five hours. This latter test has been used to study Pt/Rh catalysts made with various supports. Differences were readily determined for Pt/Rh supported on alpha alumina and Pt/Rh supported on stabilized alumina. This test method will find continued use in evaluating metal-support interactions. Several samples must be evaluated by this method before aging runs are …
Date:
July 1, 1980
Creator:
Yarrington, R M; Feins, I R & Hwang, H S
Object Type:
Report
System:
The UNT Digital Library
Candidate wind turbine generator site: annual data summary, January 1981-December 1981
Summarized hourly meteorological data for 34 candidate and wind turbine generator sites for calendar year 1981 are presented. These data are collected for the purpose of evaluating the wind energy potential at these sites and are used to assist in selection of potential sites for installation and testing of large wind turbines in electric utility systems. For each site, wind speed, direction, and distribution data are given in eight tables. Use of information from these tables, with information about specific wind turbines, should allow the user to estimate the potential for wind energy production at each site.
Date:
July 1, 1982
Creator:
Sandusky, W. F.; Buck, J. W.; Renne, D. S.; Hadley, D. L. & Abbey, O. B.
Object Type:
Report
System:
The UNT Digital Library
Some Scoping Experiments for a Space Reactor
Some scoping experiments were performed to evaluate fuel performance in a lithium heat pipe reactor operating at a nominal 1500K heat pipe temperature. Fuel-coolant and fuel-coolant-clad relationships showed that once a failed heat pipe occurs temperatures can rise high enough so that large concentrations of uranium can be transported by the vapor phase. Upon condensation this uranium would be capable of penetrating heat pipes adjacent to the failed pipe. The potential for propagation of failure exists with UO/sub 2/ and a lithium heat pipe. Changing the composition of the metal of the heat pipe would have only a second order effect on the kinetics of the failure mechanism. Uranium carbide and nitride were considered as potential fuels which are nonreactive in a lithium environment. At high temperatures the nitride would be favored because of its better compatibility with potential cladding materials. Compositions of UN with small additions of YN appear to offer very attractive properties for a compact high temperature high power density reactor.
Date:
July 7, 1983
Creator:
Alexander, C. A. & Ogden, J. S.
Object Type:
Report
System:
The UNT Digital Library
Spectrophotometric studies of solutions at elevated temperatures and pressures: status and program for FY1961 and part of FY 1962
A program was initiated on the spectrophotometric study of aqueous solution chemistry. The goal is operation at temperatures up to at least 330 deg C and at pressures up to 200 atm, and to near the critical point if this appears to be feasible. A spectrometer capable of operation under these extreme conditions is being designed. (W.L.H.)
Date:
July 19, 1960
Creator:
Biggers, R. E. & Chilton, J. M.
Object Type:
Report
System:
The UNT Digital Library
Surface, interface and thin-film magnetism
In the last quarter of the 20th century, with the information revolution and the ever growing need to acquire, store, and retrieve information, the science and technologies attached to magnetic recording have experienced an explosive growth. Central to those pursuits has been the materials science of magnetism as it applies to surfaces, interfaces, and thin films. This report discusses topics on thin-film magnetism such as: theory, physical effects, prospects, opportunities and future developments. (JL)
Date:
July 1, 1991
Creator:
Falicov, L.M. (Lawrence Berkeley Lab., CA (United States) California Univ., Berkeley, CA (United States). Dept. of Physics)
Object Type:
Article
System:
The UNT Digital Library
Studies of Plasma Transport
This report discusses the charge-coupled device camera and other plasma diagnostic equipment used to measure plasma density and other plasma properties. (LSP)
Date:
July 22, 1991
Creator:
Malmberg, J. H.; O'Neil, T. M. & Driscoll, C. F.
Object Type:
Report
System:
The UNT Digital Library
A search for the production of the final states. tau. sup +. tau. sup minus e sup + e sup minus ,. tau. sup +. tau. sup minus. mu. sup +. mu. sup minus , and. tau. sup +. tau. sup minus. pi. sup +. pi. sup minus in e sup + e sup minus collisions at radical s = 29 GeV
We have searched for the reaction e{sup +}e{sup {minus}} {yields} {tau}{sup +}{tau}{sup {minus}}{bar f}f, where f is either an electron, muon, or charged pion, at {radical}s = 29 GeV using the Mark 2 detector at the PEP storage ring. One candidate event is found while 2.3 events are expected from known processes. We would expect to see 11 events if the cross-section for e{sup +}e{sup {minus}} {yields} {tau}{sup +}{tau}{sup {minus}}{bar f}f at {radical}s = 29 GeV were enhanced by the factor of 4.7 which the ALEPH collaboration reports for {radical}s = 91 GeV. we also look for e{sup +}e{sup {minus}} {yields} e{sup +}e{sup {minus}}{bar f}f and e{sup +}e{sup {minus}} {yields} {mu}{sup +}{mu}{sup {minus}} {bar f}f, and for e{sup +}e{sup {minus}} {yields} {tau}{sup +}{tau}{sup {minus}} {gamma} using a similar analysis procedure and see the number of events predicted by the standard model. 10 refs., 5 figs., 3 tabs.
Date:
July 1, 1991
Creator:
unknown
Object Type:
Article
System:
The UNT Digital Library
CP violation in the six-quark model
Some of the recent work on CP violation in the six-quark model is reviewed.
Date:
July 1, 1980
Creator:
Wise, M.B.
Object Type:
Article
System:
The UNT Digital Library
Direct observations of the primary state of radiation damage of ion-irradiated tungsten and platinum
A brief summary was presented of all the Cornell work on the primary state of radiation damage in ion-irradiated tungsten and platinum. The primary research tool for all this research was the field-ion microscope (FIM); the FIM was ideally suited for this research because of its excellent atomic resolution and the ability to examine the interior of the specimens, as a result of the field-evaporation effect. This paper summarized, in outline form, the following items: (1) the principal experimental quantities determined from the analyses performed on all the individual depleted zones (DZs) observed; (2) the main experimental programs; (3) a number of the more important results and conclusions concerning the vacancy structure of DZs; and (4) the three-dimensional spatial distribution of self-interstitial atoms around DZs in tungsten which had been irradiated and examined in situ at 10/sup 0/K.
Date:
July 1, 1980
Creator:
Seidman, D. N.; Current, M. I.; Pramanik, D. & Wei, C. Y.
Object Type:
Article
System:
The UNT Digital Library
Computer Technology and Congressional Operations: Selected References
This report serves as a series of citations indicating an increased interest in automatic data processing (ADP) within the United States Congress.
Date:
July 17, 1969
Creator:
Chartrand, Robert L. & Ayton, Mauree W.
Object Type:
Report
System:
The UNT Digital Library
References to Safeguards, Physical Security, and Related Matters in the Nuclear Non-proliferation Act of 1978 (P.L. 95-242)
This report includes tables and excerpts of references to safeguards, physical security, and related matters in the Nuclear Non-proliferation Act of 1978.
Date:
July 7, 1978
Creator:
Kramer, Donna S. & Donnelly, Warren H.
Object Type:
Report
System:
The UNT Digital Library
Desegregation in Education, August 1966-June 15, 1970: Pro and Con Selected References
This report provides a bibliography of resources related to desegregation in education from August 1966 to June 15, 1970 divided by material type.
Date:
July 20, 1970
Creator:
Kesler, Linda S.; Kornblith, Sally J. & Miller, Helen A.
Object Type:
Report
System:
The UNT Digital Library
Military Sysytems directory
This report is a directory of military services
Date:
July 15, 1970
Creator:
Armed Forces Management
Object Type:
Report
System:
The UNT Digital Library
Discussions of the Health Care System in America: A Selected Bibliography
This report provides a bibliography of resources related to the health care system in the United States
Date:
July 22, 1970
Creator:
Cavalier, Kathleen
Object Type:
Report
System:
The UNT Digital Library
Hydrogeochemical and Stream Sediment Reconnaissance Basic Data for Grand Island NTMS Quadrangle, Nebraska; Kansas: Appendix C
Data collected as part of a hydrogeochemical and stream sediment reconnaissance of Grand Island NTMS quadrangle in Kansas and Nebraska including laboratory data on well water and stream sediments as well as field data.
Date:
July 31, 1980
Creator:
National Uranium Resource Evaluation Program
Object Type:
Dataset
System:
The UNT Digital Library