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Office of Scientific & Technical Information Technical Reports
4,192
Technical Report Archive and Image Library
510
USGS Topographic Map Collection
420
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363
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123
Texas Register
105
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73
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39
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7
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235
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211
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207
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172
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134
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132
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105
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5,858 Matching Results
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Analysis of the potential of the electrofluid dynamic wind-driven generator
The Electrofluid Dynamic wind-driven generator has been investigated under government supported programs since 1975. The concept features the direct conversion of wind energy into electrical power with virtually no moving parts. Research on this concept has resulted in a detailed operational theory of electrofluid systems and a preliminary conceptual design of a full-scale generator. Analysis of the potential of this concept has established a range for the value indicators and an understanding of its optimization potential and uncertainty. A comparison is made between the value indicators for the Electrofluid Dynamic concept and those of several conventional WECS.
Date:
January 1983
Creator:
Mitchell, Richard
Object Type:
Article
System:
The UNT Digital Library
Analysis of three idealized reactor configurations: plate, pin, and homogeneous. [LMFBR]
Detailed Monte Carlo calculations have been performed for three distinct configurations of an idealized fast critical assembly. This idealized assembly was based on the LMFBR benchmark critical assembly ZPR-6/7. In the first configuration, the entire core was loaded with the plate unit cell of ZPR-6/7. In the second configuration, the entire core was loaded with the ZPR sodium-filled pin calandria. The actual ZPR pin calandria are loaded with mixed (U,Pu) oxide pins which closely match the composition of the ZPR-6/7 plate unit cell. For the present study, slight adjustments were made in the atom concentrations and the length of the pin calandria in order to make the core boundaries and average composition for the pin-cell configuration identical to those of the plate-cell configuration. In the third configuration, the core was homogeneous, again with identical core boundaries and average composition as the plate and pin configurations.
Date:
January 1, 1983
Creator:
McKnight, R.D.
Object Type:
Article
System:
The UNT Digital Library
Analysis of Three Tests of the Unconfined Aquifer in Southern Nassau County, Long Island, New York
This report presents the analysis of "data from three two-day aquifer tests of the unconfined aquifer (water-table_ aquifer in southern Nassau Count, Long Island, during the autumn of 1979.
Date:
1983
Creator:
Linder, Juli B. & Reilly, Thomas E.
Object Type:
Report
System:
The UNT Digital Library
Analysis of validation data sets in the Class A Performance Evaluation Program
The primary objective of the DOE Passive Solar Class A Performance Evaluation Program is to collect, analyze, and archive detailed test data for the rigorous validation of analysis/design tools used for passive solar research and design. This paper presents results of the analysis and qualification of several one- and two-week data sets taken at three Class A test sites for the purpose of validating envelope and thermal-storage-energy-transfer processes in passive solar analysis/design tools. Analysis of the data sets consists of editing the measured data and comparing these data with simulated performance results using public-domain, passive solar analysis tools and a standard reporting format developed for the Class A program. Comparisons of the measured data with results using the DOE-2 computer program are presented.
Date:
January 1, 1983
Creator:
Hunn, B.D.
Object Type:
Article
System:
The UNT Digital Library
Analysis, scale modeling, and full-scale tests of low-level nuclear-waste-drum response to accident environments
This report describes extensive full-scale and scale-model testing of 55-gallon drums used for shipping low-level radioactive waste materials. The tests conducted include static crush, single-can impact tests, and side impact tests of eight stacked drums. Static crush forces were measured and crush energies calculated. The tests were performed in full-, quarter-, and eighth-scale with different types of waste materials. The full-scale drums were modeled with standard food product cans. The response of the containers is reported in terms of drum deformations and lid behavior. The results of the scale model tests are correlated to the results of the full-scale drums. Two computer techniques for calculating the response of drum stacks are presented. 83 figures, 9 tables.
Date:
January 1, 1983
Creator:
Huerta, M.; Lamoreaux, G. H.; Romesberg, L. E.; Yoshimura, H. R.; Joseph, B. J. & May, R. A.
Object Type:
Report
System:
The UNT Digital Library
Analytical applications for delayed neutrons
Analytical formulations that describe the time dependence of neutron populations in nuclear materials contain delayed-neutron dependent terms. These terms are important because the delayed neutrons, even though their yields in fission are small, permit control of the fission chain reaction process. Analytical applications that use delayed neutrons range from simple problems that can be solved with the point reactor kinetics equations to complex problems that can only be solved with large codes that couple fluid calculations with the neutron dynamics. Reactor safety codes, such as SIMMER, model transients of the entire reactor core using coupled space-time neutronics and comprehensive thermal-fluid dynamics. Nondestructive delayed-neutron assay instruments are designed and modeled using a three-dimensional continuous-energy Monte Carlo code. Calculations on high-burnup spent fuels and other materials that contain a mix of uranium and plutonium isotopes require accurate and complete information on the delayed-neutron periods, yields, and energy spectra. A continuing need exists for delayed-neutron parameters for all the fissioning isotopes.
Date:
January 1, 1983
Creator:
Eccleston, G. W.
Object Type:
Article
System:
The UNT Digital Library
Analytical measurements of actinide migration in a laboratory-simulated basalt HLW repository
Described are the analytical methods and results used to determine the migration of actinides in a flowing-groundwater laboratory-simulation of a basalt repository for high-level nuclear waste. The radiochemical methods developed and employed to measure actinide activities in groundwater samples and component surfaces include the use of gamma, X-rays, and alpha spectroscopy, with associated preparation and calibration. These methods include double isotope spiking with Np-235 and Pu-236 for determination of Np-237 and Pu-239 in groundwater, gamma-spectroscopic measurements of rock surfaces for spatially profiling neptunium activity, and a leaching procedure for quantitating the actinide activities on those rock surfaces.
Date:
January 1, 1983
Creator:
Bowers, D.L.; Gerding, T.J.; Fried, S.M.; Vandegrift, G.F. & Seitz, M.G.
Object Type:
Article
System:
The UNT Digital Library
Analytical methods under emergency conditions
This lecture discusses methods for the radiochemical determination of internal contamination of the body under emergency conditions, here defined as a situation in which results on internal radioactive contamination are needed quickly. The purpose of speed is to determine the necessity for medical treatment to increase the natural elimination rate. Analytical methods discussed include whole-body counting, organ counting, wound monitoring, and excreta analysis. 12 references. (ACR)
Date:
January 1, 1983
Creator:
Sedlet, J.
Object Type:
Article
System:
The UNT Digital Library
Analytical response of concrete structures subjected to high temperatures. [LMFBR]
Scenarios of nuclear reactor safety consider the possibility that structural concrete may be subjected to very high temperatures and thus raise the concern of containment integrity. This paper describes the analytical models and numerical tools that were developed for the purpose of studying the high temperature behavior of concrete. A formulation for computing heat conduction and stress analysis is presented and incorporated into the computer code TEMP-STRESS. The code was used to simulate the high temperature concrete response of an existing experiment. Improvements to the analytical model, which represent current research efforts, are also presented.
Date:
January 1, 1983
Creator:
Marchertas, A. H. & Kennedy, J. M.
Object Type:
Article
System:
The UNT Digital Library
Analytical study of the generation and control of orbit errors in the ANL 4-GeV CW electron microtron design
The 4-GeV CW Electron Microtron (GEM) Design has 3 linac sections and 3 dispersive straight sections. Six 60/sup 0/ sector bending magnets separate the linac and dispersion straight sections. A magnetic optical system has been designed within the dispersive straight sections to contain the beam during the 36 or 37 return passes through the linacs. A major concern is the effect of small alignment or field errors on the equilibrium or desired orbit with a relatively strong focussing system. The results of an analytical study which shows the effect of small random errors on the orbit are presented. A study was also undertaken on the control of the orbit position by making error measurements in one dispersive section and making an angular adjustment with a small dipole in the preceding dispersive section. The analysis indicates that the orbit position can be adequately and easily controlled in the presence of random alignment and field errors.
Date:
January 1, 1983
Creator:
Kustom, R.L.
Object Type:
Article
System:
The UNT Digital Library
Analytical throughput-estimating methods for the Hot Fuel Examination Facility. [LMFBR]
The Hot Fuel Examination Facility (HFEF) supports the operation and experimental programs of the major Liquid Metal Fast Breeder Reactor (LMFBR) test facilities; specifically, the Fast Flux Test Facility (FFTF), the Experimental Breeder Reactor II (EBR-II), and the Transient Reactor Test (TREAT) Facility. Successful management of HFEF and of LMFBR safety and fuels and materials programs, therefore, requires reliable information regarding HFEF's capability to handle expected or proposed program work loads. This paper describes the 10-step method that has been developed to consider all variables which significantly affect the HFEF examination throughput and quickly provide the necessary planning information.
Date:
January 1, 1983
Creator:
Keyes, R. W. & Phipps, R. D.
Object Type:
Article
System:
The UNT Digital Library
Angle-averaged Compton cross sections
The scattering of a photon by an individual free electron is characterized by six quantities: ..cap alpha.. = initial photon energy in units of m/sub 0/c/sup 2/; ..cap alpha../sub s/ = scattered photon energy in units of m/sub 0/c/sup 2/; ..beta.. = initial electron velocity in units of c; phi = angle between photon direction and electron direction in the laboratory frame (LF); theta = polar angle change due to Compton scattering, measured in the electron rest frame (ERF); and tau = azimuthal angle change in the ERF. We present an analytic expression for the average of the Compton cross section over phi, theta, and tau. The lowest order approximation to this equation is reasonably accurate for photons and electrons with energies of many keV.
Date:
January 1, 1983
Creator:
Nickel, George H.
Object Type:
Article
System:
The UNT Digital Library
Angleton: Biological Resources
Map showing biological resources (birds, oysters, fishes, grasses, etc.) in the Angleton region of the Texas Barrier Islands coastline area. Scale 1:100,000.
Date:
1983
Creator:
U.S. Fish and Wildlife Service
Object Type:
Map
System:
The UNT Digital Library
Angleton: Mineral Resources and Selected Oil and Gas Infrastructure
Map showing mineral resources (oil, gas, sand, clay, etc.) in the Angleton region of the Texas Barrier Islands coastline area. Scale 1:100,000.
Date:
1983
Creator:
U.S. Fish and Wildlife Service
Object Type:
Map
System:
The UNT Digital Library
Angleton: Socioeconomic and Natural Features
Map showing various sites and features (recreation sites, water treatment facilities, public lands, historic sites, transportation, etc.) in the Angleton region of the Texas Barrier Islands coastline area. Scale 1:100,000.
Date:
1983
Creator:
U.S. Fish and Wildlife Service
Object Type:
Map
System:
The UNT Digital Library
[An anniversary is always a good time to pause and look at our past.]
A draft statement outlining the history of the North Texas State University Library government documents department in honor of the department's 35th anniversary as a federal depository library.
Date:
1983
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
[Announcement of the Government Documents department of the North Texas State University (NTSU) libraries celebrating 35 years as a depository library]
An announcement of the 35th anniversary of North Texas State University being a federal depository library. This announcement includes information about a celebration to mark the occasion as well as a brief history of the department.
Date:
1983
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
Annual progress report, July 1, 1982-June 30, 1983
The research program is carried out in three laboratory units: (1) The Laboratory of Biomolecular and Cellular Sciences focuses on fundamental cellular processes such as proliferation, differentiation, gene expression and ecogenic transformation, particularly as related to endogenous factors and energy-related exogenous factors; (2) The Laboratory of Environmental Biology uses two primary study sites to address basic arid-region process studies. The long range goal of this program is the generation of data which will lead to the development of models having predictive value. Knowledge of physiological processes in both plants and animals, particularly as influenced by environmental conditions, is required to understand the structure and dynamics of the ecosystems. The carbon, nutrient and hydrological cycles require greater attention and will be the subject of research programs in the near future; and (3) The Laboratory of Nuclear Medicine measures the physiological behavior of small parts of the brain and heart in health and disease using radioactive tracer techniques employing emission computed tomography. The method is developed technically by rapidly synthesizing biological indicators labeled with short-lived positron emitting radionuclides produced in the laboratory cyclotron. Mathematical models are developed to explain the body distributions of these indicators which are imaged with emission tomographs. This …
Date:
January 1, 1983
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Annular burnout data from rod-bundle experiments. [PWR]
Burnout data for annular flow in a rod bundle are presented for both transient and steady-state conditions. Tests were performed at the Oak Ridge National Laboratory in the Thermal Hydraulic Test Facility (THTF), a pressurized-water loop containing an electrically heated 64-rod bundle. The bundle configuration is typical of later generation pressurized-water reactors with 17 x 17 fuel arrays. Both axial and radial power profiles are flat. All experiments were carried out in upflow with subcooled inlet conditions, insuring accurate flow measurement. Conditions within the bundle were typical of those which could be encountered during a nuclear reactor loss-of-coolant accident.
Date:
January 1, 1983
Creator:
Yoder, G.L.; Morris, D.G. & Mullins, C.B.
Object Type:
Article
System:
The UNT Digital Library
Antares beam-alignment-system performance
The beam alignment system for the 24-beam-sector Antares CO/sub 2/ fusion laser automatically aligns more than 200 optical elements. A visible-wavelength alignment technique is employed which uses a telescope/TV system to view point-light sources appropriately located down the beamline. The centroids of the light spots are determined by a video tracker, which generates error signals used by the computer control system to move appropriate mirrors in a closed-loop system. Final touch-up alignment is accomplished by projecting a CO/sub 2/ alignment laser beam through the system and sensing its position at the target location. The techniques and control algorithms employed have resulted in alignment accuracies exceeding design requirements. By employing video processing to determine the centroids of diffraction images and by averaging over multiple TV frames, we achieve alignment accuracies better than 0.1 times system diffraction limits in the presence of air turbulence.
Date:
January 1, 1983
Creator:
Appert, Q. D. & Bender, S. C.
Object Type:
Article
System:
The UNT Digital Library
Antares Reference Telescope System
Antares is a 24-beam, 40-TW carbon-dioxide laser-fusion system currently nearing completion at the Los Alamos National Laboratory. The 24 beams will be focused onto a tiny target (typically 300 to 1000 ..mu..m in diameter) located approximately at the center of a 7.3-m-diameter by 9.3-m-long vacuum (10/sup -6/ torr) chamber. The design goal is to position the targets to within 10 ..mu..m of a selected nominal position, which may be anywhere within a fixed spherical region 1 cm in diameter. The Antares Reference Telescope System is intended to help achieve this goal for alignment and viewing of the various targets used in the laser system. The Antares Reference Telescope System consists of two similar electro-optical systems positioned in a near orthogonal manner in the target chamber area of the laser. Each of these consists of four subsystems: (1) a fixed 9X optical imaging subsystem which produces an image of the target at the vidicon; (2) a reticle projection subsystem which superimposes an image of the reticle pattern at the vidicon; (3) an adjustable front-lighting subsystem which illuminates the target; and (4) an adjustable back-lighting subsystem which also can be used to illuminate the target. The various optical, mechanical, and vidicon design …
Date:
January 1, 1983
Creator:
Viswanathan, V.K.; Kaprelian, E.; Swann, T.; Parker, J.; Wolfe, P.; Woodfin, G. et al.
Object Type:
Article
System:
The UNT Digital Library
Anton Northeast Quadrangle
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:24000
Date:
1983
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Aperture limits due to the presence of higher-magnetic-field multipoles
Superconducting magnets tend to produce magnetic fields which have larger higher systematic multipoles and larger random multipoles than conventional magnets. In superconducting magnets the magnetic field shape is determined by the current distribution rather than the shape of an iron surface. Higher systematic magnetic field multipoles are then generated by necessary deviations of the current distribution from the ideal desired distribution; random multipoles are generated by errors in the location of the current carrying conductors. The presence of these undesired field multipoles will limit the good field aperture of the accelerator. One effect of these multipoles is that they will distort the working line, the dependencies of the nu-values, nu/sub x/, nu/sub y/, on the momentum ..delta..p/p. Another effect of these multiples is to produce linear and non-linear stop bands. This paper is concerned primarily with aperture limits due to distortion of the working line. For the systematic field multipoles in the CBA, the distortion of the working line leads to a set of allowed values or tolerances for these higher systematic multiples. For the higher random field multiples, the distortion of the working line limits the good field aperature in the CBA at about the momentum spread of ..delta..p/p …
Date:
January 1, 1983
Creator:
Parzen, G.
Object Type:
Article
System:
The UNT Digital Library
Aperture studies of the BNL colliding beam accelerator with reduced superperiodicity
Chromatic properties of the Brookhaven CBA (Colliding Beam Accelerator) with one low ..beta.. insertion in each of the three superperiods have been studied using the PATRICIA particle tracking program. Systematic multipoles of order 5 < n less than or equal to 10 as well as random multipoles of order 1 less than or equal to n less than or equal to 10 are, along with random closed orbit errors and sagitta effects, included when determining the aperture of the lattice. 3 references, 6 figures.
Date:
January 1, 1983
Creator:
Dell, G.F.
Object Type:
Report
System:
The UNT Digital Library