1,722,321 research outputs found
A Cytoskeletal Vortex Drives Phage Nucleus Rotation During Jumbo Phage Replication in E. coli. Birkholz, et al.
No full textRaw data for "A Cytoskeletal Vortex Drives Phage Nucleus Rotation During Jumbo Phage Replication in E. coli". Cell Reports 2022.All images are not deconvolved and not colorized
"Reformer unter den 68ern sind heute in Vergessenheit geraten"
No full textHans-Jürgen Birkholz, AStA-Vorsitzender an der Goethe-Universität von 1967 bis 1968, erinnert sich an sein ebenso forderndes wie vielfältiges Amt. Er bemängelt die seiner Ansicht nach einseitige Fokussierung vieler Rückblicke auf revolutions verliebte Theoretiker
Auctoritate Gratiosi Medicorum Ordinis In Literarum Et Artium Universitate Lipsica Pro Loco in Eodem Obtinendo Quaestionum Physico-Chemico-Medicarum specimen tertium
No full textExhibvit Adamvs Michael Birkholz ... Pvblice Illud A.D. xxiii. Octobr. MDCCLXXVIII. Defensurus Cvm Beniamin Gotthelf Knothe ...Dissertation Universität Leipzig, 177
Viral_Speciation_NatComms_2020
No full textAbstract
Understanding how biological species arise is critical for understanding the evolution of life on Earth. Bioinformatic analyses have recently revealed that viruses, like multicellular life, form reproductively isolated biological species. Viruses are known to share high rates of genetic exchange, so how do they evolve genetic isolation? Here we evaluate two related bacteriophages and describe three factors that limit genetic exchange between them: 1) A nucleus-like compartment that physically separates replicating phage genomes, thereby limiting inter-phage recombination during co-infection. 2) A tubulin-based spindle that orchestrates phage replication and forms nonfunctional hybrid polymers. 3) A nuclear incompatibility factor that reduces phage fitness. Together these traits maintain species differences through “Subcellular Genetic Isolation” where viral genomes are physically separated during co-infection, and “Virogenesis Incompatibility” in which the interaction of cross-species components interferes with virus production
Introduction: Integrating Digital Humanities
Get PDFIntroduction to the inaugural issue of the DH Benelux Journal which explores the theme of Integrating Digital Humanities
Der HUB Zürich - ein reales soziales Netzwerk auch für Culturepreneurs : Interview mit Christoph Birkholz
Get PDFInterview mit Christoph Birkholz, Mitgründer und Managing Director des globalen Community Networks an der Schnittstelle von Social Entrepreneurship, Sustainability und Environmental Social Governance
Spin-orbit coupling effects in one-dimensional ballistic quantum wires
No full textWe study the spin-dependent electronic transport through a one-dimensional ballistic quantum wire in the presence of Rashba spin-orbit interaction. In particular, we consider the effect of the spin-orbit interaction resulting from the lateral confinement of the two-dimensional electron gas to the one-dimensional wire geometry. We generalize a situation suggested earlier (Streda and Seba 2003 Phys. Rev. Lett. 90 256601) which allows for spin-polarized electron transport. As a result of the lateral confinement, the spin is rotated out of the plane of the two-dimensional system. Furthermore we investigate the spin- dependent transmission and the polarization of an electron current at a potential barrier. Finally, we construct a lattice model which shows similar low-energy physics
Spin-polarized currents through interacting quantum wires with nonmagnetic leads
No full textWe study the performance of a quantum wire spin filter that is based on the Rashba spin-orbit interaction in the presence of the electron-electron interaction. The finite-length wire is attached to two semi-infinite nonmagnetic leads. Analyzing the spin polarization of the linear conductance at zero temperature, we show that spin filtering is possible by adequate tuning of the system parameters first considering noninteracting electrons. Next, the functional renormalization-group method is used to capture correlation effects induced by the Coulomb interaction. For short wires we show that the energy regime in which spin polarization is found is strongly affected by the Coulomb interaction. For long wires we find the power-law suppression of the total conductance on low-energy scales typical for inhomogeneous Luttinger liquids while the degree of spin polarization stays constant
Schutzschrift für die Aechtheit der Rosenkreutzergesellschaft /
No full textIncludes engraved horoscope (p. 141).Translator's introd. signed: AdaM Birchwood. X. (i.e Adam Michael Birkholz).Hogart, R. Alchemy,Mode of access: Internet
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