4,662 research outputs found

    Ciula, Arianna and Francesco Stella, eds., 2006. Digital philology and medieval texts. Pisa: Pacini editore. 208 pages + CD-ROM.

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    In January 2006, an international conference was organised in Arezzo, Italy, to discuss the principles and purposes of the critical edition produced with the support of humanities computing tools and methods. With 'Digital philology and medieval texts', editors Arianna Ciula and Francesco Stella have published a multi-lingual selection of the conference proceedings, bringing together ten papers in Italian, four in English and one in French

    One-electron oxidation and protonation of diferrocenylphenylphosphine

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    The one-electron oxidation and protonation of diferrocenylphenylphosphine (Fc2PhP) leads to the formation of two distinct, stable cationic phosphorus species, namely the radical cation [Fc2PhP][B(C6F5)4] and the phosphonium ion [Fc2PhPH][B(C6F5)4]. Although their solid-state structures are remarkably similar, the bathochromic shift in the UV-Vis absorption spectrum of the radical cation, signals with distinct multiplicities in the 31P NMR spectra, as well as contrasting quadrupole splitting values in the 57Fe Mößbauer spectra, elucidated the differences between the two cations

    FLO11 mediated filamentous growth of the yeast Saccharomyces cerevisiae depends on the expression of the ribosomal RPS26 genes

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    The RPS26A and RPS26B isogenes of Saccharomyces cerevisiae encode two almost identical proteins of the small 40S ribosomal subunit, which differ by only two amino acid residues. Growth of an rps26B Delta mutant strain is normal, whereas an rps26A Delta strain displays a reduced growth rate and increased sensitivity towards the specific translational inhibitor paromomycin. An rps26A Delta rps26B Delta double mutant strain is inviable. RPS26A but not RPS26B is required for haploid adhesive and diploid pseudohyphal growth mediated by FLO11, which encodes an adhesion. The RPS26A and RPS26B transcripts make up about 70 and 30% of the cellular RPS26 mRNA, respectively. Overexpression of RPS26B, as well as an RPS26B open reading frame driven by the RPS26A promoter, complements the rps26A Delta deletion and restores haploid invasive growth as well as diploid pseudohyphal growth. These results suggest that the two proteins are functionally interchangeable. FLO11-lacZ activity is not present in haploid rps26A Delta yeast mutant strains, even though FLO11 mRNA levels are not reduced. This suggests that the amount of Rps26p is critical for accurate translation of the FLO11 mRNA, and therefore for the dimorphic switch of the baker's yeast from a single cell yeast to an adhesive filamentous growth form

    Application of advanced notch stress approaches to assess fatigue strength of ship structural details: consolidation and dissemination of results

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    This report summarizes research activities carried out in compliance with the extension period of the research project proposed to and funded by the A. Von Humboldt Stiftung. Outline of the activities is reported in the work plan for the fifth period of exchange of the fellowship (extension) of the first author, at the beginning of the present report. Reference is made to previous reports describing activities of former periods. Thereafter, activities are outlined as they were carried out during the stay in Hamburg of the first author. Similarly to previous reports, this report is co-authored by Dipl.-Ing. Claas Fischer, actually Doktorand at TUHH and working on similar topics, as the reported research activities were carried out in strict cooperation
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