„Wovon man nicht sprechen kann, darüber muss man allmählich zu schweigen aufhören.“ Nachdenken über Christa Wolfs Kindheitsmuster (1976).

Der Beitrag beschäftigt sich mit Christa Wolfs Roman Kindheitsmuster (1976), einem der wichtigsten Romane der DDR-Literaturgeschichte. Der Beitrag geht auch auf die Rezeption des Romans ein. Denn wer sich in der Gegenwart mit Christa Wolf beschäftigt, sollte diese Rezeptionsgeschichte zur Kenntnis nehmen. Mit dem Roman entwickelt Christa Wolf eine neue Art autobiografischen Schreibens, deren Traditionen kurz angesprochen werden. Der Roman Kindheitsmuster erzählt von Nelly Jordan, die in den Jahren zwischen 1933 und 1947 heranwächst und von der erwachsenen Frau, die Jahrzehnte später ihre nun polnische Heimat besucht und sich an das Kind erinnert, das sie einmal war.The essay is about Christa Wolfs‘ novel Patterns of Childhood from 1976, one of the most important novels of GDR literature. The essay also deals with the reception of the novel, because who nowadays deals with Christa Wolf should know about the history of reception. In the novel, Christa Wolf develops a new kind of autobiographical writing, the traditions of which are mentioned in a few words. The novel Patterns of Childhood is about Nelly Jordan who grows up between 1933 and 1947, and about the grown-up woman that after some decades visits her hometown which in the meantime has become Polish. Returning to the places of her childhood, she remembers the child she once had been

Soziologische Grundfragen der gesellschaftlichen Kommunikation

HUB(11) - 68 HB 1888 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

Initial stages of glass corrosion in water

Soda-lime-silica glass samples with fresh fracture surfaces were treated in H2O, D2O, H2-18O, and D2-18O for 15, 30, 60, and 120 min at 60 and 85 °C. The leached layers were analyzed by NPB-SIMS, a technique which avoids surface charging by using neutral primary particles. Α distinct isotopic effect occurred neither with respect to the hydrogen isotopes nor with respect to the oxygen isotopes. From these and Corbach's results it is concluded that in the initial stage, every alkali ion exchanges with exactly one hydronium ion, but with increasing time, a growing number of unhydrated protons may participate in the exchange process. The reaction of calcium strongly depends on temperature. At 85 °C calcium ions were found to be leached from the outer region of the hydrated layer and to be enriched in a certain depth beneath the surface. On the other hand, at 60 °C calcium does not react in a measurable degree. When the glass is subjected to irreversible deformation occurring in the "plastic zone" around the crack tip, a surface layer with a modified structure is created. The influence of this deformed layer on the leaching kinetics was taken into account by a simple mathematical model

Soziale Informationstransformation im industriellen Leitungsprozess eine soziologische Studie zur Struktur-, Funktions- und Bedeutungsanalyse

SIGLEHUB(11) - 75 HB 4455 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Behaviour of rf sputter deposited SiO2 and AI2O3 diffusion barriers on float glass at 300 °C in air

In order to study the resistance of high-frequency sputtered thin SiO2 and AI2O3 coatings on float glass to sodium diffusion, coated glasses were submitted to heat treatments in air. The element distribution in the coatings and in the substrates was measured with neutral primary beam-secondary ion mass spectrometry

Palaeohexaploid Ancestry for Caryophyllales Inferred from Extensive Gene-Based Physical and Genetic Mapping of the Sugar Beet Genome (Beta vulgaris)

Dohm JC, Lange C, Holtgräwe D, et al. Palaeohexaploid Ancestry for Caryophyllales Inferred from Extensive Gene-Based Physical and Genetic Mapping of the Sugar Beet Genome (Beta vulgaris). The Plant Journal. 2012;70(3):528-540.Sugar beet (Beta vulgaris) is an important crop plant accounting for 30% of the world's sugar production annually. The genus Beta is a distant relative of currently sequenced taxa within the core eudicotyledons, and genomic characterization of sugar beet is essential in order to make its genome accessible to molecular dissection. Here, we present comprehensive genomic information in genetic and physical maps covering all nine chromosomes. Based on this information we identified the proposed ancestral linkage groups of rosids and asterids within the sugar beet genome. We generated an extended genetic map comprising 1127 single nucleotide polymorphism markers prepared from expressed sequence tags and bacterial artificial chromosome (BAC) end sequences. To construct a genome-wide physical map we hybridized gene-derived oligomer probes against two BAC libraries with 9.5 fold cumulative coverage of the 758 Mbp genome. More than 2500 probes and clones were integrated both in genetic maps and the physical data. The final physical map encompasses 535 chromosomally anchored contigs containing 8361 probes and 22,815 BAC clones. By using the gene order established with the physical map we detected regions of synteny between sugar beet (order Caryophyllales) and rosid species involving 1400-2700 genes in the sequenced genomes of Arabidopsis, poplar, grapevine, and cacao. The data suggest that Caryophyllales share the palaeohexaploid ancestor proposed for rosids and asterids. Taken together, we here provide extensive molecular resources for sugar beet enabling future high-resolution trait mapping, gene identification, and cross-referencing to regions sequenced in other plant species. © 2011 The Authors. The Plant Journal© 2011 Blackwell Publishing Ltd

Ceria: Recent results on dopant-induced surface phenomena

Redox studies on dense zirconia-doped ceria pellets were carried out by thermogravimetric investigations and dilatometry. Up to 1600 K reduction parameters determined by both methods correspond to each other. At higher temperatures, however, thermogravimetry overestimates the degree of reduction since mass loss is not only due to oxygen exsolution but also to selective evaporation of CeO2 whose vapor pressure is considerably higher than that of ZrO2. As a consequence surface segregation of zirconia occurs in (Ce,Zr)O2-d pellets leading to a porous surface zone of Ce2Zr2O7 pyrochlore which gradually grows in thickness. Surface enrichment of zirconia is detrimental for splitting CO2 or H2O since re-oxidation temperatures of (Ce,Zr)O2-d are known to be shifted towards lower temperatures with increasing ZrO2 content. Thus, very harsh reduction conditions should be avoided for the (Ce,Zr)O2-d redox system. The kinetics investigations comprised the high temperature reduction step (T = 1600 K) and the "low" temperature (T = 1000 K) oxidation reaction with a carbon dioxide atmosphere. The reduction kinetics (at around 1600 K and an oxygen activity of 7×10-4 in the gas phase) directly yield the (reduction) equilibrium exchange rate of oxygen in the order of 10-7 mol O/(cm3s) as the kinetics are surface controlled. The oxidation step at around 1000 K, however, occurs in the mixed control or in the diffusion control regime, respectively. From oxygen isotope exchange in combination with SIMS depth profiling oxygen exchange coefficients, K, and oxygen diffusivities, D, were determined for so-called equilibrium experiments as well as for nonequilibrium measurements. From the obtained values for K and D the (oxidation) equilibrium exchange rates for differently doped ceria samples were determined. Their dependency on the oxygen activity and the nature and the concentrations of a tetravalent dopant (Zr) and trivalent dopants (La, Y, Sm) could be semi-quantitatively rationalised on the basis of a master equation for the equilibrium surface exchange rate