http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Variations of Saponin Composition and Content in Korean Soybean Cultivars
KyeongHo Park,Xiangmin Piao,Jaehong Lee,Eunkyu Jang,SunLim Kim,Gyuhwa Chung,Chigen Tsukamoto,Hongsig Kim 한국작물학회 2010 한국작물학회 학술발표대회 논문집 Vol.2010 No.04
Various saponins are present in soybean seed, and they can be divided into three groups, group A, B and E saponin, in which the aglycone are soyasapogenol A, B and E, respectively. Group A saponins are supposed to be responsible for the undesirable bitter and astringent taste, and Group B saponins including 2,3-dihydro-2,5-dihydroxy-6-methyl- 4H-pyran-4-one (DDMP)-conjugated soyasaponins have the health-contributing activities. This study was conducted to investigate the saponin composition and content of 69 Korean cultivars. Thin-layer chromatography (TLC) and High-performance liquid chromatography (HPLC) were used to analyze the composition and content of soyasaponins. The composition of saponins in the seed hypocotyl of 69 Korean cultivars were divided into three groups, Aa, Ab and AaAb types. The numbers of Aa, Ab and AaAb types were 10, 36 and 23, respectively. The contents of group A saponin (Aa, Ab and Ac), group B saponin (non-DDMP, Ba and Bb) and DDMP saponin (αg and βg) ranged 21.7 ~ 57.0mg/g, 1.4 ~ 5.1mg/g and 9.8 ~ 27.4mg/g, respectively. A total of saponin content of seed hypocotyl in 69 Korean cultivars ranged from 43.8mg/g to 85.3mg/g with an average of 59.1mg/g.
Jiman Kim,Kihong Sim,Kyeongho Jang,Sanghyun Je,Pyeongyeol Park,Sangjun Oh,Keeman Kim IEEE 2008 IEEE transactions on applied superconductivity Vol.18 No.2
<P>Nb<SUB>3</SUB>Sn strands which will be used for the ITER TF coils should be chrome plated thickness of 1.8 mum to reduce AC loss and improve the thermal stability of cable. During heat treatment, the RRR value can be affected by Cr diffusion. In this work, the effect of Cr diffusion was systematically studied, using the KSTAR and ITER candidate strands. For the KSTAR strand, the Cu/non-Cu ratio was systematically varied from 1.53 to 0.69 by chemical etching whereas the samples were heat treated by the same schedule. For the ITER candidate strand, on the other hand, the Cu/non-Cu ratio was fixed to the specification value of 1.0, and the variation of the RRR value was studied with respect to the heat treatment schedule, especially the retention time of the 650degC plateau was varied from 100 to 200 hours. It was also compared with the Cr diffusion distance obtained from EPMA (electron probe microanalysis). We found that the RRR value of the ITER candidate strand becomes lower than the ITER requirement of 100, if the heat treatment at 650degC is longer than 200 hours. The RRR can be reached up to 161 when the duration of 650degC plateau is reduced to 100 hours, while satisfying all other ITER requirements including the critical current density.</P>
기어 마모 패턴을 고려한 치형 마이크로 지오메트리 수정 방안 연구
신경호(Kyeongho Shin),정의일(Uiil Jeong),김동현(Donghyeon Kim),김영민(Yeongmin Kim),임정택(Jeongteck Lim) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11
As eco-friendly demands increase, the trend in the global automobile industry is developing eco-friendly vehicles of electric powertrain. In this paper, we study on tooth micro-geometry modification by considering gear wear pattern. We measured NVH of In-Wheel assembly after total endurance test of In-Wheel vehicle. We analyzed the cause of In-Wheel assembly noise and compared noise before and after durability. We made 3D tooth wear model based on measurement data for gear wear conditions. Using Romax designer, we analyzed load distribution and transmission error values. The dynamic contact load value before and after wear was compared to confirm the change in NVH performance in dynamic state according to wear.
청소년의 사회관계, 스트레스 및 일탈이 생활만족에 미치는 영향에 대한 탐색적 연구
김경호(Kim, Kyeongho),이기홍(Yi, Gihong) 한국인구학회 2016 한국인구학 Vol.39 No.3
이 연구는 청소년의 몇 일반적 특성, 사회 관계, 스트레스 및 일탈이 생활 만족에 미치는 영향에 대한 것이다. 이 연구의 기본 문제 의식은, 비록 탐색적 수준에 머무르더라도, 간단한 모형을 통해 특정 요인을 중심으로 청소년의 생활 만족을 파편적으로 설명하는 경향을 넘어 다양한 요인들을 한 모형 내에서 분석하기를 지향하는 것이다. 자료는 중, 고등학생을 대상으로 연세대학교 사회발전연구소와 한국방정환재단이 조사한 ‘한국 어린이-청소년 행복 지수’의 2012년 것을 사용하였다. 이 연구의 주요 발견 사항을 가장 큰 회귀 분석 모형을 쓴 분석 결과를 바탕으로 설명하면 다음과 같다. 첫째, 조사 대상자의 일반적 특성들 중, 성별, 거주 지역, 학년, 학교폭력 경험, 계층 의식, 부모 화목이 청소년 생활 만족도에 영향을 미치는 것으로 드러났다. 둘째, 이 자료에 있는 변수들 중 사회적 관계를 나타내는 또래 관계, 사제 관계, 부모 관계 모두가 청소년 생활 만족에 영향을 미치는 것으로 나타났다. 셋째, 일탈 충동과 위험 행동 역시 청소년 생활 만족도에 영향을 주는 것으로 분석되었다. 이러한 분석 결과는, 앞으로 청소년 생활 만족도에 영향을 주는 요인들이 더욱 복합적으로 연구되어야 한다는 함의를 경험적으로 제시한다. 후속 연구에서는 이 연구에서는 같은 독립 변수로 다루어진 변수들 간의 관계를 다룰 수 있는 경로 분석과 같은 테크닉이 사용될 만하다. This research aims to, at the level of exploration, manifoldly analyze the influence of social relationship, stress. and deviation on youth’s life satisfaction. The data set used for this research is the Korea Children-Youth Happiness Index survey that the Korea Bhang JeongHwan Foundation and Yonsei Institute for Social Development Research collected from middle and high school students in 2012. Major findings of this research are as follows. First, general characters such as sex, region, the level of school, grade, school violence, private tutoring, stratification consciousness, Second, youth’s social relationships, such as peer relationship, teacher-student relationship, parent-child relationship, influence life satisfaction. Third, deviation impulse and risk behavior also influence it. As youth’s social relationships influence their life satisfaction as such, policies should help their social relationships to grow optimally. This research academically implies that youth’s life satisfaction needs to be studied more manifoldly using a more complex model.
청소년의 스마트폰 중독 및 생활 스트레스가 자살충동에 미치는 영향에 대한 연구: 2)사회적 지지의 조절 효과를 중심으로
김경호 ( Kyeongho Kim ),이기홍 ( Gihong Yi ) 한국조사연구학회 2016 조사연구 Vol.17 No.4
본 연구는 청소년의 스마트폰 중독과, 생활 스트레스가 자살충동에 미치는 영향을 확인하고 그 변수들에 대한 사회적 지지의 조절 효과를 검증하여, 궁극적으로는 청소년의 자살을 감소시키는 방안을 모색하는 데 기여함을 목표로 한다. 그러기 위하여 `2016 한국 어린이-청소년 행복 지수`를 -검정, 회귀분석 등을 통해 분석한 결과 연구 대상자 중 약 4분의 1이 자살충동을 경험했다고 답했다. -검정 결과, 스마트폰 중독과 생활 스트레스는 공통적으로 여학생, 고등학생, 학교폭력의 피해 경험이 있는 학생, 경제 수준이 낮은 집단, 그리고 잠이 부족한 집단이 더 취약한 것으로 드러났다. 자살충동은 이러한 집단들 외에 게임 경험이 있는 집단에서도 많이 나타났다. 회귀분석 결과, 스마트폰중독과 생활 스트레스는 자살충동에 영향을 미치는 것으로 분석되었다. 또한 스마트폰 중독과 생활 스트레스에 사회적 지지가 조절 효과를 보이는 것으로 분석되었다. This research on youth aims to confirm the influence of smartphone addiction and life stress on suicidal impulse and to test the moderation effect of social support, ultimately to contribute to reducing youth suicides. The data set used is `2016 Children-Youth Happiness Index`, with which t-test, regression analyses, etc. were run. About a quarter of the respondents answered to have experienced suicidal impulse. According to t-tests, both smartphone addiction and stress show more strongly in the groups of female students, high schoolers, school violence experiencers, lower economic statuses, and sleeplackers than in the respectively opposite groups. As far as suicidal impulse is concerned, game experience additionally turns out an important factor. Regression analyses conclude that smartphone addiction and life stress influence suicidal impulse, and that the moderation effect of social support thereon also exists.
김경호(KyeongHo Kim),송경환(KyungHwan Song),한재환(JaeHwan Han) 한국농업경제학회 2020 農業經濟硏究 Vol.61 No.3
Consumers are getting interested in safe and beneficial foods as the economy grows and their income level increases. This study aims to investigate consumers’ perceptions toward black garlic and to analyze the factors of determining their purchase intention. According to the consumer survey, consumers believe that black garlic has more health benefits than general garlic. Besides, it turns out that consumers who have purchase experience of black garlic are very satisfied with it, and have the most preference for concentrate on processing types. The results indicate that diversification and enhancement of processing types of black garlic are needed for consumption expansion in the future. Empirical findings show that the more consumer significantly considers a price the more their purchase intention decreases. On the other hand, as consumers have purchase experiences and higher interest in black garlic, they are more likely to be positive for purchasing them.