• 대한생식의학회:학술대회논문집
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• 대한불임학회 2003년도 제45차 추계학술대회
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• pp.149-150
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• 2003

• 한국동물학회:학술대회논문집
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• 한국동물학회 2003년도 한국생물과학협회 학술발표대회
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• pp.167.4-167
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• 2003

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• 한국영양학회:학술대회논문집
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• 한국영양학회 2000년도 추계학술대회 초록
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• pp.64-64
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• 2000

• 대한전기학회:학술대회논문집
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• 대한전기학회 2011년도 제42회 하계학술대회
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• pp.856-857
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• 2011

최근 레저와 이동수단으로 전기를 이용한 스쿠터와 자전거가 많이 연구 개발되고 있다. 이러한 어플리케이션에 사용되는 모터의 경우은 설계 및 제어 비용이 저렴하면서도 소음이 작고, 출력밀도와 효율이 요구가 된다. 대부분의 경우 BLDC가 전동기 및 제어기 제작 단가가 저렴하여 자전거 및 스쿠터의 전기 추진용으로 많이 사용되었지만 소음 및 효율등의 성능면에서는 요구사항을 만족하지 못하고 있다. 이러한 단점을 보완하기 위해서 현재 출력밀도와 효율이 높은 IPMSM이 많이 연구 개발되고 있다. 본 논문에서는 전기 스쿠터용 IPMSM의 영구자석 형상에 따른 특성을 연구하였다.

• Journal of the Korean Physical Society
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• 제73권12호
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• pp.1889-1894
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• 2018

An innovative small-scale piezoelectric energy harvester has been proposed to gather wind energy. A conventional horizontal-axis wind power generation has a low generating efficiency at low wind speed. To overcome this weakness, we designed a piezoelectric windmill optimized at low-speed wind. A piezoelectric device having high energy conversion efficiency is used in a small windmill. The maximum output power of the windmill was about 3.14 mW when wind speed was 1.94 m/s. Finally, the output power and the efficiency of the system were compared with a conventional wind power system. This work will be beneficial for the piezoelectric energy harvesting technology to be applied to the real world such as wireless sensor networks (WSN).

• 대한약학회:학술대회논문집
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• 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.1
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• pp.308.1-308.1
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• 2003

We underwent this study to know correlation between the amount of portosysternic shunt/hepatic fibrosis and bioavailability parameters such as AUC, Cmax, Tmax and t1 /2 of high extraction ratio drug, propranolol, in CCl4-induced liver cirrhosis model of rats. This study describes the bioavaility study of propranolol(5 mg/kg), Shunt Index using thallium-201 per rectum scintigraphy to to measure the amount of portosystemic shunt indirectly and intrahepatic hydroxyproline content performed in the CCl4-induced liver cirrhosis model of rats. (omitted)

• Korean Journal of Radiology
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• 제1권1호
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• pp.60-63
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• 2000

Renal hemangioma is an uncommon benign tumor which usually causes painless or painful gross hematuria. Its preoperative diagnosis is extremely difficult or even impossible. We experienced three cases of renal hemangioma, located mainly at the pelvocalyceal junction or in the inner medulla. US demonstrated variable echogenecity, and CT revealed a lack of significant enhancement. Where there is gross hematuria in a young adult, especially when the renal mass located in the pelvocalyceal junction or inner medulla shows little enhancement on CT, renal hemangioma should form part of the differential diagnosis.

• Journal of Chest Surgery
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• 제48권1호
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• pp.63-66
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• 2015

We present a case of left ventricular pseudoaneurysm, which is a very rare and fatal complication of cardiac procedures such as mitral valve replacement. A 55-year-old woman presented to the Department of Thoracic and Cardiovascular Surgery at Hanyang University Seoul Hospital with chest pain. Ten years prior, the patient had undergone double valve replacement due to aortic regurgitation and mitral steno-insufficiency. Surgical repair was successfully performed using a prosthetic pericardial patch via a left lateral thoracotomy.

• Tuberculosis and Respiratory Diseases
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• 제78권4호
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• pp.445-449
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• 2015

Occupational lung diseases are caused by several toxic substances including heavy metals; however, the exact pathologic mechanisms remain unknown. In the workplace, dental technicians are often exposed to heavy metals such as cobalt, nickel, or beryllium and occasionally develop occupational lung diseases. We described a case of occupational lung disease in a patient who was employed as a dental technician for over a decade. A 31-year-old, non-smoking woman presented with productive cough and shortness of breath of several weeks duration. Chest computed tomography revealed a large number of scattered, bilateral small pulmonary nodules throughout the lung field, and multiple mediastinal lymph nodes enlargement. Percutaneous needle biopsy showed multifocal small granulomas with foreign body type giant cells suggestive of heavy metals inhalation. The patient's condition improved on simple avoidance strategy for several months. This case highlighted the importance of proper workplace safety.

• 대한영상의학회지
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• 제82권3호
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• pp.575-588
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• 2021

면역글로불린 G4 (immunoglobulin G4; 이하 IgG4) 관련 질환은 특징적인 병리 소견을 동반한 섬유화를 일으키는 전신 염증성 질환이다. 영상검사는 IgG4 관련 질환의 진단 및 치료 반응 평가에 필수적이다. 본 임상화보는 IgG4 관련 질환의 다양한 임상 증례를 통해 영상 소견 및 감별진단을 제시함으로써 IgG4 관련 질환에 대한 이해의 폭을 넓히고자 한다.