Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Both Point Mutation and RNA Recombination Contribute to the Sequence Diversity of Citrus Viroid III (2000)
    Springer
    Virus genes 20 (2000), S. 243-252 
    Details
    ISSN: 1572-994X
    Keywords: viroids ; apscaviroids ; phylogenetic analysis ; RNA quasi-species ; subviral RNAs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Field-grown citrus trees often harbor complex mixtures of 4–5 different viroid species, and the presence of citrus viroid III (CVd-III) has been shown to reduce the rate of tree growth without inducing disease. To more fully define the structure of its quasi-species, we have examined nine citrus viroid complexes for the presence of previously undescribed sequence variants of CVd-III. Analysis of 86 full-length cDNAs generated from these nine viroid complexes by RT-PCR revealed the presence of 20 new CVd-III variants. Chain lengths ranged from 293–297 nucleotides, and sequence changes were confined largely to the lower portions of the central conserved region and variable domain. The previously described variants CVd-IIIa (297 nt) and CVd-IIIb (294 nt) were clearly predominant, but phylogenetic analysis indicated that certain isolates may contain representatives of two additional fitness peaks. At least one group of CVd-III variants appears to have arisen as a result of RNA recombination. Populations recovered from diseased/declining trees were the most diverse, but even dwarfing isolates originating from old line Shamouti trees showed considerable variability.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008144712837
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    First measurement of the polarisation transfer on the proton in the reactions $$H(\vec e,e'\vec p)$$ and $$D(\vec e,e'\vec p)$$ (1995)
    Springer
    The European physical journal 352 (1995), S. 211-214 
    Details
    ISSN: 1434-601X
    Keywords: 13.40.Fn ; 25.30.Bf
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The measurement of the polarisation transfer to the proton in the reactions $$H(\vec e,e'\vec p)$$ and $$D(\vec e,e'\vec p)$$ performed with longitudinally polarised electrons in quasi-free kinematics is presented. The coincidence measurement was executed atQ 2≈8fm −2 using the 855 MeV, c.w. beam of the Mainz Microtron MAMI. The recoil polarisation was determined by means of a carbon analyser. The experiment shows that the binding of the nucleon does not modify the polarisationP x of the recoil proton within an error ofΔ P x/Px≈10%. The measured polarisation agrees with recent theoretical predictions. Implications for the measurement of the electric form factor of the neutron using the $$D(\vec e,e'\vec n)$$ reaction are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01298910
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    MetateM: An introduction (1995)
    Springer
    Formal aspects of computing 7 (1995), S. 533-549 
    Details
    ISSN: 1433-299X
    Keywords: Modal and temporal logics ; Reactive systems ; Specification ; Prototyping ; Mechanical verification ; Non-procedural languages ; Logic programming
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract In this paper a methodology for the use of temporal logic as an executable imperative language is introduced. The approach, which provides a concrete framework, calledMetateM, for executing temporal formulae, is motivated and illustrated through examples. In addition, this introduction provides references to further, more detailed, work relating to theMetateM approach to executable logics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01211631
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...