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197 Matching Results
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Economics of thermodynamic solar power systems. II. The turbine trade-off
None
Date:
September 19, 1973
Creator:
Wouters, L. F.
Object Type:
Report
System:
The UNT Digital Library
HPGe Compton-suppression and pair spectrometer
A HPGe detector incorporated into a Compton suppression and pair spectrometer yields a continuum suppression factor of over 30. Cryostat housing requirements to obtain such suppression are discussed, sample spectra are presented, and several experiments making use of the HPGe dual system are discussed.
Date:
May 19, 1976
Creator:
Camp, D. C.
Object Type:
Article
System:
The UNT Digital Library
DT fusion neutron irradiation of LLL vanadium tensile specimens, BPNL wire-foil packet, LLL Nb/sub 3/Sn tape, LLL carbon resistor, LLL glass samples, and LLL thermoelectric temperature sensors
The above specimens were irradiated with 14-MeV neutrons from the LLL Rotating Target Neutron Source. Only the test procedure is described. (MOW)
Date:
July 19, 1976
Creator:
MacLean, S. C.
Object Type:
Report
System:
The UNT Digital Library
Measurement of the neutron-induced fission cross section of /sup 241/Am relative to /sup 235/U from 0. 001 to 30 MeV. [0. 2 to 30 MeV]
The work described in this report represents a continuation of the fission cross section ratio measurements in progress at the Lawrence Livermore Laboratory. Preliminary results are provided for the /sup 241/Am//sup 235/U fission cross section ratio from 0.2 to 30 MeV. Upper limits on this ratio are given over broad energy bands from 0.001 to 0.2 MeV. Using the threshold cross section method, the value of 1.616 +- 0.042 is obtained for the cross section ratio in the interval 1.75 to 4.00 MeV.
Date:
November 19, 1976
Creator:
Behrens, J. W. & Browne, J. C.
Object Type:
Report
System:
The UNT Digital Library
InterTechnology Corporation cost/benefit analysis report and supporting opinion survey commerical buildings National Solar Demonstration program
Under the Solar Heating and Cooling Demonstration program, solar heated and cooled commercial buildings are to be constructed throughout the nation to show the technical and economic feasibility of solar energy systems and, most importantly, to establish an economically viable solar industry. The questions arise: How many solar energy systems must be installed and where should they be installed to meet these objectives. This report presents an answer to these questions.
Date:
January 19, 1976
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Investigation and Evaluation of Geopressured-Geothermal Wells; Detailed Reentry Prognosis for Geopressure-Geothermal Testing of State Lease 4183 No. 1 Well
None
Date:
May 19, 1978
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Core Component Pot
The core component pot is an open top vessel used to hold both new and irradiated core components for storage in the IDS and for holding the components submerged in sodium while being trasported inside CLEM. The top of the CCP is equipped with a grapple lip which is engaged by the hoisting grapples. Heat for maintaining the preheat of new components and dissipation of decay heat of irradiated fuel assemblies is conducted between the wall of the pot and the surrounding environment by thermal radiation and convection.
Date:
December 19, 1975
Creator:
Martin, R. L. & Omberg. R. P.
Object Type:
Report
System:
The UNT Digital Library
Proposed Emulsion Experiment Search for Short Lived Particles at High Energies
It is proposed to conduct an experiment at the National Accelerator Laboratory concerned with the search for new particles having lifetimes between 10{sup -17} and 10{sup -12} second. The experiment will be conducted with an emulsion chamber arranqement and will explore for particles with lifetimes too short to be observed directly with other instruments. Two sidelines of the experiment will be concerned with an improved measurement of the lifetime of the neutral pion and the search for gamma ray bundles arising from higher mass resonances which cannot decay by pion emission.
Date:
April 19, 1972
Creator:
Kotzer, Peter; Lord, J.J. & U., /Washinton
Object Type:
Report
System:
The UNT Digital Library
Evaluate trade-offs between I/sub sp/ and lifetime for a specified fuel elements state-of-the-art
None
Date:
February 19, 1971
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Static stress analysis of axisymmetric solids with material and geometric nonlinearities by the finite element method
None
Date:
January 19, 1973
Creator:
Hartzman, M.
Object Type:
Report
System:
The UNT Digital Library
Mechanical Properties of Blair Dolomite
Pressure-volume, uniaxial stress loading to failure, uniaxial strain, and acoustic velocity determinations were made on Blair dolomite at confining pressures ranging to 3.5 GPa (Pa = Paschals where 10/sup 5/ Pa = 1 bar or 0.1 GPa = 1 kbar). The bulk modulus K, rapidly rises from an initial 10.4 GPa (at atmospheric pressure) to 102.0 GPa at 1 GPa pressure. At higher pressures, K remains essentially constant (110 GPa). The maximum volume change on loading is 3.9% at 3.5 GPa; the unloading closely follows the loading path. Comparison of uninxial stress tests in compression to 0.7 GPa and extension to 2.1 GPa confining pressure demonstrates that the characteristic shear stress at failure as well as the transition from brittle fracture to ductile flow is strongly dependent upon both the value of the intermediate principal stress sigma /sub 2/ and the rate of strain. The onset of dilatancy as determined in uniaxial compression occurs at about two-thirds of the failure stress. The uniaxial strain loading path is well below the failure envelope in compression. In uniaxial stress loading (compression), Young' s modulus (E) and shear modulus ( mu ) are demonstrated to be very sensitive to both confining pressure and …
Date:
October 19, 1973
Creator:
Heard, H. C.; Duba, A.; Abey, A. E. & Schock, R. N.
Object Type:
Report
System:
The UNT Digital Library
High-pressure mechanical properties of an Area 12, Nevada Test Site tuff
The mechanical properties of tuff from instrument hole UG3, tunnel U12e.06 at the Nevada Test Site have been investigated to 1400 MPa, The shear strength increases from about 5 MHa unconfined to 12 MPa at 300 MPa mean pressure. A brittle-ductile transition was indicated at about 250 MPa. In uniaxial strain, the sample loads to the vicinity of the failure envelope and then is parallel to that envelope up to the highest stresses, 420 MPa. Hydrostatic pressure of 1400 MPa produces about 9% volume compression and 1.3% permanent compaction in this apparently saturated tuff. (auth)
Date:
November 19, 1973
Creator:
Duba, A.; Abey, A. E. & Heard, H. C.
Object Type:
Report
System:
The UNT Digital Library
Effect of stratospheric aerosol on longwave radiative fluxes: variation with latitude and season
None
Date:
July 19, 1974
Creator:
Luther, F. M.
Object Type:
Report
System:
The UNT Digital Library
New transient surface-current sensor and recorder
It was demonstrated that a transient surface-current pulse can be sensed and recorded by a graded-Hc film, a magnetic film with the coercive force Hc varying along the length of the film. Information on the magnitude of the current can be obtained by comparing the domain-wall location with the distribution of Hc value along the film. The transient characteristic of the current pulse can be deduced from the V-shaped configuration of the domain wall. (auth)
Date:
October 19, 1973
Creator:
Hsieh, E. J. & Vindelov, K. E.
Object Type:
Report
System:
The UNT Digital Library
Draft standard format and content of Physical Protection Section of license application for fuel reprocessing and certain special nuclear material facilities. Report No. 141
None
Date:
December 19, 1973
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
High-density fusion and the Z-pinch
None
Date:
September 19, 1973
Creator:
Hartman, C. W.
Object Type:
Report
System:
The UNT Digital Library
Thin film evaporation-theory
None
Date:
May 19, 1970
Creator:
Van Sant, J.H.
Object Type:
Report
System:
The UNT Digital Library
Fatigue of welded 5083 aluminum alloy
A failure analysis was conducted on an aluminum (5083) structure subjected to fatigue testing. Failure occurred by fatigue in an electron-beam weld; the cycles to failure were reasonable for the loading conditions. (5 figures) (auth)
Date:
December 19, 1973
Creator:
Hanafee, J. E.
Object Type:
Report
System:
The UNT Digital Library
High-level waste solidification: applicability of fluidized-bed calcination to commercial wastes
None
Date:
April 19, 1974
Creator:
Dickey, B. R.; Wheeler, B. R. & Buckham, J.A.
Object Type:
Article
System:
The UNT Digital Library
Development of a reliable, low-cost, energy-storage capacitor for laser pumping
None
Date:
February 19, 1975
Creator:
Hutzler, J.R. & Gagnon, W.L.
Object Type:
Article
System:
The UNT Digital Library
Analyzing of surface-motion data from Old Reliable Mine blast
None
Date:
July 19, 1973
Creator:
Sisemore, C. J.
Object Type:
Report
System:
The UNT Digital Library
Computer calculations of laser-driven implosion of spherical pellets of DT
None
Date:
January 19, 1973
Creator:
Thiessen, A. R.; Zimmerman, G. B.; Wood, L. L. & Nuckolls, J. H.
Object Type:
Article
System:
The UNT Digital Library
Some Necessary Conditions on X-Ray Laser Action
Guide for attempting to design, conduct and analyse x-ray laser experiments.
Date:
July 19, 1973
Creator:
Slutz, Stephen; Zimmerman, George; Lokke, William; Chapline, George & Wood, Loweli
Object Type:
Article
System:
The UNT Digital Library
Electrochemistry of aqueous corrosion: uranium and its alloys
None
Date:
September 19, 1974
Creator:
Bullock, J.S.; Brown, A.D. & Dobbins, A.G.
Object Type:
Report
System:
The UNT Digital Library