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  Partner: UNT Libraries Government Documents Department
 Decade: 1950-1959
Sound measurements for five shrouded propellers at static conditions

Sound measurements for five shrouded propellers at static conditions

Date: April 1, 1950
Creator: Hubbard, Harvey H
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Sound propagation into the shadow zone in a temperature-stratified atmosphere above a plane boundary

Sound propagation into the shadow zone in a temperature-stratified atmosphere above a plane boundary

Date: October 1, 1955
Creator: Pridmore-Brown, David C & Ingard, Uno
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Source Strength Information for Shielding and Stack Effluent Calculations: a Standard Practices Guide

Source Strength Information for Shielding and Stack Effluent Calculations: a Standard Practices Guide

Date: October 3, 1958
Creator: Jones, L. H.
Description: Report presenting the curves and methods used "for determining gross fission product gamma energy in Mev/sec-watt, gross fission product beta decay in curies/sec-watt, delayed uranium fission neutrons in neutrons/sec-watt and N16 and N17 decay in photons/sec-cc of water" (p. 1).
Contributing Partner: UNT Libraries Government Documents Department
Soybean diseases.

Soybean diseases.

Date: March 1955
Creator: Johnson, Howard W. (Howard Wilfred), 1901-; Chamberlain, Donald W. (Donald William), 1905- & Lehman, Samuel George, 1887-
Description: Discusses a multitude of diseases that affect soybean crops, the adaptability of available resistant varieties, and a small amount of control measures.
Contributing Partner: UNT Libraries Government Documents Department
Soybean production for hay and beans.

Soybean production for hay and beans.

Date: September 1950
Creator: Morse, W. J. (William Joseph), b. 1884.; Cartter, J. L. (Jackson Leaphart), 1902- & Hartwig, E. E.
Description: Describes the production of soybean plants for both soybean-hay and soy beans themselves. Discusses storage and marketing practices.
Contributing Partner: UNT Libraries Government Documents Department
Soybeans for feed, food, and industrial products.

Soybeans for feed, food, and industrial products.

Date: February 1952
Creator: Morse, W. J. (William Joseph), b. 1884. & Cartter, J. L. (Jackson Leaphart), 1902-
Description: Describes the versatility of the soybean as a crop, including its use for pasturage, animal feed, hay and straw, soil improvement, industrial purposes, as oil, as fertilizer or insecticide, as a honey crop, and for human food products. Includes instructions for growing and processing soybeans. Also includes instructions for preparing soy milk and soy curd (tofu).
Contributing Partner: UNT Libraries Government Documents Department
Space heating rates for some premixed turbulent propane-air flames

Space heating rates for some premixed turbulent propane-air flames

Date: June 1, 1956
Creator: Fine, Burton D & Wagner, Paul
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Spallation-Fission Competition in Heaviest Elements; Helium IonInduced Reactions in Plutonium Isotopes

Spallation-Fission Competition in Heaviest Elements; Helium IonInduced Reactions in Plutonium Isotopes

Date: June 1, 1956
Creator: Glass, Richard A.; Carr, Robert J.; Cobble, James W. & Seaborg,Glenn T.
Description: Excitation functions have been determined for the spallation and fission reactions induced in plutonium isotopes by 20 to 50 Mev helium ions. The method employed consisted of cyclotron bombardments of plutonium oxide followed by the chemical isolation and alpha or beta counting of radioactive reaction products. Formation cross sections are given where possible for the curium and americium spallation products corresponding to ({alpha},n), ({alpha},2n), ({alpha},3n), ({alpha},4n), ({alpha}5n), ({alpha},p), ({alpha},pn or d), ({alpha},p2n or t), and ({alpha},p3n) reactions in Pu{sup 238} , Pu{sup 239}, and Pu{sup 242}. Fission yield curves and fission cross sections for Pu{sup 238} and Pu{sup 239} serve to define the characteristics of the ({alpha},f) reaction for plutonium isotopes. Chemical procedures are outlined for the separation of both spallation and fission product elements in a sequence of operations performed on the entire dissolved target.
Contributing Partner: UNT Libraries Government Documents Department
Spallation-Fission Competition in Heaviest Elements; HeliumIon-Induced Reactions in Uranium Isotopes

Spallation-Fission Competition in Heaviest Elements; HeliumIon-Induced Reactions in Uranium Isotopes

Date: November 1, 1957
Creator: Vandenbosch, R.; Thomas, T.D.; Vandenbosch, S.E.; Glass, R.A. & Seaborg, G.T.
Description: A radiochemical study of fission and spallation products produced by bombardment of U{sup 233}, U{sup 235}, and U{sup 238} with 18-46 Mev helium ions has been made. As in the case of similar studies using isotopes of plutonium as targets, most of the reaction cross section is taken up by fission. Also, the pronounced increase of the total cross section for ({alpha},xn) reactions with increasing mass number of the target that was observed for plutonium targets is observed for uranium targets.
Contributing Partner: UNT Libraries Government Documents Department
Spallation-Fission Competition in Heaviest Elements; HeliumIon-Induced Reactions in Uranium Isotopes

Spallation-Fission Competition in Heaviest Elements; HeliumIon-Induced Reactions in Uranium Isotopes

Date: January 1, 1958
Creator: Vandenbosch, R.; Thomas, T.D.; Vandenbosch, S.E.; Glass, R.A. & Seaborg, G.T.
Description: A radiochemical study of fission and spallation products produced by bombardment of U{sup 233}, U{sup 235}, and U{sup 238} with 18-46 Mev helium ions has been made. As in the case of similar studies using isotopes of plutonium as targets, most of the reaction cross section is taken up by fission. Also, the pronounced increase of the total cross section for ({alpha},xn) reactions with increasing mass number of the target that was observed for plutonium targets is observed for uranium targets.
Contributing Partner: UNT Libraries Government Documents Department
Spallation-Fission Competition in Heaviest Elements; TritonProduction

Spallation-Fission Competition in Heaviest Elements; TritonProduction

Date: March 1, 1957
Creator: Wade, William H.; Gonzalez-Vidal, Jose; Glass, Richard A. & Seaborg, Glenn T.
Description: Stacked f o i l s of Au{sup 197}, Th{sup 232}, and U{sup 238} were bombarded, i n a series of experiments, with 48-Mev helium ions, 24-Mev deuterons, and 32-Mev protons. Tritium from each f o i l was collected and then measured by a gas-counting technique. The qualitative r e s u l t s indicate t h a t high-energy t r i t o n s are emitted i n r e l a t i v e l y large abundance from a l l targets and with each of the bombarding p a r t i c l e s . Cross sections f o r t r i t o n production from fissionable U 238 and Th{sup 232} and from non-f i s s ionable Au{sup 197} are comparable. The integrated (ci,t) cross sections thus determined for and 9lk-1' are nearly the same a s the integrated cross sections f o r the '(,pZn)' reactions as determined by measuring the yield of t h e product heavy isotopes i n radiochemical experiments. A l l of the f a c t s axe consistent with a picture of emission of high-energy t r ...
Contributing Partner: UNT Libraries Government Documents Department
Span load distribution resulting from constant vertical acceleration for thin sweptback tapered wings with streamwise tips

Span load distribution resulting from constant vertical acceleration for thin sweptback tapered wings with streamwise tips

Date: January 1, 1954
Creator: Cole, Isabella J & Margolis, Kenneth
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Span load distributions resulting from angle of attack, rolling, and pitching for tapered sweptback wings with streamwise tips

Span load distributions resulting from angle of attack, rolling, and pitching for tapered sweptback wings with streamwise tips

Date: July 1, 1952
Creator: Martin, John C & Jeffreys, Isabella
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Span load distributions resulting from constant angle of attack, steady rolling velocity, steady pitching velocity, and constant vertical acceleration for tapered sweptback wings with streamwise tips subsonic leading edges and supersonic trailing edg

Span load distributions resulting from constant angle of attack, steady rolling velocity, steady pitching velocity, and constant vertical acceleration for tapered sweptback wings with streamwise tips subsonic leading edges and supersonic trailing edg

Date: December 1, 1952
Creator: Hannah, Margery E & Margolis, Kenneth
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The spanwise distribution of lift for minimum induced drag of wings having a given lift and a given bending moment

The spanwise distribution of lift for minimum induced drag of wings having a given lift and a given bending moment

Date: December 1, 1950
Creator: Jones, R. T.
Description: The problem of the minimum induced drag of wings having a given lift and a given span is extended to include cases in which the bending moment to be supported by the wing is also given. The theory is limited to lifting surfaces traveling at subsonic speeds. It is found that the required shape of the downwash distribution can be obtained in an elementary way which is applicable to a variety of such problems. Expressions for the minimum drag and the corresponding spanwise load distributions are also given for the case in which the lift and the bending moment about the wing root are fixed while the span is allowed to vary. The results show a 15-percent reduction of the induced drag with a 15-percent increase in span as compared with results for an elliptically loaded wing having the same total lift and bending moment.
Contributing Partner: UNT Libraries Government Documents Department
The spanwise distribution of lift for minimum induced drag of wings having a given lift and a given bending moment

The spanwise distribution of lift for minimum induced drag of wings having a given lift and a given bending moment

Date: December 1, 1950
Creator: Jones, Robert Thomas
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Spanwise loading for wings and control surfaces of low aspect ratio

Spanwise loading for wings and control surfaces of low aspect ratio

Date: January 1, 1950
Creator: Deyoung, John
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Spark ignition of flowing gases

Spark ignition of flowing gases

Date: January 1, 1956
Creator: Swett, Clyde C , Jr
Description: Research conducted at the NACA Lewis Laboratory on ignition of flowing gases by means of long-duration discharges is summarized and analyzed. Data showing the effect of a flowing combustible mixture on the physical and electrical characteristics of spark discharges and data showing the effects of variables on the spark energy required for ignition that has been developed to predict the effect of many of the gas-stream and spark variables is described and applied to a limited amount of experimental data.
Contributing Partner: UNT Libraries Government Documents Department
Spark Ignition of Flowing Gases. 2: Effect of Electrode Parameters on Energy Required to Ignite a Propane-Air Mixture

Spark Ignition of Flowing Gases. 2: Effect of Electrode Parameters on Energy Required to Ignite a Propane-Air Mixture

Date: December 18, 1951
Creator: Swett, Clyde. C., Jr.
Description: Research was conducted to determine the effect of the electrode parameters of spacing, configuration, and material' on the energy required for ignition of a flowing propane-air mixture. In addition, the data were used to indicate the energy distribution along the spark length and to confirm previous observations concerning the effect of spark duration on ignition energy requirements. The data were obtained with a mixture at a fuel-air ratio of 0.0835 (by weight), a pressure of 3 inches of mercury absolute, a temperature of 80 F, and a mixture velocity of 5 feet per second. Results showed that the energy required for ignition decreased as the electrode spacing was increased; a minimum energy occurred at. a spacing of 0.65 inch for large electrodes. For small electrodes, the spacing for minimum energy was not sharply defined. Small-diameter electrodes required less energy than large-diameter electrodes if the spacing was less than the optimum distance of 0.65 inch; at a spacing equal to the optimum distance, no difference was noted. Significant effects of electrode material on ignition energy were ascribed to differences in the type of spark discharges produced; glow discharges required higher energy than the arc-glow discharges. With pure glow discharges, the ignition ...
Contributing Partner: UNT Libraries Government Documents Department
Spark ignition of flowing gases III : effect of turbulence promoter on energy required to ignite a propane-air mixture

Spark ignition of flowing gases III : effect of turbulence promoter on energy required to ignite a propane-air mixture

Date: January 14, 1953
Creator: Swett, Clyde C , Jr & Donlon, Richard H
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Spark ignition of flowing gases V : application of fuel-air-ratio and initial-temperature data to ignition theory

Spark ignition of flowing gases V : application of fuel-air-ratio and initial-temperature data to ignition theory

Date: November 1, 1955
Creator: Swett, Clyde C , Jr
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Spatial Burnout in Water Reactors with Nonuniform Startup Distributions of Uranium and Boron

Spatial Burnout in Water Reactors with Nonuniform Startup Distributions of Uranium and Boron

Date: March 23, 1955
Creator: Fox, Thomas A. & Bogart, Donald
Description: Spatial burnout calculations have been made of two types of water moderated cylindrical reactor using boron as a burnable poison to increase reactor life. Specific reactors studied were a version of the Submarine Advanced Reactor (sAR) and a supercritical water reactor (SCW) . Burnout characteristics such as reactivity excursion, neutron-flux and heat-generation distributions, and uranium and boron distributions have been determined for core lives corresponding to a burnup of approximately 7 kilograms of fully enriched uranium. All reactivity calculations have been based on the actual nonuniform distribution of absorbers existing during intervals of core life. Spatial burnout of uranium and boron and spatial build-up of fission products and equilibrium xenon have been- considered. Calculations were performed on the NACA nuclear reactor simulator using two-group diff'usion theory. The following reactor burnout characteristics have been demonstrated: 1. A significantly lower excursion in reactivity during core life may be obtained by nonuniform rather than uniform startup distribution of uranium. Results for SCW with uranium distributed to provide constant radial heat generation and a core life corresponding to a uranium burnup of 7 kilograms indicated a maximum excursion in reactivity of 2.5 percent. This compared to a maximum excursion of 4.2 percent obtained for ...
Contributing Partner: UNT Libraries Government Documents Department
Special bodies added on a wing to reduce shock induced boundary-layer separation at high subsonic speeds

Special bodies added on a wing to reduce shock induced boundary-layer separation at high subsonic speeds

Date: June 1, 1958
Creator: Whitcomb, Richard T
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Special Equipment in the Coal-Hydrogenation Demonstration Plant

Special Equipment in the Coal-Hydrogenation Demonstration Plant

Date: January 1950
Creator: Markovits, J. A.; Braun, K. C.; Donovan, J. T. & Sandaker, J. H.
Description: Report issued by the Bureau of Mines over the equipment used in coal hydrogenation demonstration plants. Detailed descriptions of the equipment and machinery are presented. This report includes tables, illustrations, and photographs.
Contributing Partner: UNT Libraries Government Documents Department