축구 오버헤드 킥 동작의 운동학적 분석

김의환,이요열,김성섭,권문석,김성호 한국운동역학회 2003 한국운동역학회지 Vol.13 No.1

Kim, E-H · Lee , Y-Y · Kim, S-S· Kwon, M-S · Kim, S-H. The kinematical Analysis of the Overhead Kick on Soccer. Korean Journal of Sport Biomechanics. Vol. 13, No. 1,pp. 155-171. The purpose of this study was to analyze the kinematic variables of over head Kick(OHK) in soccer with three dimensional analysis technique and show the kinematic characteristics of it. The 7 subjects were university football player who have been playing football more than 7 years. The OHK was filmed on 16mm video camera(30frame/sec.) kinematic variables were temporal, postures, and COG(center of gravity). The mean values and the standard deviation for each variables were obtained and used as basic factors for examining characteristics of OHK. the results of this analysis were as follows : Temporal variables : The total time elapsed(TE) of OHK was0.94~1.14sec., the 1st phase was 0.35sec., 2nd phase was 0.46sec., and 3rd phase was 0.22sec.. Posture variables : When subjects performed OHK at the impact event, the ankle and knee angle of kicking foot were more extend than supporting foot. but the hip angle of supporting foot were more extend than kicking foot. Moving distance of the center of mass of the both foot : When subject performed OHK at the impact event, the range of distance on mediolateral direction aspect into right · left shoulder line, anteroposterior direction aspect was 20.9±10.5cm, vertical direction aspect was 92.3±19.9cm. Angular velocity : the faster angular velocity of knee · ankle on the kicking foot grew form jump position to landing position, the faster velocity of ball became. C. O. G. variables : When subject performed OHK at the impact event, upper part of the body was getting lower, lower part of the body was getting higher.

Gitelman씨 증후군 1예

차영학,송명준,신요식,김성민,김영욱,김윤권,김소연,김영중,조민구,이권전 全南大醫大 2001 전남의대학술지 Vol.37 No.3

Two-Dimensional Analysis of Latch-Up Phenomena in Latch-Up-Free Self-Aligned IGBT Structure

Yo-Hwan Koh,Choong-Ki Kim 전력전자학회 1989 ICPE(ISPE)논문집 Vol.- No.-

The latch-up phenomena of insulated gate bipolar transistor IGBT) are numerically simulated using a two-dimensional device mulation program for various lengths of the n+-source region and arner filetimes, in order to investigate quantitatively the latch-up nmunity of the latch-up-free self-aligned IGBT which has been proposed recently by Koh and Kim. The key concept behind the iumerical simulation is that the parasitic thyristor in the two-guncnsional IGBT is equivalent to a p-i-n diode of the same geometry in a conduction state due to conductivity modulation The simulation shows that the holding current increases by a factor jf about 100 when the length of the n+-sourcc region is decreased from about 10μm to 1 μm, while the holding current is increased only by a factor of 5 when the lifetime is decreased from 100 nsec to 5 nscc These results clearly demonstrate that the latch-up supression by reducing the length of the n+-sourcc region as sug­gested in the proposed latch-up-frcc IGB1' is far more effective than reducing the carrier lifetime.

Graves 병과 혈청 면역글로불린-E의 연관성

김현영,박기룡,김성훈,김지연,송수근,최영식,박요한 대한내분비학회 2002 Endocrinology and metabolism Vol.17 No.5

연구배경: Graves 병은 미만성 갑상선종, 갑상선기능한진, 안구침법 등을 특징으로 하는 자가면역성 질환으로, 갑상선자극호르몬 수용체에 대한 자가항체(TRAb)가 갑상선을 자극하여 발생된다. TRAb는 Graves병 환자의 약 85%이상에서 검출되며 활성화된 TRAb는 대부분 IgE로 알려져 있다. 그러나 최근 Graves병 환자의 갑상선조직과 안구조직에 IgE의 침착과 꽃가루 등에 의한 알레르기성 비염으로 인해 Graves병이 발생하거나 재발된 견우가 보고되어 Graves병의 병인에 IgE의 연관성이 제기 되고 있으나, 국내에서는 이에 대한 연구가 드물다. 본 연구에서는 Graves병에서의 혈청 IgE농도와 Graves병의 병기와의 관계 및 TRAb와 IgE 농도와의 연관성을 살펴보고자 하였다. 대상 및 방법 : 2000년 4월 1일부터 7월 1일까지 고신의료원 내분비내과를 방문한 환자 중 Graves병 46예, 만성갑상선염 6예 및 고신의료원 건강증진센터를 방문한 환자 중 갑상선질환의 병력이나 가족력 및 알레르기성 비염의 병력이 없는 35예의 정상대조군을 대상으로 연구를 시행하였다. TRAb는 갑상선자극호르몬 결합 억제 면역글로불린(TBII)으로 측정하였으며, IgE는 효소면역분석법으로 측정하였다. 결과: IgG인 TBII는 Graves병에서 만성갑상선염과 대조군에 비해 높았으며, IgE 평균농도는 Graves병에서 598.1±1112.9U/mL로 만성갑상선염 환자의 98350±79.7U/mL, 대조군 161.72±194.4U/mL에 비해 높았다(p<0.05). Graves병에서 알레르기성 비염의 발병율은 10.9%(5/46)였으며, Graves 병에서의 혈청 IgE 농도는 알레르기성 비염의 병력이 있는 경우 903.1±1152.2U/mL로 없는 경우 560.8±1117.0U/mL보다 높은 경향을 보였다. Graves병의 병기에 따른 TBII와 IgE 농도의 변화를 항갑상선제로 치료하지 않은 군(비치료군)과 치료한 군(치료군) 및 재발군으로 나누어 비교하였을 때, TBII는 치료군(7.4±18.6%)에 비해 비치료군(49.9±23.9%)과 재발군(21.1±3.1%)에서 높았으며(p<0.05), 혈청 IgE치도 치료군(233.8±432.7U/mL)에 비해 비치료군(758.6±1250.0U/mL)과 재발군(1198.5±1952.1U/mL)에서 높은 경향을 보였다. 항갑상선제로 치료한 치료기간에 따른 TBII와 IgE 농도 변화에서, TBII는 비치료군(49.9±23.9%)과 1년 미만 치료군(24.8±3.8%)에서 1년 이상 치료군(2.22±1.97%)에 비해 높았으며(p<0.05), 혈청 IgE 농도는 비치료군(758.6±1250.2U/mL)에서 1년 미만 치료한 군(158.3±91.5U/mL)과 1년 이상 치료군(252.7±483.4U/mL)에 비해 높았으나 유의하지는 않았다. 결론: Graves 병에서 IgE 농도는 증가되어 있었으며, Graves 병의 각각 다른 병기에서의 혈청 IgE 농도의 변화는 Graves qudd의 경과에 영향을 미치는 IgG인 TBII치의 변화와 유사한 경향을 보였다. 그러나 혈청 IgE와 Graves 병과의 연관성을 알아보기 위해서 IgE와 더불어 CD23항원 등의 다른 검사도 병행하는 전향적 연구가 필요할 것으로 생각된다. Background: It is widely believed that Graves' disease is and autoimmune disorder characterized by the presence of the circulation TSH receptor antibody (TRAb). The majority of the activity of TRAb is of the immunoglobulin G(IgG) class. However, other immunoglobulin such as immunoglobulin E(IgE), may play a rloe in the activity. IgE accumulation has been reported to occur in the thyroid gland and ocular muscles of subjects with Graves' disease. Furthermore, it has been noted that recurrence of Graves' disease can be induced by and allergy to pollen. Because an allergy to pollen is commonly associated with IgE, IgE might play a role in the induction of Graves' disease. Therefore, investigated whether IgE was elevated in Graves' disease, and evaluated the potential relationship between the levels of TRAb and IgE Graves' disease. Methods: Forty-six patients with Graves' disease, and 6 with chronic thyroiditis, diagnosed at the Kosin Medical Center between April, 2000 and July, 2000 were included in this study. Thirty-five persons without thyroid disease or a history of allergic rhinitis were used as normal controls. The level or TRAb was measured using thyrotropin binding inhibitory immunoglobulin (TBII). Serum total IgE was measured using as enzymeimmunoassay method. Test for thyroid function, TBII and total IgE were performed in all cases, and the results statistically analyzed. Results: TBII, as IgG, and the serum IgE level were higher in the patients with Graves' disease, and the levels of the latter were 598.1±1112.9U/mL, 98.5±79.7U/mL and controls 161.7±194.4U/mL in the Graves' patients, those with thyroiditis and the controls, respectively (p<0.05). The prevalence of allergic rhinitis in Graves' disease was 10.9%. The serum IgE level in Graves' disease with, and without, allergic rhinitis were 903.1±1152.2U/mL and 560.8±1117.0U/mL, respectively, although there was no significancant difference between the two groups. According to the clinical stage, the serum TBII level was higher in the untreated Graves', and relapsed patients 49.9±23.9% and 21.1±3.1%, respectively, than in the treated group, 7.4±18.6% (p<0.05). The serum IgE level was higher in the untreated Graves' and relapsed patients 758.6±1250.2U/mL and 1198.5±1952.1U/mL, respectively, than in the treated group 233.8±432.7U/mL, although this was not significant. According to the duration of treatment, the serum TBII levels were higher in the untreated Graves' patients, and those treated for less than 1 year, than in those treated for more than 1 year, with values of 49.9±23.9, 24.8±3.8 and 2.22±1.97%, respectively (p<.05). The serum IgE level was higher in the untreated Graves' disease (758.6±1250.2U/mL) than in the groups treated for less than 12 months (158.3±91.5U/mL) and more than 12 months (252.7±483.4U/mL), but the differences were not significant. Conclusions: The concentration of IgE was high in Graves' patients, and although not statistically significant, the serum igE level in Graves' patients with allergic rhinitis was higher than those without. With regard to the clinical stage of Grave's disease, the change in the IgE level tended to follow that of the TBII. Further study will be required to define the possible role of IgE in the pathogenesis in Graves' disease (J Kor Soc Endocrinol 17:640∼648, 2002).

Papillon-Lefevre Syndrom의 임상 및 미생물학적 검사와 치료

송요한,김문현,김형섭,김재곤,백병주 大韓小兒齒科學會 1998 大韓小兒齒科學會誌 Vol.25 No.2

The Papillon-Lefevre Syndrome(PLS), a disease with autosomal recessive inheritance, is characterized by diffuse hyperkeratosis of the palms and soles, mostly prepubertal periodontitis and premature loss of primary and permanent dentition. The etiology of the destruction of periodontal tissues has not been completely clarified. In recent years, two main factors are suggested to be responsible for tooth loss : firstly, the presence of gram negative microorganisms in the periodontal pockets of the patients. The other factor suggested is cellular deficiency in chemotaxic and phagocytic function of neutrophylic granulocytes. Resent data suggestes that mechanical debridement in conjunction with antibiotic therapy may be successful in periodontal management of Papillon-Lefevre Syndrome, particularly if administered early. In this study, a Papillon-lefevre syndrome patient was studied clinically, radiologically, histopathologically and microbiologically. 5 years female patient with gingival swelling and destruction of periodontal structure on the whole dentition were examined and palmar and plantar hyperkeratosis were can be seen. On microbiological analysis, Actinobacillus actino-mycetemcomitans was performed. Concurrently, the children recieved extraction of maxillary anterior teeth and construction of removable prosthetis. The combination of professional oral hygiene care and antibiotic therapy improved the dermatologic and peridontal condition.

동종골수이식 환자에서 발생한 지역사회발생 Parainfluenza virus 3형 폐렴 1예

신종욱,조요한,강철인,김성한,이상윤,김의석,오명돈,이환종,박선양,김병국,최강원 대한감염학회 2002 감염 Vol.34 No.5

후두 마스크는 기관 내 삽관 튜브와 비교하여 식도 운동에 유의한 영향을 미치는가 ?

손용,박수경,김정훈,윤재승,김태요,정영표,김향이 대한마취과학회 2002 Korean Journal of Anesthesiology Vol.42 No.2

Background : To know whether the laryngeal mask airway (LMA) triggers a pharyngo-esophago-gastric reflex during general anesthesia, we compared the esophageal motility of patients with an LMA or endotracheal tube (ETT) in place. Methods : Fifty patients (ASA Ⅰ or Ⅱ) scheduled for elective orthopedic surgery with general anesthesia were randomly allocated into LMA (n = 30) or ETT (n = 20) groups. The esophageal manometric inputs were recorded continuously using an ambulatory esophageal manometric recorder and divided into five perioperative phases (preanaesthesia, induction, operation, LMA or ETT rejection, and arousal phase). Results : The peristaltic percent and number of contractions per minute were significantly decreased during induction, operation, LMA or ETT rejection and arousal phases compared with preanesthetic phases in both the LMA and ETT groups. However, there were no significant group differences in any corresponding perioperative phases. Conclusions : We suggest that during general anesthesia the use of a LMA does not provoke significantly different esophageal peristalsis compared with an ETT. Thus, the LMA is unlikely to potentiate gastric regurgitation and reflux during general anesthesia by stimulating the pharyngo-esophago-gastric reflex. (Korean J Anesthesiol 2002; 42: 141~147)

HCV, Alcoholic : PE-096 ; Clinical and histopathological features of acute onset autoimmune hepatitis

( Min Young Rim ),( Soo Yong Park ),( In Ku Yo ),( Min Su Ha ),( Ju Seung Kim ),( Ju Won Lee ),( Young Kul Jung ),( Dong Hae Chung ),( Oh Sang Kwon ),( Yun Soo Kim ),( Duck Joo Choi ),( Ju Hyun Kim1 ) 대한간학회 2012 춘·추계 학술대회 (KASL) Vol.2012 No.-

Background: Autoimmune hepatitis (AIH) is a progressive inflammatory liver disease of unknown etiology that is reported to be a consequence of aberrant autoreactivity. Several studies which reported the acute presentation of AIH have different clinical course and histologic features. In this study, we compared acute presentation of AIH and chronic presentation of AIH. Methods: We retrospectively reviewed the medical records of patients with autoimmune hepatitis from January 2003 to June 2011 at Gachon University, Gil Hospital. A total of 29 patients were enrolled, 7 patients were diagnosed with acute presentation of AIH. Results: There was no difference between two group in age, gender, and score system of AIH. Patients with acute presentation had higher serum levels of total bilirubin, lower serum levels of albumin in clinical feature (p<0.05), and higher frequency of zone 3 necrosis in histologic feature. The cumulative incidental rate of the normalization of serum AST and ALT levels with prednisolone treatment was similar between patients with acute presentation and chronic presentation in clinical course. Conclusions: Higher AST, ALT and, bilirubin were clinical specific feature, and zone 3 necrosis is a histological characteristic of autoimmune hepatitis with acute presentation.

流域特性을 考慮한 流出 모델링에 관한 硏究

金治弘,安元植,韓成大,尹如松 成均館大學校 科學技術硏究所 1985 論文集 Vol.36 No.1

This study have been carried out as a sector of the rainfall-runoff relationship research. First of all, the runoff research has the difficult problem due to non-linearity of hydrological phenomena. In this study, according to the method of runoff separation into components by Hino and Hasebe (1980) is applied. This theory considers sufficiently the physical mechanism of runoff process to separate into the groundwater, interflow, and surfaceflow, respectively. Then each component of runoff time series can be reduced to the linear subsystem, that is, ARMA model can be obtained in each subsystem. Actual flood hydrograph of the every two major gauging stations in the Han River basin, the Naktong River basin and the Kum River have been analyzed, and have taken out the characteristics of each river basin. Also the runoff model have obtained for these basins.

APCVD법을 사용한 보론 포스파이드의 증착 및 특성에 관한 연구

김순영,문병필,윤여철,전호승,김철주 서울시립대학교정보기술연구소 2001 정보기술연구소 논문집 Vol.3 No.-

Boron Phosphide films were deposited on the glass substrate at the low temperature, 550℃, by the reaction of B₂H_6 with PH₃ using CVD. N₂ was employed as carrier gas. The reactant gas rates were 50 ㎖/min for B₂H_6, 50 ㎖/min for PH₃ and 1.5ℓ/min for N₂. The films were annealed for 1hour, 3hours in N₂ambient at 550℃. The deposition rate was 1000Å/min and the refractive index of film was 2.6. The measurement of XRD shows that the films have the preferred orientation of (1 0 1). The data of VIS spectrophotometer show 75.49% for as-deposited, 76.71% for 1hr-annealed and 86.4 % for 3 hrs-annealed. The data of AFM show 73Å for as-deposited, 88.9Å for 1hr-annealed and 220Å for 3hrs-annealed. Also, The data of the secondary electron emission rate(γ) s how 0.317 for as -deposited, 0.357 for 1hr-annealed and 0.537 for 3hrs-annealed. And, The film shows the surface deposited thin film, bu using FT-IR, has the O-H bond and this bond is greatly decreased as annealing.