• 한국의류산업학회지
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• 제21권5호
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• pp.586-596
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• 2019

Ageism, attitudes toward aging, and body satisfaction play significant roles in determining older women's perceptions of successful aging. In addition, subjective socioeconomic and health status can act as major identifiers in determining the overall level of physical and social well-being in old age. Research for this exploratory study includes: 1) exploring the overall levels of ageism perception, attitudes toward aging, and body satisfaction among older women and 2) identifying the differences in ageism, attitudes toward aging, and body satisfaction between high and low subjective socioeconomic and health status of older women. Data for this study were collected through an online questionnaire of 221 older women. The results revealed that older women's perceptions of ageism, aging attitudes, and body satisfaction were significantly different based on subjective socioeconomic and health status. In general, older women with higher levels of subjective socioeconomic and health status reported more positive perceptions and attitudes toward aging along with higher levels of body satisfaction. The results implied that subjective health status was a more powerful indicator differentiating the aging-related perceptions of older women than the subjective socioeconomic status. This study supports the need for a conscious effort to reduce ageism that ultimately improves the overall well-being of all members in society.

• 한국콘텐츠학회논문지
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• 제20권7호
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• pp.491-502
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• 2020

본 연구는 중년의 노화불안이 심리적 안녕감에 영향을 미치는 과정에서 인지적 유연성과 주관적 경제수준의 조절된 매개효과를 확인하고자 하였다. 이를 위해 40세~64세의 성인 317(남159명, 여158명)명을 대상으로 온라인설문지를 실시하였으며, 설문기간은 2017년 9월 3일부터 9월 28일까지였다. SPSS 21.0 및 SPSS Macro를 사용하여 상관분석, 회귀분석, 유의성 검정을 하였다. 연구 결과, 첫째, 상관 분석 결과 노화불안, 인지적 유연성, 주관적 경제수준, 심리적 안녕감 간의 유의한 상관이 나타났다. 둘째, 중년의 노화불안과 심리적 안녕감의 관계에서 인지적 유연성이 유의한 부분매개효과(β = .530, p < .001)를 보이는 것으로 나타났다. 셋째, 인지적 유연성과 심리적 안녕감의 관계에서 주관적 경제수준의 조절효과(β = .080, 𝜟R² =.006, p <.05)가 유의한 것으로 나타났다. 넷째, SPSS Macro를 통한 검증 결과, 노화불안과 심리적 안녕감의 관계에서 인지적 유연성과 주관적 경제수준의 조절된 매개효과가 검증되었다. 마지막으로 본 연구의 의의와 제한점, 후속연구에 대한 제언을 논의하였다.

• 한국자동차공학회논문집
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• 제5권3호
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• pp.86-94
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• 1997

Quick aging of catalysts has done with IAE(Institute for advanced engineering) AGING MODE suggested by IAE. To estimate the effects of number of aging cycle, temperature and $H_2O$, characteristics of surfaces, mechanical properties and weibull modulus were estimated. Also, the conversion efficiency of aged catalysts was evaluated with model gas bench test. The area of surface and pore volume were decreased according to the number of aging cycle. The precious metal which is well dispersed in fresh state was sintered and agglomerated with aging. The mechanical of deactivation and sintering of catalysts are discussed on the basis of mechanical tests. The conversion efficiency was decreased with the repeats of aging. Especially, the existence of $H_2O$ in supply gas had a main role in catalyst deactivation withy high temperature.

• The Korean Journal of Physiology and Pharmacology
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• 제25권2호
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• pp.131-137
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• 2021

Aging is the process spontaneously occurred in living organisms. Cardiac fibrosis is a pathophysiological process of cardiac aging. Mangiferin is a well-known C-glucoside xanthone in mango leaves with lots of beneficial properties. In this study, rat model of cardiac fibrosis was induced by injected with 150 mg/kg/d D-galactose for 8 weeks. The age-related cardiac decline was estimated by detecting the relative weight of heart, the serum levels of cardiac injury indicators and the expression of hypertrophic biomakers. Cardiac oxidative stress and local inflammation were measured by detecting the levels of malondialdehyde, enzymatic antioxidant status and proinflammatory cytokines. Cardiac fibrosis was evaluated by observing collagen deposition via masson and sirius red staining, as well as by examining the expression of extracellular matrix proteins via Western blot analysis. The cardiac activity of profibrotic TGF-β1/p38/MK2 signaling pathway was assessed by measuring the expression of TGF-β1 and the phosphorylation levels of p38 and MK2. It was observed that mangiferin ameliorated D-galactose-induced cardiac aging, attenuated cardiac oxidative stress, inflammation and fibrosis, as well as inhibited the activation of TGF-β1/p38/MK2 signaling pathway. These results showed that mangiferin could ameliorate cardiac fibrosis in D-galactose-induced aging rats possibly via inhibiting TGF-β/p38/MK2 signaling pathway.

• 디지털융복합연구
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• 제20권2호
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• pp.299-309
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• 2022

유튜브 동영상은 해당 분야의 최신 트렌드를 확보하고 있으며 시청자의 선호도와 비선호도를 제공한다. 본 연구는 최근 죽음 관련 유튜브 동영상을 조사하고 삶, 웰다잉, 웰에이징 등과의 관련성을 탐색하여 한국인의 건강한 삶 구축에 기여하는 것을 목적한다. 조사 기간 및 대상은 2019년~2021년에 업로드 된 동영상 13편이다. 조사 결과 의사를 포함한 25인의 화자를 확보하였다. 동영상 화자들은 전문가의 입장에서 죽음 논의를 다채롭게 전개하였는데 핵심 사항으로는 삶의 진정한 가치, 두려워할 필요 없는 죽음, 희망의 소중함, 죽음의 자연스러움 등이 있었다. 삶, 죽음, 웰에이징, 웰다잉 등 4가지 기준에 의거하여 11개의 전문가 관점을 4가지 유형으로 재구성하였다. 특정 시기에 추출한 13편을 연구하였다는 제한에도 불구하고 본 연구는 유튜브 동영상이 자유로운 소통의 장(場)임을 밝혔다. 그것은 향후 우리 삶의 건강 유지와 향상, 융복합 연구 응용 등에 일정 부분 기여할 수 있다.

• Journal of Animal Science and Technology
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• 제63권4호
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• pp.766-777
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• 2021

Bezafibrate, a fibrate drug used as a lipid-lowering agent to treat hyperlipidemia, is a pan-agonist of peroxisome proliferator-activated receptor alpha. It can enhance mitochondrial fatty acid oxidation, oxidative phosphorylation, and mitochondrial biogenesis. After ovulation, oocytes may get arrested at the metaphase II (MII) stage until fertilization beyond optimal timing, which is termed as post-ovulatory aging. Post-ovulatory aging is a disease that degrades DNA, mitochondria, and oxidative system, and has a negative impact on embryo development and quality; however, the impact of bezafibrate during post-ovulatory aging has not been fully defined. In the present study, we assessed the ability of bezafibrate to prevent the progression of aging in in vitro conditions as well as the underlying mechanisms in pigs. An appropriate concentration of this drug (50 µM) was added, and then oxidative stress, reactive oxygen species downstream, mitochondrial biogenesis, and mitochondrial function were analyzed via immunofluorescence staining and real-time polymerase chain reaction. Bezafibrate significantly alleviated reactive oxygen species and ameliorated glutathione production simultaneously in oocytes and embryos. Moreover, it diminished H2A.X and attenuated CASPASE 3 expression produced by oxidative stress in oocytes and embryos. Furthermore, bezafibrate remarkably improved the mitochondrial function and blastocyst quality as well as markedly reduced the mitochondria/TOM20 ratio and mtDNA copy number. The elevated PARKIN level indicated that mitophagy was induced by bezafibrate treatment after post-ovulatory aging. Collectively, these results suggest that bezafibrate beneficially affects against porcine post-ovulatory oocyte aging in porcine by its antioxidant property and mitochondrial protection.

• 가정과삶의질연구
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• 제25권2호
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• pp.137-153
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• 2007

The purpose of this study was to explore the similarities and differences of elements of successful aging in Western and Korean society using a background of time and dominant values of each society. Content analysis of concepts and components of 'successful aging' was performed based on 12 Korean articles and 23 Western articles. The major findings were: (1) The studies of successful aging accomplished since 2001 and the studies that explore the elements of successful aging perceived by the elderly mentioned diverse elements as essential to successful aging. (2) There were both common and distinct components of successful aging in Western and Korean society. Some of the essential components for successful aging were commonly accepted, but others were varied and unique, reflecting the period of experience and cultural values. These results could be used to better understand unique successful aging of the Korean elderly, as well as to establish a basis of intervention that meets the specific demands of this population.

• 한국의류학회지
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• 제42권4호
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• pp.657-670
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• 2018

This study investigated the wearing of jackets by down-aging middle-aged women in their 40s to 50s who enjoy wearing attire from ladies' apparel brands that target the 20s to 30s age group. As a method of research, a survey was done on middle-aged women in their 40s and 50s as the target age group. Based on the survey results, comparison and analysis was done on the wearing of jackets as well as preferred extra space and fitness of the clothes, with the distinction between the down-aging group and the non down-aging group. The down-aging middle-aged women purchased jackets mainly at department stores, outlets, discount outlets, and internet shopping malls, and showed the highest frequency of wearing the jackets once or twice a week. For the item "importance in selecting a jacket", both groups chose "the design" as the most important aspect; however, the non down-aging group took "size and fitness" and "activity and comfort" more than the down-aging group. Especially regarding the size of the jackets, size S (55) was the most often worn by the down-aging group, whereas size M (66) was the most often worn by the non down-aging group.

• 동아시아식생활학회지
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• 제21권4호
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• pp.545-552
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• 2011

Fernbraken is a popular and well-known wild grass, but the physiochemical properties of Korean Traditional pickling (Jangachi) during aging have been little reported. Therefore, this study was carried out to investigate the physiochemical properties of Fernbraken Jangachi treated with a soybean sauce mixture for 6 weeks (1st pretreatment) as well as fermented with soybean paste, red hot pepper paste and soybean sauce for 7 weeks. Total polyphenol contents, acidity, salinity, sweetness (Brix), and ${\alpha}$-tocopherol of Fernbraken Jangachi all increased with aging period. On the other hand, pH and total acidity of Fernbraken Jangachi did not change much. Among the three kinds of Jangachies, Jangachi fermented with soybean sauce showed 2 fold higher salinity and total acidity levels compared to the others. Therefore, the physiochemical properties of Fernbraken Jangachi were dependent on the pickling properties, such as soybean paste, hot pepper paste or soybean sauce, and these properties maintained a certain level after 5~6 weeks of aging. Further, proper aging period for Fernbraken Jangachi was suggested as 10 weeks.

• Elastomers and Composites
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• 제37권1호
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• pp.49-56
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• 2002

UV 조사시간과 오존유량을 변화시키면서 폴리프로필렌을 UV/오존 산화하였으며 이의 표면특성을 접촉각과 XPS를 이용하여 살펴보았다. 산화된 표면의 노화거동을 공기, 물, 에틸렌 글리콜 하에서 살펴보았으며, 또한 lap shear 실험을 통하여 접착력을 관찰하였다. 극성표면 에너지와 접착력은 UV/오존 처리시간과 오존유량이 증가함에 따라 증가함을 알 수 있었다. 물에서 노화실험을 한 경우 극성표면 에너지의 변화가 없었으나, 공기 하에서 실시한 경우 2-3일 이내에 급격히 감소하여 처리하지 않은 폴리프로필렌의 값에 근접하였다.