117 Matching Results

Search Results

Results: 1 - 24 next
open access

Airship aerodynamics.

Description: "This manual is designed as a text for the instruction of airship student pilots .... to give the knowledge of aerodynamics essential to the operation of [lighter than air aircraft]."(Page 2.)
Date: February 11, 1941
Creator: United States. War Department.
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
open access

Engineer field manual : engineer troops.

Description: "This manual is designed to serve as a general reference on engineer organization. It covers the mission, classification, organization, equipment, armament, and training of engineer units."
Date: October 11, 1943
Creator: United States. War Department.
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
open access

Carrier-free Radioisotopes from Cyclotron Targets I. Preparation and Isolation of Sn113 and In114 from Cadmium

Description: The cyclotron is the only practical source of many carrier-free radioisotopes. The preparation and radiochemical isolation of a number of these activities, produced in the 60-inch cyclotron of Crocker Laboratory, will be presented in this paper and in subsequent papers of this series. In most cases the carrier-free radioisotopes were prepared for use in biological systems and the final preparations were in the form of isotonic saline solutions at a range of pH from 5 to 8. The present paper rep… more
Date: August 11, 1949
Creator: Maxwell, R. D.; Haymond, H. R.; Bobmberger, D. R.; Garrison, W. M. & Hamilton, J. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Ion-Exchange Separation of Zirconium and Hafnium

Description: In the course of a rather cursory examination of the elution of tetra-positive ions from the cation exchange resin Dowex 50 with hydrochloric acid solutions, the authors have discovered a very effective method of separating zirconium from hafnimu. In view of the great labor involved in preparing even reasonably pure hafnium compounds by existing methods, they feel that this procedure will prove very valuable to those interested in obtaining hafnium compounds free of zirconium. Although the cond… more
Date: October 11, 1948
Creator: Street, Kenneth, Jr. & Seaborg, Glenn T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fraunhofer Diffraction Pattern Produced by a Slit of Varying Width and its Application to High Speed Cameras

Description: Abstract: "A theoretical and experimental investigation is made of the diffraction pattern produced by a slit, whose aperture varies uniformly from a constant value A to zero. The results of this investigation are applied to a proposed high speed camera. It is shown that diffraction effects are very serious and cannot be neglected. It seems, unless the suggested design of this high speed camera is changed, the camera will be of little use for accurate measurements, and photographs will show too… more
Date: November 11, 1947
Creator: Geiger, F. E. & Brixner, Berlyn
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Safety Tests on Hand Stacking of U-235 Cubes

Description: From abstract: "Critical assembly tests have been made on the Pajarito Universal Machine to determine the safety limits of handstacking cubes of 95% U-235 in spherical geometries preparatory to making critical assemblies of U-235 in an "infinite" tuballoy tamper. The U-235 cubes were stacked as pseudospheres in a cavity at the top of a tuballoy block 12" high and 8" on a side, and the assembly tamped by locating it inside a doughnut shaped water tank whose tamping effect is equivalent to the ta… more
Date: October 11, 1948
Creator: Josephson, V.; Young, D. S. & Dike, R. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Newsmap. Monday, January 11, 1943 : week of January 1 to January 8

Description: Front: Text describes action on various war fronts: Rabaul, Solomons, Pacific, Wake, New Guinea, Burma, North Africa, Russia, Aleutians. Large world map is keyed to text and illustrates time zones around the world. Includes inset maps: Tunisia; USSR. Photographs: Japanese Bull's eye [a Nip carrier making a perfect circle trying to escape in the Battle of Midway]; "Kamerad" in Tunisia; Waiting for actions on a U.S. carrier; "General winter". Back: "Learn to Recognize These Vehicles" poster g… more
Date: January 11, 1943
Creator: [United States.] Army Orientation Course.
Item Type: Refine your search to only Poster
Partner: UNT Libraries Government Documents Department

Newsmap. Monday, October 11, 1943 : week of September 30 to October 7, 213th week of the war, 95th week of U.S. participation

Description: Front: Text describes action on various war fronts: Aegean Sea, Italy, Corsica, Russia, Norway, Southwest Pacific, Air offensive. Maps show Greece and Turkey, Eastern front, Central Italy. Includes photographs: Soldier killed by booby-trap, "Battleship X" is the USS South Dakota, Brenner Pass, Resting American soldiers following a battle in Munda. Back: Typical German infantry regiment. Illustration shows regiment. Text gives detailed description of Regimental Headquarters Company, Battalion… more
Date: October 11, 1943
Creator: [United States.] Army Orientation Course.
Item Type: Refine your search to only Poster
Partner: UNT Libraries Government Documents Department
open access

Activity of fission products

Description: This report compares the activity and disintegration energy of fission products from metal under two conditions of exposure: 200 Megawatt-days integrated exposure over a period of 180 days, and 400 Megawatt-days integrated exposure over a period of 360 days. (JL)
Date: November 11, 1948
Creator: Garbrecht, M. & Gillette, P. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Redox Committee: Conference notes and recommendations, meeting of April 11, 1949

Description: This report discusses recommendations for development work on the Redox Production Plant. It contains an outline for a relationship procedure between the architect engineer and General Electric Design Division; preparation of a material balance and process flow; the preparation of engineering flow diagrams, including lists of standard symbols for these diagrams; a material and equipment list; a project cost estimate; and Procedures covering institution and execution of work involving studies by… more
Date: April 11, 1949
Creator: Greager, O. H.; MacCready, W. K. & Seckendorff, E. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

100 Areas, January 1 through January 7, 1946

Description: During this period the B Pile operated at its assigned power level of 25 MW below rated level, except for 10 hours on January 5. The operating level of the D Pile remained at 25 MW below rating. The rate gain in excess reactivity during equilibrium operation has been about 1.8 inhours/day. On January 1, the power level of the F Pile was dropped to 25 MW below rating from its previous rated level. Rod A was in a favorable position to make a determination of the reactivity coefficients at the tim… more
Date: January 11, 1946
Creator: Jordan, W. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Extraction of Uranium from Iron Box Sludge

Description: It was desired to establish the adaptability of iron box sludge, a residue recovered in the initial concentration of domestic ores, as a raw material from the production of high purity U{sub 3}O{sub 8}. This report summarizes the experimental work on the extraction of uranium from iron box sludge and that on the removal of V{sub 2}O{sub 5} and P{sub 2}O{sub 5} from the solutions.
Date: March 11, 1947
Creator: O'Connors, R. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

200 Area stack contamination. Interim report, August 2, 1948--October 11, 1948

Description: In connection with the problem of eliminating contamination of the atmosphere by the exhaust from the 221 Building ventilation air stacks, sand filters were previously recommended. Construction of a sand filter in West Area is about completed and construction of a filter in East Area is well underway. This report summarizes the status, technical findings, and comments and suggestions since the writer`s last Interim Report, dated August 6, 1948, was issued.
Date: October 11, 1948
Creator: Lapple, C. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Study of the health aspects of dgreaser operation in the airlock of the 105 Building in the 100 H Area

Description: On June 29th and July 13th, 1949, the Industrial Hygiene Group of the Health Instrument Divisions at HAPO conducted a study of the health aspects of the degreaser operations carried on in the Airlock adjoining the 105 Building in the 100 H Area. This was done at the request of the Medical Division. The results of the study, together with certain pertinent information concerning degreaser operation, are reported in this report.
Date: August 11, 1949
Creator: Gill, W. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

100 Areas technical activities report -- Physics, November 1946

Description: This report divides the activities for November into three sections: D Pile; F Pile; and general physics. During November the D Pile was down twice for regularly scheduled shutdowns. Two scram occurred during the month, both of short duration. Five Special Request 15 tubes were discharged and recharged with Special Request 15. Some 13 inhour of reactivity were gained during the month. Vertical rod thimbles, 10 through 22, were tested. A Production Test was performed to determine the reactivity … more
Date: December 11, 1946
Creator: Gast, P. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Research Progress Meeting for March 11,1948

Description: The linear accelerator is again in operation after a shutdown fore repairs and minor changes. Radiofrequency checks of the instrument were made while the Van de Graaff was open. The vacuum of the system is now very good, the base pressure being 1.7 x 10{sup -6} mm Hg with a rate of rise of 800 s/{micro}s. Some preliminary results have been obtained on the activation of carbon with protons. The experiments were done using 10 mil, 50 mg/cm{sup 2} polystyrene discs. The activation curve obtained i… more
Date: March 11, 1948
Creator: Wakerling, R.K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen