753 research outputs found
Rev. J. C. F. Heidmann
No full text295.H4.34.jpg created from original photograph in the [Van Wijk Rhenish Missionary Society Collection] held in the Manuscripts Section of the Stellenbosch Library and Information Service.Photograph of Rev J. C. F. Heidmann as a young man
Rapid kinetics of agonist binding and permeability response analyzed in parallel on acetylcholine receptor rich membranes from Torpedo marmorata
No full textHeidmann T, Bernhardt J, Neumann E, Changeux JP. Rapid kinetics of agonist binding and permeability response analyzed in parallel on acetylcholine receptor rich membranes from Torpedo marmorata. Biochemistry. 1983;22(23):5452-5459
Ute Heidmann et Jean-Michel Adam, Textualité et intertextualité des contes. Perrault, Apulée, La Fontaine, Lhéritier…, Paris, Classiques Garnier, coll. « Lire le xviie siècle », 2010, 400 p.
No full textTextualité et intertextualité des contes. Perrault, Apulée, La Fontaine, Lhéritier… de Ute Heidmann et Jean-Michel Adam se situe aux confins de deux disciplines, la littérature comparée et la linguistique. Le livre s’articule autour de deux parties, une première sous la plume de U. Heidmann et une seconde sous celle de J.-M. Adam. Les approches méthodologiques et théoriques de ces deux parties sont à la fois différentes et complémentaires. L’originalité de ce livre est, comme le souligne Del..
Investigation of galaxies from Vorontsov-Vel'yaminov's second Atla
No full textLarge-scale photographs and low-dispersion spectra obtained for 43 galaxies from Part II of Vorontsov-Vel'yaminov's (1977) Atlas of Interacting Galaxies are studied in order to search for examples of clumpy irregular galaxies and to perform a morphological and spectroscopic investigation of a sample from the cited Atlas. It is found that nearly half the galaxies have a normal Hubble morphological type, that one-sixth are morphologically peculiar, that more than half the galaxies exhibit emission lines, and that the presence of emission lines is apparently independent of morphology. Interesting objects noted include two possible cases of clumpy irregular galaxies, a possible very sinous chain, two spirals with 'blown up' arms, two cases of condensations located nearly symmetrically with respect to the nucleus, and one peculiar spiral with one very bright arc or arm
Applied and fundamental aspects of BABY BOOM-mediated regeneration
No full textKeywords: Somatic embryogenesis, Transcription factor, AINTEGUMENTA-LIKE, BABY BOOM, BBM, Sweet Pepper Transformation Title: Applied and Fundamental Aspects of BBM-mediated Regeneration Author: Iris Heidmann Catergories: Plant regeneration, Plant transformation, transcription factor, somatic embryogenesis Plant regeneration from tissues or single cells is essential for plant propagation. Efficient regeneration can be archieved through somatic embryogenesis using the plant growth regulator auxin or overexpression of specific transcription factors, but the underlying mechanisms are poorly understood. The potency of the BABY BOOM (BBM) AINTEGUMENTA-LIKE transcription factor to induce somatic embryogenesis in crop (sweet pepper) and model species (tobacco) was investigated. It was found that the introduction of BBM into sweet pepper, which is recalcitrant for transformation, enhanced the regeneration of transgenic plants. Exogenous cytokinin was necessary to induce somatic embryogenesis in both tobacco and sweet pepper. The mechanism underlying BBM-mediated somatic embryogenesis was studied in Arabidopsis by identifying BBM target genes (ChIPSeq). Genes controlling zygotic embryo identity and maturation (LAFL), as well as auxin biosynthesis (TAA1, YUCCA) and transport (PIN) are BBM targets. Mutant analysis and chemical inhibition studies showed that these genes play positive roles in BBM-induced somatic embryogenesis. </p
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