Ths Significance Of Beryllium Surface Contamination To Health (open access)

Ths Significance Of Beryllium Surface Contamination To Health

Surface contamination with beryllium becomes a hazard to health only when the potential exists for resuspension in air in enough quantity and for enough time to exceed the prescribed standards for airborne exposures. There are several factors governing the rate and nature of resuspension phenomena. These factors include: the quantity and properties of the particular beryllium compound causing the contamination, the nature of the surface, activities in the vicinity, ventilation in the area which might affect the dilution of resuspended particles, and the presence of other control measures such as respiratory protection and use of wet methods. Generally, it has been found that the problem is minimal and can be easily controlled by exercising good judgement based upon consideration of pertinent factors governing resuspension, and a knowledge of the nature of beryllium toxicity.
Date: May 27, 1964
Creator: Cohen, Jerry J. & Kusian, Ross N.
Object Type: Report
System: The UNT Digital Library
Silicon Nitride As A High-Temperature Radome Material (open access)

Silicon Nitride As A High-Temperature Radome Material

LRL has the responsibility of demonstrating the feasibility of a reactor for use as a power plant for a low-altitude, high-Mach-number missile. This reactor is literally a very high power air heater which must work at temperatures in excess of 2000' F. The reactor is exposed to high loads so one of the primary problems is providing high temperature structure. Considerable effort has been devoted to developing ceramic structural elements. One of the materials considered for this purpose is silicon nitride. In ceramic structural elements operating over large temperature ranges, a major problem is coping with thermal stress. In this respect there is a similarity with the radome problem. The work on silicon nitride at LRL consisted of limited fabrication studies (principally for familiarization), measurement of properties of interest to the application, and funding of fabrication scale-up efforts.
Date: May 19, 1964
Creator: Wells, William M.
Object Type: Report
System: The UNT Digital Library
Cratering Experience With Chemical And Nuclear Explosives (open access)

Cratering Experience With Chemical And Nuclear Explosives

Over the past 13 years a considerable body of data on explosive cratering has been developed for application to nuclear excavation projects. These data were obtained from some ten cratering programs using chemical explosives (TNT or nitromethane) and seven nuclear cratering detonations. The types of media studied have ranged from marine muck to hard, dry basalt, although most effort has been devoted to craters in NTS desert alluvium and basalt. Considerable effort has also been devoted to the study with chemical explosives of the use of linear explosives and rows of point charges. This paper is intended to be a summary of these data and a statement of the understanding which has been developed from them.
Date: May 14, 1964
Creator: Nordyke, Milo D.
Object Type: Report
System: The UNT Digital Library
Uniformity Of Output From A Low-Amplitude Plane-Wave Nitroguanidine Explosive System (open access)

Uniformity Of Output From A Low-Amplitude Plane-Wave Nitroguanidine Explosive System

In the Plowshare Program many calculations of the effects of underground explosions are made. Usually these are done on high-speed digital computers. The effects are calculated for ranges up to hundreds of meters from the explosion; at these ranges pressures become less than one kilobar. In order to make these calculations, information about the properties of the materials involved is required. Benedick [13] has developed a low-pressure, plane-wave lens using nitroguanidine. It was decided to use a similar lens in the Plowshare Program. A number of lenses were built using Benedick's technique. This report is of a study of simultaneity and pressure uniformity of these lenses, with some attempts at development of a reflection pressure vs particle velocity curve for them.
Date: May 12, 1964
Creator: Hearst, Joseph R. & Geesaman, L. B.
Object Type: Report
System: The UNT Digital Library
An 8-Matrix Theory of the Vertex p - NN Based on the Strip Approximation (open access)

An 8-Matrix Theory of the Vertex p - NN Based on the Strip Approximation

The present study was motivated by an attempt to understand low energy [formula] scattering within the framework of the bootstrap principle and the un-Reggeized version of the strip approximation. This work attempts to generate low energy [formula] scattering in the p(1,1) and p(3,3) states assuming the potential operating in these states is generated by the exchange of low mass meson states in the crossed t-channel and low mass baryon states in the crossed u channel. In particular, the p-meson is kept in channel t; the p mass and the coupling of [formula] and [formula] appear as parameters. The parameters of the nucleon and (3,3) poles are taken as the elements to be determined by self-consistency.
Date: May 1964
Creator: Sarkissian, M. Der
Object Type: Report
System: The UNT Digital Library
Biology Division Semi-Annual Progress Report for Period Ending February 15, 1964 (open access)

Biology Division Semi-Annual Progress Report for Period Ending February 15, 1964

Technical report on the activities of the Oak Ridge National Laboratory Biology Division for the report period including a list of 346 publication and lectures and 205 short articles by members of the division on their research and activities.
Date: May 1964
Creator: Hollaender, Alexander, 1898-1986 & Carson, Stanley F.
Object Type: Report
System: The UNT Digital Library
Gas-Phase Radiolysis of Propane (open access)

Gas-Phase Radiolysis of Propane

Abstract. the direct and inert-gas radiolysis, as well as the vacuum ultra-violet photolysis of CD3CH2CD3, CH3CD2CH3 and C3H2+C3D3 mixtures have been investigated in the presence of radical scavengers. The major conclusions are : (a) at atmospheric pressures, neutral propane decomposition contributes to the observed products although to a lesser extent than parent ion decompositions ; (b) a variation in pressure has a pronounced effect on the fragmentation of the parent ion ; (c) the hydrogen atoms in the ethyl ion are randomized in the direct as well as in the inert-gas sensitized radiolysis ; (d) rearrangement in the parent ion is of minor importance in the radiolysis ; (e) although the formation of propylene is related to the propyl ion, it is not necessarily produced by the neutralization of this ion.
Date: May 31, 1963
Creator: Ausloos, Pierre J.; Lias, Sharon G., 1935- & Sandoval, L. B., (Mrs.)
Object Type: Report
System: The UNT Digital Library
Nuclear Superheat Project. Internal Steam Separation Development of Radial Vane Steam Separators (open access)

Nuclear Superheat Project. Internal Steam Separation Development of Radial Vane Steam Separators

This technical report describes the development, design, operation, and performance of a full-circle, radial-vane steam separator for the boiling water section of a nuclear superheat reactor. Steam-water tests of this model have demonstrated that is has vane capacity in excess of that required for the 300-Mx(e) separate superheat reactor and for the 300-Mw mixed spectrum superheat reactor. It is proposed that the vane capacity requirement of the 600 Mw(e) separate superheat reactor may be attained by increasing the nozzle length.
Date: May 31, 1963
Creator: Moen, R. H.
Object Type: Report
System: The UNT Digital Library
Nuclear Superheat Quarterly Project Report: Fifteenth Quarter, January-March 1963 (open access)

Nuclear Superheat Quarterly Project Report: Fifteenth Quarter, January-March 1963

From introduction: "This is the fifteenth in a series of quarterly reports which cover the progress and results from the conceptual designs, economic evaluations and research and development work performed by the General Electric Company as part of Contract AT(01-3)-189, Project Agreement No. 13."
Date: May 15, 1963
Creator: Flock, W. L.
Object Type: Report
System: The UNT Digital Library
Pressure-Volume-Temperature Measurements on Solids (open access)

Pressure-Volume-Temperature Measurements on Solids

From abstract: "The results of recent measurements on the equations of state of sodium and xenon are discussed. The experimental data for each of these are analyzed to show that the isothermal compressibility is solely a function of volume within experimental accuracy. The basic differences between the low temperature PV relationships for sodium and xenon are shown to be easily understandable in terms of the elementary theories of these substances. The range of experimental pressures (to 20 kbars) and temperatures (20°K to the triple point) is sufficiently great so as to produce significant changes in the lattice thermal properties in each case. These changes are indicated through the use of zero pressure heat capacity data in combination with the equation of state data to calculate the volume and temperature dependence of the Debye Θ. The result is quite spectacular for xenon, where a pressure of 20 kbars roughly doubles ΘD."
Date: May 14, 1963
Creator: Swenson, C. A.
Object Type: Report
System: The UNT Digital Library
Development of Pulsed Neutron Application to Power Reactor Start-Up Procedures. Fourth Quarterly Progress Report, January 1-March 31, 1963 (open access)

Development of Pulsed Neutron Application to Power Reactor Start-Up Procedures. Fourth Quarterly Progress Report, January 1-March 31, 1963

Activities in a program to develop techniques in the use of pulsed neutron sources to measure shutdown parameters related to large thermal power reactors are reported. The experimental work centers around aspects of detecting neutrons in the presence of 10/sup 7/ r/hr gamma fields. Boric acid experiments and Humboldt Bay experiments are reported.
Date: May 13, 1963
Creator: Garelis, Edward & Meyer, Paul
Object Type: Report
System: The UNT Digital Library
Spectrophotometric Determination of Perchlorate (open access)

Spectrophotometric Determination of Perchlorate

Technical report. Form Abstract : "Perchlorate is extracted from aqueous solution by n-butyronitrile as ferrous 1,10-phenanthroline perchlorate. The amount of perchlorate is calculated from spectrophotometric measurement of the absorbance of the extract. Moderate to large amounts of chloride, sulfate, or nitrate cause little or no interference. Chlorate is slightly extracted but the interference can be corrected."
Date: May 10, 1963
Creator: Fritz, James S. & Campbell, Patricia A.
Object Type: Report
System: The UNT Digital Library
Trimethyllactamide (open access)

Trimethyllactamide

Technical report. From "3. Methods of Preparation" : "Pivadehyde cyanohydrin can be prepared by the reaction of pivadehyde with anhydrous HCN2 or by the sodium bisulfite process. Trimethyllactamide can be prepared by hydrolysis of pivaldehyde cyanohydrin with cold concentrated sulfuric acid. The procedure described here differs in the scale of preparation an in the use of cold fusing hydrochloric acid for hydrolizing the cyanohydrin."
Date: May 9, 1963
Creator: Powell, Jack E.
Object Type: Report
System: The UNT Digital Library
Chemical Binding in the Water Molecule (open access)

Chemical Binding in the Water Molecule

From Introduction : "This analysis partitions the electron density and the electronic pair density of the molecule into components corresponding promoted atomic states, to quasiclassical coulombic interactions of these promoted states, and to interactions resulting from the sharing of electrons between atoms."
Date: May 3, 1963
Creator: Edmiston, Clyde & Ruedenberg, Klaus, 1920-
Object Type: Report
System: The UNT Digital Library
Mass Spectrometric Evidence for the Pyridoxal-Leucine Reaction Mechanism (open access)

Mass Spectrometric Evidence for the Pyridoxal-Leucine Reaction Mechanism

From Abstract : "The mass spectrum of leucine-dn, prepared by the reaction of pyridoxal with excess leucine in D2O medium, has been established using the crucible source techniques. ... The reaction can be used for the selective α, β-deuteration of amino acids other than leucine.
Date: May 3, 1963
Creator: Junk, G. A. & Svec, H. J.
Object Type: Report
System: The UNT Digital Library
Normal Elliptic Integrals of the First and Second Kinds (open access)

Normal Elliptic Integrals of the First and Second Kinds

From Introduction : "In this paper we describe a choice of normal elliptic integrals which appears to be very well suited for use in integral tables as well as for numerical work."
Date: May 3, 1963
Creator: Carlson, B. C.
Object Type: Report
System: The UNT Digital Library
Reinvestigation of the CC Stretching and CH3 Rocking Assignments In Isopropyl and tert-Butyl Halides (open access)

Reinvestigation of the CC Stretching and CH3 Rocking Assignments In Isopropyl and tert-Butyl Halides

From report: "In a series of paper (1-3) Sheppard has analyzed the vibrational spectra of simple alkyl halides. During the course of an investigation of the spectra of similar alkyl thiocyanates certain anomalies appeared in the assignments of the CC stretching and methyl rocking vibrations in isopropyl and tert.-butyl halides."
Date: May 3, 1963
Creator: Hirschmann, R. P. & Kniseley, R. N.
Object Type: Report
System: The UNT Digital Library
Studies of the Binding of Insulin to a Muscle Cell Membrane Preparation (open access)

Studies of the Binding of Insulin to a Muscle Cell Membrane Preparation

Recent studies suggest that the primary action of insulin is on the permeability of cell membranes. This idea may account for the effects of the hormone in broken cell preparations as well as in tissue preparations with intact cells if the concept of the cell membrane is broadened to include endoplasmic reticular extensions and the membranes of subcellular organelles. Following on the initial demonstration that insulin was bound to muscle and the elucidation of the structure of insulin, evidence was presented that this binding involves a sulfur-sulfur linkage between hormone and target tissue. In the present work, skeletal muscle cell ghosts were prepared for use in studying the chemical nature of the attachment of insulin to a relatively pure cell membrane preparation.
Date: May 3, 1963
Creator: Edelman, P. M.; Rosenthal, S. L. & Schwartz, I. L.
Object Type: Report
System: The UNT Digital Library
Electron Microscope Studies of Irradiated Beryllium Metal (open access)

Electron Microscope Studies of Irradiated Beryllium Metal

When beryllium is irradiated by fast neutrons, helium is produced by the (n,2n) and (n,α) transmutation reactions. Electron microscopy techniques have been used to study the nucleation and distribution of helium bubbles in several different grades of beryllium, after irradiation at temperatures in the range 75 — 700ºC. The effect of post-irradiation annealing is also reported. It is shown that for similar neutron doses and irradiation temperatures, there were wide variations in helium bubble size and distribution in specimens of beryllium fabricated by different methods. The most satisfactory material was that fabricated from Pechiney powder by direct hot extrusion followed by annealing for one hour at 800ºC and air cooling, it is suggested that the helium bubbles nucleate on second phase precipitates and that the distribution of this phase is strongly affected by fabrication and heat treatment.
Date: May 1963
Creator: Chute, J. H.
Object Type: Report
System: The UNT Digital Library
Fuel Element Experiments in SADE-VBWR Nuclear Superheat Loop (open access)

Fuel Element Experiments in SADE-VBWR Nuclear Superheat Loop

Abstract: Three irradiation experiments are described which have been designed to study the behavior of fuel elements in a reactors superheated steam environment. The experiments were conducted in the Superheat Advanced Demonstration Experiment loop, Vallecitos Boiling Water Reactor. The results obtained demonstrated that 304 stainless steel fuel clad in unsatisfactory for use in nuclear super heat fuel sheath designs where plastic strain or plastic deformation is allowed to occur. The results were in agreement with those reported for a previous experiment in SADE (SH-4B) and constituted the basis for change in direction of the superheat fuel program in regard to both design and fuel sheath selection.
Date: May 1963
Creator: Spalaris, C. N.; Raymont, W. R.; Lyons, M. F.; Evans, T. F.; Boyle, R. F.; Murdock, T. B. et al.
Object Type: Report
System: The UNT Digital Library
Heat Transfer to Superheated Steam (open access)

Heat Transfer to Superheated Steam

Abstract: The physical property variation of superheated steam differs sufficiently from most other gases to warrant experimental investigation of heat transfer performance. Results are reported here of measurements made in a uniformly heated circular duct with steam at 1000 psi. The data agree very well with the expression use for design purposes, which is based on information in the literature for heating of other gases as well as steam. This work was a continuation of that performed under Task (Heat Transfer) of the Nuclear Superheat Project, AEC Contract AT(04-3)-189, Project Agreement 13.
Date: May 1963
Creator: Sutherland, W. A. (William Alan), 1931-
Object Type: Report
System: The UNT Digital Library
Physics Calculations for the Consumers Big Rock Point Process Computer (open access)

Physics Calculations for the Consumers Big Rock Point Process Computer

The physics calculations to be performed on the Consumers On-Line Process Computer are reported. As a result of these calculations, a three-dimensional power shape is simulated, a reactivity balance is approximated, and the neutron exposure of each third of fuel bundle and control rod are accumulated. The work was reported as a part of the Consumers Research and Development Program.
Date: May 1963
Creator: Barth, N. H.
Object Type: Report
System: The UNT Digital Library
Radium and Mesothorium Poisoning and Dosimetry and Instrumentation Techniques in Applied Radioactivity (open access)

Radium and Mesothorium Poisoning and Dosimetry and Instrumentation Techniques in Applied Radioactivity

"The study of the toxicity of Ra and MsTh(Ra/sup 228/) in humans was continued. Several Thorotrast cases were also examined. Physical and clinical studies were made on 151 persons. In all cases possible gamma ray measurements were made of Ra and MsTh decay products retained in the body, alpha -ray measurements of Rn and Rn/sup 220/ in breath, a complete medical history was taken, a complete x-ray examination was made of the skeleton, and urinalysis, hematological, and blood chemistry studies were made."
Date: May 1963
Creator: Evans, Robley D.
Object Type: Report
System: The UNT Digital Library
Discussion of Quadrupole Precession (open access)

Discussion of Quadrupole Precession

From abstract: "In this paper the motion of a nucleus with an intrinsic quadrupole moment in an external electrostatic field gradient is discussed from a classical point of view. It is shown that in the classical approximation the angular momentum may precess about the direction of strongest field gradient or about the direction of intermediate field gradient, but not about the direction of weakest field gradient. The classical precession frequencies are found to be related to the quantum mechanical dipole transition frequencies."
Date: May 31, 1962
Creator: Raich, J. C. & Good, R. H. (Roland Hamilton), 1923-
Object Type: Report
System: The UNT Digital Library