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Atomic Energy Commission Reports
2,881
Hanford Works Reports
844
University of California Radiation Laboratory Reports
719
HW (Series)
599
Oak Ridge National Laboratory Reports
521
Brookhaven National Laboratory Reports
520
BNL (Series)
519
UCRL (Series)
300
AECU (Series)
288
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224
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6,083 Matching Results
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Crystallography of Some of the Transition Element Beryllides
A crystallographic study of the transition element beryllides was undertaken in support of phase diagram work. These beryllides are very high melting, and the use of ordinary methods make it difficult to determine stoichiometry. We have succeeded in establishing the compositions and complete crystal structure description of all of the room temperature stable or metastable compounds of the beryllides of niobium, tantalum, titanium zirconium, hafnium, vanadium, chromium and molybdenum. Since some of the structures found were not previously reported, complete structure determinations had to be done.
Date:
May 24, 1960
Creator:
Zalkin, Allan, 1926- & Sands, Donald, 1929-
Object Type:
Report
System:
The UNT Digital Library
The Crystal Structure Of Cobalt Sulfate Hexahydrate
Calorimetric measurements by Rao and Giauque (1960) showed some unaccountable residual entropy in crystals of [formula] at low temperatures. We have investigated the crystal structure in search of an explanation of the disorder. The resulting structure offers no possibility of disordered rings of hydrogen bonds such as were found in [formula], nor do we find any other explanation of the entropy discrepancy.
Date:
August 1961
Creator:
Zalkin, Allan; Ruben, Helena & Templeton, David H.
Object Type:
Report
System:
The UNT Digital Library
A Study of the Mechanisms of Protein and Nucleic Acid Metabolism and Their Relationship to Radiation Damage
None
Date:
1960
Creator:
Zamecnik, Paul
Object Type:
Report
System:
The UNT Digital Library
High Pressure Pump Seal Development
"Results of tests indicate that the nucerite-bearium seal system is compatible. This combination was operated as long as 9 hours without serious damage. In other work, the test rig was modified to eliminate pressure fluctuations and extraneous dirt, and Type IIA seal parts were designed."
Date:
June 11, 1962
Creator:
Zanoni, P. J.
Object Type:
Report
System:
The UNT Digital Library
High Pressure Pump Seal Development
"Test results indicated that graphite is not suitable for seal face material. A program to evaluate various materials and seal face geometries was initiated. A seal run using nucerite-bearium combination was carried on for six hours."
Date:
March 5, 1962
Creator:
Zanoni, P. J.
Object Type:
Report
System:
The UNT Digital Library
Radiochemistry 3
Report discussing a general introduction to heavy element chemistry.
Date:
April 15, 1948
Creator:
Zebroski, E. L.
Object Type:
Report
System:
The UNT Digital Library
Fluorescence Analysis for Uranium
From abstract: "An adaptation of a colorimeter for the rapid estimation of small amounts of uranium to ± 5% by fluorescence of a sodium fluoride bead or fluoride-carbonate melt is described. Solutions containing from 0.1 to 1000 micrograms per milliliter may be tested directly. The limit of visual detection on a 20 mg. bead is about 0.0003 microgram of uranium. A periodic chart of interferences is presented. The strangest interferences center around the latter parts of each transition series of elements."
Date:
1946
Creator:
Zebroski, E. L.; Newton, T. W. (Thomas William), 1923- & Ripple, F. T.
Object Type:
Report
System:
The UNT Digital Library
Radiochemical Analysis of Crud from the Army Package Power Reactor
Abstract: A study has been made of the radiochemical composition and the specific activity of insoluble corrosion products (crud) removed from the primary system of the APPR-1. This report presents the results of analysis of twelve crud samples collected during the interval from September 3, 1957 to December 1, 1957. The samples were radiochemically analyzed for long-lived gamma emitting nuclides only. Data are presented on the measured values of the specific activity of crud, the ratios of the nuclide specific activities, and the concentration of crud (crud level) in the circulating primary water. Also included in data, based on the analysis of a single sample, comparing the specific activity of the deposited and circulating corrosion products.
Date:
February 15, 1958
Creator:
Zegger, J. L.; Small, W. J. & Brown, W. S.
Object Type:
Report
System:
The UNT Digital Library
Decontamination Program Task II. Volume 1, Contamination and Decontamination in Nuclear Power Reactors
Abstract: A survey of the problem of reactor system contamination by radioactive material and methods that have been employed to remove the material was carried out. Following this survey, an investigation of chemical solutions was undertaken to find one which might be successfully employed in the decontamination of a stainless steel steam generator. From a preliminary screening, the most promising chemical method from the view point of minimum corrosion and maximum decontamination is a caustic permanganate treatment followed by and acid rinse.
Date:
February 13, 1959
Creator:
Zegger, John L. & Pancer, Guyon P.
Object Type:
Report
System:
The UNT Digital Library
Decontamination Program Task II. Volume II, Evaluation of Chemical Agents for Nuclear Reactor Decontamination
Abstract: The caustic permanganate-rinse decontamination treatment was investigated. Loop and metallurgical studies were performed to determine optimum operating conditions as well as the metallurgical effects of the treatment. A treatment with 10 percent sodium hydroxide and 5 percent potassium permanganate solution followed by a rinse with a 5 percent ammonium citrate, 2 percent citric acid and 1/2 percent Versene solution was chosen for the decontamination of a stainless steel steam generator. Decontamination factors of greater than 50 were obtained in loop tests using the above treatment. Corrosion and metallurgical results indicated a total penetration of less than 0.01 mil on annealed Type 304 stainless steel with no evidence of any deleterious effects.
Date:
February 15, 1959
Creator:
Zegger, John L. & Pancer, Guyon P.
Object Type:
Report
System:
The UNT Digital Library
Nitrogen in Titanium Carbide and Titanium Tungsten Alloys
Production of titanium hard alloys has been considerably developed in recent years. Practical achievements are far ahead of investigations in the field of metallography and technological processes of these essential alloys.
Date:
November 1, 1950
Creator:
Zelikman, A. N. (Abram Naumovich); Loseva, S.S. & Tseytina, N. Ya
Object Type:
Report
System:
The UNT Digital Library
Revie of "The Theory of Shock Waves and a Introduction to Gas Dynamics"
An introduction to the theory of explosions from the standpoint of militrary implications.
Date:
1946
Creator:
Zelʹdovich, I︠A︡. B. (I︠A︡kov Borisovich)
Object Type:
Report
System:
The UNT Digital Library
Cytochemistry of Delayed Radionecrosis of the Murine Spinal Cord
In the vast field of radiation pathology we find pathologists, anatomists, and even physiologists busily at work, but the radiobiologist is conspicuously absent, although, according to Zirkle (1959), this field is clearly within his domain. Perhaps it is wise to take this broad hint of the scientifically so well equipped radiobiologist and to stay clear from an area in which an incalculable array of variables makes clearcut experimentation a hopeless venture, a priori. Perhaps it would be better if the pathologist, who must study pertinent material, restricts himself humbly to the recording of his observations, refraining from any attempt at interpretation. On the other hand, since seemingly audacious speculation has borne fruit in the past and the value of the information that results, if the speculation proves to be correct, is worth many times the effort, there is obvious justification for a thesis on the mechanism of delayed radionecrosis.
Date:
October 15, 1963
Creator:
Zeman, Wolfgang
Object Type:
Report
System:
The UNT Digital Library
Thin Film Measurements by X-Ray Emission Spectrography
When a beam of X-rays penetrates through a layer of material, the intensity of the beam is reduced by absorption. some of the energy that has been absorbed may be re-emitted as X-ray quanta, by the atoms that absorbed it, at a wavelength characteristic of the emitting atom but longer than the quantum absorbed. Four methods of measuring thin films that use X-ray emission apparatus have been described, each of which is useful over a limited range of thickness, and for certain kinds of samples.
Date:
1963
Creator:
Zemany, P. D.
Object Type:
Report
System:
The UNT Digital Library
Photoconductivity of Some Intermetallic Compounds
The article discusses the photoconductivity possessed by the intermetallic compounds of fixed composition, ZnSb and Mg3Sb2 and their spectral distribution of photoconductivity is measured.
Date:
July 26, 1948
Creator:
Zhuze, V. P. (Vladimir Panteleĭmonovich); Mochan, I. V. & Ryvkin, S. M. (Solomon Meerovich)
Object Type:
Report
System:
The UNT Digital Library
The Kinetics of Heterogeneous Exchange Reactions
The change of position between one chemically bound atom and another is designated as an exchange reaction. Time laws for these three processes in the case of reversible reactions are derived and discussed
Date:
June 6, 1945
Creator:
Zimens, Karl-Erik & Feldman, C.
Object Type:
Report
System:
The UNT Digital Library
Corrosion Test of Type 502 Stainless Steel
The following report provides complete data and test procedure from hot water corrosion tests of type 502 stainless steel.
Date:
August 13, 1952
Creator:
Zimmerman, D. L.
Object Type:
Report
System:
The UNT Digital Library
The Argonne Heavy Water Reactor (CP-3 Prime)
The following document provides figures with all information that describe the heavy water moderated chain reacting pile at Argonne National Laboratory.
Date:
August 10, 1951
Creator:
Zinn, Walter H.
Object Type:
Report
System:
The UNT Digital Library
The Quantitative Estimation of the Activity of Beta Particle Emitters
From abstract: "In estimating the activities of β-emitting materials used in the Biology Section, most measurements were made with Geiger-Mueller counters, although Lauritsen electroscopes were used in early work. All samples were mounted on flat porcelain capsules."
Date:
October 3, 1946
Creator:
Zinn, Walter H. (Walter Henry), 1906-2000; Broido, Abraham; Nordeen, Clifford & Himmelstein, Sheldon H.
Object Type:
Report
System:
The UNT Digital Library
A New Method for the Electrochemical Extraction of Polonium
The article points out the inconveniences of conducting polonium extraction in a closed system. The experiment conducted is aimed at the discovery of a new method of extraction of polonium concordant with the need.
Date:
1939
Creator:
Ziv, D. M.
Object Type:
Report
System:
The UNT Digital Library
Periodic Law of Atomic Nuclei Isotopes at the End of the Periodic System
The discovery of the periodic system of atomic nuclei has enabled not only the ability to predict isotopes which have not yet been found and to define their properties.
Date:
September 3, 1949
Creator:
Znoyko, A. P.
Object Type:
Report
System:
The UNT Digital Library
Physical and Chemical Properties of Particles
Electron microscopy is invaluable in determining the organization of the bacterial cell. In Fig. 1 we see an electron micrograph of a thin section of a single cell of Escherichia coli. There are three prominent regions: (1) the bacterial membrane, (2) the centrally located sparse region in which thin fibrils of DNA are located, and (3) the main body of the cell with densely packed particles. All the particles in the latter area are probably ribosomes. This paper will focus attention on the structure and function of ribosomes and nucleic acids directly involved in the protein synthesis in E. coli. In fig. 2 a cell segment containing ribosomes is compared with a purified preparation of 70 Svedberg (S) and 100S ribosomes at the same magnification. Most ribosomes in the bacterium are similar in size to the 70S ribosome: further work on this point is in progress.
Date:
1962
Creator:
Zubay, G. & Bergeron, J.
Object Type:
Report
System:
The UNT Digital Library
The Effects of Non-Uniform Flow and Concentration Distributions and the Effect of the Local Relative Velocity on the Average Volumetric Concentration in Two-Phase Flow
Abstract: A general expression which can be used either for predicting the average volumetric concentration or for analyzing and interpreting experimental data is derived. The analysis takes into account both the effect of non-uniform flow and concentration profiles as well as the effect of the local relative velocity between phases. The first effect is taken into account by a distribution parameter, whereas the latter is accounted for by the weighted average drift velocity.
Date:
April 1964
Creator:
Zuber, N. & Findlay, J. A.
Object Type:
Report
System:
The UNT Digital Library
Survey of Component Requirements and Availability for Gas-Cooled Nuclear Reactor Power Plants
"Helium, nitrogen, carbon dioxide, and other gases suitable as reactor coolants were evaluated. It is shown that because of the helium conservation program, recently authorized by legislation, sufficient helium will become available for domestic power plants and for the requirements of the Euratom group. Tables of thermodynamic properties for helium and molecular nitrogen were computed from the Beattie-Bridgman equation of state. Specific enthalpy, specific entropy, isobaric specific heat, specific heat ratio, compressibility factor, specific volume, and acoustic velocity are tabulated over the range helium and molecular nitrogen are given."
Date:
June 1961
Creator:
Zudans, Zenons & Goff, John A.
Object Type:
Report
System:
The UNT Digital Library