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이동훈,김영준,강현삼,이병재 한국유전학회 1986 Genes & Genomics Vol.8 No.2
The nucleotide sequences of tRNAs were compared and the homologies between a pair of sequences were calculated. The homology is high between phylogenically related organisms, but low between eukaryote and prokaryote. The organelle's tRNA sequence shows very lower homology with chromosomal tRNA sequence. The homology and evolotionary distance was obtained by the method of Kimura (1980) with the sequences of chromosomal tRNAs which have the same anticodon (GUC) to compare orthologous genes. The phylogenic tree was constructed by unweighted pairgroup method using arithmatic average (UPGMA). The time of divergence of prokaryote and eukaryote was estimated to be 6.4×10^(10) years ago and the branching order in this phylogenic tree was in good agreement with that obtained by primary protein structures and 5S rRNA sequences.
날개의 전개성능 확인을 위한 공압식 시험장치 성능 해석
이동훈,Lee, Donghoon 한국군사과학기술학회 2016 한국군사과학기술학회지 Vol.19 No.2
In this paper, a pneumatic device for the deployment performance verification of canards deployed by inertia has been designed and the performance of the pneumatic device has been proven through analysis and tests. The pneumatic conveying process, orifice opening process and piston movement process of the pneumatic device were investigated by using numerical methods. The orifice diameter, pressure in a pressure tank and type of gas were regarded as the main design parameters of the pneumatic device. The error rate between analysis and test results under the same conditions was within 4 %. The accuracy of numerical methods used in this study were validated.
이동훈,장성록,목연수,전경원 한국산업안전학회 1993 한국안전학회지 Vol.8 No.3
Automation and mechanization of work make people put the machine into operation and watch the state of operations. In the process of those works, they are apt to have accidents caused by their carelessness. To reduce such accidents, we can practise TOUCH and CALL, which is to indicate and ascertain the dangerous parts at every process before performing works. The objectives of this study are to show quantitatively the efficiency of TOUCH & CALL and to examine the effects of S-R compatibility. The results show that reaction time is longer(0.138-0.279sec.) in case of indicating with fingers and shouting than that of responding only visually. On the other hand, the error rate decreases by 3. 3 times -7times. From this, it is considered to verify quantitative estimation on multiple feedback of TOUCH & CALL.
이동훈,임상철,윤성호,강태구,박종민 대한이비인후과학회 2019 대한이비인후과학회지 두경부외과학 Vol.62 No.4
Background and Objectives The purpose of this study was to review the clinical characteristics and treatment outcomes of benign and malignant nasal septal tumors. Subjects and Methods A total of 34 patients who underwent the treatment for nasal septal tumor between 2004 and 2015 were included in this study. Demographic characteristics, sinonasal chief complaints, size and localization of nasal septal tumor, imaging findings, surgical method, histopathologic results, treatment outcomes, and postoperative complications were reviewed. Results Of the 34 patients with nasal septal tumor used in this study, 22 (64.7%) had benign tumors and 12 (35.3%) had malignant tumors. The most common sinonasal complaint of both benign and malignant nasal septal tumors was nasal obstruction. The most common benign tumor was inverted papilloma (n=7), whereas the most common malignant tumors were malignant melanoma (n=2), plasmacytoma (n=2), and metastatic carcinoma (n=2). All patients except two cases underwent endoscopic tumor removal. There were 4 recurrences in malignant nasal septal tumors. There was no recurrence in benign tumors. No major complications resulting from surgical intervention were found. Conclusion Endoscopic surgery with complete excision is a safe and effective procedure for benign nasal septal tumors. Recurrence is more common in malignant nasal septal tumor. Therefore, long term follow-ups with regular radiologic and endoscopic examinations are necessary for patients with malignant nasal septal tumor.
Mucocele of the Nasal Septum : Case Report and Review of the Literature
이동훈,이재운,조완석,임상철 대한비과학회 2015 Journal of rhinology Vol.22 No.2
Mucoceles are relatively common cystic lesions of the paranasal sinuses. However, mucocele of the nasal septum is extremely rare. We report a case of a mucocele present in this unusual location. Mucocele of the nasal septum should be considered in the differential diagnosis of a mass of the nasal septum and/or median canthal region. Nasal septal mucocele can be effectively treated with endoscopic marsupialization or complete excision.