• Korean Journal of Heritage: History & Science
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• v.44 no.4
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• pp.142-153
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• 2011

'Silla Monument Stone in Jungseong-ri, Pohang' was discovered in Pohang City, Gyeongsangbuk Province of Korea in 2009. The monument stone with irregular shape has dimensions of maximum height of 105cm, width of 47.6~49.6cm, thickness of 13.8~14.7cm and weight of 115kg. The results of monument stone was found to be granitite. Conservation treatment procedure was carried out in the order of production of Weathering map, cleaning of surface pollutants, consolidation using ethyl silicate. Black pollutant(crust) that covered more than 60% of the surface was analyzed first in order to remove the pollutants on the surface of the monumental stone by cleaning of surface pollutants using laser. The purpose on analysis was not only to verify the pollutants on the stone but also to carry out preliminary cleaning by securing rocks with same pollutant as the monumental stone. As the results of analysis using p-XRF(PMI. INNOV-X, USA) on the site, high level of Mn and Fe were detected, and the analysis of small section that had been fallen off with SEM/EDX for the purpose of quantitative analysis also detected high level of Mn. The Similar contaminants on Stone secured in the manner described above were made into 10 samples ($5cm{\times}5cm$) and was subjected to preliminary cleaning by Nd-YAG Laser(Laser&Physics, Korea). The results of surface observation through portable microscope during cleaning revealed that the power of 460mJ, wavelength of 1064nm and irradiation frequency of 1,800~2,300 per $25cm^2$ were most effective. Evaluation on the preservative treatment was made through confirmation of the extent of removal through color-difference meter measurement and component analysis prior to and following removal of the pollutants. As the result of color-difference meter measurement increase in the brightness was evidenced by the increase in the brightness ($L^*$)value from 33 to 49, and it was possible to ascertain the reduction in the pollutants as the content of Mn was reduced by about 80% from $50,000{\pm}5,000ppm$ to $10,000{\pm}2,000pmm$ from the result of component analysis.

• Proceedings of the Korean Society of Agricultural Engineers Conference
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• 2002.10a
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• pp.141-144
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• 2002

A layout planning of the rural village must consider regional, environmental and historical background, at the view of future-oriental. The study is Ryongsan-chon, that common the Korean rural village in China. It has a good environment for agriculture but lacking facilities for life. The layout plans that consider the characteristic of in-China, and Korean made out.

• Proceedings of the Korean Society of Agricultural Engineers Conference
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• 2002.10a
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• pp.209-212
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• 2002

The construction method of a dirt-walled house is studied in order to develop eco-friendly store house. A dirt-walled house is constructed based on wall frame(Korean traditional style). The main material is soil (mud).

• Magazine of the Korean Society of Agricultural Engineers
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• v.45 no.5
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• pp.126-132
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• 2003

The insulation characteristics of earthen core wall were studied in this paper. The overall heat transfer coefficients(U) were obtained through experiment in accordance with Korea Industrial standards. The result of the experiment are compared with the Regional Overall Heat Transfer Coefficient(U) of Building. This results inform that core wall with soil can be used as building walls because the insulation characteristics agree to the rule of building standards.

• YAKHAK HOEJI
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• v.59 no.1
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• pp.12-16
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• 2015

Several 8-cycloalkoxychrysin analogs were synthesized from 6-benzyloxy-5,8-dihydroxyflavone and cycloalkanols in 2 steps and we evaluated their inhibitory activities against NO production from LPS-induced RAW 264.7 cells. Among tested analogs, two analogs with cyclopentyl substructure (796 and 798) showed strong inhibitory activity against NO production.

• Proceedings of the Korean Society of Agricultural Engineers Conference
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• 2003.10a
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• pp.343-346
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• 2003

A heating greenhouse early in Joseon Dynasty was restored to the estimated state by the document "sangayorok(1940)" Diagrams of a restored greenhouse was reported. This heating greenhouse is eldest in the world. Growing vegetables in a restored greenhouse the inner temperature and humidity was investigated. This greenhouse was identified as making grow possible.

• Proceedings of the Korean Society of Agricultural Engineers Conference
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• 2003.10a
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• pp.331-334
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• 2003

The objective of this study is to present suitable an ecological backhouse in the rural area. In order to design an ecological backhouse we investigated the backhouse in actual rural village, classfication by type, scale and condition etc. Finally, we made an ecological backhouse's model for rural area.

• Monthly Korean Chicken
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• v.5 no.3 s.45
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• pp.2-6
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• 1999

가축수송차량 소득실시 감독 강화 - 위생 ${\cdot}$ 방연관리우수종계장인증요령 개정 고시 - 농림부, 비리신고 인터넷으로 접수 - 경제적인 계사 면적과 사육밀도 - USDA, 육류에 대한 방사선 조사규칙안 발표 - 농림부, 99년 축산발전기금 운용 계획 - 99년 EU 가금산업 전망 불투명 - 방콕, 양계 ${\cdot}$ 양돈 ${\cdot}$ 자재박람회 개최 - 가축방역사업예산 2백41억여원으로 - 미, 러시아에 닭고기 5만톤 추가 원조 발표 - 99년 세계 육류시장 전망 - 일본, 닭고기 대부분 중국에서 수입 - 닭고기 부분육 소비 비율 높아져 - 닭고기 가공품 올해 $47{\%}$ 성장 목표

• Proceedings of the Korean Society of Agricultural Engineers Conference
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• 2005.10a
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• pp.461-466
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• 2005

The purpose of this study is to classify rural villages through the amenity investigation by a village unit. PCA(Principal component analysis) is used for the classification of rural villages. The principal components of rural villages are deduced scale, population, infrastructure, traffic, education welfare and sightseeing by PCA.

• Proceedings of the Korean Society of Agricultural Engineers Conference
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• 2000.10a
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• pp.431-437
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• 2000

The aim of the work described in this paper is to develope a pavement method for farm road. To this ends, a series of material test are conducted on in-situ soil which was mixed additives-coarse aggregate, polypropylene fiber, excellent soil compound etc. With the laboratory test results, in-situ pavement test was conducted during two years. The serious problem of the pavement is not appeared up to this time. And the measurement of field data is continued presently. The majority merits of this pavement method is low cost and using environmental materials.