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EXTRATERRESTRIAL LIFE: SOME ORGANIC CONSTITUENTS OF METEORITES ANDTHEIR SIGNIFICANCE FOR POSSIBLE EXTRATERRESTRIAL BIOLOGICALEVOLUTION

Description: In order to decide the value and type of information to be obtained from outer space with regard to its pertinence for the evolution of life, a brief review is presented of the current status of our thinking on the origin of life on earth. This points up the particular kinds of chemicals whose presence, or absence, on other astral bodies might be significant. Heretofore, the only data available are the result of telescopic spectroscopy. We report here information indicating the presence in mete… more
Date: December 7, 1959
Creator: Calvin, Melvin & Vaughn, Susan K.
Partner: UNT Libraries Government Documents Department
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PHASE SHIFTS IN pi+ -p SCATTERING AT 310 Mev

Description: In an experimental program recently completed at the 184-inch synchrocyclotron in Berkeley, data were obtained on elastic {pi}{sup +}-p scattering at a laboratory energy of 310 Mev. Quantities measured were the differential cross section, the total cross section, and the polarization of the recoil protons as a function of center-of-mass angle. We have analyzed the data in terms of S, P, and D waves and have obtained only one acceptable solution. The resultant set of phase shifts is of the Fermi… more
Date: November 18, 1959
Creator: Foote, James H.; Chamberlain, Owen; Rogers, Ernest H.; Steiner,Herbert M.; Wiegand, Clyde & Ypsilantis, Tom
Partner: UNT Libraries Government Documents Department
open access

THE PHOTOVOLTAIC EFFECT AND PHOTOCONDUCTIVITY IN LAMINATED ORGANICSYSTEMS

Description: As a result of a wide variety of studies on photosynthesis in living plants and plant fragments, together with the development of photosensitive, photovoltaic junctions in inorganic crystals and the discovery and exploration of semiconduction in organic molecular substances, a suggestion has been made that the primary quantum conversion process in photosynthetic tissues involves the creation and separation of charge to opposite sides of an asymmetrically-constructed lamina, followed by the trap… more
Date: September 1, 1958
Creator: Kearns, David & Calvin, Melvin
Partner: UNT Libraries Government Documents Department
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Graphite radiation damage as a reactor operational problem

Description: Radiation Damage to the graphite moderator has played an important role in the history of reactor operation at Hanford. The operational problems, potential and real, which result from dimensional instability, stored energy, and gasification, as well as the solutions to these problems are discussed. The key to the graphite problems is operating temperature and its control. At present, stack expansion remains in the fringe regions of the original reactors, which coupled with the contraction of th… more
Date: April 14, 1958
Creator: Curtiss, D. H.
Partner: UNT Libraries Government Documents Department
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Pyrometallurgical Purification of Plutonium Reactor Fuels

Description: Pyrometallurgical methods studied are liquation, self-drossing and filtration, slagging by the addition of oxide, carbide, or halide, liquid metal extraction, complete conversion to halide, followed by filtration and selective reduction of the plutonium, and electrorefininng. Experimental techniques and results are presented for each method. (auth)
Date: June 1, 1958
Creator: Leary, J.A.; Benz, R.; Bowersox, D.F.; Bjorklund, C.W.; Johnson, K.W.R.; Maraman, W.J. et al.
Partner: UNT Libraries Government Documents Department
open access

Ion exchange properties of hydrous oxides

Description: The large class of amorphous insoluble hydrous oxides has interesting ion exchange properties. These materials have high capacities and suitable exchange rates and may therefore be used in packed columns in typical chromatographic (ion exchange) manner. Hydrous oxides may exhibit either cation exchange or anion exchange properties, or both. The type of adsorption depends on the element on which the oxide is based, on the acidity of the medium and, to some extent, on the ion adsorbed. Though som… more
Date: June 1, 1958
Creator: Kraus, K. A.; Phillips, H. O.; Carlson, T. A. & Johnson, J. S.
Partner: UNT Libraries Government Documents Department
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Radiochemical Studies of the Fast Neutron Fission of U$sup 235$ and U$sup 238$

Description: Radiochemical studies of the fast neutron fission of U/sup 235/ and U/sup 238/ have been made in the mass region beyond mass 143 with two neutron energy distributions. These studies provide measurements of the relative fission yields of several chains in the rare earth group in fission of U/sup 235/ and U/sup 238/ caused by neutrons with an energy distribution very close to unmoderated fission neutrons and by neutrons with an energy distribution peaked at 8 Mev. The increased contribution of ve… more
Date: June 1, 1958
Creator: Bunney, L. R.; Scadden, E. M.; Abriam, J. O. & Ballou, N. E.
Partner: UNT Libraries Government Documents Department
open access

TEST OF A DIRECT CYCLE NUCLEAR TURBOJET SYSTEM

Description: This paper discusses research and development effort on a direct-cycle air-cooled nuclear reactor and propulsion equipment. The reactor experiment was designed, constructed, and tested during the period 1953 to 1956 to prove the feasibility of operating a turbojet engine from the heat produced by an air-cooled reactor. A description is given of the reactor, turbomachinery, shielding, control system, and associated equipment used in the first propulsion system test which was run in 1956. The sys… more
Date: June 1, 1958
Creator: Shoults, D. R.
Partner: UNT Libraries Government Documents Department
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A Wide Bandwidth Telemetry System

Description: This paper will describe a telemetry system which has a bandwidth of 250 mgacples, the uses to which it has been put and possible future uses.
Date: August 1, 1956
Creator: Henry, David E & Glass, R. E.
Partner: UNT Libraries Government Documents Department
open access

SPECIAL HEAT TRANSFER PHENOMENA FOR SUPERCRITICAL FLUIDS

Description: Present-day knowledge concerning the molecular structure of supercritical fluids is briefly reviewed. It is shown that liquid-like and gas-like phases may coexist at supercritical pressures, although they may not be in equllibrium with each other. it is postulated that on the basis of the coexistence of these two phases a "boiling-like" phenomenon may provide the mechanism of heat transfer to supercritical fluids at high heat fluxes and certain other conditions. An unusual mode of hea… more
Date: January 1, 1956
Creator: Goldmann, K
Partner: UNT Libraries Government Documents Department
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Determination of Hafnium and Rare Earths in Aluminum Alloys

Description: Procedures are described for both a titrimetric and a gravimetric determination of hafnium in aluminum -hafnium alloys. The gravimetric procedure is used if the hafnium is to be recovered; otherwise, the titrimetric procedure is preferred. The sample is dissolved in aqua regia. Any undissolved hafnium is taken into solution via pyrosulfate fusion. The hafnium is separated from the aluminum and contaminants in the aluminum by precipitation as the mandelate. In the gravimetric procedure the hafni… more
Date: January 1, 1959
Creator: Sikes, J. H.; Wade, M. A. & Yamamura, S. S.
Partner: UNT Libraries Government Documents Department
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The Bevatron

Description: No Description Available.
Date: November 8, 1958
Creator: Lofgren, Edward J.
Partner: UNT Libraries Government Documents Department
open access

Fast Electronics in High-Energy Physics

Description: A brief review of fast electronics is given, leading up to the present state of the art. Cherenkov counters in high-energy physics are discussed, including an example of a velocity-selecting Cherenkov counter. An electronic device to aid in aligning external beams from high-energy accelerators is described. A scintillation-counter matrix to identify bubble chamber tracks is discussed. Some remarks on the future development of electronics in high-energy physics experiments are included.
Date: August 8, 1958
Creator: Weigand, Clyde
Partner: UNT Libraries Government Documents Department
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Meeting XI Bevatron Research Conference

Description: It will be desirable to have a general purpose bending magnet available for use with the Bevatron. The design discussed, while tentative, is believed to incorporate most of the desired properties for use with the external beam.
Date: January 12, 1954
Creator: Wenzel, William A.
Partner: UNT Libraries Government Documents Department
open access

A Separated 1.17-Bev/c K- Meson Beam

Description: This report describes the design and testing of a 1.17-Bev/c separated K{sup -} beam designed in the fall of 1958 in connection with a 15-in. hydrogen bubble chamber experiment. At the target the K{sup -}/{pi}{sup -} ratio was 1/140. At the chamber, 4.0 K{sup -}-meson decay lengths from the target, and after two stages of electromagnetic separation, the K{sup -}/{pi}{sup -} ratio was 12.5, corresponding to a total pion suppression by a factor of about 10{sup 5}. The K{sup -} flux at the chamber… more
Date: December 30, 1959
Creator: Eberhard, Phillippe; Good, Myron L. & Ticho, Harold K.
Partner: UNT Libraries Government Documents Department
open access

A Separated 1.17-Bev/c K- Meson Beam

Description: This report describes the design and testing of a 1.17-Bev/c separated K{sup -} beam designed in the fall of 1958 in connection with a 15-in. hydrogen bubble chamber experiment. At the target the K{sup -}/{pi}{sup -} ratio was 1/140. At the chamber, after two stages of electromagnetic separation and 4.0 K{sup -}-meson decay lengths, the K{sup -}/{pi}{sup -} ratio was 12.5, corresponding to a total pion suppression by a factor of about 10{sup 5}. The K flux at the chamber was 0.87 K{sup -} per 1… more
Date: August 25, 1959
Creator: Eberhard, Phillippe, Good, Myron L. & Ticho, Harold K.
Partner: UNT Libraries Government Documents Department
open access

Fused-Salt Heat Transfer

Description: This paper presents, in two parts, a general discussion of fused-salt heat transfer. The first part is a report on current experimental results with three new salts - an alkali metal-base fluoride, a zirconium-base fluoride, and an alkali metal nitrate-nitrite mixture known as 'HTS'. In the second part fused salts are compared with liquid metals on the basis of their heat transfer effectiveness as reactor coolants. An analysis is presented for a general solid fuel-element reactor whic… more
Date: November 1, 1956
Creator: Hoffman, Herbert W.
Partner: UNT Libraries Government Documents Department
open access

Minutes of third meeting of committee on use of Nevada Test Site

Description: The Nevada Test Site (NTS) Use Committee met Tuesday morning, May 28, 1957, at Mercury, Nevada. This document provides a summary of the meeting.
Date: May 28, 1957
Creator: Lindquist, C. L.
Partner: UNT Libraries Government Documents Department
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