共查询到20条相似文献，搜索用时 15 毫秒
1.
《文物保护研究》2013,58(1):34-44
AbstractSulphuration is the main destroyer of marble, producing imaginary (not true) patina. Other reasons for the discoloration of marbles are discussed. Magnesium silicate saturated with de-ionized water is a safe and simple cleaner. Sintolite is advocated as an adhesive for marble rather than the general more fluid epoxy resins. Solid polyvinyl acetate is strongly advocated as the basis for sma1l repairs to internaIly housed marble. The consolidation of marble is discussed and a method for internal exhibits recommended. Conservation of unbaked clay is touched upon, and a method for the repair of terracotta suggested together with a process for the reproduction of a glazed frieze using a latex mould and epoxy-reinforced plaster casts. A few remarks are made concerning the dangers of cleaning alabaster with water. The commentary is of a general nature and is not intended as a strict blueprint for any particular object. 相似文献
2.
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
3.
Mathilde Tiennot Jean-Didier Mertz Ann Bourgès Anne Liégey Atika Chemmi Anne Bouquillon 《文物保护研究》2020,65(5):285-295
ABSTRACT Preservation of cuneiform tablets made with clay minerals is an ongoing conservation issue. A treatment based on TEOS consolidation has been used since 1996 at the Louvre museum. The characterization of the tablets pointed out kaolinite, illite, and smectite as the three main clay minerals constituting the objects. In this research, the physico-mechanical aspects of the treatment are investigated. The penetration depth of the TEOS solution and the gradient induced are quantified using laboratory samples. TEOS treatment preserves the macroscopic swelling and the vapour transfer properties, but modifies the clay’s affinity to moisture. Elastic properties are gradually improved for all clays, but only kaolinite’s strength increases significantly. The impact of TEOS treatment on the natural behaviour related to the respective structure of the clays is considered, and the amount of kaolinite required to create adequate reactions appears to be of interest for conservation treatments. 相似文献
4.
《文物保护研究》2013,58(4):177-182
AbstractA moulding of the Sutton Hoo ship impression was taken, so that a complete record could be preserved after the final excavations which would necessitate destroying the impression. Plaster of Paris was used as a moulding medium. Experiments were made with consolidants and release agents. Wet paper towelling was used as a barrier between sand and plaster, clay protected the iron rivets. Work began in the burial chamber and progressed to stern and bow. Pieces were made approximately 66 cm square and butted up to each other. Ribs of the boat were moulded separately in 7 or 9 pieces. There were 85 pieces moulded altogether. 相似文献
5.
《文物保护研究》2013,58(4):198-201
AbstractAn improved technique for the accurate reassembly of large plaster piece-moulds made in the field is described. The proposed method relies on the construction, within the main mould, of supporting detachable plaster arches which are accurately surveyed and planned in situ and subsequently easily reassembled prior to the making of the final cast. 相似文献
6.
《The Reference Librarian》2013,54(78):5-24
Summary As with beauty and other concepts, librarians have been viewed in many subjective ways. On the other hand, some attempts have also been made to obtain more objective views of librarians. This paper provides a summary of these views, or images, that extend back to the early 18th century. It presents the many traits that comprise these images, the sources or origins of the images, the various groups that hold the images, and ends with a reason why current images are indefinite and “blurry.” 相似文献
7.
AbstractIt was decided to make a replica from the plaster mould of the Sutton Hoo ship impression using polyester resin reinforced with glass fibre matting and paper rope. For easy storage and transportation the replica was cast in twenty-five sections which could be bolted together. The problem of supporting these and preventing them from sagging or twisting out of shape was solved by using eighty accurately measured leg attachments fixed to the underside of the cast. 相似文献
8.
《Legal Reference Services Quarterly》2013,32(3):43-63
Abstract Taking as her starting point the ideas presented at a recent conference on cooperative collection development, Ms. Hinchcliff discusses their applicability to the academic law library world. The issues under scrutiny are some of those most under consideration today, topics like new initiatives in scholarly publishing, cooperative purchasing of electronic resources, and preservation. Many of these ideas are examined in light of recent proposals made by the American Association of Law Libraries. 相似文献
9.
Sisalee M. Hecht 《Medical reference services quarterly》2013,32(3):332-333
ABSTRACTThere is limited literature on hospital archives projects. Hospitals understandably have a strong focus on patient care, but there is still a critical need to keep institutional archives. Among their many uses, institutional archives preserve corporate memory, provide evidence of interactions with community, and assist in contemporary decision making. This column describes a university-hospital partnership to undertake a one-year project to preserve, detail, and digitize ten boxes, or approximately 3.8 meters, of materials dating from 1980 to 2006. This project serves as a model for other hospital or health care facilities wanting to preserve and more actively engage with their archival collections. 相似文献
10.
AbstractParchment is produced by processing the dermal layer of animal hide through limited mechanical and chemical treatment and then drying it under tension. The weak condition of many historical objects made of this material is caused by chemical, biological and mechanical degradation. Repairing these objects by filling gaps with parchment or paper patches may be inadvisable, due to important differences in intrinsic strength, which can create tensions between old and new materials. Alternative filling methods may be used, consisting of the application of solid materials in the form of a powder or a suspension, used to create a solid sheet of reconstituted parchment. The solids may consist of any kind of collagenous material (powdered parchment or hide, gelatin), paper or a combination of the two. Published methods describe preliminary treatments (e.g.relaxation), application media (water, solvents, additives), use of additional consolidating membranes (Japanese paper, goldbeater's skin), use of adhesives for pasting and surface consolidation purposes, preparation of mechanically isotropic templates for infills and tinting with synthetic dyes. A comparative investigation of methods confirms that the mechanical properties achieved in these infills, such as tensile strength and elasticity, as well as their reproducibility, are acceptable for application in conservation practice. 相似文献
11.
《文物保护研究》2013,58(1):8-17
AbstractAbsorbent materials such as wood, paper and cotton stabilize the atmosphere of show-cases against the relative humidity changes caused by temperature variation and by exchange of air with the surroundings.There are several exchange processes between the air in the case and the outside air: diffusion through porous COllstruction materials, air flow caused by temperature and pressure changes and airflow by convection in a show-case whose relative humidity differsfrom that of its environment. The air changes about once a day in show-cases made by conventional joinery techniques. The rate of exchange can be reduced to less than five volumes a year by sealing a show-case so that only one small hole is left for pressure equalization. A dust and sulphur dioxide filter can then be fitted to maintain a pure atmosphere within.In heated rooms without air-conditioning the RH may fall dangerously low in winter. A static method of RH control for a show-case is described. This is a saturated solution of sodium bromide covered by a silicone rubber membrane. 相似文献
12.
ABSTRACTComputer algorithms, the logic and code that power automated decision-making programs, increasingly dominate many aspects of modern society. There are already many examples of institutional biases – including ideological bias, racism, sexism, ableism – being solidified in algorithms, causing harm to already underprivileged populations. This article explores library-specific and society-wide examples as well as efforts to prevent the implementation of these biases in the future. 相似文献
13.
《Slavic & East European Information Resources》2013,14(1):17-23
ABSTRACT The Slovak library sector has been in general decline since 1991, due to woefully inadequate funding. There are some bright spots, however. Central scientific and academic libraries have fared better than public libraries. Slovak librarians have realized the benefit of collective action for the good of the profession. The work of the Slovak Library Association over the past ten years has been fundamental to advances made. Slovak librarians have also been cooperating with foreign organizations and associations, with many positive results. 相似文献
14.
《The Reference Librarian》2013,54(65):161-176
Summary The awareness of Web sources in reference service has risen in recent years as many reference librarians have become more Internet-minded. During the reference process, we often ask ourselves: can this question be answered by using the Web? The use of Web sources is expanding the amount of available reference information, enhancing individual libraries' collections, and, hence, providing better user service. There are many benefits in using the Web sources in reference service. There are also some drawbacks. Some useful Web sources are reviewed. The Web, when used properly, provides reference librarians with a valuable resource option to help improve their services in an effective manner. 相似文献
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16.
Alice Donaldson 《Communication Studies》2013,64(1):60-62
The Doctor of Arts and extern‐internship program in Speech Communication is a viable alternative to the present Ph.D. program particularly in light of the existing job market. This article explores many of the advantages and considerations surrounding such a program. 相似文献
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18.
《Journal Of Archival Organization》2013,11(3):57-73
ABSTRACT The records of art conservators are important for many reasons. As people consider artwork a legacy of American culture so too will they also consider the records generated by individuals who have spent their working lives guaranteeing its long-term survival. Conservators and archival repositories need to work together to ensure that records relating to the treatment of art objects in their many forms be retained and made available to researchers generations from now. Some conservators and institutions have already begun to work together, most notably the conservators who have donated their papers to the Winterthur Museum. The American Institute for Conservation of Historic and Artistic Works and The Getty Conservation Institute organized a two-day roundtable discussion in May 2003, bringing conservators and archivists together to discuss the next steps in archiving the records of art conservators. 相似文献
19.
《文物保护研究》2013,58(4):304-315
AbstractA polychromed sculpture was restored and examined. The shrine is made from pine-wood and the sculpture from oak. The ground consists of chalk and animal glue; the pigments are: azurite, a green copper pigment, yellow organic colouring material, orpiment, red lead, vermilion, red organic colouring material, iron oxide red, lead white and charred matter (charcoal ?). Metals used are gold and silver. The medium is on a drying-oil base to which a protein-containing material is added. Generally, the colours were built up in two layers. There is an extensive use of imitation gold, while the use of gold foil is limited to the areas of hair and the flowers on the garments.In general, the wood in all parts of the object was in good condition and no general impregnation was needed. Cracks in the shrine were filled in with wood or rejoined. The sculpture, which was split in two, was glued together. The condition of the polychromy was relatively good, and only local treatment was required. 相似文献
20.
Douglas M. McLeod 《广播与电子媒介杂志》2013,57(1):4-19
Past research raises concern that media coverage may unfairly bias the audience against social protesters by portraying them as deviant. Furthermore, negative treatment of protest groups may discourage protest as a form of democratic participation. To examine whether such concerns are indeed warranted, an experiment was conducted exposing 266 subjects to one of two television news stories about the same protest. Results indicate that subtle differences in the news stories led to significant differences in subjects’ perceptions of the protesters and police, but no differences in perceptions of the utility of social protest in general. 相似文献