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Food Irradiation: FDA Could Improve Its Documentation and Communication of Key Decisions on Food Irradiation Petitions

Description: Correspondence issued by the Government Accountability Office with an abstract that begins "According to the Centers for Disease Control and Prevention (CDC), pathogens such as Salmonella, E. coli, and Listeria cause an estimated 14 million cases of foodborne illnesses each year, resulting in about 60,000 hospitalizations and 1,800 deaths. Foodborne illness symptoms can range from mild gastroenteritis to life-threatening renal syndromes. The populations most susceptible to the more serious symp… more
Date: February 16, 2010
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
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Food Irradiation: Available Research Indicates That Benefits Outweigh Risks

Description: A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the benefits and risks of food irradiation, focusing on the: (1) extent and the purposes for which food irradiation is being used in the United States; and (2) scientifically supported benefits and risks of food irradiation."
Date: August 24, 2000
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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What Has Happened to the Survivors of the Early Los Alamos Nuclear Accidents?

Description: Abstract: Two nuclear accidents involving a plutonium sphere just subcritical in size occurred at the Los Alamos Laboratory, LA-1 in 1945 and LA-2 in 1946. Because remote control devices were deemed unreliable at the time, the tamper material (tungsten carbide bricks in LA-1 and beryllium hemispheres in LA-2) was added by hand with the operator standing next to the assembly. In each case the critical size of the assembly was accidentally exceeded and the resultant exponentially increasing chain… more
Date: 1979
Creator: Hempelman, Louis Henry; Lushbaugh, Clarence C. & Voelz, George L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Ornithogalum Virens as a Plant Assay for Beta and Gamma Radiation Effects

Description: The purpose of this study was to determine if the monocotyledonous angiosperm, Ornithogalum virens (Quintanilha and Cabral, 1947), could be used in such a biological assay system. After exposing O. virens plants to acute (/sup 60/Co) and chronic (/sup 137/Cs) gamma radiation and internal beta radiation (/sup 32/P), lethality (LD/sub 50/, LD/sub 100/), growth inhibition, and chromosome aberrations were investigated. The LD/sub 50/ and LD/sub 100/ for acute gamma radiation were estimated to be be… more
Date: January 1, 1979
Creator: Herron, V J
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Pathogenesis and Regeneration of Radiation Induced Bone Marrow Injury, and Therapeutic Implications

Description: This report reviews aspects of experimental and clinical research performed in the investigation on the pathogenesis and recovery of bone marrow injury caused by total body irradiation.
Date: April 23, 1962
Creator: Fliedner, T. M., (Theodor M.), 1929-; Cronkite, Eugene P. & Bond, Victor P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Irradiated of 63S Aluminium Samples

Description: Summary: "Data obtained from testing and observing samples of 63S Al irradiated for approximately three months are presented. Tensile data show a slight, general increase in strength during pile exposure with a slight decrease in elongation. It is uncertain whether tkis increase in strength is a result of irradiation, exposure to slightly elevated temperatures, or a combination of the two effects. Metallographic examination revealed no apparent damage to the microstructure. As a result of these… more
Date: 1952
Creator: Wright, P. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of Reactor Irradiation on the Thermal Conductivity of Uranium Impregnated Graphite at Elevated Temperatures

Description: "An experiment to determine the effect of reactor irradiation on the thermal conductivity of uranium-impregnated graphite at elevated temperatures as described. The results show a decrease in the thermal conductivity saturating at [approximately] 60 percent at a temperature of 700 degrees C; at [approximately] 50 percent at a temperature of 1000 degrees C; and at [approximately] 25 percent at a temperature of 1300 degrees C. It was found that after irradiation at a given temperature, exposure… more
Date: April 29, 1954
Creator: Durand, Richard E.; Klein, David J. & Nykiel, Harry H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Role of Ionization in Radiation Annealing

Description: "The role of ionization in the phenomenon of 'radiation annealing' of graphite has been studied by using a 1-Mev electron beam. Changes in the c-axis of a sample with a Hanford irradiation of 460 mwd/ct were studied. Two thermal anneals of 4 hours each at 350 degrees C proved sufficient to complete the thermal annealing at this temperature. The samples were then irradiated for 7-1/2 hours at a temperature of 340 degrees C. The samples received an irradiation of 47 microampere-hours, equivale… more
Date: unknown
Creator: McClelland, J. D.; Smith, A. W. & Senkovits, E. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Chemical Effects of 1 Mev Electrons on BrF3 at 25 degrees C

Description: "An investigation of the chemical effects of 1-Mev electrons on BrF3 at 25 degrees C has been carried out. Pressure measurements taken during the irradiation suggest the presence of Br2 and BrF5 as decomposition products and a fractional distillation of the irradiated liquid confirmed their presence. The extent of decomposition was determined both by fraction distillation and spectrophotometric methods. The radiation effect seemed to reach saturation when approximately 10 per cent of the BrF3… more
Date: October 1, 1954
Creator: Yosim, S. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fast Neutron Irradiation Procedure

Description: This report discusses a series of investigations for biological and biochemical study of chronic exposures of animals to neutrons through an irradiation procedure.
Date: 1949
Creator: McDonald, Ellice, 1876-
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Radiation Chemistry of Nitrite Ion in Aqueous Solution

Description: When deaerated solutions of KNO2 at their natural pH are irradiated with γ- or x-rays, the main initial reaction is a formation of hydrogen and hydrogen peroxide. As peroxide builds up, a radiation-induced reaction between nitrite and peroxide sets in, which results in the formation of nitrate. This reaction is slower the higher the nitrite concentration. The kinetics of the nitrite-peroxide reaction were studied in detail by the irradiation of synthetic mixtures, and the results were satisfact… more
Date: unknown
Creator: Schwars, Harold A. & Allen, Augustine O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Effect of Reactor Irradiation on the Stress Strain Curve of Copper

Description: The following report describes the method of a crystal of 99.99% pure copper grown under high vacuum and cut into two specimens used to test the effects of reactor irradiation on copper. Provided is a map of the results that show the difference between the unirradiated and irradiated copper samples through the process of stress strain.
Date: 1951
Creator: Blewitt, T. H. & Coltman, R. R., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Variation in Maximum Power Density and Maximum Heat Flux of the Core and Blanket Thorium Plates in the Converter Reactor with Irradiation Time

Description: This report describes how to achieve the variation in maximum power density and maximum heat flux of the core and blanket thorium plates in the converter reactor with irradiation time.
Date: June 23, 1952
Creator: Sletten, H. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Maritime Loop Irrradiation Program - Savannah I Fuel Irradiation: Progress Report First and Second Quarters, July, 1960-January, 1961

Description: The General Electric Company is proceeding with an irradiation program to proof test a representative array of Savannah I fuel rods. Irradiation of a test assembly containing Savannah I fuel rods has begun and it is proposed that the results of this irradiation will permit an advance evaluation of the fuel performance and fuel burnup in the Savannah I reactor. This report covers the first two quarters of the reporting period. All aspects of the subject program have been consolidated and applica… more
Date: February 13, 1961
Creator: Marburger, I. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Compilation of Techniques Used By Vallecitos Radioactive Materials Laboratory

Description: Equipment and techniques for remote examination of irradiated fuel assemblies applicable to the Maritime Program are described. The following subjects are covered: visual and photographic examination, dimensional measurements, gamma activity scanning, fission gas release and fuel rod void volume determinations, density measurements, metallographic examination, and radiochemical burnup analysis.
Date: February 1961
Creator: Brandt, F. A.; Mathay, P. W. & Zimmerman, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Radioactive Anthracene-C14 and Acridine-C14 from the Neutron Irradiation of Acridine

Description: Anthracene-C14 has been produced by neutron irradiation of the nitrogen homolog, acridine. The recoiling carbon 14 entities produced by the N14(n,p)C14 reaction were also found in acridine molecules, where the nitrogen had not undergone neutron capture during the course of irradiation. The ratio of activity as acridine to the activity as anthracene was about 19/1. Of the total activity produced in the samples, 3.5% was found as acridine, and 0.2% was found as anthracene.
Date: unknown
Creator: Wolf, Alfred, P. & Anderson, Christian, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Experimental Application of Neutron Capture Therapy to Glioblastoma Multiforme

Description: The rapid development of the field of atomic energy during the past few years now permits the exploration of applications to medicine involving new concepts in the treatment of cancer. One such has been the study of neutron capture therapy which is being developed at the Brookhaven National Laboratory.
Date: July 26, 1954
Creator: Farr, Lee, E., M. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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