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  • 2005-2009  (1)
  • 1970-1974  (5)
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  • 1
    Electronic Resource
    Electronic Resource
    Ketenes. XVI. Reactions of dimethylketene with .alpha.-dicarbonyl and related compounds (1971)
    s.l. : American Chemical Society
    The @journal of organic chemistry 36 (1971), S. 2222-2225 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00815a004
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Ketenes. XIV. Adducts of dimethylketene with C:N compounds (1971)
    s.l. : American Chemical Society
    The @journal of organic chemistry 36 (1971), S. 2211-2215 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00815a002
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Ventral pallidal neurons code incentive motivation: amplification by mesolimbic sensitization and amphetamine (2005)
    Oxford, UK : Blackwell Science Ltd
    European journal of neuroscience 22 (2005), S. 0 
    Details
    ISSN: 1460-9568
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Neurons in ventral pallidum fire to reward and its predictive cues. We tested mesolimbic activation effects on neural reward coding. Rats learned that a Pavlovian conditioned stimulus (CS+1 tone) predicted a second conditioned stimulus (CS+2 feeder click) followed by an unconditioned stimulus (UCS sucrose reward). Some rats were sensitized to amphetamine after training. Electrophysiological activity of ventral pallidal neurons to stimuli was later recorded under the influence of vehicle or acute amphetamine injection. Both sensitization and acute amphetamine increased ventral pallidum firing at CS+2 (population code and rate code). There were no changes at CS+1 and minimal changes to UCS. With a new ‘Profile Analysis’, we show that mesolimbic activation by sensitization/amphetamine incrementally shifted neuronal firing profiles away from prediction signal coding (maximal at CS+1) and toward incentive coding (maximal at CS+2), without changing hedonic impact coding (maximal at UCS). This pattern suggests mesolimbic activation specifically amplifies a motivational transform of CS+ predictive information into incentive salience coded by ventral pallidal neurons. Our results support incentive-sensitization predictions and suggest why cues temporally proximal to drug presentation may precipitate cue-triggered relapse in human addicts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1460-9568.2005.04411.x
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  • 4
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    Unknown
    MOSELEY, "The Consolidation of the South China Frontier" (Book Review) (1972)
    Ann Arbor, Mich., etc., : Periodicals Archive Online (PAO)
    Journal of Asian Studies. 32 (1972:Nov.-1973:Aug.) 701 
    Details
    ISSN: 0021-9118
    Topics: Political Science , Economics
    Description / Table of Contents: China
    Notes: BOOK REVIEWS
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:1113-1972-032-00-000081
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  • 5
    Electronic Resource
    Electronic Resource
    Rare-earth element distributions in volcanic rocks from Archean greenstone belts (1974)
    Springer
    Contributions to mineralogy and petrology 45 (1974), S. 237-246 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Rare-earth element distributions in Archean volcanic rocks from the South Pass (Wyoming), Yellowknife (NW Canada) and Abitibi (Quebec) greenstone belts and from the Upper Fig Tree Group of the Barberton (S. Africa) greenstone belt reveal two distinct types of Archean volcanism. One type, herein referred to as the arc-type, is characterized by flat (or slightly enriched) REE distributions in tho leiites and enrichment in total and light REE and a variable negative Eu anomaly in more siliceous volcanic members. The second type, herein referred to as the Abitibi-type, is characterized by rather flat REE patterns and negative Eu anomalies in all volcanic rock types. REE distributions in the arc-type volcanic successions can be produced by either progressive shallow fractional crystallization of tholeiitic magma or by decreasing amounts of equilibrium melting of a plagioclase-bearing mantle source. REE distributions in the Abitibi volcanic rocks are most readily explained in terms of progressively decreasing amounts of fractional melting of a source area in which REE are contained chiefly in minor minerals (with low melting temperatures) that are depleted in Eu. The melting models seem to necessitate the existence of one or more pre-greenstone magmatic episodes as well as a continuously replenished mantle source. Replenishment of source material could be accomplished in either of the melting models in subduction zones but the analogy to Phanerozoic plate tectonics should be used with caution. Melting models also imply either (or both) a decreasing geothermal gradient with time or systematic changes in mantle source-area composition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00383441
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  • 6
    Electronic Resource
    Electronic Resource
    Rare earth element distributions in a proto-stratiform ultramafic intrusion (1971)
    Springer
    Contributions to mineralogy and petrology 33 (1971), S. 245-258 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Rare earth element (REE) abundances are reported for ten whole rock and eight mineral samples from the Preacher Creek ultramafic intrusion of southeastern Wyoming. Chondrite-normalized distribution patterns for the whole rocks exhibit a broad maximum between Sm and Gd and reflect the REE pattern of clinopyroxene, the major REE-bearing phase. Alteration of the primary mineral assemblages to actinolite and chlorite, which is generally minor, does not appear to have significantly affected the REE distributions. Absolute abundances of the REE in the rocks and constituent minerals increase as a function of differentiation, and relative abundances suggest an accompanying light REE enrichment. Trapped-liquid phases, which may be relatively enriched in REE, possibly account for some or all of the observed REE trends. The REE data, interpreted in terms of crystal-melt fractionation, suggest derivation of the intrusion by crystallization from a gabbroic magma having a REE distribution pattern similar to the parent magma of the Skaergaard stratiform complex. The results of this study are in accord with and complement a previous proposal that the Preacher Creek body formed in a manner analogous to major stratiform intrusions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00374068
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    Paper (German National Licenses)
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