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치주적으로 불리한 소수 잔존치에서 하이브리드 텔레스코픽 이중관 국소의치를 이용한 임상증례
서장원,이청희,Seo, Jang-Won,Lee, Cheong-Hee 대한치과보철학회 2019 대한치과보철학회지 Vol.57 No.1
소수 잔존치의 부분 무치악 환자들에 있어 이중관을 이용한 치료의 성공적인 결과에 대해 여러 논문에서 보고되고 있다. 특히 이중관을 이용한 가철성 국소의치는 잔존치의 치주 상태가 좋지 않고 클라스프 유지 가철성 국소의치가 실패할 가능성이 있는 경우(crown/root ratio > 1) 대체적인 치료가 될 수 있다. 본 증례에서는 상하악 양측 구치부 상실과 전반적인 치아 동요로 인하여 저작의 어려움을 주소로 내원한 환자에서 심한 치주질환으로 다수의 치아 발치 후 하악은 전치부 고정성 수복과 자연치의 구강형성을 통해 Kennedy class I 가철성 국소의치로 치료 계획을 하였고 상악은 클라스프 유지 가철성 국소의치로 수복하기에 예후가 불분명하여 프릭션 핀을 이용한 하이브리드 텔레스코픽 이중관 국소의치로 치료를 계획하였다. 이와 같이 보철 치료 완료 후 환자는 잘 적응 하였으며 발음, 저작, 유지, 심미적으로 만족하는 결과를 얻었기에 이 증례를 보고하는 바이다. The successful results of the treatment using a double crown denture have been reported in several papers for some of the few remaining teeth in patient. In particular, double crown dentures may be an alternative to treatment in cases where the periodontal status is poor and clasp type removable partial dentures are inappropriate (crown/root ratio > 1). In this case, the patient visited clinic with a chief complaint of difficulty in mastication due to loss of posterior teeth and overall teeth mobility. After teeth with severe periodontitis were extracted, treatment plan of mandible is Kennedy class I removable partial denture (RPD) and treatment plan of maxilla is hybrid telescopic double crown RPD with a friction pin. Patient is well adapted after the prosthetic treatment and we report due to achieving satisfactory results in pronunciation, mastication, retention and aesthetics.
직화구이 음식점 방지시설의 오염물질 저감 효과 평가 - 전기집진방식을 중심으로 -
서장원,김영일,이희선,김지훈,김영두,신진호,Seo, Jang-Won,Kim, Young-Il,Lee, Hee-Sun,Kim, Ji-Hun,Kim, Young-Doo,Shin, Jin-Ho 한국입자에어로졸학회 2021 Particle and Aerosol Research Vol.17 No.4
The emission gas from meat grilled restaurants has unpleasant odor and sticky particulate matters (PM) in form of oil mist. This affects the residents living nearby. In oder to decrease the odor and PM, electrostatic precipitators (ESP) were installed at several restaurants by support of Seoul metropolitan government and emission characteristics of PM and odor were investigated. The removal efficiency of odor and PM at before- and after-ESP was that total hydrocarbon (THC), NH<sub>3</sub>, H<sub>2</sub>S, acetaldehyde, butyraldehyde were not much decreased. Total suspended particles (TSP) emitted from the vent was below the value of 7 mg/m<sup>3</sup> regardless of the concentration of before-ESP and removal efficiency was in the range of 64 ~ 86%. The ratio of PM<sub>1.0</sub> to PM<sub>10</sub> of emission gas was over 0.9. So it was revealed that most PM of emission gas was PM1.0. The PM concentration in the air of the street near the vent was higher than another street due to the emission gas and the PM of indoor air of restaurant grilling meats was measured very high compared to outdoor air. So it needs more powerful ventilation of indoor air.
Dynamic Contour Tonometry와 골드만 압평 안압계의 비교
서장원,신동민,노세현.Jang Won Seo. MD. Dong Min Shin. MD. Sae Heun Rho. MD 대한안과학회 2009 대한안과학회지 Vol.50 No.2
Purpose: To compare dynamic contour tonometry (DCT) and Goldmann applanation tonometry (GAT) and investigate the influence of central corneal thickness (CCT) onintraocular pressure. Methods: In a prospective study of 165 eyes with glaucoma (135 eyes), glaucoma suspect (14 eyes), and ocular hypertension (16 eyes), intraocularpressure was measured with DCT and GAT, and followed by measurement of the CCT with ultrasound pachymetry. Statistical analysis were performed with simple linear regression analysis and t-test using SPSS (Statistical software, ver. 10; SPSS Inc., Chicago, IL). Results: A clear correlation between DCT and GAT was found (r =0.733, p<0.001). The average intraocular pressure was 14.92±2.28 mmHg with DCT and 13.97±3.12 mmHg with GAT, and the intraocular pressure with DCT was 0.95±2.49 mmHg higher than with GAT. A meaningful correlation was shown between GAT and CCT (r2=0.145, p<0.001), but was not demonstrated between DCT and CCT (r2=0.012, p=0.081). In addition, the difference of intraocular pressure between GAT and DCT (GAT-DCT) showed a significant correlation with CCT (r2=0.145, p<0.001). Conclusions: DCT appears to be a reliable method for intraocular pressure measurement, which is not influenced by CCT, unlike GAT.
VLIW 시스템에서의 최소 시간 지연을 갖는 효율적인 병렬 파이프라인 알고리즘
서장원,송진희,류천열,전문석,Seo, Jang-Won,Song, Jin-Hui,Ryu, Cheon-Yeol,Jeon, Mun-Seok 한국정보처리학회 1995 정보처리논문지 Vol.2 No.4
This pater describes pipelining algorithm issues for a VLIW(Very Long Instruction Word) System and the effective pipelined processing method by occurrence in pipelined management of processor minimized to timing delay. The proposed algorithm is executed in pipeline and parallel processings, and by combining basic operations variable instruction set can be desinged for various applications. In this paper, we prove and analyze the efficiency of the proposed pipeline algorithm and compare with other processor pipeline algorithm in terms of time minimizing. 본 논문은 VLIW(Very Long Instruction Word) 시스템에 대한 파이프라이닝 알고리 즘 문제와 파이프라인 처리에서 발생되는 시간 지연을 최소화할 수 있는 효율적인 파 이프라인 처리 방법에 대해 서술하였다. 제안된 알고리즘은 병렬로 수행하면서 병렬 파이프라인 처리되며, 기본 오퍼레이션의 조합으로 응용 목적에 따라 다양한 기능을 수행하는 명령어의 설계가 가능하다. 본 논문에서는 프로세서의 파이프라인 알고리즘 효율성과 제안된 방법에 의해 시간 지연이 최소화됨을 다른 파이프라인 방법과의 비교 분석을 통해 증명해 보인다.
유리체내 베바시주맙 주사술 후 발생한 HLA‐B27 양성 급성 전방 포도막염 1예
서장원,권윤형,Jang Won Seo,MD,Yoon Hyung Kwon,MD 대한안과학회 2013 대한안과학회지 Vol.54 No.12
Purpose: Intravitreal injection of bevacizumab (Avastin<SUP>®) can lead to several intraocular complications including endophthalmitis, hemorrhage and inflammation. We present one case of acute anterior uveitis with hypopyon in an HLA-B27(+) patient following intravitreal injection of bevacizumab.<br /> Case summary: A 40-year-old male with known central retinal vein occlusion presented with redness and decreased visual acuity in the left eye. Symptoms had developed 4 days earlier after the sixth intravitreal injection of bevacizumab in that eye. The patient had a marked anterior chamber reaction with hypopyon and posterior synechiae. Nine days after onset, similar symptoms in the left eye occurred in the uninjected right eye. Through examination and clinical manifestations, we diagnosed acute anterior uveitis associated with HLA-B27 positivity. The patient was treated with 1% prednisolone acetate, 0.5% moxifloxacin and 1% atropine in both eyes and all symptoms had resolved after 6 weeks.<br /> J Korean Ophthalmol Soc 2013;54(12):1945-1949
서장원(Jang Won Seo),김동림(Dong Lim Kim),손형선(Hyung Sun Sohn) 대한피부과학회 1990 대한피부과학회지 Vol.28 No.6
We report a case of generalized plane xanthoma which showed no-rmolipoproteinemia and was not associated with unerlying disorders or other type of xanthomas. A 48-year-old female has noticed well defined, slightly elevated, yellowish plaques which occurred on the periorbital areas, sides of the neck, scapular areas, anterior chest, buttocks and lower extremities for 3 years. Biopsy specimen taken from the neck showed perivascular accumulations of foam cells in the upper and mid dermis. Paper electrophoresis didn't, show elevation of any lipoprotein. (Kor J Dermatol 28(6):794 798, 1990)