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심윤택,엄나현,이영만,김성호,현진영,이경미 대한법의학회 2023 대한법의학회지 Vol.47 No.4
This study aimed to explore the use of three-dimensional reconstructed computed tomography images of the adult humerus for forensic anthropological sex estimation in the Korean population. In forensic anthropology, the skull and pelvic bone show high accuracy in sex estimation; however, when they are impaired, other bones should be available for sex estimation. Six hundred images of the right and left humerus pair were used. A logistic regression analysis was performed by measuring the volumes of 500 images and the remaining 100 images were used in the metric sex estimation. Both the logistic regression and metric measurements were performed separately on three regions of the right and left humerus: the head, mid-shaft, and digital regions, The accuracy of sex estimation in the right humerus was 93% (91% for men and 96% for women), 92% (93% for men and 91% for women), and 87% (85% for men and 89% for women) for the head, mid-shaft, and digital regions, respectively. Sex estimation accuracy in the left humerus was 92% (89% for men and 96% for women), 93% (96% for men and 89% for women), and 91% (91% for men and 91% for women) for the head, mid-shaft, and digital regions, respectively. These results contribute to high accuracy and reliability in sex estimation using three-dimensional images of the humerus in Koreans, whereas the two-dimensional metric method provided limited information on bone measurements.
한국인 머리뼈의 3차원 영상을 이용한 성별판별: 비계측적 연구
심윤택,정예훤,김이석,엄나현,최승규,오세민,박지환,김동영,구형남 대한법의학회 2021 대한법의학회지 Vol.45 No.3
This study performed the forensic anthropological sex estimation of Koreans in a non-metric way by reconstructing three-dimensional (3D) computed tomography (CT) images of skulls. The skull CT images used in this study were 100 (51 males, 49 females), and all CT images were taken with a slice thickness of 0.75 mm and then reconstructed into 3D images using the MIMICS 23.0 program. Using the reconstructed 3D image, measurements were repeated twice. The sex determination was male if the 4 point to 5 point was relatively more in five landmarks, and female if the points of 1 to 2 were relatively more. Results of the study show that, 88 of the 100 cases matched the actual sex. Among the 12 discrepant cases, ten cases were mismatched with the actual sex even though the estimation and repeated estimation readout of sexestimating were the same. Two cases, were “unknown,” showing different sexes in the first and repeated estimations. In conclusion, this study indicated that a forensic anthropological analysis from 3D images provided accurate point information on the landmarks of skulls, showing as high an accuracy as the sex estimation method using real bones. The ten cases of sex mismatch, except the two “Unknown” cases, are considered to be errors that did not consider differences in population groups. In further studies, further establishing a nonmetric, specifically Korean methods to increase the accuracy and reliability of sex estimation is need.
운동생리학 : 다양한 운동형태의 일회성 운동이 혈장량과 혈중 지질 및 지단백 콜레스테롤에 미치는 영향
심윤택(SimYunTaeg),김광희(KimGwangHui),박동호(ParkDongHo),김도윤(KimDoYun) 한국체육학회 2003 한국체육학회지 Vol.42 No.5
Acute plasam volume change(PVC) and high-density lipoprotein (HDL), triglyceride(TG), total cholesterol(TC), low-density lipoprotein (LDL), and very low-density lipoprotein (VLDL) changes were determined in 18 healthy college aged-men completing three-counterbalanced running trials at different exercise intensities: trial 1 at 50%LT, trial 2 at 100%LT intensity and 75%LT intensity. For each trial, blood samples were collected at pre-exercise (baseline), immediately post-exercise (PE), 24 hours(24h) and 48 hours post-exercise. Serum samples were analyzed for HDL, LDL, VLDL, TC, and TG. In addition, capillary blood samples were collected for analysis of blood lactate concentrations during incremental test to determine LT. All samples were corrected for plasma volume changes and compared to pre-exercise (baseline). The result through the statistical analysis of plasma volume change and lipid profiles as follows:1. PVC was not changes among the intensities while the differences of PVC over time were detected at 50%LT (baseline vs immediately post-exercise, p<.05) and 75% LT (immediately post-exercise vs 48h PE, p<.05). 2. No significant difference was determined in changes of HDL, LDL, VLDL, TG, and TC at various intensities over time. However, there was favourable changing tendency of HDL & TG at the 100%LT intensity. Consequently, exercise at LT intensity might favourably alter the lipid profile as demonstrated in increasing tendencies of 24h and 48h HDL concentrations in combination with decreasing tendencies of TG and VLDL at in 24h and 48h. Therefore, the 100%LT intensity might be the favourable threshold intensity of acute aerobic exercise (expending over 400 ㎉ or spending over 38min for exercise duration) necessary to promote a significant increase in HDL.
최민성,김이석,정고운,심윤택,구형남,최병하,정낙은,최영식 대한법의학회 2014 대한법의학회지 Vol.38 No.1
Acute necrotizing esophagitis (AEN), also called “black esophagus,” is a rare disorderwith an unknown pathogenesis. Endoscopic findings generally show black pigmentationthroughout the esophagus. This case also offered rare views of the grossanatomy of this disorder. Histological examination revealed that the mucosal and submucosallayers of the esophagus were involved in the severe necrotizing inflammation. The chief manifestation of this disease is hematemesis from hemorrhage of theupper gastrointestinal tract with a typically multifactorial etiology. AEN is also characterizedby a clear boundary at the gastroesophageal junction where the necrosisstops. In this study, we report an autopsy case of a 61-year-old man with necrotizinginflammation throughout the esophagus and esophageal necrosis from the laryngopharynxto the gastroesophageal junction. The patient was a disabled person with ahistory of alcohol abuse who was also diagnosed with mild coronary arteriosclerosisand fatty liver on the basis of the underlying diseases. In this case, the main etiologyfor poor perfusion from the distal esophageal area was likely underlying illness, historyof alcoholism, and malnutrition.