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Determination of Free Nitric Acid in UNH Solutions, Problem Assignment No. 208-X2A, Progress Report

Description: Technical report abstract: Since UNH is a highly dissociated compound which ionizes to NO3 and (UO2), the latter ion being very weakly basic, a solution of pure UNH is quite acid (pH about 3). It is possible to titrate to a phenolphthalein and point with standard caustic solution and obtain a figure which represents the free acid plus the NO3 from the the UNH. However, titration of the free nitric acid alone in such a solution presents quite a problem. By precipitating and removing uranium fro… more
Date: April 21, 1944
Creator: Parlour, A. K. & Hammond, C. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Carbon 14 from Lead Nitrate

Description: Report describing the production of carbon 14 from Pb(NO3)2 in the Oak Ridge Nuclear Reactor via the reaction N14 (n.p.) C14.
Date: 1949
Creator: Goodman, Martin R. & Longacre, Andrew, 1904-
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The System Uranium-Nitrogen

Description: Report discussing experiments in which the uranium-nitrogen system was "subjected to chemical and x-ray study." The results of these studies "require that previously published descriptions of the system and formulas for the nitrides be replaced."
Date: 1948
Creator: Rundle, Robert Eugene; Baensigur, N. C.; Newton, A. S.; Deane, A. H.; Butler, T. A.; Johns, I. B. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Investigation of induced unimolecular decomposition for development of visible chemical lasers. Quarterly progress report, 1 May 1976--1 August 1976

Description: Progress during the first quarterly period of the subject contract is summarized. A technical review of the azide literature has essentially been completed. A number of interesting reactions of azides which potentially lead to electronic excitation have been identified. However, uncertainties in state-specific mechanisms, branching ratios, and rate constants do exist. To evaluate the potential of azide chemistry for a short wavelength laser, an experiment is being designed to determine some of … more
Date: August 1, 1976
Creator: Piper, L G & Taylor, R L
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Synthesis, scale-up, and characterization of 2,6-diamino-3,5-dinitropyrazine-1-oxide (LLM-105)

Description: We have synthesized 4OOg of the new, insensitive, energetic heterocycle, 2,6-diamino-3,5-dinitropyrazine-l-oxide (LLM-105) with 81% the energy of HMX and excellent thermal stability. The synthesis is a three step reaction sequence from the commercially available starting material, 2,6-dichloropyrazine, with an overall yield of 36%. In this paper we will describe the scale-up of the synthesis of LLM- 105 and report on performance and shock sensitivity experiments performed on this material.
Date: April 27, 1998
Creator: Pagoria, P. F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A diethyl phosphonate containing oxazoline: Synthesis and characterization of monomer and homopolymer

Description: A diethyl phosphonate oxazoline monomer and its polymer have been synthesized. The monomer appears to polymerize via a ring-opening mechanism giving the expected polyethyleneimine backbone with pendant carbonyl groups. Two distinct molecular weights were produced during polymerization suggesting two mechanisms of chain growth. Studies are underway to elucidate the reasons for this. This polymer has potential as a metal-chelating agent.
Date: May 1, 1995
Creator: Hermes, R.E.; Thompson, R.D. & Valdez, L.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Quantum symmetry and photoreactivity of azabenzenes

Description: The fundamental processes associated with a photochemical reaction are described with reference to experimental properties of azabenzenes. Consideration of both excitation and relaxation processes led to presentation of the symmetry propagator, a unifying principle which maps system fluctuations (perturbations acting on an initial state) with dissipations (transitions to different states), thus directing the energy flow along competing reactive and nonreactive pathways. A coherent picture of re… more
Date: June 1995
Creator: Chesko, J. D. M.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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The MAP3S Aerosol Sulfate Acidity Network: A Progress Report and Data Summary, November 1981

Description: Abstract: A network of five atmospheric aerosol samplers was established in the northeastern US starting in February 1977. Size-fractionated samples of the aerosol were collected continuously with four-hour time resolution until the network was dismantled in February 1980. The aerosol-loading and aerosol-chemistry data obtained over this three-year period are summarized in this report. In particular, the samples were analyzed for the sulfate acidity of the aerosol. The acidity was found to be q… more
Date: November 1981
Creator: Johnson, S. A.; Kumar, R.; Cunningham, P. T. & Lang, T. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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vic-Dioximes as Analytical Reagents

Description: A review of research that has contributed to a better understanding of the solubility relations among vicdioximes is presented. Included are sections on synthesis, analysis, structure, and analytical uses of these complexes (J.R.D.)
Date: March 1, 1962
Creator: Banks, Charles V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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CONTROLLED-POTENTIAL COULOMETRIC TITRATION OF URANIUM(VI) IN THE PRESENCE OF NITRATE

Description: A study into the use of sulfamic acld as a nitritedestroying reagent in the controlled-potentlal coulometrlc tltratlon method for uranlum(VI) was made. When nltrites are thus destroyed, the tltration ls much less subject to error from HNO/sub 3/. The results of titratlons of known amounts of uranlum(VI) in the presence of varlous amounts of HNO/sub 3/, Th(NO/sub 3/)/sub 4/, Al(NO/sub 3/ )/sub 4/, and LiNO/sub 3/ are given. (auth)
Date: January 17, 1962
Creator: Shults, W.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Heat of detonation, the cylinder test, and performance munitions

Description: Heats of detonation of CHNO explosives correlate well with copper cylinder test expansion data. The detonation products/calorimetry data can be used to estimate performance in the cylinder test, in munitions, and for new molecules or mixtures of explosives before these are made. Confidence in the accuracy of the performance estimates is presently limited by large deviations of a few materials from the regression predictions; but these same deviations, as in the insensitive explosive DINGU and t… more
Date: January 1, 1989
Creator: Akst, I.B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Radiation Chemistry of Synthetic Waste

Description: The yield of hydrogen from radiolysis of aqueous solutions is substantially reduced by the presence of nitrate and nitrite in the waste solutions. Nitrate is more efficient in scavenging the precursors to hydrogen than is nitrite, therefore, the latter should be maintained at higher levels if minimization of radiolytic gas production is required. Nitrate is the major scavenger for e(sub aq)(sup (minus)) and nitrite is the major scavenger for H atoms. At the concentration levels of the waste sol… more
Date: November 1991
Creator: Meisel, Dan; Diamond, H.; Horwitz, E. P.; Jonah, Charles D.; Matheson, Max S.; Sauer, M. C. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Electrochemically-modulated liquid chromatography (EMLC): Column design, retention processes, and applications

Description: This work describes the continued development of a new separation technique, electrochemically-modulated liquid chromatography (EMLC), from column design, retention mechanisms to pharmaceutical applications. The introduction section provides a literature review of the technique as well as a brief overview of the research in each of the chapters. This section is followed by four chapters which investigate the issues of EMLC column design, the retention mechanism of monosubstituted aromatic compo… more
Date: October 8, 1997
Creator: Ting, E. Y.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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Formation of Nitrogen Oxides by Alpha Particle Irradiation of the System N₂-CO₂

Description: Abstract: "The reaction between nitrogen and carbon dioxide, under irradiation with 40 Mev alpha particles from the Berkeley 60 inch cyclotron, was studied at gas temperatures near 50 C and total pressures of about 600 millimeters of Hg, contained in Pyrex capsules. The range of gas compositions investigated included the pure components, as well as mixtures with and without trace oxygen. In all mixtures, a steady state concentration of nitrogen oxides of about 0.15 millimeter was reached after … more
Date: March 24, 1953
Creator: Steidlitz, M. E. & Feldman, M. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Calculation notes in support of ammonia releases from waste tank ventilation systems

Description: Ammonia is generated in waste tanks via the degradation of nitrogen compounds. The ammonia is released from the liquids by a mechanism which is dependent on temperature, pH, ionic strength and ammonia concentration. The release of ammonia to the environment occurs via diffusion of ammonia through a stagnant air mass and into the ventilation system.
Date: September 5, 1996
Creator: Wojdac, L. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Bibliography of mass spectroscopy literature for 1973 compiled by a computer method. Bibliography and author index. [About 8,000 citations]

Description: This report covers the year 1973, and lists approximately 8,000 articles of interest to mass spectroscopists. This report consists of three sections, a Bibliography section, an Author Index section and a Key Word Out of Context Index (KWOC Index) section. The Bibliography section lists the authors, the title and the publication data for each article. The Author Index lists the authors' names and the reference numbers of their articles. The KWOC Index lists the key words, the reference numbers o… more
Date: June 1, 1976
Creator: Capellen, J.; Svec, H. J.; Sage, C. R. & Sun, R. (comps.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Studies of Nitrogen-containing Compounds Having Pyrethroid-like Bioactivity

Description: During recent years most of the successful developments in pyrethroids have been primarily concerned with structural or compositional variations. As a part of our continuing interest in pyrethroid insecticides, nitrogen-containing compounds having pyrethroid-like structures were synthesized. Seven prolinate compounds, N-(substituted)-phenyl-prolinates and N-carbobenzoxy-prolinates were coupled with known pyrethroid alcohols. These structural variations which "locked in" a specific conformation … more
Date: August 1989
Creator: Lee, Jimmy Jing-Ming, 1955-
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Determination of the Forms of Nitrogen Released in Coal Tar During Rapid Devolatilization. Semi-Annual Report, May 1-October 31, 1997

Description: The primary objective of this work is to determine the forms of nitrogen in coal that lead to nitrogen release during devolatilization. Experiments are to be performed in two existing laminar flow reactors available at Brigham Young University, which are both capable of temperatures (up to 2000 K), particle heating rates (104 to 105 K/s), and residence times (up to 500 ms) relevant to conditions commonly encountered in industrial pulverized coal combustors. The forms of nitrogen in coal, char, … more
Date: October 31, 1997
Creator: Fletcher, T. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Homogeneous Production and Removal of NO/sub x/ From Combustion Exhaust Gases. Sixth Quarterly Technical Summary Report

Description: The final reaction rate constants for NH/sub 2/ + NO have been determined. A measurement of the fraction of product channels which form OH provides an approximate value of 0.2, but the uncertainties in the method used make this value a lower limit. Preliminary rate measurements for the reaction of OH + NH/sub 3/ ..-->.. NH/sub 2/ + H/sub 2/O agree well with previous room temperature experiments and appear to show a simple Arrhenius dependence with temperatures to 1200/sup 0/K. A chemical model … more
Date: March 1, 1980
Creator: Silver, J. A.; Gozewski, C. M. & Kolb, C. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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