UNT Libraries Government Documents Department - 13 Matching Results

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A Sensitive Particle Ionization Chamber for Neutron Detection

Description: Abstract. A particle ionization chamber of sensitivity sufficient to detect a source of one neutron per second has been used to measure the neutron yield from a thick target of sulfur upon bombardment with polonium alpha particles. The high-geometry boron trifluoride chamber used had an efficiency of 1.9 percent for fission neutrons. The neutron yield from a thick target of sulfur was measured by this instrument and found to be .0035 +- .0013 neutrons per million incident polonium alpha particl… more
Date: November 21, 1944
Creator: Sturm, William J. & Dabbs, John
Item Type: Refine your search to only Report
open access

The Influence of Operation on Tuballoy

Description: An attempt is made to estimate the influence of operation upon the mechanical properties of tubealloy. It is to be emphasized that the work is highly speculative, being base upon a set of judicious assumptions regarding the transport material within the metal and should not be used as a substitute for a set of well-planned experiments. The two principal effects considered are the hardening which results from the atomic displacement produced by the fission fragments and the changes in mechanical… more
Date: April 21, 1944
Creator: Seitz, Frederick, 1911-2008
Item Type: Refine your search to only Report
open access

Determination of Free Nitric Acid in UNH Solutions, Problem Assignment No. 208-X2A, Progress Report

Description: Technical report abstract: Since UNH is a highly dissociated compound which ionizes to NO3 and (UO2), the latter ion being very weakly basic, a solution of pure UNH is quite acid (pH about 3). It is possible to titrate to a phenolphthalein and point with standard caustic solution and obtain a figure which represents the free acid plus the NO3 from the the UNH. However, titration of the free nitric acid alone in such a solution presents quite a problem. By precipitating and removing uranium fro… more
Date: April 21, 1944
Creator: Parlour, A. K. & Hammond, C. W.
Item Type: Refine your search to only Report
open access

Chemical Research -- U233 Production and Extraction; Report for the Month Ending June 21, 1943

Description: Abstract. The precipitation of Pa233 with MnO2 from a solution of thorium nitrate has been studied in some detail and seems quite satisfactory up to 36 gm Th(HO3)4 4H2O per 100 cc solution. The concentration of Pa233 with respect to the manganese dioxide carrier and the thorium precipitated with the carrier appears to be accomplished quite well by either a series of MnO2 cycles or thorium iodate cycles. Volatility methods for both the separation of Pa233 from the original thorium and for its … more
Date: June 21, 1943
Creator: Franck, J.
Item Type: Refine your search to only Report
open access

General Engineering and Consulting Laboratory "Hot Service" Turbine Pump Progress Report: May 1 to June 15, 1948

Description: Introduction: "This report covers progress on the testing of the General Engineering and Consulting Laboratories Turbine Pump No. 1 from May 1, 1948 to Jun 15, 1948. All testing prior to April 30, 1948 has been described in Redox Experiment Testing Report No. 1 (Document HW-9474) and No. 2 (Document HW-9694)."
Date: June 21, 1948
Creator: Stringer, J. T. & Allen, A. W.
Item Type: Refine your search to only Report

Newsmap for the Armed Forces : UNO, 51 Nations Unite For Peace

Description: Front: The text highlights the founding of the UNO. Map: UNO members, their colonies and territories. Photographs: the opening session of the UNO at Central Hall, London, 10 January, 1945; American delegates to the UNO in conference. Back: Illustration of a sailor and French ships accompany text describing how the French fleet was scuttled at Toulan--destroying the harbor and surrounding installations--to avoid use by the Germans.
Date: January 21, 1946
Creator: [United States.] Army Information Branch.
Item Type: Refine your search to only Poster

Newsmap. Monday, February 21, 1944 : week of February 10 to February 17 : 232nd week of the war, 114th week of U.S. participation

Description: Front: Text describes action on various war fronts: Italy, USSR, Western Europe, Southwest Pacific, Central Pacific, Submarines. Maps show the Gulf of Finland, Russia; Italy. Inset map shows Cassino area, Italy. Includes 11 photographs. Back: Landing Craft. Illustrations and photographs of various landing craft with descriptive text.
Date: February 21, 1944
Creator: [United States.] Army Service Forces. Morale Services Division. Army Information Branch.
Item Type: Refine your search to only Poster

Newsmap. Monday, December 21, 1942 : week of December 11 to December 18

Description: Front: Text describes action on various war fronts: Libya; Tunisia; New Guinea; Solomons; China; Russia; Aleutians Large world map is keyed to text and illustrates time zones around the world. Includes inset maps: New Guinea; Mediterranean Sea; Russian front. Photographs: Supply dock; wrecked by recoil; Captured Italian flag; Hot on Rommel's heels; Yanks advance on Japs in New Guinea Back: Text describes the history and power of infantry. Includes 19 photographs and a map of Stalingrad… more
Date: December 21, 1942
Creator: [United States.] Army Orientation Course.
Item Type: Refine your search to only Poster

Newsmap. Monday, September 21, 1942 : week of September 11 to September 18

Description: Front: Text describes action on various war fronts: Russia, Madagascar, Solomon Islands, New Guinea, Aleutians, Far Eastern waters, Midway, China, West Coast, Western Europe, Mediterranean. Large map is keyed to text and illustrates time zones around the world. Inset maps show: Madagascar; Russian front (southern sectors), Madagascar in Africa Includes photographs: Night falls in North Africa; Stinger [twin machine-gun]; It was "impossible" [Capt. Edward Ellsberg's sub salvage work]; Blimps … more
Date: September 21, 1942
Creator: [United States.] Army Orientation Course.
Item Type: Refine your search to only Poster
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