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Development of a Selective Medium for the Fungal Pathogen Cylindrocarpon destructans Using Radicicol
Kang, Yunhee,Lee, Seung-Ho,Lee, Jungkwan The Korean Society of Plant Pathology 2014 Plant Pathology Journal Vol.30 No.4
The soil-borne ascomycete fungus Cylindrocarpon destructans causes ginseng root rot disease and produces various secondary metabolites such as brefeldin A and radicicol. The slow growth of this fungus compared with other plant pathogenic and saprophytic fungi in soil disturbs isolation of this fungus from soil and infected ginseng. In this study, we developed a selective medium for C. destructans using radicicol produced by this fungus. Supplementing 50 mg/L of radicicol to medium inhibited the mycelia growth of other fungi including Botrytis cinerea, Rhizoctonia solani and Alternaria panax, but did not affect the growth of C. destructans. In addition, conidia germination of other fungal species except for C. destructans was inhibited in submerged culture supplemented with radicicol. This medium provides a very efficient tool for isolating C. destructans and also can be used as an enrichment medium for this fungus.
Kang Yunhee,Park Chulwoo,Young Anna Marie Pacheco,Kim Jihye 한국영양학회 2022 Nutrition Research and Practice Vol.16 No.4
BACKGROUND/OBJECTIVES This study examined socio-economic differences in diverse food consumption among children 6–23 months of age in South Asia and Southeast Asian countries. SUBJECTS/METHODS Data from Demographic and Health Surveys in four countries in South Asia (n = 15,749) and four countries in Southeast Asia (n = 10,789) were used. Survey-design adjusted proportions were estimated for the following 10 food items: grains, legumes, dark green leafy vegetables (DGLV), vitamin A-rich fruits, vitamin A-rich vegetables, other fruits and vegetables (OFV), fish, meat, dairy, and eggs. An equity gap was defined as an arithmetic difference in the proportion of each food item consumed in the past 24-hours between the wealthiest and lowest quintiles and between rural and urban areas, denoted by percentage points (pp). RESULTS The consumption of most of the 10 food items was higher in the wealthiest quintiles and urban areas across eight countries. The size of equity gaps was greater in Southeast Asia than in South Asia, particularly for vitamin A-rich fruits (3.3–30.0 pp vs. 0.3–19.6 pp), vitamin A-rich vegetables (12.1–26.7 pp vs. 2.4–5.9 pp), meat (17.7–33.4 pp vs. 3.4–13.4 pp), and dairy (14.7–32.5 pp vs. 3.3–11.4 pp). However, the size of equity gap in egg consumption was greater in Southeast Asia than South Asia (11.2–19.8 pp vs. 11.0–26.7 pp). Relatively narrower gaps were seen in the consumption of grains (0.3–12.9 pp), DGLV (0.6–12.4 pp), and fish (0.1–16.8 pp) across all countries. CONCLUSIONS Equity gaps in food consumption differed by socio-economic status and region. Reducing equity gaps in nutrient-rich foods and utilizing regionally available food resources may increase child dietary quality.
Yunhee Kang,Seungheon Han 위기관리 이론과 실천 2022 Crisisonomy Vol.18 No.10
본 연구는 코로나19 팬데믹으로 인해 빈곤층에서 증가한 경제적 위기와 영양적 위험, 그 대응전략을 탐색하기 위하여, 방글라데시 랑푸르도 카하롤군 5세 미만 자녀를 둔 여성 45명을 대상으로 심층면 접조사를 실시하였다. 대부분의 응답자는 코로나19 대유행 이후 실직 및 소득 감소를 경험하였고, 주식 및 영양가 있는 식품을 구매할 수 없었으며, 특히, 아동과 임산부는 영양적으로 부족하고 불균 형한 음식을 섭취하고 있었다. 이러한 위기에 대응하기 위해 각 가구들은 가축을 팔거나, 대출을 받고, 저축을 사용하는 등 다양한 임시방편적인 전략을 취했다. 특히, 대출을 받은 경우 대출금을 상환할 수 없어 다시금 심각한 경제적⋅정신적 스트레스의 악순환에 빠졌다. 응답자들은 이러한 위기를 미래에도 극복할 수 없을 것이라는 만연한 무력감과 좌절감을 표현했다. 조사 당시 지역정부 와 NGO의 지원이 부족했고, 지역사회 주민들 간 상호 부조 역시 경제적 어려움으로 인해 거의 발견 되지 않았다. 본 연구는 지속 가능한 대응전략으로서 자급자족을 촉진하는 소득증대 지원 등의 확대 와 지역사회 회복력 강화를 위한 후속 연구를 제안하였다. Globally, the COVID-19 pandemic heightened the risk of economic and nutritional instability, particularly among the poor population. We conducted in-depth interviews with 45 women with young children in Kaharole Upazila, Rangpur Division, in Bangladesh. Most respondents reported reduced income or job loss since the pandemic and could not afford to purchase staples and nutrient-rich foods. Young children and pregnant women were at risk of having inadequate diets. The households used stress coping mechanisms such as selling livestock, taking loans, and spending savings several times. The coping mechanisms again put the respondents into a vicious economic and severe mental stress cycle as they had no way to repay the loan. Respondents expressed helplessness and frustration as a result of the economic downturn. There was a lack of relief assistance from local governments or civil societies. Our findings showed poor Bangladesh women faced financial hardship, limited food choices, and provisional coping strategies. It is advised that disaster relief efforts be directed toward helping the affected population maintain their standard of living and building local community resilience.
Design of Testbed for Agile Computing of MapReduce Applications by using Docker
Kang, Yunhee The Korea Contents Association 2016 International Journal of Contents Vol.12 No.3
Cloud computing makes extensive use of virtual machines that permit for workloads, as well as resource usage, to be isolated from one another, and a hypervisor can be used by a virtual machine to construct cloud computing infrastructure. However, the hypervisor has high resource usage when constructing virtual machines, which results in a waste of allocated resources when not activated. Docker provides a more light-weight method to obtain agile computing resources based on a container technique that handles this problem. In this study, we have chosen this specific tool due to the increasing popularity of MapReduce and cloud container technologies such as Docker. This study aims to automatically configure Twister workloads for container-driven clouds. Basically, this is the first attempt towards automatic configuration of Twister jobs on a container-based cloud platform VM for many workloads.