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Design and operation of an inert gas facility for thermoelectric generator storage

Description: While the flight hardware is protected by design from the harsh environments of space, its in-air storage often requires special protection from contaminants such as dust, moisture and other gases. One of these components, the radioisotope thermoelectric generator (RTG) which powers the missions, was deemed particularly vulnerable to pre-launch aging because the generators remain operational at core temperatures in excess of 1000 degrees centigrade throughout the storage period. Any oxygen perm… more
Date: January 1, 1990
Creator: Goebel, C. J.
Partner: UNT Libraries Government Documents Department
open access

Predicting aquatic macrophyte modeling of a new freshwater lake using remote sensing

Description: Par Pond and L Lake are reservoirs on the Savannah River Site in South Carolina. Beds of aquatic macrophytes (primarily cattail and waterlilies) exist in Par Pond and are now beginning to develop in L Lake. Biophysical knowledge about Par Pond was used to develop environmental constraint criteria' to predict the future spatial distribution of aquatic macrophytes in L Lake. The L Lake biophysical data were placed in a 5 {times} 5 m raster geographic information system (GIS) and analyzed using Bo… more
Date: January 1, 1992
Creator: Jensen, J. R.; Narumalani, S.; Weatherbee, O.; Morris, K. S., Jr. & Mackey, H. E., Jr.
Partner: UNT Libraries Government Documents Department
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Structural analysis of the central Columbia Plateau utilizing radar, digital topography, and magnetic data bases

Description: Interest in the Hanford site (Washington) as a nuclear production, power, and waste disposal site has led to generation of a vast quantity of geophysical and remote sensing data sets of the central Columbia Plateau. To data, these various studies, including at least 13 independent magnetic linear and image lineament studies, have not been adequately correlated. Therefore, these studies provide a unique opportunity to compare and contrast the viability of the different geophysical and remote sen… more
Date: August 1, 1991
Creator: Thiessen, R. L.; Eliason, J. R.; Johnson, L. K.; Brougher, C. W. (Washington State Univ., Pullman, WA (United States). Dept. of Geology); Foley, M. G. & Beaver, D. E. (Pacific Northwest Lab., Richland, WA (United States))
Partner: UNT Libraries Government Documents Department
open access

On-line uranium determination using remote fiber fluorimetry

Description: Remote Fiber Fluorimetry (RFF) is being developed at Savannah River Laboratory for the on-line determination of uranium in plant process streams. A prototype system suitable for plant use has been designed and is being built. RFF has four major components: a laser, an optical fiber, an optrode, and a detector. Essentially, an optical fiber carries laser radiation from a laser to a process sampling point. An optrode (the optical analog of an electrode) couples the laser light into a sample solut… more
Date: January 1, 1985
Creator: Malstrom, R A
Partner: UNT Libraries Government Documents Department
open access

Trends in exploration and exploration equipment for uranium

Description: Uranium exploration once again is in a ''boom'' cycle. The energy needs of the OPEC and non-OPEC countries alike have created a demand for uranium which appears certain to increase in future years. In turn, this demand has stimulated a dramatic rise in both the price of uranium and the exploration activity necessary to discover new reserves. One immediate reaction to the sudden increase in uranium exploration activity has been the evaluation of old exploration methods and equipment. This paper … more
Date: January 1, 1976
Creator: Raitz, C.H.
Partner: UNT Libraries Government Documents Department
open access

Remote detection of atmospherically dispersed vegetative cells using fluorescence LIDAR

Description: A uv fluorescence LIDAR system is employed for the long range detectio of atmospherically dispersed biological particles (e.g. Bacillus thuringiensis) released from an aerosol generator. 1 ref., 2 figs.
Date: January 1, 1991
Creator: Tiee, J. J.; Eichinger, W. E.; Hof, D. E.; Holtkamp, D. B.; Karl, R. R. Jr.; Martinez, R. J. et al.
Partner: UNT Libraries Government Documents Department
open access

Isolated data acquisition system for high voltage applications

Description: This report describes the design and operation of a microcomputer controlled system for acquisition of both analog and binary data within the high voltage stages of a linac modulator. The system is comprised of a microprocessor Controller which communicates with the remote data Acquisition circuits via an optical bus. The bus, which uses a 1 MHz Manchester II format, is configured as a loop, starting at the Controller, daisy-chaining the remote cards and terminating back at the Controller. Upon… more
Date: June 1, 1985
Creator: Waitz, A. & Donaldson, A.
Partner: UNT Libraries Government Documents Department
open access

Remote sensing applications of the extended radiosity method

Description: In this paper we describe the progress made in the last three years on developing the radiosity method for remote sensing applications. The research covered canopy modeling, volumetric scattering and atmospheric corrections for future analysis of EOS imaging spectrometer data.
Date: January 1, 1992
Creator: Gerstl, S.A.W. & Borel, C.C.
Partner: UNT Libraries Government Documents Department
open access

Atmospheric corrections of land imagery using the extended radiosity method

Description: In this paper we describe an application of the extended radiosity method to compute atmospheric scattering effects over heterogeneous surfaces and to perform the inverse operation: to correct for such atmospheric effects. The radiosity method is used to compute point-spread-functions. (PSF's) which determine how much light is scattered from an adjacent surface into the field-of-view (FOV) of a sensor above the atmosphere. We show that the PSF's are in general asymmetric for pointable airborne … more
Date: January 1, 1992
Creator: Borel, C.C. & Gerstl, S.A.W.
Partner: UNT Libraries Government Documents Department
open access

Expert system applications in support of system diagnostics and prognostics at EBR-II

Description: Expert systems have been developed to aid in the monitoring and diagnostics of the Experimental Breeder Reactor-II (EBR-II) at the Idaho National Engineering Laboratory (INEL) in Idaho Falls, Idaho. Systems have been developed for failed fuel surveillance and diagnostics and reactor coolant pump monitoring and diagnostics. A third project is being done jointly by ANL-W and EG G Idaho to develop a transient analysis system to enhance overall plant diagnostic and prognostic capability. The failed… more
Date: January 1, 1989
Creator: Lehto, W.K.; Gross, K.C. (Argonne National Lab., Idaho Falls, ID (USA) & Argonne National Lab., IL (USA))
Partner: UNT Libraries Government Documents Department
open access

Off-nadir optical remote sensing from satellites for vegetation identification

Description: Today's satellite remote sensing systems rely heavily on spectral signatures for scene identification from nadir observations. We propose to use angular signatures as complementary scene identifiers when off-nadir sensing is possible. Specifically, the hot spot (Heiligenschein) of plant canopies is recognized as an atmosphere-invariant angular reflectance signature that carries information about the plant stand architecture which may be useful for instant crop identification from off-nadir sate… more
Date: May 30, 1986
Creator: Gerstl, S.A.W.
Partner: UNT Libraries Government Documents Department
open access

Summary from working group on noninterceptive diagnostics

Description: The working group for noninterceptive diagnostics spent much of its time comparing diagnostic techniques from different fields and their possible application to high-power injectors. The group included backgrounds from electron beam diagnostics, fusion power diagnostics, cw ion source and transport design, and ion beam of diagnostics. The probability of success for adapting techniques from these different areas is quite difficult to judge, short of a detailed examination of each application. Un… more
Date: January 1, 1985
Creator: Chamberlin, D.D.
Partner: UNT Libraries Government Documents Department
open access

Remote temperature-measurement instrumentation for a heated rotating turbine disk

Description: Thermographic-phosphor (TP) remote temperature sensors were installed on a turbine disk and subjected to thermal and centrifugal stresses in a spin-pit test. The sensors were placed at three different radii on the disk, which was run at 6600, 9330, 11400, and 13200 rpm at nominal temperatures of ambient, 300) degree)F, 600)degree)F, 900)degree)F, and 1250)degree)F (149)degree)C, 316)degree)C, 482)degree)C, and 677)degree)C, respectively). The paper gives details of the TP temperature-measuremen… more
Date: January 1, 1988
Creator: Lutz, S. S.; Turley, W. D.; Borella, H. M.; Noel, B. W.; Cates, M. R. & Probert, M. R.
Partner: UNT Libraries Government Documents Department
open access

Canopy hot-spot as crop identifier

Description: Illuminating any reflective rough or structured surface by a directional light source results in an angular reflectance distribution that shows a narrow peak in the direction of retro-reflection. This is called the Heiligenschein or hot-spot of vegetation canopies and is caused by mutual shading of leaves. The angular intensity distribution of the hot-spot, its brightness and slope, are therefore indicators of the plant's geometry. We propose the use of hot-spot characteristics as crop identifi… more
Date: May 1, 1986
Creator: Gerstl, S. A. W.; Simmer, C. & Powers, B. J.
Partner: UNT Libraries Government Documents Department
open access

The ultrasonic ranging and data system for radiological surveys in the UMTRA (Uranium Mill Tailings Remedial Action) Project

Description: The Ultrasonic Ranging and Data System (USRADS) was developed to allow radiation exposure data and positional information to be collected, stored and analyzed in a more efficient manner than currently employed on the (Uranium Mill Tailings Remedial Action (UMTRA) project. USRADS is a portable unit which employs ultrasonics, radio frequency transmissions, and a personal computer. Operational experience indicates that the system results in increased information about the property with decreased d… more
Date: January 1, 1988
Creator: Little, C. A.; Berven, B. A.; Blair, M. S.; Dickerson, K. S. & Pickering, D. A.
Partner: UNT Libraries Government Documents Department
open access

The angular reflectance signature of the canopy hot spot in the optical regime

Description: When any three-dimensional surface, e.g. a plant canopy is illuminated by a directional light source such as the sun, an angular reflectance distribution results that shows a narrow intensity peak in the direction of retro-reflection. This is called the Heiligenschein or hot spot (HS) of vegetation canopies and is caused by the absence of mutual shading of leaves when the observation direction coincides with the illumination direction. The angular intensity distribution of this hot spot, its br… more
Date: January 1, 1988
Creator: Gerstl, S.A.W.
Partner: UNT Libraries Government Documents Department
open access

Comparison of remotely acquired deep-body and subdermal temperature measurements for detecting fever in cattle

Description: Results of two studies in which deep-body and subdermal temperatures were compared with fevers that were experimentally induced with viruses are given. In the first study, test animals were held indoors where ambient temperatures were stable; in the second study, animals were held outdoors during the winter months when temperatures were highly variable. A computerized temperature telemetry system used for the studies is described for the first time. (PSB)
Date: January 1, 1983
Creator: Seawright, G. L.; Brown, R. R.; Campbell, K.; Levings, R. L. & Araki, C. T.
Partner: UNT Libraries Government Documents Department
open access

Automatic radio telemetry recording of fish temperature and depth

Description: Radio frequency fish transmitters capable of relaying temperature or pressure information and a multichannel recording system were developed and used successfully in the field. Both transmitters operated on pulse rate variation with either temperature or depth. Design considerations for temperature and pressure dependant pulse rates are discussed, including power supply variation, sensitivity ranges, drift, size, power consumption and temperature variation. The receiving-recording system is des… more
Date: January 1, 1979
Creator: Ross, M J; Kuechle, V B; Reichle, R A & Siniff, D B
Partner: UNT Libraries Government Documents Department
open access

Adjacency-blurring-effect of scenes modeled by the radiosity method

Description: In this paper we describe a method to simulate images through a scattering atmosphere. We compute the scattering of light from adjacent surfaces into the field-of-view (FOV) with the extended radiosity method. Our simulation takes aerosol scattering phase functions and ground bidirectional reflectance distributions (BRDF) into account. 10 refs.
Date: January 1, 1992
Creator: Borel, C.C. & Gerstl, S.A.W.
Partner: UNT Libraries Government Documents Department
open access

The application of time-resolved luminescence spectroscopy to a remote uranyl sensor

Description: Time resolved luminescence spectroscopy is an effective method for the determination of a wide range of uranyl concentrations in aqueous samples. We have applied this technique to the development of a remote sensing device using fiber optic cables coupled with a micro flow cell in order to probe for uranyl in aqueous samples. This sensor incorporates a Nafion membrane through which UO{sub 2}{sup 2+} can diffuse in to a reaction/analysis chamber which holds phosphoric acid, a reagent which enhan… more
Date: January 1, 1991
Creator: Varineau, P. T.; Duesing, R. & Wangen, L. E.
Partner: UNT Libraries Government Documents Department
open access

Manipulators in teleoperation

Description: Teleoperated manipulators represent a mature technology which has evolved over nearly 40 years of applications experience. The wide range of manipulator concepts developed thus far reflect differing applications, priorities, and philosophies. The technology of teleoperated manipulators is in a rapid state of change (just as are industrial robotics) fueled by microelectronics and materials advances. Large strides in performance and dexterity are now practical and advantageous. Even though improv… more
Date: January 1, 1985
Creator: Hamel, W.R.
Partner: UNT Libraries Government Documents Department
open access

The U.S. Department of Energy's Aerial Measuring System (AMS)

Description: For nearly 40 years, aerial radiological search and survey missions have been performed by the United States Department of Energy's (USDOE) Remote Sensing Laboratory (RSL). Originally created in 1967 as Aerial Measurement Operations (AMO), the AMS mission has expanded to include acquiring baseline measurements, performing periodic area monitoring, and responding to radiological emergencies. In an accident scenario, AMS fixed-wing and/or rotary-wing systems can be deployed to map radiological de… more
Date: March 1, 2008
Creator: Marianno, Craig
Partner: UNT Libraries Government Documents Department
open access

Fine-scale Horizontal Structure of Arctic Mixed-Phase Clouds.

Description: Recent in situ observations in stratiform clouds suggest that mixed phase regimes, here defined as limited cloud volumes containing both liquid and solid water, are constrained to narrow layers (order 100 m) separating all-liquid and fully glaciated volumes (Hallett and Viddaurre, 2005). The Department of Energy Atmospheric Radiation Measurement Program's (DOE-ARM, Ackerman and Stokes, 2003) North Slope of Alaska (NSA) ARM Climate Research Facility (ACRF) recently started collecting routine mea… more
Date: July 10, 2006
Creator: Rambukkange,M.; Verlinde, J.; Elorante, E.; Luke, E.; Kollias, P. & Shupe, M.
Partner: UNT Libraries Government Documents Department
open access

The Ability of the United States Federal Radiological Monitoring and Assessment Center to Collect and Disseminate Environmental Measurements during Radiological Emergencies

Description: The Federal Radiological Monitoring and Assessment Center (FRMAC) is the United States’ response organization for radiological emergencies. The FRMAC is structured as an operations center and employs the combined resources of several federal agencies to respond to any disaster resulting in the release of radioactivity. The mission of the FRMAC is to support state and local authorities in the gathering of environmental data using an array of survey equipment ranging from alpha probes, beta/gamma… more
Date: April 30, 2007
Creator: Essex, Craig Marianno and James
Partner: UNT Libraries Government Documents Department
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