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이종주,김남주,정호경,곽상인,Jong Joo Lee,Nam Ju Kim,Ho-Kyung Choung,Sang In Khwarg 대한안과학회 2008 대한안과학회지 Vol.49 No.2
`Purpose: To investigate the clinical features and treatment results in eyelid sebaceous gland carcinoma. Methods: A retrospective chart review was conducted on 28 adult patients that were histopathologically diagnosed with eyelid sebaceous gland carcinomas from April 1981 to March 2005 in Seoul National University Hospital. Results: Among the 28 cases of eyelid sebaceous gland carcinoma, 9 cases (32.1%) had evidences of local invasion or metastasis at the initial diagnosis. Surgical resection was performed in the 27 cases (96.4%), and conjunctival cryotherapy, surgeries, such as maxillectomy, parotidectomy, and neck dissection, or radiation therapy were combined in cases of local invasion or metastasis. In the 19 cases of the localized tumor group, there were 2 cases (10.5%) of recurrence after an average 30 months of follow-up. The locally invasive tumor group (2 cases) showed 1 case of recurrence after 12 months of follow-up. In the 7 cases of the distant metastasis tumor group, tumors in 3 cases (42.9%) could not be controlled, and 3 cases (75.0%) showed recurrence after an average 45 months of follow-up. Conclusions: Eyelid sebaceous gland carcinomas with local invasion or metastasis afford higher potential for treatment failure, so early diagnosis is crucial. Because recurrence is possible, even when the tumor is completely removed, the extent of the tumor should be examined thoroughly and microscopically.`
마이크로웨이브-질산용출과자력/수력선별에의한자연금및자철석의선별효과
이종주,박천영,Lee, Jong-Ju,Park, Cheon-Young 대한자원환경지질학회 2020 자원환경지질 Vol.53 No.2
본 연구는 마이크로웨이브-질산용출과 자력/수력선별을 이용하여 정광으로부터 자연 금을 회수하는 것을 목표로 하였다. 마이크로웨이브-질산용출실험을 통해 용출용액으로부터 불용성-잔류물을 여과하였다. 용출용액을 원자흡수분광기(AAS)로 분석한 결과 Au는 전혀 용출되지 않은 것을 그리고 불용성-잔류물을 후방산란전자영상(BSE)으로 관찰한 결과 자연 금이 단체분리된 것으로 확인되었다. 불용성-잔류물을 자력/수력선별 하여 자성광물과 비-자성광물로 선별하였다. 자성광물에서 자철석이 회수되었고, 비-자성광물을 다시 수력선별한 결과 자연 금이 회수되었다. 자연 금은 X선 회절 분석(XRD)과 BSE 영상에서 확인되었다. This study aimed to recover native gold from the concentrate using microwave-nitric acid leaching and magnetic/hydro separation experiments. The insoluble-residue was filtered from leaching solution through microwave-nitric acid leaching experiment. As a result of the atomic absorption spectrometer(AAS) analysis of the filtered leaching solution, it was discovered that Au content was not eluted at all and it was observed from the back scattered electron(BSE) image that native gold was liberated in the insoluble-residue. When magnetic/hydro separation experiments were applied for the insoluble-residue, magnetic and non magnetic minerals were separtated from insoluble-residue. Magnetite was recovered from the magnetic minerals and as a result of applying the hydro separation experiment again for the non-magnetic mineral, native gold was recovered. The native gold was identified through the X-ray diffraction(XRD) analysis and BSE image.
이종주,김종현,황상원,김남주,정호경,곽상인,Jong Joo Lee,Jong Hyun Kim,Sang Won Hwang,Nam Ju Kim,Ho Kyung Choung,Sang In Khwarg 대한안과학회 2006 대한안과학회지 Vol.47 No.4
Purpose: Orbital hematic pseudocyst is the localized accumulation of organized blood-breakdown products within a fibrous capsule, and is known to be typically located subperiosteally. We report a case of orbital hematic pseudocyst in the intraconal space. Methods: A 51-year-old man visited our clinic, complaining of injection and bruise of his right eye one month before. On the orbit MRI, a mass assumed to be benign was detected in the intraconal space of his right orbit. After several months of follow-up, a decrease of visual acuity and visual field defect were detected in his right eye. Excision of the mass was done through lateral and medial orbitotomy. Results: Histologic examination showed the accumulation of blood-breakdown products within a fibrous capsule, and the mass was diagnosed as a hematic pseudocyst. Conclusions: When a well-demarcated and slowly growing mass is detected in the intraconal space of the orbit, the possibility of hematic pseudocyst should be considered.
이종주(Jong-Ju Lee),서인호(In-Ho Seo),이철(Chol Lee),오치욱(Chi-Wook Oh),김경희(Kyung-Hee Kim),박성옥(Sung-Ok Park) 한국항공우주학회 2007 韓國航空宇宙學會誌 Vol.35 No.4
본 논문에서는 과학기술위성 2호용으로 개발된 탑재체데이터 수신시스템(Data Receiving Equipment, DRE)을 소개하고 개발된 준비행모델(Proto Flight Model, PFM)에서의 기능 및 성능 시험 결과를 제시 한다. 탑재체데이터 수신시스템은 X 대역 수신기, 데이터 합성장치(Data Combine Equipment, DCE)와 수신 저장 컴퓨터(Receiving and Archiving Computer, RAC)로 구성되어 있다. DCE는 I&Q 신호 합성기와 ECL 신호 분배기로 구성 된다. RAC은 데이터 수신 카드(Data Receiving Card, DRC)와 소프트웨어인 ST2RAS(STSAT-2 Receiving and Archiving Software, ST2RAS)로 구성된다. X 대역 수신기를 통해서 수신된 I, Q 데이터는 DCE를 통해서 I&Q 데이터로 합성된다. 합성된 데이터는 데이터 수신 카드를 통해서 수신 저장 컴퓨터의 RAID(Redundant Array of Inexpensive Disk)에 저장되고, 이 데이터는 ST2RAS의 전처리를 통해서 위성의 상태 정보와 탑재체 정보로 분리된다. 탑재체데이터 수신시스템에 대한 기능 시험과 열진공 시험을 통해서 10??의 BER(Bit Error Rate) 요구사항을 만족하는 결과를 확인하였다. This paper describes the design and implementation of PFM(Proto Flight Model, PFM) of DRE(Data Receiving Equipment, DRE) for Science and Technology Satellite 2(STSAT-2) and the results of integration performance test. DRE components are X-band receiver, DCE(Data Combine Equipment, DCE) and RAC(Receiving and Archiving Computer, RAC). DCE consists of I&Q data combiner and ECL signal distributor. RAC consists of DRC(Data Receiving Card) and ST2RAS(STSAT-2 Receiving and Archinving Software). X-band receiver receives 10Mbps QPSK I, Q satellite data and sends the data to DCE. DRC stores the I&Q combine data from DCE to RAID. The pre-processing program sorts and stores to satellite status data and payload data. The performance of DRE in the functional and space environments test satisfies the requirements of STSAT-2.
이종주(Jong-Ju Lee),정창용(Chang-Yong Jeong),백주원(Ju won Beack),유동욱(Dong-Wook Yoo),이영운(Young-Woon Lee),안창모(Chang-Mo Ahn),안호균(Ho-Gyun Ahn) 전력전자학회 2000 전력전자학술대회 논문집 Vol.2000 No.11
본 논문은 대용량에 적합한 직ㆍ병렬 구조를 가지는 공진형 고압 DC 전원장치에 대한 것이다 이 장 치는 전력소자 CIGBT) 가 스위칭 할 때 발생하는 스위칭 손실과 EMI를 감소시키기 위해서 UC3879를 이용한 영전압 스위칭 (ZVS; Zero Voltage Switching) 방식을 채택하였고, 영전압 스위칭 위상차 제어 직혈 공진형 (ZVS PCS-SRI; ZVS Phase Shifted Control Series Resonant Inverter) 으로 동작 시켜 고압변압기의 누설 인덕터와 기생 캐패시터를 이용하여 승압이 효과적으로 일어나도록 하였다. 또 한 고압부는 입력과 출력부분이 각각 병렬과 직렬로 구성되어 있어서 각각의 모듈이 독립적인 ZVS가 일어나도록 하여 대용량화가 용의 하도록 하였다 본 논문에서 10kV /60kW 급의 대용량 고압 DC 전원 창치를 구성하여 이를 증명하였다.