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Raman microprobe investigation of molecular structure and organization in the native state of woody tissue

Description: Although the primary emphasis of our program has remained with the application of Raman spectroscopy to the study of native tissue, the scope of the work has been expanded to include a number of complementary approaches. These have included Solid State 13C NMR, autoradiography of radiolabeled woody tissue sections, and the generation of biomimetic tertiary aggregates which simulate states of aggregation characteristic of cell walls. Our Raman spectroscopic studies have resulted in progress in t… more
Date: August 1, 1989
Creator: Atalla, R.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Energy related studies utilizing microcline thermochronology

Description: Using Microcline Thermochronology (MTC), we have investigated the hydrothermal maturity of the Salton Sea Geothermal Field, potential or hydrocarbon maturation associated with heating due to ridge subduction beneath accretionary prism sediments, developed a single crystal dating system which has proven to greatly enhance interpretations regarding MTC, and also have begun to develop sound theoretical and experimental techniques which truly revolutionize our understanding of argon systematics in … more
Date: November 14, 1989
Creator: Harrison, T.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Distribution of sup 137 Cs, sup 90 Sr, sup 238 Pu, sup 239 Pu, sup 241 Am and sup 244 Cm in Pond B, Savannah River Site

Description: The gradual senescence of present-day operating nuclear facilities, and resultant contamination of aquatic and terrestrial ecosystems, emphasize the importance of understanding the behavior of radionuclides in the environment. Observations and deductions concerning mechanisms of radionuclide transport can contribute significantly to knowledge of fundamental ecological processes. This study emphasized the ecosystem-level distribution of several long-lived radionuclides in an abandoned reactor co… more
Date: May 1, 1989
Creator: Whicker, F. W.; Pinder, J. E., III; Bowling, J. W.; Alberts, J. J. & Brisbin, I. L., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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(Radiopharmacokinetics: Utilization of nuclear medicine)

Description: The work performed in the 1986/1989 period can be characterized as one of testing and documenting that the Radiopharmacokinetic technique is both feasible and applicable to human studies, as well as developing spectroscopic methods for undertaking noninvasive human studies. Main accomplishments include studies which: show that drug targeting can be monitored noninvasively using radiolabeled drugs. The study that documented this finding involved an analysis of the comparative kinetics of biodist… more
Date: January 1, 1989
Creator: Wolf, W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Pairing interaction effects in exciton level densities

Description: Recent progress in pairing corrections for exciton state-density formulas used in pre-compound nuclear reaction theories is reviewed. These correction factors are, strictly speaking, dependent on the nuclear excitation energy U and the exciton number n. A simple formula for (U,n)-dependent pairing corrections has been derived, based on the BCS pairing equations for constant single-particle spacing, for the exciton state-density formula for one kind of Fermion. It has been shown that the constan… more
Date: January 1, 1989
Creator: Fu, C.Y.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Fission energy: The integral fast reactor

Description: The Integral Fast Reactor (IFR) is an innovative reactor concept being developed at Argonne National Laboratory as a such next- generation reactor concept. The IFR concept has a number of specific technical advantages that collectively address the potential difficulties facing the expansion of nuclear power deployment. In particular, the IFR concept can meet all three fundamental requirements needed in a next-generation reactor as discussed below. This document discusses these requirements.
Date: January 1, 1989
Creator: Chang, Yoon I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Migration of carbon in tempered martensitic steel during excimer laser melting

Description: The migration of ion implanted {sup 13}C in tempered martensitic steel (nominal composition 1.05 wt. % C, 0.2 wt. % Si, and 0.3 wt. % Mn) during excimer laser melting was examined utilizing the resonance of the {sup 13}C(p,{gamma}){sup 14}N reaction at Ep = 1747.6 keV. Depth concentration profiles after five and ten laser pulses of 1 J/cm{sup 2} revealed deviation from random walk diffusion in a homogeneous media. This was modelled by using the solubility controlled flow of carbon in iron-carbo… more
Date: January 1, 1989
Creator: Hirvonen, J.P.; Jervis, T.R. & Zocco, T.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Observation of superdeformation in sup 191 Hg

Description: The first observation of superdeformation in the A {approx equal} 190 mass region is reported. A rotational band of 12 transitions with an average energy spacing of 37 keV, an average moment of inertia of 110 {Dirac h}{sup 2} MeV{sup {minus}1}, and an average quadrupole moment of 18 {plus minus} 3 eb has been observed in {sup 191}Hg. These results are in excellent agreement with a calculation that predicts an ellipsoidal axis ratio of 1.65:1 for the superdeformed shape in this nucleus. Evidence… more
Date: January 1, 1989
Creator: Moore, E.F.; Janssens, R.V.F.; Chasman, R.R.; Ahmad, I.; Khoo, T.L.; Wolfs, F.L.H. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Calculation of the production cross sections of high-spin isomeric states in hafnium

Description: The J{sup {pi}} = 16{sup +} isomeric state in {sup 178}Hf(E{sub x} = 2.447 MeV), which has a halflife of 31 years, poses a threat for serious radioactive activation problems in some fusion reactor designs if its production in 14-MeV neutron reactions is significant. The relatively high excitation energy (2.447 MeV) of this state results in it lying in the continuum region, so it is necessary in a calculation to reconstruct the salient nuclear structure around the state, particularly rotational … more
Date: January 1, 1989
Creator: Chadwick, M.B.; Young, P.G. (Oxford Univ. (UK). Nuclear Physics Lab. & Los Alamos National Lab., NM (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Leach tests on grouts made with actual and trace metal-spiked synthetic phosphate/sulfate waste

Description: Pacific Northwest Laboratory conducted experiments to produce empirical leach rate data for phosphate-sulfate waste (PSW) grout. Effective diffusivities were measured for various radionuclides ({sup 90}Sr, {sup 99}Tc, {sup 14}C, {sup 129}I, {sup 137}Cs, {sup 60}Co, {sup 54}Mn, and U), stable major components (NO{sub 3}{sup {minus}}, SO{sub 4}{sup 2{minus}}, H{sub 3}BO{sub 3}, K and Na) and the trace constituents Ag, As, Cd, Hg, Pb, and Se. Two types of leach tests were used on samples of actual… more
Date: October 1, 1989
Creator: Serne, R. J.; Martin, W. J.; LeGore, V. L.; Lindenmeier, C. W.; McLaurine, S. B.; Martin, P. F. C. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The effects of temperature on the leaching behavior of cement waste forms: The cement/sodium sulfate system

Description: The leaching mechanisms of simulated low-level radioactive waste forms are being determined as support for development of an accelerated leach test. Two approaches are being used: (1) comparisons of leaching data with results of a model that describes diffusion from a finite cylinder, and (2) observation of the leaching process at temperatures between 20{degree}C and 65{degree}C. To provide results that can be used for modeling, leaching at elevated temperatures must change neither the leaching… more
Date: October 1, 1989
Creator: Fuhrmann, M.; Pietrzak, R.; Heiser, J.; Franz, E.M. & Colombo, P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Physiological imaging with PET and SPECT in Dementia

Description: Dementia is a medical problem of increasingly obvious importance. The most common cause of dementia, Alzheimer's disease (AD) accounts for at least 50% of all cases of dementia, with multi-infarct dementia the next most common cause of the syndrome. While the accuracy of diagnosis of AD may range from 80 to 90%, there is currently no laboratory test to confirm the diagnosis. Functional imaging techniques such as positron emission tomography (PET) and single photon emission computed tomography (… more
Date: October 1, 1989
Creator: Jagust, W.J. (California Univ., San Francisco, CA (United States). Dept. of Neurology Lawrence Berkeley Lab., CA (United States))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The study of exotic N approx equal 82 nuclei using the Daresbury recoil mass separator

Description: Experiments using the Daresbury Recoil Mass Separator have identified microsecond isomers in the exotic N {equals} 82, 83 nuclei {sup 153}Yb, {sup 153}Lu, {sup 154}Hf, and have established their decay schemes. The results for {sup 153}Lu and {sup 154}Hf, together with those for lighter N {equals} 82 isotones, provide an outstanding illustration of the dependence of E2 transition rates between J{sup n} states on the subshell occupation, and demonstrate that half-filling of the {pi}h{sub 11/2} su… more
Date: January 1, 1989
Creator: McNeill, J.H.; Chishti, A.A.; Gelletly, W.; Hotchkis, M. A. C.; Varley, B. J.; Blomqvist, J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Results of the Radiological Survey at 133 Maywood Avenue, Maywood, New Jersey (MJ025)

Description: Maywood Chemical Works (MCW) of Maywood, New Jersey, generated process wastes and residues associated with the production and refining of thorium and thorium compounds from monazite ores from 1916 to 1956. MCW supplied rare earth metals and thorium compounds to the Atomic Energy Commission and various other government agencies from the late 1940s to the mid-1950s. Area residents used the sandlike waste from this thorium extraction process mixed with tea and cocoa leaves as mulch in their yards.… more
Date: October 1, 1989
Creator: Foley, R. D.; Carrier, R. F.; Floyd, L. M. & Crutcher, J.W. (Oak Ridge National Lab., TN (USA))
Item Type: Refine your search to only Report
Location: 40.892852 -74.067028
Partner: UNT Libraries Government Documents Department
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Progress of the RERTR (Reduced Enrichment Research and Test Reactor) Program in 1989

Description: The progress of the Reduced Enrichment Research and Test Reactor (RERTR) Program is described. After a brief summary of the results which the RERTR Program, in collaboration with its many international partners, had achieved by the end of 1988, the major events, findings, and activities of 1989 are reviewed. The scope of the RERTR Program activities was curtailed, in 1989, by an unexpected legislative restriction which limited the ability of the Arms Control and Disarmament Agency to adequately… more
Date: January 1, 1989
Creator: Travelli, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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ENDF/B-VI six-group delayed neutron data

Description: This paper evaluates ENDF/B-VI delayed neutron data for {sup 235}U, {sup 238}U, and {sup 239}Pu. (LSP)
Date: January 1, 1989
Creator: England, T. R.; Brady, M. C. (Los Alamos National Lab., NM (USA) & Oak Ridge National Lab., TN (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Diosmacycloalkanes as models for the formation of hydrocarbons from surface methylenes

Description: We have obtained a neutron diffraction data set for Os{sub 2}(CO){sub 8}({mu}-C{sub 2}H{sub 4}). While the structure is still being solved, it is already clear that the hybridization at both of the ethylene carbons is sp{sup 3}. Our first interpretation of our liquid crystal NMR results had suggested a very acute H-C-H angle. We have also obtained {sup 13}C liquid crystal data for Os{sub 2}(CO){sub 8}({mu}-C{sub 2}H{sub 4}). Liquid crystal NMR ({sup 13}C as well as {sup 1}H) spectra have been o… more
Date: January 1, 1989
Creator: Norton, J.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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(Energy related studies utilizing microline thermochronology)

Description: The past two years of research conducted have been fruitful and exciting. Using Microcline Thermochronology (MTC), we have investigated the hydrothermal maturity of the Salton Sea Geothermal Field, potential for hydrocarbon maturation associated with heating due to ridge subduction beneath accretionary prism sediments, developed a single crystal dating system which has proven to greatly enhance interpretations regarding MTC, and also have begun to develop sound theoretical and experimental tech… more
Date: January 1, 1989
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Trends in radionuclide concentrations for selected wildlife and food products near the Hanford Site from 1971 through 1988

Description: From 1971 through 1988 at least 40 species of wildlife and 27 different types of food products were collected and analyzed for radionuclides as part of the Pacific Northwest Laboratory (PNL) Environmental Monitoring Program. This report summarizes the results of these analyses for sample types collected for all or most of the 18-year period. The objectives of this summary investigation were to identify long-term trends or significant year-to-year changes in radionuclide concentrations and, if p… more
Date: September 1, 1989
Creator: Eberhardt, L. E.; Cadwell, L. L.; Price, K. R.; Carlile, D. W. (Pacific Northwest Lab., Richland, WA (USA) & Alaska Dept. of Fish and Game, Juneau, AK (USA))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Monitoring a liquid waste stream with a delayed-neutron instrument

Description: A flowing raffinate stream is to be continuously assayed by a delayed-neutron instrument to detect concentrations of {sup 235}U that could cause a criticality problem in a holding tank. The instrument is to assay a concentration of 0.034 (g {sup 235}U)/L in 100 s with a precision of 10% (1 {sigma}) and to operate unattended for a few months at a time, so it can detect and adjust for changes in the neutron background, the flow rate, and for electronic drifts and malfunctions. In laboratory tests… more
Date: January 1, 1989
Creator: Rinard, P. M.; Van Lyssel, T.; Kroncke, K. E.; Schneider, C. M. & Bourret, S. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Global warming---The role for nuclear power

Description: Nuclear power is currently making an important contribution to our energy requirements. It provides 17% of the world's electricity today --- almost 20% in the US. Reducing the emissions of carbon dioxide over the next 30 to 50 years sufficiently to address the issue of global warming can only be accomplished by a combination of much improved energy efficiency, substantial growth in use of nuclear power, and substantial growth in use of renewable energy. This paper discusses new initiatives in t… more
Date: 1989
Creator: Jones, John E., Jr. & Fulkerson, William
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Nuclear structure in the neutron-rich doubly magic sup 78 Ni region

Description: The magic numbers Z=28 and N=50 imply that very neutron-rich {sup 78}Ni, which has not yet been observed, is doubly magic. The {sup 78}Ni region was investigated by studying the N=50 isotones and neutron-rich Zn isotopes. Results on the level structure of {sup 83}As, {sup 74}Zn, and {sup 76}Zn populated in the decays of {sup 83}Ge, {sup 74}Cu, and {sup 76}Cu are presented. The parent nuclides were produced and mass separated using the TRISTAN facility on-line to the High-Flux Beam Reactor at Br… more
Date: January 1, 1989
Creator: Hill, J. C.; Wohn, F. K.; Winger, J. A.; Warburton, E. K.; Gill, R. L. & Schuhmann, R. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Effects of the hyperfine interactions on the decay of the collective nuclear excited states in alpha -hematite

Description: In this paper the time dependence of the coherent decay of nuclear excited state in an {alpha}-{sup 57}Fe{sub 2}O{sub 3} single crystal is presented. The experiment was carried out in diffraction geometry. A highly monocromatized and collimated beam of synchrotron radiation was used for the excitation of nuclear levels. Quantum beat spectra taken below and above the (7,7,7) pure nuclear reflection of hematite show a characteristic pattern corresponding to the magnetic and quadrupole hyperfine i… more
Date: January 1, 1989
Creator: Faigel, G.; Berman, L. E.; Grover, J. R.; Hastings, J. B.; Haustein, P. E. & Siddons, D. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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