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Hunkyung Kim,Hirouki Sasai 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10
Frailty and sarcopenia among older adults have been an area of great interest in current geriatric and gerontological research. Previous studies have shown that frailty and sarcopenia are closely associated with adverse health outcomes such as functional disability, injurious falls, hospitalization, long-term care needs, morbidity, and mortality. How frailty and sarcopenia develop are still a matter of intense debate, however there have been several factors noted, such as sociodemographic factors, physical and biological factors, lifestyle and psychological factors, and chronic diseases. Currently, there are no approved medications for treating frailty and sarcopenia. A systematic review and meta-analysis summarized the effectiveness of the interventions on the management of frailty and sarcopenia. There are four treatment strategies including exercise-based intervention, nutrition-based intervention, combined exercise and nutrition intervention, and drug therapy. Among them, this time we will focus on nutritional supplementation. The nutritional intervention included supplement intake and daily dietary management. Although numerous nutrients have been tested, such as proteins, vitamin D, omega-3 fatty acids, eicosapentaenoic acid, docosahexaenoic acid, L-carnitine, and others, their effectiveness to date seems very limited and the findings from these studies have not always been consistent. In clinical practice guideline for frailty published in 2020 indicated that single nutritional interventions, such as nutritional education and nutritional supplementation, can be weakly recommended for frailty, and recommend physical exercise therapy in combination with nutritional supplementation for frailty. Many prior studies reported the effects of exercises combined with nutritional supplementations for frailty and sarcopenia. Among them, protein supplementation combined with resistance training was most commonly used in previous studies. However, the ideal nutrient components and supplement amount for frailty and sarcopenia are not yet known. Further large-scale and long-term interventions are required to confirm the most effective nutritional ingredients for the management of frailty and sarcopenia.
上水道 콘크리트 構造物 最適 維持管理를 위한 內部 防水/防蝕材의 附着强度 性能等級 設定에 관한 實驗的 硏究
곽규성(Kwak Kyu-Sung),서현재(Seo Hyun-Jae),미야우치 히로유키(Miyaushi Hirouki),김규용(Kim Kyu-Young),오상근(Oh Sang-Keun) 대한건축학회 2011 大韓建築學會論文集 : 構造系 Vol.27 No.7
It has been very difficult to choose suitable engineering method for concrete tank of water distribution because the guidelines of design standard, construction and quality control are unclear until yet. So, the evaluation method with required performance and election criteria for waterproof and anti-corrosion is necessary. In this study, 12 types of waterproof and anti-corrosion methods are evaluated with bond strength in the conditions of wet/dry, chemical agents deposition, ozone exposure treatment, and freezing and thawing. Based on the test results, performance rating method of bond strength with pre-conditions is developed with standard normal distribution and probability density function by applying 2σ. Also, evaluation matrix mechanism can be established for optimal performance requirements and reliable waterproof and anti-corrosion methods.