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김성환,황성오,이강현,조준휘,강구현,문중범,이승환,윤정한,최경훈,김영식 대한응급의학회 2000 대한응급의학회지 Vol.11 No.3
Background: The aim of this study was to determine whether the conventional subcostal approach is suitable for emergency pericardiocentesis in patients with cardiac tamponade or impending cardiac tamponade. Methods: This study was a prospective, observational study conducted at the emergency department of a tertiary hospital, Patients who had symptomatic pericardial effusion and who needed emergency pericardiocentesis in the emergency department were included in this study. We measured the epicardium-to-pericardium distance at the subcostal, parasternal, and apical area with two-dimensional echocardiography to determine the appropriate puncture site for pericardiocentesis. An epicardium-to-pericardium distance of more than 1.0 cm was considered as the primary safety factor in determining the Puncture site for pericardiocentesis. The skin-to-pericardium distance was considered as secondary safety factor. Results: Ninety-five consecutive patients(55 males and 40 females; total mean age: 53 year old) with cardiac tamponade or impending cardiac tamponade were enrolled in this study. The puncture site for pericardiocentesis, as determined by echocardiography, was the subcostal area in 43 patients(45%), the apical area in 40 patients(42%), the left parasternal area In 11 patients(12%), and the right parastemal area in one patient(1%). Pericardiocentesis failed in 2 patients(2%) with the subcostal approach and in one patient(1%) with the apical approach. The average epicardium-to-pericardium distance was 31 ±21 mm in patients with the subcostal approach and 21±8 mm in patients with other approaches. There were no differences in the amount of pericardial fluid and in the intraperical pressure among patient groups according to puncture site. There were two procedure related complications: a puncture of the right ventricle with the subcostal approach and a ventricular tachycardia with the apical approach.
개 비장 질환의 미세세침흡입술을 통한 세포병리학 검사 4례
김현아,윤기영,최호정,정성목,이영원,조성환,박성준 忠南大學校 獸醫科大學 附設 動物醫科學硏究所 2011 動物醫科學硏究誌 Vol.18 No.1
To evaluate the accuracy and diagnostic significance of cytopathological diagnosis of canine splenic disorders, cytopathological examination throgh fine-needle aspiration(FNA) referred to Veterinary Medical Teaching Hospital of Chungnam National University were retrospectived. Splenic neoplasm, hemolymphatic neoplasm, hyperplasia, extramedullary hematopoiesis and splenitis were diagnosed canine splenic disorders through cytopathological examination. The patient should be identified what coagulation profile are normal before aspiration, because complication such as hemorrhage could happen. The 4 cases were identified symmetric, asymmetric splenomegaly on abdominal ultrasonography and then were performed ultrasound-guided FNA. The 4 cases were diagnosed hemangiosarcoma(2), hyperplasia(1) and extramedullary hematopoiesis(1) by clinical signs, hematological examination, and cytopathological examination. Cytopathological examination through FNA was cost-effective, no gneral anesthesia, no complication, and non-invasive method of diagnosis for canine splenic disorders.
백강현,윤기영,최호정,정성목,이영원,조성환,박성준 忠南大學校 獸醫科大學 附設 動物醫科學硏究所 2011 動物醫科學硏究誌 Vol.18 No.1
Fine needle aspiration(FNA) cytology is considered as the diagnostic technique of choice in the assessment of swellen lymph nodes. The aim of this study is to determine the indication and diagnostic method of FNA of lymph node lesions performed at Veterinary Medicine Teaching Hospital of Chungnam National University. The records of 16 patients which had undergone FNA during the study period were retrieved. The cytological results were classified as lymphadenitis, lymphoid hyperplasia and lymphoma. Lymphoma cases were classified as B-cell origin and T-cell by immunophenotyping. The result of the FNA cytological diagnosis showed that nine (56%) of the patients were lymphoma, five (31%) of the patients were lymphoid hyperplasia and two (13%) of the patients were lymphadenitis.
최정태,안무업,안희철,최영미,정재봉,서정열,유기철,이삼우,박석현,조준휘,김성환,김아진,송근정 대한응급의학회 2001 대한응급의학회지 Vol.12 No.4
Purpose : This study was conducted to develop field triage, transportation, distribution, and prehospital care at a fire disaster by analyzing the victims of the fore that broke out at a bar in Incheon. Method : We analyzed the cases of the victims of a fire in Incheon in Oct. 1999. We determined the primary care hospital, the arrival time, the burn size, the outcome, and the injury type from the medical records, the concerned organ records, and interviews with concerned persons. Result : The total number of victims was 137: 56 prehospital deaths, 1 hospital death, and 80 survivals. The Pearson correlation coefficient between the burn size and the severity was -0.175. There were 121(89.6%) cases of inhalation injury, 59 (43.7%) cases of flame burns, 66 (48.9%) cases of hypoxic brain damage, and 16 (11.9%) cases involving other types of injury. Conclusion : The causes of death of the fire victims were inhalation injury and hypoxic brain damage due to CO poisoning and other toxic inhalants. We propose the use of a simple triage and rapid treatment(START) system and a reassessment the delayed category in fire disasters.
Recurrent, Non-wandering and Chain Recurrent Point for Maps of the Interval
Cho,Eui Whan,Cho,Seong Hun 明知大學校 自然科學硏究所 1987 자연과학논문집 Vol.5 No.-
유계인 폐구간에서 정의된 연속인 함수f에 대하여 주기점, 순환점, 비방항점, 연쇄순환점들의 집함을 각각 P(f), R(f), NW(f), CR(f)로 나타낼때 일반적으로 P(f)⊂R(f)⊂NW(f)⊂CR(f)이다. 본 논문은 P(f)가 폐집합이면R(f)=P(f), NW(f)=P(f) CR(f)=P(f)임을 보인다. For a continuous map f of a compact interval into itself, we show that if the set of periodic points of f is a closed set then the recurrent set, the non-wandering set and the chain recurrent set are periodic.
조성식(Seong-Sik Cho),이성환(Seong-Whan Lee) 한국정보과학회 2009 정보과학회논문지 : 소프트웨어 및 응용 Vol.36 No.12
수화 적출이란 연속된 영상에서 수화의 시작과 끝점을 찾고, 이를 사전에 정의된 수화 단어로 인식하는 방법을 말한다. 수화는 매우 다양한 손의 움직임과 모양으로 구성되어 있고, 그 변화가 다양하여 적출에 많은 어려움이 있다. 특히, 다양한 길이의 궤적 정보로 구성된 수화는 길이가 긴 수화에 대해 짧은 길이를 갖는 수화가 인식에 필요한 정보를 추출하기 어려운 문제점 있다. 본 논문에서는 다양한 길이를 갖는 입력 데이터의 특징을 반영할 수 있는 Semi-Markov Conditional Random Field에 기반하여 다양한 수화의 길이에 강인하게 수화를 적출하는 방법을 제안한다. 성능 평가를 위해 미국 수화와 한국 수화 데이터베이스를 사용하여 연속된 수화 영상에서의 수화 적출 성능을 평가하였고, 실험 결과 기존의 Hidden Markov Model과 Conditional Random Field보다 뛰어난 성능을 보였다. Sign language spotting is the task of detecting the start and end points of signs from continuous data and recognizing the detected signs in the predefined vocabulary. The difficulty with sign language spotting is that instances of signs vary in both motion and shape. Moreover, signs have variable motion in terms of both trajectory and length. Especially, variable sign lengths result in problems with spotting signs in a video sequence, because short signs involve less information and fewer changes than long signs. In this paper, we propose a method for spotting variable lengths signs based on semi-CRF (semi-Markov Conditional Random Field). We performed experiments with ASL (American Sign Language) and KSL (Korean Sign Language) dataset of continuous sign sentences to demonstrate the efficiency of the proposed method. Experimental results show that the proposed method outperforms both HMM and CRF.