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AbstractThis paper describes the examination and treatment of three polychrome wooden sculptures by Pedro de Mena, an important seventeenth-century Spanish sculptor. These were three interesting cases, involving not only the usual conservation processes but also special situations such as the recovery of a glass eye, the replacement of missing parts and polychromy with the help of old photographs, and the analysis of a sculpture where the flesh colours varied depending on whether or not they had been exposed to sunlight. Our understanding of polychrome sculpture technique is enriched with new information concerning the blues of the cloaks, coloured glazes, and materials added to the paint to achieve different effects. 相似文献
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AbstractLittle has been written about the roles of conservators in regard to the preservation of human remains. This article examines the new challenges that face conservators as we become more involved with human remains under the new laws and approaches that protect indigenous community rights. The authors explore three areas critical to this debate, namely conservation expertise, training and outreach. Three scenarios for the conservator's role are presented. The authors suggest conservators should aim for the third role, that of ‘contributing colleague’, especially in the multidisciplinary and highly sensitive area involving the study of human remains. Also presented is a case study involving teamwork with the Kennewick Man remains. Though the discussion is limited to applications of preservation issues to human remains, the concepts have wider applications in the conservation field in general. 相似文献
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AbstractManfred Koller, former head of the Bundesdenkmalamt in Vienna, was awarded Honorary Fellowship of the International Institute for the Conservation of Historic and Artistic Works at the Annual General Meeting in January 2006. This is a written version of the paper he delivered after the award. 相似文献
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AbstractThe ancient Egyptian bronze falcon figures in the collection of the Walters Art Gallery, Baltimore, were studied using radiography, endoscopy and corrosion analysis. A number of the bronzes were found to contain bird remains. The study also provided a comparison of the efficacy of different radiographic techniques. 相似文献
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AbstractThe recent development of a phosphate hardening paste without oxalates, as well as consideration of the mixed calcium oxalate-phosphate composition of the hardest urinary stones, provide evidence to suggest that the formation of some patinas is the result of old protective treatments on stone surfaces. The formation of patinas with phosphates and oxalate scialbatura on marble and limestone is discussed as a contribution to the debate amongst conservators and scientists about the nature, composition and origin of these patinas. It is concluded that for the formation of both the inner part and the outer part of the patinas, the concurrent action of microorganisms and man is necessary. In both cases, man provides the foods and the microorganisms effect the transformation. 相似文献
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AbstractJapanese sculptures are made of wood, dry lacquer, clay, gilt bronze and stone. Buddhistic statues, made of wood, are the most abundant. The painting techniques of the wooden sculptures, including ground coating, pigments, and application of Japanese lacquer, are described, and typical examples of Buddhistic statues are given. Specific case studies on a clay statue and a wooden sculpture are made. 相似文献
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AbstractBasketry artifacts fabricated from spruce and cedar limb wood and root and the inner bark of yellow and western red cedar have been found in water-saturated archaeological sites in the Pacific Northwest since the mid-twentieth century. These artifacts range in age from a few centuries to more than 5000 years old. While these materials retain their overall physical structure due to burial in an anoxic environment they are degraded on the cellular level. Experiments and treatments performed by archaeologists and conservators over the past 50 years have attempted to stabilize these degraded structures and minimize splitting, crumbing, and distortion of the woven structures as they dried. Many of these tests and treatments are published in out-of-print conference proceedings or remain unpublished in conservation lab records. This review of tests and treatments as well as a current condition assessment of several collections brings this information together for the first time and allows conservators and archaeologists specializing in these treatments to see the broader arch of success and failure of the preservation of waterlogged basketry materials. 相似文献
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AbstractThis contribution discusses how embodied heritage values operate within a context of heritage sites, and tangible and intangible embodiments of what is valued as heritage. This is partly intended to re-contextualize ideas of material and materiality that have recently undergone reconsideration in conservation and heritage discourse. The paper questions the claim that ‘Eastern’ and ‘Western’ philosophies of conservation are very different, and that they can be characterized as being concerned with intangible and tangible heritage, respectively. This is based on the assertion that influential preservation doctrines are as much a product of the context and practical situations as they are a product of different philosophies and cultures. Well-known examples from East and West are discussed to highlight the similarities, as opposed to the differences, in approaches. The article goes on to discuss the UNESCO definition of intangible heritage (2003), which conflates the intangible embodiment of values with the intangible values attributable to all heritage. As a way to contextualize this, the article considers embodiment of heritage values as a means to express both intangible and tangible heritage sites (since neither embodiment nor sites have to be physical). This is described by way of a simple, pre-existing communication model that moves from information source (which transmits the message) through the medium (the heritage site or object) to the audience (heritage user). These insights are intended to provide a balanced perspective that accommodates both the site and the embodied values in order to help make and justify conservation decisions. 相似文献
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AbstractThe use of sodium nitrite (NaNO2) as a corrosion inhibitor for wet archeological metal objects presents potential advantages of near neutral pH, low concentration, effectiveness on several metals, and compatibility with organic materials. The effectiveness of NaNO2 as a corrosion inhibitor for storage of chloride-containing marine archeological metal objects from the wreck of the USS Monitor was evaluated using marine-corroded carbon steel analogs. The samples were tested in varying concentrations of NaNO2 and evaluated visually and by monitoring solution chemistry using ion chromatography (IC). It was found that a concentration of 1000 ppm NaNO2, replaced four times, was effective at protecting corroded carbon steel in the presence of chlorides. Nitrite solutions were no more rapid than sodium hydroxide (NaOH) at extracting chlorides from marine steel at equal concentrations and were considerably slower than 2% NaOH. IC analyses indicated that NO2 does not easily oxidize to NO3 under normal conditions, but does so readily when a polarizing current is applied, making nitrites unsuitable for electrolytic reduction treatments. Sodium nitrite does show promise as a storage solution prior to desalination of marine metals or after desalination to prevent flash corrosion during rinsing baths. 相似文献