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in subjects: "Nitrogen Compounds"  
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Pentamethylcyclopentadienyl and bis(trimethylsilyl)amido complexes of the di- and trivalent lanthanides

Description: The reaction of the divalent iodides YbI/sub 2/ and EuI/sub 2/ with NaN(SiMe/sub 3/)/sub 2/ has provided pentane-soluble, monomeric derivatives of the divalent lanthanides. These compounds are isolated as the solvated species Eu(N(SiMe/sub 3/)/sub 2/)/sub 2/L/sub 2/ (L = thf or 1,2-dme), Yb(N(SiMe/sub 3/)/sub 2/)/sub 2/(thf)/sub 1/ /sub 5/ and Yb(N(SiMe/sub 3/)/sub 2/)/sub 2/L/sub 2/ (L = 1,2-dme or OEt/sub 2/), or as the sodium salts NaM(N(SiMe/sub 3/)/sub 2/)/sub 3/ (M = Eu or Yb). The pentam… more
Date: March 1, 1982
Creator: Tilley, T. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Molecular ingredients of heterogeneous catalysis

Description: The purpose of this paper is to present a review and status report to those in theoretical chemistry of the rapidly developing surface science of heterogeneous catalysis. The art of catalysis is developing into science. This profound change provides one with opportunities not only to understand the molecular ingredients of important catalytic systems but also to develop new and improved catalyst. The participation of theorists to find answers to important questions is sorely needed for the soun… more
Date: June 1, 1982
Creator: Somorjai, G.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Energy and technology review

Description: Three areas of research are discussed: microcomputer technology applied to inspecting machined parts to determine roundness in ultraprecision measurements; development of an electrolytic technique for preparing dinitrogen pentoxide as a potentially less expensive step in the large-scale synthesis of the explosive HMX; and the application of frequency conversion to short wavelengths in the Novette and Nova lasers to improve the performance of inertial-confinement fusion targets. (GHT)
Date: August 1, 1982
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Mechanisms for radiation damage in DNA. Progress report, January 1, 1982-December 31, 1982

Description: In this project several mechanisms are proposed for radiation damage to DNA constituents and DNA, and a series of experiments utilizing electron spin resonance spectrometry to test the proposed mechanisms have been detailed. In the past studies have concentrated chiefly on the direct effect of radiation on DNA. We are currently investigating irradiated systems of DNA constituents which may shed light on indirect effects. In addition, studies of radiation effects on lipids have been undertaken w… more
Date: May 1, 1982
Creator: Sevilla, M. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Consolidated fuel-reprocessing program. Progress report, April 1-June 30, 1982

Description: Highlights of progress accomplished during the quarter ending June 30, 1982 are summarized. Discussion is presented under the headings: Process development; Laboratory R and D; Engineering research; Engineering systems; Integrated equipment test facility operation; Instrument development; and HTGR fuel reprocessing.
Date: September 1, 1982
Creator: Burch, W D
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Pacific Northwest Laboratory annual report for 1981 to the DOE Office of the Assistant Secretary for Environmental Protection, Safety and Emergency Preparedness. Part 5. Environmental and occupational protection, assessment, and engineering

Description: This report describes research in environment, health, and safety conducted during fiscal year 1981. The five parts of the report are oriented to particular segments of the program. Parts 1 to 4 report on research performed for the DOE Office of Health and Environmental Research in the Office of Energy Research. Part 5 reports progress on all research performed for the Office of the Assistant Secretary for Environmental Protection, Safety and Emergency Preparedness. The parts are: Part 1: Biome… more
Date: February 1, 1982
Creator: Glass, W.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Biomedical applications of digital autoradiography with a MWPC

Description: A Multiwire Proportional Chamber (MWPC) was used as a ..beta../sup -/ radioactivity detector in biological and medical applications. Two different kinds of experiments were performed: the study of variations in the ability of cell clones to incorporate a radioactive precursor of DNA biosynthesis (/sup 3/H-thymidine) and the regional carbohydrate consumption in myocardial tissue by means of a deposit tracer of glucose metabolism (/sup 3/H-deoxyglucose).
Date: May 1, 1982
Creator: Bellazzini, R.; Betti, G.; Del Guerra, A.; Massai, M. M.; Ragadini, M.; Spandre, G. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Radiological status of the ground water beneath the Hanford Site, January-December 1981

Description: During 1981, 299 monitoring wells were sampled at various times for radionuclide chemical contaminants. This report is one of a series prepared annually to document and evaluate the status of ground water at the Hanford Site. Two substances, tritium and nonradioactive nitrate, are easily transported in ground water; therefore, these substances are used as primary tracers to monitor the movement of contaminated ground water. Data collected during 1981 describe the movement of tritium and the non… more
Date: April 1, 1982
Creator: Eddy, P.A.; Cline, C.S. & Prater, L.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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On-line composition with laser-based techniques

Description: Current methods for determining the composition of coal gasification streams generally involve sampling, some treatment, and inherent delay times prior to analysis. Optical instrumentation, on the other hand, provides the potential for on-line, rapid-response monitoring of gasifier streams. Among the optical technques that appear quite promising for this application are coherent anti-Stokes Raman scattering (CARS), laser-induced breakdown spectroscopy (LIBS), Fourier transform infrared spectros… more
Date: January 1, 1982
Creator: Finch, F.T. & Hartford, A. Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Incinerator development program for processing transuranic waste at the Idaho National Engineering Laboratory

Description: In the fall of 1981, two short-term tests were conducted on a controlled air and a rotary kiln incinerator to assess their potential for processing transuranic (TRU) contaminated waste at the Idaho National Engineering Laboratory (INEL). The primary purpose of the test program was a proof-of-principle verification that the incinerators could achieve near-complete combustion of the combustible portion of the waste, while mixed with high percentages of noncombustible and metal waste materials. Ot… more
Date: January 1, 1982
Creator: Hedahl, T.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Physical and chemical characterization of synthetic calcined sludge

Description: Calcined synthetic sludge was chemically characterized in support of engineering studies to design a processing plant to solidify highly radioactive waste at the Savannah River Plant. An analytical technique is described which provides quantitative data by mass spectrometric analysis of gases evolved during thermogravimetric analysis without measurements of gas flow rates or mass spectrometer sensitivities. Scanning electron microprobe analysis, Mossbauer spectroscopy, and several other common … more
Date: March 1, 1982
Creator: Slates, R.V.; Mosley, W.C. Jr.; Tiffany, B. & Stone, J.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Molecular-orbital calculations for polynitropolyhedranes

Description: 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: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Kinetics of the thermal decomposition of solid PETN

Description: The thermal decomposition of PETN below its melting point has been investigated. Separate monitoring of six product gases allowed individual initial rates of reaction and activation energies to be calculated. The activation energies for the production of both N/sub 2/O and H/sub 2/O are between 50 and 56 kcal.mol/sup -1/, pointing to a single process operant over the entire temperature range 363 to 408 K. The other four observed products have activation energies that are significantly higher. T… more
Date: January 1, 1982
Creator: Miller, G. D.; Haws, L. D. & Dinegar, R. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Reduced-size plutonium sample processing and packaging for the PAT-2 package

Description: A light-water container for the air transport of plutonium safeguards samples, the PAT-2 package, has been developed in the USA and is now licensed by the US NRC (Certificate of Compliance) and the US DOT (IAEA Certificate of Competent Authority). The very limited available space in this package for plutonium-bearing samples required the design of small-size canisters to meet the needs of international safeguards. The suitability of a new small canister and vial for powder and solution samples … more
Date: January 1, 1982
Creator: Kuhn, E.; Deron, S.; Aigner, H. & Andersen, J. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Separation of Am-Cm from Al(NO/sub 3/)/sub 3/ waste solutions by in-canyon-tank precipitation as oxalates

Description: A process for recovery of Am-Cm residues from high-activity waste concentrates has been developed specifically for application in Savannah River Plant (SRP) canyon tanks. The Am-Cm residues were collected from a campaign to produce plutonium containing high isotopic concentrations of /sup 242/Pu. The separation of Am-Cm from the high-activity waste stream, containing about 2M Al(NO/sub 3/)/sub 3/, is necessary to produce an acceptable feed solution for a later pressurized cation exchange chroma… more
Date: April 1, 1982
Creator: Gray, L. W.; Burney, G. A.; Wilson, T. W.; McKibben, J. M.; Bibler, N. E.; Holtzscheiter, E. W. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Laser studies of radiationless decay mechanisms in Os/sup 2 +///sup 3 +/ polypyridine complexes

Description: The lowest energy excited states in Os(II) polypyridine complexes are of a metal-to-ligand charge transfer (MLCT) type and live for 10 to 40 ..mu..s at 4.2/sup 0/K. The long wavelength absorptions in the visible region of the spectrum in Os(III) polypyridine complexes arise from ligand-to-metal charge transfer (LMCT) transitions and do not produce detectable luminescence. This suggests that these LMCT states are very short lived. Results of picosecond absorption studies on the lifetimes the LMC… more
Date: January 1, 1982
Creator: Netzel, T. L. & Bergkamp, M. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Photon-activation therapy

Description: Photon Activation Therapy (PAT) is a technique in which radiation dose to tumor is enhanced via introduction of stable /sup 127/I in the form of iodinated deoxyuridine (IdUrd). Stimulation of cytotoxic effects from IdUrd is accomplished by activation with external (or implanted) radiation sources. Thus, accumulations of this nucleoside in actively competing cellpools do not preclude therapy in so far as such tissues can be excluded from the radiation field. Calculations show that 5% replacement… more
Date: January 1, 1982
Creator: Fairchild, R.G. & Bond, V.P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Three dimensional modeling of shock initiation of heterogeneous explosives

Description: 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: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Effects of particle characteristics on performance of RR5K PETN

Description: A particle characterization of production lots of RR5K PETN has been completed. Prediction models were derived which identify those particle characteristics which influence sensitivity and performance. Those factors which have a positive influence on threshold burst current were also found to have a positive influence on transit time. The models may be useful in screening new lots of PETN prior to test firing. In general, large distributions of shapes and sizes, with the larger particles being … more
Date: June 1, 1982
Creator: Rogers, J. W., Jr. & Duncan, A. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of photoelectrochemical cells based on compound semiconductors and nonaqueous electrolytes. Semiannual report, May 1, 1981-October 31, 1981

Description: A reproducible procedure for chemical bath deposition (CBD) of CdSe has been documented in detail, allowing a consistent production of photoelectrode yielding 5.5 to 6.5% conversion efficiency in alkaline polysulfide electrolyte (employing a tungsten halogen lamp/KG-2 filter solar simulated light source). The CBD films of n-CdSe on Ti have achieved an efficiency of approx. 10% under both solar simulated and real sunlight conditions using an Fe(CN)/sub 6//sup -3///sup -4/ electrolyte at pH 13. F… more
Date: March 1, 1982
Creator: Rauh, R. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Radiation enhancement with /sup 127/I-deoxyuridine

Description: A technique for radiation enhancement of photon radiotherapy is outlined. High LET radiations in the form of Auger electron distributions are generated by photoactivation of stable iodine incorporated as iodinated deoxyuridine (IdUrd). Of the several halogenated deoxyribonucleosides evaluated, IdUrd was found to be the only thymidine analog providing effective photoactivation. This mechanism is combined with radiation sensitization to produce an overall radiation enhancement. Calculations show … more
Date: June 1, 1982
Creator: Fairchild, R.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development of a pressurized fluidized-bed biomass gasifier to produce substitute fuels

Description: The Institute of Gas Technology (IGT) is conducting a program to convert forest and crop residues to substitute fuel in a pressurized fluidized-bed biomass gasifier. The process is designed for operation at pressures up to 2.17 MPa (315 psia) and temperatures up to 1255 K (1800/sup 0/F). Various goals for synthesis or fuel gas processes are being pursued to develop an efficient process. Some of these goals are to maximize the throughput, the amount, and the quality of the gas, while minimizing … more
Date: January 1, 1982
Creator: Babu, S P; Onischak, M & Kosowski, G
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Acid rain: commentary on controversial issues and observations on the role of fuel burning

Description: Even though much information has been accumulated on the subject of acid precipitation, lack of knowledge in certain technical areas precludes an adequate understanding of (1) how serious the acid precipitation problem really is and (2) what effect controlling sources of acid precipitation precursors would have in reducing acidification. It is nevertheless possible to draw some broad conclusions regarding the problem and to ascertain the direction that the required further work should take. Thi… more
Date: March 1, 1982
Creator: Szabo, M. F.; Esposito, M. P. & Spaite, P. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Diffuse reflectance infrared Fourier-Transform spectra of selected organic compounds

Description: Diffuse reflectance infrared spectra of a variety of different organic compounds have been determined. Profiles of the spectra along with the location and relative intensity of the principal bands have been included for each compound studied. In addition both diffuse reflectance and transmittance infrared spectra were obtained for the same samples, and the spectral results were compared. Although some minor variations are observed between a diffuse reflectance spectrum and the corresponding tra… more
Date: May 1, 1982
Creator: Harmon, S.H. & Caton, J.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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