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Leaching and Precipitation Tests on Grants Ores
Leaching tests were run on two samples from the Grants area in New Mexico. Uranium extractions of 94 per cent were obtained by leaching Sample 6-1 with solutions containing 240 lbs. of Na2CO3 and 60 lbs. of NaHCO3 per ton and by leaching Sample 6-2 with 270 lbs. of Na2CO3 and 180 lbs. of NaHCO3 per ton. Cyclic tests were completed using caustic precipitation of the leach liquor.
Date:
September 10, 1951
Creator:
Abrams, Charles S. & George, D'Arcy R.
Object Type:
Report
System:
The UNT Digital Library
Preliminary Studies of the Adsorption of Uranium in a Resin-In-Pulp System
Data were obtained in non-flowing and flowing (continuous) batch adsorption systems to serve as a guide to the operating conditions that should be used in a resin-in-pulp adsorption system for the recovery of uranium from ores.
Date:
July 27, 1953
Creator:
Abrams, Charles S. & Kaufman, David
Object Type:
Report
System:
The UNT Digital Library
Preliminary Leaching Tests for the Extraction of Uranium From Various Monticello Stockpile Ores
In a section of the area occupied by the Atomic Energy Commission in Grand Junction, Colorado, a pilot plant is being erected to test a resin-in-pulp process. The process is based on the adsorption of uranium by resin from acid pulps. The first ores to be treated at this plant will be Monticello Stockpile Material. Samples of the various stockpiles sere subjected to a series of leaching, filtering and settling tests, the results of which are presented in this report.
Date:
March 2, 1953
Creator:
Abrams, Charles S.; Moulton, Harry D. & Viklund, Hans I.
Object Type:
Report
System:
The UNT Digital Library
Metabolism and Distribution of Inhaled Plutonium in Rats
From abstract: "Several different techniques were used to introduce tracer quantities of plutonium into the lungs of rats. When aerosols were produced by atomizing aqueous solutions of the nitrates it was found that approximately 20 per cent of the dose was absorbed and deposited in the skelton [sic] with tetra-, hexa-, and trivalent plutonium. Thus with these compounds, the lungs represent a more dangerous portal of entry than either oral (0.05 per cent) or intramuscular (13 per cent) administration. Tetravalent Pu was eliminated most slowly from the lung, the average half-time during the first month being 15 days. But when citrate was added to complex the Pu, over 70 per cent was eliminated within 1 day. This was accompanied by a deposition of over 30 per cent in the skelton [sic] and over 20 per cent in the liver. Presumably citrate breaks up the insoluble colloid in which Pu exists in the lungs. Complexing with cupferron which, unlike citrate, produces a "fat soluble" compound, greatly diminished the extent of absorption from the lungs. Plutonium oxide smokes which were produced at high temperatures were eliminated more slowly from the lungs (average half time of 30 days during the first month) and …
Date:
October 29, 1946
Creator:
Abrams, Richard; Siebert, H. C.; Potts, A. M.; Forker, L. L.; Greenberg, D.; Postel, A. et al.
Object Type:
Report
System:
The UNT Digital Library
The Production of Radioactive Xenon for Animal Exposures
Large amounts of Xe133 were needed to study the biological effects resulting from inhalation of radioactive gases. This paper deals with the problems of collecting and concentrating Xe133 and with the problems of separating it from the uranium matrix after fission
Date:
November 26, 1945
Creator:
Abrarus, Richard & Beilman, Clarence E.
Object Type:
Report
System:
The UNT Digital Library
Experimental Determination of Contact Conductance for Some Stainless Steel Contacts
"Contact conductances for three semi-smooth and rough stainless steel contacts involving six steels are determined. The procedure and equipment used are fully described, and the results are given. Graphs display thermal conductance and conductivity versus pressure and temperature."
Date:
July 1962
Creator:
Adamantiades, Achilles
Object Type:
Report
System:
The UNT Digital Library
Nature of Bond and Diole Moment of the LiH Molecule
A description of the character of the bond as a superposition of homopolar and ionic bonding is a very useful approximation in quantum-mechanical research on the properties of molecules. In the LiH molecule, it may be assumed with sufficient accuracy that the bond is formed by two electrons, since, besides the outer electrons composing the bond, there is only a closed layer of inner electrons in the lithium atom.
Date:
December 15, 1948
Creator:
Adamov, M. N.
Object Type:
Report
System:
The UNT Digital Library
Recovery of Uranium From Fiberglass Air Filters
Abstract: Various procedures for extracting uranium from fiberglass air filters have been tested and compared. Satisfactory results which involve the least amount of handling are obtained by simply washing the material with hot 1:1 hydrochloric acid.
Date:
August 5, 1946
Creator:
Adams, R. H.; Rogers, J. A. & Brown, K. B.
Object Type:
Report
System:
The UNT Digital Library
Separation of Tuballoy From Tantalum by Chlorination Distillation Process
Abstract: Tuballoy can be effectively separated from tantalum filaments by chlorination of the filaments and subsequent distillation and condensation of tantalum chloride. Apparatus for chlorination of filaments and distillation separation in one unit is under consideration. Chemical methods of separation of tuballoy from distillation residues are being tested.
Date:
February 6, 1946
Creator:
Adams, R. H.; Rogers, J. A.; Wagner, E. L. & Miller, A. J.
Object Type:
Report
System:
The UNT Digital Library
Sweeping of Fission Gases from Solutions of U and Plutonium
Technical report describing two experiments performed to compare the amounts of fission gases swept out of UNH solution with those amounts swept out of PU solution under idential condiditons. The charge wire technique was used. The essential date and the results are given in tables in the report.
Date:
September 4, 1945
Creator:
Adams, R. M. & Finkelstein, H.
Object Type:
Report
System:
The UNT Digital Library
The Production of Leukopenia by Chronic Irradiation of the Abdominal Viscera of the Cat
This report describes an experiment that produced leukopenia in cats through irradiation. It elaborates that irradiated cats had significant decreases in levels of leukocytes, polymorphonuclear leukocytes, and lymphocytes. The methods and specific results of the experiment are also given and discussed.
Date:
1948
Creator:
Adams, William S. & Lawrence, John S.
Object Type:
Report
System:
The UNT Digital Library
Calculation of k-o in a Uranium-Graphite Lattice
Since the 25 content of the uranium to be used in a MTA multiplying lattice is quite uncertain at present, it is necessary to assume various degrees of depletion in order to estimate the multiplication constant K-o and the production of 49 in an infinite uranium-graphite lattice
Date:
February 8, 1951
Creator:
Adelman, F.
Object Type:
Report
System:
The UNT Digital Library
Three Group Equations for a Multiplying Medium
In the past it was felt that the easiest way to treat a three group equation for a MTA lattice was to solve it without certain terms. This iterative procedure converged rapidly for a medium with depleted uranium fuel, and in fact, a second iteration was not needed.
Date:
June 11, 1952
Creator:
Adelman, F. L.
Object Type:
Report
System:
The UNT Digital Library
Diffusion Equation Green's Functions for Box Problems
The use of diffusion theory to attempt to reproduce the chemical data of Hicks and Stevenson for the spatial distribution of neutrons in a solid block of uranium that is bombarded by 190 Mev neutrons is described.
Date:
December 27, 1951
Creator:
Adelman, F.; Lepore, J. & Rosenblum, M.
Object Type:
Report
System:
The UNT Digital Library
Energy Spectrum of Neutrons from 3-10 MEV
The energy distributions of neutrons in the 3-10 Mev energy range resulting from the bombardment of thin U targets are being investigated by the measurement of proton recoils in photographic plates.
Date:
February 11, 1952
Creator:
Adelman, Frank
Object Type:
Report
System:
The UNT Digital Library
Stability of Florothene Under Exposure to Gamma Radiation
The stability of fluorothene (polytrifluorochloroethylene, Kel-F) to gamma radiation has been investigated to estimate the probable life expectancy of fluorothene equipment exposed to Purex process solutions. Samples of fluorothene were exposed to total gamma radiation dosages up to 10 degree R. The results of these tests substantiate the findings reported by Sisman and Bopp in their compilation of data on the affects of radiation on plastics.
Date:
July 6, 1956
Creator:
Adler, K. L.
Object Type:
Report
System:
The UNT Digital Library
A Study of Efficiencies and Pressure Drop Characteristics of Air-Filtering Media
Removal of particles from air is discussed in terms of three classes of filtering media--air-sampling, respirator, and air-cleaning. Plots of efficiency versus filtering velocity are presented. The pressure drop characteristics of the filters are discussed in terms of initial pressure drops of the clean filters, variations in pressure drop of the individual filters, and comparison of loading rates.
Date:
August 10, 1953
Creator:
Adley, F. E.; Scott, R. H. & Gill, W. E.
Object Type:
Report
System:
The UNT Digital Library
Alpha Particle Radiolysis of Anion Exchange Resins
Technical report. From Abstract : "Irradiation of 'Dowex' 1, 'Permutit' S-1, and 'Permutit' SK anion exchange resins with alpha particles results in losses in ion exchange capacity and in 'apparent per cent crosslinkage'. The order of decreasing radiolytic stability for these properties in 'Permutit" SX > 'Permutit' S-1 > 'Dowex' 1."
Date:
November 1961
Creator:
Ahrens, Rolland W.
Object Type:
Report
System:
The UNT Digital Library
Scattering of Slow Neutrons in Crystals
The authors consider the scattering of slow neutrons in crystals of identical nuclei. Formulas are derived for the elastic and inelastic scattering of neutrons.
Date:
1947
Creator:
Akhieser, A. & Pomeranchuk, J.
Object Type:
Report
System:
The UNT Digital Library
The Refraction of Neutrons
Formulas are derived for determining the refractive index of ordinary crystals and magnetized substances (ferromagnetic and paramagnetic) for slow neutrons.
Date:
October 8, 1947
Creator:
Akhiezer, A. I. |q (Aleksandr Ilʹich). 1911-2000 & Pomeranchuk, I. |q (Isaak). 1913-1966
Object Type:
Report
System:
The UNT Digital Library
The Theory of Resonance Scattering of Particles
A simple method is proposed for considering the problem of resonance scattering of slow particles.
Date:
October 8, 1947
Creator:
Akhiezer, A. I., (Aleksandr Ilʹich), 1911-2000 & Pomeranchuk, I. (Isaak), 1913-1966
Object Type:
Report
System:
The UNT Digital Library
On the Bond Between Diketopiperazines and Amino Acids
The authors worked out a method for obtraining piperazines and dihydro-pyrasines.
Date:
May 23, 1950
Creator:
Akimova, L. N.
Object Type:
Report
System:
The UNT Digital Library
Theory of the Hysteresis Loop
The problem of establishing the laws governing the behavior of the curve of magnetic permeability have occupied many researchers. Stoletov's curve is examined in this article.
Date:
October 11, 1949
Creator:
Akulov, N. S.; Galkina, O. S. & Ivanovskiy, V. I.
Object Type:
Report
System:
The UNT Digital Library
An anticoincidence gamma ray scintillation spectrometer
From abstract: "A new type of scintillation spectrometer is described. It is designed to suppress signals arising from incident photons that are not completely absorbed in the primary detecting NaI(T1) crystal."
Date:
1952
Creator:
Albert, Richard D.
Object Type:
Report
System:
The UNT Digital Library