Degree Department

Texarkana Daily Democrat. (Texarkana, Ark.), Vol. 9, No. 202, Ed. 1 Saturday, April 1, 1893 (open access)

Texarkana Daily Democrat. (Texarkana, Ark.), Vol. 9, No. 202, Ed. 1 Saturday, April 1, 1893

Daily newspaper from Texarkana, Arkansas that includes local, state, and national news along with extensive advertising.
Date: April 1, 1893
Creator: Gardner, J. W.
Object Type: Newspaper
System: The Portal to Texas History
The Daily Texarkanian. (Texarkana, Ark.), Vol. 12, No. 203, Ed. 1 Wednesday, April 1, 1896 (open access)

The Daily Texarkanian. (Texarkana, Ark.), Vol. 12, No. 203, Ed. 1 Wednesday, April 1, 1896

Daily newspaper from Texarkana, Arkansas that includes local, state, and national news along with extensive advertising.
Date: April 1, 1896
Creator: Gardner, J. W.
Object Type: Newspaper
System: The Portal to Texas History
The Daily Texarkanian. (Texarkana, Ark.), Vol. 16, No. 202, Ed. 1 Sunday, April 1, 1900 (open access)

The Daily Texarkanian. (Texarkana, Ark.), Vol. 16, No. 202, Ed. 1 Sunday, April 1, 1900

Daily newspaper from Texarkana, Arkansas that includes local, state, and national news along with extensive advertising.
Date: April 1, 1900
Creator: Gardner, J. W.
Object Type: Newspaper
System: The Portal to Texas History
The Daily Texarkanian. (Texarkana, Ark.), Vol. 14, No. 221, Ed. 1 Friday, April 1, 1898 (open access)

The Daily Texarkanian. (Texarkana, Ark.), Vol. 14, No. 221, Ed. 1 Friday, April 1, 1898

Daily newspaper from Texarkana, Arkansas that includes local, state, and national news along with extensive advertising.
Date: April 1, 1898
Creator: Gardner, J. W.
Object Type: Newspaper
System: The Portal to Texas History
The Daily Texarkanian. (Texarkana, Ark.), Vol. 13, No. 202, Ed. 1 Thursday, April 1, 1897 (open access)

The Daily Texarkanian. (Texarkana, Ark.), Vol. 13, No. 202, Ed. 1 Thursday, April 1, 1897

Daily newspaper from Texarkana, Arkansas that includes local, state, and national news along with extensive advertising.
Date: April 1, 1897
Creator: Gardner, J. W.
Object Type: Newspaper
System: The Portal to Texas History
The Daily Texarkanian. (Texarkana, Ark.), Vol. 11, No. 192, Ed. 1 Monday, April 1, 1895 (open access)

The Daily Texarkanian. (Texarkana, Ark.), Vol. 11, No. 192, Ed. 1 Monday, April 1, 1895

Daily newspaper from Texarkana, Arkansas that includes local, state, and national news along with extensive advertising.
Date: April 1, 1895
Creator: Gardner, J. W.
Object Type: Newspaper
System: The Portal to Texas History
Formaldehyde Absorption toward W51 (open access)

Formaldehyde Absorption toward W51

We have measured formaldehyde (H{sub 2}CO) absorption toward the HII region complex W51A (G49.5-0.4) in the 6 cm and 2 cm wavelength rotational transitions with angular resolution of approximately 4 inch. The continuum HII region shows a large, previously undetected shell structure 5.5 pc along the major axis. We observe no H{sub 2}CO emission in regions of low continuum intensity. The absorption, converted to optical depth, shows a higher degree of clumping than previous maps at lower resolution. The good S/N of the maps allows accurate estimation of the complicated line profiles, showing some of the absorbing clouds to be quite patchy. We list the properties of the opacity spectra for a number of positions both in the clumps and in the more diffuse regions of the absorbing clouds, and derive column densities for the 1{sub 11} and 2{sub 12} rotational levels of ortho-formaldehyde.
Date: April 1, 1988
Creator: Kogut, A.; Smoot, G. F.; Bennett, C. L. & Petuchowski, S. J.
Object Type: Article
System: The UNT Digital Library
The J-TAC (Stephenville, Tex.), Vol. 25, No. 13, Ed. 1 Sunday, April 1, 1945 (open access)

The J-TAC (Stephenville, Tex.), Vol. 25, No. 13, Ed. 1 Sunday, April 1, 1945

Weekly student newspaper from John Tarleton Agricultural College in Stephenville, Texas that includes local, state and campus news along with advertising.
Date: April 1, 1945
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
The J-TAC (Stephenville, Tex.), Vol. 20, No. 24, Ed. 1 Tuesday, April 1, 1941 (open access)

The J-TAC (Stephenville, Tex.), Vol. 20, No. 24, Ed. 1 Tuesday, April 1, 1941

Weekly student newspaper from John Tarleton Agricultural College in Stephenville, Texas that includes local, state and campus news along with advertising.
Date: April 1, 1941
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
The J-TAC (Stephenville, Tex.), Vol. 8, No. 27, Ed. 1 Sunday, April 1, 1928 (open access)

The J-TAC (Stephenville, Tex.), Vol. 8, No. 27, Ed. 1 Sunday, April 1, 1928

Weekly student newspaper from John Tarleton Agricultural College in Stephenville, Texas that includes local, state and campus news along with advertising.
Date: April 1, 1928
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Optical assessment of large marine particles: Development of an imaging and analysis system for quantifying large particle distributions and fluxes. Final report, June 1992--May 1996 (open access)

Optical assessment of large marine particles: Development of an imaging and analysis system for quantifying large particle distributions and fluxes. Final report, June 1992--May 1996

The central goal of DOE`s Ocean Margin Program (OMP) has been to determine whether continental shelves are quantitatively significant in removing carbon dioxide from the atmosphere and isolating it via burial in sediments or exporting it to the open ocean. The overall objective of this work within OMP was to develop an instrument package to measure the large aggregate population of particles in the shelf/slope environment at a rate sufficient to integrate the observed particle distributions into the coupled physical and biogeochemical models necessary to understand the shelf and slope as a system. Pursuant to this the authors have developed a video and optical instrument package (LAPS: Large Aggregate Profiling System) and assembled the computer and software methods to routinely measure a wide spectrum of the large aggregate population of particles in the shelf/slope environment. This particle population, encompassing the `marine snow` size particles (dia. > 0.5 mm), is thought to be the major pathway of material flux in the ocean. The instrument package collects aggregate abundance and size spectrum data using two video camera/strobe subsystems with a third subsystem collecting CTD, beam attenuation and fluorescence data. Additionally, measurements of particle flux were made with sediment traps deployed on the …
Date: April 1, 1997
Creator: Walsh, I. D. & Gardner, W. D.
Object Type: Report
System: The UNT Digital Library
Notes on Switching between Proton and gold Operation in Booster and AGS (open access)

Notes on Switching between Proton and gold Operation in Booster and AGS

N/A
Date: April 1, 2000
Creator: Ahrens, L. A. & Gardner, C. J.
Object Type: Report
System: The UNT Digital Library
Scientific drilling in the Valles caldera magma-hydrothermal system, New Mexico (open access)

Scientific drilling in the Valles caldera magma-hydrothermal system, New Mexico

None
Date: April 1, 1994
Creator: Goff, F.; Gardner, J. N.; Heiken, G. & Hulen, J. B.
Object Type: Report
System: The UNT Digital Library
Physical and Mechanical Metallurgy Studies on Delta-Stabilized Plutonium- Gallium Alloys (open access)

Physical and Mechanical Metallurgy Studies on Delta-Stabilized Plutonium- Gallium Alloys

None
Date: April 1, 1965
Creator: Gardner, H. R.
Object Type: Report
System: The UNT Digital Library
SUDOKU A STORY & A SOLVER (open access)

SUDOKU A STORY & A SOLVER

Sudoku, also known as Number Place, is a logic-based placement puzzle. The aim of the puzzle is to enter a numerical digit from 1 through 9 in each cell of a 9 x 9 grid made up of 3 x 3 subgrids (called ''regions''), starting with various digits given in some cells (the ''givens''). Each row, column, and region must contain only one instance of each numeral. Completing the puzzle requires patience and logical ability. Although first published in a U.S. puzzle magazine in 1979, Sudoku initially caught on in Japan in 1986 and attained international popularity in 2005. Last fall, after noticing Sudoku puzzles in some newspapers and magazines, I attempted a few just to see how hard they were. Of course, the difficulties varied considerably. ''Obviously'' one could use Trial and Error but all the advice was to ''Use Logic''. Thinking to flex, and strengthen, those powers, I began to tackle the puzzles systematically. That is, when I discovered a new tactical rule, I would write it down, eventually generating a list of ten or so, with some having overlap. They served pretty well except for the more difficult puzzles, but even then I managed to develop an …
Date: April 1, 2006
Creator: GARDNER, P.R.
Object Type: Article
System: The UNT Digital Library
Characterization of Vadose Zone Sediments Below the TX Tank Farm: Probe Holes C3830, C3831, C3832 and 299-W10-27 (open access)

Characterization of Vadose Zone Sediments Below the TX Tank Farm: Probe Holes C3830, C3831, C3832 and 299-W10-27

Pacific Northwest National Laboratory performed detailed analyses on vadose zone sediments from within Waste Management Area T-TX-TY. This report contains all the geologic, geochemical, and selected physical characterization data collected on vadose zone sediment recovered from three probe holes (C3830, C3831, and C3832) in the TX Tank Farm, and from borehole 299-W-10-27. Sediments from borehole 299-W-10-27 are considered to be uncontaminated sediments that can be compared with contaminated sediments. This report also presents our interpretation of the sediment lithologies, the vertical extent of contamination, the migration potential of the contaminants, and the likely source of the contamination in the vadose zone and groundwater below the TX Tank Farm. Sediment from the probe holes was analyzed for: moisture, radionuclide and carbon contents;, one-to-one water extracts (soil pH, electrical conductivity, cation, trace metal, and anion data), and 8 M nitric acid extracts. Overall, our analyses showed that common ion exchange is a key mechanism that influences the distribution of contaminants within that portion of the vadose zone affected by tank liquor. We did not observe significant indications of caustic alteration of the sediment mineralogy or porosity, or significant zones of slightly elevated pH values in the probe holes. The sediments do show …
Date: April 1, 2004
Creator: Serne, R JEFFREY.; Bjornstad, Bruce N.; Horton, Duane G.; Lanigan, David C.; Lindenmeier, Clark W.; Lindberg, Michael J. et al.
Object Type: Report
System: The UNT Digital Library
Dark Matter Constraints from a Cosmic Index of Refraction (open access)

Dark Matter Constraints from a Cosmic Index of Refraction

The dark-matter candidates of particle physics invariably possess electromagnetic interactions, if only via quantum fluctuations. Taken en masse, dark matter can thus engender an index of refraction which deviates from its vacuum value. Its presence is signaled through frequency-dependent effects: the real part yields dispersive effects in propagation, and the imaginary part yields such in attenuation. We discuss theoretical constraints on the expansion of the index of refraction with frequency, the physical interpretation of the terms, and the particular observations needed to isolate its coefficients. This, with the advent of new opportunities to view gamma-ray bursts at cosmological distance scales, gives us a new probe of dark matter. As a first application we use the time delay determined from radio afterglow observations of gamma-ray bursts to limit the charge-to-mass ratio of dark matter to |{var_epsilon}|/M < 1.8 x 10{sup -5} eV{sup -1} at 95% CL.
Date: April 1, 2009
Creator: Gardner, Susan & Latimer, David C.
Object Type: Article
System: The UNT Digital Library
Evening Tribune. (Galveston, Tex.), Vol. 11, No. 129, Ed. 1 Wednesday, April 1, 1891 (open access)

Evening Tribune. (Galveston, Tex.), Vol. 11, No. 129, Ed. 1 Wednesday, April 1, 1891

Daily newspaper from Galveston, Texas that includes local, state, and national news along with advertising.
Date: April 1, 1891
Creator: Burson, J. W.
Object Type: Newspaper
System: The Portal to Texas History
Preparation and evaluation of novel hydrous metal oxide (HMO)-supported noble metal catalysts (open access)

Preparation and evaluation of novel hydrous metal oxide (HMO)-supported noble metal catalysts

Hydrous Metal Oxides (HMOs) are chemically synthesized materials that, because of their high cation exchange capacity, possess a unique ability to allow the preparation of highly dispersed supported-metal catalyst precursors with high metal loadings. This study evaluates high weight loading Rh/HMO catalysts with a wide range of HMO support compositions, including hydrous titanium oxide (HTO), silica-doped hydrous titanium oxide (HTO:Si), hydrous zirconium oxide (HZO), and silica-doped hydrous zirconium oxide (HZO:Si), against conventional oxide-supported Rh catalysts with similar weight loadings and support chemistries. Catalyst activity measurements for a structure-sensitive model reaction (n-butane hydrogenolysis) as a function of catalyst activation conditions show superior activity and stability for the ZrO{sub 2}, HZO, and HZO:Si supports, although all of the Rh/HMO catalysts have high ethane selectivity indicative of high Rh dispersion. For the TiO{sub 2}-, HTO-, and HTO:Si supported Rh catalysts, a significant loss of both catalyst activity and Rh dispersion is observed at more aggressive activation conditions, consistent with TiO{sub x} migration associated with SMSI phenomena. Of all the Rh/HMO catalysts, the Rh/HZO:Si catalysts appear to offer the best tradeoff in terms of high Rh dispersion, high activity, and high selectivity.
Date: April 1, 1998
Creator: Gardner, Timothy J.; McLaughlin, Linda I.; Evans, Lindsey R. & Datye, Abhaya K.
Object Type: Report
System: The UNT Digital Library
Evening Tribune. (Galveston, Tex.), Vol. 7, No. 176, Ed. 1 Friday, April 1, 1887 (open access)

Evening Tribune. (Galveston, Tex.), Vol. 7, No. 176, Ed. 1 Friday, April 1, 1887

Daily newspaper from Galveston, Texas that includes local, state, and national news along with advertising.
Date: April 1, 1887
Creator: Burson, J. W.
Object Type: Newspaper
System: The Portal to Texas History
Examination of the pathways from soil to man for plutonium (open access)

Examination of the pathways from soil to man for plutonium

The data available on resuspension and ingestion as pathways of plutonium from soil to man were reviewed and a recommended limit based upon a conservative interpretation of the National Council on Radiation Protection and Measurements (NCRP) recommendations for limiting values was derived. Wind resuspension appeared to be the least limiting value with mechanical resuspension and pica in children among the more important. Ingestion of foodstuffs could also be an important pathway if it is assumed that all food is produced in the contaminated area.
Date: April 1, 1977
Creator: Healy, J. W.
Object Type: Report
System: The UNT Digital Library
The Texas Mohair Weekly (Rocksprings, Tex.), Vol. 20, No. 18, Ed. 1 Friday, April 1, 1938 (open access)

The Texas Mohair Weekly (Rocksprings, Tex.), Vol. 20, No. 18, Ed. 1 Friday, April 1, 1938

Weekly newspaper from Rocksprings, Texas that includes local, state, and national news along with advertising.
Date: April 1, 1938
Creator: Hutt, J. W.
Object Type: Newspaper
System: The Portal to Texas History
Evening Tribune. (Galveston, Tex.), Vol. 9, No. 117, Ed. 1 Monday, April 1, 1889 (open access)

Evening Tribune. (Galveston, Tex.), Vol. 9, No. 117, Ed. 1 Monday, April 1, 1889

Daily newspaper from Galveston, Texas that includes local, state, and national news along with advertising.
Date: April 1, 1889
Creator: Burson, J. W.
Object Type: Newspaper
System: The Portal to Texas History
The Chickasha Star. (Chickasha, Okla.), Vol. 26, No. 9, Ed. 1 Friday, April 1, 1921 (open access)

The Chickasha Star. (Chickasha, Okla.), Vol. 26, No. 9, Ed. 1 Friday, April 1, 1921

Weekly newspaper from Chickasha, Oklahoma that includes local, state and national news along with advertising.
Date: April 1, 1921
Creator: Kayser, J. W.
Object Type: Newspaper
System: The Gateway to Oklahoma History