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in subjects: "Nitro Compounds"

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Cloud Rise From High-Explosives Detonations

No Description Available.

Date: January 1, 1969

Creator: Church, H.W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Size selective synergism by crown ethers in the extraction of alkali metals by di(2-ethylhexyl) phosphoric acid

Although the macrocyclic polyethers, known as crown ethers, complex metal ions and do so preferentially according to the size correspondance between the ion and the crown ether cavity, their usefulness as liquid-liquid extraction reagents has been limited by the necessity of solubilizing the anion in the organic phase. The common mineral acid anions are difficult to transfer to the organic phase and organophilic anions are expensive or impractical. A method is described that avoids this problem… more

Date: January 1, 1980

Creator: McDowell, W.J.; Kinard, W.F. & Shoun, R.R.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Comparisons of the structure, stability and electron distribution of nitrobenzenes and nitro-sym-triazines

Nitrobenzenes are a well known class of stable organic compounds. Nitro-sym-triazines are not known, although other substituted triazines are very well known. To investigate what properties the nitrotriazines might have, should they be synthesized, we performed molecular orbital calculations for nitrotriazine (NTZ), dinitrotriazine (DNTZ), and trinitrotriazine (TNTZ). Nitrobenzenes with analogous nitrogroup substitution were also studied to provide a check on the calculations. In particular, ni… more

Date: January 1, 1986

Creator: Ritchie, J.P.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Possible explosive compounds in the Savannah River Site waste tank farm facilities

Based on a comparison of the known constituents in high-level nuclear waste stored at the Savannah River Site (SRS) and explosive compounds reported in the literature, only two classes of explosive compounds (metal NO{sub x} compounds and organic compounds) were identified as requiring further work to determine if they exist in the waste, and if so, in what quantities. Of the fourteen classes of explosive compounds identified as conceivably being present in tank farm operations, nine classes (m… more

Date: March 15, 1992

Creator: Hobbs, D. T.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

General Chemistry Division quarterly report, July--September 1977

Analytical research and development work is reported on multielement analysis, time-resolved spectroscopy, fluorescence analysis, ionization potential of NP, excited state chemistry, polarized x ray sources, potentiometric titration of Na, determination of TATB in DMSO, determination of nitrobenzene in TATB, analysis of explosive composites, mass spectrometer automation, mass spectra calculation, solids formation in geothermal brine, water quality laboratory automation, aerosol coagulation, and… more

Date: November 30, 1977

Creator: Harrar, J.E. (ed.)

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Health and environmental effects of complex chemical mixtures: proceedings

The Office of Health and Environmental Research (OHER) of the Department of Energy supports a broad long-term research program on human health and environmental effects from potential exposure to energy-related complex chemical mixtures. The program seeks basic mechanistic data on the effects of complex mixtures at the cellular, molecular, and whole animal levels to aid in predicting human health effects and seeks ecological data on biological and physical transformations in the mixtures, conce… more

Date: January 1, 1985

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Inverse Raman effect: applications and detection techniques

The processes underlying the inverse Raman effect are qualitatively described by comparing it to the more familiar phenomena of conventional and stimulated Raman scattering. An experession is derived for the inverse Raman absorption coefficient, and its relationship to the stimulated Raman gain is obtained. The power requirements of the two fields are examined qualitatively and quantitatively. The assumption that the inverse Raman absorption coefficient is constant over the interaction length i… more

Date: August 1, 1980

Creator: Hughes, L.J. Jr.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Recovery of anaerobic digestion after exposure to toxicants. Final report

The concept that methane fermentation cannot tolerate chronic or slug doses of toxicants has almost totally precluded methane fermentation as a viable contender for the treatment of industrial wastewaters. This study assayed a wide variety of toxicants, heavy metals, inorganic salts, organic chemicals, solvents, and antibiotics which are used in industrial processes and, therefore, appear in the industrial wastewaters therefrom. Toxicity was related to the reduction in methane production of a c… more

Date: December 1, 1979

Creator: Yang, J.; Parkin, G. F. & Speece, R. E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Molecular-orbital calculations for polynitropolyhedranes

Various synthetic pathways to polyhedranes are being evaluated by using theoretical calculations. The results indicate that the synthesis of tetranitrotetrahedrane from tetralithiotetrahedrane is not a promising route. Alternatively, sequential base-promoted nitrations of cubanes seem a much more promising route for obtaining polynitrocubanes.

Date: January 1, 1982

Creator: Ritchie, J.P.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Coherent anti-Stokes Raman scattering in benzene and nitromethane shock-compressed to 10 GPa

The frequency shifts of the ring-stretching mode of shock-compressed liquid benzene and the CN stretching mode of nitromethane have been measured using coherent anti-Stokes Raman scattering. Shock pressures up to 11 GPa were achieved using a two-stage light gas gun. The frequency shifted Raman signal was generated using single pulse Nd:YAG and broadband-type lasers. 16 refs., 3 figs.

Date: January 1, 1985

Creator: Schmidt, S.C.; Moore, D.S.; Shaner, J.W.; Shampine, D.L. & Holt, W.T.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Investigations of the biological effects of radiation: a multi-discipline approach. Progress report, September 1, 1976--August 31, 1977

The quasi-free electron attachment rate, k/sub e/, and mobility, ..mu../sub e/, were studied in non-polar solutions using pulsed conductivity techniques. Measurements of k/sub e/ of >50 nitro compounds in liquids have ..mu../sub e/ ranging from <0.1 to 100 cm/sup 2//volt sec at temperatures from -100 to +40/sup 0/C indicated electron-dipole interactions are important in liquids having ..mu../sub e/ < 1 cm/sup 2//volt sec. The Smoluchowski equation was modified to include electron-dipole interac… more

Date: September 1, 1977

Creator: Friedell, H.L.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Three dimensional modeling of shock initiation of heterogeneous explosives

The basic processes in the shock initiation of heterogeneous explosives have been investigated theoretically using a model of a cube of nitromethane containing 91 cubic air holes. The interaction of a shock wave with the density discontinuities, the resulting hot spot formation and interaction, and the buildup to propagating detonation were computed using three-dimensional numerical Eulerian hydrodynamics with Arrhenius chemical reaction and accurate equations of state. The basic process in the… more

Date: January 1, 1982

Creator: Mader, C.L. & Kershner, J.D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Versatile electrochemical microsensors for environmental monitoring

The fabrication of novel multielement microelectrode array sensors is reported. With regard to individual array elements, two main concepts are pursued. One involves the use of relatively non-selective microelectrode elements, coupled with pattern recognition methods, for data analysis. This strategy is most applicable when prior knowledge about the chemical environment is limited, or when mainly qualitative information is sought. The second concept involves the development of arrays containing… more

Date: October 1, 1991

Creator: Glass, R.S.; Hong, K.C. (Lawrence Livermore National Lab., CA (United States). Chemistry and Materials Science Dept.); Ashley, K. (San Jose State Univ., CA (United States). Dept. of Chemistry) & Granstaff, V.E. (Sandia National Labs., Albuquerque, NM (United States))

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Determination of inorganic chlorides in TATB

No Description Available.

Date: December 1, 1974

Creator: Kohn, E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Simple home-made sensors for potentiometric titrations. [Nitroform CH(NO/sub 2/)/sub 3/]

A sensor for potentiometric titrations was prepared by coating a spectroscopic graphite rod with a solution of poly(vinyl chloride) and dioctyphthalate in tetrahydrofuran. The reference electrode was an Ag/AgCl single-junction electrode. The sensor was used in precipitation, acid-base, compleximetric, and redox titrations. Preparation of the coated-graphite sensor is simple and rapid. Moreover, it is quite inexpensive. A limitation is its applicability in aqueous media only, because organic sol… more

Date: April 1, 1982

Creator: Selig, W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Probe molecule studies: Active species in alcohol synthesis

The goal of this research is to develop a better understanding of the mechanisms of formation of alcohols and other oxygenates from syngas over supported catalysts. Different probe molecules are planned to add in situ during the reaction to help delineate reaction path ways and identify reaction intermediate species. The key of our study is to investigate how the species generated by these probe molecules interact with surface species present during oxygenate formation. CO hydrogenation reactio… more

Date: July 1, 1991

Creator: Blackmond, D.G. & Wender, I.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Study of New Materials for Gun Propellant Formulations

We are searching for new energetic materials to improve gun- propellant formulations. Theoretical calculations indicate that certain types of high nitrogen compounds produce lower average- molecular-weight gases than those with more carbon, and low average-molecular-weight by-products contribute to higher impetus. Therefore, our target compounds were chosen to contain only the elements C, H, N, and O, with a high percentage of nitrogen, be thermally stable and moderately insensitive to impact. … more

Date: January 1, 1989

Creator: Lee, Kien-Yin & Stinecipher, M.M. (Los Alamos National Lab., NM (USA))

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Coherent and spontaneous Raman spectroscopy in shocked and unshocked liquids

Coherent and non-coherent Raman spectroscopy is being used to study the structure and energy transfer in molecular liquids at high pressures. Stimulated Raman scattering, coherent anti-Stokes Raman scattering, and Raman induced Kerr effect scattering measurements have been performed in liquid benzene and liquid nitromethane shocked to pressures up to 11 GPa. Frequency shifts were observed for the 992 cm/sup -1/ ring stretching mode of benzene and the 920 cm/sup -1/ CN stretching mode of nitrome… more

Date: January 1, 1985

Creator: Schmidt, S.C.; Moore, D.S.; Schiferl, D.; Chatelet, M.; Turner, T.P.; Shaner, J.W. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Ionization in liquids. Progress report, May 1, 1981-April 30, 1982

Significant progress has been made in better understanding the electron transport and reaction properties of model liquids and biological systems. The new results complement earlier studies of electrons and are important to all aspects of the interaction of radiation with matter and to the myriad of electronic processes that occur in a variety of systems. These processes range from dielectric breakdown to carcinogenesis as is illustrated in the following list of electron transport and reaction … more

Date: December 31, 1981

Creator: Bakale, G.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Characterization of explosives processing waste decomposition due to composting

Static pile and mechanically stirred composts generated at the Umatilla Army Depot Activity in a field composting optimization study were chemically and toxicologically characterized to provide data for the evaluation of composting efficiency to decontaminate and detoxify explosives-contaminated soil. Characterization included determination of explosives and 2,4,6,-trinitrotoluene metabolites in composts and their EPA Synthetic Precipitation Leaching Procedure Leachates, leachate toxicity to Ce… more

Date: November 1, 1991

Creator: Griest, W.H.; Tyndall, R.L.; Stewart, A.J.; Ho, C.H.; Ironside, K.S.; Caton, J.E. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Evaluation of ingredients for the development of new insensitive munitions.

Several ingredients being considered by the U.S. Army for the development of new insensitive munitions have been examined. One set of ingredients consists of 2,4-dinitrophenylhydrazine (DNPH) and hexahydro-1,3,5-trinitro-s-triazine (RDX). In this set, the decomposition of the mixture was examined to determine whether adding DNPH to RDX would generate a sufficient quantity of gas to rupture the case of a munition prior to the onset of the rapid reaction of RDX, thus mitigating the violence of re… more

Date: December 1, 2004

Creator: Maharrey, Sean P.; Johnston, Lois A.; Behrens, Richard, Jr. & Wiese-Smith, Deneille

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Exploratory research, Tasks A, B, C, and D. Final report, August 17-December 31, 1977

SRI International has conducted research on the upgrading of computerized thermo-hydro code calculations and the synthesis of energetic materials. This project comprised four tasks, as follows: Task A included: (1) formulating routines for inverting the P = P(T,V) and V = V(T,P) equations of state when isotherms exhibit a van der Waals' loop; (2) incorporating these routines into the TIGER code so V and T can be used as independent variables in computing thermodynamic functions of liquids exhib… more

Date: February 17, 1978

Creator: Simon, Robert L.; Coon, Clifford L.; Cowperthwaite, Michael & Sincich, Eugene

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

TNF (trinitro-9-fluorenone)-doped mylar: A rad-hard film dielectric developed for pulse-discharge capacitors

Development of rad-hard (radiation tolerant) film dielectric suitable for discharge capacitor application has recently been completed. This dielectric is made by doping polyethylene terephthalate film (Mylar C)* with the material, 2,4,7,-trinitro-9-fluorenone (TNF) which acts as an electron acceptor to photoconduction electrons in the film. It has been shown that neither the presence of TNF in the film, nor the process which places the TNF in the film, has any adverse effects on the electrical … more

Date: January 1, 1991

Creator: Bischoff, G.C. (General Electric Co., Largo, FL (USA). Neutron Devices Dept.) & Edwards, L.R. (Sandia National Labs., Albuquerque, NM (USA))

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Mechanistic studies of carbon monoxide reduction

The progress made during the current grant period (1 January 1988--1 April 1990) in three different areas of research is summarized. The research areas are: (1) oxidatively-induced double carbonylation reactions to form {alpha}-ketoacyl complexes and studies of the reactivity of the resulting compounds, (2) mechanistic studies of the carbonylation of nitroaromatics to form isocyanates, carbamates, and ureas, and (3) studies of the formation and reactivity of unusual metallacycles and alkylidene… more

Date: June 12, 1990

Creator: Geoffroy, G.L.

Item Type: Report

Partner: UNT Libraries Government Documents Department