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症例(증례) : 성인에서 발견된 기관지식도루 치험 1례
서연호 ( Yeon Ho Seo ),김민호 ( Min Ho Kim ) 전북대학교 의과학연구소 2004 全北醫大論文集 Vol.28 No.1
Congenital bronchoesophageal fistula is a rare anomaly that may go undiagnosed for many years. The diagnosis of this condition may be difficult due to its insidious clinical course. We present the case of a 54 years old man with a history of a coughing after drinking fluids and multiple pneumonias. The fistula was resected with reinforcement of a mediastinal pleura. Following that, associated diseased right middle and lower lobe were resected.
서동민(Dong-Min Seo),장연호(Yeon-Ho Jang),임익태(Ik-Tae Im) 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.12
In this study, heat transfer coefficient at the outside of a vaporizer for compressed liquid gases was experimentally studied. Heat transfer coefficient was determined by measuring surface temperatures of vaporizers and gas temperature of the inlet and outlet of the vaporizers. Nitrogen gas was used as a working fluid. Length of vaporizer, fin width and gas flow rate were changed in order to examine their effect to heat transfer coefficient. Correlation equation between Nusselt number using heat transfer coefficient for natural convection and Rayleigh number was established.
간경변증 환자의 급성 정맥류 출혈에 있어 Terlipressin및 Somatostatin 조기 투여의 지혈 효과에 대한 전향(논평참조)
서연석 ( Yeon Seok Seo ),엄순호 ( Soon Ho Um ),현종진 ( Jong Jin Hyun ),김연호 ( Youn Ho Kim ),박상훈 ( Sanghoon Park ),금보라 ( Bo Ra Keum ),김용식 ( Yong Sik Kim ),진윤태 ( Yoon Tae Jeen ),이홍식 ( Hong Sik Lee ),전훈재 ( Hoon J 대한간학회 2006 Clinical and Molecular Hepatology(대한간학회지) Vol.12 No.3
RVDT용 DSP 기반 위상 자동보정 디지털 신호처리기 FPGA 구현
김성미,서연호,진유린,이민웅,조성익,이종열,Kim, Sung-mi,Seo, Yeon-ho,Jin, Yu-rin,Lee, Min-woong,Cho, Seong-ik,Lee, Jong-yeol 한국정보통신학회 2017 한국정보통신학회논문지 Vol.21 No.6
RVDT(Rotary Variable Differential Transformer)는 각도 변위를 측정하는 센서로써 출력 신호는 DSBSC-AM(Double SideBand Suppressed Carrier AM) 신호이기 때문에 출력 신호로부터 각도 변위를 알아내기 위하여 DSBSC-AM 복조 과정이 필요하다. 본 논문에서는 DSBSC-AM 신호의 복조기인 코스타스 루프를 수정하여 RVDT 출력 신호로부터 각도 변위를 추출하는 DADC(Digital Angle to DC)를 FPGA(Field Programmable Gate Array)로 구현하였다. 본 논문에서 설계된 DADC는 4선식과 5선식 RVDT에 적용가능하며, 코스타스 루프의 사용으로 기존의 아날로그 신호처리기와는 달리 외부의 소자를 사용하지 않고 RVDT 입력여기신호와 출력신호 사이의 위상 차이를 정확하게 보정할 수 있다. 또한 선형성 향상을 위하여 디지털 신호처리 기법이 적용되어 DADC는 기존의 아날로그 신호처리기의 선형성 오차 0.05%보다 적은 0.035%의 선형성 오차를 보였다. 구현된 DADC의 기능과 성능 테스트는 상용 RVDT 센서와 ADC(Analog to Digital Converter), 아날로그 출력단으로 구성된 통합 실험환경을 구성하여 진행하였다. A RVDT is a sensor that measures angular displacement and the output signal of RVDT is a DSBSC-AM signal. For this reason, a DSBSC-AM demodulation processor is required to determine the angular displacement from the output signal. In this paper, DADC(Digital Angle to DC) which extracts the angular displacement from the output signal of a RVDT is implemented based-on modified Costas Loop usually used in the demodulation of DSBSC-AM signal by using FPGA. DADC can used with both 4-wire and 5-wire RVDTs and can exactly compensate the phase difference between the input excitation and output signals of a RVDT unlike the conventional analog RVDT signal conditioners which require external components. Since digital signal processing technique that can enhance the linearity is exploited, DADC shows 0.035% linearity error, which is smaller than 0.005% that of a conventional analog signal conditioner. The DADC are tested in an integrated experimental environment which includes a commercial RVDT sensor, ADC and an analog output block.
박노부,서연호,문선혜,이용오,Park, No-Bu,Seo, Yeon-Ho,Moon, Seon-Hye,Lee, Yong-Oh 대한악안면성형재건외과학회 1993 Maxillofacial Plastic Reconstructive Surgery Vol.15 No.2
저자들은 두개저 골절을 동반하지 않은 단순 안면골 골절환자에서 본과에서 안면골 정복 수술후 발현한 외상성 경동맥해변동루 환자를 신경외과에 의뢰하여 분리풍선술식으로 처치한 후 현저한 임상적 증상의 개선을 가져왔고 12개월간 관찰시 다른 합병증도 유발되지 않았다. 외상성 경동맥해면동루는 두경부 손상시 매우 드물게 발생되는 심각한 합병증으로 임상증상의 복잡성 때문에 혼동하기 쉬으므로 Neurosurgeon과 협조하여 조기에 정확한 진단과 적절한 치료가 이루어지는 것이 바람직하다. Carotid-cavernous sinus fistula(CCSF) is an abnormal arterio-venous communication between the cavernous sinus and the internal carotid artery. It is usually caused by craniofacial trauma and a very rarely encountered complication, but it may also occur spontaneously. The most common cause of traumatic CCSF is blunt trauma, which usually associated with a skull base, frontal or midfacial fracture. The common clinical feature of CCSF are orbital bruit, headache, exophthalmos, chemosis, diplopia, visual disturbance and others. This dramatic ocular-orbital symptoms are principally due to orbital venous hypertension. The symptoms occured within a few hours to a maximum of a year after injury, usually within several weeks. The patient, 33-year-old female, developed a carotid-cavernous sinus fistula after only minimal closed trauma We present a rare case of CCSF associated facial bone fracture that was successfully treated by detachable balloon embolization with a review of the literature.
한국에서 비만 치료에 쓰이는 한약에 대한 연구 동향 보고: 2015년부터 2019년까지의 국내외 논문을 중심으로
김수전 ( Soo-jeon Kim ),서연호 ( Yeon-ho Seo ),이한솔 ( Han-sol Lee ),장호경 ( Ho-kyung Chang ),조재흥 ( Jae-heung Cho ),김고운 ( Koh-woon Kim ),송미연 ( Mi-yeon Song ) 한방재활의학과학회 2020 한방재활의학과학회지 Vol.30 No.4
Objectives This study has been conducted to verify frequently used herbs and herbal formulas to treat obesity in Korea during 2015 to 2019. Methods Publications related to treatment of obesity using herbal medicines from 2015 to 2019 were retrieved from 12 databases (PubMed, EMBASE, Scopus, China National Knowledge Infrastructure [CNKI], Koreanstudies Information Service System [KISS], National Digital Science Library [NDSL], Research Information Sharing Service [RISS], DBPIA, KMBASE, KoreaMed, KoreanTK, Oriental Medicine Advanced Searching Integrated System [OASIS]). Extracted articles were analyzed in terms of publication year, journal, and type of herbs. Results A total of 136 studies have been included in this study. 33 herbal formulaes and 129 herbs have been analyzed. Taeyeumjowui-tang was the most frequently studied herbal formulae and Ephedrae Herba was the most frequently studied herb. Ginseng Radix was the most frequently studied single herb in isolation from herbal formulae. Conclusions These results suggest that various herbs and herbal formulae can be used to treat obesity. Since this study includes every type of study, additional studies based on clinic are thought to be necessary. (J Korean Med Rehabil 2020;30(4):89-103)
요추 추간판 탈출증 환자의 의·한의 협진 의료이용 현황 분석: 건강보험심사평가원 환자표본 데이터를 이용하여
고준혁 ( Jun-Hyuk Ko ),유지웅 ( Ji-Woong Yu ),서상우 ( Sang-Woo Seo ),서준원 ( Joon-Won Seo ),강준혁 ( Jun-Hyuk Kang ),김태오 ( Tae-Oh Kim ),조휘성 ( Whi-Sung Cho ),서연호 ( Yeon-Ho Seo ),안종현 ( Jong-Hyun Ahn ),이우주 ( Woo-Joo 한방재활의학과학회 2021 한방재활의학과학회지 Vol.31 No.4
Objectives Lumbar herniated intervertebral disc (L-HIVD) is common disease in which Western-Korean collaborative treatment is performed in Korea. This study aimed to analyze Western-Korean collaborative treatment utilization of Korean patients with L-HIVD using Health Insurance Review & Assessment Service’s Patients Sample Data. Methods This study used the Health Insurance Review & Assessment Service-National Patient Sample (HIRA-NPS) in 2018. Claim data of L-HIVD patients were extracted. The claim data were rebuilt with the operational concept of ‘episode of care’ and divided into Korean medicine episode group (KM), Western medicine episode group (WM) and collaborative treatment episode group (CT). General characteristics, medical expenses and healthcare utilization were analyzed. In addition, the difference of average visit day and average medical expenses between non-collaborative group (KM plus WM) and CT were analyzed by the propensity score matching method. Results A Total of 64,333 patients and 365,745 claims were extracted. The number of episodes of WM, KM and CT was 69,383 (92.97%), 3,903 (5.23%), and 1,341 (1.80%) respectively. The frequency of collaborative treatment episode was higher in women and the age of 50s. The most frequently described treatment in CT was acupuncture therapy. As a result of the propensity score matching, the number of visit days and medical expenses in the collaborative treatment group was higher than in the non-collaborative group. Conclusions The analysis of healthcare utilization of Korean-Western collaborative treatment may be used as basic data for establishing medical policies and systematic collaborative treatment model in the future. (J Korean Med Rehabil 2021;31(4):105-116)