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7,344 Matching Results

Start Over Month July Day 20th

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Results: 1 - 24 of 7,344 next
Best Match Title Creator Date Created (Newest) Date Created (Oldest) Date Added (Newest) Date Added (Oldest)
Chemometric Analysis of Nuclear Magnetic Resonance Spectroscopy Data (open access)

Chemometric Analysis of Nuclear Magnetic Resonance Spectroscopy Data

Chemometric analysis of nuclear magnetic resonance (NMR) spectroscopy has increased dramatically in recent years. A variety of different chemometric techniques have been applied to a wide range of problems in food, agricultural, medical, process and industrial systems. This article gives a brief review of chemometric analysis of NMR spectral data, including a summary of the types of mixtures and experiments analyzed with chemometric techniques. Common experimental problems encountered during the chemometric analysis of NMR data are also discussed.
Date: July 20, 2000
Creator: ALAM,TODD M. & ALAM,M. KATHLEEN
Object Type: Article
System: The UNT Digital Library
Land-Based Geologic Emplacement of Mercury Wastes (open access)

Land-Based Geologic Emplacement of Mercury Wastes

None
Date: July 20, 2000
Creator: ANDERSON,D. RICHARD
Object Type: Article
System: The UNT Digital Library
Conductivities and Seebeck Coefficients of Boron Carbides: ''Softening-Bipolaron'' Hopping (open access)

Conductivities and Seebeck Coefficients of Boron Carbides: ''Softening-Bipolaron'' Hopping

The most conspicuous feature of boron carbides' electronic transport properties is their having both high carrier densities and large Seebeck coefficients. The magnitudes and temperature dependencies of the Seebeck coefficients are consistent with large contributions from softening bipolarons: singlet bipolarons whose stabilization is significantly affected by their softening of local vibrations. Boron carbides' high carrier densities, small activation energies for hopping ({approx} 0.16 eV), and anomalously large Seebeck coefficients combine with their low, glass-like thermal conductivities to make them unexpectedly efficient high-temperature thermoelectrics.
Date: July 20, 2000
Creator: ASELAGE,TERRENCE L.; EMIN,DAVID JACOB & MCCREADY,STEVEN S.
Object Type: Article
System: The UNT Digital Library
New Measurement of A{sub b} at the Z{sup 0} Resonance Using a Vertex Charge Technique (open access)

New Measurement of A{sub b} at the Z{sup 0} Resonance Using a Vertex Charge Technique

We present a new preliminary measurement of the parity-violation parameter A{sub b} using a self-calibrating vertex-charge technique. In the SLD experiment we observe hadronic decays of Z{sup 0} bosons produced in collisions between longitudinally polarized electrons and unpolarized positrons at the SLAC Linear Collider. A sample of b{bar b} events is selected using the topologically reconstructed mass of B hadrons. From our 1996-1998 data sample of approximately 400,000 hadronic Z{sup 0} decays, we obtain A{sub b} = 0.897 {+-} 0.027(stat){sub -0.034}{sup +0.036}(syst).
Date: July 20, 1999
Creator: Abe, K
Object Type: Report
System: The UNT Digital Library
Model for the prediction of the pressure-volume relationship of porous rocks (open access)

Model for the prediction of the pressure-volume relationship of porous rocks

Several models have been suggested to describe the volume behavior of porous materials under hydrostatic loading. The model presented here accounts for variations in both porosity and the amount of fluid contained within that porosity. The model also attempts to predict the one-dimensional strain loading pressure-volume relationship and the stress difference-confining pressure curve. Only the simplest assumptions were used for the development of this model. These assumptions are discussed and the predictions for Mt. Helen tuff are compared to experimental data.
Date: July 20, 1976
Creator: Abey, A. E.
Object Type: Article
System: The UNT Digital Library
Catalog of Abilene Christian College, 1948-1949 (open access)

Catalog of Abilene Christian College, 1948-1949

Catalog describes the governance, history, course offerings, and campus life of Abilene Christian College in Abilene, Texas.
Date: July 20, 1948
Creator: Abilene Christian College
Object Type: Book
System: The Portal to Texas History
Oral History Interview with Lena Coleman-Wilson, July 20, 2016 captions transcript

Oral History Interview with Lena Coleman-Wilson, July 20, 2016

Ms. Coleman-Wilson discussed growing up during desegregation and her role as president of the Hi-Alco neighborhood association.
Date: July 20, 2016
Creator: Acuña-Gurrola, Moisés & Coleman-Wilson, Lena
Object Type: Video
System: The Portal to Texas History
Oral History Interview with Verna Portis, June 14, 2016 captions transcript

Oral History Interview with Verna Portis, June 14, 2016

Ms. Portis discussed growing up in segregated East Texas, attending Prairie View A&M, and her career as a Corpus Christi educator .
Date: July 20, 2016
Creator: Acuña-Gurrola, Moisés; Wall, James & Portis, Verna
Object Type: Video
System: The Portal to Texas History
The Forgan Advocate (Forgan, Okla.), Vol. 6, No. 40, Ed. 1 Thursday, July 20, 1933 (open access)

The Forgan Advocate (Forgan, Okla.), Vol. 6, No. 40, Ed. 1 Thursday, July 20, 1933

Weekly newspaper from Forgan, Oklahoma that includes local, state, and national news along with advertising.
Date: July 20, 1933
Creator: Adams, Aline
Object Type: Newspaper
System: The Gateway to Oklahoma History
Pawhuska Daily Journal-Capital (Pawhuska, Okla.), Vol. 73, No. 142, Ed. 1 Tuesday, July 20, 1982 (open access)

Pawhuska Daily Journal-Capital (Pawhuska, Okla.), Vol. 73, No. 142, Ed. 1 Tuesday, July 20, 1982

Daily newspaper from Pawhuska, Oklahoma that includes local, state, and national news along with advertising.
Date: July 20, 1982
Creator: Adams, Bill
Object Type: Newspaper
System: The Gateway to Oklahoma History
Oral History Interview with Marjorie Adams, July 20, 2016 captions transcript

Oral History Interview with Marjorie Adams, July 20, 2016

Described her family's acquisition of land from former slaveowners, discrimination and segregation, political activism, and community work.
Date: July 20, 2016
Creator: Adams, Marjorie & Grevious, Danielle
Object Type: Video
System: The Portal to Texas History
The Paducah Post (Paducah, Tex.), Vol. 82, No. 22, Ed. 1 Wednesday, July 20, 1988 (open access)

The Paducah Post (Paducah, Tex.), Vol. 82, No. 22, Ed. 1 Wednesday, July 20, 1988

Weekly newspaper from Paducah, Texas that includes local, state, and national news along with advertising.
Date: July 20, 1988
Creator: Adams, Patty
Object Type: Newspaper
System: The Portal to Texas History
Convair Report to Supervision, Number 1006, July 20, 1977 (open access)

Convair Report to Supervision, Number 1006, July 20, 1977

Newsletter written for supervisors working at the Convair Division in Fort Worth containing news about events and activities, workplace reminders, and other relevant information.
Date: July 20, 1977
Creator: Adams, Richard E.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Solar still. Final report (open access)

Solar still. Final report

Passive solar heating was used in a still in which a packed column packed with popped popcorn separates the alcohol and water vapors. The still's performance was not satisfactory, and it is concluded that passive solar heating could have been better used to preheat makeup water for the fermentation process and to maintain proper fermentation temperatures during the winter. (LEW)
Date: July 20, 1983
Creator: Adams, W.D.
Object Type: Report
System: The UNT Digital Library
Forney Tribune. (Forney, Tex.), Vol. 4, No. 6, Ed. 1 Wednesday, July 20, 1892 (open access)

Forney Tribune. (Forney, Tex.), Vol. 4, No. 6, Ed. 1 Wednesday, July 20, 1892

Weekly newspaper from Forney, Texas that includes local, state, and national news along with advertising.
Date: July 20, 1892
Creator: Adams, Walter D.
Object Type: Newspaper
System: The Portal to Texas History
The Edmond Enterprise (Edmond, Okla.), Vol. 22, No. 25, Ed. 1 Thursday, July 20, 1922 (open access)

The Edmond Enterprise (Edmond, Okla.), Vol. 22, No. 25, Ed. 1 Thursday, July 20, 1922

Weekly newspaper from Edmond, Oklahoma that includes local, state, and national news along with advertising.
Date: July 20, 1922
Creator: Adamson, Royce B.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Oilton Gusher (Oilton, Okla.), Vol. 7, No. 7, Ed. 1 Thursday, July 20, 1922 (open access)

The Oilton Gusher (Oilton, Okla.), Vol. 7, No. 7, Ed. 1 Thursday, July 20, 1922

Weekly newspaper from Oilton, Oklahoma that includes local, state, and national news along with advertising.
Date: July 20, 1922
Creator: Admire, Eli L.
Object Type: Newspaper
System: The Gateway to Oklahoma History
Your Body in Flight (open access)

Your Body in Flight

Manual illustrated with cartoons for quick memorization demonstrating the effects of flight on the human body and the best practices for safe aviation.
Date: July 20, 1943
Creator: Aero Medical laboratory
Object Type: Book
System: The Portal to Texas History
Pinhole closure measurements (open access)

Pinhole closure measurements

Spatial-filter pinholes and knife-edge samples were irradiated in vacuum by 1053-nm, 5-20 ns pulses at intensities to 500 GW/cm<sup2</sup>. The knife-edge samples were fabricated of plastic, carbon, ahnuinum, stainless steel, molybdenum, tantalum, gold and an absorbing glass. Time-resolved two-beam interferometry with a 40-ns probe pulse was used to observe phase shifts in the expanding laser-induced plasma. For all of these materials, at any time during square-pulse irradiation, the phase shift fell exponentially with distance from the edge of the sample. The expansion was characterized by the propagation velocity V<sub>2x</sub> of the contour for a 2(pi) phase shift. To within experimental error, V<sub>2x</sub>, was constant during irradiation at a particular intensity, and it increased linearly with intensity for intensities <300 GW/cn<sup>2</sup>. For metal samples, V, exhibited an approximate M<sup>-0.5</sup> dependence where M is the atomic mass. Plasmas of plastic, carbon and absorbing glass produced larger phase shifts, and expanded more rapidly, than plasmas of the heavy metals. The probe beam and interferometer were also used to observe the closing of pinholes. With planar pinholes, accumulation of on-axis plasma was observed along with the advance of plasma away from the edge of the hole. On-axis closure was not observed in square, 4-leaf …
Date: July 20, 1998
Creator: Afeyan, B. B.; Boley, C. D.; Estabrook, K. G.; Kirkwood, R. K.; Milam, D.; Murray, J. E. et al.
Object Type: Article
System: The UNT Digital Library
BASEMENT BOX 66.0301

BASEMENT BOX 66.0301

Photograph of a firefighter leaning out a door marked "Hotel" talking to a police officer. Caption: "Nichols Hills Officer Donald Keas, left, and fire Lt. Melvin Carton stand at back door of the Next Door Club where an unidentified man's burned body was found this morning."
Date: July 20, 1972
Creator: Aker, Joe
Object Type: Photograph
System: The Gateway to Oklahoma History
[Photograph 2012.201.B0110.0246]

[Photograph 2012.201.B0110.0246]

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Don Brown, left , and Dave Clayton . . . handle "definitely a miracle."
Date: July 20, 1971
Creator: Aker, Joe
Object Type: Photograph
System: The Gateway to Oklahoma History
[Photograph 2012.201.B0285.0042]

[Photograph 2012.201.B0285.0042]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Mrs. W. D. Hawley, left, and Mrs. Tooley Bailey, members of the League of Women Voters of Oklahoma City, study the new precinct boundaries of Oklahoma County."
Date: July 20, 1972
Creator: Aker, Joe
Object Type: Photograph
System: The Gateway to Oklahoma History
[Photograph 2012.201.B0338B.0330]

[Photograph 2012.201.B0338B.0330]

Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date: July 20, 1972
Creator: Aker, Joe
Object Type: Photograph
System: The Gateway to Oklahoma History
[Photograph 2012.201.B0999.0109]

[Photograph 2012.201.B0999.0109]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "ROAD RUNNER,' by Comanche Indian artist Diana O'Leary of Scottsdale, Ariz., is among new painting and drawings now on view in a new Indian Painting show at the Sales and Rental Gallery, Oklahoma Art Center, Fair Park."
Date: July 20, 1971
Creator: Aker, Joe
Object Type: Photograph
System: The Gateway to Oklahoma History