Sebastian Sachse

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Continuing our attempt to explain the degeneracy of the genetic code using basic classical Lie superalgebras, we present the branching schemes for the typical codon representations (typical 64-dimensional irreducible representations) of basic classical Lie superalgebras and find three schemes that do reproduce the degeneracies of the standard code, based on(More)
We derive the amino acid assignment to one codon representation (typical 64-dimensional irreducible representation) of the basic classical Lie superalgebra osp(5|2) from biochemical arguments. We motivate the approach of mathematical symmetries to the classification of the building constituents of the biosphere by analogy of its success in particle physics(More)
BACKGROUND 30-50% of late talkers catch-up their language delay during the third year of life. So far it is unclear whether this is a permanent or an illusionary recovery. The aim of the study was to examine the further language development of late bloomers. METHOD Language skills of 83 three-year-old children (16 late bloomers [LB], 29 late talkers [LT](More)
BACKGROUND Parents' questionnaires are assumed to be reliable instruments for early identification of language retardation. The general use of the ELFRA-2 in practice, however, is limited by its length. The goal of the study was to construct and to evaluate a short version. SUBJECTS AND METHOD The ELFRA-2 was sent to 1397 parents shortly before their(More)
BACKGROUND Early identification of developmental language disorders is a precondition for early intervention and therefore of high clinical relevance. The ELFRA-1 was constructed to identify children at risk for language disorders in the context of the routine examination of children at the age of 12 months. The aim of the study was to determine the(More)
At the beginning the course of language acquisition has a high degree of variability and it is unclear so far, at what age language delay is of clinical relevance. The present study addresses the question whether language skills at the age of 2 years allow prognostic statements and whether children with language delay at this age, are to be considered as(More)
BACKGROUND By considering their general development, 2-year-old children with delayed speech development (late -talkers, LT) were examined and described with respect to linguistic competence and hearing. METHODS Initially, 50 monolingual German speaking LT (age: 23-28 months) were recruited. In addition to audiological tests (impedance testing,(More)
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