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주정아(Jeong-A Joo),황인환(In-Hwan Hwang),조영일(Young-Il Cho),이동환(Dong-Hwan Lee) 대한기계학회 2012 大韓機械學會論文集B Vol.36 No.8
공랭식 응축기는 대기중의 공기를 이용해 스팀을 응축수로 전환시키는 발전용 냉각설비이다. 추운 겨울철, 공랭식 응축기는 열교환부 관내의 응축수가 동결되어 튜브 자체가 터지는 심각한 동파 문제를 수반한다. 이는 기존 공랭식 응축기 시스템이 가지는 튜브 출구의 구조적 문제로 인한 응축되지 않은 스팀 및 비응축성 기체의 역류가 주요 원인이 된다. 따라서 본 연구에서는 유사 모의 공랭식 응축기시스템을 설계 및 제작하여 기존의 공랭식 응축기 시스템이 가지고 있는 문제점을 구현하고, 이를 해결하기 위한 설계가 가능함을 실험적으로 증명하였다. 기존 공랭식 응축기 시스템의 작동 원리와 유사한 조건에서 실시한 실험에서 역류에 의한 튜브 동결을 관찰할 수 있었다. 반면 신개념 공랭식 응축기 시스템을 적용한 실험에서는 역류 및 동결 발생없이 열교환이 잘 이루어짐을 확인할 수 있었다. An air-cooled condenser is a device that is used for converting steam into condensate by using ambient air. The air-cooled condenser is prone to suffer from a serious explosion when the condensate inside the tubes of a heat exchanger is frozen; in particular, tubes can break during winter. This is primarily due to the structural problem of the tube outlet of an existing conventional air-cooled condenser system, which causes the backflow of residual steam and noncondensable gases. To solve the backflow problem in such condensers, such a system was simulated and a new system was designed and evaluated in this study. The experimental results using the simulated condenser showed the occurrence of freezing because of the backflow inside the tube. On the other hand, no backflow and freezing occurred in the advanced new condenser, and efficient heat exchange occurred.
진행성 위암에서 종양 맥관형성이 예후인자로서의 가치를 가지는가?
박정우(Jeong-Woo Park),이민효(Min-Hyo Lee),주정일(Jeong-Il Joo),주영태(Young-Tae Ju),정치영(Chi-Young Jeong),하우송(Woo-Song Ha),박순태(Soon-Tae Park),최상경(Sang-Kyung Choi),홍순찬(Soon-Chan Hong),권수인(Soo-In Kwon),이영준(Young-Jo 대한외과학회 1999 Annals of Surgical Treatment and Research(ASRT) Vol.57 No.3
정지선(Ji Sun, Chung),주정일(Jeong Il, Joo) 한국국제조세협회 2015 조세학술논집 Vol.31 No.3
In 1950, adoption of ‘disregard of the corporate personality’ was discussed in Japan. But, application of such a principle of law was so passive at that time. A lack of basis for recognizing the principle in the range of interpretation theory on positive law was one opinion. The other prevalent opinion was that there was a deep-rooted perception that there is no need to propound the principle because an established principle of law could solve legal disputes. In these circumstances, the Japanese Supreme Court’s verdict rendered on February 27, 1969 made this principle of law perceived as one of official law principles in Japanese law. The verdict officially declared recognition of the ‘disregard of the corporate personality’ principle. After then, an affirmative theory about the principle has become a mainstream theory, and courts made decisions based on the principle. The above principle of law is generally applied to Commercial Law and Corporation Law. However, where someone uses the legal form of corporation in Tax Law relation for economic purposes only, this principle of law can be applied in Tax Law for the reason that the legal form of corporation has to be denied when economic entities behind the corporate veil enjoy benefits by using the legal form of corporation. In Japan, although the principle of ‘disregard of the corporate personality’ can be applied in Tax Law, this principle is not used by taxpayers to avoid taxes. Also, there is no direct precedent that permits taxation based on the principle. And theories on this principle are divided into two: one is active theory which prescribes that the principle has to be counted as same foundation or same realization for Good Faith and Estoppel that are acknowledged as Rechtsquelle because those are inherent logics in Law, and the other is passive theory which prescribes that the principle must be analyzed passively because taxation exceeding the range of Tax Law Relation that exists in society is not allowed under the principle of no taxation without law. Thus, we can see that theories, application scope under case law and prerequisite for the principle of ‘disregard of the corporate personality’ are formed in Japanese Tax Law. Eventually, this is the way for realizing Fairness of Taxation by preventing abuse of corporation form as means of tax evasion. As Korea has not yet established theories or precedents concerning the principle in Tax Law, this is very suggestive for us.
백색 및 청색 방풍망 차광 처리가 ‘후지’, ‘홍로’ 사과 과실의 품질에 미치는 영향
강경진(Kyeong-Jin Kang),서정학(Jeong-Hak Seo),윤홍기(Hong-Ki Yoon),서정석(Jeong-Seok Seo),주정일(Jung-Il Joo),천종필(Jong-Pil Chun) (사)한국생물환경조절학회 2020 시설원예‧식물공장 Vol.29 No.2
본 연구는 ‘후지/M.9’와 ‘홍로/M.9’가 재식된 사과원에 바람이나 우박을 막기 위해 사용되는 망(구멍 크기 : 2×2mm)을 수관상부에 색상별로 백색과 청색을 나누어 설치한 후 햇빛의 차광정도 및 생육환경 차이 등에 따른 과실품질 변화를 조사하였다. ‘후지’ 사과의 경우 대기온도 34.8℃인 오후 2~3시경의 과실표면 온도를 측정한 결과, 무처리는 40.0℃로 가장 높았고, 청색 방풍망과 백색 방풍망 처리구는 각각 34.9℃, 36.6℃로 크게 낮았다. ‘홍로’에서는 무처리구가 44.2℃일 때, 청색 방풍망 처리구는 38.3℃, 백색 방풍망 처리구는 38.5℃를 기록하여 ‘후지’와 마찬가지로 온도 경감효과를 보였다. ‘후지’의 과피색차를 조사한 결과, 과피적색도(a*)는 무처리구가 16.5, 청색 방풍망 처리구는 18.0였으나, 백색 방풍망 처리구는 19.3으로 가장 높은 값을 보였다. ‘홍로’에서도 백색방풍망 처리구가 적색도가 34.9로 무처리구 28.1에 비해 유의하게 높은 적색도 발현을 보였다. 일소피해 조사결과, ‘후지’에서 청색 방풍망 처리구 3.8%, 백색 방풍망 처리구 4.2%로 무처리구 9.4%에 비하여 크게 경감되었고, ‘홍로’의 경우는 청색 방풍망 처리구는 8.8%, 백색 방풍망 처리구는 12.4%로 무처리구 28.8%에 비하여 일소발생이 현저히 감소하였다. 이 같은 결과는 처리별 자외선 수치를 측정하였을 때 무처리 구간의 자외선 값에 비해 청색 방풍망 처리구에서 유의하게 낮아 방풍망 처리에 의한 자외선 차단 효과에 의한 것을 확인할 수 있었다. In Yesan-gun, Korea"s main apple-producing region, the area of apple cultivation and yield are declining. In particular, the worsening quality of fruits due to unusually high temperatures amid recent climate change has also become a major challenge for apple orchards located on flatlands. The objective of this research is to investigate quality changes of apples according to different growing environments, depending on the shade of the sun, by covering the trees with different colors of wind nets. A white and blue wind nets with a hole size of 2 × 2 mm is installed on two experimental trees, 17-year-old ‘Fuji’ and ‘Hongro’, which are planted 1.5 m × 3.5 m in the north-south direction. Treatment of wind nets effectively lowered fruit surface temperature regardless of apple variety. When measuring the temperature of the fruit surface at 2 pm, the temperature of the air was 34.8°C, but the ‘Fuji’ of the untreated blocks was the highest at 40.0°C, while the blue wind net and the white wind net were significantly lower at 34.9°C and 36.6°C, respectively. In ‘Hongro’, the results showed that the surface temperature was effectively lowered by recording 38.3°C for the blue wind net and 38.5°C for the white wind net treatment when the untreated one was 44.2°C. According to the color difference in ‘Fuji’, the skin redness (a*) was the lowest with untreated control at 16.5, but the blue and white wind net treatment higher at 18.0 and 19.3, respectively. In ‘Hongro’, the white wind net treated fruit also showed a much higher skin redness than the untreated control of 28.1, showing much higher a* of 34.9. Sunburn damage in ‘Fuji’ apples amounted to 9.4% in untreated control. However, the blue and white wind net treatment revealed to 3.8% and 4.2%, respectively. In ‘Hongro’, those damage in the fruits treated with blue or white wind net, accounted for only 8.8% and 12.4%, respectively, significantly lower than 28.8% occurrence of untreated one. And, these results were understood to be the result of low UV radiation being blocked by the treatment of wind nets.