• 대한조선학회 특별논문집
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• 대한조선학회 2011년도 특별논문집
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• pp.63-69
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• 2011

Exhaust gases of a vessel from a main engine, a diesel generator and an incinerator contain very harmful substances like soot, $SO_2$ and NOx. Careful design of funnel shape is required to prevent those harmful exhaust gases from influencing on accommodation and a fan room. Meanwhile, the exhaust gases are also hot enough to damage electronic devices like radar. Therefore the funnel design should be considered so that electronic devices are not directly exposed to the exhaust gas in the strong stern wind. This study may propose guidelines of optimum design criterion for the anti-thermal damage design of the electronic devices and anti-recirculating design of harmful exhaust gas near the accommodation. From CFD analyses, we can understand that the major factors affecting the exhaust gas dispersion are the large scale mixing by separation vortices and the sluggish flow in the recirculation region. We hope that the funnel flow analysis around ship's funnel is used for practical optimum funnel design to minimize the exhaust gas dispersion by adjusting the funnel shape, the position of the exhaust pipe, the shape of bulwark, the exhaust direction of air ventilated an engine room and the angle of the exhaust pipe.

• Journal of Chest Surgery
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• 제19권4호
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• pp.707-714
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• 1986

Funnel chest is the most common deformity of the sternum. It is characterized by a funnel shaped depression of the sternum with sharp angulation and lengthening of the costal cartilages, with the result that the cartilages point posteriorly. We have experienced with eight cases of funnel chest for 2 years recently, and they were corrected by the method of Ravitch operation with or without Kirschner`s wire. The postoperative course was uneventful. And now we report these with literature review.

• Journal of Chest Surgery
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• 제16권2호
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• pp.226-230
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• 1983

Two patients with funnel chest deformity were corrected at the Department of Thoracic Surgery of Chungnam National University Hospital . The first case was 11 year old boy, suffering from exertional dyspnea with asymmetrical funnel chest deformity, of which hollow cavity was measured 80 ml of water. The second case was 6 year old boy, suffering from frequent upper respiratory tract infection with symmetrical funnel chest deformity, of which hollow cavity was measured 50 ml of water. These two cases were corrected by Ravitch method, left lower lobectomy was performed concurrently on the first case. The result was satisfactory.

• Journal of Chest Surgery
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• 제1권1호
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• pp.31-36
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• 1968

A case of funnel chest associated with von-Recklinghousen`s disease of the skin who was treated surgically under the method of sternoturn-over at the 63rd Army Hospital, Republic of Korea Army, is presented with review of the literature.

• Journal of Chest Surgery
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• 제7권2호
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• pp.153-162
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• 1974

Four patients with funnel chest deformity corrected in the Department of Thoracic Surgery, Seoul National University Hospital are presented. The first case was a 21-year old female with cyanosis, clubbed fingers and systolic murmur on the left infrascapular region on physical examination associated with agenesis of the right lung. The deformity was of asymmetrical funnel chest, in which the left hemithorax was more sunken. She was corrected by the method of Funnel Costoplasty of Wada. The second case was a three years old boy whose anterior chest wall was symmetrically deformed, and he was corrected by the method of Ravitch using Adkins strut under the sternum. The third was a 22-year old man with symmetrical deformity, and was corrected by the method described by Shannon in 1973. The last patient was a 22-year old man and he had dyspnea on exertion, palpitation and apical systolic murmur with symmetrical funnel chest deformity. He was also corrected by Ravitch operation, All of them has excellent result.

• Nuclear Engineering and Technology
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• 제52권8호
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• pp.1724-1731
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• 2020

Low cycle fatigue tests on the hydrogenated welding seam of Zr-Sn-Nb alloy at room temperature and 360 ℃ had been carried out by using the funnel-shaped flat specimens. The relationships between nominal stress & strain directly measured across the funnel and local stress & strain at the root of the funnel are given by considering cyclic plasticity correction. The results show that the fatigue resistance of welding seam at room temperature is only slightly better than that at 360 ℃. Probabilistic fatigue life curves are obtained by using a two-parameter power function.

• 한국응용곤충학회지
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• 제32권1호
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• pp.76-82
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• 1993

경기도 화성군 소재 한국인삼연초연구소 경작시험장 내에서 1990년과 1992년에 땅강아지(Gryllotalpa africana)의 주음성을 조사하였다. 웅성충은 지표 밑 굴의 입구로부터 유인음을 냈은데 강도는 입구 15 cm 위에서 77~80 dB 이었다. 녹음된 웅충 유인음이 직경 1.4m의 funnel중앙에 설치된 2개의 horn speaker에 의해 105~110 dB 로 증폭하여 야외에서 방사되었을 때 비상 성충이 일몰 후 약 30분부터 1.5시간 동안 유인되었다. 유인성충들 중, 14.3~16.7%는 funnel안에, 65.7~74.7%는 발음원으로부터 2 m 이내에 지면에 착지하였다. 자충률은 66.7~74.3%였는데, 이는 야외 개최군의 성비에 기인하는 것으로 보였다. funnel 안과 그 중심에서 2m 이내의 거리에 착지하는 성층수는 blacklight trap에 유인된 성층수보다 다소 많은 경향을 보였다.

• 한국세라믹학회지
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• 제35권11호
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• pp.1155-1161
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• 1998

브라운관 funnel glass 내며의 흑연 피막의 저항에 관하여 연구하기 위하여 흑연이 함유된 도전성 도료를 제조하여 flow coating 방법으로 28" wide TV용 funnel glass 내면에 도포하고 흑연피막의 특성과 브라운관의 동작 특성을 평가하였다. 고형분 농도가 증가함에 따라 도전성 도료의 점도와 흑연피막의 두께는 증가하였으며 흑연피막의 전기저항은 감소하였다. 도포 후 건조조건에 따라서도 도전막의 표면상태, 전기저항 및 브라운관의 초기동작 특성등이 다르게 나타났다. 도전성 도료의 고형분 농도는 27%, 점도는 13 cps 전후에서 안정한 흑연피막을 제조할 수 있었으며, 이 때 진공특성이 최적의 상태로 나타났다. 그리고 도전성 도료의 상태와 제조조건에 따라서 브라운관의 다른 전지적 특성들도 변할 수 있기 때문에 브라운관 전체의 특성을 동시에 평가를 해야한다고 생각한다. 그리고 funnel glass에서의 부의 별 저항산포 차리를 줄이기 위해서는 도포 시에 도전성 도료를 주입하는 위치, 건조 조건, funnel glass의 예열 온도 등에 대한 조사도 이루어져야 한다고 생각한다.

• 수산해양기술연구
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• 제34권1호
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• pp.6-12
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• 1998

The moving behaviour of Yellowtail Seriola quinqueradiata schools in the main-net of a large scale set-net was investigated in relation to the catching function of the funnel-net by a scanning sonar. The investigation was took place in the Kishihata set-net fishing ground located in Nanao city Ishigawa prefecture, Japan from Nov. 9 to Nov. 13, 1992. The obtained results are summarized as follows; 1. Fish schools showed the greatest number at the playground in the morning and at the bag-net in the afternoon. The fish schools remained long time in the main-net. 2. The rate of fish school through the funnel-net was smaller than that of fish school which is though the playground and bag-net. Because the Yellowtail school changed the shape of school in passing the funnel-net. 3. The rate of entering the bag-net was 24%, among the fish school heading to the outer funnel-net. But, the rate of escaping to the playground was 27%, among the fish school heading to the inner funnel-net. It seems that the structure of the outer funnel-net was not enough to lead the fish to the bag-net. However, the structure of the inner funnel-net was very effective at preventing escape. 4. It is appropriate to haul the net in the morning in considering the number of accumulated fish in the bag-net during the survey.

• 대한방사선과학회:학술대회논문집
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• 대한방사선과학회 1994년도 추계학술대회
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• pp.99.2-100
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• 1994