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Nitrogen 12
N{sup 12} is shown to have a half life of 12.5 {+-} 1 milliseconds, and a positron upper limit of 16.6 {+-} 0.2 Mev. It is produced by the reaction C{sup 12}(p,n)N{sup 12}, and has a threshold proton energy of 20.0 Mev. This indicates that N{sup 12} is within about 200 Kev of being unstable against proton emission. The mass of N{sup 12} is 12.0228 {+-} 0.00015, and the beta transition is allowed.
Date:
January 19, 1949
Creator:
Alvarez, Luis W.
Object Type:
Report
System:
The UNT Digital Library
The El Reno Daily Tribune (El Reno, Okla.), Vol. 58, No. 171, Ed. 1 Monday, September 19, 1949
Daily newspaper from El Reno, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 19, 1949
Creator:
Harle, Budge
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The El Reno Daily Tribune (El Reno, Okla.), Vol. 58, No. 249, Ed. 1 Monday, December 19, 1949
Daily newspaper from El Reno, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 19, 1949
Creator:
Harle, Budge
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Baylor County Banner (Seymour, Tex.), Vol. 53, No. 38, Ed. 1 Thursday, May 19, 1949
Weekly newspaper from Seymour, Texas that includes local, state, and national news along with advertising.
Date:
May 19, 1949
Creator:
Harrison, O. C.
Object Type:
Newspaper
System:
The Portal to Texas History
The Dublin Progress (Dublin, Tex.), Vol. 61 YEARS, No. 22, Ed. 1 Friday, August 19, 1949
Weekly newspaper from Dublin, Texas that includes local, state, and national news along with advertising.
Date:
August 19, 1949
Creator:
Perry, Francis E.
Object Type:
Newspaper
System:
The Portal to Texas History
The Denison Press (Denison, Tex.), Vol. 21, No. 8, Ed. 1 Friday, August 19, 1949
Weekly newspaper from Denison, Texas that includes local, state and national news along with advertising.
Date:
August 19, 1949
Creator:
Anderson, LeRoy M.
Object Type:
Newspaper
System:
The Portal to Texas History
The Shamrock Texan (Shamrock, Tex.), Vol. 46, No. 3, Ed. 1 Thursday, May 19, 1949
Weekly newspaper from Shamrock, Texas that includes local, state, and national news along with advertising.
Date:
May 19, 1949
Creator:
Montgomery, Arval
Object Type:
Newspaper
System:
The Portal to Texas History
The Bogata News (Bogata, Tex.), Vol. 38, No. 43, Ed. 1 Friday, August 19, 1949
Weekly newspaper from Bogata, Texas that includes local, state, and national news along with advertising.
Date:
August 19, 1949
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Comanche Chief (Comanche, Tex.), Vol. 77, No. 5, Ed. 1 Friday, August 19, 1949
Weekly newspaper from Comanche, Texas that includes local, state, and national news along with advertising.
Date:
August 19, 1949
Creator:
Wilkerson, J. C.
Object Type:
Newspaper
System:
The Portal to Texas History
The McGregor Mirror and Herald-Observer (McGregor, Tex.), Vol. 61, No. 12, Ed. 1 Friday, August 19, 1949
Weekly newspaper from McGregor, Texas that includes local, state, and national news along with advertising.
Date:
August 19, 1949
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Rate of Burnout of Absorbers
Report discussing change in absorptivity of some rare earth elements over time.
Date:
July 19, 1949
Creator:
Gillette, P. R.
Object Type:
Report
System:
The UNT Digital Library
Spontaneous Fission of 48
Report discussing an experiment to reinvestigate the spontaneous fission of 48 (Pu-238) in an effort to determine a more accurate value for the spontaneous fission constant that was found in a previous experiment.
Date:
December 19, 1949
Creator:
Jungerman, John A.
Object Type:
Report
System:
The UNT Digital Library
Aftermath of May 18, 1949 Flood on Oklahoma State Highway #81
Photograph of an aerial shot of the Washita River flooding a portion of State Highway 81. Note that several buildings are visible in this photograph with a few of them being at risk of being or was flooded. Furthermore, the bridge is completely flooded by the Washita River making travel impossible. The back of the photo proclaims, “Approach to bridge – State Highway No. 81, after flood of May 18, 1949 on the Washita.”
Date:
May 19, 1949
Creator:
Ginter Photo Co.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Aftermath of May 18, 1949 Flood on Oklahoma State Highway #81
Photograph of an aerial shot of the Washita River flooding a portion of State Highway No. 81. Several buildings are visible along Highway 81 close to the river. The back of the photo proclaims, “Oklahoma State Highway No. 81 after the May 18, 1949 flood. See Okla-10-054; 053.”
Date:
May 19, 1949
Creator:
Ginter Photo Co.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
North Side of Rock Island Railroad Bridge After 18 May 1949 Flood
Photograph of an aerial shot of a flooded Rock Island Railroad bridge and surrounding area. The back of the photograph proclaims, “Approach to North side of Rock Island railroad bridge – track washed out after the flood of May 18, 1949.”
Date:
May 19, 1949
Creator:
Ginter Photo Co.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Owl Creek Detention Reservoir Site #2
Photograph of an aerial shot of Owl Creek Detention Reservoir site #2 and the surrounding area. A barn or miscellaneous building sits alone located at the center right background of photograph. The back of the photograph proclaims, “Ok-SCD-13-Wa.2. Site No. 2. Owl Creek Detention Reservoir. This photo was taken when heavy rains of May 18 reached peak flow at this reservoir which was empty before rain. The water reached one feet over lip. Farm land below would have flooded but for Detention Reservoir.”
Date:
May 19, 1949
Creator:
Ginter Photo Co.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
The Caldwell News and The Burleson County Ledger (Caldwell, Tex.), Vol. 62, No. 55, Ed. 1 Friday, August 19, 1949
Weekly newspaper from Caldwell, Texas that includes local, state and national news along with extensive advertising.
Date:
August 19, 1949
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Bastrop Advertiser (Bastrop, Tex.), Vol. 97, No. 12, Ed. 1 Thursday, May 19, 1949
Weekly newspaper from Bastrop, Texas that includes local, state and national news along with extensive advertising.
Date:
May 19, 1949
Creator:
Standifer, Amy S.
Object Type:
Newspaper
System:
The Portal to Texas History
Sweetwater Reporter (Sweetwater, Tex.), Vol. 52, No. 93, Ed. 1 Tuesday, April 19, 1949
Daily newspaper from Sweetwater, Texas that includes local, state and national news along with advertising.
Date:
April 19, 1949
Creator:
Baker, Allen
Object Type:
Newspaper
System:
The Portal to Texas History
Sweetwater Reporter (Sweetwater, Tex.), Vol. 52, No. 119, Ed. 1 Thursday, May 19, 1949
Daily newspaper from Sweetwater, Texas that includes local, state and national news along with advertising.
Date:
May 19, 1949
Creator:
Baker, Allen
Object Type:
Newspaper
System:
The Portal to Texas History
Sweetwater Reporter (Sweetwater, Tex.), Vol. 52, No. 145, Ed. 1 Sunday, June 19, 1949
Daily newspaper from Sweetwater, Texas that includes local, state and national news along with advertising.
Date:
June 19, 1949
Creator:
Baker, Allen
Object Type:
Newspaper
System:
The Portal to Texas History
Sweetwater Reporter (Sweetwater, Tex.), Vol. 52, No. 170, Ed. 1 Tuesday, July 19, 1949
Daily newspaper from Sweetwater, Texas that includes local, state and national news along with advertising.
Date:
July 19, 1949
Creator:
Baker, Allen
Object Type:
Newspaper
System:
The Portal to Texas History
Sweetwater Reporter (Sweetwater, Tex.), Vol. 52, No. 197, Ed. 1 Friday, August 19, 1949
Daily newspaper from Sweetwater, Texas that includes local, state and national news along with advertising.
Date:
August 19, 1949
Creator:
Baker, Allen
Object Type:
Newspaper
System:
The Portal to Texas History
Sweetwater Reporter (Sweetwater, Tex.), Vol. 52, No. 222, Ed. 1 Monday, September 19, 1949
Daily newspaper from Sweetwater, Texas that includes local, state and national news along with advertising.
Date:
September 19, 1949
Creator:
Baker, Allen
Object Type:
Newspaper
System:
The Portal to Texas History