• 한국문화재보존과학회:학술대회논문집
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• 2005.11a
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• pp.47-52
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• 2005

• 한국문화재보존과학회:학술대회논문집
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• 2005.11a
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• pp.37-40
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• 2005

• Journal of Conservation Science
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• v.35 no.3
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• pp.245-251
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• 2019

In this paper, conservation treatment processes for the wooden furniture in the Presidential Archives are introduced. Conservation treatment strategies for modern wooden cultural heritage have been increasingly studied. The current study uses materials similar to those used by the existing conservation treatment method. Material analysis showed that the chair(Lee136-2) and desk(Yun37) in the Presidential Archives are made of Dipterocarpaceae, and both are coated with two layers of varnishing. FT-IR analysis showed that the varnish has a similar spectrum to that of a nitrocellulose-based lacquer(Lee136-2) and top coat(Yun37) and confirmed that a synthetic material was used. Pollutants had adhered to the surface of the wooden furniture and it was also in structurally unstable condition because of cracks and damage to the varnish and wood. Therefore, a conservation treatment was carried out to restore the damaged areas to their original appearance using similar kinds of materials, based on data obtained by materials analysis.

• Conservation Science in Museum
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• v.4
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• pp.79-88
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• 2003

The lacquer ware objects of Nangnang were treated for conservation and seven of them were studied on the manufacturing technic. When we examined them using microscopes and an SEM-EDS analysis, the lacquer layer was proved to consist of two parts: the ground and the upper lacquer. The ground coating was made of several mixed materials such as powdered bone and minerals. Many forms of powdered bone were observed. We could find out that HgS, PbO and AgS were used as pigments. We could also find out a specific process and materials were used for those objects, although we could not say definitely what they were because the number of the sample was not big enough.

• Conservation Science in Museum
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• v.28
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• pp.1-16
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• 2022

Treatment was performed to conserve the Underwood Typewriter (Hangi 6863) from the collection of the National Hangeul Museum. Since the typewriter was presumably manufactured in the modern or contemporary era and bore patterns of damage such as component loss, corrosion, and paint loss, as well as being made of multiple materials, a condition survey and a scientific analysis were conducted ahead of the conservation treatment in order to carry out appropriate treatments for each material. The analysis confirmed that the typewriter was made of various materials including metal, paint, and rubber, and the conservation treatment was performed in the sequence of removal of contamination, reinforcement, and restoration under conditions where each material was stable. Conservation treatment was completed in a stable state by strengthening the layer of damaged paint and restoring the lost leg. These processes have enabled a better understanding of the materials and characteristics of typewriters manufactured in the early modern era, which is expected to provide basic data for typewriter conservation research to be conducted in the future.

• Journal of Conservation Science
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• v.37 no.2
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• pp.101-119
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• 2021

Korea's National Treasure No. 229, the Jagyeongnu (clepsydra) of Changgyeonggung Palace, is a scientific and cultural property representing the pinnacle of science and technology in the Joseon Dynasty. Currently, only the large, mid-sie, and small Pasuhos (bronze jars) remain. During a nearly two-year conservation project by the Cultural Heritage Conservation Science Center (CHCSC) that began in 2018, conservators identified the contaminants on the surface of the water clock's components. It turned out that the contaminants had been caused by the exposure of squalane and silicone oil, used in an earlier preservation treatment, to the elements. The CHCSC conducted experiments to determine the most effective method to remove the contaminants. First, the conservators tried using an organic solvent, a poultice, and the application of toluene and bentonite, which yielded excellent reactivity and significant color difference changes (𝚫E). However, the reactivity was insufficiently effective to warrant the health hazards to the conservators and the environment (toluene is toxic). Although organic solvents required considerably more effort, time, and human resources, the conservators confirmed that their use achieved a true color difference variation (𝚫E) that was within the same range as the toxic hydrocarbon. Thus, they confirmed that using an organic surfactant was the best method for removing the contaminants.

• Journal of The Korean Association For Science Education
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• v.24 no.3
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• pp.417-428
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• 2004

Conservation reasoning makes operational thought possible as a functional tool and it is the essential concept not only in the area of science and mathematics but also in several aspects of daily life. The abilities to solve mathematical problems and that of scientific reasoning and abstract way of thinking depend on whether thereis conservation reasoning or not and they are critical concepts that enables us to confirm the steps of cognitive development. Therefor in the study, we emphasized the issue that is the ways to speed up the scientific era by analyzing the correlation between the formation of conservation reasoning and neuro-cognitive variables. About 50% of 1-3 grade students did not had conservation reasoning skills. The formation of conservations was not linear. Scientific reasoning ability, planing and inhibiting ability were significantly different in levels of conservation, And, conservation reasonings were significantly correlated with cognitive variables. Scientific reasoning and planning ability significantly explained about 20% of the conservation reasoning ability of 1-3 grades.

• 보존과학연구
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• s.18
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• pp.22-41
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• 1997

• 보존과학연구
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• s.10
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• pp.115-136
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• 1989

• The Science & Technology
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• s.501
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• pp.87-89
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• 2011