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  • 1
    Electronic Resource
    Electronic Resource
    Foreword (1984)
    Springer
    Bulletin of mathematical biology 46 (1984), S. 461-465 
    Details
    ISSN: 1522-9602
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02459496
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  • 2
    Electronic Resource
    Electronic Resource
    Lamellar structure in melt crystallized low density polyethylene (1984)
    Springer
    Polymer bulletin 12 (1984), S. 269-274 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary A combined X-ray diffraction and DSC investigation of the crystalline phase in lamellar low density polyethylene after conventional chlorosulfonation treatment has been carried out. Our results indicate that the acid attack does not involve any heavy group penetration within the lattice. The location of these groups at the basal crystal surface contributes, however, to an enhancement of the melting temperature of the modified lamellae. It turns out that the destruction level of crystalline material at 45°C, after 15–20 h is of the order of 20% and progressively increases for longer periods of time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00275978
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  • 3
    Electronic Resource
    Electronic Resource
    A Quasi-Newton method with modification of one column per iteration (1984)
    Springer
    Computing 33 (1984), S. 353-362 
    Details
    ISSN: 1436-5057
    Keywords: 65H10 ; Nonlinear systems ; Quasi-Newton methods
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Zusammenfassung Wir stellen ein neues Quasi-Newton-Verfahren vor zur Lösung von nichtlinearen simultanen Gleichungen. Bei jeder Iteration wird lediglich eine Spalte vonB k verändert, umB k+1 zu erhalten. Dies erlaubt, wohlbekannte Techniken der Linearen Programmierung zur Faktorisierung vonB k zu benützen. Wir beweisen einen Satz über die lokale Konvergenz für die Methode. Der neue Algorithmus wird mit anderen bezüglich seiner numerischen Eigenschaften verglichen.
    Notes: Abstract In this paper we introduce a new Quasi-Newton method for solving nonlinear simultaneous equations. At each iteration only one column ofB k is changed to obtainB k+1 . This permits to use the well-known techniques of Linear Programming for modifying the factorization ofB k . We present a local convergence theorem for a restarted version of the method. The new algorithm is compared numerically with some other methods which were introduced for solving the same kind of problems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02242278
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  • 4
    Electronic Resource
    Electronic Resource
    Dielectric characteristics of miniature aluminium electrolytic capacitors under stressed voltage conditions (1984)
    Springer
    Journal of applied electrochemistry 14 (1984), S. 9-14 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The effects of applying voltages higher than the nominal voltageV N, for given periods of time, to miniature aluminium electrolytic capacitors has been investigated. The measurements of the current transients, theI–V characteristics, and the a.c. properties indicate that the main effect of subjecting the capacitors to the high voltages is an irreversible change in the capacitor dielectric characteristics as a consequence of a large increase in the resistance of the electrolyte and in the permanent leakage current through the anodic oxide. This current, very noticeable for voltages higher thanV N, is attributed to an electronic conduction mechanism in an avalanche regime. The measured dielectric parameters and their evolution after exposing the capacitors to stressed voltage conditions are interpreted in terms of an extension of McLean's equivalent circuit for an electrolytic capacitor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00611253
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  • 5
    Electronic Resource
    Electronic Resource
    Collision orbits in the oblate planet problem (1984)
    Springer
    Celestial mechanics and dynamical astronomy 33 (1984), S. 375-383 
    Details
    ISSN: 1572-9478
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Some of the properties of the oblate planet problem are derived. We use the technique of blowing up the singularity to study the collision orbits. We define some families of them in terms of their asymptotic behavior.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01241051
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  • 6
    Electronic Resource
    Electronic Resource
    Effect of the Wigner-Seitz boundary conditions on internal conversion coefficients (1984)
    Springer
    The European physical journal 316 (1984), S. 251-254 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Solid state effects are taken into account in an internal conversion coefficients computation by using Wigner-Seitz boundary conditions. Both the bound and free electron wave functions are calculated from an atomic Dirac-Hartree-Fock-Slater self consistent potential. These internal conversion coefficients are compared with those obtained from the usual free atom boundary conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01439896
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  • 7
    Electronic Resource
    Electronic Resource
    Effects of ouabain and furosemide on saliva secretion induced by sympathomimetic agents in isolated, perfused rat submandibular glands (1984)
    Springer
    Cellular and molecular life sciences 40 (1984), S. 557-559 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The presence of 10−3 M ouabain or furosemide in the perfusate inhibited saliva secretion induced by either isoproterenol (10−5 M) or phenylephrine (10−5 M) from isolated rat submandibular glands and caused characteristic alterations in the electrolyte composition of saliva.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01982328
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  • 8
    Electronic Resource
    Electronic Resource
    Modification of clonazepam anticonvulsive activity by its association with other anti-epileptic drugs (1977)
    Springer
    Cellular and molecular life sciences 33 (1977), S. 640-642 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The modification of the anti-epileptic activity of clonazepam by other anticonvulsivants is studied. The results vary according to the drug and technique used. The usefulness of the 2 techniques employed is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01946548
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  • 9
    Electronic Resource
    Electronic Resource
    A zone of mylonite and related ductile deformation beneath the alpujarride nappe complex, betic cordilleras, S. Spain (1984)
    Springer
    International journal of earth sciences 73 (1984), S. 773-785 
    Details
    ISSN: 1437-3262
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Description / Table of Contents: Abstract A zone of mylonite is commonly developed beneath the Alpujarride nappe complex. The contact with the underlying Nevado-Filabride Complex is marked by a zone of calc mylonite, dolomitic breccia, iron-rich carbonate rocks, and marble. These lie on a thin zone of ultramylonite derived from Nevado-Filabride schist. Related ductile deformation decreases downwards, but may extend up to 400 m beneath the contact. This deformation produces a characteristic platy foliation, a strong elongation lineation, and a proto-mylonitic microstructure. Kinematic analysis of these rocks may help determine the direction of nappe transport. Mylonitic or protomylonitic microstructures are not developed in the Alpujarride rocks, although these are strongly deformed adjacent to the contact. Microstructural evidence suggests that deformation occurred by pressure-solution in these rocks, and not by the crystal-plastic processes that operated in the Nevado-Filabride protomylonitic schists.
    Abstract: Resumen Bajo el complejo de mantos de los Alpujárrides se observa comunmente el desarrollo de una zona milonitica. El contacto de dicho complejo con el de Nevado-Filabride está señalado por una zona de calcomilonitas, brechas dolomiticas, rocas carbonatadas ricas en hierro y mármoles. Estos se situan en una zona estrecha de ultramilonitas que se derivan de los esquistos del Nevado-Filabride, La deformación dúctil asociada decrece en sentido descendente, pero puedo extenderse hasta 400 m por debajo del contacto. Esta deformation produce una foliación planar characterística, una lineación de extensión muy pronunciada y una microestructura protomilonítica. Los análisis cinemáticos de éstas rocas pueden ayudar a determinar la dirección de transporte de los mantos. Las microestructuras miloníticas y protomyloníticas no se desarrollan en las rocas Alpujárrides, aunque dichas rocas están fuertemente deformadas junto al contacto. Las observaciones microestructurales sugieren que la deformación tuvo lugar por «pressure-solution» y no por procesos de plasticidad cristalina como los operantes en los esquistos protomiloníticos del Nevado-Filabride.
    Notes: Zusammenfassung Im Liegenden des Deckengebäudes der Alpujarriden findet sich an vielen Stellen eine Mylonitzone. Der Kontakt mit den unterlagernden nevado-filabriden Gesteinen ist durch Kalkmylonite, Dolomitbrekzien, eisenreiche Karbonate und Marmore markiert. Diese liegen auf einer dünnen Zone von Ultramylonit, der sich aus nevado-filabriden Glimmerschiefern entwickelt hat. Diese plastische Verformung nimmt zum Liegenden hin ab, kann aber bis zu 400 m unterhalb des Deckenkontaktes reichen. Sie erzeugt eine charakteristische, plattige Schieferung, eine stark ausgeprägte Streckungslineation und eine protomylonitische Mikrostruktur. Mit einer kinematischen Analyse dieser Gesteine kann die Transportrichtung der Deckeneinheiten bestimmt werden. Die Glimmerschiefer und Phyllite alpujarrider Zuordnung besitzen keine mylonitische Mikrostruktur, obwohl sie stark deformiert sind. Dies deutet darauf hin, daß, im Gegensatz zum intrakristallinen Gleiten in den nevado-filabriden Protomyloniten, vor allem Drucklösung als Deformationsmechanismus anzusehen ist.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01824981
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  • 10
    Electronic Resource
    Electronic Resource
    Données sur le metamorphisme regional hercynien dans le dôme du Tormes (provinces de Salamanca et Zamora, Espagne) (1977)
    Springer
    International journal of earth sciences 66 (1977), S. 91-98 
    Details
    ISSN: 1437-3262
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Description / Table of Contents: Abstract In this paper the general characteristics of the Hercynian metamorphism in an area situated in the Central-Western part of the Iberian Peninsula are given. This zone is characterised by the presence of a Precambrian series and an Ordovician one affected by three main phases of Hercynian deformation, and by the presence of two different granitic series. Four different metamorphic zones have been established and they are characterised by the appearance of the following index minerals: chlorite, biotite, andalusitecordierite and sillimanite-K feldspar. In each zone the present parageneses are studied according theThompson andBarker methods and a main suite of subfacies belonging to a low pressure metamorphism of Abukuma type is defined. The isograds, though locally have the NW-SE hercynian direction, draw as a whole a transversally elonged dome. These unexpected attitude of the isograds could be originated by the deep socle characteristics.
    Abstract: Résumé Dans ce travail sont présentees les caractéristiques du métamorphisme régional hercynien dans une zone située dans la partie Centre-Occidentale de la Peninsule Iberique. Cette zone est caractérisee par la présence de materiaux proterozoïques et de un Ordovicien discordant afectés par trois phases principales de deformation hercyniennes et par l'existence de deux séries granitiques différentes. Quatre zones métamorphiques caractérisees par l'apparition des mineraux indices suivants y ont été définies: chlorite, biotite, andalousite-cordierite et sillimanite-K feldspath. Dans chaque zone les différentes paragéneses existantes on été analysées par la méthode deThompson etBarker. Cela a permis de définir une suite principale de subfacies qui correspondent a un métamorphisme a basse pression type Abukuma. Les isogrades, bien que coïncidant localement avec la direction hercynienne NW-SE, dessinent dans leur ensemble un dôme allongé transversalement. Cette disposition paradoxale pourrait être due a la nature profonde du socle.
    Notes: Zusammenfassung Die hercynische Metamorphose in einem Gebiet des zentralen Westteiles der Iberischen Halbinsel wird dargestellt. Diese Zone ist charakterisiert durch das Vorhandensein einer präkambrischen sowie einer ordovizischen Serie, die durch drei Hauptphasen hercynischer Deformation geprägt wurden, und zwei verschiedener granitischer Serien. Vier verschiedene metamorphe Zonen werden unterschieden, die durch das Vorkommen der folgenden Index-Minerale gekennzeichnet sind: Chlorit, Biotit, Andalusit-Cordierit und Sillimanit-Kali-Feldspat. In jeder Zone werden die vorhandenen Paragenesen nach der Thompson- und der Barker-Methode untersucht, und eine Subfazies-Abfolge, die zu einer Niederdruckmetamorphose des Abukama-Typs gehört, wird beschrieben. Die Isograden bilden, obwohl sie stellenweise mit der hercynischen NW-SE-Richtung zusammenfallen, insgesamt eine längliche Queraufwölbung. Diese ungewöhnliche Erscheinung könnte auf die große Tiefe des Grundgebirges zurückzuführen sein.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01989566
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