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Some Excitation Functions of Bismuth

Description: Excitation functions have been measured, using a 38-Mev alpha-beam and a 19-Mev deuteron beam for the following reactions: Bi({alpha},2n)At{sup 211}, Bi({alpha},3n)At{sup 210}, Bi(d,p)Ra E, Bi(d,n)Po{sup 210}, and Bi(d,3n)Po{sup 209}. The results are summarized in Figs. 4 and 5 and Tables I and II. A new isotope of astatine, At{sup 210}, has been identified; this isotope has a half life of 8.3 hr., decaying by K-capture to Po{sup 210} with the emission of a 1.0-Mev gamma-ray and a few conversio… more
Date: October 10, 1948
Creator: Kelly, E.L. & Segre, E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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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
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Clarification of Redox Feed (1AF) by Filtration : A Semi-Works Study Progress, Redox Technical Data Study No. 8

Description: The following report was made to determine the effective clarity improvement, flow rate characteristics, and operational problems encountered on passing Redox uranium feed solution through sintered, modified Type 304 stainless steel filter elements.
Date: October 15, 1948
Creator: Cooper, V. R. & Coleman, E. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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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
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Nuclear Reactor Progress Report

Description: Technical report describing the building of safety devices and features for the Oak Ridge reactor by the Reactor Safeguard Committee of the Atomic Energy Commission. Outlines the difficulties encountered in detailed design and construction operations for the facility.
Date: October 1, 1948
Creator: Brookhaven National Laboratory
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Radioactive contamination in the environs of the Hanford Works for the period April - May - June, 1948

Description: This report summarizes the radioactive contamination measured at the Hanford Works and immediate plant areas for the quarter April, May, and June, 1948. Topics discussed are: Meteorology; airborne contamination; contamination in the Columbia and Yakima Rivers; and contamination in rain, drinking water, vegetation, and in Hanford Wastes.
Date: October 15, 1948
Creator: Singlevich, W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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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
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The Fission of thorium with Alpha Particles

Description: Soon after the discovery of fission, Meitner, Bretscher and Cook found differences in the decay of various chemical fractions separated from uranium irradiated with slow neutrons and thorium irradiated with fast neutrons respectively and suggested that a difference existed in the distribution of fission products in the two cases. In 1940, Turner suggested that the distribution in various modes of fission should be investigated. The fact that elements such as tin, cadmium, palladium, and silver … more
Date: October 15, 1948
Creator: Newton, Amos S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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234-5 Project specification letter 234-41, 235-41 (Supplement D), Chemical Development Laboratory

Description: This letter itemizes the miscellaneous equipment and supplies not previously specified which should be ordered to equip the 234-5 Chemical Development Laboratory. Equipment currently carried in store stock is not included in this list. The vendor is given only to identify the item or as a suggested source of supply.
Date: October 22, 1948
Creator: Work, J.B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Southwest Retort, Volume 1, Number 1, October 1948

Description: This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community. Published monthly during long academic semesters.
Date: October 1948
Creator: American Chemical Society. Dallas/Fort Worth Section.
Item Type: Refine your search to only Journal/Magazine/Newsletter
Partner: UNT Libraries
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Theoretical comparison of several methods of thrust augmentation for turbojet engines

Description: "A theoretical investigation of tail-pipe burning, water injection at the compressor inlet, combination tail-pipe burning plus water injection, bleedoff, and rocket-assist methods thrust augmentation for turbojet engines was made for an engine representative of those in current use. The effect of augmented liquid ratio on augmented thrust ratio and the effects of altitude and flight Mach number on the performance of various methods were determined. The additional take-off weight involved by the… more
Date: October 27, 1948
Creator: Hall, Eldon W. & Wilcox, E. Clinton
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Calculation of the Effect of Thrust-Axis Inclination on Propeller Disk Loading and Comparison With Flight Measurements

Description: Note presenting an analysis based on simple geometry of the effect of thrust-axis inclination on propeller disk loading. Calculations are in excellent agreement with available flight measurements, so that the analysis is indicated to be adequate for predicting the primary effects of inclination. Because of the possible large effects of wing and fuselage interference, flow angles at the propeller should be determined by survey for most accurate results.
Date: October 1948
Creator: Vogeley, A. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Comparison with experiment of several methods of predicting the lift of wings in subsonic compressible flow

Description: Report presenting several methods of predicing the lift of wings in subsonic compressible flow as compared with experimental results. Semiempirical formulas for predicting the subsonic effects of compressibility on the lift of wings were developed. Both experiments and calculations indicated a decrease in the variation of lift with Mach number for increasing sweep.
Date: October 1948
Creator: Murray, Harry E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An approximate determination of the lift of slender cylindrical bodies and wing-body combinations at very high supersonic speeds

Description: Report presenting a theory for very high supersonic flow as applied to determine a first approximation to the pressure distribution, lift, and drag due to lift for a slender cylindrical body of revolution and a wing-body combination. The method indicates that the flow effectively separates from the body before reaching the widest part of the cross section.
Date: October 1948
Creator: Ivey, H. Reese & Morrissette, Robert R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Investigation of the effects of a nacelle on the aerodynamic characteristics of a swept wing and the effects of sweep on a wing alone

Description: Report presenting an investigation conducted to determine the effects of a nacelle on the aerodynamic characteristics of a swept wing and effects of sweep on a wing alone. The aerodynamic characteristics were determined from force and pressure measurements and tuft studies at a range of Mach numbers and angles of attack. Results regarding the force characteristics, pressure distributions, and visual observation of flow characteristics are provided.
Date: October 1948
Creator: Hieser, Gerald & Whitcomb, Charles F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Approximate relations for hinge-moment parameters of control surfaces on swept wings at low Mach numbers

Description: Report presenting an approximate method of accounting for the effects of sweep as applied to previously determined equations for the hinge-moment parameters of control surfaces on unswept wings. Results regarding the comparison with experiment and limitations of the method are provided.
Date: October 1948
Creator: Toll, Thomas A. & Schneiter, Leslie E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Downwash and Wake Behind Untapered Wings of Various Aspect Ratios and Angles of Sweep

Description: Report presenting an investigation in the 7- by 10-foot tunnel to determine the downwash angles and the dynamic-pressure ratios behind wings of various sweep angles and aspect ratios, and the aerodynamic force characteristics of the wings. The wake center line behind the sweptforward wings was found to be located higher than the wake center line behind sweptback wings. Results regarding force data, surveys, and pictorial representation are provided.
Date: October 1948
Creator: Hoggard, H. Page, Jr. & Hagerman, John R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Investigation of boundary-layer Reynolds number for transition on an NACA 65(215)-114 airfoil in the Langley two-dimensional low-turbulence pressure tunnel

Description: A low-turbulence investigation was made of an aerodynamically smooth NACA airfoil with faired surfaces back to 37 percent chord to determine the magnitude of boundary-layer Reynolds number at various points of transition in flow along different airfoil surfaces. Values of the section drag coefficient were also obtained by means of the wake-survey method.
Date: October 1948
Creator: Braslow, Albert L. & Visconti, Fioravante
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Chordwise Pressure Distributions on a 12-Foot-Span Wing of NACA 66-Series Airfoil Sections Up to a Mach Number of 0.60

Description: "Chordwise pressure distributions are presented from experimental data obtained at six spanwise stations of a 12-foot-span wing incorporating NACA 66-series sections. The data shown were obtained at Mach numbers ranging from 0.20 to 0.60 and at angles of attack from -4 degrees to the stalling angle of attack" (p. 1).
Date: October 1948
Creator: Wall, Nancy E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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