• 한국환경보건학회지
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• 제37권2호
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• pp.102-112
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• 2011

Objectives: The purpose of this study is to analyze the effects of chronic exposure by welders to manganese (Mn) through an analysis of the degree of brain activity in different activities such as cognition and motor activities using the neuroimaging technique of functional magnetic resonance imaging (fMRI). The neurotoxic effect that Mn has on the brain was examined as well as changes in the neuro-network in motor areas, and the usefulness of fMRI was evaluated as a tool to determine changes in brain function from occupational exposure to Mn. Methods: A survey was carried out from July 2010 to October 2010 targeting by means of a questionnaire 160 workers from the shipbuilding and other manufacturing industries. Among them, 14 welders with more than ten years of job-related exposure to Mn were recruited on a voluntary basis as an exposure group, and 13 workers from other manufacturing industries with corresponding gender and age were recruited as a control group. A questionnaire survey, a blood test, and an fMRI test were carried out with the study group as target. Results: Of 27 fMRI targets, blood Mn concentration of the exposure group was significantly higher than that of the control group (p<0.001), and Pallidal Index (PI) of the welder group was also significantly higher than that of the control group (p<0.001). As a result of the survey, the score of the exposure group in self-awareness of abnormal nerve symptoms and abnormal musculoskeletal symptoms was higher than those of the control group, and there was a significant difference between the two groups (p<0.05, respectively). In the correlation between PI and the results of blood tests, the correlation coefficient with blood Mn concentration was 0.893, revealing a significant amount of correlation (p<0.001). As for brain activity area within the control group, the right and the left areas of the superior frontal cortex showed significant activity, and the right area of superior parietal cortex, the left area of occipital cortex and cerebellum showed significant activity. Unlike the control group, the exposure group showed significant activity selectively on the right area of premotor cortex, at the center of supplementary motor area, and on the left side of superior temporal cortex. In the comparison of brain activity areas between the two groups, the exposure group showed a significantly higher activation state than did the control group in such areas as the right and the left superior parietal cortex, superior temporal cortex, and cerebellum including superior frontal cortex and the right area of premotor cortex. However, in nowhere did the control group show a more activated area than did the exposure group. Conclusions: Chronic exposure to Mn increased brain activity during implementation of hand motor tasks. In an identical task, activation increased in the premotor cortex, superior temporal cortex, and supplementary motor area. It was also discovered that brain activity increase in the frontal area and occipital area was more pronounced in the exposure group than in the control group. This result suggests that chronic exposure to Mn in the work environment affects brain activation neuro-networks.

• 한국융합학회논문지
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• 제9권4호
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• pp.85-91
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• 2018

본 연구는 독거노인을 대상으로 독거노인의 외로움에 대한 경험을 분석하기 위한 포커스그룹 면담을 적용한 질적내용분석 연구이다. 본 연구 대상자는 D시 노인복지관을 방문하는 65세 이상 독거노인 28명을 대상으로 수행하였다. 연구대상자는 28명의 대상자를 5그룹으로 나누어 각 그룹 당 50-70분의 면담을 진행하였으며, 연구대상자의 연구참여 자발성에 대해 충분히 설명하였다. 본 연구결과 '피할 수 없는 쓸쓸함', '어쩔 수 없는 죽음', '내 삶의 수용' 인 3개의 주제모음과 '배우자의 부재', '자녀를 위한 독립', '주변인(친구)의 죽음', '홀로 남겨진 죽음의 두려움', '내려놓기', '내 건강 챙기기', '나만의 방식으로 외로움 달래기' 의 7개 주제가 도출되었다. 본 연구에 참여한 독거노인 연구대상자들은 어쩔 수 없는 외로움에 대해서 표현하였고, 스스로 외로움을 극복하기 위한 노력도 표현하였다. 본 연구결과를 토대로 추후, 독거노인의 심리적 외로움 극복을 위한 다양한 방안 개발이 필요할 것으로 사료된다.

• Asian-Australasian Journal of Animal Sciences
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• 제28권9호
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• pp.1259-1265
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• 2015

The present study was performed to study the genetic relationship of productive life with production and type traits of Korean Holsteins at first three lactations. The data for the analysis from 56,054, 28,997, and 11,816 animals of first, second and third parity cows which were born from 2006 to 2011 were collected by Dairy Cattle Improvement Center, National Agricultural Co-operative Federation. Milk, protein and fat yields adjusted for 305 days and average somatic cell score considered as production traits and analyzed type traits were stature, strength, body depth, dairy form, rump angle, rump width, rear leg side view, foot angle, front attachment placement, rear attachment height, rear attachment width, udder cleft, udder depth, front teat placement and front teat length. A multi trait genetic analysis was performed using Wombat program with restricted maximum likelihood animal model composed of fixed effect of birth year, farm and the random effect of animal and random residual effect according to the traits. Heritability estimates of productive life were between 0.06 and 0.13. Genetic and phenotypic correlations between production and productive life traits ranged from 0.35 to 0.04 for milk, 0.16 to 0.05 for protein and 0.18 to 0.02 f 15-0034 (2nd) 150520 or fat. Somatic cells score showed a negative genetic and phenotypic correlation with productive life and also udder type traits, indicating that the selection for higher udder traits will likely to improve resistance to mastitis and persistence in the herd. Among all dairy form type traits, udder characters such as udder cleft showed a significant relationship with productive life. However, a specific change of heritabilities or correlations were not observed with the change of parity. Moreover, further studies are needed to further confirm the significance of the above traits and the effect of parity on above relationships in order to minimize both voluntary and involuntary culling rates while improving herd health and maintaining high yielding dairy cows.

• Journal of Hospice and Palliative Care
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• 제16권2호
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• pp.90-97
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• 2013

목적: 본 연구는 정부가 호스피스완화의료를 제도적으로 지원하겠다고 발표한 2002년 이후 10년이 지난 현시점에서 일반 대중들의 웰다잉에 대한 인식과 수용도가 어떤 방향성을 띄는지 알아보고자 하였다. 이를 통해 향후 한국 호스피스 완화의료 정책이 나아갈 길을 제시하는 것을 목표로 하였다. 방법: 2012년 6월 1일부터 6월 11일까지 전국 만 20~69세 성인 남녀 1,000명을 대상으로 Computer-Assisted Telephone Interviewing (CATI)를 이용하여 웰다잉에 대한 인식 및 수용도에 관한 설문을 실시하였다. 조사 항목은 인구학적 특성 전반과 신체적, 정신적, 사회적, 영적 건강상태 등 건강에 대한 인식, 그리고 아름다운 삶의 마무리에 대한 정책적 선호도로 구성하였다. 결과: 아름다운 삶의 마무리를 위한 제1 중요 요소로는 다른 사람에게 부담을 주지 않음이 36.7%로 가장 많았다. 제2 중요 요소로는 가족이나 의미 있는 사람과 함께 있는 것이 19.1%로 가장 높은 비율을 차지하였다. 죽음과 관련하여 삶의 아름다운 마무리를 위한 9가지 전략의 선호도를 조사한 결과, 간병 품앗이 활성화에 대해 찬성하는 의견이 88.3%로 가장 많았으며 의료인의 임종환자 관리 교육 실시(83.7%), 장례식장 대신 가족들을 편하게 해주고 의료진이 환자를 돌볼 수 있는 시설을 병원/집에서 가까운 곳에 마련(81.7%)이 그 뒤를 이었다. 삶의 아름다운 마무리를 위한 5개년 국가 전략을 수립하는 것에 찬성한 비율은 전체의 91%로 매우 높은 수준이었으며 그 수행 주체로는 정부(47.5%), 국회(20.2%), 시민 단체(10%)순인 것으로 조사되었다. 결론: 일반 국민 1,000명을 대상으로 조사한 본 연구결과는 국가적 차원의 웰다잉 정책과 완화의료의 제도적 지원책을 마련하는데 초석이 될 수 있을 것이다.