• Journal of Korea Far Infrared Association
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• s.38
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• pp.40-41
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• 2008

• Journal of Korea Far Infrared Association
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• s.16
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• pp.21-30
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• 2003

• Journal of Korea Far Infrared Association
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• s.17
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• pp.17-24
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• 2003

• Journal of Chest Surgery
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• v.37 no.9
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• pp.793-795
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• 2004

Modified Norwood procedure with maintaining cardiac beat was done in a 30-day-old neonate. Procedure was done with regional perfusion of innominate and coronary artery. Postoperative course was uneventful. Second-stage operation (bi-directional cavopulmonary shunt) was done 4 months later. The diameter of ascending aorta was more than 5 mm, Norwood procedure can be done in beating hearts.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.38 no.2
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• pp.42-42
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• 2001

본 논문은 주파수 천이를 적용시킨 광무선(fiber-radio)시스템의 광링크부에 대한 성능분석을 한다. 제시된 광링크부는 CS(control station)에서 얻어진 밀리미터파 대역 광파일럿톤(optical pilot tone)이 하향링크뿐 아니라 상향링크에도 공급되도록 하여 BS(base station)의 구조를 간단히 하였다. 광파일럿톤을 얻기 위해 CS의 EOM(electro-optic modulator)을 MAB(maximum bias), MIB(minimum bias), QB(quadrature bias)로 바이어스를 달리할 수 있으며 각각의 경우에 따라 링크의 성능을 분석한다. 분석은 레이저 광원의 전력이 일정한 경우와 PD(photo detector)에 수신되는 광 DC 전력이 일정한 경우에 대해서 행하여지며 각 경우에 대해서 최적의 하향링크 CNR 및 상향링크 SFDR(spurious free dynamic range)을 얻기 위해 효과적인 바이어스 방식을 제시한다

• Journal of Chest Surgery
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• v.37 no.11
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• pp.918-921
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• 2004

Berry syndrome (interrupted aortic arch, aortopulmonary window, and aortic origin of right pulmonary artery with intact interventricular septum) is a very rare and complex cardiac malformation. We report a successful one-stage repair in a 14-day-old neonate without circulatory arrest.

• KOREAN POULTRY JOURNAL
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• v.13 s.144
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• pp.38-40
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• 1981

본회는 양계산업 발전의 가장 큰 저해요인인 가격안정을 제도적으로 시정하여 양계산업의 안정된 발전을 기하기 위해 안정기금과 양계산업 안정을 위한 총합적인 업무를 전담할 전담기구 등에 대한 연구를 그간 추진하여 왔으며 그 구체적인 방안으로 양계안정기금 설립을 추진하여 온 것은 이미 지난 9월호에 보도된 바이며 지난 9월 21일부터 본회 회의실에서 양계산업 안정기금 적립을 위한 추진 자문위원회 연속회의를 개최하였다. 이 날 회의에서는 이상윤 회장권한대행을 위시해 류종래(양계산업 안정기금 추진 위원장), 오봉국(서울대교수, 자문위원장), 오세정(건대교수, 세계가금학회 한국지부 회장), 박영인(미사료곡물협회 한국지부장), 이보연(삼일원종농원 대표, 본회부회장), 박준영(한협종계장 대표), 김중곤(현대양계사 대표), 임용택(계우회 연합회 부회장)씨 등이 참석하였다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.10 no.1
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• pp.96-103
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• 2006

This paper proposes a new technique for improving the efficiency of single phase high frequency switch mode boost converter. This converter includes an additional boost converter that follows the main hish frequency switching device. The additional converter, which is controlled at lower frequencies, bypasses almost all the current in the main switch and the high frequency switching loss is greatly reduced. Both switching devices are controlled by a simple method; each controller consists of a one-shot multivibrator, a comparator and an AND gate, and the maximum switching frequency can be limited without any clock generator. The converter works cooperatively in high efficiency and acts as though it were a conventional high frequency switch mode converter with one switching device. This paper describes the proposed converter configuration, design, and discusses the steady state performance concerning the switching loss reduction and efficiency improvement. and the proposed method is verified by computer simulation.

• Journal of TMJ Balancing Medicine
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• v.5 no.sup
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• pp.25-30
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• 2015

Therapeutic effect of Yinyang Balancing Appliance of functional cerebrospinal therapy (FCST) for meridian and neurologic yinyang balance was observed in a lumbar spinal stenosis case. One lumbar spinal stenosis case was managed with the Yinyang Balancing Appliance on temporomandibular joint (TMJ), combined with acupuncture. Clinical outcome measurement was based on subjective measures and clinical observations. The patient showed positive changes even after the initial treatment and this effect maintained over the follow-up period. further clinical and biological research on FCST is expected.

• Journal of Environmental Health Sciences
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• v.39 no.3
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• pp.230-238
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• 2013

Objectives: For our survey of the incidence of influenza viruses among respiratory viral infections in Seoul, we evaluated their prevalence among infectious acute respiratory viral patients in Seoul from 2010 to 2012 through regular surveillance. Methods: For influenza virus detection, we conducted real-time PCR analyses on 2,544 throat specimens collected from patients with respiratory viral infections in Seoul between 2010 and 2012. They were collected and then tested for the presence of influenza viruses through reverse transcription (RT) - polymerase chain reaction (PCR). Results: 19.1% (486/2,544) of the throat specimens were determined to be positive for influenza viruses. The incidences of influenza viral infection in the case of respiratory viral infections through regular surveillance in Seoul were 23.0% (212/923) in 2010, 6.4% (47/738) in 2011, and 25.7% (227/883) in 2012, and 10.8% (275/2,544) of type A, and 8.3% (211/2,544) type B influenza viruses. In addition, the greatest prevalence was in the 20-49 age group (51.6% ), which shows that influenza viruses constituted a major causative agent of acute respiratory viral infections. Conclusions: The distributions of influenza viruses and the epidemiologic patterns of the viral pathogen in acute respiratory viral infectious patients may provide potentially effective data for epidemiological studies in Seoul, Korea.