방사선 치료실의 실내 구조와 산란선 측정에 관한 연구

김민애(Minae Kim),권용대(Yongdae Kwon),제재용(Jaeyong Je) 한국방사선학회 2012 한국방사선학회 논문지 Vol.6 No.3

본 연구는 방사선 치료실 내부에 알루미늄 요철 크기가 다른 구조물을 부착하여 방사선 조사 중 발생되는 산란선량을 알아보고자 한다. 알루미늄 요철구조물을 방사선 치료실 벽면에 부착하고, 방사선 조사 중 발생하는 산란선을 측정 대상으로 하였다. 알루미늄 요철의 크기는 1.5×1.5, 3×3, 5×5 ㎠이고 크기는 가로×세로가 60×60 ㎠ 이다. 산란선 측정을 위한 TLD와 치료실 벽면까지의 거리는 310 ㎝이며 사용된 방사선 에너지는 선형가속기에서 발생되는 6 ㎹, 15 ㎹ 이다. 실험 결과 6 ㎹에서는 조사선량이 100, 300 cGy에서는 알루미늄 요철 구조물을 설치함으로써 산란선이 감소되었으나 200 cGy에서는 5×5 ㎠의 요철구조물에서만 산란선이 감소되었다. 15 ㎹에서는 조사선량이 200, 300 cGy에서는 알루미늄 요철구조물을 설치함으로써 산란선이 감소되었으나 100 cGy에서는 요철구조물에 상관없이 비슷한 결과 값을 나타 내었다. 따라서 실내구조에 부가적으로 알루미늄 요철 구조물을 설치하는 것이 방사선 치료실 벽면에서 발생하는 산란선과 환자의 확률적 영향을 감소시킬 수 있는 방법이라 할 수 있다. This research aims at examining the amount of scattered radiation generated during irradiation by adhering structures with different sizes of aluminum prominence and depression to the inside of a radiotherapy room. The irregular aluminum structures were stuck to the wall of a radiotherapy room, and the scattered radiation generated during irradiation was measured. The sizes of the aluminum prominence and depression were 1.5×1.5, 3×3, and 5×5 ㎠ with the width of 60 ㎝ and the height of 60 ㎝. The distance between TLD and the wall of the radiotherapy room to measure scattered radiation was 310 ㎝, and the used radiation energy was 6 ㎹ and 15 ㎹ generated from a linear accelerator. The research result showed that the irradiation amount at 6 ㎹ was 100, and at 300 cGy the scattered radiation decreased by the installation of the structure with aluminum prominence and depression, but at 200 cGy, only the scattered radiation of the uneven structure of 5×5 ㎠ decreased. At 15 ㎹, the irradiation amount was 200 cGy, and at 300 cGy, the scattered radiation was reduced when the rugged aluminum structure was set up, but at 100 cGy, similar result values were produced regardless of the uneven structure. Consequently, installation of an additional structure with aluminum prominence and depression in the present interior structure can decreased the stochastic effect of the scattered radiation generated from the wall of a radiotherapy room and patients.

오페라의 소재로서의 메르헨

김민애(Minae Kim) 낭만음악사 2008 낭만음악 Vol.20 No.3

오페라는 문학과 밀접한 관계를 맺고 있다. 극적인 서사, 다양한 캐릭터, 시적 가사 같은 요소들은 오페라를 문학과 가깝게 만든다. 오페라의 가장 기본적인 매력은 이야기의 힘에 있다고 해도 과언이 아니다. 따라서 오페라의 대본이 되는 이야기에 대한 이해는 오페라를 더 깊이 있게 해석하는 데 도움이 될 수 있다. 이 글은 오페라가 꽂을 피웠던 낭만주의 시대에 그 오페라의 소재가 되었던 문학, 특히 메르헨을 분석함으로써 오페라를 보다 잘 이해할 수 있기를 희망한다. 메르헨은 낭만주의 시대 중요한 문학이었다. 현실과 초현실, 이성과 감성, 합리성과 신비성이 결합하는 메르헨은 인간의 집단무의식을 드러내고, 이상을 현실화시키는 이야기이다. 오페라는 논리적인 이야기 구조와 감성적인 음악을 통해 메르헨의 문학적 특성을 음악적으로 바꾼다. 오페라 <신데렐라>, <헨젤과 그레텔>, <루살카>는 그림 형제의 메르헨 <신데렐라>, <헨젤과 그 레텔>, 안데르센의 창작메르헨(Kunstmarchen) <인어 공주>를 새롭게 해석하고 재창조한 작품이다. 오페라에서는 메르헨의 몇몇 모티프가 누락되고 변형되며 다른 모티프가 첨가된다. 그리하여 메르헨의 극적인 환상 세계는 보다 현실적으로 바뀌고, 심리적인 깊이는 현실적인 아이러니로 대체되는 것을 확인할 수 있다. This study examines Marchen as a text of opera. The German term Marchen, used universally by folklorist, embraces tall tales and humorous anecdotes; although it is often translated as "fairy tale", the fairy is not a requisite motif. Marchen characterized by elements of magic or the supernatural, such as the endowment of a mortal character with magical powers or special knowledge; variations expose the hero to supernatural beings or objects. Opera closely relates to literature. The elements such as dramatic narrative, various character, poetic words make a deep impression on audience. So the understanding about the text of opera is essential to appreciation of opera. This study intends to enlarge the range of appreciating opera by analyzing Marchen in Romantic Age when opera prospered. Marchen combined with reality & surreality, reason & sensibility, and rationality & mystery is a story which reveals mass unconsciousness and realizes one's ideal. Opera changes the character of literature in Marchen into musical one with logical story structure and emotional tune. Opera <Cinderella>, <Hansel and Gretel>, and <Rusalka> are works which were interpreted and recreated <Cinderella>, <Hansel and Gretel> written by Brothers Grimm and <The little mermaid> written by Hans Christian Andersen. Several motives of Marchen in opera are left out, reformed and added to different motives. As a result, we can confirm that the dramatic fantasy of Marchen is change into reality and the psychological description in Marchen is changed into real irony.

발열 환아 보호자의 응급실 방문 횟수에 영향을 미치는 요인

김민애(Kim, Minae),김나현(Kim, Nahyun) 한국기초간호학회 2022 Journal of korean biological nursing science Vol.24 No.1

Purpose: This study aimed to identify factors affecting the number of emergency department visits by caregivers of children with fever. Methods: Data were collected from 145 caregivers whose children aged six or less with two or more emergency department visits annually mainly because of fever. Collected data were analyzed with descriptive frequency analysis, independent t-test, Fisher exact, one-way ANOVA, Scheffé test, Dunnett T3, Pearson’s correlation, and stepwise multiple regression using SPSS 25.0 software. Results: Regression analysis results revealed that among factors influencing the number of emergency department visits by caregivers of children with fever were state anxiety (β=.35, p=.009), self-efficacy (β=-.29, p=.029), and gestational age of the children (β=.17, p=.010). These variables had an explanatory power of 42.3% concerning the number of emergency department visits. Conclusion: Our findings revealed that caregivers’ level of state anxiety and self-efficacy were major factors influencing the number of emergency department visits. It is expected that providing education concerning fever and emotional support for caregivers of children with fever can relieve their anxiety and enhance their self-efficacy levels, which in turn may reduce the number of unnecessary emergency department visits of children with fever and ultimately address the issue of over-crowding in emergency department.

알츠하이머병에서 혈장 크레아틴과 염증반응, 인지기능과의 연관성

김민애(Minae Kim),오대종(Dae Jong Oh),김현정(Hyunjeong Kim),조소연(So Yeon Cho),하정희(Junghee Ha),이준영(Jun-Young Lee),김어수(Eosu Kim),김근유(Keun You Kim) 대한노인정신의학회 2021 노인정신의학 Vol.25 No.2

Objective: Creatine, energy buffer in high energy demanding systems including muscle and brain, may play a beneficial role against neuroinflammation in Alzheimer’s disease (AD), and thus be a potential biomarker. This study aimed to compare the levels of plasma creatine between persons with and without AD and investigate associations of plasma creatine levels with cognitive function and blood-based inflammatory markers. Methods: We classified elderly participants by cognitive statuses: normal cognition (NC, n=17), mild cognitive impairment (MCI, n=21), and AD (n=21). To assess cognitive function and inflammatory condition, we performed neuropsychological tests and measured plasma C-reactive protein (CRP) levels, respectively. Results: Plasma creatine levels were comparable among participants with AD, MCI, and NC. In overall participants, plasma creatine levels were not associated with neuropsychological test scores, but negatively associated with plasma CRP levels. In AD group, plasma creatine levels were negatively associated with neuropsychological test scores and, although not significant, CRP levels (p=0.086). In participants without AD (NC plus MCI), these associations disappeared. Conclusion: Plasma creatine levels may not be useful as a biomarker indicating cognitive statuses. However, our results suggest that, in AD, plasma levels of creatine might reflect the extent of neuroinflammation as well as cognitive deterioration.

명상기반 중재의 보조도구로서 명상어플리케이션 개발

김완석(WanSuk Gim),김민애(MinAe Kim) 한국콘텐츠학회 2018 한국콘텐츠학회논문지 Vol.18 No.9

본 연구의 목적은 명상기반 중재 프로그램에서 자가수련을 촉진하기 위한 명상어플리케이션을 개발하고 그 효과를 검증하려는 것이다. 명상기반 중재 프로그램들은 대체로 자가수련을 강조하는데, 자가수련의 동기를 높이고 자가수련을 더 할 수 있도록 하는 것은 중요한 문제이다. A 대학 교양강좌에 참여한 대학생들을 대상으로 8주간 한국형 마음챙김기반 스트레스 감소(K-MBSR) 프로그램을 실시하였다. 실험집단(N = 22)은 명상어플리케이션을 제공하고 비교집단(N = 19)은 명상어플리케이션을 제공하지 않았다. 자가수련량은 참여자들이 기록한 수련일지를 토대로 수련시간을 계산하였다. 집단 간 심리적 효과의 차이를 확인하기 위해 마음챙김, 신체자각의 하위요인(감각자각, 감각복귀), 삶의 만족, 수용행동, 수면의 질을 사전과 사후에 측정하였다. 자가수련량은 실험집단이 비교집단에 비해 유의하게 더 많았다. 명상 효과는 실험집단이 비교집단에 비해 마음챙김, 신체자각, 삶의 만족, 수용행동, 수면의 질에서 더 높았다. 본 연구의 결과는 명상어플리케이션이 명상기반 중재 프로그램의 효과를 증진하는 보조수단으로서 유용함을 입증하는 것이다. 향후 연구를 위한 제언을 논의하였다. The purpose of this study is to develop a meditation application to promote home practice in a meditation-based intervention program and test its effects. In most cases, meditation-based intervention programs put an emphasis on home practice, which means it is an important matter to increase motivation for home practice and encourage people to do home practice more. The investigator administered an eight-week Korean Mindfulness-based Stress Reduction (K-MBSR) program to college students participating in a liberal arts course at A University. While the experiment group (N = 22) received a meditation application, the comparison group (N = 19) received no meditation application. The amount of home practice was measured based on the practice logs kept by the participants. The difference in psychological effects between the groups was checked by measuring mindfulness, subfactors (noticing and return to body) of body awareness, life satisfaction, acceptance action, and sleep quality before and after the experiment. The findings show that the experiment group recorded significantly greater amounts of home practice than the comparison group. As for the effects of meditation, the experiment group recorded higher points in mindfulness, body awareness, life satisfaction, acceptance action, and sleep quality than the comparison group. These findings demonstrate that a meditation application can be useful as a means of assistance to promote the effects of a meditation-based intervention program. The study also discussed proposals for a follow-up study.