Technical Report Archive & Image Library (TRAIL) - 819 Matching Results

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Determination on Neutron Density With Bismuth Foils : Final Report - Problem Assignment 131 - X21P

Description: It is usual to determine the density of neutrons by using foils of metals which become radioactive as a result of bombardment in the region under investigation. From the rate of disintegration of the newly formed radioactive element the number of neutrons absorbed can be calculated. By use of the capture cross section of the element of which the foil is composed the density of the neutrons can then be computed. By counting the alpha particles from a bismuth foil of known weight after exposure t… more
Date: May 30, 1944
Creator: Curtiss, Leon Francis, 1895-
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of Equipment for the Purification of Mercury by Distillation

Description: Abstract: "An investigation of the mercury salvage program has resulted in the development of an improved high compacity type of distillation apparatus. The still, electrically heated and essentially automatic in its operation, will produce at a rate greater than 75 pounds per hour and develop a product 99.99% pure or better. This still will handle the lowest grade crude of amalgam that can pass through the feed lines and will continue to develop a pure prodcut for comparatively long periods of… more
Date: May 26, 1945
Creator: Lee, J. E. & Susano, C. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Diameter Measurements of Slugs Before and After Prolonged Heat Treatment

Description: Abstract: "Diameter measurements of 25 slugs taken before and after a prolonged heat treatment showed no evidence of differences that would indicate blistering. The average effects of the treatment was different for the various slugs. Large differences in diameter measurements between slugs. Large differences in diameter between slugs and significant differences between indices and positions were found."
Date: February 16, 1948
Creator: Bennett, Carl A. & Lane, J. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Diamond Drilling at the Boston Consolidated Copper Mine, Salt Lake County, Utah

Description: Report issued by the Bureau of Mines over diamond-drilling projects in Salt Lake County. The geology, physical features, and history of the mines are presented. This report includes tables, maps, illustrations, and photographs.
Date: November 1949
Creator: Jones, Robert L. & Wilson, Stephen R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Diatomites of the Pacific Northwest as Filter-Aids

Description: From Introduction Purpose of Investigation: "To determine some of the physical and chemical properties of known Pacific Northwest diatomites, the present investigation was started in 1938 by the Bureau of Mines in cooperation with the College of Mines, University of Washington.
Date: 1944
Creator: Skinner, Kenneth G.; Dammann, Arthur A.; Swift, Roy E.; Eyerly, George B. & Shuck, Gordon R., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Dibutyl Carbitol Extraction Procedure for the Separation of Tubanyl and Phosphate Ions

Description: "This report is concerned with the effectiveness of this washback procedure in reducing the phosphate concentration and also with other methods by which the simultaneous extraction of phosphate along with tuballoy may be minimized."
Date: July 12, 1945
Creator: Lord, E. J.; Andrews, L. J. & Gates, J. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Diesel Engines Underground: [Part] 4. Effect on Composition of Exhaust Gas of Variables Influencing Fuel Injection

Description: Report issued by the Bureau of Mines over diesel engine operations. As stated in the introduction, "it is the purpose of this report to present such data and to reemphasize the importance of adequate maintenance for diesel engines used underground" (p. 2). This report includes tables, and illustrations.
Date: April 1943
Creator: Holtz, John C.; Berger, L. B.; Elliott, M. A. & Schrenk, H. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Diffusion Length and the Utilization of Thermal Neutrons in a Heterogeneous Pile

Description: Abstract: "An accurate calculation is given for the quantity which corresponds to the diffusion length in the theory of the pile. The procedure is to establish a relationship between the diffusion length and the change in thermal utilization from a pile with infinite sides to one with sides of a finite length. The calculation of this change in the thermal utilization is then carried through. Approximation to the answer and numerically exact calculations are given in the report. The results show… more
Date: October 6, 1943
Creator: Plass, Gilbert N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Diffusion Length of Thermal Neutrons in Uranium

Description: Measurements made in a uranium cylinder result in a mean value of 1.55 cm. for the diffusion length L for distances of 1 to 4 cm. from the base of the cylinder. Calculations give a value which agrees with the experimental result and show further that L increases from 1.40 to 1.63 cm. as the neutrons diffuse a distance of 5 cm. into the uranium.
Date: May 27, 1944
Creator: Hughes, Donald James, 1915-1960 & Bragdon, E. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Digging-in of a Warped Rod Into a Rib

Description: Abstract. Some rather idealized considerations are given regarding the depth a warped rod presses into the ribs at the places of contact. It appears that this distance may, under some conditions, be of the order of 70 times greater than for a straight rod resting uniformly on the ribs.
Date: January 22, 1945
Creator: Martin, A. V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Direct Conversion of the TF₆ to TCl₄

Description: The following report provides a general summary of some methods that could be used to convert hexafluoride into tetrafluoride, but is mainly devoted to the work done on the conversion of tetrafluoride to tetrachloride.
Date: September 25, 1945
Creator: Calkins, Vincent P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Direct Current Electromagnetic Pumps

Description: Abstract: "A number of direct current conduction type electromagnetic pumps for liquid metals were constructed. Pumping capacities of over 400 gpm and efficiencies of over 50 percent were obtained. NaK alloy at temperatures up to 400 C was used in the test. The large currents required were obtained from rectifiers or from a homopolar generator constructed for the purpose."
Date: October 25, 1949
Creator: Barnes, A. H.; Smith, F. A. & Whitham, G. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Direct Current Emission Regulator

Description: The following report describes a current beam modulation designed to replace the standard regulator and to achieve an ion beam free from amplitude modulation.
Date: August 4, 1945
Creator: White, J. R. & Cameron, A. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Direct-Reading Integrator

Description: Abstract: "An instrument is described which makes use of a standard watthour meter in conjunction with an amplifier to register the time integral of a varying voltage. When a suitable current shunt is used as the input element, the instrument becomes a direct-reading coulombmeter. In any of its applications the instrument is accurate to plus or minus two per cent."
Date: 1945
Creator: Waithman, V. B.; Macleish, K. G. & Frey, H. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Dissolution of Thorium Metal and Thorium Dioxide in HNO3 - HF and HNO3- ( NH4 ) 2 SiF6 Mixtures

Description: Abstract. A satisfactory method has been found for dissolving thorium metal and thorium oxide in heat-treated 25-12 stainless steel vessels without excessive corrosion of the vessels. The dissolution medium consists of strong HNO3 containing a small amount of fluoride or fluo-silicate. the fluoride required has no harmful effects on a subsequent solvent-extraction step for a separation of uranium isotopes from the dissolved thorium.
Date: August 2, 1946
Creator: Schuler, Frederick W.; Steahly, Frank L. & Stoughton, Raymond W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Dissolution of Uranium Tetrafluoride

Description: "Five new dissolution processes for uranium tetrafluoride are discussed-the NH4OH-H2O2 method, the H2SC4 - (NH4)2S2O8 method, the AlCl3 method, the NaAlcl method, and the Al (NO3)3.9E2O method. It is concluded that NaAlCl4 and Al(NO3)3.9H2O are preferable to the other agents, especially with regard to rate of dissolution and ease of manipulation."
Date: 1949
Creator: Calkins, V. P. & Susano, C. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Distribution Coefficient of D₂O Between Triethylamine and Water

Description: Summary: "Water containing 1.8% D2O was distributed between the two liquid phases formed with triethylamine at 20 and 35 C. The triethylamine was removed from each phase by aseotropic distillation with benzene before analyzing the water by determining its density with a quartz float. The ratios of the concentrations of the D2O in the water layer to that in the amino layer were 1.007 and 1.004 at 20 and 35, respectfully. The differences from unity are about the same as the errors of analysis."
Date: August 31, 1943
Creator: Carlson, H. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Distribution Coefficients of HNO₃ in the System Dibutyl Carbitol-Nitric Acid

Description: This report is part of a series of reports made during a series of investigations to determine the characteristics of nitric acid-dibutyl carbitol mixtures in the plant. In this report, distribution coefficients are given for various combinations of nitric acid-dibutyl carbitol.
Date: 1945
Creator: Warren, Buddy & Susano, C. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Distribution of Thermal Neutrons in a Slug with Thick End Caps

Description: The distribution of thermal neutrons in a W slug having a one centimeter aluminum end cap has been calculated on the basis of simple diffusion theory. It is found that the average neutron density, and therefore the power output, at the end of the slug is about 34% higher than the density far from the end cap. This result agrees well with the recent Argonne pile experiments (CP-1729).
Date: August 3, 1944
Creator: Wilkins, J. Ernest, Jr., 1923-2011
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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