• 현장농수산연구지
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• 제16권1호
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• pp.105-113
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• 2014

Equine herpesvirus type 1 (EHV-1) is an economically important pathogen of horses and exerts its major impact by inducing abortion storms and sporadic abortions in pregnant mares, early neonatal death in foals, and respiratory disease in young horses. Although equine herpesvirus type 4 (EHV-4) rarely causes clinical manifestations of disease in organs other than the respiratory track, isolated cases of myeloencephalopathy and sporadic abortions have been reported in EHV-4 infections. Here, we report an abortion storm in Thoroughbred breeding farms in Jeju island, South Korea. It occurred for 16 days from first abortion to last one. There were no clinical signs prior to abortion and stillbirth in broodmares. Two PCR-primers were made on glycoprotein B gene of EHV-1 and EHV-4 to amplify specific common regions of the viruses. We could detect the virus specific genes in aborted samples by PCR, and concluded that the cause of abortion storm was EHV infection. This report describes the first abortion storm case caused by EHV in Thoroughbred breeding farms in South Korea.

• 한국정보전자통신기술학회논문지
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• 제2권1호
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• pp.17-22
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• 2009

본 연구에서는 근전도의 근피로와 관계된 특징인자인 영교차율 및 저대역에너지, 푸리에변환과 AR모델에 의한 중앙주파수를 추출하여 근피로에 이를 때까지의 변화를 평가해 봄으로써 근피로 정도나 시점까지의 변화 정도를 비교 및 고찰하고자 한다. 측정 대상으로 20대 남녀 각각 3인이 참여하였으며 상완 이두근의 등장성운동으로 소진할 때까지의 근전도를 측정 기록하여 실험하였다.

• Journal of Chest Surgery
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• 제11권3호
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• pp.239-245
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• 1978

Recently, we experienced a case of rare neurilemmoma originated from intercostal nerve [9th] in the right chest wall in a 25 year old male officer. The tumor was incidentally found in the routine chest X ray, where the round well circumscribed mass tumor the ninth rib with notching and sclerotic margin, suggesting slowly growing benign benign of chest wall was revealed and the tumor mass was easily extirpated in the exploratory thoracotomy, with uneventful recovery. Grossly, the tumor was firm, partly soft and well circumscribed, measuring 4.5X3.0X 3.0 cm with yellowish smooth outer surface, attached with intercostal nerve trunk. Cut surface exhibits partly grayish white and largely hemorrhagic areas. Microscopically, the characteristic palisading arrangement of schwann cells and Verocay bodies are seen but dominant features are cystic degeneration and hemorrhage with organization and fibrosis. The sheath of intercostal nerve and capsule of neurilemmoma were con joined. There is no evidence of malignancy. The tumor was confirmed as neurilemmoma of intercostal nerve, Antony type B.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2001년도 가을 학술발표회 논문집
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• pp.615-620
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• 2001

The aim of this paper is to open up a relatively new type in bridge engineering by introducing plan and design of extradosed bridge which is implemented in Sungnam-Janghowon T/K project. The topic encompasses parametric study including the behavior of the bridge relevant to the cable layout, the distance from pier table to the first cable's location, the height of pylon, the stiffness of cross section and wind vibration to ascertain sectional type of bridge and span length. For the purpose of the knowledge base presented here, the important feature of design is recommended such as modeling method, camber control, finite element analysis and heat hydration of pier table. We can verify the issue related to the characteristics of extradosed bridge as a result of study and design endeavor.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2004년도 춘계학술대회논문집
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• pp.362-365
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• 2004

'Coil' occupies a much important position in delivering driving force of optical pick-up actuators. Up to now the main stream has been a winding coil type actuator, but actuators using FP-Coil(Fine Pattern Coil) have been considered for the more compacted and simple manufacturing process and have variously spreaded the application fields by product. We have tried to design actuators using PCB-Coil(Printed Circuit Board Coil) which has benefits in terms of price and manufacturing process. Especially this research has two main things those are to reduce the vibration of sub-resonance and to assure the do sensitivity in the performance of asymmetric optical pick-up actuator with PCB-Coil.

• 한국소음진동공학회논문집
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• 제21권5호
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• pp.393-399
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• 2011

An empirical formula proposed by Petersson and Plunt(PP's formula) and finite element analysis for impedance calculation of ship equipment foundations are investigated by comparing the analysis results with those of experimental results. The PP's formula well estimates resonant frequency of the foundations and impedance level except around the resonant region although the impedance level around the resonant frequency is heavily dependent upon the assumed loss factor. The results show that the PP's formula and finite element models can be complementarily used to estimate the impedance characteristics of various types of foundation of ships in design stage.

• Advances in pediatric surgery
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• 제11권2호
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• pp.165-170
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• 2005

The repair of esophageal atresia with a long gap continues to pose difficulties for the surgeon. There is a general agreement that the child's own esophagus is the best, however, primary repair is not always possible. Foker JE et al. (1997) developed a technique of esophageal lengthening using external traction sutures. We successfully treated one patient with a 4.5cm gap esophageal atresia (4 vertebral spaces) using the external traction suture technique.

• Advances in pediatric surgery
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• 제13권2호
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• pp.112-118
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• 2007

Ingested foreign bodies are common occurrences in the pediatric population. From October 2002 to April 2006, eight patients (6 male, mean age: $30.9{\pm}14.4$ months, range: 7~45 months) who had ingested metallic foreign bodies, such as bar magnets, coin-type magnets, screws, metal beads, and disk batteries, were selected for foreign body removal using a magnetic device under floroscopic control. A 1-cm-long cylindrical magnet (6 mm in diameter) was placed at the end of a 150-cm-long plastic tube from an IV set. The magnet was passed through the mouth into the stomach. Under fluoroscopic control, the magnet was maneuvered so that it attached to the metallic foreign bodies. The forgeign body was then easily removed by retracting the magnet with the metallic object attached. This procedure was successful in six patients of 8 patients. This procedure is a minimally-invasive and may avoid the use of anesthesics, endoscopy or surgery.

• 한국지반공학회논문집
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• 제17권6호
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• pp.173-180
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• 2001

지진동으로 인한 개착식터널의 동적 거동특성을 파악하기 위해 Prototype터널 폭이 약 14.2m, 높이가 약 8.5m를 1/40sca1e로 축소제작한 모형체의 진동대 실험을 수행하였으며 본 실험에서는 터널의 토피고 및 원지반의 경사각에 따른 영향을 분석하였으며 이를 동적수치해석결과와 비교 분석하였다. 진동대 실험결과 터널의 토피고가 증가할수록 터널에 발생되는 응력 및 가속도는 감소하는 것으로 나타났으며 이는 터널의 설치심도가 증가할수록 주변지반의 구속효과가 증가하기 때문인 것으로 판단된다. 또한 원지반의 경사가 완만할수록 터널에 발생되는 응답치는 증가하는 경향을 보이고 있는데 이는 지진동으로 인한 주변지반의 구속효과가 원지반의 영향 보다는 되메움토사의 영향을 지배적으로 받기 때문인 것으로 판단된다. 또한 진동대실험결과 및 상시조건의 구조해석결과와 비교하면 터널의 토피고가 터널직경의 1배(1D)이상 확보되는 조건일 경우, 지진동이 터널에 미치는 영향이 적은 것으로 나타났다.

• 한국강구조학회 논문집
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• 제28권6호
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• pp.415-425
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• 2016

스틸스터드 내력벽 시스템은 국외에서 중고층형 모듈러 건축에 널리 사용되는 구조형식이다. 국내의 중고층형 모듈러 시스템에 스틸 스터드 벽체를 적용하기 위해서는 내진성능 확보가 필수적이다. 본 연구에서는 스트랩브레이스를 갖는 모듈러 건축 스틸스터드 내력벽 시스템의 횡력저항성능 및 유효강성을 제안하였다. 스트랩 브레이스와 수직외측스터드의 사양을 달리하는 2개의 실물 실험체에 대해 주기하중에 대한 실험을 실시하여 제안된 설계식을 검증하였다. 수직외측스터드의 휨거동을 고려할 수 있는 설계식을 통해 실험체의 공칭강도, 탄성강성, 항복변위 등을 예측하고 실험을 통해 검증하였다. 실험에 의한 최대강도는 예측식 대비 1.11~1.18배 수준으로 평가되었다. 박판의 스트랩 브레이스를 갖는 스트랩 스터드패널은 일반적으로 에너지소산능력이 매우 낮은 것으로 평가되나, 본 연구에서 제안한 수직외측스터드의 유효높이를 줄이고 브레이스의 각도를 낮춘 시스템의 경우 등가점성감쇠비가 최대 9.42% 수준으로 충분한 에너지소산능력이 확보될 수 있음을 확인하였다.