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Correspondence of the Gardner and van Genuchten/Mualem relativepermeability function parameters
The Gardner and van Genuchten models of relativepermeability are widely used in analytical and numerical solutions toflow problems. However, the applicab ility of the Gardner model to realproblems is usually limited, because empirical relative permeability datato calibrate the model are not routinely available. In contrast, vanGenuchten parameters can be estimated using more routinely availablematric potential and saturation data. However, the van Genuchten model isnot amenable to analytical solutions. In this paper, we introducegeneralized conversion formulae that reconcile these two models. Ingeneral, we find that the Gardner parameter alpha G is related to the vanGenuchten parameters alpha vG and n by alpha G=alpha vG ~; 1:3 n. Thisconversion rule will allow direct recasting of Gardner-based analyticalsolutions in the van Genuchten parameter space. The validity of theproposed formulae was tested by comparing the predicted relativepermeability of various porous media with measured values.
Date:
January 3, 2007
Creator:
Ghezzehei, Teamrat A.; Kneafsey, Timothy J. & Su, Grace W.
Object Type:
Article
System:
The UNT Digital Library
Recess Appointments Made by President George W. Bush, January 20, 2001- October 31, 2008
This report identifies recess appointments made by President George W. Bush from the time he took office on January 20, 2001, through October 31, 2008. Basic descriptive statistics regarding these appointments are also provided.
Date:
November 3, 2008
Creator:
Hogue, Henry B. & Bearden, Maureen
Object Type:
Report
System:
The UNT Digital Library
THE SNS RING DIPOLE MAGNETIC FIELD QUALITY.
The large acceptance and compact size of the Spallation Neutron Source (SNS) ring implies the use of short, large aperture dipole magnets, with significant end field errors. The SNS will contain 32 such dipoles. We report magnetic field measurements of the first 16 magnets. The end field errors have been successfully compensated by the use of iron bumps. For 1.0 GeV protons, the magnets have been shimmed to meet the 0.01% specification for rms variation of the integral field. At 1.3 GeV, the rms variation is 0.036%. The load on the corrector system at 1.3 GeV will be reduced by the use of sorting.
Date:
June 3, 2002
Creator:
Wanderer, P.; Jackson, J.; Jain, A.; Lee, Y. Y.; Meng, W.; Papaphilippou, I. et al.
Object Type:
Article
System:
The UNT Digital Library
The Clifton Record (Clifton, Tex.), Vol. 112, No. 40, Ed. 1 Wednesday, October 3, 2007
Weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
October 3, 2007
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 109, No. 58, Ed. 1 Friday, December 3, 2004
Weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
December 3, 2004
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 109, No. 18, Ed. 1 Wednesday, March 3, 2004
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
March 3, 2004
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 107, No. 36, Ed. 1 Friday, May 3, 2002
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
May 3, 2002
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 111, No. 9, Ed. 1 Friday, March 3, 2006
Weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
March 3, 2006
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 110, No. 22, Ed. 1 Friday, June 3, 2005
Weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
June 3, 2005
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 105, No. 35, Ed. 1 Wednesday, May 3, 2000
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
May 3, 2000
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
The Goldthwaite Eagle (Goldthwaite, Tex.), Vol. 112, No. 25, Ed. 1 Wednesday, January 3, 2007
Weekly newspaper from Goldthwaite, Texas that includes local, state, and national news along with extensive advertising.
Date:
January 3, 2007
Creator:
Bridges, Steven W.
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 108, No. 80, Ed. 1 Friday, October 3, 2003
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
October 3, 2003
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
Ground truth measurements plan for the Multispectral Thermal Imager (MTI) satellite
Sandia National Laboratories (SNL), Los Alamos National Laboratory (LANL), and the Savannah River Technology Center (SRTC) have developed a diverse group of algorithms for processing and analyzing the data that will be collected by the Multispectral Thermal Imager (MTI) after launch late in 1999. Each of these algorithms must be verified by comparison to independent surface and atmospheric measurements. SRTC has selected 13 sites in the continental U.S. for ground truth data collections. These sites include a high altitude cold water target (Crater Lake), cooling lakes and towers in the warm, humid southeastern US, Department of Energy (DOE) climate research sites, the NASA Stennis satellite Validation and Verification (V and V) target array, waste sites at the Savannah River Site, mining sites in the Four Corners area and dry lake beds in the southwestern US. SRTC has established mutually beneficial relationships with the organizations that manage these sites to make use of their operating and research data and to install additional instrumentation needed for MTI algorithm V and V.
Date:
January 3, 2000
Creator:
Garrett, A.J.
Object Type:
Report
System:
The UNT Digital Library
The Clifton Record (Clifton, Tex.), Vol. 109, No. 45, Ed. 1 Friday, September 3, 2004
Weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
September 3, 2004
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 87, No. 96, Ed. 1 Thursday, January 3, 2002
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 3, 2002
Creator:
Quinnelly, Lorrie J.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Oklahoma Daily (Norman, Okla.), Vol. 91, No. 127, Ed. 1 Tuesday, April 3, 2007
Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.
Date:
April 3, 2007
Creator:
Savage, William W., III
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
South Texas Catholic (Corpus Christi, Tex.), Vol. 44, No. 7, Ed. 1 Friday, April 3, 2009
Semi-monthly newspaper from Corpus Christi, Texas published by the Diocese of Corpus Christi that includes news of interest to Diocese members along with advertising.
Date:
April 3, 2009
Creator:
Beaton, Paula J.
Object Type:
Newspaper
System:
The Portal to Texas History
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 85, No. 353, Ed. 1 Friday, November 3, 2000
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 3, 2000
Creator:
Quinnelly, Lorrie J.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 86, No. 224, Ed. 1 Sunday, June 3, 2001
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 3, 2001
Creator:
Quinnelly, Lorrie J.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Oklahoma Daily (Norman, Okla.), Vol. 91, No. 149, Ed. 1 Thursday, May 3, 2007
Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.
Date:
May 3, 2007
Creator:
Savage, William W., III
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Evolution of Early-type Field Galaxies Selected from a NICMOS Map of the Hubble Deep Field North
The redshift distribution of well-defined samples of distant early-type galaxies offers a means to test the predictions of monolithic and hierarchical galaxy formation scenarios. NICMOS maps of the entire Hubble Deep Field North in the F110W and F160W filters, when combined with the available WFPC2 data, allow us to calculate photometric redshifts and determine the morphological appearance of galaxies at rest-frame optical wavelengths out to z {approx} 2.5. Here we report results for two subsamples of early-type galaxies, defined primarily by their morphologies in the F160W band, which were selected from the NICMOS data down to H{sub 160AB} < 24.0. A primary subsample is defined as the 34 galaxies with early-type galaxy morphologies and early-type galaxy spectral energy distributions. The secondary subsample is defined as those 42 objects which have early-type galaxy morphologies with non-early type galaxy spectral energy distributions. The observed redshift distributions of our two early-type samples do not match that predicted by a monolithic collapse model, which shows an overabundance at z > 1.5. A (V/V{sub max}) test confirms this result. When the effects of passive luminosity evolution are included in the calculation, the mean value of Vmax for the primary sample is 0.22 {+-} 0.05, and …
Date:
March 3, 2004
Creator:
Somerville, R,; Stanford, S. A.; Budavari, T. & Conselice, C. J.
Object Type:
Article
System:
The UNT Digital Library
Hanford Tank 241-C-106: Residual Waste Contaminant Release Model and Supporting Data
CH2M HILL is producing risk/performance assessments to support the closure of single-shell tanks at the DOE's Hanford Site. As part of this effort, staff at PNNL were asked to develop release models for contaminants of concern that are present in residual sludge remaining in tank 241-C-106 (C-106) after final retrieval of waste from the tank. This report provides the information developed by PNNL.
Date:
June 3, 2005
Creator:
Deutsch, William J.; Krupka, Kenneth M.; Lindberg, Michael J.; Cantrell, Kirk J.; Brown, Christopher F. & Schaef, Herbert T.
Object Type:
Report
System:
The UNT Digital Library
A review of in-situ chemical oxidation and heterogeneity
None
Date:
February 3, 2003
Creator:
Seol, Yongkoo; Zhang, Hubao & Schwartz, Frank W.
Object Type:
Article
System:
The UNT Digital Library
Impact of drought on U.S. steam electric power plant cooling water intakes and related water resource management issues.
This report was funded by the U.S. Department of Energy's (DOE's) National Energy Technology Laboratory (NETL) Existing Plants Research Program, which has an energy-water research effort that focuses on water use at power plants. This study complements their overall research effort by evaluating water availability at power plants under drought conditions. While there are a number of competing demands on water uses, particularly during drought conditions, this report focuses solely on impacts to the U.S. steam electric power plant fleet. Included are both fossil-fuel and nuclear power plants. One plant examined also uses biomass as a fuel. The purpose of this project is to estimate the impact on generation capacity of a drop in water level at U.S. steam electric power plants due to climatic or other conditions. While, as indicated above, the temperature of the water can impact decisions to halt or curtail power plant operations, this report specifically examines impacts as a result of a drop in water levels below power plant submerged cooling water intakes. Impacts due to the combined effects of excessive temperatures of the returned cooling water and elevated temperatures of receiving waters (due to high ambient temperatures associated with drought) may be examined in …
Date:
April 3, 2009
Creator:
Kimmell, T. A.; Veil, J. A. & Division, Environmental Science
Object Type:
Report
System:
The UNT Digital Library