• Title, Summary, Keyword: Aging

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Aging and Skin Aging (노화와 피부노화에 대한 고찰)

  • Nam Hae-jeong;Kim Yoon-bum
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.17 no.1
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    • pp.16-33
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    • 2004
  • In Oriental medicine, aging is just a natural process like change of seasons. Ancient Oriental people accepted it as a natural thing to be growing older and to die at last. The science of aging has advanced dramatically. In the last 2 decades, advances in genetics and molecular biology have led to extraordinary new understandings in how cells age, how apoptosis programs cells to die, and how neuroendocrinology plays a role in the lifespan of organisms. Today, the matter of primary concern about aging is a cellular and mitochondrial damage of human body induced by reactive oxygen species(ROS). The skin aging can be divided into two areas, intrinsic(chronologic)-aging and photo-aging. There are lots of photo damage about skin aging. The skin is increasingly exposed to ultraviolet(UV) irradiation in life. Therefore, the risk of photo-oxidative damage of the skin induced by reactive oxygen species(ROS) has increased substantially. Nowadays, many people believe that they can stop or at least delay the process of aging. There are lots of treatments that promise to slow the process of aging and the associated ailments. Many of these treatments, for example, exercise, Vit E, Vit C therapy, hormone therapy, restrict diet, are gradually being subjected to clinical trials. But in spite of all efforts, researches and investigations, there is no single method or treatment which is revealed to be truly effective for delaying progress of aging. Every methods insisted on effect for delaying aging process, has its dark side. All we can do is just keeping ourself healthy until the time of death.

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The Influence of Anxiety over Aging of the Elderly Group on Successful Aging and the Mediation Effect of Social Support (노인의 노화불안이 성공적 노화에 미치는 영향과 사회적 지지의 매개효과)

  • Kim, Jeong-Hui;Park, Ji-Young
    • The Journal of the Korea Contents Association
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    • v.15 no.9
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    • pp.210-222
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    • 2015
  • The purpose of this study is to verify the mediation effect of social support in the influence of anxiety over aging of the elderly group on successful aging. The results of analyses are as follows: First, as anxiety over aging of the elderly group increased, the successful aging decreased. Second, in the relationship between anxiety over aging of the elderly group and social support, the social support decreased as anxiety over aging increased. Third, in the relationship between social support and successful aging, an increase of social support led to an increase in successful aging. Fourth, Old man in relationship to and successful aging of ageing in the social support mediated effect parts of their identified. Thus, this study suggests measures to decrease the anxiety over aging of the elderly group for the successful aging and proposals for the further studies in an aging society.

Non-Coding RNAs in Caenorhabditis elegans Aging

  • Kim, Sieun S.;Lee, Seung-Jae V.
    • Molecules and Cells
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    • v.42 no.5
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    • pp.379-385
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    • 2019
  • Non-coding RNAs (ncRNAs) comprise various RNA species, including small ncRNAs and long ncRNAs (lncRNAs). ncRNAs regulate various cellular processes, including transcription and translation of target messenger RNAs. Recent studies also indicate that ncRNAs affect organismal aging and conversely aging influences ncRNA levels. In this review, we discuss our current understanding of the roles of ncRNAs in aging and longevity, focusing on recent advances using the roundworm Caenorhabditis elegans. Expression of various ncRNAs, including microRNA (miRNA), tRNA-derived small RNA (tsRNA), ribosomal RNA (rRNA), PIWI-interacting RNA (piRNA), circular RNA (circRNA), and lncRNA, is altered during aging in C. elegans. Genetic modulation of specific ncRNAs affects longevity and aging rates by modulating established aging-regulating protein factors. Because many aging-regulating mechanisms in C. elegans are evolutionarily conserved, these studies will provide key information regarding how ncRNAs modulate aging and lifespan in complex organisms, including mammals.

Analyses on Electrical-Mechanical Characteristics of Environment-friendly Transformer Insulating Material by Accelerated Thermal Aging (가속 열 열화에 따른 환경친화형 변압기 절연물의 전기적-기계적 특성 분석)

  • Shim, Myeong-Seop;An, Jung-Sik;Choi, Sun-Ho;Jeong, Jung-Il;Lee, Tae-Ho;Huh, Chang-Su
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.59 no.10
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    • pp.1832-1838
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    • 2010
  • Aging of transformer insulating material in natural ester insulating oil is compared to that in conventional transformer oil. Aging of insulating paper and insulating oil have been studied by performing accelerated thermal aging test. Sealed aging test vessels containing cooper, laminated core, Kraft paper and insulating oil(natural oil or mineral oil) were aged at $140^{\circ}C$ for 500, 1000, 1500 and 2000 hours. Insulating oils after aging are investigated with total acid number, breakdown voltage and viscosity. Also, degradation of insulating paper after aging is determined using breakdown voltage and mechanical strength. Accelerated aging studies demonstrate a slower aging rate for natural ester insulating oil compared to the rate for conventional mineral oil.

A Study on the Dynamics of the Local Government Finance in Accordance with the Aging Population (고령화에 따른 지방재정의 동태성 분석)

  • Choi, Nam-Hee
    • Korean System Dynamics Review
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    • v.13 no.4
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    • pp.5-31
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    • 2012
  • This paper aims at investigating the dynamics between aging population and local finance. In recent years, the aging rate has been accelerating the pace. The trend implies that Korea is moving towards the aging society, presumably, with unprecedented speed in the world. Aging society's biggest problems are centered around the explosive growth of the financial needs. In particular, these problems are apt to appear more seriously in local governments, as most of them are confronted with high level of aging population and poor financial bases. Firstly, it analyzes how the population structure in the local government impacts local finance, income and expenditure. Based upon in-depth literature reviews, this study examines variables related to aging population and local fiance. Secondly, it focuses on a series of positive and negative feedback loops which would reveal the essence of the mutual interaction structure between aging population and local governments' fiscal behaviors.

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Analysis on Spatial Pattern Changes of Aging Phenomenon and Relation between Aging Population and Regional Characteristics (고령화 현상의 공간적 패턴 변화와 지역특성과의 관계 분석)

  • Lee, Jimin
    • Journal of Korean Society of Rural Planning
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    • v.22 no.4
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    • pp.139-146
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    • 2016
  • Aging phenomenon is an important issue in Korea national policy. This aging phenomenon depends on the social and environmental characteristics of regions. Also aging phenomenon and regional characteristics have spatial dependency. The purpose of this study is to discover the spatial changes in aging population rate and to find local factors of regional aging phenomenon considering spatial autocorrelation. For spatial analysis of ageing phenomenon, local Moran's I and Geographically Weighted Regression (GWR) were applied. As the results, the most significant changes of aging phenomenon appeared between 2000 and 2005, and most of hot-spot regions (aged regions) were distributed in Jullanam-do and Jullabuk-do. The results of GWR (R-square: 0.681) shows that total fertility rate, the number of doctor per 1,000 people and forest area rate have positive relation with aging population rate, but the number of private academy per 1,000 people has negative relation.

The Effects of Emotional Happiness on Aging Preparation

  • Jung, Hae-ok;Kim, Jung-ae
    • International Journal of Advanced Culture Technology
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    • v.6 no.3
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    • pp.59-68
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    • 2018
  • This study was a cross-sectional descriptive study of the effects of emotional happiness on aging preparation for 45-60 year olds. Participants of this study were 312 volunteers and data was collected online, the collection period was from May 15, 2018 to May 31, 2018. The tools used in the research were the emotional happiness developed by Watson et al (1988) et al., the aging preparation developed by JH Lee (2009). Analysis was done using t-test, ANOVA, Pearson correlation, and regression by SPSS 18.0. As a result of the analysis, 84.0% of participants felt physically healthy and 89.8% felt mental health. The spouses of participants were physically 83.4% healthy and mentally 82.7% healthy. The correlation between emotional happiness, health cognition and aging preparation showed that physical health had a correlation with mental health (r = .482, p <0.01) and emotional happiness (r = .369, p <0.01), economic aging preparation (r = .411, p <0.01), social aging preparation (r = .119, p <0.01). Mental health was correlated with emotional happiness (r = .491, p <0.01), economic aging preparation (r = .411, p <0.01) and social aging preparation. Difference between emotional happiness and retirement preparation according to presence or absence of disease, emotional happiness (t = -4.503, p <0.01) and economic aging preparation (t = -4.960, p <0.01) were statistically significant. Emotional happiness affects the preparation of old age, emotional happiness affects to physical aging preparation under statistical significance (F=25.191, p<0.01), economic aging preparation (F=1131.783, p<0.01), and social aging preparation (F=147.672, p<0.01) which were sub components of aging preparation. Emotional happiness showed a 7.5% effect on the preparation of physical aging, 78.4% on economic aging preparation and 32.3% on social aging preparation. Based on the above results, it can be concluded that physical health and mental health are related to emotional happiness, economic aging preparation, and social aging preparation. And also these results can be inferred that the illness causes emotional less feeling of happiness and economic difficulty. Based on the results of this study, emotional well - being influences the retirement preparation significantly at statistical significance. Therefore, if the concept of emotional happiness is introduced to the old-age preparation program, it will be more client centered program.

Particle-size-dependent aging time scale of atmospheric black carbon (입자 크기의 함수로 나타낸 대기 중 블랙카본의 변성시간척도)

  • Park, Sung Hoon
    • Particle and aerosol research
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    • v.5 no.2
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    • pp.45-52
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    • 2009
  • Black carbon, which is a by-product of combustion of fossil fuel and biomass burning, is the component that imposes the largest uncertainty on quantifying aerosol climate effect. The direct, indirect and semi-direct climate effects of black carbon depend on its state of the mixing with other water-soluble aerosol components. The process that transforms hydrophobic externally mixed black carbon particles into hygroscopic internally mixed ones is called "aging". In most climate models, simple parameterizations for the aging time scale are used instead of solving detailed dynamics equations on the aging process due to the computation cost. In this study, a new parameterization for the black carbon aging time scale due to condensation and coagulation is presented as a function of the concentration of hygroscopic atmospheric components and the black carbon particle size. It is shown that the black carbon aging time scale due to condensation of sulfuric acid vapors varies to a large extent depending on the sulfuric acid concentration and the black carbon particle size. This result indicates that the constant aging time scale values suggested in the literature cannot be directly applied to a global scale modeling. The aging time scale due to coagulation with internally mixed aerosol particles shows an even stronger dependency on particle size, which implies that the use of a particle-size-independent aging time scale may lead to a large error when the aging is dominated by coagulation.

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A Framework of Robot Interface Design with Aging Metaphor (노화 메타포를 적용한 로봇 인터페이스 디자인 프레임워크)

  • An, Hye Young;Pan, Young Hwan
    • Journal of the Ergonomics Society of Korea
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    • v.37 no.1
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    • pp.15-27
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    • 2018
  • Objective: This study aims to apply the concept of aging metaphor to personal service robots to deliver new experiences to users. Background: Personal service robots such as Softbank's Pepper and MIT Media Lab's Jibo have begun entering our lives. These service robots have the important function of interacting with human beings. Method: The robot aging metaphor is to transform the shape, color, motion, voice, and texture, which are visual, auditory, and tactile components, by applying the concept of aging to the robot interface. The robot applied with the concept of aging metaphor forms a close relationship with human beings and provides emotional value to them. We summarize herein the concept of robot aging metaphor and propose an application method using the system and feature of the natural aging process in the real world through the prototype. Results: Robot aging metaphor structure and applied researches of robot aging metaphor are suggested in designing robot interfaces. Conclusion: The results of the design framework of robot aging metaphor will help users to experience emotional value interacting with robots. The framework which is suggested should be applied to social robots in appropriate contexts. Application: Types of aging process which provides optimizing user experience for users should be validated through an experiment.

Application of an Electric Field Refrigeration System on Pork Loin during Dry Aging

  • Park, Sin-Young;Kim, Hack-Youn;Choe, Juhui
    • Food Science of Animal Resources
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    • v.39 no.4
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    • pp.668-676
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    • 2019
  • This study aimed to investigate the effect of an electric field refrigeration (EFR) on the quality characteristics of pork loin including dry aging loss, pH, water holding capacity (WHC), cooking loss, color, shear force, thiobarbituric acid reactive substances (TBARS), and microbial growth during dry aging (0, 1, 2, 3, 4, 7, and 9 wk) in comparison with a commercial refrigerator (CR). Total plate counts (TPC) of the CR group approached 8.07 Log CFU/g at 2 wk of dry aging, thus indicating meat spoilage. Cooking loss, lightness, and shear force of EFR were significantly decreased (p<0.05) at subsequent aging weeks in both the EFR and CR. Aging loss, TPC, TBARS levels increased at subsequent aging weeks; however, pH values were not influenced by aging. At the same aging weeks (1 or 2 wk), the EFR group displayed significantly lower values (p<0.05) of aging loss, pH, TPC, and TBARS levels than the CR group. No significant differences in WHC, cooking loss, and shear force was observed until 2 wk of aging between the EFR and CR groups. The present results show that application of the EFR system improves the tenderness, color, and lipid oxidation stability of pork loin and extends its shelf life in comparison with a commercial refrigeration.