• 한국문화재보존과학회:학술대회논문집
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• 2003.03a
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• pp.19-19
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• 2003

• Journal of the Korean Geophysical Society
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• v.5 no.3
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• pp.199-209
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• 2002

We have carried out a nondestructive close examination for the purpose of the structural safety diagnosis of the Dabo Pagoda of Bulkuk temple located in Kyungju, Kyungbuk Korea. For estimating the mechanical properties of each rock block of the pagoda, ultrasonic measurements were conducted at 641 points of 255 blocks. The P-wave velocity ranges from 584m/sec through 5,169m/sec, and averages 2,901m/sec Based on this result, the uniaxial compressive strength was estimated to be $93{\sim}1,943kg/cm^2\;with\;396kg/cm^2$ of average, and the index of weathering is $0.07{\sim}0.88$ with 0.43 of average, which means the moderate degree of weathering. The comparison of the rock strength of each block with the overburden acting on the block reveals that the rock blocks related to the structure of the pagoda are relatively sound for uniform stress, but it is highly possible for a concentrated stress to lead to a partial failure. We suggest a monitoring of cracks due to the concentrated stress. The parapets of 1st and 2nd floors composed of small rock pieces are severely weathered. However, this is not directly related to the structural safety of the pagoda.

• Journal of the Korean Institute of Landscape Architecture
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• v.19 no.1
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• pp.81-97
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• 1991

The purpose of this study is to present the archetype and archetypal forms of traditional Korean landscape patterns through investigating the landscape symbolism of the Bulguk-Sa. This study was performed mainly by both the review of written materials and case study through field surveys. My findings are as follows. Firstly, The decision of Bulguk-Sa site was greatly influenced by the religious backgrounds, the system of contemporary social values and thought at that time. Secondly, The landscape symbolism of the spatial structure based on the form of Mandala and Sumisan, which are parts of Buddhism. Finally, Among the many landscape composing elements, Sukga-Tap, Dabo-Tap, Gupumyoun-Gi and Bumyoung-Ru apparently reveal the symbolic meaning of Buddhism.

• Proceedings of the Korean Society of Plant Pathology Conference
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• 2003.10a
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• pp.107.1-107
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• 2003

The fermentation process and subsequent processing determine the efficacy of a bioherbicide propagule. Large batches of biomass of the mycoherbicide agent for white clover, Sclerotium sp.(BWC98-105) was produced in simple liquid fermentator in 5 gallons vessels(Model No. 8087, Dabo Inc., Korea) with oxygen supply(DPH16000, FineTech Inc., Korea) simulating industrial conditions by utilizing commercially available, inexpensive ingredients (10 ％ rice bran), The maximum biomass yield of Sclerotium sp.(BWC98-105) was obtained after 5 days of air pumped incubation at room temperature condition(22-28$^{\circ}C$). By using this simple facility, it could get fragmented or proliferated greatly and attained maximum mycelia biomass. The biomass of mycoherbicide agent consisted of hyphae devoid of spores. Biomass mycelia of the fungus 99％ survival at room temperature after 2 me. A thorough understanding of the effects of fermentation and formulation on viability and virulence is required to guide these processes. After an economical yield level of bioherbicide propagule has been achieved in a fermentation process, formulation becomes a critical factor which influences product efficacy. Because the fermentation must be stopped at a point when virulence/viability are optimum, the live bioherbicide propagule must be stabilized, formulated, and packaged.

• Journal of Physiology & Pathology in Korean Medicine
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• v.16 no.3
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• pp.567-571
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• 2002

In order to prove the sedative, anticonvulsive effects of Incenses and to identify the effect of this medicine to cerebral glutamic acid and GABA density in experimental animal. we used Incense which was made of traditional herb medicines. We also examined what kind of material is to be involved in biosynthesis of these elements. In addition we experimented to find out synthesis of active GABA-T. Incenses were inhaled 8 hours a day for 4 weeks to mice. Finally we have following results. On the convulsion induced by pentylenetetrazole(PTZ), Incenses showed significant anticonvulsive effect. Density of glutamic acid in brain was significantly decreased. On the contrary, density of GABA was significantly increased. The Activity of GABA- T in brain was significantly reduced. The quantity of lipid peroxide in the brain was significantly decreased. Activity of xanthine oxidase and aldehyde oxidase were significantly reduced in brain. From the above results, we confirmed that Incenses decreased the density of glutamic acid, increased GABA density and decreased the activity of GABA- T in brain. For the convulsion which was induced by PTZ, Incenses showed significant anticonvulsive effect. With this we can recognize that Incenses had ability to control the quantity of lipid peroxide in brain. In the conclusion, Incenses has significant anticonvulsive effect, so I strongly recommend to prescribe Incenses to treat convulsive disorder like epilepsy.

• Wind and Structures
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• v.32 no.1
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• pp.1-9
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• 2021

Vortex generators are commonly used in mechanical engineering and the aerospace industry to suppress flow separation owing to their advantages of simple structure, economic viability, and high level of efficiency. Owing to the flow separation of the incoming wind on the leading edge, a suction area is formed on the roof surface, which results in a lifting effect on the roof. In this research, vortex generators were installed on the windward surface of a flat roof and used to disturb to roof flow field and reduced suction based on flow control theory. Computational fluid dynamics (CFD) simulations were performed in this study to investigate the effects of vortex generators on reduce suction. It was determined that when the vortex generator was installed on the top of the roof on the windward surface, it had a significant control effect on reduce suction on the roof leading edge. In addition, the influence of parameters such as size, placement interval, and placement position of the vortex generator on the control effect of the roof's suction is also discussed.

• Korean Journal of Food Science and Technology
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• v.23 no.4
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• pp.420-427
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• 1991

The structure of fresh, salted and heated petiole tissue from Chinese cabbage was examined with optical microscope, and the pectin of the tissues was fractionated by successive extraction. The pectin in Chinese cabbage consisted mainly of high methoxyl pectin(pA) and low methoxyl pectin(pB). The pA content was converted to pB markedly by salting and heating at $60{\sim}70^{\circ}C$ for 30 min while heating the cabbage above 80 decreased pB content. The firmness of heated tissue was highly correlated with pB content(r=0.996). Cytorrhysis test showed that pore size of the tissue became smaller by salting and heating at temperature below $80^{\circ}C$.

• Horticultural Science & Technology
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• v.17 no.3
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• pp.346-351
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• 1999

According to their flower color and the shape of petal, sepal, and lip, Calanthe species native to Cheju Island are named as follows; 'Arang', 'Cheongsu', 'Sara', 'Aeyeol', 'Darigot', 'Saebaengi', 'Andeok', 'Setbyeol', 'Kyorae', 'Jasujeong', 'Baekrok', 'Seokwang', 'Deokcheon', 'Seonheul', 'Saechimi', 'Jokduri', 'Baedal', 'Noksu', 'Noeul', and 'Dansim for 20 cultivars of Calanthe discolor; 'Hwanghee', 'Waheul', 'Illchool', 'Hwangryong', 'Dabo', 'Hwangjinee', 'Daeha', 'Chwikwang', 'Seokyang', 'Eunpa', 'Chwiseon', 'Sinbaram', 'Ara', 'Dano', 'Pakae', and 'Sojeob' for 16 cultivars of Calanthe sieboldii; 'Dongkwang', 'Myeongdeok', 'Wangdolseon', 'Myeongryeok', 'Kwibuin', 'Semi', 'Cheonwangsa', 'Mandeok', 'Seolmundae', 'Kyeongok', 'Darangsi', 'Byeolbang', 'Honghak', 'Dongbaeksan', 'Chejudo', 'Samda', 'Kwandeok', 'Youngjusan', 'Tamra', 'Koyeongdi', 'Yongduam', and 'Jeolbuam' for 22 cultivars of Calanthe bicolor.

• Korean Journal of Food Science and Technology
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• v.24 no.3
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• pp.226-231
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• 1992

A generalized linearization model for stress relaxation curves of vegetative tissues was proposed as $[F_{(o)}t^n/(F_{(o)}-F_{(t)})=k_1+k_2t]$, taking into account internal structure changes under a constant strain. Where $F_{(o)}$ is the initial force, $F_{(t)}$ is the decaying force after time t, and $k_1$, $k_2$ and n are constants. This model was well fit to stress relaxation curves of a variety of raw and processed fruits and vegetables.

• Economic and Environmental Geology
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• v.32 no.3
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• pp.293-306
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• 1999

The lower Permian jungseong Formation, Taebaegsan basin (Baegunsan Syncline), represents a coal-bearing siliciclastic succession which was later modified by the Songrim or Dabo orogeny. Sandstone perography and clay mineralogy were studied to understand the thermal history of the Jangseong Formation during basin evolution. Petrographic study indicates the Jangseong sandstones are composed of quartz, feldspar, lithic fragments (metamorphic and sedimetary), and varying proportions of matrix and cement. The dominance of quartz(<97%) over feldspar (<1%) and lithic fragments (<2%) classifies most Jangseong sandstones as quartz arenotes or quartzwackes, but lithic graywackes and sublithic arenite locally occur. The diagentic features of these sandstones include mechanical compaction, cemenation by quartz and clay minerals indentified in the Jangseong Formation by X-ray diffraction analysis are late-stage clay pore-filling. Clay minerals isdentified in the Jangseong Formation by X-ray diffaction analysis are illite, kaolinte, and pyrophyllite with a minor amount of chlorite and micas. The illite, kaolinite, and pyrophyllite appear to be largely autjigenic based on their well-crystallinity forms. There authigenic clay minerals form clay minerals form clay coats/rims and late-stage pore-filling cements, Illitecrystallinity shows that the Jangseong formation has been in late-diagenetic zone to early-epizone, which ranges in temperature from $200^{\circ}C$ to $300^{\circ}C$. In assition, kaolinite-pyrophyllite transition suggests that paleotemperature of the formation has reached at least $265^{\circ}C$. Such temperatureis likely to be consistent with homogenixation temperatures of fluid inclusions in quartz veins in the formation. Thus, the Jangseong Formation has been subjected to paleotemperature of about $265^{\circ}C$. The major heat source responsible for paleotemperature may be hydrothermal solutions. The passage of hydrothermal solutions was probably assisted by fractures created during the basin-modifying tectonism of the taebaegsan basin.