100m 달리기시 최고 속도 구간과 감속 구간의 동작 비교 연구

은선덕,정철수,배성제 한국운동역학회 1996 한국운동역학회지 Vol.6 No.1

본 연구의 목적은 100m 달리기에서 최고 속도 구간과 감속 구간에서의 동작을 비교하여 감속의 원인을 규명하는 데 있다. 두 구간에 대한 주요 운동학적 변인인 신체 중심의 속도와 변위, 보속과 보폭, 상체의 전경각, 관절각, 각속도를 분석하여 다음과 같은 결론은 얻었다. 감속 구간에서의 지면 접촉 기간 동안과 체공 기간 동안의 신체 중심의 수평 속도는 최고 속도 구간에 비해 느린 것으로 나타났다. 보속은 최고 속도 구간에 비해 느린 것으로 나타났고, 지지 시간은 긴 것으로 나타났으며, 체공 시간은 차이가 나타나지 않았다. 보폭은 최고 속도 구간에 비해 짧은 것으로 나타났고, 착지시 신체 중심과 발끝의 수평 거리는 최고 속도 구간에 비해 긴 것으로 나타났다. 또한 상체의 전경각은 착지시에만 차이가 있었으며 최고 속도 구간에 비해 작고, 무릎 관절각은 착지시와 이지시에 있어서 최고 속도 구간에 비해 작았다. 그리고 고관절각은 반대발의 이지시와 착지시, 그리고 최소값에 있어서 최고 속도 구간에 비해 크고, 운동 범위에 있어서는 작은 것으로 나타났다. 또한 무릎 관절 각속도는 최고 속도 구간과의 비교에서 차이가 나타나지 않았다. The study was conducted to make a comparative analysis of running motion and to examine the difference in the deceleration phase(80∼90m) and the Max-speed phase(30∼40m) during the 100-meter Sprint. In this study, data was analyzed with variables including velocity and displacement of center of gravity, stride frequency, stride length, foward angle of upper body, joint angle, angular velocity in the deceleration phase and the max-speed phase. The conclusions of the study were as follows ; 1. Horizontal velocity of the center of gravity in the deceleration phase was found to be slower than that in the max-speed phase in the supporting period and non-supporting period. 2. Stride frequency in the deceleration phase was found to be slower than that in the max-speed phase, and supporting time n the deceleration phase was longer than that in the max-speed phase, also there was no difference between each phase in nonsupporting time. 3. Stride length in the deceleration phase was to be found shorter than that in the max-speed phase. 4. Horizontal distance between the center of gravity and toe in the deceleration phase was to be found longer than that in the max-speed phase. 5. Forward angle of upper body at the moment of touch down in the deceleration phase was found to be smaller than that in the max-speed phase. 6. Knee angle at the moment of touch down and take off in the deceleration phase were found to be smaller than in the max-speed phase. 7. Hip angle at the moment of touch down and take off of the other foot, and minimum hip angle in the deceleration phase were found to be larger than that in the max-speed phase, and range of, motion in the deceleration phase was smaller than that in the max-speed phase. 8. Knee angular velocity at the moment of touch down of the other foot toward flection in the deceleration phase was found to be larger than that in the max-speed phase.

유방의 섬유낭종성 질환에서 보이는 아형의 빈도에 대한 연구

은약수,김의한,강상균 순천향대학교 1993 논문집 Vol.16 No.2

To understand the incident rate about the subtype of fibrocystic disease, we collected 116 breast cases requested from Jan. 1991 to June 1992, and reviewed, The results were as follows: 1. The fibrocystic disease was observed in 52.5%(61 of 116 cases). 2. The peak incidence was in the third decade and it did not reveal before the age of 20 and after the age of 50. 3. In fibrocystic disease, epithelial hyperplasia relative to breast cancer was observed in 33%(19 of 61 cases)and the epithelial hyperplasia was more significant in the young age group. 4. Among the 61 cases of fibrocystic disease, the most frequent type was fibrosis (88.5%), and followed by microcyst(32.8%), ductal hyperplasia(24.6%), lobular hyperplasia(11.5%), apocrine metaplasia(9.8%) and macrocyst and sclerosing adenosis(1.6%) in order.

복합재료 하니콤 샌드위치 구조의 열응력 해석

은성수,이수용 한국항공대학교 1998 論文集 Vol.36 No.-

온도하중이 작용할 때 복합재료 하니콤 샌드위치 쉘 구조물의 거동을 파악하기 위해서 3차원 응축쉘 이론 그리고 일차전단 변형이론에 입각한 유한요소 해석이 수행되었다. 본 연구에서는 하니콤을 탄성보강재로 가정하여 온도가 증가함에 따라 하니콤과 적층쉘 사이에서 발생하는 분리현상을 규명하였다. 이러한 파손현상은 적층각도와 적층쉘 두께이 따라 다르게 나타났다. 준등방성 그리고 직교이방성 보다도 angle-ply 적층순서에서 파손이 많이 발생하였고 또한 적층쉘의 두께가 증가함에 따라 파손현상이 많이 발생하였다. Finite element analysis based on 3-D degenerated shell theory and first shear deformation theory was peformed to investigate the behavior of composite and honeycomb sandwich shell structures under thermal loading. In this study, the honeycomb was regarded as an elastic foundation and delamination phenomenon occurring between the laminated shell and the honeycomb was examined as temperature increases. The results shows that the delamination depends on lay-up angle and thickness in the composite shell. A lot of failure was occurred for angle-ply stacking sequence rather than for quasi-isotropic and cross-ply stacking sequences and a lot of failure was occurred as the thickness of the composite shell increases.

폐기물 성상과 매립방식에 따른 침출수 특성

성낙창,김은호,문추연,김정권,장성호,김수생,박출재 동아대학교 환경문제연구소 1996 硏究報告 Vol.19 No.1

In this study, we can be obtained the following conclusions about the characteristics of leachate with waste compositions and landfill methods. pH shows a tendency to increase in E. landfill, because NH₃ is created by anaerobic degradation and dissolved in leachate. The concentrations of BOD and COD become different, In case of E. landfill, food of combustible is H. & S. landfill and then SS is high in concentration. According to passed time, T-N is high in concentration, but T-P shows a similar tendency. Heavy metals of leachate is lower than threshold concentrations. If leachate is treated biologically, microbes are not inibitory.

후두부 발작성 간질파와 동반된 양성 소아기 간질의 임상적 연구

유영수,이상도,김지언,임정근,박영춘 대한신경과학회 1996 대한신경과학회지 Vol.14 No.4

반코마이신 내성 장구균 감염에 대한 quinupristin-dalfopristin 치료 경험

추은주,최상호,조영환,정선미,김백남,김남중,김미나,김양수,우준희,류지소 대한화학요법학회 2002 대한화학요법학회지 Vol.20 No.1

VRE 감염이 중환자에서 급속히 증가하고 있으나 이에 대한 확실한 치료제가 없어 새로운 항생제에 대한 활발한 연구가 있는데 그 중 하나가 quinupristin/dalfopristin이고, 저자들은 중증 환자들의 VRE 감염에 대해 quinupristin/dalfopristin를 투여하여 치료한 임상적 경험을 하였기에 문헌고찰과 함께 보고하는 바이다. Vancomycin-resistant enterococci (VRE) was first recognized in 1992 in Korea. VRE infection have been increasingly reported in immunosuppressed patients over the past decade and have become one of major nosocomial pathogens. Clinicians carings for patients with VRE infections face severe constraints in the selection of treatment. Quinupristin/dalfopristin is active in vitro againt vancomycin-resistant E. faecium (VREF), with a MIC_(90) of 1.0㎍/mL. We studied the clinical efficacy and safety of this agent in the treatment of VREF infection. Patients were included if they had signs and symptoms of active infection including bacteremia, intra-abdominal infection, and wound infection. A total of 13 patients with VREF infection were enrolled. A favorable clinical response (cure or improvement) occured in 10 of 11 evaluable patients. The only adverse events related to quinupristin/dalfopristin were arthralgia and myalgia, which occurred in 2 of 13 patients. These results suggest that quinupristin/dalfopristin is effective and safe as treatment for VREF infections in critically ill patients with serious underlying conditions.

박동성 고주파 열응고술을 이용한 성상신경절 차단의 체열진단을 통한 효과판정 : 증례보고 A Case Report

심성은,박수영,김용철,이상철 대한체열학회 2003 대한체열진단학회지 Vol.3 No.1

가속실험을 이용한 상업적 멸균처리 한식 탕반류의 유통기한 평가

한경수,이은정,홍상필 한국조리과학회 2005 한국식품조리과학회지 Vol.21 No.2

The objective of this research was to estimate the shelf-life of 4 kinds of Korean soup (Yukkaejang, Sagol-woogeojitang, Kalbitang, and Seolleongtang), under an accelerated experiment, based on the changes in the selected physico-cliemical, microbiological and sensory characteristics. The 4 kinds of Korean soup (Yukkaejang, Sagol-woogeojitang, Kalbitang and Seolleongtang) were treated at 121℃: for 30 min. and the shelf life was evaluatcdthrough accelerated experiment, based on the changes in the physico-chemical, microbiological and sensory characteristics. No viable cells were detected in any of the treatments and no significant differences were shown in pH, T13A and Hunter's color values for 3 weeks at 37℃. The periods found to he acceptable by sensory evaluation were 7 days for Yukkaejang and Kalbitang, 14 days for Sagol-woogeojitang, and 21 days for Seolleongtang. For an assumed Q_(10) value of 2.5, shelf-life was predicted as 109 days for Yukkaejang and Kalbitang, 219 days for Sagol-woogeojirang, and 328 days for Seolleongtang at 5℃, suggesting that these 4 hinds of Korean soup are suitable for commercial distribution.

무용 전공별 체격·신체구성·체형에 관한 연구

김상은,구광수,김우진 창원대학교 체육과학연구소 2003 경남 체육연구 Vol.8 No.1

본 연구는 무용 전공별의 체격과 신체구성 그리고 체형을 연구하기 위하여 부산과 경남지역에 거주하며 B대학교와 C대학교에서 무용을 전공하는 여학생들 중 한국무용 35명, 현대무용 32명, 발레 26명 총 93명을 대상으로 조사하였다. 조사된 자료는 일원변량분석을 통하여 다음과 같은 결론을 얻었다. 1. 무용 전공별 신장은 현대무용과 발레에서 차이가 있었으나, 흉위와 하지장은 차이가 없었다. 2. 무용 전공별 체중과 좌고는 현대무용과 발레 그리고 한국무용과 발레에서 차이가 있었으나, 체지방률, 상완배부, 장골능상부, 하퇴배부, 상완골단폭은 차이가 없었다. 3. 무용 전공별 체지방량, 제지방량, 체수분량은 현대무용과 발레에서 차이가 있었고, 견갑골 하부는 한국무용과 현대무용에서 차이가 있었다. 4. 무용 전공별 대퇴골단폭과 굴위상완위는 한국무용과 발레 그리고 현대무용과 발레에서 차이가 있었고, 하퇴위는 현대무용과 발레에서 차이가 있었다. 5. 무용 전공별 내배엽요소는 차이가 있었고, 중배엽, 외배엽요소는 차이가 없었으며, 내배엽 요소의 사후검증결과 전공간의 차이는 없었다. 6. 무용 전공별 체형은 한국무용과 발레는 외배엽성의 중배엽인 F이고, 현대무용은 중배엽성의 외배엽형인 H이며, 전공자들의 전체적인 체형은 아주 전형적인 중간체형인 M인 것으로 나타났다.

高濃度에타놀投與가 흰쥐 數種臟器의 酸素消費量과 肺容壓率에 미치는 影響

朴東盛,黃樹寬,朴載植,朱永恩 慶北大學校 醫科大學 1982 慶北醫大誌 Vol.23 No.2

Ethanol 投與로 因한 흰쥐 數種臟器의 酸素消費量(QO_2)과 血中乳酸濃度 및 肺容壓率의 變化를 살펴보기 위해서, 흰쥐를 材料로하여 50% ethanol을 體重 100gm 當 1.5㎖ 씩 經口적으로 單回投與하여 1時間에서 24時間까지 經時的으로 肝, 腎, 脾 및 腦組織의 QO_2를 測定하고, 血中乳酸濃度 및 肺容壓率를 測定하여 對照群과 比較하여 다음과 같은 結果를 얻었다. QO_2는 肝組織에서 對照의 2.11±0.10㎕O_2/hr/㎎D. W. 에 比해 ethanol 投與後 1∼6 時間에는 有意하게 높았으며, 特히 1 및 3時間에는 各各 2.81±0.15 및 2.82±0.07㎕O_2/hr/㎎D. W. 로서 最高値를 나타내었다. 腎組織은 對照의 5.33±0.26㎕O_2/hr/㎎D. W. 에 比해 ethanol投與後 1∼12時間에는 有意하게 높았으며, 그 中 3時間에는 7.47±0.32㎕O_2/hr/㎎D. W. 로서 最高値를 나타내었다. 腦組織은 對照의 4.20±0.14㎕O_2/hr/㎎D. W.에 比해 ethanol 投與後 1∼6時間에는 有意하게 높았으며, 特히 3時間에는 5.53±0.29㎕O_2/hr/㎎D. W로서 最高値를 나타내었다. 脾組織은 對照의 3.55±0.13㎕O_2/hr/㎎D. W.에 比해 ethanol 投與後 1∼6 時間에는 有意하게 높았으며, 이 中 3時間에는 5.81±0.23㎕O_2/hr/㎎D. W로서 最高値를 나타내었다. 卽 肝, 腎, 脾 및 腦組織 모두의 QO_2는 對照値에 比해서 ethanol 投與後 1, 3 및 6時間에 有意하게 높았으며, 이 中 3時間에 最高値를 나타낸 後 漸次 減少하여 12 및 24時間에는 別差異가 없었다. 腎은 12時間까지 有意하게 높았다. 그리고 各 組織의 QO_2의 比較에서 腎이 가장 높고, 다음이 腦, 그리고 脾, 肝의 順으로 나타났다. 血中乳酸濃度는 對照의 12.57±0.47㎎/㎗ 에 比해 ethanol 投與後 1 및 3時間에 各各 24.36±2.70㎎/㎗ 및 22.48±3.21㎎/㎗로서 有意하게 높았으며, 6∼24時間에는 別 差異가 없었다. 血中乳酸濃度 對 QO_2의 比는 對照에 比해 1 및 3時間에는 有意하게 높았고, 6 및 12時間에는 有意하게 낮았다. 組織의 QO_2 對 血中乳酸濃度의 比는 對照에 比해 ethanol 投與後 1時間에 有意하게 높다가 3時間에는 有意하게 낮으며, 다시 6 및 12時間에는 有意하게 높은 후 漸次 낮아져 24時間에는 特히 腎과 脾가 有意하게 낮았다. 組織의 QO_2×血中乳酸濃度에서 對照에 比해 ethanol 投與後 1 및 3時間에는 有意하게 높다가 漸次 減少하여 脾는 12時間에 有意하게 낮았다. 肺容積은 ethanol投與後 1∼2時間에서 낮은 壓力下에서는 대체로 正常보다 낮았고, 높은 壓力下에서는 對照値와 비슷했으며, 24時間에는 모든 壓力下에서 對照와 거의 같은 값을 나타내었다. 肺容壓率은 ethanol投與後 3時間까지 對照보다 增加된 후 그 後 次次 減少하였다. 以上을 綜合해 보면 血中 ethanol 濃度가 0.72gm/㎗ 가 될 程度의 高濃度 ethanol을 投與해서도 QO_2가 增加되며, ethanol投與 1∼3時間에 最高値를 나타낸 事實과 ethanol 投與로 因한 血中乳酸濃度의 增加에서 1時間에 最高値에 達한 점, 그리고 肺容壓率이 ethanol 投與 初期에 增加를 보이고 肺容積이 ethanol 投與後 24時間에 거의 對照値로 되돌아온다는 事實等은 意義있는 結果인 것으로 思料되는 바이다. In order to elucidate the effect of ethanol (EOH) administration on the oxygen consumption rate (QO_2) of some vital organs and lung compliance, ??a single dose of 1.5㎖ of 50% EOH per 100gm of body weight was administered orally to rats, and QO_2 of the liver, kidney, brain and spleen, and blood lactate level and lung compliance were measured from 1 hr to 24 hrs after EOH ingestion. The results were compared with the control group and summarized as follows: QO_2 of the liver was significantly elevated from 1 through 6 hrs after EOH ingestion compared with the control value of 2.11 0.10㎕O_2/hr/㎎ dry weight (D.W. ). The values at 1 and 3 hrs were 2.81±0.15 and 2.81±0.07㎕O_2/hr/㎎D. W. both being the peak levels, respectively. QO_2 of the kidney was significantly elevated from 1 through 12 hrs compared with the control value of 5.33±0.26㎕O_2/hr/㎎D. W. The value at 3 hrs showed the heighest value of 7.47±0.32㎕O_2/hr/㎎ D. W. QO_2 of the brain was significantly elevated from 1 through 6 hrs compared with the control value of 4.20±0.14㎕O_2/hr/㎎D. W. The value at 3 hrs showed the peak level of 5.53±0.29㎕O_2/hr/㎎D. W. QO_2 of the spleen was significantly elevated from 1 through 6 hrs compared with the control value of 3.55±0.13㎕O_2/hr/㎎D. W. The peak level was 5.81 0.23㎕O_2/hr/㎎D. W. at 3 hrs. Thus, QO_2 of the liver, kidney, brain and spleen were uniformly elevated after EOH ingestion showing the peak level at 3 hrs and returning to the control level by 12 or 24 hrs. Also, among the studied organs, the kidney showed the highest QO_2 value, followed by the brain, spleen and liver in the order named. The blood lactate was also elevated significantly at 1 and 3 hrs after EOH ingestion, the figures being 24.36 2.70 and 22.48 3.21 ㎎/㎗, respectively, compared with the value of 12.57±0.47 ㎎/㎗. The blood lactate vs. QO_2 ratio was significantly elevated at 1 and 3 hrs after EOH ingestion and was significantly lowered at 6 and 12 hrs aompared with control. The QO_2 vs. blood lactate ratio was significantly elevated at 1 hr after EOH ingestion, significantly lowered at 3 hrs, significantly elevated at 6 and 12 hrs, again significantly in the kidney and spleen, lowered at 24 hrs compared with the control value. The product of QO_2 times the blood lactate was significantly elevated at 1 and 3 hrs after EOH ingestion and gradually lowered subsequently, and significantly lowered in the spleen at 12 hrs compared with the control value. The dynamic lung volume from 1 to 2 hrs after EOH ingestion compared with the control was smaller under lower pressures but similar under higher pressures. At 24 hrs after EOH ingestion it was almost the same as the control under all pressures. The lung compliance was increased until 3 hrs after EOH ingestion but was decreased gradually thereafter. From the above, we should note that the QO_2 is increased by ingestion of EOH as concentrated as 0.72gm/㎗ showing its peak value from 1 to 3 hrs after ingestion, that the blood lactate is increased by EOH ingestion with the peak at 1 hr, and that the lung compliance is increased during the initial period with the dynamic lung volume returning almost to the control value in 24 hrs after EOH ingestion.