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Influence of access hole parameters on neutron moisture probe readings

Description: Computing soil moisture content with a neutron probe requires use of a calibration curve that considers the thermal neutron capture cross section of the hole liner as well as the hole diameter. The influence of steel, polyvinyl chloride, and aluminum casings that fit 0.051 to 0.102-hole diameters was determined by comparison with neutron probe readings in uncased holes of corresponding diameters. Eccentricity of probe location was considered a potentially significant variable. The relationship … more
Date: April 1978
Creator: Abeele, Willy V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measurements of matric and water potentials in unsaturated tuff at Yucca Mountain, Nevada

Description: Two types of instruments were installed in a borehole in order to monitor matric and water potentials of various hydrogeologic units consisting of tuff. The borehole was drilled as part of a study to provide information to the US Department of Energy for their use in evaluating Yucca Mountain, Nevada, for a repository for high-level radioactive waste. Heat-dissipation probes were used to monitor matric potentials and thermocouple psychrometers were used to monitor water potentials. Two major co… more
Date: December 31, 1985
Creator: Thamir, F. & McBride, C. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Field evidence for strong chemical separation of contaminants in the Hanford Vadose Zone

Description: Water and chemical transport from a point source withinvadose zone sediments at Hanford were examined with a leak testconsisting of five 3800-liter aliquots of water released at 4.5 m depthevery week over a 4-week period. The third aliquot contained bromide, D2Oand 87Sr. Movement of the tracers was monitored for 9 months by measuringpore water compositions of samples from boreholes drilled 2-8 m from theinjection point. Graded sedimentary layers acting as natural capillarybarriers caused signif… more
Date: April 10, 2007
Creator: Conrad, Mark E.; DePaolo, Donald J.; Maher, Katharine; Gee,Glendon W. & Ward, Anderson L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Precipitation and soil impacts on partitioning of subsurface moisture in Avena barbata: Observations from a greenhouse experiment

Description: The primary objective of this study was to assess the impact of two grassland soils and precipitation regimes on soil-moisture dynamics. We set up an experiment in a greenhouse, and monitored soil moisture dynamics in mesocosms planted with Avena barbata, an annual species found in California grasslands. By repeating the precipitation input at regular intervals, we were able to observe plant manipulation of soil moisture during well-defined periods during the growing season. We found that the a… more
Date: March 1, 2011
Creator: Salve, R. & Torn, M.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Entropy-Bayesian Inversion of Time-Lapse Tomographic GPR data for Monitoring Dielectric Permittivity and Soil Moisture Variations

Description: In this study, we evaluate the possibility of monitoring soil moisture variation using tomographic ground penetrating radar travel time data through Bayesian inversion, which is integrated with entropy memory function and pilot point concepts, as well as efficient sampling approaches. It is critical to accurately estimate soil moisture content and variations in vadose zone studies. Many studies have illustrated the promise and value of GPR tomographic data for estimating soil moisture and assoc… more
Date: February 22, 2013
Creator: Hou, Zhangshuan; Terry, Neil C. & Hubbard, Susan S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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STAINLESS STEEL INTERACTIONS WITH SALT CONTAINING PLUTONIUM OXIDES

Description: Salt containing plutonium oxide materials are treated, packaged and stored within nested, stainless steel containers based on requirements established in the DOE 3013 Standard. The moisture limit for the stored materials is less than 0.5 weight %. Surveillance activities which are conducted to assess the condition of the containers and assure continuing 3013 container integrity include the destructive examination of a select number of containers to determine whether corrosion attack has occurre… more
Date: February 1, 2010
Creator: Nelson, Z.; Chandler, G.; Dunn, K.; Stefek, T. & Summer, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A Simplified Methodology for Estimating the Pressure Buildup and Hydrogen Concentration Within a 2R/6M Container

Description: A simplified and bounding methodology for analyzing the pressure buildup and hydrogen concentration within an unvented 2R container was developed (the 2R is a sealed container within a 6M package). The specific case studied was the gas buildup due to alpha radiolysis of water moisture sorbed on small quantities (less than 20 Ci per package) of plutonium oxide. Analytical solutions for gas pressure buildup and hydrogen concentration within the unvented 2R container were developed. Key results in… more
Date: August 1, 2001
Creator: Sanchez, Lawrence C.; Ottinger, Cathy A. & Polansky, Gary F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Catalog of Geologic Data for the Hanford Site

Description: This is the first update of the catalog that was published in 2001. This report catalogs the existing geologic data that can be found in various databases, published and unpublished reports, and in individuals' technical files. The scope of this catalog is primarily on the 100, 200, and 300 Areas, with a particular emphasis on the 200 Areas. Over 2,922 wells are included in the catalog. Nearly all of these wells (2,459) have some form of driller's or geologist's log. Archived samples are availa… more
Date: September 30, 2002
Creator: Horton, Duane G.; Last, George V.; Gilmore, Tyler J. & Bjornstad, Bruce N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Air Leakage of U.S. Homes: Model Prediction

Description: Air tightness is an important property of building envelopes. It is a key factor in determining infiltration and related wall-performance properties such as indoor air quality, maintainability and moisture balance. Air leakage in U.S. houses consumes roughly 1/3 of the HVAC energy but provides most of the ventilation used to control IAQ. The Lawrence Berkeley National Laboratory has been gathering residential air leakage data from many sources and now has a database of more than 100,000 raw mea… more
Date: January 1, 2007
Creator: Sherman, Max H. & McWilliams, Jennifer A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Tropical Warm Pool International Cloud Experiment TWP-ICE Cloud and rain characteristics in the Australian Monsoon

Description: The impact of oceanic convection on its environment and the relationship between the characteristics of the convection and the resulting cirrus characteristics is still not understood. An intense airborne measurement campaign combined with an extensive network of ground-based observations is being planned for the region near Darwin, Northern Australia, during January-February, 2006, to address these questions. The Tropical Warm Pool International Cloud Experiment (TWP-ICE) will be the first fie… more
Date: May 31, 2004
Creator: May, P.T., Jakob, C., and Mather, J.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Buckingham (1907): An appreciation

Description: Nearly a century ago, Edgar Buckingham (1907) published a seminal work on the movement of soil moisture which is part of the foundation of modern soil physics. It also constitutes a pioneering contribution in the study of multi-phase flow in porous media. A physicist, Buckingham took on an earth science issue of importance to society, and produced superb basic science as a byproduct. Buckingham impresses us with his ability to combine experiment and theory, and his capacity to intuitively expla… more
Date: November 17, 2004
Creator: Narasimhan, T. N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Method and Apparatus for Monitoring the Integrity of a Geomembrane Liner using time Domain Reflectometry

Description: Leaks are detected in a multi-layered geomembrane liner by a two-dimensional time domain reflectometry (TDR) technique. The TDR geomembrane liner is constructed with an electrically conductive detection layer positioned between two electrically non-conductive dielectric layers, which are each positioned between the detection layer and an electrically conductive reference layer. The integrity of the TDR geomembrane liner is determined by generating electrical pulses within the detection layer an… more
Date: November 9, 1998
Creator: Morris, John L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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Computation of Soil Moisture at Brookhaven National Laboratory

Description: The high incidence of drought conditions in recent years has caused considerable concern among agriculturalists in eastern Long Island. A convenient method of computing soil moisture on a daily basis has therefore been sought in order to provide a quantitative estimate of present and past conditions.
Date: unknown
Creator: Brown, Robert, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Hydrogeology of the unsaturated zone, Yucca Mountain, Nevada

Description: The unsaturated volcanic tuff beneath Yucca Mountain, Nevada, is being evaluated by the US Department of Energy as a host rock for a potential mined geologic repository for high-level radioactive waste. Assessment of site suitability needs an efficient and focused investigative program. A conceptual hydrogeologic model that simulates the flow of fluids through the unsaturated zone at Yucca Mountain was developed to guide the program and to provide a basis for preliminary assessment of site suit… more
Date: December 31, 1985
Creator: Montazer, P. & Wilson, W. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Potential tank waste material anomalies located near the liquid observation wells: Model predicted responses of a neutron moisture detection system

Description: Extensive analyses have been completed to demonstrate that a neutron moisture probe can be used to recognize anomalies in materials and geometry surrounding the liquid observation wells (LOWs). Furthermore, techniques can be developed that will permit the interpretation of detector readings, perturbed by the presence of anomalies, as more accurate moisture concentrations. This analysis effort extends the usefulness of a neutron moisture probe system significantly, especially in the complicated … more
Date: September 1, 1994
Creator: Finfrock, S. H.; Toffer, H. & Watson, W. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Use of microphysical relationships to discern growth/decay mechanisms of cloud droplets with focus on Z-LWC relationships.

Description: Cloud droplet size distributions hence the key microphysical quantities (e.g., radar reflectivity, droplet concentration, liquid water content, relative dispersion, and mean-volume radius) are determined by different physical mechanisms, including pre-cloud aerosols as CCNs, cloud updraft, and various turbulent entrainment-mixing processes. Therefore, different relationships among these microphysical properties are expected in response to these various mechanisms. The effect of turbulent entrai… more
Date: May 1, 2008
Creator: Liu, Y.; Daum, P. H.; Yum, S. S. & Wang, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The effect of unheated sections on moisture transport in theemplacement drift

Description: A thermal-hydrologic-natural-ventilation model is configuredfor simulating temperature, humidity, and condensate distributions in thecoupled domains of the in-drift airspace and the near-field rockmass.Meaningful results are obtained from the model for a practicalapplication in which the beneficial effects of unheated drift sectionsare analyzed. Sensitivity to the axial dispersion coefficient is alsostudied with the model.
Date: September 1, 2005
Creator: Danko, G.; Birkholzer, J. & Barahmi, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Testing of FMI's Coal Upgrading Process

Description: WRI and FMI have collaborated to develop and test a novel coal upgrading technology. Proprietary coal upgrading technology is a fluidized bed-based continuous process which allows high through-puts, reducing the coal processing costs. Processing is carried out under controlled oxidizing conditions at mild enough conditions that compared to other coal upgrading technologies; the produced water is not as difficult to treat. All the energy required for coal drying and upgrading is derived from the… more
Date: March 21, 2009
Creator: Sethi, Vijay
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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INNOVATIVE INSTRUMENTATION AND ANALYSIS OF THE TEMPERATURE MEASUREMENT FOR HIGH TEMPERATURE GASIFICATION

Description: The systematic tests of the gasifier simulator were conducted in this reporting period. In the systematic test, two (2) factors were considered as the experimental parameters, including air injection rate and water injection rate. Each experimental factor had two (2) levels, respectively. A special water-feeding device was designed and installed to the gasifier simulator. Analysis of Variances (ANOVA) was applied to the results of the systematic tests. The ANOVA shows that the air injection rat… more
Date: April 1, 2004
Creator: Lee, Seong W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Effects of Moisture on LiD Single Crystals Studied by Temperature Programmed Reaction

Description: Temperature programmed reaction (TPR) technique was performed on LiOH powders and LiD single crystals previously exposed to different moisture levels. Our results show that the LiOH decomposition process has an activation energy barrier of 30 to 33.1 kcal/mol. The LiOH structure is stable even if kept at 320 K for 100 years. However, LiOH structures formed on the surface of LiD during moisture exposure at low dosages may have multiple activation energy barriers, some of which may be much lower … more
Date: September 14, 2000
Creator: Dinh, L.; Balooch, M.; Cecala, C. M. & Leckey, J. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Subsurface Flow and Contaminant Transport Documentation and User's Guide

Description: This report documents a finite element code designed to model subsurface flow and contaminant transport, named FACT. FACT is a transient three-dimensional, finite element code designed to simulate isothermal groundwater flow, moisture movement, and solute transport in variably saturated and fully saturated subsurface porous media. The code is designed specifically to handle complex multi-layer and/or heterogeneous aquifer systems in an efficient manner and accommodates a wide range of boundary … more
Date: July 28, 1999
Creator: Aleman, S. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Acceptance and Operational Test Report for Neutron and Gamma Probe Application to Tank 241-SY-101 MITs

Description: This Operational Test Report (OTR) presents the results of the ATP/OTP testing performed to verify that newly procured neutron and gamma probes (reduced diameter design modifications) for operation in the Tank 241-SY-101 MITs are compatible with existing LOW van instrumentation and hardware. This verification was accomplished and a set of moisture data versus elevation were obtained from the Tank 241-SY-101 MITs as part of this testing program.
Date: August 12, 1999
Creator: CANNON, N.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Humidity Dependence of Adhesion for Silane Coated Microcantilevers

Description: This study examines adhesion between silane-coated micromachined surfaces that are exposed to humid conditions. Our quantitative values for interfacial adhesion energies are determined from an in-situ optical measurement of deformations in partly-adhered cantilever beams. We coated micromachined cantilevers with either ODTS (C{sub 18}H{sub 37}SiCl{sub 3}) or FDTS (C{sub 8}F{sub 17}C{sub 2}H{sub 4}SiCl{sub 3}) with the objective of creating hydrophobic surfaces whose adhesion would be independen… more
Date: November 9, 1999
Creator: DE BOER,MAARTEN P.; MAYER,THOMAS M.; CARPICK,ROBERT W.; MICHALSKE,TERRY A.; SRINIVASAN,U. & MABOUDIAN,R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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