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7,828 Matching Results

Start Over Month March Day 23rd

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Results: 1 - 24 of 7,828 next
Best Match Title Creator Date Created (Newest) Date Created (Oldest) Date Added (Newest) Date Added (Oldest)
Radionuclides in plankton from the South Pacific Basin (open access)

Radionuclides in plankton from the South Pacific Basin

We have initiated an investigation of the utility of marine plankton as bioconcentrating samplers of low-level marine radioactivity in the southern hemisphere. A literature review has shown that both freshwater and marine plankton have trace element and radionuclide concentration factors (relative to water) of up to 10/sup 4/. We participated in Operations Deepfreeze 1981 and 1982, collecting a total of 48 plankton samples from the USCGC Glacier on its Antarctic cruises. Battelle Pacific Northwest Laboratories sampled air, water, rain, and fallout. We were able to measure concentrations in plankton of the naturally-occurring radionuclides /sup 7/Be, /sup 40/K, and the U and Th series, and we believe that we have detected low levels of /sup 144/Ce and /sup 95/Nb in seven samples ranging as far south as 68/sup 0/. Biological identification of the plankton suggests a possible correlation between radionuclide concentration and the protozoa content of the samples. 7 references, 5 figures.
Date: March 23, 1984
Creator: Marsh, K.V. & Buddemeier, R.W.
Object Type: Report
System: The UNT Digital Library
Heat transfer research and power cycle transient modeling (open access)

Heat transfer research and power cycle transient modeling

Fine axial flutes enhance heat transfer in vertical shell-and-tube exchangers with water inside the tubes and ammonia evaporating or condensing in layer flow on the shell side. Single-tube experiments with R-11 and ammonia indicate local shell-side coefficients 3 to 5 times those for corresponding smooth tubes. Single-tube experiments with water indicate that at moderate velocities the tube-side coefficients are enhanced by a factor equal to the ratio of fluted-to-smooth surface areas while the fluid friction is similarly increased. The experimental data are transformed into mean individual coefficients for ammonia and water. Overall coefficients for a particular case are presented to illustrate the efficacy of enhancement by flutes on one or both sides of the heat transfer surface. Means are described for using emerging data to predict the static and dynamic behavior of the power cycle and the interactions of components throughout the complete power plant.
Date: March 23, 1977
Creator: Rothfus, R.R. & Neuman, C.P.
Object Type: Article
System: The UNT Digital Library
Evaluation of extraction chromatography for americium recovery (open access)

Evaluation of extraction chromatography for americium recovery

Extraction, or reverse-phase partition chromatography, as used mostly for analytical separations, employs an organic solvent extractant as a stationary phase on an inert support material. This technique, which has the advantage of utilizing the versatility of solvent extraction systems with the less expensive operation of ion exchange equipment, was evaluated for a process to recover low level concentrations of americium from acidic process waste streams at Rocky Flats. The bidentate organophosphorous extractant DHDECMP (dihexyl-N, N-diethylcarbamylmethylene phosphonate) was used as the stationary phase since it was shown to effectively scavenge americium from acidic waste streams without significantly extracting impurity ions. Over 30 support materials were evaluated for DHDECMP capacity and for their ability to retain the extractant. Of the supports tested, the Amberlite XAD macroreticular sorbents were found to have the highest DHDECMP capacity. Amberlite XAD-4 beads retained the extractant significantly better than the other supports evaluated. Thus, this solvent was tested for americium breakthrough capacity and compared to the theoretical capacity.
Date: March 23, 1977
Creator: Alford, C. E. & Navratil, J. D.
Object Type: Report
System: The UNT Digital Library
Calculation of Doppler Coefficient and Other Safety Parameters for a Large Fast Oxide Reactor (open access)

Calculation of Doppler Coefficient and Other Safety Parameters for a Large Fast Oxide Reactor

Several safety parameters are calculated for a large, fast, Na-cooled, oxide-fueled reactor. The Doppler coefficient is studied as regards its effect on the reactivity during a power excursion, and its dependence on the neutron spectrum, on the concentrations of U/sup 238/, Pu /sup 239/ , a nd Pu/sup 240/, on spatial temperature and power distributions, and on temperature. Other parameters studied include the Na temperature coefficient of reactivity, and the reactivity insertion caused by total Na loss; reactivity coefficients caused by thermal expansion of fuel and steel cladding; the excess operating reactivity; and the reactivity caused by a fuel slump. The effects of a Be reflector on neutron lifetimes are determined. The safety aspects are balanced against economic considerations. (T.F.H.)
Date: March 23, 1961
Creator: Greebler, P.; Hutchins, B. A. & Sueoka, J. R.
Object Type: Report
System: The UNT Digital Library
[News Clip: Stern] captions transcript

[News Clip: Stern]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: March 23, 1994, 5:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
The Mangum Star. (Mangum, Okla. Terr.), Vol. 17, No. 38, Ed. 1 Thursday, March 23, 1905 (open access)

The Mangum Star. (Mangum, Okla. Terr.), Vol. 17, No. 38, Ed. 1 Thursday, March 23, 1905

Weekly newspaper from Mangum, Oklahoma that includes local, territorial, and national news along with advertising.
Date: March 23, 1905
Creator: Echols, R. C.
Object Type: Newspaper
System: The Gateway to Oklahoma History
Taloga Times-Advocate (Taloga, Okla.), Vol. 28, No. 41, Ed. 1 Thursday, March 23, 1922 (open access)

Taloga Times-Advocate (Taloga, Okla.), Vol. 28, No. 41, Ed. 1 Thursday, March 23, 1922

Weekly newspaper from Taloga, Oklahoma that includes local, state, and national news along with advertising.
Date: March 23, 1922
Creator: unknown
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Greer County Democrat (Mangum, Okla.), Vol. 26, No. 28, Ed. 1 Thursday, March 23, 1916 (open access)

The Greer County Democrat (Mangum, Okla.), Vol. 26, No. 28, Ed. 1 Thursday, March 23, 1916

Weekly newspaper from Mangum, Oklahoma that includes local, state, and national news along with advertising.
Date: March 23, 1916
Creator: Anderson, A. W.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Oklahoma Democrat. (Altus, Okla.), Vol. 5, No. 1, Ed. 1 Thursday, March 23, 1911 (open access)

The Oklahoma Democrat. (Altus, Okla.), Vol. 5, No. 1, Ed. 1 Thursday, March 23, 1911

Weekly newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: March 23, 1911
Creator: Ruthruff, C. E.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Oklahoma Democrat (Altus, Okla.), Vol. 9, No. 3, Ed. 1 Thursday, March 23, 1916 (open access)

The Oklahoma Democrat (Altus, Okla.), Vol. 9, No. 3, Ed. 1 Thursday, March 23, 1916

Weekly newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: March 23, 1916
Creator: unknown
Object Type: Newspaper
System: The Gateway to Oklahoma History
Oklahoma State Register. (Guthrie, Okla.), Vol. 14, No. 12, Ed. 1 Thursday, March 23, 1905 (open access)

Oklahoma State Register. (Guthrie, Okla.), Vol. 14, No. 12, Ed. 1 Thursday, March 23, 1905

Weekly newspaper from Guthrie, Oklahoma Territory that includes local, territorial, and national news along with advertising.
Date: March 23, 1905
Creator: Golobie, John
Object Type: Newspaper
System: The Gateway to Oklahoma History
Guthrie Daily News. (Guthrie, Okla. Terr.), Vol. 5, No. 1439, Ed. 1 Friday, March 23, 1894 (open access)

Guthrie Daily News. (Guthrie, Okla. Terr.), Vol. 5, No. 1439, Ed. 1 Friday, March 23, 1894

Daily newspaper from Guthrie, Oklahoma Territory that includes local, territorial, and national news along with advertising.
Date: March 23, 1894
Creator: unknown
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Oklahoma Safeguard. (Guthrie, Okla.), Vol. 11, No. 8, Ed. 1 Thursday, March 23, 1905 (open access)

The Oklahoma Safeguard. (Guthrie, Okla.), Vol. 11, No. 8, Ed. 1 Thursday, March 23, 1905

Weekly newspaper from Guthrie, Oklahoma Territory that includes local, territorial, and national news along with advertising.
Date: March 23, 1905
Creator: Buchanan, C. A.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Willow Times (Willow, Okla.), Vol. 1, No. 47, Ed. 1 Friday, March 23, 1917 (open access)

The Willow Times (Willow, Okla.), Vol. 1, No. 47, Ed. 1 Friday, March 23, 1917

Weekly newspaper from Willow, Oklahoma that includes local, state, and national news along with advertising.
Date: March 23, 1917
Creator: Roper, Ira T.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Cushing Independent (Cushing, Okla.), Vol. 20, No. 8, Ed. 1 Friday, March 23, 1917 (open access)

The Cushing Independent (Cushing, Okla.), Vol. 20, No. 8, Ed. 1 Friday, March 23, 1917

Weekly newspaper from Cushing, Oklahoma that includes local, state, and national news along with advertising.
Date: March 23, 1917
Creator: Roff, Charles H.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Tyrone Observer. (Tyrone, Okla.), Vol. 18, No. 42, Ed. 1 Thursday, March 23, 1922 (open access)

The Tyrone Observer. (Tyrone, Okla.), Vol. 18, No. 42, Ed. 1 Thursday, March 23, 1922

Weekly newspaper from Tyrone, Oklahoma that includes local, state, and national news along with advertising.
Date: March 23, 1922
Creator: unknown
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Guthrie Daily Star (Guthrie, Okla.), Vol. 9, No. 11, Ed. 1 Saturday, March 23, 1912 (open access)

The Guthrie Daily Star (Guthrie, Okla.), Vol. 9, No. 11, Ed. 1 Saturday, March 23, 1912

Daily newspaper from Guthrie, Oklahoma that includes local, state, and national news along with advertising.
Date: March 23, 1912
Creator: Hornaday, W. H.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Altus Weekly News. (Altus, Okla.), Vol. 18, No. 4, Ed. 1 Thursday, March 23, 1916 (open access)

The Altus Weekly News. (Altus, Okla.), Vol. 18, No. 4, Ed. 1 Thursday, March 23, 1916

Weekly newspaper from Altus, Oklahoma that includes local, county, state, and national news along with advertising.
Date: March 23, 1916
Creator: Orr, J. P.
Object Type: Newspaper
System: The Gateway to Oklahoma History
Doctoral Recital: 2013-03-23 – Lisa Bost-Sandberg, flute and alto flute

Doctoral Recital: 2013-03-23 – Lisa Bost-Sandberg, flute and alto flute

Recital presented at the UNT College of Music Voertman Hall in partial fulfillment of the Doctor of Musical Arts (DMA) degree.
Date: March 23, 2013
Creator: Bost-Sandberg, Lisa
Object Type: Video
System: The UNT Digital Library
The Guymon Herald. (Guymon, Okla.), Vol. 21, No. 2, Ed. 1 Thursday, March 23, 1911 (open access)

The Guymon Herald. (Guymon, Okla.), Vol. 21, No. 2, Ed. 1 Thursday, March 23, 1911

Weekly newspaper from Guymon, Oklahoma that includes local, state, and national news along with advertising.
Date: March 23, 1911
Creator: Zimmerman, Warren
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Guymon Herald. (Guymon, Okla.), Vol. 26, No. 3, Ed. 1 Thursday, March 23, 1916 (open access)

The Guymon Herald. (Guymon, Okla.), Vol. 26, No. 3, Ed. 1 Thursday, March 23, 1916

Weekly newspaper from Guymon, Oklahoma that includes local, state, and national news along with advertising.
Date: March 23, 1916
Creator: Denny, J. Q.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Guymon Herald. (Guymon, Okla. Terr.), Vol. 15, No. 5, Ed. 1 Thursday, March 23, 1905 (open access)

The Guymon Herald. (Guymon, Okla. Terr.), Vol. 15, No. 5, Ed. 1 Thursday, March 23, 1905

Weekly newspaper from Guymon, Oklahoma Territory that includes local, territorial, and national news along with advertising.
Date: March 23, 1905
Creator: unknown
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Guymon Herald. (Guymon, Okla.), Vol. 32, No. 4, Ed. 1 Thursday, March 23, 1922 (open access)

The Guymon Herald. (Guymon, Okla.), Vol. 32, No. 4, Ed. 1 Thursday, March 23, 1922

Weekly newspaper from Guymon, Oklahoma that includes local, state, and national news along with advertising.
Date: March 23, 1922
Creator: unknown
Object Type: Newspaper
System: The Gateway to Oklahoma History
Cushing Independent. (Cushing, Okla.), Vol. 10, No. 15, Ed. 1 Thursday, March 23, 1911 (open access)

Cushing Independent. (Cushing, Okla.), Vol. 10, No. 15, Ed. 1 Thursday, March 23, 1911

Weekly newspaper from Cushing, Oklahoma that includes local, state, and national news along with advertising.
Date: March 23, 1911
Creator: Holland, Al. H.
Object Type: Newspaper
System: The Gateway to Oklahoma History