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- 저자 : 이귀용 ( Gui Yong Lee ) (검색결과 5 건)
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이경수 ( Kyung Su Lee ),정태영 ( Tae Young Jung ),박철하 ( Chull Ha Park ),한주환 ( Ju Hwan Han ),이귀용 ( Gui Yong Lee ),구창덕 ( Chang Duck Koo ) 한국산림과학회 2012 한국산림과학회지 Vol.101 No.4
Berchemia berchemiaefolia is a rare and endangered species and important as a honey resource. The purposes of this study were to investigate physical environmental factors and the population and community structure of Berchemia berchemiaefolia stands at Mt.Gunja in Sogrisan National Park in Chungcheongbuk-do. The B berchemiaefolia stands belonged to deciduous forests in mid-temperate zone and were 5~25˚ in slope 30~90% in rock ratio and 6.37 in soil pH. They had 656 trees within the area of 36 ha and their average density was 18.2 trees per ha. The trees within the stands were 11.8m in tree height 22.6 cm in DBH and 56 years old. The number of branched stems was the maximum 8 and 32.9% of the trees were branched. B. berchemiaefolia trees over 12cm diameter occupied 89.9% but young B. berchemiaefolia did only 11%. The structure of B. berchemiaefolia stands were classified into three groups as Acer pseudo-sieboldianum & A. mono community group A. pseudo-sieboldianum & Quercus aliena community group and B. berchemiaefolia & Quercus serata community group. The mean importance value of B. berchemiaefolia was 10.9% while species diversity of the community ranged 0.77~1.31 and interspecific competition ranged 0.78~0.94. The dominance of the community ranged of 0.07~0.29 and the evenness ranged 0.71~0.93. Although B. berchemiaefolia was dominant in the habitat but the species was already in natural successional stage to cornus controversa or Ulmus davidiana var. japonica.
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경두개 도플러를 이용한 두부 하강 체위에 따른 뇌혈류 변화
이자경,한종인,정락경,이귀용,김종학,김치효,이춘희 梨花女子大學校 醫科大學 醫科學硏究所 1997 EMJ (Ewha medical journal) Vol.20 No.3
목적: 두부 하강 체위는 뇌혈류와 뇌압 및 혈역학적 변화를 초래한다고 알려져 있다. 이러한 체위 변동시 변화 정도에 따른 대뇌혈류 변화 정도와 뇌혈류의 자동 조절 기능의 발현 시간의 차이 정도를 알아보고자 한다. 방법: 건강한 성인 여자 12명을 대상으로 두 군으로 나누어 10˚(제1군) 또는 15˚(제2군) 두부 하강 체위를 취하게한 뒤 혈압, 심전도, 심박수, 호기말 이산화탄소 농도 및 경두개 도플러를 이용한 중대뇌 동맥 혈류 속도를 체위 변경전, 변경후 1,2,3,5,7,9,11분에 측정하여 비교, 분석하였다. 결과: 10˚ 및 15˚ 두부 하강 체위시와 각 체위간 뇌혈류 속도의 통계적으로 유의한 변화는 없었다. 제 1군에서 1,2분의 이완기 혈압, 5분의 평균 동맥압, 7분의 호기말 이산화탄소 농도 및 2군에서 5,7,9,11분의 수축기 혈압, 9분의 평균 혈압은 통계학적으로 의미있게 증가하였다. 결론: 심혈관계가 안정되고 뇌혈류나 뇌압의 이상이 없는 건강한 성인에서 각각 10˚ 와 15˚ 의 두부 하강 체위시 뇌혈류의 유의한 변화는 없었다. 그러나 혈역학적 변화는 임상적으로 유의하다고 할 수 없었으나 통계적으로 유의한 변화를 보였다. 따라서 심혈관계 질환을 가진 환자나 심혈관계가 불안정한 경우, 혹은 뇌질환이나 뇌손상이 있는 환자에서 HDT를 필요로 하는 경우에는 주의를 요하며 꼭 필요한 경우에는 15˚ 이내로 제한하는 것이 바람직하다고 할 수 있겠으며 체위 변동후 최초 10여분간 혈역삭적 변화에 주의를 기울여야 하겠다. Objectives : The head-down tilt(HDT) position infuses changes in cerebral blood flow, intracranial pressure, hemodynamic and respiratory system. This study was performed to evaluate the changes in cerebral blood flow and the onset of autoregulation according to the different degree of HDT. Methods : The subjects were 12 healthy adult female volunteers. They were divided two groups : 10˚ HDT(group 1) and 15˚ HDT(group 2). The systolic, diastolic and mean blood pressure, heart rate, end-tidal CO_2 concentration and cerebral blood flow velocity on middle cerebral artery by transcranial Doppler were measured before positioning and 1,2,3,5,7,9,11 minute after positioning. Results : There was no significant changes in cerebral blood flow velocities statistically according to the HDT under 15 degrees. In group 1, vean arterial blood pressure were increased at 5 minutes and returned to control value at 7 minutes after HDT with statistical significances. Diastolic blood pressure in group 1 were increased at 1 and 2 minutes after HDT with statistical significances. In froup 2, systolic blood pressure were increased at 5,7,9,11 minutes after HDT statistically significantly. Conclusion : There were no significant changes of cerebral blood flow under less than 15˚ HDT. But systolic blood pressure were increased with 15˚ HDT in the healthy adults statistically significantly(p<0.05) not but clinically. So, we suggested that if HDT is required, er should take care of the partients more than 10 minutes after HDT.
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Kofranyi-Michaelis meter와 Douglas bag을 이용한 활동 대사의 비교 연구
오구미,이귀용,전진숙 이화여자대학교 의과대학 1975 梨花醫學誌 Vol.- No.7
This study was carried out to introduce the Kofranyi-Michaelis (KM) meter that had been taken into Korea recently, and to compare the different experimental results between KM meter and Douglas bag in measuring the energy expenditure. Usual activities of 9 college girls in daily life were examined by KM meter and Douglas-Scholander method. The results were summerized as follows; 1. Energy expenditures of 3 of the 10 activities measured by KM meter were lesser, and those of 7 were more than those by Douglas bag. Because t-value was 8.62 (P<0.01), the difference was very highly significant. 2. Because the error percentage of drymeter was 7% and that of KM meter was 0.35%, the results using KM meter were more acurate than those by Douglas bag.
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