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  1. No Access

    Chapter

    The Exposure of Anthropogenic Systems to Natural Hazards

    As there is a scarcity of literature quantifying the direct and indirect damage and consequential loss caused by most natural hazards, we shall treat some important aspects here. In view of the many parameters...

    H. Tiedemann in Natural Disasters and Sustainable Development (2004)

  2. No Access

    Chapter

    The Economical Consequences of Floods and Landslides

    It is very often not appreciated by the academic community that those affected by floods and landslides, or by other natural perils, are not or at least primarily not interested in academic research and the re...

    H. Tiedemann in Floods and Landslides: Integrated Risk Assessment (1999)

  3. No Access

    Article

    Neural inducing factors in neuroblastoma and retinoblastoma cell lines

    G. V. Lopashov, H. Selter, M. Montenarh, W. Knöchel, H. Grunz… in Naturwissenschaften (1992)

  4. No Access

    Article

    The vegetalizing factor belongs to a family of mesoderm-inducing proteins related to erythroid differentiation factor

    M. Asashima, H. Nakano, H. Uchiyama, M. Davids, S. Plessow… in Naturwissenschaften (1990)

  5. No Access

    Article

    Mesoderm induction and blood island formation by angiogenic growth factors and embryonic inducing factors

    Factors which induce mesoderm, including endothelium lined cavities and primitive blood cells in omnipotent amphibian ectoderm, have been isolated from different sources. Recently it was shown that angiogenic ...

    W. Knöchel, H. Grunz, B. Loppnow-Blinde, H. Tiedemann in Blut (1989)

  6. No Access

    Article

    Mesoderm induction by transforming growth factor β: Medium conditioned by TGF-β-treated ectoderm enhances the inducing activity

    W. Knöchel, H. Tiedemann in Naturwissenschaften (1989)

  7. No Access

    Article

    Mesoderm-inducing factors

    W. Knöchel, J. Born, P. Hoppe, B. Loppnow-Blinde, H. Tiedemann… in Naturwissenschaften (1987)

  8. No Access

    Chapter

    Neural Embryonic Induction

    In 1923 it was discovered by Hilde Mangold and Hans Spemann that the blastoporal lip, the presumptive mesodermal anlage, induces in ventral ectoderm a second neural anlage. In normal development ventral ectode...

    H. Tiedemann in The Role of Cell Interactions in Early Neurogenesis (1984)

  9. No Access

    Chapter and Conference Paper

    Signals of Cell Determination in Embryogenesis

    Amphibian eggs and embryos have been widely used to study the development of vertebrates. Early stages which can be handled with relative ease, are endowed with a high regulatory capacity. To make us familiar ...

    H. Tiedemann in Biochemistry of Differentiation and Morphogenesis (1982)

  10. No Access

    Article

    Hight performance gel permeation chromatography of proteins

    Proteins in the molecular weight range of 10 000–170 000 were separated by high performance gel permeation chromatography. Silica particles with 30 nm or 50 nm pores were derivatized with glycidoxy-propyltrime...

    W. Schwarz, H. Tiedemann in Molecular Biology Reports (1981)

  11. No Access

    Article

    R-loop hybridization of collagen DNA: Separation in Cs2SO4 gradients

    High molecular weight poly(A)+ RNA (26–35 S) from chicken embryo trunks which is enriched for collagen mRNA was iodinated and hybridized to DNA under conditions of R-loop formation. The R-loops were separated in ...

    J. Born, B. Wittig, St. Wittig, H. Tiedemann in Molecular Biology Reports (1980)

  12. No Access

    Article

    Chicken ribosomal DNA: Gene frequency and purification by R-loop hybridization

    The genes for ribosomal RNA of chicken are present in about 200–240 copies per haploid genome. The ribosomal genes were separated from the bulk of DNA by different methods. In CsCl-actinomycin D gradients the ...

    C. Lehmann, M. Warnhoff, W. Knochel, D. Lange, J. Born… in Molecular Biology Reports (1979)

  13. No Access

    Article

    Template active chromatin structures: Degradation by deoxyribonuclease I

    Chicken embryos were pulse-labelled in vivo with [3H]uridine (10 min), the chromatin isolated and treated with DNAse I. The residual chromatin was separated from the degradation products by centrifugation. The na...

    W. Knöchel, K. Asahi, H. Tiedemann in Molecular Biology Reports (1977)

  14. No Access

    Article

    ‘Passie’ thinking, a hypothesis

    Based on observations and on analogical deductions from the organization of the cerebellum, a hypothesis of a ‘passive’ process of thinking is described. According to it, we try to program the cerebrum for the...

    H. Tiedemann in Experientia (1976)

  15. No Access

    Chapter and Conference Paper

    Pretranslational Control in Embryonic Differentiation

    The topic of this symposium is the regulation of transcription and translation in eukaryotes. This topic is closely related to cell differentiation which may be regulated either at the level of transcription o...

    H. Tiedemann in Regulation of Transcription and Translation in Eukaryotes (1973)

  16. No Access

    Article

    Outline of a cybernetic working hypothesis of cochlea based on experiments

    Basierend auf eingehenden Versuchs- und Messreihen am Hörorgan des Wasserbüffels (Anoa bubalis), dessen Innenohr dem menschlichen nahezu gleicht, wird ein kybernetisches Modell des Hörinstruments geschildert, das...

    H. Tiedemann in Experientia (1969)

  17. No Access

    Article

    Über die Wirkung von Phenanthrenchinon (9, 10) und einer wasserlöslichen Transportform auf Glykolyse und Atmung des Ascites-Tumor

    Phenanthrenchinon (9, 10) and hydrochinon-bis-glycylester prepared as water-soluble ‘transportform’, are strong inhibitors of glycolysis. Glycolysing cells are depleted from ATP in a few minutes.

    H. Tiedemann, H. J. Risse in Experientia (1960)

  18. No Access

    Article

    Zur Gewinnung von Induktionsstoffen aus Hühnerembryonen

    From chick embryos, fractions were prepared which, after implantation into new gastrulae, preponderantly give deuterencephalic or spinocaudal inductions. The behaviour of these fractions after incubation with ...

    H. Tiedemann, Hildegard Tiedemann in Experientia (1957)