• Food Science and Biotechnology
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• 제16권3호
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• pp.463-469
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• 2007

We examined the hepatoprotective effects of colored potato flakes on acetaminophen (AAP)-induced liver damage in rats. F344/DuCrj (8 week-old) rats were fed a cholesterol-free diet with 54.9486 g of ${\alpha}$-corn starch/100g diet and were orally treated with 25% colored flakes of Kitamurasaki (KM: light purple), Northern Ruby (NR: red), and Shadow Queen (SQ: medium purple) potatoes co-administered with AAP (0.5 g/100 g diet) for 4 weeks. The hepatic thiobarbituric acid-reactive substances (TBARS) values in the KM, NR, and SQ groups were significantly lower (p<0.05) than those in the control groups with and without AAP. Furthermore, the hepatic catalase, Mn-superoxide dismutase (SOD), and Cu/Zn-SOD mRNA levels in the KM, NR, and SQ groups were higher than those in the control groups with and without AAP. The present findings suggest that colored potato flakes are useful as a prophylactic agent against oxidative liver damage.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제12권1호
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• pp.57-63
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• 2009

평소 복부 팽만을 보인 2세 남아가 내원 3일 전부터 간헐적인 구토를 동반하여 시행한 복부 방사선 사진에서 좌상복부에서 석회화 소견을 관찰하여 상부 위장관내시경과 복부 전산화 단층 사진을 시행하였다. 술 후 병리 검사에서 상당히 빈도가 드문 석회화 섬유 종양을 발견하였기에 보고하는 바이다.

• 한국전기전자재료학회논문지
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• 제27권9호
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• pp.566-570
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• 2014

Electrode pattern effects on the capacitive humidity sensor were investigated. The fabrication of the capacitive humidity sensor was formed with three steps. The bottom electrode was formed on the silicon substrate with Pt/Ti thin layer by using shadow mask and e-beam evaporator. The photo sensitive polyimide was formed on the bottom electrode by using photolithography process as a humidity sensitive thin film. The upper electrode was formed on the polyimide thin film with Pt/Ti thin layer by using e-beam evaporator and lift-off method. Three electrode patterns, such as circle, square, and triangle pattern, were used and changed the sizes to investigate the effects. The capacitances of the sensors were decreased 622 to 584 pF with the area decreament of patterns 250,000 to $196,250{\mu}m^2$. From these results, a capacitive humidity sensor with photo sensitive polyimide is expected to be applied to a high sensitive humidity sensor.

• 한국멀티미디어학회논문지
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• 제11권11호
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• pp.1515-1524
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• 2008

본 논문에서는 복잡한 배경이 나타나는 자동차 영상에서 다중색상 모델과 문자배치 정보를 이용한 번호판 추출 방법을 제안한다. 녹색 번호판과 흰색 번호판에 나타나는 문자의 배치 형태가 다르기 때문에, 먼저 번호판 색상을 추정한 후 해당 색상 번호판의 문자배치 정보를 최대한 활용하는 접근 방식을 사용하였다. RGB 색상 모델에 HSI와 YIQ 색상 모델을 결합한 다중색상 모델을 이용하여 녹색 영역이 추출되면, 해당 영역에서 추출된 연결요소를 분석하여 녹색 번호판의 문자배치 형태를 탐색한다. 이때 번호판이 추출되지 않으면, 전체 영역에서 추출된 연결요소를 분석하여 흰색 번호판의 문자배치 형태를 탐색한다. 마지막으로 번호판 문자배치 형태와 유사한 연결요소들을 묶어 번호판을 추출한다. 4개 영상에 대한 실험 결과 98.1%의 번호판 추출 성공률을 얻었으며, 제안된 방법이 빛의 세기, 그림자, 그리고 날씨의 변화에도 강건함을 알 수 있었다.

• 한국콘텐츠학회논문지
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• 제17권1호
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• pp.496-506
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• 2017

본 연구는 지상파 방송의 UHD TV가 본래의 공익적 목적을 수행하기 위해 제시된 기술적 제도적 방안들이 어느 정도의 실효성을 가지고 있는지 파악하고자 했다. 이를 위해 지상파 방송사와 정부가 제시한 각종 방안들의 타당성을 직접수신율 제고를 중심으로 분석했다. 분석결과, 직접수신율 제고를 위한 수신안테나 설치와 내장형 안테나 탑재는 현재의 유료방송 중심의 방송 환경이나 제조사와의 갈등으로 실현 가능성이 낮은 것으로 나타났다. 두 번째로 제시된 MMS의 가능성 역시 수신율 제고가 되지 않는다면 유료방송을 통한 재전송이 반복되는 결과를 초래할 것으로 판단된다. 마지막으로 재난방송의 경우에는 주파수 재배치 이후 주파수 상호 간 간섭의 문제와 음영지역의 불완전한 해소가 정책의 실효성을 낮추는 것으로 나타났다. 이와 같은 결과를 토대로 UHD TV의 공익적 목적을 수행하는 데는 당분간 어려움이 따를 것으로 예상된다.

• 한국임상수의학회지
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• 제28권1호
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• pp.163-172
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• 2011

Subcutaneous foreign body causes recurrent problems such as chronic soft tissue swelling and discharge. Wooden foreign body is one of the most common foreign bodies found in subcutaneous region including face, interdigit, and thoracic or abdominal area. This report demonstrated three dogs with wooden foreign body located in subcutaneous region of thoracic wall, abdominal wall and upper eyelid, respectively. Three dogs showed prominent soft tissue swelling adjacent the foreign body. A sinus or drainage tract was developed in two of these dogs. Ultrasonography revealed that hyperechoic linear structure accompanied acoustic shadow in all dogs, and which was diagnosed as a subcutaneous foreign body. Anechoic or hyperechoic fluid and hypoechoic tissue circumscribed the foreign body. A subcutaneous foreign body in case 3 was removed by clamp under ultrasound-guide with sedation. Sinography was performed in case 1 and clarified that the wooden foreign body did not perforate the thoracic wall and there was no direct communication into thoracic cavity. Ultrasonography and sinography can be used to identify the subcutaneous foreign body and evaluate the inflammatory reaction and relationship between foreign body and adjacent structures.

• 한국환경과학회지
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• 제18권9호
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• pp.1011-1015
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• 2009

The vegetated porous pavement can be installed as an alternative way to replace the traditional pavement, which contributes less to the water circulation system in the urban area. This study aims to an investigation based on the shadow and pressure of the vehicle system, where the turfgrass get grown and the green block get constructed on the grassy parking lot. This study might achieve these conclusions, in the case of use 'green block' makes grass parking lot, plant a kind of 'zenith' and takes sod thickness 40 mm are more efficient for turfgrass growth in the early times. In the case of parking over 8 hours in a day, after 5 weeks turfgrass growth would come into reduce. So over 4 hours parking and after 9 weeks, we need consider to setting up green block in grassy parking lot. The grassy ground would get pressured by the vehicles' load and it would bring into some damage due to the load after 3 weeks. So we should put the grass's growth root point under the designed a top of 'green block' level. When the vehicle amounts and parking density is in a low level, it could be an environmentally friendly product.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2002년도 학술대회지
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• pp.739-742
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• 2002

The supersonic, dual, coaxial jet impinging upon a vertical flat plate has recently been applied to a variety of industrial manufacturing processes, since it has several advantages over a conventional supersonic impinging jet. In the present study, experimentation is carried out to investigate the effects of the impinging angle of the annular flow and the design Mach number on the flow field formed over the vertical flat plate. A convergent-divergent nozzle is used to obtain the inner jet flow, its design Mach number being changed between $1.0\;and\;2.0$. The outer annular nozzle has a constant area of the Mach number of 1.0, and its impinging angle of $0^{\circ}\;and\;20^{\circ}$. The primary jet pressure ratio is changed in the range from 6.0 to 10.0 and for the annular flow, the assistant jet pressure ratio is changed from 1.0 to 4.0. The distance between the dual, coaxial nozzle and flat plate is also changed. Detailed pressure measurements are conducted along the axis of the jet and on the flat plate as well. The impinging coaxial Jet flows are visualized using the Schlieren and Shadow optical methods. The results show that the flow field on the plate is not strongly dependent only on the primary and assistant pressure ratios but also the impinging angle of the annular nozzle.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2005년도 추계 종합학술대회 논문집
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• pp.153-160
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• 2005

3D 애니메이션의 화면에서 전해지는 분위기는 대부분 3D CG 라이팅의 설정에 따라 좌우 된다고 해도 과언이 아니다. 컴퓨터 그래픽의 맥락에서 라이팅은 예술적이고 기술적인 방법으로 디지털 씬(Scene)들을 비추는(밝히는) 과정이다. 그래서 관객은 화면에서 적절한 명쾌함과 분위기로 나타내고자 하는 감독의 의도가 무엇인지를 인지 할 수 있는 것이다. Lighting은 인간에 의해 창조 및 조작되는 빛과 색채의 미학으로서 장면들을 아름답고 조화롭게 만드는 역할을 한다. 또한 전달하고자하는 이야기와 표현하고자 하는 분위기를 상징적이고 은유적 기법으로 스타일화 한다. 그러므로 라이팅 스타일의 컨셉은 애니메이션의 특정한 상황이나 환경 그리고 아트 디렉션 밀접하게 연관되어진다. 그러나 불행히도 장면을 라이팅하는 작업공정에는 쉽게 할 수 있는 정해진 규칙이나 공식은 없다. 요컨대, 라이팅은 위치, 컬러, 농도, 그림자 영역과 범위를 포함하는 라이팅 셋업의 조건적 요소들로 애니메이션에서 보여 주고자하는 장면의 스타일을 결정짓는 데에 기여하지만, 그와 동시에 서정드라마냐 서스펜스냐 하이 드라마냐 와 같은 애니메이션의 장르와 장면의 스타일과 같은 전체적인 무드를 제시하는 예술적 측면을 간과해서는 않될 것이다.

• 대한방사선기술학회지:방사선기술과학
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• 제18권2호
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• pp.49-59
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• 1995

Recently, general radiography became to variety because of the continuous development of Inverter type generator and ortho chromatic system. Therefore, we must re-evaluate about patient exposure dose and image quality. I studied about chest radiography which has frequency among general radiography being used during FEB. to AUG., 1994 over 151 medical facilities from medical facilities that are located in Seoul area. The result obtained were as follows ; 1) The rectification method of the generator were employing mainly single phase full wave in 82.8 %, three phase full wave in 11.26 % and Inverter type in 4.64 % and condenser type is 1.32 %. 2) Exposure kV was used below 80 kV in most medical facilities and 21.8 % of the medical facilities was using high tube voltage higher than 120 kV. 3) The exposure time was used below the 0.05 sec in 28.4 %, in 29.8 % of the medical facilities used above 0.1 sec. 4) The usage frequency of the added filter is 15.3 %, and among them compound filter was used only 4 %. 5) Rare earth screen was used in 37.7 %. 6) The average skin entrance dose was 0.25 mSv, the range of dose is $0.05{\sim}0.79\;mSv$ in each medical facilities. 7) The average density of the lung field is 1.76, 0.49 in lung side, 0.30 in mediastinum and 0.37 in heart shadow. Therefore it is required to improve all of these for increasing image quality and reducing patient exposure dose as soon as possible.