• Korean Architects
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• no.3 s.383
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• pp.92-99
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• 2001

96년 미국과 멕시코로 루이스 칸과 바라간 등의 건축 답사를 다녀온 후로, 우리 전통 문화유산을 두루 보러 다녔다. 그동안 가까이 있는 것은 언제건 보겠거니 하고 미뤄 온 터라, 우리 것을 너무 도외시해 온 것 같은 자책감이 생겼기 때문이다. 그리고 건축관에 변화가 있는건 아니지만, 답사하면서 이따금 좋은 느낌을 만나 반가웠다. 솔직히 말해서 다 그런 것은 아니고 손꼽아 말할 수 있었다. 그러면서 필자는 건축적 가치의 획득이 고전과 현대 또는 양식의 차이에 의해서가 아니고, 자체의 성공 여부에 있다는 것을 확신하게 되었다. 건축의 본질은 변함없으며, 건축에 반영된 시대 상황이 다를 따름이라 생각한다. 우리는 훌륭한 문화유산을 많이 갖고 있다. 하지만 국가나 개인의 살림이 넉넉해서 그렇게 되어졌다고 생각지는 않는다. 종묘가 만들어진 것은 정신적 힘에 의해 이룩됐을 것이다. 그렇게 해서 지금 우리에게 위대한 모습으로 남겨 있는 것이 감사하다. 전통건축은 현대 사유 체계로는 추구될 수 없는 이상적인 모습을 띠고 있다. 그리고 오늘날 건축의 자본주의 행태와 대조되는 교훈도 느낀다. 도대체 우리 선조들에게는 구도하듯 짓는 어떤 전통이 있었기에 그렇게 훌륭한 건축이 남겨질 수 있었을까? 그 흔적을 나름대로 찾아보고자 한다.

• Korean Journal of Food Science and Technology
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• v.28 no.3
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• pp.514-520
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• 1996

The purpose of this study was to develop the production technology of modified starch. Corn starches were gamma irradiated at 0-110 kGy and the effect of irradiation dose levels on the physicochemical properties of corn starches were investigated. Blue value linearly decreased, while alkali number and solubility markedly increased as irradiation dose levels were increased. The optical transmittance increased as applied irradiation dose levels were increased in the temperature range of $65-95^{\circ}C.$ Water binding capacity and swelling power showed maximum value at 30 and 10 kGy, respectively and they tended to decrease thereafter. Gelatinization viscosity of the gamma irradiated starch considerably decreased as compared to that of the non-irradiated starch. Irradiation at 110kGy resulted in a marked reduction of peak viscosity and cooling viscosity at $30^{\circ}C$ by 100 and 300 times, respectively. The physicochemical properties of corn starch irradiated at 30 kGy were similar to those of commercial acid-modified starch, while those of corn starch irradiated at 100 kGy were similar to those if oxidized starch.

• Current Research on Agriculture and Life Sciences
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• v.30 no.2
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• pp.82-89
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• 2012

Commercial powdered soups, such as potato soup(PS), corn soup(CS), and chicken-herb soup(CHS), were gamma-irradiated at 0, 1, 5 and 10 kGy and subjected to physicochemical evaluation and identification trials by analyzing photostimulated luminescence(PSL), electron spin resonance(ESR), and thermoluminescence(TL). The changes in moisture content and pH of soup samples were negligible upon irradiation. The Hunter's color determinations showed that lightness (L value) decreased and yellowness (b value) increased as the irradiation dose increased in PS sample. The viscosity of irradiated samples was reduced in the order of PS, CS and CHS. The analyses of PSL, ESR and TL were applicable to the identification of irradiated powdered-soups at more than 1 kGy by detecting PSL photon counts/60 sec(over 5000), radiation-induced multicomponents-ESR signal, and typical TL glow curve at $150-250^{\circ}C$.

• The Korean Journal of Nuclear Medicine
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• v.37 no.5
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• pp.308-316
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• 2003

Purpose: The green tea polyphenol (GTPP) has been known to exert antioxidant activity as a radical scavenger as well as cancer preventive and cancer growth inhibition effect. The aim of this study was to identify whether GTPP not only potentiate the growth inhibition effect in ${\gamma}-irradiated$ human cancer cell but also exert protection action for irradiated human normal cell. Materials and Methods: GTPP (80% catechin including >45% EGCG) added in the HL60, human leukemia, and NC37, human lymphoblast, before irradiation. After establishing the amount of GTPP and the dose of radiation, the cells were treated with the GTPP for 6 hours and irradiated with the determined doses. Results: Viability when $10{\mu}g/ml$ GTPP added before ${\gamma}-irradiation$ with 1 Gy to NC37 cells was not different in comparison with control but it when was irradiated with 3 Gy significantly different (1 Gy;P=0.126, 3 Gy;P=0.010). $20{\mu}g/ml$ GTPP did not show significant difference in both NC37 cells irradiated with 1 Gy and 3 Gy (1 Gy;P=0.946, 3 Gy;P=0.096). Viabilities were significantly decreased with concentration of additional GTPP in HL60 with 1 or 3 Gy (1 Gy $69.0{\pm}1.7%\;vs\;42.4{\pm}1.3%,\;3\;Gy;\;66.9{\pm}3.9%\;vs\;44.2{\pm}1.6%$). Conclusion: In vitro study, we certified that when the cells were irradiated with dose below 3 Gy, GTPP provide not only anticancerous effect against cancer cells but also radioprotective effect in normal cells simultaneously. Theses results suggest the possibility that consumption of green tea could give the radioprotective effect and maximize the effect on internal radiation such as radioiodine therapy concomitantly.