@article{SchmuckGeiseLinsenmair1994,
  author    = {Schmuck, R. and Geise, W. and Linsenmair, Karl Eduard},
  title     = {Life cycle strategies and physiological adjustments of Reedfrog Tadpoles (Amphibia, Anura, Hyperoliidae) in relation to environmental conditions.},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-31009},
  year      = {1994},
  abstract  = {The relationship between different degrees of intraspecific crowding of reedfrog tadpoles and their physiological responses to a deterioration of the natal pond water quality was examined under laboratory conditions. Tadpoles that were reared at a lower density metamorphosed significantly earlier than those raised at a higher density. As density increases, the average body length at metamorphosis decreases. However, at low tadpole density, a significantly higher diversity of body size classes among freshly metamorphosed froglets was observed than under more crowded conditions. Mortality increased during metamorphic climax and was inversely correlated with the tadpole density. In ephemeral ponds, an accumulation of nitrogenous wastes from metabolic processes and/or a concentration by evaporation in prolonged rainless periods can pose a considerable chemical stress to reedfrog tadpoles. Hyperolius viridiflavus ommatostictus responded to an increasing ammonia concentration with an activity increase of the ornithine cycle (intensified urea synthesis). hi contrast, Hyperolius marmoratus taeniatus exhibited a strong tolerance against high ammonia levels. A deterioration of the natal pond water quality caused H. v. ommatostictus and H. v. nitidulus tadpoles to adjust to harsher climatic conditions at the time of metamorphosis. This physiological preadjustment enabled the froglets to start feeding and growing immediately after metamorphosis even at low air humidity and rare precipitation events. In contrast, froglets that were raised in daily refreshed water exhibited high mortality rates if subjected to identical conditions. As one possible indicator of the actual climatic conditions prevailing in the surrounding terrestrial habitat, fluctuations in the water ammonia level are discussed.},
  language  = {en}
}
@article{Schneider1994,
  author    = {Schneider, Wolfgang},
  title     = {Der {\"U}bergang in weiterf{\"u}hrende Schulen nach dem 4. oder 6. Grundschuljahr? Theoretische Analysen und empirische Befunde zur Prognose des Schulerfolgs},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-87465},
  year      = {1994},
  abstract  = {No abstract available.},
  subject      = {Grundschule},
  language  = {de}
}
@article{Schneider1994,
  author    = {Schneider, Wolfgang},
  title     = {Lese-Rechtschreib-Forschung heute: Einf{\"u}hrung},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-87489},
  year      = {1994},
  abstract  = {Es wird eine Kurz{\"u}bersicht {\"u}ber relevante Str{\"o}mungen der Lese-Recht chreib-Forschung gegeben. Nachdem die sog. Legasthenieforschung aufgrund konzeptueller und methodologischer Probleme in die Kritik geraten war, treten gegenw{\"a}rtig eher theorieorientierte An {\"a}tze in den Vordergrund. euere Modelle zum Schriftspracherwerb haben zahlreiche L{\"a}ngsschnittstudien stimuliert, die die Relevanz metalinguistischer F{\"a}higkeiten f{\"u}r den p{\"a}teren Schriftspracherwerb dokumentieren.},
  subject      = {Leseforschung},
  language  = {de}
}
@article{SchneiderViseReimersetal.1994,
  author    = {Schneider, Wolfgang and Vis{\´e}, Mechthild and Reimers, Petra and Blaesser, Barbara},
  title     = {Auswirkungen eines Trainings der sprachlichen Bewußtheit auf den Schriftspracherwerb in der Schule},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-87491},
  year      = {1994},
  abstract  = {Mit der vorliegenden Trainingsstudie wird der Versuch unternommen, Ergebni e eines F{\"o}rderprograrnms zur sprachlichen Bewußtheit (Lundberg, Frost \& Petersen 1988) im deutschsprachigen Raum zu validieren. An unserer Replikationsstudie nahmen insgesamt 371 Kinder teil, von denen 205 Kinder einer Trainingsgruppe und 166 Kinder einer Kontrollgruppe zugewiesen wurden. Das F{\"o}rderprograrnm bestand aus Sprachspielen, die {\"u}ber einen Zeitraum von zirka 6 Monaten t{\"a}glich 15 Minuten in den Kindergartengruppen durchgef{\"u}hrt wurden. Die Kontrollgruppe erhielt keine spezielle F{\"o}rderung, sondern nahm am regul{\"a}ren Kindergartenprogramm teil. Indikatoren der sprachlichen Bewußtheit und weitere metalinguistische und kognitive Variablen wurden unmittelbar vor und nach der F{\"o}rderung erhoben. Zu Beginn des ersten Schuljahres wurde ein metalinguistischer Transfertest, gegen Ende dann ein Rechtschreibtest durchgef{\"u}hrt. Die Befunde replizieren die Ergebnisse der d{\"a}nischen Ausgangsstudie insofern, als kurz- und langfristige Trainingseffekte gesichert werden konnten. Sie verdeutlichen jedoch zus{\"a}tzlich, daß die Qualit{\"a}t der F{\"o}rderung f{\"u}r die Langzeitwirkung entscheidend war.},
  subject      = {phonologische Bewusstheit},
  language  = {de}
}
@article{SchneiderSchauliesSchneiderSchauliesSchusteretal.1994,
  author    = {Schneider-Schaulies, J{\"u}rgen and Schneider-Schaulies, S. and Schuster, A. and Bayer, M. and Pavlovic, J. and ter Meulen, V.},
  title     = {Cell type specific MxA-mediated inhibition of measles virus transcription in human brain cells},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-34313},
  year      = {1994},
  abstract  = {Measles virus (MV)-specific transcription in human brain cells is characterized by particularly low abundances of the distal mRNAs encoding the MV envelope proteins. Similar transcriptional restrictions of the closely related vesicular stomatitis virus have been observed in mouse fibroblasts constitutively expressing the interferon-inducible MxA protein (P. Staeheli and J. Pavlovic, J. Virol. 65:4498-4501, 1991). We found that MV infection of human brain cells is accompanied by rapid induction and high-level expression of endogenous MxA proteins. After stable transfection of MxA, human glioblastoma cells (U-87-MxA) released 50- to 100-fold less infectious virus and expression of viral proteinswas highly restricted. The overall MV-specific transcription Ievels were reduced by up to 90\%, accompanied by low relative frequencies of the distal MV-specific mRNAs. These restrictions were linked to an inhibition of viral RNA synthesis and not to a decreased stability of the viral RNAs. Our results indicate that expression of MxA is associated with transcriptional attenuation of MV in brain cells, thus probably contributing to the establishment of persistent MV central nervous system infections. In addition, the mechanism of MxA-dependent resistance against MV infection, in contrast to that of vesicular Stomatitis virus, is cell type specific, because an inhibition of MV glycoprotein synthesis independent of transcriptional alterations was observed in MxA-transfected human monocytes},
  language  = {en}
}
@article{SchneiderSchauliesSchneiderSchauliesSchusteretal.1994,
  author    = {Schneider-Schaulies, Sibylle and Schneider-Schaulies, J{\"u}rgen and Schuster, A. and Bayer, M. and Pavlovic, J. and ter Meulen, V.},
  title     = {Cell type specific MxA-mediated inhibition of measles virus transcription in human brain cells},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-62255},
  year      = {1994},
  abstract  = {No abstract available},
  subject      = {Virologie},
  language  = {en}
}
@article{SchneiderSchauliesSchnorrDunsteretal.1994,
  author    = {Schneider-Schaulies, Sibylle and Schnorr, J.-J. and Dunster, L. M. and Schneider-Schaulies, J{\"u}rgen and ter Meulen, Volker},
  title     = {The role of host factors in measles virus persistence},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-54944},
  year      = {1994},
  abstract  = {As critical steps in the life cycle oJ measles virus (Mfl), the e.fficiency of uptake into and replication in susceptible host cells are governed by cellular determinants. Measles virus infections of cells of the human CNS are characterized by particular constraints imposed on v1:ral transcription and translation attenuating viral gene Junctions and thus contributing to the pathogenesis oJ MV persistence in these cells.},
  subject      = {Immunologie},
  language  = {en}
}
@article{SchwartzNeveEisenmanetal.1994,
  author    = {Schwartz, Faina and Neve, Rachel and Eisenman, Robert and Gessler, Manfred and Bruns, Gail},
  title     = {A WAGR region gene between PAX-6 and FSHB expressed in fetal brain},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-59125},
  year      = {1994},
  abstract  = {Developmental delay or mental retardation is a frequent component of multi-system anomaly syndromes associated with chromosomal deletions. Isolation of genes involved in the mental dysfunction in these disorders should define loci important in brain formation or function. We have identified a highly conserved locus in the distal part of 11 p 13 that is prominently expressed in fetal brain. Minimal expression is observed in a number of other fetal tissues. The gene maps distal to PAX-6 but proximal to the loci for brain-derived neurotrophic factor (BDNF) and the beta subunit of follicle stimulating hormone (FSHB), within a region previously implicated in the mental retardation component of some WAGR syndrome patients. Within fetal brain, the corresponding transcript is prominent in frontal, motor and primary visual cortex as weil as in the caudate-putamen. The characteristics of this gene, including the striking evolutionary conservation at the locus, suggest that the encoded protein may function in brain development.},
  subject      = {Biochemie},
  language  = {en}
}
@article{SchwarzHameisterGessleretal.1994,
  author    = {Schwarz, Klaus and Hameister, Horst and Gessler, Manfred and Grzeschik, Karl-Heinz and Hansen-Hagge, Thomas E. and Bartram, Claus R.},
  title     = {Confirmation of the localization of the human recombination activating gene 1 (RAG1) to chromosome 11p13},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-59136},
  year      = {1994},
  abstract  = {The human recombination activating gene 1 (RAGl) has previously been mapped to chromosomes 14q and 11 p. Here we confirm the chromosome 11 assignment by two independent approaches: autoradiographic and fluorescence in situ hybridization to metaphase spreads and analysis of human-hamster somatic cell hybrid DNA by the polymerase chain reaction (PCR) and Southern blotting. Our results unequivocally localize RAG1 to llp13.},
  subject      = {Biochemie},
  language  = {en}
}
@article{SchuesslerHenjesKunst1994,
  author    = {Sch{\"u}ssler, Ulrich and Henjes-Kunst, Friedhelm},
  title     = {Petrographical and Geochronological Investigations on a Garnet-Tourmaline Pegmatite from Ringgold Knoll, Oates Coast, Antarctica},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-31789},
  year      = {1994},
  abstract  = {The Ringgold Knoll pegmatite, a late-stage member of the Granite Harbour Intrusives, crosscuts high-grade Wilson gneisses of the Oates Coast, which forms the westernmost part of the Wilson Terrane at the Pacific end of the Cambro-Ordovician Ross orogenic belt in West Antarctica. The pegmatite mineral assemblage consists of K-feldspar, plagioclase, quartz, garnet (almandinespessartine-pyrope), dark tourmaline (schorl-dravite), muscovite, apatite, monazite, zircon, blue AI-rich tourmaline and dumortierite in order of decreasing abundances. Major, minor and rare earth elements are reported for the greater part of the mineral assemblage. The time of pegmatite emplacement is constrained by Rb-Sr and Sm-Nd isochron ages of 492 ± 8 (2a) Ma and 500 ± 40 (2a) Ma, respectively. High initial 87Sr/86Sr of 0.7315 ± 0.0003 and low E Nd,t of -8.7 ± 1.2 strongly support an origin of the magma from highly evolved crustal source rocks. K-Ar and Ar-Ar model ages of about 470 to 475 Ma for igneous muscovite indicate that the pegmatite together with its wall rocks spent a prolonged period at elevated temperatures before final cooling below about 350 °C. The muscovite dates may give an estimate for the time of exhumation of the Oates Coast crystalline basement along two major late Ross orogenic detachment zones within the Wilson Terrane i.e. the Wilson and the Exiles thrusts (c.f. FL{\"O}TTMANN and KLEINSCHMIDT, 1991).},
  language  = {en}
}