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전안면골 외상 환자에서 턱밑 기관내 삽관에 대한 증례보고
서동준,김남균,박세현,강연희,이성진,김형준,Seo, Dong-Jun,Kim, Nam-Kyun,Park, Se-Hyun,Kang, Yeon-Hee,Lee, Sung-Jin,Kim, Hyung-Jun 대한악안면성형재건외과학회 2008 Maxillofacial Plastic Reconstructive Surgery Vol.30 No.6
턱밑 기관내 삽관술은 기본적인 수술적 술기가 필요하지만, 간단하고 안전하며 술식이 빠른 장점을 가지고 있다. 또한 술 중 악간 고정이 가능하며, 수술 시야를 확보할 수 있으며, 술 후 합병증이 적고 기관절개술로 인한 부작용을 줄일 수 있다는 장점을 가지고 있다. 따라서 기본적인 술기의 습득과 마취과와의 협조가 동반된다면 많은 분야에서 사용 될 수 있는 방법이라고 생각된다. The technique of submental intubation in patient with multiple facial fracture and skull base fracture was originally described by Altemir. Not only is intermaxillary fixation feasible when using this surgical technique but a good field of vision is acquirable, and postoperative complications due to tracheostomy can be prevented. After Altemir presented submental intubation, many modified techniques were reported, applicable not only to trauma patients but also to elective surgeries such as orthognathic surgery including Lefort II or III osteotomy. This technique is easy to use, rapid and free of complications compared to alternative intubation method especially tracheostomy for multiple facial trauma patients.
식용 갈색거저리 유충에서 분리한 키틴으로부터 Serratia marcescens PRNK-1에 의한 N-아세틸글루코사민의 생산
서동준 ( Dong-jun Seo ),문채영 ( Chaeyeong Moon ),송용수 ( Yong-su Song ),최승희 ( Seung-hee Choi ),한연수 ( Yeon Soo Han ),조용훈 ( Yong Hun Jo ),노미영 ( Mi Young Noh ),정우진 ( Woo-jin Jung ) 한국키틴키토산학회 2017 한국키틴키토산학회지 Vol.22 No.3
S. marcescens PRNK-1로부터 얻어진 키틴분해 조효소와 식용 갈색거저리 유충으로부터 얻어진 콜로이달 키틴의 산업적 활용에 대하여 연구하였다. 식용 갈색거저리로부터 얻어진 키틴의 형태는 게 껍질에서 확인된 α-form 형태임을 X-ray 회절분석법과 FT-IR 분석법을 통하여 확인하였다. 게 껍질과 식용갈색거저리를 이용하여 제조한 콜로이달 키틴을 기질로 하여 S. marcescens PRNK-1로부터 얻어진 키틴분해 조효소와 반응한 결과 식용 갈색거저리 키틴에서 더 높은 함량의 N-아세틸글루코사민을 생성함을 확인하였다. 식용 갈색거저리 유충으로부터 얻어진 콜로이달 키틴이 S. marcescens PRNK-1로부터 얻어진 키틴분해 조효소와 반응하여 N-아세틸글루코사민 생산을 확인함으로써 산업적으로 응용 가능성이 매우 높을 것으로 기대된다. In this study, crab shell chitin and Tenebrio molitor larva (Mealworm) chitin were characterized by X-ray diffraction and FTIR analysis. From the X-ray diffraction results, α-form chitin was observed four crystalline reflections, shown at 9.4°, 19.3°, 20.8°, and 23.3° in crab shell chitin, and at 9.44°, 19.3°, 20.7°, and 23.3° in mealworm chitin by crystalline structure. From the FT-IR spectra results, α-form chitin showed doublet at amide I band in both crab shell chitin and mealworm chitin. Manufacturing process of colloidal chitin from mealworm was conducted with acid, alkali, and decoloration and then adjusted at pH 6~7 with 70% ethanol. Degradation pattern of colloidal chitin from crab shell and mealworm was investigated after reaction of chitinase-producing bacterium Serratia marcescens PRNK-1 by TLC and HPLC. Production of N-acetyl-glucosamine showed rapidly at 3 hr after reaction with crab shell and mealworm colloidal chitin and crude enzyme of S. marcescens PRNK-1 on TLC plates. N-acetyl-glucosamine was produced by 5,041.3 ppm and 5,319.8 ppm at 3 days in crab shell colloidal chitin and in mealworm colloidal chitin, respectively, after reaction with crude enzyme of S. marcescens PRNK-1. Our results indicate that the colloidal chitin obtained from mealworm could be used as useful industrial resources at production of N-acetyl-glucosamine.
세그멘테이션 라벨링 없는 최소 전처리를 통한 AI 의료 영상에서의 다 질병 진단 효율화
서동준 ( Dong-jun Seo ),이승찬 ( Yoon-jung Heo ),허윤정 ( Seung-chan Lee ),원일용 ( Il-yong Won ) 한국정보처리학회 2023 한국정보처리학회 학술대회논문집 Vol.30 No.2
AI 의료 영상 분석 기술은 의료 분야의 인력 부족 문제를 해결하는 방법으로 주목받고 있다. 이전 연구들은 세그멘테이션 라벨링과 질병 유무를 결합하여 판단하는데, 이 방법은 큰 비용과 시간이 소요된다. 본 논문은 의료 전문가의 세그멘테이션 라벨링 없이 병명 라벨만의 학습으로 질병을 어느 정도 진단할 수 있음을 보인다. 실험에 따르면 의미있는 결과를 확인할 수 있었다.
구강내 연조직 결손부 재건시 유리 전완 피판(Radial Forearm Free Flap)의 유용성
김남균,서동준,박세현,김형준,차인호,남웅,Kim, Nam-Kyun,Seo, Dong-Jun,Park, Se-Hyun,Kim, Hyung-Jun,Cha, In-Ho,Nam, Woong 대한악안면성형재건외과학회 2008 Maxillofacial Plastic Reconstructive Surgery Vol.30 No.4
Purpose: The purpose of this clinical retrospective study was to evaluate our experience of radial forearm free flap for reconstruction of the oral cavity. Material and methods: From 1997 to 2006, 50 radial forearm free flaps were employed for head and neck reconstruction in 50 patients at department of oral and maxillofacial surgery, Yonsei University, Korea. Data were obtained from chart review, and clinical follow-up. Results: Patients' age ranged from 26 to 82 years (mean 53.2). There were 39 men and 11 women. 43 of the 50(86%) patients had squamous cell carcinoma. The total flap survival were 47(94%), complication rate were revealed for 15(30%). Conclusion: In the reconstruction of soft tissue within the oral cavity, several free flaps have been used. Because of its constant anatomy, long pedicle allows a hypothetic vascular anastomosis in the contralateral neck, contourability for various type of oral defects, pliability and can be used simultaneous reconstruction in intraoral and extra oral defects, the radial forearm free flap constitutes one of the best choice of intraoral soft tissue reconstruction.
친환경 광역단지 내 젤라틴·키틴분해미생물을 이용한 유기 벼 생산
최승희,차광홍,서동준,박흥규,권오도,안규남,이재학,김길용,정우진,Choi, Seung-Hee,Cha, Kwang-Hong,Seo, Dong-Jun,Park, Hung-Gyu,Kwon, Oh-Do,An, Kyu-Nam,Lee, Jai-Hak,Kim, Kil-Yong,Jung, Woo-Jin 한국유기농업학회 2018 韓國有機農業學會誌 Vol.26 No.4
1. 유기재배구의 토양조건은 배수가 약간 불량한 미사질 양토인 전북통 보통답으로 유효규산이 높은 것을 제외하고는 우리나라 논토양의 화학적 성분과 평균 함량이 유사하였다. 2. 관행재배구와 유기재배구 간에 생육은 초장, 분얼수, 이삭수, 이삭길이 모두 관행재배구에서 높은 것을 확인하였으며 이삭당 입수와 등숙율은 유기재배구에서 다소 높게 나타났다. 3. 병해충 발생정도는 물바구미, 잎집무늬마름병, 혹명나방, 도열병이 유기재배구에서 많이 발생하였고, 이삭누룩병은 관행재배구에서 조금 더 많이 발생하였다. 4. 주요 관리대상 병해충인 잎집무늬마름병(y=-0.2848x+199.57, $R^2=0.704^*$), 혹명나방 발생(y=-0.1361x+92.535, $R^2=0.8049^*$)과 쌀 수량과의 관계에서 유의성이 높은 부의 상관관계가 나타났다. 5. 백미 품질은 유기재배구에서 파쇄미의 증가로 완전립 비율이 낮았지만, 단백질함량이 관행재배구에 비해 낮아 전반적인 품질 및 윤기치가 높아졌다. 6. 쌀 재배 순수익은 관행재배구에서 36만원/10a, 유기재배구에서 61만원/10a로 유기재배구의 순수익이 68% 높게 나타났다. This study was carried out to investigate the economic value of organic rice production using gelatin chitin microorganisms in eco-friendly complex, Gongsan, Naju city. The soil condition of experiment paddy field was Jeonbuk series and silt loam with a slightly poor drainage. Except for the high effective silicate, the chemical characteristics of soils used were included in the optimum range of paddy soils in Korea. In growth, plant length, tiller number, ear number, and ear length were observed to be higher in conventional paddy fields than organic paddy fields. However, number of grain per panicle and grain filling ratio (%) were higher in organic paddy fields than conventional paddy fields. Incidences of diseases and insect pests were slightly higher in the organic paddy fields. Water weevil, sheath blight, rice leaf roller and rice blast were more occurred in organic paddy field. On the other hand, false smut was higher occurred in conventional paddy field. There was a significant negative correlation between rice sheath blight and rice leaf roller, and rice yield. In the milled rice quality, the quality of organically cultivated milled rices was lower by the increase of broken rice than that of conventionally cultivated milled rices. The quality and palatability of rice were higher in organic cultivation with decreasing of protein content. Net income of conventionally and organically cultivated rice was 360,000 won/10a and 610,000 won/10a, respectively. Premium net income of the organically cultivated rice was 68%.
소아의 하악골을 침범한 랑거한스세포 조직구 증식증의 임상적 고찰
강연희,박세현,서동준,차인호,이충국,김현실,김진,김형준,Kang, Yeon-Hee,Park, Se-Hyun,Seo, Dong-Jun,Cha, In-Ho,Yi, Choong-Kook,Kim, Hyun-Sil,Kim, Jin,Kim, Hyung-Jun 대한악안면성형재건외과학회 2008 Maxillofacial Plastic Reconstructive Surgery Vol.30 No.6
Langerhans cell histiocytosis (LCH) is characterized by proliferation of pathological Langerhans cells within different organs. It mainly affects children, but adult cases also occur, with an incidence rate of one to two per million. LCH results from the clonal proliferation of Langerhans cells. And its etiopathogenesis is still unknown. The hypothesis that it is a neoplastic or inflammatory disease, as well as the existence or not of immunological, viral or genetic predisposing factors, has been widely discussed in the literature, but no conclusive proof has ever been provided. Although lesions may appear in tissues of various origins such as skin, hypothalamus, liver, lung, or lymphoid tissue, bone is the most common site of the disease. The head and neck are affected in almost 90% of cases. The maxillary and mandibular bones are affected in 5 to 10% of cases. In our report, we present four cases of LCH in patients aged 3, 4, 7 and 9 years respectively, with primary manifestation in maxillofacial area.