남병철의 혼천의 연구 I

이용삼,김상혁,남문현,LEE YONG-SAM,KIM SANG-HYUK,NAM MOON-HYON 한국천문학회 2001 Journal of The Korean Astronomical Society Vol.34 No.1

In this paper we have reconstructed an armillary sphere based on the Method of an Armillary Sphere Making described in the Volume 1 of The Collection of Writings on the Scientific Instruments-Uigijipsol (儀器輯說, two volumes) edited in the 1850's by Nam Byong-Chul (南秉哲, 1817-1863) who was a famous Korean states-man-scientist. Nam achieved convenience and accuracy in the measurements of stellar positions in the manner of selective setting the equatorial, ecliptic and horizontal poles by adding a pole axis exchange ring called Jaigeukkwon (載極圈) between the Three Arrangers of Time and Four Displacements. We made use of 3-dimensional graphic software for modelling Nam's armillary sphere which consisted of five layers-eight rings. Results of simulation showed that the pole axis exchange ring functioned properly in setting the equatorial, ecliptic and horizontal coordinates simply by exchange of positions of specified holes on the ring. We ascertained that the invention of Jaigeukkwon solved inherent problems in the conventional Chinese armillary sphere in computation of real ecliptic coordinates. It was revealed that Nam Byong-Chul made great contributions in the East Asian history of armillary sphere making.

Antithrombotic and Anticoagulant Components of Plants

Han, Yong-Nam 경희대학교 동서의학연구소 1999 INTERNATIONAL SYMPOSIUM ON EAST-WEST MEDICINE Vol.1999 No.1

Yong-Nam Han. Natural Products Research Institute, Seoul National University, Seoul, korea.Antithrombotic and Anticoagulant Components of Plants. Proceedings of International Symposium on East-West Medicine, Seoul. Page 149-152, 1999.-There are many kinds of herbal drugs related to "Blood"(現血藥)in the Oriental Traditional Medicines. In order to investigate the antithrombotic and anticoagulant activities of blood related medicinal plants, we have utilized some screening methods such as intrinsic and extrinisic anticoagulant and antiplatelet activities, in vivo and in vitro. In the first study to screen the antithrombotic activity, we have measured the bleeding time(BT), the whole blood recalcification clotting time(WCT) and the plasma reclaification clotting time(PCT), successively, after orally administering an extract of a herbal medicine to rats. An intrinsic pathway anticoagulant drug should prolong all the three kinds of barometers, an extrinsic pathway anticoagulant one should prolong only BT, and antiplatelet one should prolong both BT and WCT. In the second study to isolate activ principles, we have measured in vitro the inhibitory activities on PCT, TF(tissue factor) and PA(platelet aggregation) for the intrinisic pathway anticoagulant, the extrinsic pathway anticoagulant and the antiplatelet activities, respectively. Recently, we have isolated weveral TF inhibitors(the extrinsic pathway anticoagulant) such as pubescenolic acid (20-epi-pomoli acid) from Ilex pubescens roots (毛冬靑), zivu-glycoside Ⅱ and pomoli acid from Sanguisorba officinalis roots (地楡), and compund I and X from Cinkgo biloba leaves(銀杏藥).Their anticoagulant activities were evaluated in vivo and in vitro on rat brain and lung tissue, respectively. Rat TF was measured by its procoagulant activity using one stage clotting assay method modified by us. Ziyu-glycoside Ⅱ, one of the most potent TF inhibitor was effective in vitro, but not in vivo. Thus, we prepared a derivative, named ZYM201, which strongly inhibitied the rat brain TF activity in vivo, Oral administration of ZYM201 enhanced atherosclerotic index in dietary, streptozo-tocin-induced, and alcoholic hyperlipidemic rats (unpublished data).

만성중이염의 골도청력변화

박선홍,노용훈,이도용,나한조,김용기,최봉남,도남용 朝鮮大學校 附設 醫學硏究所 1996 The Medical Journal of Chosun University Vol.21 No.1

We have usually experienced bone conduction impairment in chronic otitis media, but it is unclear that raised bone conduction threshold is due to the reflection of cochlear dam- age and / or Carhart effect ( an artificial elevation of bone conduction threshold due to conductive defect ) or both. The purpose of this study is to verify the influence of the artificial elevation of the bone conduction threshold in chronic otitis media and to estimate Carhart effect. A total of 336 cases of tympanoplasty with unilateral chronic otitis media without any other causes of sensorineural hearing loss was studied. The average threshold levels of the bone conduction in diseased ears ranged from 18.5dB at 4kHz to 12.1dB at 250Hz The longer duration of the disease, the larger perforation size, the more severe damage of the middle ear structure and the presence of the cholesteatoma made bone conduction threshold increased. The postoperative thresholds of bone conduction were Improved in 36 cases (40.4%) of the 89 cases that underwent operation with type I tympanoplasty technique without electrie drilling. The degree of the maximal improvement was 14.3dB at 2000Hz and the minimum was 8.8dB at 250Hz. but these result did differ from a statistically significant degree. The result suggest that the bone conduction threshold in chronic otitis media is elevated artificially by conductive defect and improved by successful reconstructive surgery.

두경부 편평세포암에서 형질전환 성장인자-알파(TGF-α)의 발현에 관한 연구

도남용,이승학,김완수,김경일,이동용,김용기,최봉남 조선의대 1996 The Medical Journal of Chosun University Vol.21 No.2

학습동기와 자아개념 및 학교적응간의 관계 분석

김용래,허남진 弘益大學校 敎育硏究所 2003 敎育硏究論叢 Vol.- No.20

The purpose of this examination was to find out the relationship among secondary school learner's learning motivation, self-concept, and school-related adjustment. And in order to achieve the purpose of this examination sampled middle/high school learners in Seoul and other areas. The instruments used for the data collection were 'School learning motivation Scale」 (Kim. Yong-Rae, 2000), 'Self-concept Scale」 (Kim, Yong-Rae, 1995) and 'School -related adjustment Scale, (Kim. Yong-Rae, 2000). The collected data analysis were performed using SPSS/WIN(11.0) program, and analysis Mean score(M), Standard Deviation(SD), Zero Order Correlation(r) and Multi-Regression Analysis. All statistic values were tested by t-test and F-test in the significant level of p<.05. The major findings of this examination were as follows: First, there were mostly significant differences in school-related adjustment depending on the learning motivation, self-concept and the upper, middle and low levels of its sub-factors(p<.00l). Second, there was a significant positive correlation by .687 between learning motivation and school-related adjustment and there also was a significant positive correlation by .641 between self-concept and school-related adjustment. Third, learning motivation and self-concept were significantly positive influences on Korea secondary school learner's school-related adjustment respectively.

후두 및 하인두 암종에서 p53단백 발현과 Espstein-Barr Virus 검출

최영환,도남용,나한조,이도용,노용훈,김완수,최종선 조선대학교 2001 The Medical Journal of Chosun University Vol.26 No.2

Background and Objectives : When p53 cancer suppressor gene, occurs gene deletion or point mutation, malignancy develops by loss of p53 function with abnormal p53 protein. The Epstein-Barr virus (EBV) is the causative agent of certain type of lymphoma and undifferentiated nasopharyngeal carcinoma. However, the role of EBV as a causative factor in other head &eck tumors is not fully elucidated except nasopharyngeal carcinoma. This study, the author examined that p53 expression and detection rate of EBV correlate to development of laryngeal and hypopharyngeal squamous cell carcinoma(SCC) and play the possible role of prognostic indicators. Materials and Methods : Formalin-fixed, paraffin-embedded tissue specimen from 32 cases of larynx and hypopharyngeal squamous cell carcinomas were studied by immunohistochemical staining for p53 and EBV. The results of analysis were compared with clinicopathological parameters. Results : p53 expression was 56.3% (18 cases) and the detection rate of EBV was 43.6% (14 cases) of 32 cases in laryngeal and hypopharyngeal squamous cell carcinomas. p53 expression was correlate with histologic grade (p<05) only. Detection of EBV was not correlate with clinicopathological parmeters. Conclusion : These results suggest p53 expression and the detection of EBV may be related with development of laryngeal and hypopharyngeal squamous cell carcinoma. And, the expression of p53 protein can be used as a prognosticator in laryngeal and hypopharyngeal squamous cell carcinoma under certain limitation.

불규칙한 풍하중을 받는 현수교의 동력학적 해석

김종인(Jong In Kim),김태남(Tae Nam Kim),이용재(Yong Jae Nam) 한국강구조학회 1990 韓國鋼構造學會誌 Vol.2 No.2

Stochastic dynamic analysis of suspension bridge subject to random wind loads were carried out by mode-displacement method and mode-acceleration method. The computed dynamic characteristics are vertical and torsional vibrations of NAM-HAE BRIDGE. From numerical results, it was found that mode-acceleration method, which formulated in this paper, was more reliable and economical than mode-displacement method.

초등학교 1학년 학동들의 구강보건지도활동 지침기준을 위한 조사연구

남용옥,김미정 韓國保健敎育學會 1997 보건교육건강증진학회지 Vol.14 No.2

This research reached conclusions to prepare indications for activity of Oral health Instruction of the first grade in an elementary school by several items of Oral examination and investigation. 1. The frequency of brushing their teeth of the children that were examined was generally two times a day(64.42%) ; it showed that it was the highest after breakfast(30.08%), and hardly any brushed their teeth after lunch(6.35%). 2. Most of the toothbrushes used were for children(97.46%), and the proper time to change their toothbrushes was less than two months(65.25%), but 31.37% of them used their toothbrushes for more than three mouths. 3. They usually used toothpaste. Those using toothpaste were 64.41%. By the way, for adults was the percentage 31.36%, and for those including fluorine it was 74.58%. 4. They mainly ate cookies, beverages, (coke, cider, etc.), fruit, bread, milk and so on for their dessert. 5. Most students had dental plaque (95.76%) ; 14.4% of then had calculus and 23.73% had gingivitis. 6. The results of disclosing showed that twelve anterior teeth were colored. The Mandible was comparatively more severe than the Maxillary in the colored-degree. the low-right-laterial incisor was the most severe and the right central incisor was the most severe of the Maxillary. 7. The pressure of tooth-brushing showed that half of the students brushed their teeth severely. The width of the brushing movements was more than 8mm for 51.70%, 5-8mm for 33.05% and less than 5mm for 14.25% Therefore 66.5% of them were shown to move their brushes insufficiently or oppositely. 8. When they brushed, the children who opened their mouth while brushing were more than those who kept their mouth closed.

ARMAX프로세스를 위한 최적기구변수법

南炫道,崔龍雲 단국대학교 1988 論文集 Vol.22 No.-

In this paper, the recursive optinal instrumental vairable method, which estimates noise dynamics as well as system dynamics using pre-filtered data, was propsed. In case of no pre-filtering, the computational burden of this algorithm is equal to that of extended least squares(ELS) methods and less than that of the rescursive maximum likelihood(RML) method. But in case of prefiltering the computational burden of this algorithm is equal to that of the RML, but this algorithm shows faster convergence than ELS and RML algoorithms. Also, vaeious instrumental variables were proposed, and various types of prefilters were prposed to improve the performance of the proposed algorithms. Computer simulations were performed to illustrate the efficiency of the proposed methods.

신경아세포종양 신경초종 1예

남용호,김지연,송계용,윤태진 대한피부과학회 2006 大韓皮膚科學會誌 Vol.44 No.4