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  • 1
    Electronic Resource
    Electronic Resource
    Electron magnetohydrodynamic turbulence (1999)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 6 (1999), S. 751-758 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Electron magnetohydrodynamic (EMHD) turbulence is studied in two- and three-dimensional (2D and 3D) systems. Results in 2D are particularly noteworthy. Energy dissipation rates are found to be independent of the diffusion coefficients. The energy spectrum follows a k−5/3 law for kde〉1 and k−7/3 for kde〈1, which is consistent with a local spectral energy transfer independent of the linear wave properties, contrary to magnetohydrodynamic (MHD) turbulence, where the Alfvén effect dominates the transfer dynamics. In 3D spectral properties are similar to those in 2D. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.873312
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  • 2
    Electronic Resource
    Electronic Resource
    Instability of a magnetized plasma jet (1998)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 5 (1998), S. 2485-2488 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The stability characteristics of a plasma jet V(x)=sech2 x embedded in a parallel magnetic field B(x)=B0 tanh x are investigated. The Kelvin–Helmholtz kink mode, which dominates at small B0, is stabilized at B0=0.46, while the pinch mode remains unstable up to B0=0.96. Contrary to a nonmagnetized jet, for finite B0 the kink mode saturates quasilinearly by broadening the jet, such that B0/Vmax becomes larger than the marginal value 0.46. Including finite resistivity the nonlinear behavior is eventually governed by the tearing mode for all values of B0≠0, consisting of a single plasmoid moving along the jet. Hence the shear flow cannot stabilize the tearing mode, so that the apparent tearing stability of resistive current sheets observed in numerical simulations of magnetic reconnection is only due to finite-length effects. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.872931
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  • 3
    Electronic Resource
    Electronic Resource
    Two-fluid theory of collisionless magnetic reconnection (1997)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 4 (1997), S. 1002-1009 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Theoretical studies of collisionless reconnection in the framework of two-fluid theory are presented. In the high-β case (β(approximately-greater-than)1) reconnection is controlled by the whistler mode, leading to decoupling of ions from electrons on scales 〈c/ωpi. Though reconnection requires electron inertia, the reconnection rate is independent thereof, controlled only by ion inertia. Reconnection is hence much faster than in the absence of the Hall term. In the opposite limit of small β the strong axial field suppresses the whistler mode. Hence ions have to follow the electrons in the narrow reconnection layer δ∼c/ωpe, forming a macroscopic current sheet which strongly reduces the reconnection rate. Theoretical scaling laws are confirmed by numerical simulations. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.872211
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  • 4
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    The New Nixon or Poor Richard? (1968)
    Boston, Mass., etc. : Periodicals Archive Online (PAO)
    The North American Review. 253:5 (1968:Sept./Oct.) 8 
    Details
    ISSN: 0029-2397
    Topics: English, American Studies , History
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:3197-1968-253-05-000004
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  • 5
    Electronic Resource
    Electronic Resource
    Nucleotide sequence of cro , c II and part of the O gene in phage λ DNA (1978)
    [s.l.] : Nature Publishing Group
    Nature 272 (1978), S. 410-414 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A nucleotide sequence comprising 960 base pairs of bacteriophage λDNA has been determined. The sequence includes the entire genes of the regulatory proteins cro and cII, and part of the O gene, together with control elements for their transcription and translation. The right-hand boundaries ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/272410a0
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  • 6
    Electronic Resource
    Electronic Resource
    Zur Pathogenese des Kontaktekzems (1965)
    Springer
    Archives of dermatological research 223 (1965), S. 558-567 
    Details
    ISSN: 1432-069X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zusammenfassung Ausgehend von den experimentellen Untersuchungen Machers, der in den lymphatischen Stammzellen der Lymphknotenrindenzone die Bildungsstätte des Antikörperprinzips der Ekzem-Spätreaktivität vermutet, wurden autoradiographische Verteilungsstufen nach einmaliger epicutaner Applikation von 3H-DNCB in toxischer Konzentration beim Meerschweinchen durchgeführt. Dabei fand sich nach 3 Tagen gebundenes DNCB vor allem in dem äußeren Drittel der Hornschicht, in der Wand der Haarfollikel und in Spuren in der übrigen Epidermis sowie in der Cutis. Die regionären Lymphknoten der Applikationsseite erwiesen sich nahezu frei von 3H-DNCB bei sonst durchaus deutlicher reticulumzelliger Proliferation, während in der Milz reichlich DNCB vor allem in den undifferenzierten Reticulumzellen des lymphatischen Gewebes nachgewiesen werden konnte. Die sich daraus ergebenden neuen Aspekte hinsichtlich der möglichen Antikörperbildungsstätte werden kurz skizziert.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00517800
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  • 7
    Electronic Resource
    Electronic Resource
    Wasserlösliches (1966)
    Springer
    Archives of dermatological research 227 (1966), S. 191-202 
    Details
    ISSN: 1432-069X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00502825
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  • 8
    Electronic Resource
    Electronic Resource
    Delayed diagnosis of a spontaneous atlanto-axial rotatory dislocation (1984)
    Springer
    Archives of orthopaedic and trauma surgery 103 (1984), S. 212-214 
    Details
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Ein 3jähriger Junge entwickelte ohne ersichtlichen spezifischen Grund einen Schiefhals. Obwohl unmittelbar nach Auftreten der Symptome eine Behandlung begonnen wurde, konnte keine Besserung erzielt werden. 4 Monate später angefertigte Röntgenbilder zeigten eine Vergrößßerung des Abstandes zwischen Dens und Atlas. Trotz dieses Befundes wurde der Patient mit Tenotomie und intensiver Physiotherapie behandelt, der Schiefhals aber blieb bestehen. 2 Jahre später deckten ein Tomogramm and ein Computertomogramm eine komplette, rotationsbedingte Verrenkung zwischen Atlas und Axis auf. In diesem Stadium war eine ursächliche Behandlung nicht mehr möglich. Es konnte nur die physiotherapeutische Behandlung fortgesetzt werden mit dem Ziel, die Kopfstellung zu verbessern.
    Notes: Summary Without any known specific cause a 3-year-old boy developed a torticollis. Although the symptoms were treated immediately there was no improvement. Four months later X-rays showed that the dens-atlas distance was enlarged. In spite of this, he was treated by tenotomy and intensive physiotherapy, but the torticollis remained. Two years later a tomogram and a CT showed a complete rotatory dislocation between atlas and axis. At this stage it was impossible to treat the original cause. Physiotherapy was continued to improve the position of the head.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00435556
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  • 9
    Electronic Resource
    Electronic Resource
    Freie Aminosäuren und zugehörige Substanzen in abschabbarer Hornschicht unbefallener Psoriatikerhaut (1968)
    Springer
    Archives of dermatological research 231 (1968), S. 311-317 
    Details
    ISSN: 1432-069X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Freie Aminosäuren und andere Ninhydrin-positive Substanzen des oberflächlichen Stratum corneum disjunctum unbefallener Haut von Psoriatikern wurden quantitativ durch Säulenchromatographie bestimmt. Urocaninsäure wurde nach papierchromatographischer Isolierung ermittelt. Es ließen sich keine Signifikanten Differenzen gegenüber normaler Hornschicht eurieren. Die Befunde werden diskutiert.
    Notes: Summary Free amino acids and other ninhydrin-positive substances of the superficial stratum corneum disjunctum of uninvolved skin of psoriatics were determinded by column chromatography. Urocanic acid was, after separation by paper chromatography, quantitatively assayed in an spectrometer. No significant differences could be found in comparison with normal human horny layer. The results were discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00498203
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  • 10
    Electronic Resource
    Electronic Resource
    Changes in the serine-specific transfer ribonucleic acid pattern of guinea pig epidermis after corticosteroid treatment (1980)
    Springer
    Archives of dermatological research 269 (1980), S. 153-159 
    Details
    ISSN: 1432-069X
    Keywords: Serine-specific isoaccepting tRNAs ; Guinea pig epidermis ; Keratinization ; Triamcinolon ; Serinspezifische isoakzeptierende tRNA ; Meerschweinchenepidermis ; Keratinisation ; Triamcinolon
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Durch „reversed phase”-Chromatographie von 3H- oder 14C-serinbeladenen Gesamt-tRNA-Präparaten wurde das Multiplizitätsmuster der serinspezifischen Transfer-Ribonucleinsäuren in der Meerschweinchenepidermis ermittelt und mit dem der Leber als Bezugssystem verglichen. Fünf tRNAser (I–V) konnten dargestellt werden, von denen zwei, tRNA I ser und tRNA V ser , „typisch” für die Epidermis zu sein scheinen und insofern möglicherweise Stoffwechselbesonderheiten der epidermalen Zelldifferenzierung reflektieren. Diese Hypothese wurde weiter untermauert, indem gezeigt werden konnte, daß lokale Applikation des Corticosteroids Triamcinolon in der Meerschweinchenepidermis selektiv tRNA I ser und tRNA V ser auf das Zwei- bis Dreifache erhöht. Die mögliche Bedeutung dieser Befunde wurde eingehend diskutiert.
    Notes: Summary The pattern of serine-specific tRNAs from guinea pig epidermis was determined and compared to that from liver by employing reversed phase chromatography on total tRNA preparations aminoacylated with 3H- or 14C-serine. Five tRNA s ser (I–V) were found, two of which, tRNA I ser and tRNA V ser , appear to be “typical” for epidermis and in so far probably reflect in some way metabolic pecularities of epidermal cell differentiation. This hypothesis was further corroborated by showing that the locally applied corticosteroid triamcinolon selectively increases tRNA I ser and tRNA V ser 2-3-fold. The implications of these findings were discussed in detail.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00406535
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