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안수연 노인간호학회 2007 노인간호학회지 Vol.9 No.1
The purpose of the study was to identify levels of Activities of Daily Living (ADL), Instrumental Activities of Daily Living (IADL) and cognition in elders living alone. The participants in this study were 572 elders registered for 'The Project of Home Visiting Care in 2004' of two public health centers in Korea. Each scale was developed for the project was based on original scales. The collected data were analyzed using SPSS Win 11 version to obtain summary statistics for the descriptive analysis, and Pearson correlation coefficients. The score for ADL was 11.82 out of 12 and IADL, 15.48 of out 16. The scores for toileting (t=2.852, p=.005) and stair climbing (t= 2.049, p=.042) were lower in women than in men. Stair climbing (F=t=4.682, p=.010), money management (F=3.427, p=.033), using telephone (F=3.728, p=.025), grocery shopping (F=6.012, p=.003), and transportation (F= 8.069, p=.000) were significantly different according to age. The cognition level did not differ according to sex but differed according to age (F=5.804, p=.004). ADL and IADL were positively correlated with subjective health status but not related to cognition. The findings of this study provide practical guidelines for supporting elders living alone according to levels of ADL, IADL and cognition.
안수연,김희경,공은숙,김남초,김춘길,송미순,이영휘,장성옥,조명옥,최경숙 한국노인간호학회 2014 노인간호학회지 Vol.16 No.2
Purpose: This study was designed to provide qualitative data to explore the nurses' experience of caring for elderswho are dying. Methods: Data were collected from ten nurses who had experiences in nursing elders who were dying and receiving care in long term care facilities in Korea. Analysis of data was done by conventional contentanalysis. Results: In this study, 8 essential themes were extracted; 'beginning of dying with uncertainty', 'approaching death in daily life', 'effort for medical intervention', 'arranging the last meeting with significant others', 'becomingelder's family member inside who shared elder's life', 'rumination about the situation of elders' dying and accumulated experience, 'empirical understanding and coping with human death', 'results depends on nurses‘role'Conclusion: The results of the study suggest that nursing care manuals and prediction tools regarding end-of-lifecare for elders need to be developed and preparation of advance directives for elders in the long-term care settings should be required.
안수연,채금주,구진모 대한영상의학회 2018 Korean Journal of Radiology Vol.19 No.3
Objective: To compare the observer preference of image quality and radiation dose between non-grid, grid-like, and grid images. Materials and Methods: Each of the 38 patients underwent bedside chest radiography with and without a grid. A grid-like image was generated from a non-grid image using SimGrid software (Samsung Electronics Co. Ltd.) employing deep-learningbased scatter correction technology. Two readers recorded the preference for 10 anatomic landmarks and the overall appearance on a five-point scale for a pair of non-grid and grid-like images, and a pair of grid-like and grid images, respectively, which were randomly presented. The dose area product (DAP) was also recorded. Wilcoxon’s rank sum test was used to assess the significance of preference. Results: Both readers preferred grid-like images to non-grid images significantly (p < 0.001); with a significant difference in terms of the preference for grid images to grid-like images (p = 0.317, 0.034, respectively). In terms of anatomic landmarks, both readers preferred grid-like images to non-grid images (p < 0.05). No significant differences existed between grid-like and grid images except for the preference for grid images in proximal airways by two readers, and in retrocardiac lung and thoracic spine by one reader. The median DAP were 1.48 (range, 1.37−2.17) dGy*cm2 in grid images and 1.22 (range, 1.11−1.78) dGy*cm2 in grid-like images with a significant difference (p < 0.001). Conclusion: The SimGrid software significantly improved the image quality of non-grid images to a level comparable to that of grid images with a relatively lower level of radiation exposure.
미래의 오피스 가구 개발에 따른 인체공학 데이터의 효율적 적용에 관한 연구
안수연(Ahn Sooyun) 한국가구학회 2001 한국가구학회지 Vol.12 No.2
The purpose of human factor study is to help the people in good conditions, and to increase the efficiency of physical productivity and mental creativity. Also for the furniture design field, the applications of human scale dimensions are considered as the very important<br/> aspects. For the design of the office systems furniture, designer must consider the<br/> onveniences of variable users as much as possible.<br/> To design the office systems for the various work environment, it is necessary to analyze the human scale dimensions according to the furniture items and the user behaviors. In these days, many countries are interested about the workplace ergonomic regulations to reduce a class of injuries called 'Musculoskeletal Disorders(MSDs)' by controlling risk factors. In this study, I intend to research and to analyze the features of human scale dimensions and the user behaviors of office environment, and propose some office furniture design tips.<br/>
안수연,박서아,Pradeep Kumar,최권영 한국생물공학회 2023 Biotechnology and Bioprocess Engineering Vol.28 No.2
This study reports the identification of a novel bio-indigo-producing bacterium from soil sources. Bluecolored colonies were first screened and isolated from a screening plate containing M9 minimal medium and 1.0mM indole. The blue colony was selected among various colonies and identified as an Acinetobacter species. The purified blue dye exhibited a distinct spectral feature of λmax at 490 nm. The structure of the dye was then analyzed. Thinlayer chromatography separation and liquid chromatography/ mass spectrometry analysis confirmed that the blue dye was indigo (with Rf and m/z values of 0.8 and 263.4, respectively). Wild-type Acinetobacter sp. could produce bio-indigo up to 1.018 ± 0.013 mg/L in an M9 minimal medium supplemented with 1.0 mM indole. Next, the genes involved in the production of indigo were investigated using sequence analysis and by comparing them with those in related Acinetobacter species. The indole-3-acetate monooxygenase-encoding gene iacA was found to be responsible for indigo synthesis from indole. The iacA gene was then amplified and expressed in Escherichia coli BL21(DE3), and the recombinant E. coli strain could produce bio-indigo at levels up to 0.291 ± 0.027 g/L over 24 h. Indigo production was highly dependent on indole substrate feeding. These findings may facilitate the industrial bioprocess of bio-indigo production.