• Journal of Conservation Science
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• v.25 no.3
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• pp.317-322
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• 2009

Nicobium castaneum belonging to the family Anobiidae of Coleoptera was found in Jeju Folk Museum in 2006, Miribeol Folk Museum in 2007, and a bier preserved in the bier house of Jeju in 2008. We found that this species did considerable damage to the several wooden cultural properties. For Identification and pest management to conserve wooden cultural properties from this anobiid species, we report morphology of adult and damage pattern (shape of exit holes from the host, tunnels and their excrements etc).

• Journal of Conservation Science
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• v.31 no.1
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• pp.13-20
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• 2015

Surface of the wooden cultural heritage has been protected from moisture by natural oils (such as perilla oil and tung oil), which accelerated degradation. But we can find seldom the research on the processes and performances of oil coatings. In this study, the water resistant performances by wood direction were compared to 3 types of natural oil and 2 types of oil stain, and the effect of additional indoor conditioning and temperature of oil were appraised in longitudinal direction. The natural oils block moisture about 79.2% comparing to the control in longitudinal direction. Especially the tung oil showed the outstanding water resistance about 90.5%. The water resistant performances decreased about 8.8% by additional indoor conditioning for 2 years. Heated oil improved the water resistance about average 5.0%.(Max. 9.6% with linseed oil).

• Korean Journal of Heritage: History & Science
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• v.47 no.4
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• pp.58-73
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• 2014

In general, it is thought discoloration on wood is frequently found in decorative wood products. So this study was conducted focusing on white rot found lower parts of columns and baseboards of a wooden house, Hyunchungsa (shrine) to know whether microorganisms have any influence on discoloration or there is correlation with strength by investigating resistograph, occurrence of microorganisms and microscopy for analysis(SEM, tissue analysis etc.). The results obtained were as follows: (1) The result of measurement of resistograph showed there are little correlation between discoloration and strength though there was a spot indicating low resistance. (2) The moisture content of discolored part was relatively higher than that of normal parts, but occurrence of microorganisms was less in discolored parts while more kinds of microorganisms were identified in normal parts with high CFU(Colony Forming Unit). (3) The result of SEM (with a magnification of 500 times) on the surface of discolored parts, it was found out there are many kinds of particles in different sizes on the surface and those were composed of elements such as C, O, Si, Ca, and a small amount of Na and Cl (weight %) were detected in part. (4) The result of tissue analysis showed discoloration occurs limitedly to the outer surface of column. As these results, it is concluded that discoloration has nothing to do with strength, damage by microorganisms and salt.

• Korean Journal of Heritage: History & Science
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• v.54 no.2
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• pp.194-215
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• 2021

Termites are important decomposers in the ecosystem. They are also economically significant structural pests. In this study, we reviewed the developments of termite control and recent research on termite management to provide information on the prevention and control of termites. In Korea, most of the damage to wooden historical buildings is caused by subterranean termites. Reticulitermes speratus kyushuensis is the main species, which is widely found throughout the country. In the early 1900s, inorganic insecticides, such as arsenic dust, were used for termite control. After the synthesis of chlorinated hydrocarbon pesticide in the 1940s, it was widely utilized and demonstrated high termite control efficacy. However, chlorinated hydrocarbon insecticides were later banned, disappearing from markets after reports emerged concerning environmental contamination and toxicity to humans. Therefore, the termite control industry sought a new termiticide; hence many pesticides were utilized for termite control. Organophosphate (1960s), carbamate (1970s), pyrethroid, and insect growth inhibitor (1980s) were newly synthesized and adopted. In the 1990s, the first commercial baits using chitin synthesis inhibitors (CSI) were developed, providing a means to eliminate an entire colony of subterranean termites around a structure. Many studies have been carried out on soil termiticides (liquid termiticides) and CSI baits to increase their efficacy, and different baits such as aboveground bait stations, fluid bait, and high-durability bait were also developed in the 2000s. In addition, the paradigm of termite control has shifted from localized treatments using soil termiticides to area-wide pest management using CSI baits to create termite-free zones and protect buildings over time. Termite infestations in wooden historical buildings in Korea have been reported since 1980, and considerable attention was drawn in the 1990s when several UNESCO world heritages such as the Jongmyo Shrine and the Janggyeong Panjeon Depositories of Haeinsa Temple were infested by subterranean termites. Since then, a survey of termite infestation in wooden architectural heritage has been conducted, and the National Research Institute of Cultural Heritage and Heritage Care Program regularly monitors those properties. Finally, we suggest termite management using primarily CSI baits, selective application of various soil treatments applied to the object, foundation soil treatment, research and development of durable termite baits, application of area-wide programs for wooden-building complexes, application of integrated termite management (ITM), and regular education for owners and managers to prevent and reduce termite damage.

• Journal of the Korean Wood Science and Technology
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• v.50 no.2
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• pp.81-92
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• 2022

To analyze the relationship between climatic factors (mean monthly temperature and total precipitation) and tree-ring growths of Pinus densiflora S. et Z. from National Parks (according to region) of the Korea, 20 trees were sampled from 13 National Parks. Only trees that were successfully cross-dated were used for dendrochronological analysis, and at least 11 trees were included. The tree-ring chronology of Mt. Bukhan (covering the shortest period of 1917 - 2016 [100 years]) was assessed, as well as that of Mt. Seorak (covering the longest period of 1687 - 2017 [331 years]). After cross-dating, each ring width series was double-standardized by first fitting a logarithmic curve and then a 50-year cubic spline. The relationships between climate and tree-ring growth were calculated with response function analysis. The results show a significant positive correlation between a given year's February-March temperature, May precipitation levels, and tree-ring growth. It indicates that a higher temperature in early spring and precipitation before cambium activity are important for radial growths of Pinus densiflora in the Korea.

• Journal of Conservation Science
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• v.26 no.3
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• pp.247-258
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• 2010

We conducted optical microscopy, infra-red spectroscopy and SEM-EDS analysis of the lacquer layers on the wooden coffins excavated from King Muryeong's Tomb. We found four varnishing methods according to the sub-materials of lacquer layers: The lacquer of wooden coffins with black paint layer on the surface were classified with two groups; single layer and three layers. The lacquer of wooden coffins without black paint layer on the surface were classified with two groups; single layer and two layers. IR spectra of the laquer were same as those of the oriental laquer. The SEM-EDS analysis showed that the lacquer layers were mixed with iron, copper and calcium.

• 보존과학연구
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• s.25
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• pp.155-170
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• 2004

Jonam mountain is located in Gung nam Hamangun gayaeup, and it is 139.4m above sea. Most of Haman area consists of hill and mountains and Pinus densiflora Sieb. et Zucc,Quercus acutissima Carruth, Quercus variabilis Bl, Quercus mongolica Fisch and Robiniapseudoacacia L are distributed. Sungsan mountain fortress wall is designated as a national historical spot 67th and our laboratory excavated and surveyed Sungsan mountain fortress wall from 1991 to 1994.Especially, we confirmed mud layer in 1992 and excavated wooden remains such as wooden strip with inscription and so on. Also, wooden strip with inscription and the wooden remains of the type which is various such as brush, knife, various club, vessel, awl were excavated in 2002.After classifying remains on the spot, they were washed. We found three pieces of wooden strip during washing, and three pieces of wooden strip during conservation processing. Also, we confirmed others. Until now, we have processed 8000 wooden remains, and we are processing about 1500wooden remains.

• Proceedings of the Safety Management and Science Conference
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• 2013.04a
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• pp.485-500
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• 2013

Cultural assets of the country's history and cherish the living conditions of the people, conscious and cohesive crystals, and the pride of the hearts of the people as a haven. In the country worth preserving national treasure, bomulgeup, local cultural heritage as a major cultural property protection are. Cultural properties, etc. Most are wooden, is vulnerable to fire, and, moreover battling to far away from the city and due to the geographical conditions are very challenging aspects. The national cultural assets, such as the many temples, vows to fire one if the loss of a centuries-old cultural property is a big loss of national posterity to great shame is not. Still cultural assets and a large number of visitors have flocked temples. All of us to keep the look and feel of the cultural assets pleasure to conserve cultural assets preserved to ensure that fire prevention is always unmistakably bear in mind that sees.

• Journal of the Korean Society of Industry Convergence
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• v.26 no.4_2
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• pp.697-703
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• 2023

Intertidal zones, akin to tidal flats, are among the potential areas where underwater cultural heritage might be submerged. However, the shallow depths in these regions present challenges for conventional vessel-based survey methods. Moreover, during low tides, intertidal zones transform into tidal flats, limiting the efficiency of survey efforts due to restricted access and potential risks. As a result, proper underwater cultural heritage surveys encounter difficulties in these environments. In recent times, extensive research is underway to address these issues by investigating underwater cultural heritage surveys in intertidal zones, encompassing diverse fields, including equipment-based investigations. This study aimed to explore the feasibility of utilizing unmanned aerial vehicles (UAVs) to conduct intertidal cultural heritage surveys, employing aerial photography and 3D mapping to create detailed orthoimages and 3D models. The study focused on assessing the potential application of these techniques for cultural heritage surveying within intertidal zones. Notably, the survey conducted in Jindo's Naesan-ri demonstrated high-resolution capabilities, enabling the distinction of actual pottery fragments mixed within gravel fields. Similarly, in the survey of Jindo's Byeokpa-hang, it was found that a wooden pillar structure existed in a section about 200m long. The integration of various sensors, including LiDAR, with UAVs allows for diverse investigation possibilities, including bathymetric measurements, and is expected to facilitate the acquisition of varied datasets for further research and assessment.

• Journal of Korea Multimedia Society
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• v.13 no.2
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• pp.332-340
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• 2010

This paper presents the digitally implementable methods to preserve and restore the traditional wooden buildings, which are the typical "Korean Cultural Contents," by using computer and multimedia technologies. We first define the meaning of the digital implementation of Korean traditional wooden buildings and important points to be considered. In addition, we present the steps and methods for implementation. Furthermore, we considered wooden materials, structures and Danchung (patterns of paintings on the wooden pieces) in implementing of Gongpo (wooden structure system) for both Geunjeongjeon of Gyeongbok Palace and Injungjeon of Changduk Palace by using the presented methods. We present the mechanical method to digitally implement wooden buildings by using numerical ratios of Gongpo. The other advantage of this paper over the other studies, which focus on implementation of exterior of wooden buildings, is presenting the methods how to show the complicated relations of inner parts in Korea wooden buildings. Thus, it can be practically used in preserving and restoring Korean traditional wooden buildings.