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Juliette Langlois Guylaine Mary Hélène Bluzat Agnès Cascio Nathalie Balcar Yannick Vandenberghe 《文物保护研究》2017,62(5):247-265
Prior to the exhibition Portrait-making, Rodin and his models (2009), the Rodin museum wanted to restore two busts of Hanako and Clemenceau. Interestingly, these two sculptures contain pieces of modern modeling materials (MMMs) invented at the end of the nineteenth century as an alternative to clay or waxes. The poor state of conservation of the two portraits made any handling and exhibition impossible. Accordingly, the purpose of this article is twofold: to contribute to technical art history and conservation. Elemental and chemical analyses were done on samples from 12 sculptures (SEM–EDX, FTIR, GC–MS, GC–FID, XRD, synchrotron-based µXRF, µXANES, and µFTIR) aimed at identifying the composition of MMMs used by Rodin on plaster sculptures and establishing hypotheses about the origins of their degradation. This thorough study of their composition and degradation was necessary to implement an appropriate restoration plan. The development of conservation protocols adapted to such materials is rarely documented. Different tests were performed on mock-ups (pH, solubility, adhesion, consolidation, and cleaning). In particular, a protocol based on laser cleaning was developed and successfully applied to remove superficial dust and crusts so that the sculptures regained their original aspect. 相似文献
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Mary A. Anderson Frank Bowles C. O. Taiwo Jan D. Beckmann L. J. Lewis James R. Liesch Godfrey N. Brown H. L. Elvin Shib K. Mitra Richard F. Behrendt Graeme Kemelfield Hugh W. R. Hawes W. A. Dodd A. L. Tibawi 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1971,17(2):220-251
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Friedrich Edding G. W. Parkyn Renzo Titone Oskar Anweiler Frederic Lilge John Vaizey Werner Levi B. Magierska Walter Schultze Mary Ewen Ulich Ben Morris Ignacy SzAniawski G. de Landsheere M. L. Kellmer Pringle W. Lenz Rudolf Haas John Bradley Josip Lukatela M. J. Langeveld S. Wiegersma H. H. Stern H. P. Rickman 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1963,8(3-4):471-498
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Using the General Social Survey from 1972–2014, we examine variation in attitudes toward retaining controversial materials in libraries. Previously controversial topics have become much more widely accepted. We find that other controversies remain, showing how global conflicts become intertwined in local cultural controversies, and how the perceived threat from particular groups informs public concern with disseminating information from those groups. We find that more frequent library users are somewhat less likely to want to remove controversial books from the shelves, although some of these relationships are explained by variation in the respondent’s age, race, and other characteristics. 相似文献
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Established in 2014, Usus (Latin for usage), supported by Counting Online Usage of NeTworked Electronic Resources (COUNTER), but editorially independent, is a community-run website designed to provide a space for librarians, consortia, publishers, aggregators, repository managers, and scholars to discuss all aspects of usage, including particular ways that use is measured. In this session, Usus Supervisory Board members provided an introduction to Usus, outlined the purpose of the community-run site, and discussed how librarians may utilize the site to submit ongoing and complex usage issues. In addition, the presenters engaged attendees in discussing specific e-resource usage issues they have encountered as well as report changes and additions in the recently released COUNTER Code of Practice 4. 相似文献