• Journal of Conservation Science
• /
• v.30 no.4
• /
• pp.383-393
• /
• 2014

It is used for the epoxy resin, a mixture of various fillers conservation of cracks of the stone cultural heritage. Such as conservation treatment is need to for long-term conservation. However, field research and experiments on the conservation treatment results when included 54 cases of talc filler was confirmed that the damage, such as discoloration and cracks. The field research is talc was used to determine whether the reports and conservator interviews conducted, microscopy, ICP analysis of the samples collected from the field site. Experiments is color difference measurement and Ultrasonic measurement were arried out, and artificial weathering tests to investigate the effect of talc. As a result, lower the property of matter of the samples containing the talc. Therefore, we propose that the selection process is not allowed to use talc as the filler of stone powder filler cracks is conservation treatment.

• Journal of Conservation Science
• /
• v.26 no.2
• /
• pp.191-201
• /
• 2010

This study was focused on conservation treatment and restoration of the monument for Jo Heon and the Soldiers in Chilbaeguichong. The monument has been ruined by bombing in the era of Japanese colonial(1940) and restored in 1971. Nevertheless, it still showed serious problems such as loss of original form, structural instability, and unnatural appearance. In order to improve its conservation state, the stele basement which was lost by bombing was restored and combined with body and top stones. The broken part of the top stone was also restored with new material through provenance interpretation.

• Journal of Conservation Science
• /
• v.31 no.3
• /
• pp.215-225
• /
• 2015

"Jocheonillgi", one of the articles left by Jo Heon(1544~1592) whose pen name was Jung-bong, is a travelogue which was written in around 1574~1575 when he was dispatched to Ming as a formal envoy(Giljungkwan). The diary-style manuscript was designated as one of the pieces of the National Treasure 1007. Due to the damage of its binding strings, abrasion, fold, stain, insect and damage on the surface, conservation and restoration was needed. In the process of separation, three more binding strings were found, confirming that the travelogue was rebound at least twice in the past. In addition, the page of 'Yeondoillgi', the original title, was bound inside, confirming that the current cover was revised in the past. As the result of the investigation of base fabric, paper mulberry was found to be the cover, inside paper, lining paper, paper strings. The three kinds of binding string including the current ones was defined to be silk.

• Journal of Conservation Science
• /
• v.36 no.5
• /
• pp.339-350
• /
• 2020

This study attempted to apply a hybrid technology that integrated mineral-based fillers and water-repellent agents to control the efflorescence that results from the use of inorganic binders, for the conservation treatment (surface finishing) of cultural heritage materials made up of stone. Herein, different types of mixing ratios of a filler (silica fume 3.4%) and a water repellent (silane-siloxane 1%) were selected for fabricating the inorganic binder, and it was determined that the ratio selected by weight is effective in controlling efflorescence substances. In addition, it was identified that the inorganic binder with the mixing ratio resulted in a higher compressive strength than the standard (20MPa), and the water permeability resistance was high with low water absorption. The result of ion elution from the bilder showed that a smaller number of ions was observed to affect the efflorescence (directly and indirectly) as compared to that of the control group, which was considered to be relatively stable.

• Korean Journal of Heritage: History & Science
• /
• v.46 no.4
• /
• pp.160-173
• /
• 2013

This research aims to understand the precise character of relics based on literature search and material analysis of the jade excavated from the first buried place of King Jung-jo, and to assess the level of damage through non-destructive diagnosis. Furthermore, scientific conservation treatment was used to restore the original shape of the excavated jade. According to literature search, the excavated jade is known to be jasper, but material analysis showed that it was as a serpentine with the mineral composition of antigorite. Infrared thermography analysis to assess deterioration showed that the internal damage is the result of the interstices developed along the boundary surface of the obtained jade. For conservation treatment of the damaged area on the surface, the jade was filled with a mixture of plaster and glue, and covered with a mixture of acrylic paint and gloss medium for protection, and color was adjusted.

• Journal of Ecology and Environment
• /
• v.38 no.2
• /
• pp.229-239
• /
• 2015

The southwestern islands of Japan, especially southward from Amamioshima Island, have distinguished sets of nature and culture. However, various problems are arising on those islands. This report first introduces island characteristics as well as, their status briefly. Then it introduces conservation efforts. Since nature and culture are closely connected in the island system, conservation of the set of nature and culture is essentially important. From this point of view, this report focuses on two efforts. The first example is the effort for designation of a new national park with a new concept of "environmental culture type" and "ecosystem management type" in the Amami Gunto Islands. This effort is a new challenge to focus on the importance of cultural aspects. The second example is the unique effort of the national park visitor center to conserve as one set of integrated nature and culture with an alliance of all stakeholders in Taketomijima Island, Iriomote-Ishigaki National Park. The visitor center serves not only visitors, but also islanders. These two cases are good models that suggest hints for future conservation measures.

• 보존과학연구
• /
• s.36
• /
• pp.74-85
• /
• 2015

An ox bone object was excavated from the wetland at the excavation site in Bogam-ri tumulus, Naju. It was only able to identify the full image of the shape. Bogam were deteriorated and cracked due to the soil pressure and the repeated cycle of freezing and melting. They were also fragmented in pieces and powdered. In situ, bones were dewatered, consolidated and wrapped together with surrounding soils not to lose the fragmented bone pieces. Unpacking was carried out in the conservation lab and the treatment was processed. Soils on the reverse were removed and then the surface was consolidated and reinforced. Then, soils on the excavated side was cleaned and the surface was consolidated. The object was placed in the produced storing box. When the ox bone object was excavated, it did not have its head and was in the shape of tieing all its legs up. This shows that the animal had been tied up during a ritual and then buried. During the treatment, the importance of the burial purpose and maintaining the shape at the time of excavation was considered. Therefore, the shape of the object at the time of excavation was maintained rather than dismantling all these fragile bones and finding the shape of an ox. This conservation of ox bone object shows that conservation treatment methods have to be vary depending on characters and conditions of objects. In addition, it is expecting that this writing could be the reference to bone and horn objects excavated in the future for the whole process from the excavation to the conservation treatment.

• Journal of Conservation Science
• /
• v.30 no.4
• /
• pp.447-456
• /
• 2014

This study is mainly about materials that are used in Sungnyemun gate's dancheong to find causes of dancheong's damage such as desquamation and peeling off. 12 kinds of pigments' components which are used in dancheoong are analyzed. Except for Hobun and Seokganju, the pigments are artificial. Samples are made with different conditions of adhesives and the rate of binder. To estimate promotion weathering test, adhesives are applied in a different order. Desquamation and peeling off presented especially when different adhesives are used on dancheong and also, generally the layer thickened.

• Journal of the Korean Solar Energy Society
• /
• v.37 no.1
• /
• pp.71-80
• /
• 2017

A Data center houses a large number of server computers, storage and etc in racks. With the rapid increase of heat generation rates per rack in a data center, energy consumption rates for cooling have been increased year by year. In this study, energy conservation effects of a MOA (multi-stage outdoor air enabled) cooling system in a data center has been investigated when it is applied to 5 different locations, Korea. As results, Energy conservation effects of the MOA cooling system was achieved at about 20% to 30%. Humidifier operation time was 40 to 55 days when supply air temperature was maintained at 13, and humidity condition was kept within the allowed range even though humidifier was off. Furthermore, humidification was not needed when supply air temperature was maintained at $25^{\circ}C$. In selected 5 locations in Korea, the difference of regional climatic conditions affected no more than 5% in cooling energy consumption rates.

• Journal of Environmental Science International
• /
• v.22 no.6
• /
• pp.717-721
• /
• 2013

In order to analyze the effect of environmental protection on wind energy dissemination quantitatively, the onshore wind resource potential is estimated using Environmental Conservation Value Assessment Map and Korea Wind Resource Map. The onshore wind resource potential of 11 GW is calculated if wind farm development is prohibited within Class 1 area of Environmental Conservation Value Assessment plus 500 m buffer area. Therefore it is worried that environmental protection would be a practical barrier of accomplishing 4,155 thousand TOE target of wind energy dissemination until 2030.