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  • Artikel  (30.957)
  • Animals  (27.843)
  • Molecular Sequence Data  (4.139)
  • Seismology
  • Signal Transduction
  • Biologie  (30.248)
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  • Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft  (1)
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  • Artikel  (30.957)
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  • 1
    Digitale Medien
    Digitale Medien
    Antiplatelet protease, kistomin, selectively cleaves human platelet glycoprotein Ib
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/General Subjects 1158 (1993), S. 293-299 
    Details
    ISSN: 0304-4165
    Schlagwort(e): Fibrinogenase ; Glycoprotein Ib ; Signal Transduction
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Biologie , Chemie und Pharmazie , Medizin , Physik
    Materialart: Digitale Medien
    URL: http://linkinghub.elsevier.com/retrieve/pii/0304-4165(93)90028-7
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Implications for evolution of nuclear structures of animals, plants, fungi and protoctists
    Amsterdam : Elsevier
    Biosystems 22 (1989), S. 103-116 
    Details
    ISSN: 0303-2647
    Schlagwort(e): Animals ; Cell nucleus ; Evolution ; Plants ; Protoctista ; Taxonomy
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Biologie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1016/0303-2647(89)90039-7
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Earthquake induced damage in an historic area: the September–October 1997 seismic sequence which affected Assisi, Central Italy (1998)
    Springer
    Bulletin of engineering geology and the environment 57 (1998), S. 101-109 
    Details
    ISSN: 1435-9537
    Schlagwort(e): Key words Assisi Earthquake ; Seismology ; Historic buildings ; Umbria-Marche ; Seismic microzonation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie
    Beschreibung / Inhaltsverzeichnis: Résumé La sequence sismique de septembre–octobre 1997 qui a affecté l'une des régions historiques les plus importantes d'Italie Centrale a mis en évidence que l'impact économique des tremblements de terre de magnitude modérée peut être considérable. En ce qui concerne la vulnerabilité du patrimoine artistique et architectural, on a constaté que des trésors inestimables pouvaient subir des dégâts importants même lors de secousses modérées. On attire l'attention sur le fait qu'un microzonage sismique ne pourra être efficace que si l'on prend en compte non seulement l'activité sismique passée mais aussi l'historique des développements urbains.
    Notizen: Abstract  The September–October 1997 seismic sequence in one of the most important historic areas of Central Italy showed that the economic impact of earthquakes of only moderate magnitude can be high. In view of the vulnerability of the artistic and architectural heritage, priceless treasures in such towns as Assisi are very susceptible to damage as a consequence of such seismic events. Attention is drawn to the fact that for seismic microzonation to be effective, it is essential that not only the past seismic activity but also the history of the urban developments is taken into account.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s100640050026
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Phylogenetic position of Dictyostelium inferred from multiple protein data sets (1995)
    Springer
    Journal of molecular evolution 41 (1995), S. 238-246 
    Details
    ISSN: 1432-1432
    Schlagwort(e): Cellular slime molds ; Animals ; Fungi ; Plantae ; Maximum-likelihood method ; Evolution
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The phylogenetic position of Dictyostelium inferred from 18S rRNA data contradicts that from protein data. Protein trees always show the close affinity of Dictyostelium with animals, fungi, and plants, whereas in 18S rRNA trees the branching of Dictyostelium is placed at a position before the massive radiation of protist groups including the divergence of the three kingdoms. To settle this controversial issue and to determine the correct position of Dictyostelium, we inferred the phylogenetic relationship among Dictyostelium and the three kingdoms Animalia, Fungi, and Plantae by a maximum-likelihood method using 19 different protein data sets. It was shown at the significance level of 1 SE that the branching of Dictyostelium antedates the divergence of Animalia and Fungi, and Plantae is an outgroup of the Animalia-Fungi-Dictyostelium clade.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00170678
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
    Digitale Medien
    Digitale Medien
    Evolutionary relationships of eukaryotic kingdoms (1996)
    Springer
    Journal of molecular evolution 42 (1996), S. 183-193 
    Details
    ISSN: 1432-1432
    Schlagwort(e): Small-subunit ribosomal RNA ; Phylogeny ; Animals ; Fungi ; Plants ; Alveolates ; Heterokonts ; Stramenopiles
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The evolutionary relationships of four eukaryotic kingdoms—Animalia, Plantae, Fungi, and Protista—remain unclear. In particular, statistical support for the closeness of animals to fungi rather than to plants is lacking, and a preferred branching order of these and other eukaryotic lineages is still controversial even though molecular sequences from diverse eukaryotic taxa have been analyzed. We report a statistical analysis of 214 sequences of nuclear small-subunit ribosomal RNA (srRNA) gene undertaken to clarify these evolutionary relationships. We have considered the variability of substitution rates and the nonindependence of nucleotide substitution across sites in the srRNA gene in testing alternative hypotheses regarding the branching patterns of eukaryote phylogeny. We find that the rates of evolution among sites in the srRNA sequences vary substantially and are approximately gamma distributed with size and shape parameter equal to 0.76. Our results suggest that (1) the animals and true fungi are indeed closer to each other than to any other “crown” group in the eukaryote tree, (2) red algae are the closest relatives of animals, true fungi, and green plants, and (3) the heterokonts and alveolates probably evolved prior to the divergence of red algae and animal-fungus-green-plant lineages. Furthermore, our analyses indicate that the branching order of the eukaryotic lineages that diverged prior to the evolution of alveolates may be generally difficult to resolve with the srRNA sequence data.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02198844
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
    Digitale Medien
    Digitale Medien
    The detection and recognition of underground nuclear explosions (1995)
    Springer
    Surveys in geophysics 16 (1995), S. 495-532 
    Details
    ISSN: 1573-0956
    Schlagwort(e): Nuclear explosion detection and recognition ; Seismology ; Remote sensing ; Radioactivity ; Ionospheric effects
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie , Physik
    Notizen: Abstract This paper reports on a joint meeting of the Royal Astronomical Society's Joint Association for Geophysics and VERTIC (the Verification Technology Information Centre) held in London in 1992. The topics presented focused on the detection and recognition of underground nuclear explosions. The objective of the meeting was to emphasize the multi-methodological approach that is important in verifying compliance with test-ban treaties. An overview of seismological monitoring was followed by a discussion of the technical and scientific aspects of a global seismic monitoring network, and in particular of the 1991 experiment to test the large-scale international exchange of seismic data between recording stations and data centres world-wide. The current capabilities of satellite remote-sensing were presented, and their use explained in terms of both the provision of information for monitoring the development of foreign nuclear testing programmes and also for providing sufficient information for the evaluation of treaty compliance. A review of radio-isotope sampling showed how the isotopic signature of both air and ground based sampling programmes can be diagnostic of the nuclear source. Finally, previously classified research on the ionospheric effects of underground nuclear explosions was presented, the generated acoustic waves disturbing the ionosphere and producing detectable changes in the reflection of radio and radar signals which have potential as a monitoring technique.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00665683
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  • 7
    Digitale Medien
    Digitale Medien
    Higher mode dispersion measurement (1978)
    Springer
    Pure and applied geophysics 116 (1978), S. 1274-1283 
    Details
    ISSN: 1420-9136
    Schlagwort(e): Seismology ; Surface-wave dispersion ; Higher mode surface waves ; Italy, phase vel. of surface waves
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie , Physik
    Notizen: Abstract A new method is presented for the determination of higher mode dispersion over small distances, using two stations. From an intermediate focus earthquake it has been possible to measure the dispersion of the first and second Rayleigh modes in the period range 25–35 sec and 25–70 sec respectively. Using the almost linear array of Italian long-period stations TRI, BLZ, OLB an estimate of the average errors is also made.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00874686
    Standort Signatur Erwartet Verfügbarkeit
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  • 8
    Digitale Medien
    Digitale Medien
    Eine Verbesserung von Alsops Methode zur Bestimmung der Reflexions- und Transmissionskoeffizienten von Oberflächenwellen (1979)
    Springer
    Pure and applied geophysics 117 (1979), S. 1045-1049 
    Details
    ISSN: 1420-9136
    Schlagwort(e): Seismology ; Surface waves
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie , Physik
    Beschreibung / Inhaltsverzeichnis: Summary Alsop's method (1966) for the non-normal passage of surface waves through a vertical discontinuity is improved by using a new functional to be made stationary on the plane of discontinuity. The modified functional has the dimension of an energy flux and is characterized by the discontinuous surface wave displacements and stresses on the vertical discontinuity. Model calculations which were carried out for SV-waves and Love waves show that the new version of Alsop's method yields in all respects more consistent results than the old one.
    Notizen: Zusammenfassung Die Methode von Alsop (1966) für den Durchgang von schräg einfallenden Oberflächenwellen durch eine vertikale Diskontinuität wird durch Verwendung eines neuen Funktionals, das auf der Diskontinuitätsfläche stationär sein soll, verbessert Das modifizierte Funktional hat die Dimension eines Energieflusses und wird durch diejenige Spannungs- und Verschiebungsdiskontinuität charakterisiert, die durch das Oberflächenwellenfeld auf der Diskontinuitätsfläche erzeugt wird. Modellrechnungen für SV-Wellen und Lovewellen zeigen, daß die neue Version von Alsoos Verfahren in jeder Hinsicht konsistentere Ergebnisse als die bisherige liefert.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00876084
    Standort Signatur Erwartet Verfügbarkeit
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  • 9
    Digitale Medien
    Digitale Medien
    On intermediate-term earthquake prediction in central Italy (1990)
    Springer
    Pure and applied geophysics 134 (1990), S. 79-92 
    Details
    ISSN: 1420-9136
    Schlagwort(e): Seismology ; earthquake prediction ; self-similarity ; algorithm CN ; Central Italy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie , Physik
    Notizen: Abstract The Time of Increased Probability (TIP) for the occurrence of a strong earthquake is determined in Central Italy. This is done with an algorithm that has been successfully applied in other regions of the world (algorithm CN, from the initials of California and Nevada, where the first diagnoses of TIPs were made). The use of normalized functions allows direct application of the orginal algorithm to the new region being studied, without anyad hoc adjustment of the parameters. Retrospective analysis carried on until 1986 shows that TIPs occupy 26 percent of the total time considered and precede four out of five strong earthquakes. Forward monitoring indicates the possible existence of a TIP started in May 1988. Several tests indicate that the results obtained are quite stable, even when using catalogues from different agencies. Apart from obvious practical interest, this research is essential for the worldwide investigation of self-similarity in the origin of strong earthquakes.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00878081
    Standort Signatur Erwartet Verfügbarkeit
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  • 10
    Digitale Medien
    Digitale Medien
    Determination of focal coordinates of near earthquakes in an area of unknown crustal parameters (1977)
    Springer
    Pure and applied geophysics 115 (1977), S. 667-673 
    Details
    ISSN: 1420-9136
    Schlagwort(e): Seismology ; Hypocenter determination ; Focal coordinate determination ; Near earthquakes location
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie , Physik
    Notizen: Summary A new computation method is described which determines the focal coordinates, theP n-andP G-velocity, the focal time and the Moho-depth in the case of near earthquakes. The method is provided especially for areas where the crustal parameters are insufficiently known. It presumes that the standard error ofP n-andP G-arrival times is a minimum. The problem turns out to represent the solution of a set of at least seven equations with seven unknown parameters. Four of these unknowns can be separated in advance. This leads to a considerable simplification. The three remaining unknowns are the focal coordinates. Their best fitting values are found by the gradient method. An example is presented which shows how errors can arise if the initial trial coordinate is chosen at an unfavourable position.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00876131
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