Technical Report Archive & Image Library (TRAIL) - 5,422 Matching Results

Search Results

prev Results: 1369 - 1392 next
open access

An Electrical Pass-Through for Clean, High Vacuum Use

Description: This report describes the method and research that led to the development of a "new type of mechanical seal for a high-voltage, vacuum pass-through...for use in a general utility 60º sector mass spectrometer." (From introductory paragraph)
Date: 1960
Creator: Jackson, Don M.; Wells, Garry & Soseman, Donald
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electrical Properties of the Tungsten Bronzes

Description: From abstract: "The electrical resistivity of NaxWO3, LixWO3, and KxWO3 has been measured at 300°K. The range of x-values was 0.25 < x < 0.9. All resistivities were characteristic of a metal and lie on a single curve. An extrapolation of the conductivity curve to zero conductivity indicated that the tungsten bronzes should be semiconductors for x < 0.25. The resistivities that have been measured for tungsten bronzes with x < 0.25 showed semiconducting behavior. The resistivity of LixWO3 exhibit… more
Date: March 21, 1962
Creator: Shanks, H. R.; Sidles, Paul Howard & Danielson, G. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electrical Resistance Measurements of an Irradiated Uranium Sample

Description: The results of electrical resistance measurements have been used as a means of following changes occurring in metals due to irradiation. The electrical conductivity is sensitive to changes in composition and to cold-work or structure damage. In an anisotropic metal, such as uranium, the director of measurement also influences to some extent the values obtained. For these reasons it is essential to use the same material, and if possible the same piece of material, in comparing the electrical … more
Date: June 8, 1953
Creator: Kemper, Robert S. & Boyd, C. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Electrical Resistivity of Liquid Sodium and Dilute Sodium Alloys. Final Report

Description: "The factors of atomic size, ion core potential, and charge, which contribute to the increment in electrical resistivity produced by solutes in metallic solutions, were separated and experimentally evaluated in liquid sodium. The results are expressed in a semi-empirical relationship which defines the increment in resistivity of a monovalent solution as the sum of the fractional difference in atomic volume of solute and solvent and the difference in atomic number of Na and the solutes Li, K, Cs… more
Date: October 1959
Creator: Freedman, James R. & Robertson, W. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electrical Resistivity of Rare-Earth Alloys

Description: From abstract: "Resistivities of solid solution alloys in the systems Gd-Lu, Tb-Lu, Gd-Er, and Y-Lu were measured from 4.2-320°K to determine the behavior of the resistivity in alloy systems with magnetic phenomena arising from localized magnetic moments. A large contribution to the residual resistivity is caused by the random distribution of these localized moments through the lattice. An analysis of the lattice resistivity of the metals shows large variations across the heavy rare-earth serie… more
Date: June 5, 1962
Creator: Smidt, F. A. & Daane, A. H. (Adrian Hill), 1919-
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An Electrocapillary Softening Effect in Metals

Description: It appeared of interest to investigate the functional relationship which the authors observed between the hardness and the difference of potential for various pure metals over a fairly wide range of potentials, including the electrocapillary maxima.
Date: unknown
Creator: Venstrom, E. K. & Rebinder, P. A., (Petr Aleksandrovich), 1898-1972
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electrochemical and Chemical Behaviour of Polonium in Tartaric Acid Solution

Description: The method for studying the electrochemistry of the radioelements has a great advantage which permits the observation of the chemical behaviour of these elements in a continuous and direct manner in a different media and comparison of the different reactions.
Date: unknown
Creator: Haissinsky, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An Electrochemical pH-STAT

Description: An apparatus has been developed which controls automatically the acidity of unbuffered solutions in the region from pH 4 to 10. A potentiostat is used to control the potential of an inert electrode on which the hydrogen gas-hydrogen ion reaction occurs in a solution saturated with hydrogen gas. The inert electrode acts as both a sensing element and a regulating electrode for the control of acidity. Current from the potentiostat passes through the inert electrode and an auxiliary polarizing elec… more
Date: October 1963
Creator: Posey, F. A. (Franz Adrian), 1930-; Morozumi, T. & Kelly, E. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electrochemical Research on Polonium

Description: The author reviews briefly the present state of several important problems of the electrochemistry and the chemistry of polonium; the position of this element in the electromotive series, the nature of the ions and the electrolytic deposits which they form, the valences, the nature of the precipitates of Po that is observed in solutions which are feebly acid or feebly alkaline.
Date: unknown
Creator: Haissinsky, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Electrochemical Theory of Smelting and Related Reactions

Description: In this paper we are concerned with the potentials and electrical currents flowing at an interface between two phases as a result of chemical reactions which promote selective ion migration. Although our immediate concern is an explanation of the available results on smelting, a sufficiently broad understand requires that we go far beyond this limited results and bring together the findings from many related fields. We first must consider the diffusion of particles across an interface, which fo… more
Date: November 1959
Creator: Hemptinne, Xavier de & Eyring, Henry, 1901-1981
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electrodecontamination of Stainless Steel

Description: Abstract: "In experimental studies, decontamination factors of 1000 to 3000 were obtained by electrostripping deposited radioactivity from stainless steel surfaces, used as the anode, in 2% sulfuric acid at current densities as low as 0.01 amp/in.-2. Stainless steel cathodes were used. The method was successfully applied to contaminated equipment."
Date: November 1, 1954
Creator: Bennett, M. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electrodeposition of Aluminum and Zirconium on Uranium

Description: Technical report outlining a method for the electrodeposition of adherent deposits of both aluminum and zirconium on uranium. Report finds that current efficiencies are good for aluminum deposition but low for the zirconium baths. [From Abstract]
Date: October 12, 1950
Creator: Lietzke, M. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

The Electrolysis of Uranium Halides

Description: The electrolysis of tetra- and tri-halides of uranium in fused salt systems at temperatures from 700°-900° C has been investigated. Serious losses are caused by reaction with atmospheric oxygen, refractories and electrode materials.
Date: unknown
Creator: Eastman, E. D. (Ermon Dwight), 1891-1945; Webster, R. A. & Fontana, B. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electrolytic Production of Uranium from Solutions of its Tribromide in Fused Salts

Description: Abstract. the electrodeposition of uranium metal, in the form of tree-like deposits, from molten strontium halide baths is described. Under the best conditions studied, approximately 40% recovery is attained. Freedom from side-reactions of the reduced uranium with anode products and/or refractory materials, and high cathode current densities appear to be essential to the success of the process. the refining of uranium under similar conditions appears to occur quite readily, with approximatel… more
Date: August 15, 1944
Creator: Webster, Richard A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electrolytic Reduction of Thorium Oxide

Description: From abstract: "Thorium metal has been produced by electrolytic reduction of thorium oxide. Reduction was accomplished in both a KF-ThF4 melt and a NaCl-KCl-ThCl4 melt. A flowsheet for the complete process using the fused fluoride system is proposed."
Date: February 1957
Creator: Meyer, Leon Herbert, 1926-
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electrolytic Reduction of Uranyl Ion

Description: From introduction: "Due to the hydrogen overvoltage at the surface of a mercury cathode, uranium solutions is hydrochloric acid may be reduced not only to the tetravalent state, but until considerable trivalent uranium is formed. Other metallic ions act as oxidation-reduction catalysts as well as being reduced themselves. The following paper is a study of the various reactions taking place in solution and at the surface of the cathode."
Date: May 27, 1946
Creator: Nichols, Ambrose R., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electrolytic Separation of Zirconium

Description: The authors began their investigation of electrolytic separation of zirconium iwht a repetition of the electrolysis of aqueous zirconium sulfate. The results were a highly dispersed black powder which are contaminated by oxides, carbides, nitrides, and other admixtures.
Date: unknown
Creator: Plotnikov, V. A. & Gitman, E. B. -- (Evgenii︠a︡ Borisovna)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electromagnetic-Acoustic-Transducer/Synthetic-Aperture System for Thick-Weld Inspection

Description: Abstract: This report describes a system based on electromagnetic-acoustic transducers (EMATs) as an approach to automated nondestructive evaluation of thick weldments (>25 mm). Good signal-to-noise ratios, often a problem with EMATs, were possibTe through careful design of the transducers and associated electronic circuits and the use of signal averaging. At 454 kHz, the transducers produce shear-horizontal waves of approximately 7-mm wavelength in steel. The long wavelength permits determinat… more
Date: 1984
Creator: Fortunko, C. M.; Schramm, R. E.; Moulder, J. C. & McColskey, J. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electromagnetic Compatibility and Interference Metrology

Description: From abstract: The material included in this report is intended for a short course on electromagnetic compatibility/interference (EMC/EMI) metrology to be offered jointly by the staff of the Fields Characterization Group (723.03) and the Interference Characterization Group (723.04) of the Electromagnetic Fields Division (723). The purpose of this short course is to present a review of some of the radiated EMC/EMI measurement methods, to which the National Bureau of Standards (NBS) at Boulder, C… more
Date: July 1986
Creator: Ma, Mark T. & Kanda, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electromagnetic Flowmeter

Description: The following report documents progress the development of an electromagnetic flowmeter that measures the flow of half alloy, covering the period for March 1 to November 30, 1947.
Date: 1952
Creator: Barnes, A. H.; Whitham, G. K. & Smith, F. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electromagnetic Research Division Quarterly Progress Report: Part I for Period Ending December 31, 1951

Description: From abstract: "Operation of the 86-inch cyclotron has been continuous except for a three-day interruption caused by a water leak inside the vacuum chamber; monthly output has averaged over 210,000 [mu]a-hr; the average continuous (168-hour week) beam power has been approximately 5.5 kw; and the energy of the beam has been determined to be ~19.4 Mev. No changes due to radiation damage have been detected in Inconel tubes containing UF4-NaF-KF eutectic which were irradited in the 96-inch cyclotro… more
Date: January 15, 1952
Creator: Livingston, Robert S. & Howard, F. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electromagnetic Research Division Quarterly Progress Report, Part I for Period Ending June 30, 1952

Description: From abstract: "On the 86-inch cyclotron a 41-kw beam has been calorimetered at a net ion loading efficiency of 40%; the average proton current was 1.85 ma at 22.5 Mev. Practical specific yields have been determined for (p,2n) reactions on zinc and bismuth. The investigation of products of proton-induced fission of uranium has been continued and new techniques are being used in measuring angular distribution of reaction products. The 63-inch heavy particle cyclotron is now in operation; N+++ pa… more
Date: November 14, 1952
Creator: Livingston, Robert S. & Howard, F. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electromagnetic Research Division Quarterly Progress Report, Part I for Period Ending June 30, 1952

Description: From abstract: "On the 86-inch cyclotron a 41-kw beam has been calorimetered at a net ion loading efficiency of 40%; the average proton current was 1.85 ma at 22.5 Mev. Practical specific yields have been determined for (p,2n) reactions on zinc and bismuth. The investigation of products of proton-induced fission of uranium has been continued and new techniques are being used in measuring angular distribution of reaction products. The 63-inch heavy particle cyclotron is now in operation; N+++ pa… more
Date: March 7, 1957
Creator: Livingston, Robert S. & Howard, F. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen