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  • 1
    Electronic Resource
    Electronic Resource
    Electrophoretic identification of roach (Rutilus rutilus L.), rudd (Scardinim erythrophthalmus L.), bream (Abramis brama L.) and their natural hybrids (1976)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 9 (1976), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Roach, rudd, bream and their natural hybrids of 2 cm standard length or larger can be definitively identified by their enzyme electrophoretic patterns. Zymograms of lactate dehydrogenase and esterases as produced by vertical starch gel electrophoretic analysis of whole fry or adult eye extracts are the most useful in this respect. The lactate dehydrogenase isozymes, containing B sub-units, migrate more anodally in rudd and bream than in roach. Due to the tetrameric structure of lactate dehydrogenase, in hybrid rudd x roach and roach x bream, eleven isozymes can be observed as compared with six in the parental patterns. Esterases show unique patterns for all species and hybrids. With the exception of one fraction in rudd x bream, the esterase patterns of hybrids show summations of the parental phenotypes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1976.tb04696.x
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  • 2
    Electronic Resource
    Electronic Resource
    Systematics of the Irish pollan (Coregonus pollan Thompson): an electrophoretic comparison with other Holarctic Coregoninae (1978)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 12 (1978), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Evidence is presented on the genetic relationships of 35 coregonine populations from Alaska, Britain, Ireland, Finland and Sweden. This evidence is derived from an electrophoretic analysis of 27 enzyme loci and additional ‘general protein loci’. The Irish pollan C. pollan and the Alaskan C. autumnalis gave identical electrophoretic patterns for all proteins suggesting that they are conspecific and separated only since the last glaciation. C. peled, C. albula and the ‘C. lavaretus’ complex gave unique patterns for a number of proteins. The Fn C. oxyrhynchus X C albula hybrids, from a lake where no other coregonines occur gave a unique pattern for the enzyme phosphoglucose isomerase but all other enzymes were electrophoretically identical to the C. oxyrhynchus parent and the mean gill raker number was closer to this species than in the F1 hybrid.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1978.tb04168.x
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  • 3
    Electronic Resource
    Electronic Resource
    Conserving uranium (1978)
    [s.l.] : Nature Publishing Group
    Nature 271 (1978), S. 300-300 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR,-We read with interest the recent article by John Daviies on this topic (1 December, page 376). However, it does 'Contain a number of scientific errors and misleading statements which we believe it is our duty to point out. He is incorrect in stating that the difference between the 238U^239Pu ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/271300a0
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  • 4
    Electronic Resource
    Electronic Resource
    Polarization spectroscopy with ultrashort light pulses (1979)
    Springer
    Applied physics 18 (1979), S. 257-260 
    Details
    ISSN: 1432-0630
    Keywords: 32 ; 42.55
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract We have demonstrated the feasibility of Doppler-free polarization spectroscopy with a train of ultrashort pulses from a synchronously pumped mode-locked dye laser. The sensitivity of the method is compared with saturation spectroscopy with a single-mode laser.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00885511
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  • 5
    Electronic Resource
    Electronic Resource
    Petrological aspects and evolution of the leucite bearing Lavas from Bufumbira, south west Uganda (1975)
    Springer
    Contributions to mineralogy and petrology 50 (1975), S. 25-46 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Lavas ocouring in the western Rift of Central Africa are characterized by the presence of leucite both as phenocrysts and in the groundmass. Samples studied from the Bufumbira Bay area of the Birunga volcanic field, in south-west Uganda, form two distinct chemical series diverging from basanite compositions. One differentiates through phonolitictephrites to a trachyte and the other differentiates through leueitites to a phonolite. The low-pressure fractionation controls of both series are discussed in terms of the coexisting phases and ultramafic inclusions observed in the lavas. Equilibrium fusion of a mantle phlogopite-bearing peridotite combined with subsequent fractionation is the favoured petro-genetic process to produce a potash-rich basanite liquid, which is considered a likely parent of the Bufumbira lavas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00385219
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  • 6
    Electronic Resource
    Electronic Resource
    The natural occurrence of aegirine—neptunite solid solution (1977)
    Springer
    Contributions to mineralogy and petrology 60 (1977), S. 247-253 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The occurrence of titanian-aegirines in alkaline rocks has been summarized to illustrate the extent of their stability and the nature of the substitution in these clinopyroxenes. The chemistry and substitution of Ti in aegirines is discussed with special reference to the newly observed aegirine — neptunite (Na2Fe2 2+TiSi4O12) solid solution. The available data indicate that neptunite should be included in the pyroxene mineral group as an alkali clinopyroxene.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01166799
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  • 7
    Electronic Resource
    Electronic Resource
    The crystallization of pyroxenes and amphiboles in some alkaline rocks and the presence of a pyroxene compositional gap (1978)
    Springer
    Contributions to mineralogy and petrology 67 (1978), S. 11-15 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Ca- and Na-rich pyroxene-amphibole compositions and textures from a range of felsic alkaline rocks have been studied in detail. The data indicate that in a single sample, when amphibole crystallizes, a gap is observed between Ca- and Na-rich pyroxene compositions. This break in composition is analogous to Aoki's (1964) “immiscibility gap” between Ca-and Na-rich pyroxenes and can be overlooked when considering pyroxene compositions from a suite of rocks. The role of volatiles in governing the stability and composition of amphiboles is discussed. The presence of late crystallizing Na-rich pyroxene is related to the development of peralkinity in the late-stage melts. On extrusion, many alkaline rocks lose their volatiles and amphibole is absent. In these rocks complete zoning from Ca-rich to Na-rich pyroxene compositions are observed within the one sample.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00371628
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  • 8
    Electronic Resource
    Electronic Resource
    The occurrence of ramsayite, titan-låvenite and a fluorine-rich eucolite in a nepheline-syenite inclusion from Tenerife, Canary Islands (1978)
    Springer
    Contributions to mineralogy and petrology 66 (1978), S. 15-20 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract A nepheline syenite inclusion found in an ignimbritic sequence from Tenerife has revealed a variety of minerals which indicate the strongly peralkaline nature of the rock. The major mineral, alkali feldspar, encloses earlier crystallized biotite, Mn-rich magnetite, sphene and perovskite. The late-crystallizing minerals in the interstices include clinopyroxene (aegirine-augite to titanian-aegirine), F-rich arfvedsonite, ramsayite, nepheline, pyrophanite, apatite, sodalite and rare F-rich eucolite and titan-låvenite. The data illustrate the important role of volatiles in the sub-volcanic equivalent of the phonolitic lavas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00376081
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  • 9
    Electronic Resource
    Electronic Resource
    On the pretended occurrence of aegirine-neptunite solid solution (1978)
    Springer
    Contributions to mineralogy and petrology 66 (1978), S. 109-112 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00376091
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  • 10
    Electronic Resource
    Electronic Resource
    Knight shifts and absolute magnetic moments of (h9/2) n proton states in trans-bismuth nuclei (1977)
    Springer
    Hyperfine interactions 3 (1977), S. 397-411 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The Knight shiftsK(FrT1) andK(RaPb) have been measured in connection with a systematic study on magnetic moments of (h9/2) n proton states. The Knight shifts were obtained directly by a comparison of precession frequencies and, indirectly, from relaxation times involving the Korringa relation. Good agreement is found among the results from the different methods; the average values areK(FrT1)=(0.89±0.09)% andK(RaPb)=(1.05±0.15)%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01021572
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