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42 Matching Results
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The Clifton Record (Clifton, Tex.), Vol. 104, No. 5, Ed. 1 Friday, January 15, 1999
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
January 15, 1999
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 104, No. 100, Ed. 1 Wednesday, December 15, 1999
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
December 15, 1999
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
Comparing geophysical measurements to theoretical estimates for soil mixtures at low pressures
The authors obtained good estimates of measured velocities of sand-peat samples at low pressures by using a theoretical method, the self-consistent theory of Berryman (1980), using sand and porous peat to represent the microstructure of the mixture. They were unable to obtain useful estimates with several other theoretical approaches, because the properties of the quartz, air and peat components of the samples vary over several orders of magnitude. Methods that are useful for consolidated rock cannot be applied directly to unconsolidated materials. Instead, careful consideration of microstructure is necessary to adapt the methods successfully. Future work includes comparison of the measured velocity values to additional theoretical estimates, investigation of Vp/Vs ratios and wave amplitudes, as well as modeling of dry and saturated sand-clay mixtures (e.g., Bonner et al., 1997, 1998). The results suggest that field data can be interpreted by comparing laboratory measurements of soil velocities to theoretical estimates of velocities in order to establish a systematic method for predicting velocities for a full range of sand-organic material mixtures at various pressures. Once the theoretical relationship is obtained, it can be used to estimate the soil composition at various depths from field measurements of seismic velocities. Additional refining of the …
Date:
January 15, 1999
Creator:
Wildenschild, D.; Berge, P. A.; Berryman, K. G.; Bonner, B. P. & Roberts, J. J.
Object Type:
Article
System:
The UNT Digital Library
Proceedings of the 1999 Particle Accelerator Conference
The conference has covered new developments in all aspects of the science, technology and use of accelerators. All individuals with an interest in particle accelerators were invited to attend.
Date:
June 15, 1999
Creator:
Luccio, A. & MacKay, W.
Object Type:
Article
System:
The UNT Digital Library
Texas Jewish Post (Fort Worth, Tex.), Vol. 53, No. 28, Ed. 1 Thursday, July 15, 1999
Weekly Jewish newspaper from Fort Worth, Texas that includes local, state, and national news along with extensive advertising.
Date:
July 15, 1999
Creator:
Wisch, J. A. & Wisch, Rene
Object Type:
Newspaper
System:
The Portal to Texas History
Ultrasonic Velocities in Unconsolidated Sand/Clay Mixtures at Low Pressures
Effective seismic interrogation of the near subsurface requires that measured parameters, such as compressional and shear velocities and attenuation, be related to important soil properties. Porosity, composition (clay content), fluid content and type are of particular interest. The ultrasonic (100-500 kHz) pulse transmission technique was used to collect data for highly attenuating materials appropriate to the vadose zone. Up to several meters of overburden were simulated by applying low uniaxial stress of 0 to about 0.1 MPa to the sample. The approach was to make baseline measurements for pure quartz sand, because the elastic properties are relatively well known except at the lowest pressures. Clay was added to modify the sample microstructure and ultrasonic measurements were made to characterize the effect of the admixed second phase. Samples were fabricated from Ottawa sand mixed with a swelling clay (Wyoming bentonite). The amount of clay added was 1 to 40% by mass. Compressional (P) velocities are low (228-483 m/s), comparable to the sound velocity in air. Shear (S) velocities are about half of the compressional velocity (120-298 m/s), but show different sensitivity to microstructure. Adding clay increases the shear amplitude dramatically with respect to P, and also changes the sensitivity of the …
Date:
October 15, 1999
Creator:
Aracne-Ruddle, C. M.; Bonner, B. P.; Trombino, C. N.; Hardy, E. D.; Berge, P. A.; Boro, C. O. et al.
Object Type:
Article
System:
The UNT Digital Library
The Tulia Herald (Tulia, Tex.), Vol. 90, No. 15, Ed. 1 Thursday, April 15, 1999
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
April 15, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Sanger Courier (Sanger, Tex.), Vol. 100, No. 25, Ed. 1 Thursday, April 15, 1999
Weekly newspaper from Sanger, Texas that includes local, state, and national news along with extensive advertising.
Date:
April 15, 1999
Creator:
Hardy, Lisa
Object Type:
Newspaper
System:
The Portal to Texas History
The Tulia Herald (Tulia, Tex.), Vol. 91, No. 28, Ed. 1 Thursday, July 15, 1999
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
July 15, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Optimist (Abilene, Tex.), Vol. 88, No. 8, Ed. 1, Wednesday, September 15, 1999
Tri-weekly student newspaper from Abilene Christian University in Abilene, Texas that includes local, state and campus news along with advertising.
Date:
September 15, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Wynnewood Gazette (Wynnewood, Okla.), Vol. 97, No. 15, Ed. 1 Thursday, July 15, 1999
Weekly newspaper from Wynnewood, Oklahoma that includes local, state, and national news along with advertising.
Date:
July 15, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Optimist (Abilene, Tex.), Vol. 88, No. 16, Ed. 1, Friday, October 15, 1999
Tri-weekly student newspaper from Abilene Christian University in Abilene, Texas that includes local, state and campus news along with advertising.
Date:
October 15, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Albany News (Albany, Tex.), Vol. 124, No. 5, Ed. 1 Thursday, July 15, 1999
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
July 15, 1999
Creator:
Lucas, Donnie A.
Object Type:
Newspaper
System:
The Portal to Texas History
The West News (West, Tex.), Vol. 109, No. 15, Ed. 1 Thursday, April 15, 1999
Weekly newspaper from West, Texas that includes local, state, and national news along with advertising.
Date:
April 15, 1999
Creator:
Knapek, Larry
Object Type:
Newspaper
System:
The Portal to Texas History
Sanger Courier (Sanger, Tex.), Vol. 100, No. 38, Ed. 1 Thursday, July 15, 1999
Weekly newspaper from Sanger, Texas that includes local, state, and national news along with extensive advertising.
Date:
July 15, 1999
Creator:
Hardy, Lisa
Object Type:
Newspaper
System:
The Portal to Texas History
Mannford Eagle (Mannford, Okla.), Vol. 18, No. 42, Ed. 1 Wednesday, December 15, 1999
Weekly newspaper from Mannford, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 15, 1999
Creator:
Retherford, Bill R.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 84, No. 208, Ed. 1 Saturday, May 15, 1999
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 15, 1999
Creator:
Horn, Richard A.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Express-Star (Chickasha, Okla.), Ed. 1 Monday, March 15, 1999
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 15, 1999
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Wynnewood Gazette (Wynnewood, Okla.), Vol. 97, No. 2, Ed. 1 Thursday, April 15, 1999
Weekly newspaper from Wynnewood, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 15, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Perry Daily Journal (Perry, Okla.), Vol. 106, No. 116, Ed. 1 Tuesday, June 15, 1999
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 15, 1999
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Express-Star (Chickasha, Okla.), Ed. 1 Tuesday, June 15, 1999
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 15, 1999
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Polk County Enterprise (Livingston, Tex.), Vol. 117, No. 65, Ed. 1 Sunday, August 15, 1999
Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date:
August 15, 1999
Creator:
White, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Altus Times (Altus, Okla.), Vol. 100, No. 1, Ed. 1 Monday, March 15, 1999
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 15, 1999
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Improved Efficiency of Miscible CO2 Floods and Enhanced Prospects for CO2 Flooding Heterogeneous Reservoirs
The goal of this project is to improve the efficiency of miscible CO2 floods and enhance the prospects for flooding heterogeneous reservoirs. This report provides results of the second year of the three-year project that will be exploring three principles: (1) Fluid and matrix interactions (understanding the problems). (2) Conformance control/sweep efficiency (solving the problems. 3) Reservoir simulation for improved oil recovery (predicting results).
Date:
October 15, 1999
Creator:
Grigg, Reid B. & Schechter, David S.
Object Type:
Report
System:
The UNT Digital Library