태권도 품새 수련이 아동의 심박수, 심근산소소비량, 에너지 대사에 미치는 영향

정성태,전태원,박익렬,정덕조,우재홍,이광희,이동기,강현주 서울대학교 체육연구소 2000 서울大學校 體育硏究所論集 Vol.21 No.1

The Taegeuk Poomse 1 through 8 of Taekwondo are based upon eight major branches of philosophical theories. The propose of this study was to investigate the nfluence of Taekwondo poomse trainning on heart rate, MVO2, energy metabolism in primary school students. Subjects for this study were eight male the fifth∼sixth grades students who participated in exercise program consist of Taekwondo poomse trainning in dojang which is located in Shinlim-2dong, Kwanak-Gu, Seoul(12.7± 0.5years, 150.8 ±4.6cm, 45.1 ± 9.4kg, 24.9 ± 9trainning length). The results of thet this study are as follows: 1) The average of heart rate was Taegeuk Poomse 1 through 8 of Taekwondo 90.57± 4.gbeats/min in rest and 139.7 ± 17.5beats/min in exercise. The minimum heart rate was 89.0±2.8, peak heart rate was 167.1 ±6.4 in exercise. It was ranged from 42% to 80% 2) of the max heart rate and ranged 42 to 65%HRmax. Taegeuk 1 Jang was differenced with others Jangs significantly(p<0.05), 2) The time of the Taegeuk 1 through 8 Jang of Taekwondo was 5minutes 12seconds. Heart rate was ranged from 90.6 ± 7.85beats/min to 171.8 ±8.Ibeats/min and increased linearly. 3) The average of the MVO2 was 11.1 ±0.78mmHg · bpm-3 in rest and 19.1 ± 1.2mmHg ㆍbpm-3 in exercise. MVO2 was ranged from 10.5mmHg · bpm-3 to 20.3mmHg · bpm-3. There were not difference between Taegeuk Poomses(p<0.05). 4) The energy metabolism was as follows: Mean VO2 Respiratory exchange ratio, energy consumption were 0.51(V02L/min),0.71(RQ),2.32Ckca1/min) in rest respectively. but In exercise Mean VO2 Respiratory exchange ratio, energy consumption were 0.89 ± 0.18( V 02L/min), 0.79±0.08(RQ), 4.26±0.51(kcal/min) respectively . The difference was only between Taegeuk 1 Jang and Taegeuk 3 Jang(p<0.05). This study showed that the Taekwondo Poomse trainning was proper exercise for fitness, body composition and weight control in normal, abnormal(obese) children because the Taekwondo trainning are dynamic and exciting sport.

ECAP 공정을 거친 1050 Al 합금 판재의 전기화학 특성에 관한 연구

정민경,최윤석,김정구,김영만,이재철,석현광 대한금속재료학회 2003 대한금속·재료학회지 Vol.41 No.8

The effect of equal channel angular pressing (ECAP) pass number on the electrochemical properties of AA 1050 (UNS A91050) in 0.1M Na₂SO₄ solution containing 100 ppm chloride were investigated by electrochemical techniques (potentiodynamic test, potentiostatic test, electrochemical impedance spectroscopy (EIS) and surface analyses (OM, SEM, EDS). The ECAPed specimens that have a various numbers of passes from N=l to N=5 were selected for electrochemical experiments in this study. The results of potentiodynamic test indicated that the breakdown potential increased with increasing the ECAP pass number. EIS measurements also showed that the corrosion resistance of the AA 1050 increased with increasing the ECAP pass number at the passivation and breakdown states. The results of surface analyses (SEM, EDS) showed that silicon-containing impurities were observed on the surface of the alloy. It was found that the size of these Si-containing impurities decreased with increasing the ECAP pass number. The Si-containing impurities induced the microgalvanic reaction(i) between the Al matrix and the Si-containing mixed oxide and (ii) between the Al matrix and the Si-containing impurities. Due to its ultrafine-grained microstructure, ECAPed AA 1050 had smaller Si-containing impurities, and reduced microgalvanic currents. Thus, in the case of ECAPed AA 1050, it has increasing corrosion resistance with increasing ECAP pass number because of its small cathodic impurities.

Dimethyl-β-Cyclodextrin을 이용한 Omeprazole의 대체투여경로 개발

정미분,박승현,김하형,이광표 중앙대학교 약학연구소 1996 약학 논총 Vol.10 No.-

For the purpose of increaing the stability and bioavailability of omeprazole(OME), inclusion complexes of OME with demethyl-β-cycoldextrin(DMβCD) and hydroxypropyl-β-cyclodextrin(HPβCD) were prepared by freeze drying method. The interactions of OME with DMβCD and HPβCD in aqueous solutions and in solid states were investigated by solubility study. IR spectroscopy and DSC. The type of OME-DMβCD inclusion complex was found to be classified as Bs-type on phase solubility diagram, and the stoichiometric ratio of OME-DMβCD incousion complex was a 1:2 and stability constant was 359.46M^-1. The OME-HPβCD inclusion complex appeare to be AL type. The stoichiometric ratio was found to be 1:1, and stability constant was 34M^-1. Clear differences in a IR spectra and DSC curves were observed between the inclusion complex formation at pH 6.8. The mean dissolution time(MDT). which represents the degree of the rapidity of dissolution rate, was increased in the order of OME-DMβCD I.C(0.60) < OME-HPβCD I.C.(0.71) < OME-DMβCD P.M.(7.23) < OME-HPβCD P.M.(10.06). In order to compare simultaneously the intrinsic absorptivity of OME in the jejunum and nasal cavity of rats, the in situ nasal and jejunal perfusion method was employed as a new trial. The in situ recirculation study revealed that OME-CDs inclusion complexes rate proportionally increased the absorption of OME in nasal cavity(N) and the jejunum(J) of rats. The decreasing order of apparent OME permeability(Papp:cm/sec×10-5), corrected for surface area of absorption was as follows : 8.77±0.18(N, OME-DMβCD). > 5.97±0.17(N. OME-HPβCD) > 4.84±0.02(J. OME-DMβCD). 3.50±0.25(J. OME-HPβCD) at IPB pH 7.4. The present results suggest that OME-DMβCD inclusion complex may serve as a potential means for the nasal delivery of OME.

초기 다발성 신경병증의 진단에 족지간 신경전도검사의 유용성에 관한 연구

이광우,이성현,정재면 대한신경과학회 1998 대한신경과학회지 Vol.16 No.2

치환용매 변화에 따른 비대칭 Ceellulose Acetate 막의 기체투과특성

정광보,장승현,남석태 한서대학교 산학협력연구원 부설 환경연구소 2000 환경연구소 논문집 Vol.3 No.-

Gas permeation behavior was examined for asymmetric cellulose acetate membrane prepared by changing the acetone evaporation time and drying solvent. By changing the acetone evaporation time, the gas permeation rate decreased for the first 2 minutes and then increased gradually for the membrane of i-PrOH exchange drying. Gas permeation rate was in the order of He>N₂>O₂ and separation factor was about 1.9 for the membrane of 9 minute acetone evaporation. The permeation mechanism appears to be the combination of Knudsen flow and viscous flow. The effect of Knudsen flow was increased with acetone evaporation time, while the effect of viscous flow increased for the membrane of EtOH exchange drying.

보건관리 대행사업 평가도구의 타당성, 신뢰도 및 인과관계 검증에 관한 연구

박정일,조병희,구정완,김광종,김현욱,원종욱,이명숙,정문희 가톨릭대학교 산업의학센터 2001 韓國의 産業醫學 Vol.40 No.1

In order to verify the validity, reliability and relativeness of preliminary evaluation tool for the group occupational health services(GOHS), a questionnaire survey for doctors, nurses and hygienists of 18 GOSH institutions, and employers, health managers and employees of 340 enterprises was conducted. A factor analysis and correlation test for the statistical validity of the variables in the evaluation tool, a Chronbach's Alpha value for the reliability in the evaluation indices and a regression analysis for the relations of the evaluation model were performed. The results were as follows: 1.In factor analysis, thirty-three variables among 43 variables were selected as significant variables, ie 9 out of 11 for input index, 11 out of 14 for throughout index and 13 out of 18 for out put index. 2.Three evaluation(outcome) scales(evaluation by employer, health manager and employee) which composed of 16 identical items were used. 3.The Chronbach's Alpha values of input, throughout, out put and outcome indices were 0.5221, 0.5473, 0.7122 and 0.8546 respectively. 4.Regression equations of independent variables on the evaluation scales of employer, health manager and employee were all statistically significant.

다원적 기법에 의한 중소기업의 자금조달 실태

권광현,정정현,현영하 昌原大學校 産業經濟硏究所 1996 産經硏究 Vol.13 No.-

유색미에 관한 연구 : Ⅲ. 유색미 유망계통에 대한 주요 생육 특성

김광수,최윤표,김선택,최현구,정종태,김보경,유지홍,이희봉 충남대학교 농업과학연구소 2007 농업과학연구 Vol.34 No.2

국내외 유색미 수집종을 돌연변이원에 의해 유기된 우수 계통과 수집종간 상호교배에 의해 선발된 CNU 20계통을 파종하여 얻어진 주요 작물학적 특성을 살펴보면 다음과 같다. 1. 간장은 유색 메벼인 CNU126 계통이 대조품종인 동진벼와 같이 가장 컸고 메성인 CNU 128계통에서 가장 작았다. 2. 주당 분얼수는 CNU3, CNU50. CNU56, CNU112 계통에서 가장 많았고 대조품종과 CNU 128 계통에서 10개 미만으로 가장 적게 나타났다. 3. 수장은 육성 계통 중 CNU88 계통에서 가장 길었으나 대조구보다 짧고, 육성계통 중에서는 CNU 126 계통이 가장 짧았다. 4. 주당 영화수는 대조구인 동진벼보다 CNU50 계통에서 2배 이상 많았고, CNU158 계통에서 가장 적게 나타났다. 5. 천립중은 CNU113 계통에서 30g이상으로 대조구와 같이 가장 무거웠고, CNU128 계통에서 20g으로 가장 적었다. 6. 주당 수량은 대조구의 26.6g에 비해 CNU50, CNU112 계통에서 두배정도 높았고, CNU128, CNU158, CNU200 계통에서 가장 낮게 타나났다. Aims of this study were carried out to develop the useful lines induced from mutation and pedigree breeding methods among the collected genetic resources from national and domestic areas. In this study, Stem height of CNU126 line and check among them were high, while CNU128 was lower than other lines. Spiklet length of CNU88 was longer, but that of CNU126 was shorter than check. Number of spiklets per plant of CNU50 among lines have twice time than check. 1,000 grains weight of CNU113 was higher than check. In yield per plant, CNU50 and CNU112 were higher than check, Dongjinbyeo.

Syntheses of New Azo Calix[4]arenes Containing Benzo Crown Ether

장승현,정광보 大邱大學校附設 基礎科學硏究所 1998 基礎科學硏究 Vol.15 No.1

New azo calix[4]arenes, 5-benzo-15-crown-5-azo-25,26,27,28-tetrahydroxy calix[4]arene(1), and 5,17-bis(benzo-15-crown-5-azo)25,26,27,28-tetrahydroxy calix[4]arene (2) were prepared by reaction of diazonium salt of 4-aminobenzo-15-crown-5 and clix[4]arene. 4-Aminobenzo-15-crown-5 was synthesized by reduction of 4-nitrobenzo-15-crown-5, obtained from the nitration of monobenzo-15-crown-5.

골아세포 MC₃T₃-E₁의 증식과 기능에 Insulin Like Growth Factor Ⅰ, Ⅱ 및 부갑상선 호르몬이 미치는 영향

윤현구,정호연,양인명,김성운,김진우,김광원,김영설,최영길,서광식 대한내과학회 1992 대한내과학회지 Vol.42 No.1

MC₃T₃-E₁골아세포군을 이용하여 IGF-Ⅰ과 Ⅱ를 투여하고 DNA합성과 골아세포기능을 측정하기 위해 PTH에 대한 C-AMP반응정도, alkaline phosphatase 활성도를 측정하여 다음과 같은 결과를 얻었다. 1) IGF-Ⅰ과 Ⅱ는 모두 DNA합성이 어느 농도까지는 증식효과를 나타내지만 그 이후에는 억제되는 양상을 보였다. 2) PTH에 대한 골아세포의 C-AMP반응으로 증가되었지만 IGF-Ⅰ과 Ⅱ의 투여시 농도변화에 따른 의미있는 변화는 없었다. 3) 본 실험의 조건에서 alkaline phosphatase 활성도는 증가되지 않았다. 이상의 결과로 MC₃T₃-E₁ 골아세포에 IGF-Ⅰ과 Ⅱ는 세포의 증식을 자극하여 PTH는 C-AMP생성을 촉진하는 효과가 있었다. The effect of insulin-like growth factor (IGF) Ⅰ and Ⅱ on cloned MC₃T₃-E₁ cells that had osteoblastic activity was examined by [³H] thymidine incorporation into DNA, cyclic AMP responsiveness to parathyroid hormone (PTH), and alkaline phosphatase activity. IGF Ⅰ and Ⅱ stimulated the growth and proliferation of osteoblastic cells at 20ng/㎖ and 50ng/㎖, respectively. We next examined the effect of IGF-Ⅰ and Ⅱ on the expression of osteoblastic activity. Adenylate cyclase response of PTH to IGF-Ⅰ and Ⅱ-treated cells showed maximal stimulation at 10 and 50㎚PTH, respectively, but IGF Ⅰ and Ⅱ induced limited activity of osteoblastic function. In conclusion, IGF-Ⅰ and Ⅱ were potent stimulators to the growth of osteoblastic cells but did not have an immediate effect on expression of osteoblastic function in this experiment.