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in subjects: "Isotopes."  
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The Remote Working Level Monitor. Final Report

Description: The Remote Working Level Monitor (RWLM) is an instrument used to remotely monitor the RN-daughter concentrations and the Working Level (WL). It is an ac powered, microprocessor based instrument which multiplexes two independent detector units to a single central processor unit (CPU). The CPU controls the actuation of the detector units and processes and outputs the data received from these remote detector units. The remote detector units are fully automated and require no manual operation once … more
Date: November 18, 1977
Creator: Keefe, Donald J.; McDowell, William P. & Groer, Peter G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Literature Survey on World Isotope and Radiation Technology : First Semi-Annual Report Covering the Period from June 15, 1961 to December 14, 1961

Description: The following report is the first semi-annual report of a literature survey designed to investigate the uses and technology of radioisotopes in the countries of the world from 1955 to the present. This survey includes two phases: 1) involves the direct comparison of radioisotopic work in all fields in various countries as demonstrated at international conferences. 2) involves a more detailed examination and evaluation of the individual fields of interest selected previously (Phase II is also ex… more
Date: January 10, 1962
Creator: Haffner, J. W. & Terrell, C. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Literature Survey on World Isotope and Radiation Technology : First Interim Report Covering the Period from June 15, 1961 to August 14, 1961

Description: Abstract: "This is the first interim report of a literature survey investigating the uses and technology of radioscopes in the countries of the world, with particular emphasis necessarily placed on those more highly industrialized nations. Part I includes a general summary of the quantity and quality of radioisotope work being performed in these countries. Among the outstanding radioisotope applications with respect to quantity is the work of Japan in chemical research, that of USSR in metals r… more
Date: August 14, 1961
Creator: Haffner, J. W. & Stone, C. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Literature Survey on World Isotope and Radiation Technology : Quarterly Report Covering the Period from December 15, 1961 to March 14, 1962

Description: Abstract: "This quarterly report, ARF 1194-10, covers the work performed in the time period December 15, 1961 to March 14, 1962, on Contract No. AT(11-1)-578. In this period, Phase II, the detailed evaluation of various fields of radioisotope research, has been extended. Preliminary results on the use of radioisotopes in the industrial applications, apparatus and techniques, and metallurgy categories are presented. These preliminary studies indicate the quantity of research, growth rates, and s… more
Date: April 11, 1962
Creator: Haffner, J. W. & Terrell, C. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Isotopic sources of secondary radiation : second interim technical report covering the period from March 1 to July 1, 1959

Description: Summary. During the past year the work carried out in this program has included experiments on the x-ray output produced by the separated fission product beta sources, the interpretation of such experiments for the effective design of high level secondary x-ray sources, and the design and testing of prototype sources of secondary radiation for specific industrial applications. In this report results of work carried out during the past fours months are reported: (1) analysis of beta-excited x-… more
Date: August 3, 1959
Creator: Voyvodic, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Autoradiography as a Safeguards Inspection Technique for Unirradiated LWR Fuel Assemblies

Description: A nondestructive autoradiographic method is described which can provide a verification that rods in the interior of unirradiated LWR fuel assemblies contain low-enriched uranium. Sufficient absorber must be used to reduce contributions to image density by beta radiation from uranium-238 daughters. When appropriate absorbers are used, the density of the image of a uranium-containing fuel rod is proportional to the uranium-235 enrichment in that rod. Exposure times as short as 1.5 hours can be ac… more
Date: May 1978
Creator: Brumbach, S. B. & Perry, R. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Isotope Effects on Intermolecular Interactions and Isotopic Vapor Pressure Differences

Description: From summary: "The isotope effect on the van der Waals interaction resulting from vibrational excitation terms has been discussed in great detail to show that it is a zero-point energy effect. Interaction between rotational, transistional, and vibrational motion in the condensed phase has been also discussed in detail in terms of a very simple model. By use of approximation methods, the order of magnitude of these effects is demonstrated and it is shown that consideration of them is of importan… more
Date: 1962
Creator: Wolfsberg, Max
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Secondary [alpha]-Deuterium Isotope Effect in the Thermal Decomposition of [alpha]-Phenylethylazo-2-Propane

Description: This technical report describes an experiment designed to measure the rates of decomposition of [alpha]-Phenylethyl-[alpha]-d-azo-2-propane(II) and [alpha]-phenylethylazo-2-propane-2-d(III). The report then discusses the results and draws conclusions from the identified isotope effects of the experiment.
Date: 1962
Creator: Seltzer, Stanley
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Decay Schemes and Nuclear Spectroscopic States in the Heavy-Element Region (Thesis)

Description: From introduction: "A study of the decay schemes of a considerable number of nuclei in the heavy-element region has been undertaken in the hope that a more detailed knowledge of the energy levels involved will lead to a better understanding of their nature and therefore of the nucleus itself."
Date: June 1955
Creator: Stephens, Frank Samuel, Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Geological Survey's Work on Isotope Geology of Uranium, Thorium, and Their Decay Products

Description: Report discussing a research program on the isotope geology of the uranium and thorium series. From Abstract: "Work is in progress on uranium-lead relationships in uranium ores of the Colorado Plateau region; on uranium-thorium-lead relationships in granite; on geologic variations in the isotopic composition of lead; and on radon and helium in natural gas."
Date: January 1952
Creator: Cannon, R. S. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Radiation Stability Studies

Description: From abstract: "An investigation of the radiation stabilities of aqueous solutions of sodium ethylenediamine tetraacetate and sodium acetate was made using a 3000-curie Co⁶⁰ source...A study of the behavior of the standard-size Beckman type glass pH electrodes in a solution containing 0.36 curie of Ce¹⁴⁴-Pr¹⁴⁴ activity per milliliter showed the useful electrode life to be of the order of two to eight days."
Date: September 22, 1952
Creator: Blanco, R. E.; Kibbey, A. H. & Pannell, J. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Mass Spectrometric Determination of Isotopic Ratio with Varying Ion Beam Intensity

Description: Summary: "An apparatus is described which applies alternate pulses from two ion beams to a galvanometer network. The isotopic ratio is read directly from a potentiometer. The comparison is independent of ion beam intensity. This method is not practical for application to the standard Nier assay instrument because of the low ion currents normally used. It is suggested that this comparison method may have utility in a spectrometer utilizing a high intensity ion source such as capillary ore or con… more
Date: March 6, 1946
Creator: Cameron, Alan E. & White, J. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Gamma-Ray Spectrometry of Neutron-Deficient Isotopes: Annual Progress Report, March 1964

Description: From abstract: "The objective of this program is to produce a set of pulse-height spectra representing the response of a standard gamma-ray scintillation spectrometer to radiations emitted in the decay of neutron-deficient nuclides."
Date: March 27, 1964
Creator: Heath, R. L. & Cline, J. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Stable Isotopes Division Semiannual Progress Report for Period Ending November 30, 1956

Description: Report issued by the Oak Ridge National Laboratory discussing progress made by the Stable Isotopes Division. Descriptions of of the progress and studies made are presented. This report includes tables, illustrations, and photographs.
Date: February 12, 1957
Creator: Keim, C. P. & McNally, J. R., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Contract No. AT (11-1)-67 Project No. 4 Between the University of Illinois and the U.S. Atomic Energy Commission : Report for the Period October 21, 1951 to September 12, 1952 and Proposed Program and Budget for the Period February 1, 1952 to January 31, 1953

Description: This research program is in hot-atom chemistry, exchange reactions, and isotope effects.
Date: 1952
Creator: Yankwich, Peter E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Alternate Substrates and Isotope Effects as a Probe of the Malic Enzyme Reaction

Description: Dissociation constants for alternate dirmcleotide substrates and competitive inhibitors suggest that the dinucleotide binding site of the Ascaris suum NAD-malic enzyme is hydrophobic in the vicinity of the nicotinamide ring. Changes in the divalent metal ion activator from Mg^2+ to Mn^2+ or Cd^2+ results in a decrease in the dinucleotide affinity and an increase in the affinity for malate. Primary deuterium and 13-C isotope effects obtained with the different metal ions suggest either a change … more
Date: August 1988
Creator: Gavva, Sandhya Reddy
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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