운동 직후 고온 침수가 EPOC와 TG/ fatty acid cycling에 미치는 영향

조현철,김종규,강민철,홍완표,박노혁 龍仁大學校 體育科學硏究所 2005 體育科學硏究論叢 Vol.15 No.1

The purpose this study was to estimate effects of EPOC and TG/fatty acid cycling on warm water immersion of immediately after exercise. To elucidate the role of fatty metabolism, a sequence of five experiments was performed. Seven physically active, male subjects volunteered to participate in the presented study. The mean values for age, body mass and hight were 25±1.52 yr, 79.2±9.52kg, 177.2±4.62cm, respectively. After giving consent, participant visited the laboratory on six occasion: 1) 30min of treadmill exercise VO2max 55% and a further 60min recovery, 2) 30min partial body warm water immersion in a 39℃ and a further 60min recovery, 3) 30min whole body warm water immersion in a 39℃ and a further 60min recovery, 4) 30min of treadmill exercise VO2mas 55% and in 30min partial body warm water immersion in a 39℃, 5) 30min of treadmill exercise VO2max 55% and in 30min whole body warm water immersion in a 39℃. When compared by recover period within repeat on the base of changes of subjects average body temperature, not effective interactions among repeat. However, partial and whole body warm water immersion immediately after exercise shows it as the best effective exercise for VO2max 55%, partial and whole body warm water immersion. When compared by recover period within repeat on the base of changes of subjects EPOC, effective interactions among repeat(p<.05). Partial and whole body warm water immersion immediately after exercise shows it as the best effective exercise for VO2mas 55%, partial and whole body warm water immersion. The catecholamines concentration was significantly higher partial and whole body warm water immersion than exercise of VO2max 55%(p<.05). The TG concentration and free fatty acid was significantly higher partial and whole body warm water immersion immediately after exercise than exercise of VO2max 55% than Partial and whole body warm water immersion(p<.05). Based on the facts that we have discussed above, human metabolism is increased by both exercise and conditions of immersion and partial and whole body warm water immersion immediately after exercise than exercise of VO2maw 55% shows it as better effective treatment for increasing TG/Fatty acid cycling activation. Due to extremely heavy stress complained by subjects during whole body immersion, it is thought that more researches on it should be required.

실험적 급성 허혈성 신부전에서 Verapamil 이 혈중 Polyamine 동태에 미치는 영향

원동준(Dong Jun Won),권현민(Hyun Min Kwon),김용섭(Yong Seop Kim),구자룡(Ja Ryong Gu),권영주(Young Ju Kwon),조원용(Won Yong Cho),김형규(Hyung Kyu Kim) 대한내과학회 1991 대한내과학회지 Vol.40 No.6

N/A It has been proposd that calcium entry from an external medium increases intracellular free calcium to toxic levels during ischemic acute renal failure, and verapamil (ARF) has been suggested as the agentblocking calicium entry into renal cells and protecting renal function during ischemic injury. Polyamines, anorganic cations that play various roles in normal cellular proliferation and differentiation, accumulate in renal failare. Alsa it has been suggested tht the synthesis and metabolism of polyamine are influence by acute changes of the general condition, such as acute renal failure, and are mediated by a calcium influx into the cells. The study was designed to study the protective effects of systemic verapamil pretreatment on renal function and the influence on polyamine metabolism in experimental ischemic ARF in cats. For these purpose, the experimental animals were divided into 2 groups. While Group I (n=5) was an ischemic ARF model by renal artery clamping for 60 minutes, Group II (n=5) was ischemic ARF with systemic verapamil (5 ml/min/kg) pretreatment. The creatinine clearance and plasma and urinary polyamine were measured in each group before and after the renal artery clamp. The results were as follows: 1) Creatinine clearance before and after the renal artery clamp were 10.64±7.18 ml/min/kg and 2.09±1. 70 ml/min/kg in Group I, 4.47±3.38 ml min/kg and 0.60±0.79ml/min/kg in Group II, respectively, So creatinine clearance decreased more significantly in Group II campared with Group I. 2) Plasma polyamine increased after ischemia in Group I. In group I, plasma levels of putrescine, spermidine, and spermine before ischemia were 4.75±0.40 nmol/ml, 0.69±0.09 nmol/ml, and 0.83±0.63 nmol/ml, were elevated to 7.17±2.91 nmol/ml, 9.83±1.46 nmol/ ml, and 2.64±1.14nmol/ml after ischemia. But in Group II, the plasma level of polyamine was not changed, and especially, spermine decreased significantly from 0.83±0.27 before ischemia to 0.49±0.23 nmol/ml after ischenmine (p=0.033). 3) Urine polyamine excretion decreased after ischemia in Group I and Group II. In Group II, urinary excretion of spermidine and spermine before ischemia, 0.13±0.10 nmol/min and 0.17±0.13nmol/min, decreased after ischemia to 0.01±0.01nmol/min (p=0.019) and 0.032±0.26 nmol/min (p=0.0257). 4) In renal tissue, spermine content vas highest. In Group II, preischemic spermine were 397.20 nmol/g and increased to 646.66nmol/g after ischema, But there were no significant changes in the polyamine contents in Group II. From these data, it was suggested that systemic verapamil pretreatment exerts no protective effect on ischemic ARF. Plasma polyamines are elevated in ischemic ARF, and verapamil may protect these elevations.

상아질 접착제의 용매 증발이 접착 효율에 미치는 영향

조민우,김지연,김덕수,최경규 大韓齒科保存學會 2010 Restorative Dentistry & Endodontics Vol.35 No.5

연구목적: 본 연구는 상아질 접착제의 잔류 용매가 접착 효율에 미치는 영향을 평가하고자 하였다. 연구 재료 및 방법: 본 연구에서는 5세대 2단계 산부식형 접착제와 7세대 단일과정 자가부식형 접착제를 사용하였다. 상아질 접착제의 증발률과 전환률, 적용 후 용매의 공기건조 방법에 따른 미세인장결합강도를 측정하였으며 접착 계면을 FE-SEM을 이용하여 관찰하였다. 결과: 1. 시간에 따라 접착제의 증발률은 증가하나 접착제의 종류에 따라 증가 양상이 서로 달랐다. 2. 대부분 전환률은 증발률에 비례하는 경향을 나타내었다. 3. 공기건조 방법에 따라 결합강도는 대부분 under군, control군, over군 순으로 증가하는 양상을 나타내었다. 4. FE-SEM에서 아세톤을 용매로 사용하는 접착제는 공기건조 방법에 따라 droplet이나 gap이 관찰되었다. 결론: 상아질 접착제의 잔류 용매는 접착 효율에 부정적인 영향을 미치기 때문에, 상아질 접착제의 선택과 사용 시 용매의 종류와 특징에 대한 적절한 이해가 필요할 것이다. Objectives: The purpose of this study is to evaluate bonding efficacy by means of measuring the effect of remained solvent on Degree of conversion(DC) and μTBS and FE-SEM examination. Materials and Methods: Two 2-step total etching adhesives and two single-step self etching adhesives were used in this study. First, volume weight loss of 4 dentin adhesives were measured using weighting machine in process of time in normal conditions and calculate degree of evaporation (DE). Reaction/reference intensity ratio were measured using micro-Raman spectroscopy and calculate DC according to DE. Then 2 experimental groups were prepared according to air-drying methods (under, over) and control group was prepared to manufacturer's instruction. Total 12 groups were evaluated by means of micro tensile bond strength and FE-SEM examination. Results: Degree of evaporation (DE) was increased as time elapsed but different features were observed according to the kind of solvents. Acetone based adhesive showed higher DE than ethanol and butanol based adhesive. Degree of conversion (DC) was increased according to DE except for S³ bond. In μTBS evaluation, bond strength was increased by additional air-drying. Large gaps and droplets were observed in acetone based adhesives by FE-SEM pictures. Conclusions: Additional air-drying is recommended for single-step self etching adhesive but careful consideration is required for 2-step total etching adhesive because of oxygen inhibition layer. Evaporation method is carefully chose and applied according to the solvent type.

플라이애시를 다량 사용한 콘크리트의 수화발열 특성과 압축강도 특성에 관한 실험적 연구

조규현,박무영,백민수,김우재,임남기,정상진 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2

This study is for the great quantity use of fly-ash. For the producing of high volume concrete from the use of fly-ash, the method of replacement between bonding agents and fine aggregate by fly-ash at the slt was used that the adiabatic temperature rise of concrete about the mass member which bad been produced by the method that was mentioned before, and the hydration heat of the core test pieces in concrete was measured. Also the core test pieces which were replaced with fly-ash was studied by the compressive strength's comparison between standard care test pieces and core test pieces. In the case of mass test pieces, hydration heat and the time to reach the highest temperature were decreased by an increase in replaced fly-ash's amounts of concrete. In addition, among the test pieces having the same amounts of concrete, the test pieces having more replaced amounts of fly-ash's fine aggregate showed higher hydration heat and the increased time to reach the highest temperature. Compressive strength was also increased by hydration heat's decrease according to fly-ash replacement. Replacement of fly-ash was more effective in high temperature environment.

프로축구 선수들의 포지션별 유산소성 파워능력과 슬관절 등속성 근 기능의 특성

조현철,김준호,강민철,김종규 龍仁大學校 體育科學硏究所 2004 體育科學硏究論叢 Vol.14 No.1

The purpose this study was to investigate the aerobic power and isokinetic muscular function of knee joint for korea the pro-soccer players in field position. Data were obtained from thirty one pro-soccer players. They didn't have any medical problem. They performed exercise stress test and isokinetic muscular function on treadmill and Isomed 2000. The assessment of cardiorespiratory and isokinetic muscular function were VO2max, Maximal heart, ATVO2, AT heart rate, Total Work, Average Work, Maximum Torque, Maximum Work and Flex/Ext. A two-way analysis of variance with repeated measures(two-way(2x4)RM ANOVA) was used to compare group and field position differences aerobic power and isokinetic muscular function. A Tukey post hoc test was used when significant mean differences were observed. Statistical significance was accepted as p<O.05. Aerobic power do not showed any significant difference among in field position. Hamstring muscle power was significantly higher in Forward and Middle field than Defense and Goal keeper. Muscular endurance was higher Defense and Goal keeper than Forward and Middle field. Based on the facts that we have discussed, aerobic and anaerobic power in field position do not showed any difference. However, isokinetic muscular function was significant difference in field position. Ratios of conventional and functional for isokinetic Hamsting: Quadriceps muscle strength in soccer player for prediction and decision injures, it is thought that more researches on it should be required.

全南住民에 있어서 惡性腫瘍의 統計的 觀察 (第2報)

曺圭赫,柳柱容,尹康爀,鄭相愚,梁東旭,李珉撤,崔燦 全南大醫大 1983 전남의대학술지 Vol.20 No.4

레진시멘트의 접착 내구성에 관한 연구

조민우,박상혁,김종률,최경규 대한치과보존학회 2007 Restorative Dentistry & Endodontics Vol.32 No.4

高等學校 數學敎育 內容 및 課程에 關한 硏究 : 現行 8種 敎科書의 問題 難易度別 比較分析

조규민,이을하 대구대학교 부설 과학교육연구소 1992 과학교육 Vol.5 No.-

전해 인프로세스 드레싱을 이용한 Optical glass계의 경면연삭에 관한 연구

조주현,원종호,박원규,이진오,김민수,김성수 한국공작기계학회 2003 한국공작기계학회 춘계학술대회논문집 Vol.2003 No.-

Electrolytic In-process Dressing (ELID) technique for metal bonded diamond grinding wheel has been developed for mirror surface grinding of hard and brittle materials. This study process optical glass in using Electrolytic In-process Dressing. In using to main variable wheel speed(400 rpm ~ 2000 rpm), feed rate(5 μm/min ~ 25 μm/min), depth of cut (3 μm - 15 μm), dressing and spray. we measured surface roughness by Form Talysurf series2. we finded optimum grinding condition to obtain confident surface roughness in representative brittle materials.

Dewey와 Bruner의 敎育過程에 대한 比較 考察

曺秉奎,金敏男 경북대학교 교육대학원 1973 논문집 Vol.4 No.-

It is said that we commit a fault when understood and utilized the theories or conceptions of education in seperation. The purpose of this paper is the establishment of the controversy issue and the search of common features between Dewey and Bruner. ⑴ Quality of experience and Structure: This topic starts under the assumption that Bruner's structure is included within the concept of quality in Dewey. The structure has been apprehended at a time in course of our being interacted with the object. We have had "idea" while devotion of ourself to a puzzle problem. The structure is composed of this idea. Thus, it seems to be included both the subfective conditions (feel) and the objective conditions. ⑵ Interest and Discover: It is known that the educative process in Bruner is systematic in comparison with Dewey's theory. So is the educative process as developmert of interest in Dewey. Its theoritical foundations are brought forward; ⑴ Interest is dependent upon Grouth. ⑵ Interest is working for translation the practical side into the theoritical side. ⑶ By action of interest is acquired the experience in general. ⑷ Through interest we can have knowldeges or concepts omitting the direct experience. ⑸ Interest has the autonomy. ⑹ Interest has the action with the thought. But There is a remarkable contrast between the two in the purposes and background of philosophy. For Dewey, the educative process is individualistic, and is common in Bruner. The former has the noministic view, the subject and the object, idea and data, child and curriculum, interest and effort, while the latter emphasizes the higher mental ability-the dualistic view.