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  • Quasispecies  (2)
  • Atomic, Molecular, and Optical Physics  (1)
  • Concentration simplex  (1)
  • Flow reactor  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Stages of emerging life —Five principles of early organization (1982)
    Springer
    Journal of molecular evolution 19 (1982), S. 47-61 
    Details
    ISSN: 1432-1432
    Schlagwort(e): Prebiotic evolution ; Polynucleotide replication ; Quasispecies ; Hypercycles ; Compartmentalization
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary Five principles underly the evolution of the genetic language: formation of stereoregular heteropolymers, selection through self-replication, evolution of quasispecies towards optimal structures, regulated cooperation between competitors through catalytic hypercycles and evaluation of translation products through compartmentalization. These principles are formulated and illustrated by means of experimental results
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02100223
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 2
    Digitale Medien
    Digitale Medien
    RNA multi-structure landscapes (1993)
    Springer
    European biophysics journal 22 (1993), S. 13-24 
    Details
    ISSN: 1432-1017
    Schlagwort(e): Fitness landscapes ; Partition function ; Quasispecies ; RNA secondary structures
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Physik
    Notizen: Abstract Statistical properties of RNA folding landscapes obtained by the partition function algorithm (McCaskill 1990) are investigated in detail. The pair correlation of free energies as a function of the Hamming distance is used as a measure for the ruggedness of the landscape. The calculation of the partition function contains information about the entire ensemble of secondary structures as a function of temperature and opens the door to all quantities of thermodynamic interest, in contrast with the conventional minimal free energy approach. A metric distance of structure ensembles is introduced and pair correlations at the level of the structures themselves are computed. Just as with landscapes based on most stable secondary structure prediction, the landscapes defined on the full biophysical GCAU alphabet are much smoother than the landscapes restricted to pure GC sequences and the correlation lengths are almost constant fractions of the chain lengths. Correlation functions for multi-structure landscapes exhibit an increased correlation length, especially near the melting temperature. However, the main effect on evolution is rather an effective increase in sampling for finite populations where each sequence explores multiple structures.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00205808
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 3
    Digitale Medien
    Digitale Medien
    Competition and cooperation in catalytic selfreplication (1981)
    Springer
    Journal of mathematical biology 11 (1981), S. 155-168 
    Details
    ISSN: 1432-1416
    Schlagwort(e): Catalytic selfreplication ; Concentration simplex ; Dynamical systems ; Flow reactor ; Hypercycle
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Mathematik
    Notizen: Abstract It is shown that in a flow reactor, hypercyclic coupling of self-reproducing macromolecular species leads to cooperation, i.e. none of the concentrations will vanish. On the other hand, autocatalytic selfreproducing macromolecules usually compete, and the number of surving species increases with the total concentration. Both results are proved under very general assumptions concerning the growth rates.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00275439
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 4
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    Pinning Transition of Bose-Einstein Condensates in Optical Ring Resonators (2018)
    American Physical Society (APS)
    Details
    Publikationsdatum: 2018-11-28
    Beschreibung: Author(s): S. C. Schuster, P. Wolf, D. Schmidt, S. Slama, and C. Zimmermann We experimentally investigate the dynamic instability of Bose-Einstein condensates in an optical ring resonator that is asymmetrically pumped in both directions. We find that, beyond a critical resonator-pump detuning, the system becomes stable regardless of the pump strength. Phase diagrams and que... [Phys. Rev. Lett. 121, 223601] Published Tue Nov 27, 2018
    Schlagwort(e): Atomic, Molecular, and Optical Physics
    Print ISSN: 0031-9007
    Digitale ISSN: 1079-7114
    Thema: Physik
    Publiziert von American Physical Society (APS)
    Standort Signatur Erwartet Verfügbarkeit
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