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Acute Radiotoxicity of (BA-LA)140 in Rats and Mice : Part I. Preparation and Administration of the Emitters
Barium 140 and its daughter, lanthanum 140, were obtained from uranium fission. The composition of the solutions used in animal studies is given a procedure for delivering toxic doses to small animals and methods for preparing animal tissues for radioactivity measurements are described.
Acute Radiotoxicity of (Ha-La)140 for Rats and Mice. Part III. Effects of Height and Food Intake of Animals Treated with (Ha-La)140
In the (Ha-La)140 experiments mice and rats were injected intraperitonially with toxic doses of radiobarium. The weight curves indicate that there was definite retardation of growth in mice and 2.25 uc/g and in rats at 1.98 uc/g.
Attempts to Reduce Uranium from Bromide Solutions in Ethyl Bromide and Related Solvents
Attempts have been made to reduce both UBr4 and UBr3 from ethyl bromide-benzene solutions, ethyl bromide-hexamethyl benzene solutions, ethyl bromide solutions and n-propyl bromide solutions.
The Clinical Physiology of Dogs Exposed to Daily Total-Body Dopses of X-Rays
The clinical effects in dogs exposed to single doses of total-body X radiation are described.
The Clinical Physiology of Dogs Exposed to Single Total-Body Doses of X-Rays
A rational approach to therapy for irradiation damage must be based upon knowledge of the nature of the damage. This study of clinical physiology of dogs exposed to singe doses of total body X-radiation was undertaken to provide such a basis for therapy and to provide a basis for descriptions of the effects of specific project hazards.
Collision Mechanics and Energy Angle Nomography
The general reaction of interest in nuclear physics is that due to N1 colliding with N2 and producing N3 and N4 with reaction energy Q. It is shown how the energies of N3 and N4 can be obrtained at any angle from a nomograph simply constructed of semicircles.
Combination of Plutonium with Plasma Proteins
It has been shown that plutonium is bound to constituents of blood serum or plasma and is not ultra-filterable from Undialyzed sora to the extent that uranium is ultrafilterable
Comparative Action of Cyclotron Fast Neutrons and X-Rays. Part II. Hematological Effects Produced in the Rabbit by Fast Neutrons
Swift snuffle free rabbits were exposed to cyclotron fast neutrons provided by the reaction of 8 Mer deuterons on a beryllium probe.
Comparative Action of Cyclotron Neutrons and X Rays : Part III : Statistical Analysis of Blood Data
The heterophil and lymphocyte counts of 67 rabbits exposed to fast neutrons, and those of 123 rabbits exposed to 200 kv X rays were analyzed.
Comparative Late Effects of Periodic Doses of Fission Neutrons and of Gamma Rays.
The study was undertaken to obtain information on occupational hazards associated with fast neutrons and gamma rays.
Comparative Late Effects of Single Doses of Fission Neutrons and Gamma Rays
Having obtained information about the late effects of small daily doses of fast neutrons and gamma rays, it was also important to study the late effects caused by the same radiations when single large doses are administered
A Critical Study of the Turmeric Procedure for the Determination of Small Quantities of Boron
This study concerns with a critical study of the conditions for development of the color with turmeric, which follows the distillation procedure and the evaporation of the lime water solution that has been used to recover the boron methyl ester that distills.
Crystal Structure Studies of the Systems KF-UF4, KF-ThF4, and KF-LaF3
This paper gives the principal results of crystal structure studies of the phase systems KF-UF4, KF-ThF4, andKF-LaF3.
The Determination of Water in Uranyl Nitrate and in Ethereal Solutions of Uranyl Nitrate
The primary purpose of the study was to find a method for the determination of water in the solvent layers that had been shaken to equilibrium with aqueous solutions of uranyl nitrate or other nitrates.
The Effect of Plutonium on Tissue Metabolism of Rats
When plutonium is introduced into the body either by injection or by intratracheal instillation, there are, in addition to the usual signs of damage to the lymphoid tissues, definite alterations in the metabolism of tissues.
The Electrolysis of Uranium Halides
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.
The Excretion, Retention, Distribution, and Clinical Effects of Strontium 89 in the Dog. Part I. Report of Experimental Work
In adult dog, the 30 day LD 50 for intramuscularly injected Sr 89 (with some Dr 90 contamination) was approximately 1.0 uc/g injected dose or 0.5 uc/g retained dose at 10 days, corrected for excretion and decay.
The Extraction of Traces of Uranium Cupferrate by Ether from Concentrated Uranyl Solutions : the Preparation of UO2(O(NO)NC6H5)2 NH4)(NO)NC6H5
This study presents the analysis of the uranyl cupferrate that is precipitated from neutral or slightly acidic solutions of uranyl sulfate upon adding a slight excess of cupferron.
Histopathological Studies of Mice Exposed to Fast Neutron Radiation
Histological observations were made on the following structures of CF1 male and female mice after exposure to 65n, 96n, and 117n units of fast neutrons.
The Ignition of U3O8 in Oxygen at High Pressures and the Crystallization of UO3
This paper reports the results of a qualitative investigation of the urnaium-oxygen system at pressures varing from one atmosphere to 150 atmospheres, and at temperatures up to 750° C
The Interference of Nickel in the Reduction of Uranium Solutions in the Jones Reduction: a Study of the Effects of Nickel, Cobalt, Manganese, Zinc, Calcium, Magnesium, Aluminum and Sodium Ions upon the Reduction
Nickel interferes seriously with the reduction of uranyl solutions in the Jones reductor. Nickel ion, if added after reduction of a uranium solution has no harmful effect upon the aeration and the titration with standard ceric sulfate solution.
Note on the Determination of Nitric Acid in Uranyl Nitrate Solutions
Working with an acid solutions of uranyl nitrate it is desirable to be able to determine the acid concentration of the solution. While a tedious method is available a more rapid method has been tried and is described in this article.
Observations on the Preparation of the Tribromide and Triiodide of Uranium
Uranium Tribromide has been prepared both by the reduction of the tetrabromide with hydrogen at 600-700° C, and by direct union of uranium and bromine at about 580°C. An attempt to prepare the triiodide of uranium by the latter method was unsuccessful
Operation and Service Notes on a Batteryless Type A Counting System Using Parallel Plate or Concentric Cylinder Chambers (Mark 6 Model 30 and Mark 10 Model 32)
The purpose of this report is to furnish information which will aid in the operation and servicing of the "A" counting system.
The Preparation and Some Properties of UBr3, UBr4, UOBr2 and UO2Br2
An investigation of the preparation and some of the physical properties of UBr3, UBr4, UOBr2 and UO2Br2 has been carried out in order to studey methods of preparing UBr3 and UBr4.
Preparation, Purification, and Properties of Anhydrous Uranium Chlorides
Methods of preparing anhydrous uranium trichloride, uranium tetra-chloride, uranium hexachloride and uranyl chloride are described which use uranium metal as the starting material.
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
Radiotoxicity of Injected SR89 for Rats, Mice, and Rabbits. Part I. Introduction: Methods
The toxic effects and metabolism of radiostrontium (Sr89-Sr90) were studied
Radiotoxicity of Injected SR89 for Rats, Mice, and Rabbits. Part II. Metabolism and Organ Distribution
Mice, rats and rabbits excreted Sr89-Sr90 very rapidly following intraperitoneal or intravenous administration. The greatest part of the excretion took place during the first three days, and by 10-15 days virtually no more of the retained strontium was excreted.
Radiotoxicity of Injected Sr89 for Rats, Mice, and Rabbits. Part III. Lethal Action and Clinical Changes
The LD 50 in 30 days was found to be between 7 and 8 uc/g of Sr89-Sr90 when administered intraperitoneally to mice; for rats it was slightly less than 5 uc/g; for rabbits it was also slighly less tha 5 uc/g
Radiotoxicity of Injected SR89 for Rats, Mice and Rabbits. Part IV. The Hematological Effects of Enterally and Parenterally Administered Strontimu 89 in Mamals
Hematological studies of the peripheral blood of rabbits, rats, and mice, after the intraperitoneal or stomach tube administration of Sr89 in doses from 0.015 to 14.4 uc/g for varying periods up to 108 weeks, are reported.
Safety Circuit with DC Amplifier
A method is described to record the rise in intensity of any hard neutron radiation end to cut off the radiation at any predetermined level.
The Solubility of Sodium Uranyl Carbonate in Water and in Solutions of Various Salts
The study was conducted to ascertain the maximum amount of uranyl carbonate that could be held in solution at equilibrium in either water or various salt solutions
The Solubility of Uranous Oxalate
Methods based on alpha activity measurements have been developed for the determination of small amounts of uranium in solution, and these methods have been applied to the determination of the solubility of uranous oxalate under a variety of conditions.
Some Reactions of Uranium Metal
A summary of certain reactions of uranium metal is presented.
Studies of the Hemolytic Effect of Radiation
Evidence is presented indicating that both acute and chronic radiation anemia are due, in part, to a hemolytic reaction, and not solely to an inhibition of erythropoietic activity as has been assumed by most investigations.
Ultramicrochemical Investigations of the Solubilities of Some Plutonium Compounds
This article covers investigations carried out on an ultramicrochemical scale with volumes from 0.1 to 0.5 of a microliter and 0.5 mg of plutonium being used.
Unsteady-State Separation Performance of Cascades
This paper is to develop the theory of the unsteady-state behavior of these cascades and to present simple ways of thinking about this behavior
The Use of Cupferron in Inorganic Analysis with Special Reference to the Determination of Uranium. I. Introduction. The Properties of Various Cupferrates
A summary of works of numerous investigators who have studied the properties and the analytical applications of cupferron, phenyl nitroso hydroxylamine ammonium are presented.
The Use of Cupferron in Inorganic Analysis with Special Reference to the Determination of Uranium. II. The Factors that Control the Extraction of Various Elements from Aqueous Solution by Cupferron Plus an Organic Solvent
A generalized formulation of the relations that apply to the extraction of an element by cupferron plus an organic solvent is desirable in choosing the conditions favorable to the process.
The Use of Cupferron in Inorganic Analysis with Special Reference to the Determination of Uranium. III. The Isolation of Uranium as the Quadrivelent Cupferrate.
Quadrivalent uranium is precipitated by cupferron in acidic solutions. The precipitate is soluble in organic solvents such as chloroform or either.
Writing of Reports and Memoranda
A guide on writing secret reports or memoranda.
X-Ray Study of the Uranium-Oxygen System
The uranium-oxygen system has been studied as a function of composition by X-ray diffraction. Several new oxides and transition phases have been revealed, and the structures of most of the uranium oxides have been determined fully or in part.
A Critical Survey of Neutron Cross Sections
From introductory paragraphs: "The central problems in neutron research are the understanding of nuclear structure and the study of the properties of nuclear particles, particularly the properties of the neutron. The most fruitful attack on these problems is the determination of the probability of interactions between neutrons and nuclei, i.e., the measurement of neutron cross sections. Ideally, this involves the study of all possible types of neutron interaction with all available nuclei at all neutron energies...The discussion in this paper will omit the interactions leading to neutron productions, and will be limited to the intersections of neutrons with stable nuclei."
Acute Radiotoxicity of Injected Yttrium91
Report describing results of experiments that involved injecting radioactive yttrium into animals: "The excretion, retention, and distribution of the yttrium was measured, and its effect on survival and growth was observed. The average total excretion of Y91 to the time of death (from 76 hours to 24 days) was a little less than 30 per cent of the injected dose" (p. 2).
The Emf of Cells with Uranium: Uranium Halide Couples in Fused Salt Electrolytes
The emf of galvanic cells at high temperatures was measured using uranium metal in equilibrium with its chloride as one half of the cell, the other half of the cell being some reference electrode such as silver - silver chloride. Several designs of cells tried are described. A value of 2.83 volts/eq. at 1170[degree]K and also at 990[degree]K is considered as the most probably value for the potential of the uranium halide couple.
Modified Simpson Methane Flow Proportional Alpha Counter and Fission Counter
Abstract: This technical report consists of series of drawings of the instrument with the following explanation. The modification of the Simpson Methane flow proportional counter consists of a means for inserting and replacing samples into the chamber through an air-lock device which avoids the introduction of even a small quantity of air into the active volume of the chamber. This is accompanied by sweeping out the small volume of the air-lock containing the sample with methane gas before the sample is introduced into the chamber -- this sweeping out requiring only a few seconds. The mechanical construction is somewhat simplified over that employed in the Simpson counter design, although the electrical and counting characteristics are essentially duplicates of those employed in the Simpson version. Voltage plateaus about 400 volts long, flat within 1% per 100 volts are obtained with the counter, with the operating point at about 2500 volts for methane at one atmosphere pressure. A plateau extending over a range of about 40% variation in amplification factor is obtained. Standard samples have been checked to standard deviation of +/-0.3% over a period of one year. The counter is rather gas-tight and is ready for use within about ten minutes after the methane flow is first started. Thereafter counts may be started on samples with reliable results as rapidly as the samples can be changed. The small size of the whole chamber (less than 4" diameter overall) permits its use as a fission chamber inside one of the small channels in the thermal column of the pile. The sample is mounted upon the sample holder which is re-entrant from the outside (as shown) so as to have only 1/32"of metal between the sample and the outside. By allowing a bean of fast neutrons to enter the chamber through the re-entrant …
Effects of Total Body Z Irradiation of Rats. Part I, Lethal Action of Single, Paired, and Periodic Doses
Abstract: Exposure of Sprague Dawley white rats to single doses of 900 kvp X radiation demonstrated a medium lethal dose of 600 r which was not markedly dependent upon sex, weight, or, in the case of females, stage of the estrous cycle at the time of irradiation. Deaths within 30 days were most frequent between the fourth and eighth, and between the tenth and fifteenth post- irradiation days, indicating the existence of at least two processes leading to death in the "acute" period.
Pile Neutron Physics (2)
Abstract: In order to calculate the difference between the number of neutrons which cross the x = o plane before and after the channel has been introduced we consider the number of neutrons which cross an element of cylinder wall at a height x1 and in a direction between (see Figure 5).
Use of Redux Adhesives for Bonding Metal
Redux is a thermosetting synthetic resin manufactured by the Resinous Products & Chemical Co., Washington Square, Philadelphia 5, Pa. According to the manufacturer, it is intended for bonding metal to metal and metal to wood. It was apparently intended to replace rivets in aircraft structural parts and recent information indicates that a British airplane, the DeHaviland Dove, is in production using this resin. The adhesive was originally developed in England by Aero research Ltd. Experience at this laboratory has been confined to use of the resin for bonding electrical grade silicon steel laminations. Very strong bonds have been obtained under properly controlled conditions. The bond strength is sufficient to tear 29 gauge (.014") steel when attempting to peel off individual laminations. The bond is sufficiently homogeneous to prevent leaks parallel to the plane of the laminations into a high vacuum system. Experiments at the laboratory have been designed to test the adhesive for use in bonding the laminations which form the pole tips and vacuum chamber lids for the synchrontron magnet.
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