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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 281 (1979), S. 463-464 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The spectrometer for the region 1.8-15 ?? used a bolometric detector and a Littrow-Pf und optical layout with an NaCl prism. It was fed by a newtonian telescope of 45 cm focal length with a 19 cm x 24 cm primary, giving a field of view of 4 arc minx 24 arc min as defined by the entrance slit. A ...
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Power technology and engineering 12 (1978), S. 1078-1083 
    ISSN: 1570-1468
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Power technology and engineering 9 (1975), S. 123-126 
    ISSN: 1570-1468
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Conclusions 1. The basic property of rock masses in Central Kazakhstan is their characteristic block morphology, represented by tectonic disturbance zones and by the structurally tectonic blocks bounded by these zones. 2. The block morphology of the rock masses determines the considerable nonuniformity of their properties. The nonuniformity in the horizontal direction is governed mainly by the tectonic disturbance zones, the nonuniformity in the vertical direction by the presence of weathering. 3. The characteristics of the rock masses, as related to their block morphology, affect substantially the construction conditions of hydraulic structures, including the selection of the structure location and foundation depth, the nature of the antifiltration elements, the excavation methods, etc.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Computing 22 (1979), S. 325-337 
    ISSN: 1436-5057
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Zusammenfassung In dieser Arbeit betrachten wir die Menge 〈I(R),+,o,−〉 aller Intenvale hinsichtlich der zwei bekannten Verknüpfungen +und o und einer Nicht-Standard-Verknüpfung “−” mit der Eigenschafta−a=o. Eine elementare Differential- und Integralrechnung für intervallwertige Funktionen kann man auf dieser Basis entwickeln.
    Notes: Abstract Some properties of the algebraical system 〈I(R),+,o,−〉, where 〈I(R),+,o〉 is the well known quasinear interval space and “−” is a nonstandard operation such thata−a=o, are given in this paper. The an elementary calculus for interval functions using this nonstandard arithmetic is discussed.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 107 (1976), S. 619-624 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The interaction between magnesium and biphenyl in liquid ammonia has been studied. It was shown that the metal adduct formed reacts slowly with the reaction medium to give tetrahydroderivatives of biphenyl. A comparative study was carried out in order to reveal the influence of the metal used on the reaction pathway. It was found that the nature of the reaction products markedly differs when lithium, sodium or magnesium were used in the reaction. Possible reaction mechanisms are discussed.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1420-9136
    Keywords: Stressin situ ; Seismic velocity anisotropy ; Stress in mines
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Seismic velocity anisotropies measured in underground mines are compared within situ stress measurements in these mines. These underground data are also compared with seismic velocity anisotropies observed by large scale seismic sounding conducted from the earth's surface, The velocity anisotropies are about 10% and the data obtained by different methods on different scales and frequencies agree with each other. The directions of largest and smallest velocities coincide with the largest and smallest horizontal stresses, respectively. These results suggest that the direction and magnitude of stresses in potential mining areas could be estimated from velocity anisotropies observed in seismic prospecting of the area.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 36 (1976), S. 235-242 
    ISSN: 1432-0533
    Keywords: Mirochondria ; Rat hypoglossal nucleus ; Initial part of the axon ; Regeneration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The initial part of the axon including the axon hillock, the initial unmyelinated segment and the beginning of myelinated axon was studied electron microscopically during regeneration, 1–30 days following a crush lesion of the rat hypoglossal nerve. Large mitochondria reaching 1.1 μm in diameter, with abundant cristae and dense granules in the matrix were observed between days 3–21. They formed clusters in the initial myelinated segment of the axon. End-to-end contacts and ribosomes around them were very often visible. The large mitochondria exhibited strong succinate dehydrogenase and NAD · H2 diaphorase activities. The relationship between the appearance of large and active mitochondria in the initial part of the axon and the elevated axonal transport during regeneration of the peripheral nerve is also discussed.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-2048
    Keywords: Antigen spectra ; Embryo (proteins) ; γ-Plantlets ; Germination (seeds) ; Globulins ; Proteins (storage) ; Seedling growth ; Storage proteins ; Zea
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Normal and γ-irradiated caryopses of Zea mays L. were germinated, and the degradation of embryonal antigens (EA) was followed in the endosperms, scutella and embryonic axes of the seedlings, using double immunodiffusion, immunoelectrophoresis and quantitative immunoprecipitation. The predominant transient EA were presumed to be storage proteins related to the reserve globulins of dicotyledonous seeds. Therefore globulins were isolated from maize scutella, purified by (NH4)2SO4 fractionation and isoelectric precipitation, and the molecular weights of the polypeptide units were estimated by discontinuous sodium-dodecyl-sulphate slab electrophoresis. The globulins were found to be identical with the predominant EA and amounted to about 40% of the protein nitrogen in the embryos of mature, non-germinated caryopses. The presumed reserve function of the globulins and the characteristic time course of their degradation in embryonic axes and scutella of maize seedlings are discussed in relation to the two-step pattern of mobilization of nitrogen reserves in germinating cereal caryopses.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Molecular and cellular biochemistry 20 (1978), S. 111-118 
    ISSN: 1573-4919
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Summary The slow reassociating fraction of mouse DNA (“unique DNA”), when allowed to reassociate in 0.14 m sodium phosphate buffer at 50 °C showed a biphasic melting curve with a transition at 78–80 °C. On the basis of this feature, the slow reassociating DNA was separated preparatively into two fractions: “unique DNA” I and II. Their duplexes showed differences with respect to thermal stability, S1 nuclease resistance and rate of reassociation. About one third of the sequences in each fraction were fraction-specific. The conclusion was drawn that for “unique DNA” I these should be the low repetitive or single copy related sequences (multigene families) and for “unique DNA” II—the unrelated single copy sequences or recent families of low repetitive not yet diverged sequences.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Molecular biology reports 4 (1978), S. 143-147 
    ISSN: 1573-4978
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The denaturation of mouse satellite DNA upon melting of chromatin in solution of low ionic strength has been studied. A procedure for preparation of partially denaturated chromatin was developed which enabled the isolation of double-stranded (non-denatured) DNA sequences according to their thermal stability in chromatin. The content of mouse satellite DNA in these DNA sequences was determined by hybridization with RNA, complementary to satellite DNA in order to find the temperature interval of denaturation of satellite DNA. It was found that the melting temperature of satellite DNA in chromatin was lower than that of the total DNA. The results are discussed in relation to previously reported anomalous behaviour of satellite DNA upon melting of chromatin on hydroxyapatite.
    Type of Medium: Electronic Resource
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