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Lettuce growing in greenhouses.

Description: Describes different types of greenhouses for lettuce-growing; provides instructions for growing lettuce in greenhouses.
Date: May 1949
Creator: Thompson, Ross C. (Ross Calvin), 1896-
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
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Health problems associated with investigation of off-plant uranium rolling. Rough draft

Description: The following is a report of a trip to the Simonds Saw & Steel Company, Lockport, New York, on May 3, 1949. The purpose of the visit was to observe the various operations involved in the rolling of uranium rods at this plant and health problems associated with the rolling operations.
Date: May 13, 1949
Creator: Adley, F. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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CHEMISTRY DIVISION, SECTION C-1 SUMMARY REPORT FOR JANUARY, FEBRUARY, AND MARCH 1949

Description: Physical and inorganic Chemistry. Studies are reported on: volatile complexes of ZrCl/sub 4/ and HfCl/sub 4/ with POCl/sub 3/; reaction of UCl/sub 4/ with LiAlH/sub 4/; preparation and properties of metal uranates and polyuranates; heats of solution of UO/sub 2/(NO/sub 3/)/sub 2/ hydrates; absorption spectra of Np in HClO/sub 4/, and separation of Np and Pu chlorides by a flow method. Process Chemistry. Extraction of Th from Mailiackrodt U raffinate was studied. Nuclear Chemistry aad Radiochemi… more
Date: May 12, 1949
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Southwest Retort, Volume 1, Number 8, May 1949

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: May 1949
Creator: American Chemical Society. Dallas/Fort Worth Section.
Item Type: Refine your search to only Journal/Magazine/Newsletter
Partner: UNT Libraries
open access

Biaxial Fatigue Strength of 24S-T Aluminum Alloy

Description: Note presenting an investigation to determine the fatigue-strength values for 24S-T aluminum alloy when subjected to various ratios of biaxial stresses. The stresses considered were both tensile. The results indicated that uniaxial fatigue-strength values in the longitudinal direction cannot be used to predict the fatigue strength, and that biaxial fatigue strength may be as low as 50 percent of the uniaxial fatigue strength.
Date: May 1949
Creator: Marin, Joseph & Shelson, William
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Critical Axial-Compressive Stress of a Curved Rectangular Panel With a Central Longitudinal Stiffener

Description: "A theoretical solution is presented for the critical axial-compressive stress of a simply supported curved rectangular panel having a central longitudinal stiffener offering no torsional restraint. The results are presented in the form of computed curves and tables. Because a panel of moderate or large curvature buckles in compression at a stress lower than the theoretical value, a method is suggested to aid in determining the critical stress for use in design" (p. 1).
Date: May 1949
Creator: Schildcrout, Murry & Stein, Manuel
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Comparison of Pitching Moments Obtained During Seaplane Landings With Values Predicted by Hydrodynamic Impact Theory

Description: Report presenting an investigation of pitching moments and center-of-pressure locations obtained from a landing investigation in smooth water of a conventional flying boat as compared to values predicted by general hydrodynamic impact theory. Landings were generally moderate and covered as wide a range of trim and velocities as practical. Results regarding the center of pressure and pitching moments are provided.
Date: May 1949
Creator: Haines, Gilbert A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Oxidation Characteristics of Molybdenum Disulfide and Effect of Such Oxidation on Its Role as a Solid-Film Lubricant

Description: Note presenting an investigation conducted to determine the oxidation characteristics of molybdenum disulfide and to determine the effect of such oxidation on its role as a solid-film lubricant. A coating of molybdenum disulfide serving as a high-temperature solid-film lubricant maintained low coefficient-of-friction values during its oxidation as long as an effective subfilm of the molybdenum disulfide remained.
Date: May 1949
Creator: Godfrey, Douglas & Nelson, Erva C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Compressive Buckling of Flat Rectangular Metalite Type Sandwich Plates With Simply Supported Loaded Edges and Clamped Unloaded Edges

Description: Note presenting a theoretical solution for the problem of the compressive buckling of flat rectangular Metalite type sandwich plates with simply supported loaded edges and clamped unloaded edges. The solution is based on the general small-deflection theory for flat sandwich plates developed in a previous report. Results regarding stability orientation and buckling curves, comparison with approximate solution, correction for plasticity, and comparison of theory and experiment are provided.
Date: May 1949
Creator: Seide, Paul
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An Electric Thrust Meter Suitable for Flight Investigation of Propellers

Description: A lightweight instrument that utilizes resistance-wire electric strain gases to measure propeller-shaft thrust has been developed. A wind-tunnel investigation on a propeller installed, on a single-engine pursuit airplane showed that the instrument gave a reliable indication of propeller-shaft thrust to an accuracy of +/-2 percent within its calibrated range. No attempt was made to determine the relation of indicated shaft thrust to net propeller thrust.
Date: May 9, 1949
Creator: Perkins, Porter J., Jr. & Millenson, Morton B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An Approximate Method for Estimating the Incompressible Laminar Boundary-Layer Characteristics on a Flat Plate in Slipping Flow

Description: Memorandum presenting an approximate method for the estimation of the properties of the incompressible laminar boundary layer on a flat plate in the slip-flow region using Karman's momentum method. At equivalent stations, the total thickness and the skin friction of a slipping boundary layer are less than that of the normal boundary layer at the same Reynolds number.
Date: May 2, 1949
Creator: Donaldson, Coleman duP.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Altitude-wind-tunnel investigation of AN-F-58 fuel in experimental version of J47 turbojet engine

Description: An altitude-wind-tunnel investigation of the performance of AN-F-58 and AN-F-32 fuels in an experimental turbojet engine was conducted over a range of simulated altitudes and flight Mach numbers. Combustion efficiencies obtained with AN-F-58 and AN-F-32 fuels were approximately equal. The minimum-speed altitude operational limit was essentially the same with either AN-F-58 or AN-F-32 fuel. Starting characteristics of the two fuels were approximately the same at low wind milling speeds. Visual o… more
Date: May 2, 1949
Creator: Meyer, Carl L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Experimental investigation of hot-gas bleedback for ice protection of turbojet engines 2: nacelle with long straight air inlet

Description: Report presenting aerodynamic and icing investigations conducted in the icing research tunnel on a model of a turbojet-engine nacelle with a long straight air inlet in order to provide basic design criteria for hot-gas blowback systems. The most uniform temperature distribution was obtained with a bleedback of 4.4 percent at a gas temperature of 1000 degrees Fahrenheit and resulted in an average dry-air-temperature rise of 46 degrees Fahrenheit.
Date: May 26, 1949
Creator: Callaghan, Edmund E. & Ruggeri, Robert S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Pressure-Distribution Data for the NACA 64(Sub 1)-012 and 64(Sub 1)A012 Airfoils at High Subsonic Mach Numbers

Description: "Pressure-distribution data of the NACA 64(sub 1)-012 and 64(sub 1)A012 airfoils have been analyzed to determine the effects of increasing the trailing-edge angle from 9 to 14 degrees. The primary effect of increasing the trailing-edge angle was to decrease the loading over the rear portion of the airfoil under lifting conditions. The differences in trailing-edge load increased with Mach number and lift coefficient" (p. 1).
Date: May 6, 1949
Creator: Humphreys, Milton D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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