UNT Libraries Government Documents Department - 32 Matching Results

Search Results

Results: 1 - 24 next
open access

THE (5-PHENYL-2-OXAZOLYL)PYRIDINES AS FLUORESCENT pH INDICATORS. AN APPLICATION TO CHEMICAL RADIATION DOSIMETRY

Description: The three isomeric (5-phenyl-2-oxazolyl)pyridines have been shown to be sensitive fluorescent pH indicators which show a pronounced change to increased visible fluorescence as the pH is lowered. Absorption and fluorescence spectral data and pK values are given. Selective excitation of fluorescence from the conjugate acid in the presence of the free base was found possible. The sensitivity of the 4-isomer was demonstrated to be adequate for determining the small amounts of acid produced in certa… more
Date: August 1, 1958
Creator: Ott, Donald G.
Item Type: Refine your search to only Report
open access

COMPRESSIBILITY FACTORS AND FUGACITY COEFFICIENTS CALCULATED FROM THE BEATTIE-BRIDGEMAN EQUATION OF STATE FOR HYDROGEN, NITROGEN, OXYGEN, CARBON DIOXIDE, AMMONIA, METHANE, AND HELIUM

Description: Compressibility factors and fugacity coefficients for hydrogen, niftrogen, oxygen, carbon dioxide, ammonia, methane, and helium were calculated by use of the Beattie-Bridgeman equation of state. The results are tabulated for various pressures up to several hundred atmospheres, and temperatures up to several hundred degrees, at sufficiently close intervals to allow for easy interpolation. A comparison is made of the calculated compressibility factors with the experimental values over those range… more
Date: August 1, 1958
Creator: Holley, C.E. Jr.; Worlton, W.J. & Zeigler, R.K.
Item Type: Refine your search to only Report
open access

Critical Experiments With 2.09% U$Sup 235$-Enriched Uranium Metal Plates in Water

Description: Experiments were performed with 2.09% U/sup 235/-enriched uranium metal plates in a light-water-moderated and -reflected assembly. Each plate was 30 in. long, 31/8 in. wide, and 1/4 in. thick and contained 7.09 kg of uranium. In the first assemblies the plates were arranged in rows with edges adjacent, and the spacing between rows was varied from 5/8 to 1 1/8in. The optimum spacing was about 7/8 in. With the spacing between rows maintained at 7/8 in., the spacing between the edges of the plates… more
Date: August 1, 1958
Creator: Fox, J. K.; Mihalezo, J. T. & Gilley, L. W.
Item Type: Refine your search to only Report
open access

Critical Parameters for Poisoned Annular Cylinders Containing Aqueous Solutions of U$Sup 23$$Sup 5$

Description: Experiments were performed to determine the critical parameters of aqueous solutions of 93.2% U/sup 235/-enriched uranyl fluoride contained in cylindrical annuli formed by various combinations of aluminum cylinders varying in diameter from 2 to 30 in. In all of the experiments the inside cylinder was lined with a 20-mil-thick cadmium sheet and filled with water to a height of 48 in., and in some experiments a water refiector was used on the sides and bottom of the outside cylinder. The data ind… more
Date: August 1, 1958
Creator: Fox, J. K. & Gilley, L. W.
Item Type: Refine your search to only Report
open access

EFFECT OF DENSELY IONIZING RADIATIONS ON DRY PREPARATIONS OF LYSOZYME, TRYPSIN, AND DNase

Description: The effects of beams of protons and alpha particles from the 60-inch cyclotron and beams of accelerated nuclei of heliuan-4, carbon-12, oxygen-16, and neon-20 from the linear accelerator on thin films of dried enzymes were measured. The experimental apparatus is described and results are presented graphically. (C.H.)
Date: August 1, 1958
Creator: Brustad, T.
Item Type: Refine your search to only Report
open access

Efficiencies and Photofractions for Gamma Radiation on Sodium Iodide (Thallium Activated) Crystals

Description: The efficiencies and photofractions for monoenergetic garnma raps incident on sodium iodide (thallium activated) crystals have heen calculated by the Monte Carlo method. The calculations have been carried out for broad parallel-beam sources, point sources on the crystal axis, and disk sources, all for photon energies of 0.279, 0.861, 1.33, 2.82, and 4.45 Mev. The crystals considered were right circular cylinders with radii of radius, heights of 1.0, 2.0, 4.0, and 8.0 inches. The effect of the e… more
Date: August 1, 1958
Creator: Miller, W. F.; Reynolds, J. & Snow, W. J.
Item Type: Refine your search to only Report
open access

A Flow Visualization Loop for Flow Pattern Studies in Reactor Models

Description: The installation of a milling yellow flow visualization loop has been completed. Milling yellow is an organic dye which when dissolved in water exhibits flow double refracting properties that permit visual observations of flow patterns. The equipment is to be used in qualitative studies of flow patterns in various models of reactor vessels and components. (auth)
Date: August 1, 1958
Creator: Mixon, W.R. & MacColl, H.A.
Item Type: Refine your search to only Report
open access

HRP-CPP: Dissolution of Zirconium and stainless steel corrosion product oxides

Description: Dissolution methods were developed to permit representative sampling of the slurry of corrosion and fission products collected by the HRT chemical process-ing plant. The procedure selected for HRT-CPP application was to use 15 ml of 10.8 M H/sub 2/SO/sub 4/ per gram of solids with agitation by boiling in a tantalum-lined dissolver. (auth)
Date: August 1, 1958
Creator: Snider, J. W. & Haas, P. A.
Item Type: Refine your search to only Report
open access

HYDROGEN AND OXYGEN ISOTOPES APPLIED TO THE STUDY OF WATER-METAL REACTIONS. EXCHANGE OF D$sub 2$O$sup 18$ WITH ALPHA ALUMINA MONOHYDRATE

Description: Isotopes of hydrogen and oxygen may be useful in elucidating the mechanism of aqueous corrosion reactions, in which an important step may be diffusion of protons and/or hydroxyl for oxide) ions through a thin protective film. The technique of isotope exchange and the kinetic isotope effect both appear applicable. For the reaction between water and aluminum, the product (above 90 deg C) is alpha -alumina monohydrate ( alpha -AlCDH). The exchange of D/sub 2/O/sup 18/ with alpha -AlOOH (sub-micron… more
Date: August 1, 1958
Creator: Bernstein, R.B.
Item Type: Refine your search to only Report
open access

Impurities in Reclaimed Lead Castings

Description: The nature of impurities found in reclaimed Pb and the effects of their inclusion in castings were investigated. It was concluded that impurities are difficult to remove and may result in unwanted casting characteristics. Recommendations for Pb reclamation are listed. (J.R.D.)
Date: August 1, 1958
Creator: Shepherd, D. M.
Item Type: Refine your search to only Report
open access

INSTALLATION AND INTERFERENCE PROBLEMS IN REACTOR INSTRUMENTATION SYSTEMS

Description: Reactor control instrumentation systems may be subject to a variety of extraneous signals. Five types are discussed: signals involving high-frequency components which may gain access to critical circuits through wiring that lacks suitable RF filtering; current signnls due to mechanical shocking or flexing of cables; extraneous ion chamber signals, including displacement currents due to fluctuations in the polarizing voltage, as well as currents caused by mechanically induced changes in ion cham… more
Date: August 1, 1958
Creator: Brookshier, W.K.
Item Type: Refine your search to only Report
open access

Irradiation of Prototype CP-4 (EBR-I) Reactor Fuel Slugs in the CP-3' Goat Hole. Final Report of Metallurgy Division Program 6.1.1.

Description: Experiments are described which studied the effect of irradiation upon small U/sup 235/ cylinders simulating in size those designed for thc initial CP-4 (EBR-I) fuel loading. Qualitative similarities between thermal cycling and irradiation effects were found, but none of the three types of inaterial tested were entirely dimensionally stable. (auth)
Date: August 1, 1958
Creator: Paine, S. H.; Persiani, P. J. & Murphy, W. F.
Item Type: Refine your search to only Report
open access

Low-Speed Wind-Tunnel Tests of a 1/8-Scale Model of the Bell D-188A VTOL Airplane

Description: Report discussing the results of an investigation to determine the low-speed power-off stability and control characteristics of a model of the Bell D-188A VTOL airplane. The static stability and control characteristics were generally satisfactory except above certain angles of attack and aileron effectiveness dropped off as the angle of attack was increased. Modifications for increasing the directional stability by altering the vertical tails are also described.
Date: August 1, 1958
Creator: McKinney, Marion O. & Smith, Charles C., Jr.
Item Type: Refine your search to only Report
open access

On the Calculation of Properties of Gases at High Temperatures. Technical Report No. 2

Description: The role of the potential of intermolecular force in determining properties of gases at elevated temperatures is discussed. Coefficients of viscosity and selfdiffusion, isotopic reduced themaal diffusion ratios, and second virial cofficients for helium, argon, and nitrogen at 1,000, 5,000, and 15,000 d K were calculated from extrapolated potentials and from beam potentials. (W.D.M.)
Date: August 1, 1958
Creator: Amdur, I. & Ross, J.
Item Type: Refine your search to only Report
open access

PROGRESS RELATING TO CIVILIAN APPLICATIONS DURING JULY 1958

Description: Data are given on the thermal ccnductivity of Ti--6 wt. % Al--4 wt.% V. The creep strength of 15% cold-worked Zircaloy-2 is being determined for reactor components in the 290 to 400 deg C range. Nine serles of high-strength corrosion- resistant Zr alloys were prepared and corrosion tested. Results are included. The fabrication of Al-U alloys for uses in various reactors is presented. The development of a natural-U fuel alloy with improved corrosion resistance is presented. Results of corrosion … more
Date: August 1, 1958
Creator: Dayton, R.W. & Tipton, C.R. Jr.
Item Type: Refine your search to only Report
open access

Progress report - bonding of DATB - progress report

Description: DATB (diaminotrinitrobenzine) pressings were made in an effort to find the most suitable binder. After successfully pressing ball milled DATB at 110 C,it was found that normal DATB (fine powder) could also be hot pressed at this temperature and 20,000 psi. Bulk density might vary from batch to batch.
Date: August 1, 1958
Creator: Archibald, P.
Item Type: Refine your search to only Report
open access

SALT-LUBRICATED HYDRODYNAMIC JOURNAL BEARING TESTS NOS. 1 AND 2

Description: The results of the hydrodynamic journal type bearing phase of the salt- lubricated bearing development program at Oak Ridge National Laboratory are given. One test each of two hydrodynamic journal type bearings constructed or INOR-8 versus INOR-8 was performed with molten salt #130 (62 LiF, 37BeF, 1 UF/sub 4/ mole %) at 1200 deg F as the lubricant. The first bearing operated for twenty minutes and the test was terminated due to seizure of the bearing and journal. The second bearing operated for… more
Date: August 1, 1958
Creator: Smith, P.G.
Item Type: Refine your search to only Report
open access

THE SAMPLING ESTIMATE OF THE PARAMETER VARIANCE/MEAN IN REACTOR FLUCTUATION MEASUREMENTS

Description: Reactor properties can be investigated by observing fluctuations in the numober of counts occurring in a fixed time-interval in a neutron counter. The statistical parameter variance/mean of the count population may be estimated from the observed statistic N(N-l!/sup -1/ x variance/mean calculated for a sample of counts obtained in N time-intervals. It is shown that this method of estimation is biased, and a bound is derived for the magnitude of the bias. The bias can be severe when N is small a… more
Date: August 1, 1958
Creator: Harris, D. R.
Item Type: Refine your search to only Report
open access

Space- and Time-Dependent Flux Oscillations (and Instability) in Thermal Reactors Due to Nonuniform Formation and Depletion of Xenon

Description: A theoretical treatment of the space- and timedependent flux oscillations in an annular seed-blanket reactor due to nonuniform formation and depletion of xenon is developed by a linearized treatment. The distinction between coupling within the seed and through the central blanket is brought out in the analysis. These results are compared to a four-point model of the seed blanket reactor. The unity of various methods of analysis is shown by the use of the concept of a xenon ''transfer function.'… more
Date: August 1, 1958
Creator: Wick, R. S.
Item Type: Refine your search to only Report
open access

Strontium Program: Summary Report for June and July 1958

Description: Technical report was prepared by the Health and Safety Laboratory (HASL) with the objective of presenting a current picture of the Strontium Program. Abstract: Strontium 90 levels in fallout, milk, canned fish and tap water are summarized for data available up to July 28, 1958. Original data submitted during the month of June and the first two weeks in July are included as an appendix. Data are presented to show the amount of Strontium 90 in fallout at sampling stations within and outside th… more
Date: August 1, 1958
Creator: Hardy, Edward P., Jr.
Item Type: Refine your search to only Report
open access

Studies of Reactor Containment. Task No. 6 on Explosives Test Evaluation of Blast Shields for Nuclear Reactors. Report No. 1. A Technique for the Observation and Measurement of the Behavior of Porous Materials When Rapidly Compressed

Description: The technique described may be used to obtain data regarding the behavior of porous media when they are rapidly compressed. Data which can be obtained include relationships between stress and strain under dynamic conditions, coefficients of restitution, compression wave velocities, decay rates and wave form modifications. Although there is still room for improvement and refinement, the present technique can be used to produce data needed by, and not previously available to, designers of blast s… more
Date: August 1, 1958
Creator: Napadensky, H. S.; Pinsky, J. & Stresau, R.
Item Type: Refine your search to only Report
Back to Top of Screen