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in subjects: "Nitrogen Compounds"  
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High-Frequency Titration as Applied to the Determination of Thorium, Uranium, Sulfate, and Free Acid. Parts 1-51

Description: The technique of high-frequency titrimetry was applied to the determination of thorium, uranium, sulfate, and free acid. In Part I, the reproducibility of the method for the titration of standard solutions that contained 50 rag of thorium in the absence of interferences is established. Under these conditions, the coefficient of variation of the method was <1%. In Part II, the effect of uranium on the highfrequency titration of thorium, as well as the application of the method to actual samples,… more
Date: May 11, 1959
Creator: Menis, O
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Effects of Indoleacetic Acid and Kinetin on the Growth of Some Microorganisms

Description: Data are presented from a study of the effects of indoleacetic acid and kinetin on the growth of Amoeba proteus, Escherichia coli, and two species of yeast. Data are tabulated and reaction mechanisms are discussed. 95 references. (C.H.)
Date: March 31, 1959
Creator: Kennell, D.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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Some Physical and Chemical Properties of Scandium and the Rare Earths

Description: Conductances, densities, partial molal volumes, solubilities, and transference numbers were measured for scandium chloride, nitrate, and perchlorate. The stability constants of the chelates formed by the rare earths and scandium with ME(l,2-bis- STA2-di(carboxymethyl)aminoethoxy!ethane) and DE(2,2 -bis- STAdi(carboxymethyllaminoldiethyl ether) were measured polarographically. In addition, the stability constants of the scandium chelates of HEDTA (N -hydroxyethyl)-ethylenediamine-N,N,N -triaceti… more
Date: July 1, 1959
Creator: Hiller, M. A. & Powell, J. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Spectrophotometric Determination of Copper in Yttrium Metal With Neocuproine

Description: The neocuproine colorimetric method was applied to the determination of copper in yttrium metal. From 5 to 80 - g of copper was determined in the presence of as much as 5OO mg of yttrium with a coefficient of variation of 2%. Copper was reduced to copper (I) with hydroxylamine and complexed with neocuproine (2,9-dimethyl-1,10-phenanthroline). The colored complex was extracted into chloroform and its absorbance measured, after dilution with ethanol, at 457 m - . (auth)
Date: April 21, 1959
Creator: White, J. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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High-Precision Determinations by Means of High-Absorbancy Spectro- Photometric Method. Application to the Determination of Cobalt in Aluminum

Description: High-absorbancy spectrophotometry was applied to the precise determination of about 0.15% cobalt in aluminum by the 1-(2-pyridylazo)-2- naphthol method. The absorbancies of sample aliquots were measured versus a standard containing 50 mu g of cobalt. The relative concentration error for a single measurement, assuming a 1% transmittancy error, is 0.93% and the coefficient of variation of 5 cobalt determinations is 0.5%. (auth)
Date: April 13, 1959
Creator: Menis, O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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CONCENTRATION AND FINAL PURIFICATION OF NEPTUNIUM BY ANION EXCHANGE

Description: It was demonstrated that neptunium(IV) can be readily absorbed onto anion exchange resins from 6 M HNOsub 3/ containing ferrous sulfamate and hydrazine or semicarbazide, separated from plutonium, uranium, and common metallic impurities by washing the resin at 25 deg C with 6 M HNO/sub 3/ containing ferrous sulfamate and hydrazine or semicarbazide, separated from fission products and thorium by washing the resin at 60 deg C with S M HNO/sub 3/- 0.01 M HF containing hydrazine or semicarbazide, an… more
Date: February 10, 1959
Creator: Ryan, J. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Recent developments in feed preparation and solvent extraction

Description: For presentation at the 5th Nuclear Congress, Clevelands Apr. 7, 1959. Increasing emphasis has been placed recently on the application of solvent extraction to the recovery of uranium and plutonium from spent power reactor fuels. Zircaloy-2 jackets were removed from PWR blankettype fuels by dissolution with the Zirflex Process, and the UO/sub 2/ cores were dissolved in 10 M HNO/sub 3/. Zirflex treatment of prototype samples irradiated to 2500 Mwd/ ton resulted in satisfactory dissolution rates … more
Date: March 20, 1959
Creator: Bruce, F. R.; Blanco, R. E. & Bresee, J. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

INDIRECT ACTION OF IONIZING RADIATION ON SOME ORGANIC COMPOUNDS CONTAINING THE C-N BOND

Description: Observations on the indirect action of ionizing radiation on compounds containing primary amine, secondary amines N-alkylamides and peptide-bond eonfigurations are correlated in terms of related mechanisms involving the C-N linkage as the locus of chemical change. The radiation chemistry of aqueous solutions of various amino acids and proteins is considered in detail from this viewpoint. Effects of oxygen and other solutes are discussed. Particular reference is given to: (a) studies of the radi… more
Date: April 1, 1959
Creator: Garrison, W. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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