• 한국환경과학회지
• /
• 제11권2호
• /
• pp.111-120
• /
• 2002

Asian dust(or yellow sand) occurs mainly in spring and occasionally in winter in east Asia, when the weather conditions are under an upper trough/cut-off low and surface high/low pressure system during blocking episode days associated with the stationary patterns of the upper level jet stream. The transport mechanism for Asian dust during the blocking episode days in spring 2001 was analyzed using the TOMS aerosol index and meteorological mesoscale model 5(MM5). Based on the E vector, an extension of an Eliassen-Palm flux, the blocking episode days were found to be associated with the development of an upper cut-off low and surface cyclones. Concurrently, the occurrence of dust storms was also determined by strong cold advection at the rear of a jet streak, which exhibited a maximum wind speed within the upper jet stream. As such, the transport mechanism for Asian dust from China was due to advection of the isentropic potential vorticity(IPV) and isentropic surfaces associated with tropopause folding. The transport heights for Asian dust during the blocking episode days were found to be associated with the distribution of the isentropes below the IPV At the same time, lee waves propagated by topography affected the downward motion and blocking of Asian dust in China. The Asian dust transported from the dust source regions was deposited by fallout and rain-out with a reinforcing frontogenesis within a surface cyclone, as determined from satellite images using TOMS and GMS5. Accordingly, these results emphasize the importance of forecasting jet streaks, the IPV, and isentropes with geopotential heights in east Asia.

• Clinical and Experimental Pediatrics
• /
• 제46권2호
• /
• pp.192-194
• /
• 2003

가정분만으로 태어난 후 생후 6일된 신생아에서 전신성 강직-간대 경련이 발생하여 내원한 환아에서, 병력과 진찰 소견상 신생아 파상풍으로 진단하여 근이완제 및 인공환기요법으로 치료한 1례를 경험하였기에 보고하는 바이다.

• 한국콘텐츠학회논문지
• /
• 제22권5호
• /
• pp.553-564
• /
• 2022

이 연구의 목적은 <삼시세끼> 어촌편 1이 재현한 가족을 살펴보는 것으로, 이야기 전개구성과 등장인물의 관계 특성을 서사분석을 활용해 분석하였다. <삼시세끼>는 '기상-자유시간-아침-점심-저녁-휴식-취침'의 비교적 단순한 전개구성을 보였다. 각 등장인물에게는 주된 공간과 역할을 배치함으로써 '차줌마', '바깥양반', '호주니'의 캐릭터를 완성해갔다. 출연진이 모두 남성임에도 이들에게는 아내/주부/엄마, 남편/가장/아빠, 아들의 가족지위가 부여되었고, 매우 고정된 감정과 획일적 행동의 가족실천이 탄탄한 관계구조 속에서 반복되었다. 동시에 유자녀 가족, 양부모 가족, 이성애가족, 핵가족이라는 전형적 근대가족, 정상가족, 표준가족을 연출하였다. 즉 <삼시세끼>는 스위트 홈의 표상을 적극 차용해 정상가족 이데올로기를 강화시켰다.

• 한국환경과학회지
• /
• 제25권8호
• /
• pp.1191-1206
• /
• 2016

Transported deposit was accumulated in a grit chamber built at the mouth of Yeocheoncheon in 1987 with the intention of blocking the influx of sediment into the Ulsan-harbor. This study attempted to analyze the effects of the transported deposit on the water quality at Yeocheoncheon. Only one episode of dredging has been performed in the approximately 25 years since the grit chamber were built, leading to the formation of stagnant water in the grit chamber due to a large amount of transported deposit. The deposit has a relatively high organic content, in the range of 11.7-25.9% (mean 18.3%). It appears that the main reason for the upstream transport of water pollution from the mouth of the Yeocheoncheon is the tides. The effects of organic content and stagnant water on water quality were analyzed using WASP. Moreover, the changes in water quality arising due to the removal of the grit chamber were analyzed. Results indicated that BOD improved by 18.8-100%, while T-P improved by 90.0-617.4%, between the grit chamber and Hanbi-Gyo, which is located 1.3 km away from the grit chamber.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
• /
• 제42권1호
• /
• pp.43-46
• /
• 2016

Ameloblastic carcinoma is a malignant form of ameloblastoma defined by histological evidence of malignancy in primary, recurrent, or metastatic tumor. Such a tumor is rare, and the maxilla is an unusual site. Due to its rarity, the characteristics of this tumor in the maxilla have not been well described. Case 1: A 55-year-old, ill-appearing Nigerian male presented to our center with left maxillary swelling of seven-year duration. The swelling had been slow-growing and painless until one year prior, when the growth became rapid and was coupled with severe pain. The swelling affected both oral function and facial esthetics, and the patient reported difficulty breathing. There was a maxillary, ulcerated swelling extending from teeth 12 to 18 and blocking the left nostril. The involved teeth were moderately mobile. Case 2: A 32-year-old male farmer presented with recurrent right maxillary swelling of six-year duration. Prior to this episode, he had undergone surgery for ameloblastoma (follicular type). The present swelling was fungating through the skin and protruding into the right nostril. Ameloblastic carcinoma is an aggressive odontogenic tumor that requires aggressive surgical treatment.