http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김근민,황의환,조재오,이상래 대한구강악안면방사선학회 2001 Imaging Science in Dentistry Vol.31 No.2
The ameloblastic carcinoma is an extremely rare, aggressive odontogenic neoplasm of the jaws. It is described as an ameloblastoma in which there is histologic evidence of malignancy in the primary or recurrent tumors, regardless of whether it has metastasized. We report an aggressive case of ameloblastic carcinoma of the mandible. A 68-year-old man with the complaint of the left facial swelling and intermittent pain was referred to our hospital. Serial images of panoramic radiograph, computed tomograph, and magnetic resonance imaging showed an ill-defined destructive radiolucent lesion of the left mandible. The lesion had typically aggressive behavior with extensive local destruction of bone and extended to the adjacent soft tissues. Bone scan revealed increased uptakes in the left mandibular body and ramus regions. Histological features were generally resembled with those of an ameloblastoma but with cytologic features of epithelial malignancy. (Korean J Oral Maxillofac Radiol 2001;31:109-15)
측두하악관절 내장증시 측방 개별화 보정단층방사선사진에서의 하악과두의 위치
김근민,황의환,이상래,Kim Keun-Min,Hwang Eui-Hwan,Lee Sang-Rae 대한영상치의학회 2002 Imaging Science in Dentistry Vol.32 No.2
Purpose: To examine the possible relationship between condylar position and disk displacement in the temporomandibular joint. Materials and Methods: 79 temporomandibular joints in 40 patients having temporomandibular disorders were classified into three categories: no disk displacement (NDD) , disk displacement with reduction (DDWR), and disk displacement without reduction (DDWOR). Disk positions were assessed from clinical and MRI findings. The relationship between the three categories and condylar positions was evaluated using lateral individualized corrected tomography. Results: Clinical findings regarding the relationship between condyle and disk positions having anterior, centric, and posterior positions were 27%, 27%, and 46%, respectively, in NDD, 43%, 17%, and 40%, respectively, in DDWR, and 44%, 22%, and 34%, respectively, in DDWOR. There were no significant differences in condylar positions between each of the groups (P>0.05). In the relationship between condyle and disk positions with MRI findings, anterior, centric, and posterior positions were 38%, 38%, and 24%, respectively, in NDD, 29%, 21%, and 50%, respectively, in DDWR, and 44%, 9%, and 47% respectively, in DDWOR. There were significant differences in the condylar positions when MRI was utilized (P<0.05) Conclusion: There was a significant correlation between the condyle and disk positions with MRI findings on lateral individualized corrected tomography.
비정상 충돌 분류의 Cavity 형상에 따른 공간 농도 분포 및 거동해석
이상석,김근민,김봉곤,정성식,하종률 한국액체미립화학회 1996 한국액체미립화학회지 Vol.1 No.2
In case of a high-speed D.I. diesel engine, the injected fuel spray is unavoidable that the impinging on the wall of piston cavity and in this case the geometry of piston cavity has a great influence on the atomization structure and air flow fields. In the field of combustion and in many other spray applications, there are clear evidence of correlation between spray structure and emission of pollutants. Ordinary, the combustion chamber of driving engine have unsteady turbulent flow be attendant on such as the change of temperature, velocity and pressure. So the analysis of spray behavior is difficult. In this study, a single spray was impinged on each cavity wall at indicated angle in a quiescent atmosphere at room temperature and pressure, as being the simplest case, and 3 types of piston cavity such as Dish, Toroidal and Re-entrant type was tested for analyzing the influence of cavity geometry. And hog wire probe was used for analyze non-steady flow characteristics of impinging spray, and to investigate the behavior of spray, the aspects of concentration c(t), standard deviation σ (t) and variation factor (v.f.) was measured with the lapse of time.
이상석(Lee S S),김근민(Kim K M),김봉곤(Kim B G),정성식(Jung S S),하종률(Ha J Y) 한국자동차공학회 1995 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1995 No.11_2
In this study. to more percisely and systematically analyze the process of combustion of the impinging spray. Helium spray was impinged on the 3 types of piston cavity geometry into the quiescent atmosphere with a room temperature and pressure to simplify the state of the real combustion chamber and hot wire probe was used for analyze non-steady flow characteristics of impinging spray. and ensemble average technique method was used for data process. and consequently re-entrant type has larger entrainment then others and vortex appear at the sperical region.<br/>
이승재,허성호,진승원,이종민,윤희정,이희연,김근민,박철홍 대한심장학회 2008 Korean Circulation Journal Vol.38 No.6
Coronary artery fistula (CAF) is a rare form of congenital anomalies of the coronary arteries, and this is usually discovered by chance during coronary angiography. However, this type of fistula can cause important coronary morbidity and mortality leading to angina, syncope, congestive heart failure, myocardial infarction and sudden death. Bilateral CAFs are even rarer, and especially when combined with valvular heart disease. The coincidence of CAF with aortic regurgitation is relatively rare and this might sometimes cause myocardial ischemia. We present here a case of bilateral coronary-pulmonary artery fistulas that arose from the first diagonal branch of the left anterior descending artery and the conal branch of the right coronary artery combined with severe aortic regurgitation, and this all caused myocardial ischemia Coronary artery fistula (CAF) is a rare form of congenital anomalies of the coronary arteries, and this is usually discovered by chance during coronary angiography. However, this type of fistula can cause important coronary morbidity and mortality leading to angina, syncope, congestive heart failure, myocardial infarction and sudden death. Bilateral CAFs are even rarer, and especially when combined with valvular heart disease. The coincidence of CAF with aortic regurgitation is relatively rare and this might sometimes cause myocardial ischemia. We present here a case of bilateral coronary-pulmonary artery fistulas that arose from the first diagonal branch of the left anterior descending artery and the conal branch of the right coronary artery combined with severe aortic regurgitation, and this all caused myocardial ischemia