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  • 1
    Electronic Resource
    Electronic Resource
    Easily hydrolyzable, water-soluble derivatives of (.+-.)-.alpha.-5-[1-(indol-3-yl)ethyl]-2-methylamino-.DELTA.2-thiazolin-4-one, a novel antiviral compound (1979)
    s.l. : American Chemical Society
    Journal of medicinal chemistry 22 (1979), S. 191-195 
    Details
    ISSN: 1520-4804
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jm00188a013
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  • 2
    Electronic Resource
    Electronic Resource
    Methanogenic bacteria: a new primary kingdom? (1978)
    [s.l.] : Nature Publishing Group
    Nature 271 (1978), S. 707-707 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] BIOLOGISTS until recently have divided living organisms into two main groups- plants (including bacteria) and animals. The development of the electron microscope made it clear that a more fundamental dichotomy existed in terms of cell structure and the prokaryotic and euk-aryotic types of organism ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/271707a0
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  • 3
    Electronic Resource
    Electronic Resource
    Comparison of amino acid sequence of troponin I from different striated muscles (1978)
    [s.l.] : Nature Publishing Group
    Nature 271 (1978), S. 31-35 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The sequence of troponin I from fast and slow skeletal and cardiac muscle shows strong homology in the region which binds to actin and is responsible for inhibition of the actomyosin ATPase. More differences are found in the N-terminal region which binds to troponin ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/271031a0
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  • 4
    Electronic Resource
    Electronic Resource
    Enzyme electrophoresis (1976)
    [s.l.] : Nature Publishing Group
    Nature 263 (1976), S. 534-534 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] RECOGNITION that enzymes may occur in multiple, electrophoretically distinct, forms first found important practical applications in clinical laboratories where attention has been concentrated on the relatively few isoenzymes known to be of diagnostic significance. The discovery of isoenzymes, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/263534a0
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  • 5
    Electronic Resource
    Electronic Resource
    The Alston S. Householder Award (1978)
    Springer
    Numerische Mathematik 29 (1978), S. 463-463 
    Details
    ISSN: 0945-3245
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01432882
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  • 6
    Electronic Resource
    Electronic Resource
    The Salt Lick Creek layered intrusion, East Kimberley region, Western Australia (1975)
    Springer
    Contributions to mineralogy and petrology 50 (1975), S. 1-23 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The Lower Proterozoic Salt Lick Creek intrusion, East Kimberley region, Western Australia, is a layered intrusion divisible into two well-defined zones, the Basal and Main Zones, whose combined stratigraphic thickness, as now exposed, is approximately 1000 metres. The Basal Zone, 360 metres thick, contains three members, two of which (Members 1 and 3) are dominated by olivine, plagioclase cumulates (including harrisites and allivalites); Member 2, near the middle of the Basal Zone, consists substantially of more olivine-rich cumulates, including plagioclase-bearing dunites. The Main Zone, commencing with Member 4 plagioclase, orthopyroxene cumulates, is composed largely of anorthositic cumulates of Member 5. Mild but nevertheless measurable rhythmic layering is superimposed upon the three members comprising the Basal Zone. Electron probe microanalyses of the primary phases across some 500 metres of cumulates indicate limited cryptic variation with stratigraphic height. Olivine ranges in composition from Fo81 to Fo84, orthopyroxene from Ca2Mg83Fe15 to Ca2Mg78Fe20, clinopyroxene from Ca48Mg46Fe6 to Ca44Mg48Fe8, and plagioclase from An84 to An88 but mineral compositions are not a simple function of stratigraphic height. It is inferred that the parental magma(s) was high-alumina mafic, intrinsically subalkaline, strongly olivine- and plagioclase-normative and in all likelihood tholeiitic in its affinities. The olivine-free cumulates of the Main Zone display a higher level of normative saturation than the cumulates of the Basal Zone but mineral and host rock chemistries, particularly 100 Mg/ (Mg+Fe2+) atomic ratios, are not favourable to proposals which would relate the origin of the Main Zone or the several members of the intrusion to the differentiation of a single pool of magma. It is suggested that the Main Zone, at least, derived from a separate pulse of relatively more saturated magma and that the lateral replenishment by more or less undifferentiated magma was also a fundamental and critical factor in the genesis of the Basal Zone cumulates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00385218
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  • 7
    Electronic Resource
    Electronic Resource
    Ultramafic inclusions and high pressure megacrysts from a nephelinite sill, Nandewar Mountains, north-eastern New South Wales, and their bearing on the origin of certain ultramafic inclusions in alkaline volcanic rocks (1975)
    Springer
    Contributions to mineralogy and petrology 51 (1975), S. 235-262 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Ultramafic inclusions and megacrysts are unusually abundant in a nephelinite sill in the Nandewar Mountains in north-eastern New South Wales. The inclusions are divisible into a Cr-diopside group and a Ti-augite group, the former being dominated by Cr-spinel Iherzolites of restricted modal composition, the latter by olivine and titaniferous Al-rich clinopyroxene assemblages which vary widely in their modal proportions. The principal megacryst species are olivine and black, titaniferous Al-rich clinopyroxene; additional but comparatively rare megacrysts include titanphlogopite, kaersutitic amphibole, and deep green, relatively Fe-rich clinopyroxene. The Cr-spinel Iherzolites conform closely in mineralogy and chemistry with the spinel lherzolites which dominate upper mantle xenolith assemblages in alkaline mafic volcanic rocks from other provinces. Megacrysts and Ti-augite inclusion mineral assemblages are consistently more Fe-rich than analogous phases in the Cr-diopside xenoliths and also display more extensive cryptic variation. The available experimental data on the high pressure liquidus or near-liquidus phases in olivine nephelinite and related compositions indicate that the olivine and black clinopyroxene megacrysts were precipitated at pressures in the vicinity of 15–20 kb. The similarity in the nature and compositions of the principal megacryst species to analogous phases in the Tiaugite group of inclusions indicates that the latter also represent cognate cumulates derived from the olivine nephelinite at broadly comparable pressures. High pressure fractionation of the host olivine nephelinite liquid, controlled mainly by the separation of olivine and aluminous clinopyroxene, produced only comparatively minor compositional changes in the derivative liquid. The hiatus in olivine compositions at approximately Fo86–88, apparently characteristic of the olivines in coexisting Cr-diopside and Ti-augite inclusions, is assessed in terms of the compositions of olivine in equilibrium with alkali basaltic liquids at high pressures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00372144
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  • 8
    Electronic Resource
    Electronic Resource
    An Al-spinel ultramafic-mafic inclusion suite and high pressure megacrysts in an analcimite and their bearing on basaltic magma fractionation at elevated pressures (1975)
    Springer
    Contributions to mineralogy and petrology 53 (1975), S. 71-104 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract An analcimite sill, which intrudes Carboniferous sedimentary rocks northwest of the township of Barraba in northeastern New South Wales, is exceedingly rich in ultramafic and mafic inclusions and also contains a varied megacryst assemblage. The majority of inclusions belong to an ultramafic-mafic granulite suite whose members generally contain a Cr-poor green spinel. Layering is preserved in many inclusions and their textures are appropriate to those arising from recrystallization at subsolidus temperatures. Ultramafic granulites of the Al-spinel suite are mainly pyroxenites, with rarer lherzolites, and mafic granulites usually consist of the assemblage plagioclasea-luminous pyroxenes-spinel. Ca-rich tschermakitic clinopyroxenes and coexisting aluminous Ca-poor orthopyroxenes define a trend of moderate iron enrichment. Spinels also display significant Fe2+ → Mg substitution. Plagioclase in some plagioclase-bearing pyroxenites and mafic granulites contains numerous rod-like inclusions of spinel, compositionally similar to the discrete spinels unassociated with plagioclase. The formation of spinel in plagioclase is believed to have resulted largely from the migration of (Mg, Fe2+) to Al-rich nucleation sites in the feldspar. Other inclusion types include Cr-spinel lherzolites —more Fe-rich than Cr-diopside lherzolite inclusions in alkaline volcanics — and rare wehrlite heteradcumulates, probably cognate with the host analcimite. The megacryst assemblage is dominated by anorthoclase megacrysts, which are accompanied, in order of decreasing abundance, by megacrysts of tschermakitic clinopyroxene, titanbiotite, kaersutite, and aluminous titanomagnetite. The Al-spinel mafic granulites have low Ti, K and P contents and their petrochemical affinities are high-alumina mafic alkaline to transitional. They compare closely in major and minor element chemistry with some ocean ridge basalts. The Al-spinel ultramafic-mafic inclusions suite is interpreted as the remnants of a layered ultramafic-mafic “pluton ” which initially crystallized at pressures in the vicinity of 10 kb and subsequently re-equilibrated at subsolidus temperatures (ca 950° C) and comparable pressures. The parent magma was K-poor, ol-normative subalkaline and its fractionation at moderate pressures, controlled mainly by olivine and subcalcic clinopyroxene, resulted in decreases in the derivative liquids in their saturation levels and ol contents, and increases in Al and Ca. These trends are reflected in the compositions of the mafic granulites. The pressure regime of megacryst formation apparently was greater than 10–12 kb i.e. the megacrysts precipitated before acquisition of xenoliths of the Al-spinel granulite suite by the analcimite host. Anorthoclase fractionation produced only limited compositional changes in the original alkali basaltic melt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00373125
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  • 9
    Electronic Resource
    Electronic Resource
    Some subcalcic clinopyroxenites from Salt Lake Crater, Oahu, and their petrogenetic significance (1976)
    Springer
    Contributions to mineralogy and petrology 58 (1976), S. 181-201 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Some inclusions from Salt Lake Crater are essentially single-phase subcalcic clinopyroxenites whose original clinopyroxenes, prior to extensive unmixing, were tschermakitic subcalcic varieties with compositions close to Ca34Mg54Fe12. In addition to copious amounts of orthopyroxene, very minor garnet and spinel also were exsolved from the subcalcic clinopyroxenes. The genesis of the garnet pyroxenite suite at Salt Lake Crater has been examined in terms of three models, namely: (i) cumulates from alkali basaltic magmas; (ii) fractional fusion of “basanitic” garnet clinopyroxenite; and (iii) anatexis of upper mantle lherzolites. Field, mineralogical, chemical and experimental data collectively favour model (iii) and indicate that the nodules are genetically unrelated to their nephelinitic hosts. The Salt Lake garnet pyroxenites can be closely equated with the garnet pyroxenites in magmatictype layers in certain alpine-type ultramafic massifs and they are also similar to many garnet pyroxenite xenoliths in alkaline volcanics from other localities. Liquids produced by anhydrous partial melting of spinel Iherzolite at pressures of approximately 20 kb commonly have picritic chemistries. The crystallization behaviour of picritic liquids at elevated pressures (∼ 20 kb) indicates that the initial crystallization products may be either essentially single-phase subcalcic clinopyroxenites (with minimal high pressure fractionation) or a range of olivine-aluminous orthopyroxene-aluminous subcalcic clinopyroxene-garnet-(spinel) assemblages with variable 100 Mg/(Mg+Fe) ratios (when fractionation has been operative). All these assemblages may be subsequently modified by subsolidus exsolution and recrystallization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00382184
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  • 10
    Electronic Resource
    Electronic Resource
    Analcime phenocrysts in a vitrophyric analcimite — Primary or secondary? (1977)
    Springer
    Contributions to mineralogy and petrology 64 (1977), S. 1-9 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract A vitrophyric analcimite contains phenocrysts of analcime and olivine in a groundmass of titansahlite, titanomagnetite, apatite, and abundant glass. The chemistry of the analcimite and its vitric residuum, the crystallization history of the host, and experimental data collectively favour an interpretation that the analcime “phenocrysts” are ion-exchanged KAl-Si2O6 leucites. Conversion of leucite to analcime resulted from two-way diffusion involving Na+ and H2O, and K+ across the original leucite-glass interfaces and probably was largely accomplished during hydration of the vitric groundmass.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00375282
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