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The Relation between Fertilization Practices and Functional Metabolites of Crops: A Review
임정은,조민지,윤혜진,하상건,이덕배,성좌경 한국토양비료학회 2016 한국토양비료학회지 Vol.49 No.2
Various researches on the effects of fertilization levels on functional metabolites in crop have been conducted. This review summarizes the previous studies on the relation between fertilization supply and accumulation of metabolites (phenolics, carotenoids, ascorbic acid and glucosinolates) which function as antioxidants in crop. The accumulation of phenolic compounds is related to the activation of phenylalanine ammonia lyase (PAL) in phenylpropanoid pathway. Most of the previous studies discuss that low nitrogen (N) supply activates PAL, thereby increasing the synthesis of phenolics. Similarly, high N supply leads to a decrease in ascorbic acid because of the shading effect derived from the accelerated vegetative growth under high N level. Unlike the phenolics and ascorbic acid, carotenoids are accumulated with increasing N supply. In this regard, the previous studies explain that N is a main element closely associated with formation of key enzyme for the synthesis of carotenoids. Glucosinolates are generally increased under decreasing N supply and increasing S supply. Although the previous studies show similar trends about the accumulation of metabolites by nutrient level, they also suggest that many other factors including crop types, cultivars, cultural environment (water, temperature, light, etc.) influence the accumulation of functional metabolites in crop.
도시철도 개통이 통근·통학인구 변화에 미치는 영향 분석
임정은,조성훈 한국교통연구원 2019 交通硏究 Vol.26 No.3
How do Metro Rail expansions in metropolitan areas affect commuting flows over time? We build a panel dataset from the Korea Census, incorporating all commuting zones in Busan, to conduct an empirical study of the commuting effect of Metro Rail expansions. Using the quasi difference-in- difference time variation of Metro Rail expansions, we find the connection between regions with 9% increases in commuting flows, as compared to equivalent tracts that are not connected. The impact of ridership improvement from Metro Rail stations at origin or destination also leads to a 10-12% increase in commuting flows. 도시철도의 연결 및 개통이 대도시 지역에서 통근·통학인구 흐름에 미치는 영향은 어떠한가? 본 연구에서는 부산광역시의 16개 지역구 및 인접 통행권을 포괄한 지역패널 자료를 구축하여 2000년 이후 부산광역시 도시철도의 확장이 통근·통학인구 흐름을 어떻게 변화시켰는지 분석한다. 준자연실험(quasi-natural experiment)적인 도시철도 건설의 속성을 이용한 실증 분석 결과, 부산광역시의 도시철도로 인한 두 지역의 연결은 그렇지 않은 지역에 비해 통근·통학인구의 흐름이 9% 증가하였다. 지역 내 도시철도역의 개통 또한 개통되지 않은 지역에 비해 통근·통학인구의 흐름이 10~12% 높았다.
농촌 중년여성의 자기효능감과 사회적지지가 갱년기대처에 미치는 영향
임정은,강홍비,김소희,나누리,민수빈,오승희,이예원,정유선,조원진,최서윤,신주현,이민경 이화여자대학교 간호과학대학 2017 이화간호학회지 Vol.- No.51
Purpose: The purpose of this study was to identify the effects of self-efficacy, and social support on climacteric coping, of middle-aged women in rural area. Method: The study subjects included 172 women aged 40-65 years based on eup, myoen, and ri areas of Incheon, Ulsan, Gyeonggi-do, and Gyeongsangbuk-do. The instruments used in this survey were the &self-efficacy scale& (SES) developed by Sherer, M., Maddux et al(1982), which was translated by Hong(1995), &the social support scale& developed by Park(1985), and &the adaptation of the symptoms of menopausal& developed by Bae(1999) and modified by Choi(2008). The data were collected by the face to face interview with a questionnaire from December 9th to 31st 2016. Data was statistically analyzed using t-test, one-way ANOVA, Pearson correlation coefficient and linear regression. Results: There were statistically no significant difference in climacteric coping and self-efficacy. The climacteric coping were significantly associated with informational social support. Also there were statistically significant difference in self-efficacy and social support. Conclusion: These finding suggest the need to develop nursing intervention to improve climacteric coping of middle-aged women in rural area. To improve the climacteric coping of middle-aged women in rural area, factors such as status of education and living with or without husband should be considered.
서미스터로의 응용을 위한 La0.7Sr0.3MnO3 박막의 구조적, 전기적 특성
임정은,박병준,이삼행,이명규,박주석,김병철,김영곤,이성갑 한국전기전자재료학회 2022 전기전자재료학회논문지 Vol.35 No.5
La0.7Sr0.3MnO3 precursor solution were prepared by a sol-gel method. La0.7Sr0.3MnO3 thin films were fabricated by a spin-coating method on a Pt/Ti/SiO2/Si substrate. Structural and electrical properties with the variation of sintering temperature were measured. All specimens exhibited a polycrystalline orthorhombic crystal structure, and the average thickness of the specimens coated 6 times decreased from about 427 nm to 383 nm as the sintering temperature increased from 740℃ to 830℃. Electrical resistance decreased as the sintering temperature increased. In the La0.7Sr0.3MnO3 thin films sintered at 830℃, electrical resistivity, TCR, B-value, and activation energy were 0.0374 mΩ‧cm, 0.316%/℃, 296 K and 0.023 eV, respectively.
임정은,안명찬,최욱희,김인구,이정은,김희중,신수정,김선홍,정연정 강원대학교 농업생명과학연구원 2023 강원 농업생명환경연구 Vol.35 No.2
This study evaluated the heavy metal(loid)s (HMs) pollution level in soils from 75 urban parks located in Gangwon province by calculating indices of soil pollution, including single pollution index (PI), geoaccumulation index (Igeo), nemerow pollution index (PIne), and potential ecological risk (RI). The average concentration of each HM was 0.0–112.1% of the natural background concentration and 0.0–20.3% of the warning criteria of soil contamination. The overall HMs pollution level was considered very low, but Zn and Cu were relatively higher than others. Relatively high pollution levels of Zn and Cu may be associated with urban pollutants such as vehicles. Although the concentration of HMs is lower than the legal standard, the possibility of HMs accumulation in the soil by unknown sources still exists. Therefore, management, such as regular monitoring of heavy metal(loid)s in urban park soils, is needed to secure the health of living organisms, including humans.