Analysis on Characteristics of Occurrence Time and Region by Mountainous Sediment Disaster in Korea

Youn Tae Lee,Jin Hak Kim,Ju Ung Yun3 위기관리 이론과 실천 2021 Crisisonomy Vol.17 No.8

우리나라의 경우 지형, 지리적 여건으로 인하여 도시화에 따른 산지개발이 진행된 지역이나 산지 주변의 인구 밀집지역에서 단기간의 집중호우가 발생하면 산지토사재해로 인한 대규모 피해를 입을 수 있으나 피해예상범위 등을 사전에 예측하는 데 많은 어려움이 따르므로, 인명과 재산피해가 예상 되는 지역에 예방대책을 수립하는 데 한계가 있다. 따라서 우리나라에서 발생한 산지토사재해의 발생시기별, 행정구역별 특성을 분석한 결과, 재해대응에 취약한 새벽 및 야간시간대에 피해가 높았 고, 농산촌 지역뿐만 아니라 도시생활권에서도 발생빈도 증가와 함께 피해가 증가하는 것으로 나타 났다. 산지토사재해의 발생시간 및 지역적 발생특성 분석을 통해 피해 저감을 위한 방안에 대하여 고찰하고, 향후 지속적인 연구가 수행된다면, 안정성이 보장된 생활공간을 확보함으로써 인명 및 재산피해를 저감하고, 건축물 예방강화 및 법제도의 개선 등 비구조물 대책과의 연계방안을 제시하 여 산지토사재해지의 종합적인 비구조물 대책을 수립하는 데 필요한 기초자료를 제공할 수 있을 것이다. In Korea, mountainous sediment disaster can occur anytime everywhere in the area where mountain development has progressed by urbanization or densely populated area around mountain due to topographic and geological conditions. However, the mountainous sediment disaster has many difficulties in predicting the expected damage range, there is a limit to preparing precautionary measures in the areas where many casualties and properties are expected. This study was carried out to analyze occurrence and damage situation by sediment disaster in order to identify occurrence characteristics of sediment disaster. As a result, it showed that the damage caused by sediment disaster are high at dawn and night time vulnerable to recognize and respond to disaster. And it was found that the damage increase not only in rural areas but also in urban areas with increasing occurrence frequency. If the analysis for the time and regional characteristics of mountainous sediment disaster is conducted, it will be possible to provide basic data to establish comprehensive non-structural measures for mountainous sediment disaster by securing a stable living space.

Factors Affecting Embryogenic Culture Initiation from Undeveloped Seeds of Satsuma Mandarin (Citrus unshiu)

Jin-Ung Yun,Bo-Kyong Kim,Seong-Beom Jin,Soon Young Ahn,Young Hyo Kim,Doo-Khil Moon,Kwan Jeong Song 한국원예학회 2006 Horticulture, Environment, and Biotechnology Vol.47 No.5

To develop an efficient embryogenic culture in satsuma mandarin, some factors related to physiological and environmental conditions were investigated during embryogenic culture initiation from undeveloped seeds of ‘Miyagawa Wase’ and ‘Okitsu Wase’ satsuma mandarin. Much more undeveloped seeds were obtained from larger fruits and the number of large seeds was positively correlated with fruit size. However, large seeds showed lower frequency in initial callus induction and somatic embryogenesis. Effects of culture condition, medium type, carbohydrate source, and agar concentration on initial callus induction and embryogenesis were further evaluated. There was no effect of culture condition of darkness or light. MT and l/2EME media were effective in ‘Miyagawa Wase’ and ‘Okitsu Wase’, respectively. In the experiment of carbohydrate source, 3% sucrose was more effective than 5% sucrose or 2% glycerol. In addition, agar concentration higher than 1.2% was favorable to callus induction in both cultivars.

Identification of Zygotic and Nucellar Mandarin Seedlings Using Randomly Amplified Polymorphic DNA

Jin-Ung Yun,Hee Beom Yang,Yong-Hwan Jung,Su-Hyun Yun,Kwang Sik Kim,Chan-Shick Kim,Kwan Jeong Song 한국원예학회 2007 Horticulture, Environment, and Biotechnology Vol.48 No.3

The study aimed at evaluating an efficiency of cross breeding in ‘Miyagawa Wase’ and ‘Okitsu Wase’ satsuma mandarin and ‘Shiranuhi’ mandarin through investigating the seed and seedlings formation, the frequency and position of zygotic seedlings, and the influence of pollen parents using randomly amplified polymorphic DNA (RAPD). Seedlings were in vitro cultured with seeds obtained from four crosses of ‘Miyagawa Wase’ (Citrus unshiu) × ‘Ponkan’ (C reticulata), ‘Okitsu Wase’ (C unshiu) × ‘Swingle Citrumelo’ (C. paradisi × Poncirus trifoliate), ‘Shiranuhi’ [(C unshiu × C. sinensis) × C. reticulata] × ‘Ponkan’ (C. reticulata), and ‘Shiranuhi’ [(C. unshiu × C. sinensis) × C. reticulata] × ‘Swingle Citrumelo’ (C. paradisi × P. trifoliate). RAPD analysis was conducted with five primers selected from screening 77 primers based on DNA amplification of parent plants. Seed formation including total seeds and full sized seeds per fruit between ‘Miyagawa Wase’ and ‘Okitsu Wase’ was not different statistically. However, seed formation of ‘Shiranuhi’ mandarin was significantly affected by pollen genotype. Average seedlings number per seed was not different effectively. The frequency and positioning patterns of zygotic seedling were different in each cultivar. The results suggest that seed formation, polyembryony, and frequency and positioning of zygotic seedling in some citrus having polyembryony might be affected by seed and pollen parents.

코로나 전극의 육각 배치에 따른 이온풍 분포 및 추력 특성 연구

윤웅희(Ung-Hui Yun),이헌경(Heon-Gyeong Lee),정재승(Jae-Seung Jung),권기진(Ki-Jin Kwon),김진규(Jin-Gyu Kim) 한국조명·전기설비학회 2018 조명·전기설비학회논문지 Vol.32 No.1

Ionic wind is an electro-hydrodynamic phenomenon that occurs when a corona discharge occurs between two asymmetric electrodes. Because the ionic wind does not need mechanical rotating parts unlike conventional motors and has a high energy efficiency to generate the wind, various researches have been conducted to apply ion wind to the fields of electrostatic precipitators, air purifiers, fluid pumps, cooling, propulsion. This study is for basic research of ion thruster and we investigated the characteristics of ionic wind distribution and Thrust according to hexagonal arrangement of corona electrodes. Experimental results show that the ionic wind distribution was strongest at the part where the corona electrode was disposed, and weakened at the part farther away, indicating a ‘V’ shape. The calculated thrust force using ionic wind distribution was weaker than the thrust force using corona current and the thrust force patterns were also completely different.

Development and Effect of Trauma Nursing Education and Skill Support(TESS) for Trauma Nurses

Jang Myung Jin,Kim Ki Ung,Kim Kyung Mi,Baek Hae Jun,Lim Kwang Kyun,Lee Ji yun,Jo Jin Su,Chol Mi Na,Choi Jin Oh,Lee Eun Jeong,Wang Sun Ho,So Min 한국간호과학회 2023 한국간호과학회 학술대회 Vol.2023 No.11

특별강연 및 일반연제 발표 : 정기 혈액 투석을 위한 동정맥루 형성 시기에 대한 연구

김진수 ( Kim Jin Su ),김미혜 ( Kim Mi Hye ),갈웅호 ( Gal Ung Ho ),신표진 ( Sin Pyo Jin ),윤현진 ( Yun Hyeon Jin ),한병근 ( Han Byeong Geun ),이은영 ( Lee Eun Yeong ),최승옥 ( Choe Seung Og ) 대한신장학회 1999 춘계학술대회 초록집 Vol.18 No.2

An Analysis of the Combination Frequencies of Constituent Medicinal Herbs in Prescriptions for the Treatment of Stroke in Korean Medicine: Determination of a Group of Candidate Prescriptions for Universal Use

Yun, Byeong Cheol,Pae, Seung Bin,Han, Yoo Kyoung,Choi, Moo Jin,Choi, Byung Tae,Shin, Hwa Kyoung,Baek, Jin Ung Hindawi Publishing Corporation 2016 Evidence-based Complementary and Alternative Medic Vol.2016 No.-

<P>In contrast to Western medicine, which typically prescribes one medicine to treat a specific disease, traditional East Asian medicine uses any one of a large number of different prescriptions (mixtures of medicinal herbs), according to the patient's characteristics. Although this can be considered an advantage, the lack of a universal prescription for a specific disease is considered a drawback of traditional East Asian medicine. The establishment of universally applicable prescriptions for specific diseases is therefore required. As a basic first step in this process, this study aimed to select prescriptions used in the treatment of stroke and, through the analysis of medicinal herb combination frequencies, select a high-frequency medicinal herb combination group for further experimental and clinical research. As a result, we selected some candidates of a medicinal herb combination and 13 candidates of a medicinal herb for the treatment of stroke.</P>

토석류의 발생 규모 및 빈도에 따른 바닥스크린 상의 토석류 포착 형태의 차이

Jin Hak Kim,Kun W oo Chun,Jung Il Seo,Suk W oo Kim,Ju Ung Yun,Kye W on Jun 위기관리 이론과 실천 2017 Crisisonomy Vol.13 No.4

이 연구에서는 모형수로 실험을 통하여 측면스크린이 부착된 바닥스크린 상에서 토석류의 발생 규모및 빈도에 따른 포착형태의 변화를 파악하고, 그로 인해 바닥스크린의 종단 길이 결정에 필요한 설계기준의 마련을 목적으로 바닥스크린 상에 퇴적된 계상재료의 양과 입경크기를 10cm의 종단구간별로 구분하여 해석하였다. 그 결과, 토석류의 규모가 증가함에 따라 그 이동속도(운동에너지)에 영향을 미쳐 바닥스크린 상단면부에서는 퇴적토석의 첨두부를 구성하는 큰 입경의 계상재료가 하류방향으로 이동하는 거리가 증가하였으며, 결국 총 유출량 또한 증가하는 것으로 나타났다. 또한, 토석류의 발생 빈도가 증가함에 따라 선행 토석류가 바닥스크린의 부재 간격을 축소시켜 후속 토석류가 퇴적토사를 월류한 후 하류로 유출되는 것으로 나타났으며, 그 과정에서 단일 토석류에 의하여 형성되었던 퇴적형태, 특히 첨두부의 형태가 변형되는 것으로 나타났다. 이는 바닥스크린 종단규모에 영향을 받은 것으로 판단된다. To examine change in storage pattern by magnitude and frequency of debris flows on the flat-board debris-flow breaker (FDB) equipped with side screen and to derive design criteria for a longitudinal length of FDB, we surveyed the amount and grain-size of bed-materials stored by 10-cm distance on the upper surface of FDB using an experimental flume. The results showed that, on the upper surface of FDB, large-sized materials composing storage peak were moved to downstream with increasing volume of supplied bed-materials due to their increasing transport velocity and kinetic energy, thereby increasing total exported volume. In addition, its slit apertures were reduced by the bed-materials stored previously. Therefore, the bed-materials supplied secondarily destroyed and overpassed the peak formed previously, due to the limitation of the FDB length.

Proteomic Characterization of the ‘Agakong’, a Small-seeded Recombinant Inbred Line Derived from ‘Eunhakong’ (Glycine max) × ‘KLG10084’ (Glycine soja)

Ung-Kyu Choi,Hyun Su Ryu,Hyun Tae Kim,Sun Mi Yun,Su-Jin Lee,Jae Dek Choi,Young-Hyun Hwang,Soo Young Choi,Oh-Shin Kwon 한국식품과학회 2008 Food Science and Biotechnology Vol.17 No.5

This study was conducted to identify the differences in proteomic characteristics of ‘Agakong’, recombinant inbred line, and its parental genotypes ‘Eunhakong’ (Glycine max) and ‘KLG10084’ (G. soja). The isoflavone content of ‘Agakong’ was 3 times higher than that of its parental lines. A combined high-throughput proteomic approach was employed to determine the expression profile and identity of proteins using 2-dimensional gel electrophoresis and matrix-assisted laser desorption ionization time-of-flight (MALDI-TOF) mass spectrometry. The overall distribution patterns of proteins are quite similar, but lots of protein spot intensities varied among the genotypes. A total of 41 proteins, representing significant difference in the quantities of protein among the lines, were successfully identified. Among them, more than 50% of the proteins identified were subunits of glycinin and β-conglycinin, 2 major storage proteins. This study showed that the proteomic analysis could help to define specific changes in protein level and composition, which can occur in the generation of new soybean varieties.

An Examination of Optimum Slit Aperture Suited to Flat-board Debris-flow Breaker in Residential Piedmont Areas

Jin Hak Kim,Kun Woo Chun,Jung Il Seo,Suk Woo Kim,Ju Ung Yun,Kye Won Jun 위기관리 이론과 실천 2016 Crisisonomy Vol.12 No.4

이 논문에서는 토사처리 공간이 제한적인 생활권 산록지역에서의 토석류 피해를 저감시키기 위한신공법인 바닥스크린의 최적 순간격을 도출하기 위한 목적으로, 모형수로 상에서 바닥스크린의 토석류 포착 효과를 정량적⋅정성적으로 평가하였다. 그 결과, 바닥스크린은 상류로부터 유입되는 토석류의 유수와 토석을 순간적으로 분리함으로써 토석류의 운동에너지를 급격히 감소시켜 퇴적을 유도하는것으로 나타났으며, 더불어 바닥스크린의 설치구간을 중심으로 하류지역에 큰 피해를 줄 수 있는 큰입경의 계상재료를 우선적으로 포착하는 것으로 나타났다. 특히, 순간격이 클수록 바닥스크린 하단면부에 큰 입경의 공급재료가 다량 퇴적되는 것으로 나타났으며, 이는 구조적 특성 상 반드시 제석이요구되는 바닥스크린이 계상재료의 평균입경과 동일한 순간격을 지닐 때가 상대적으로 최적의 기능을한다는 것을 역으로 나타낸다. 그러나 한편으로는 최적 순간격의 경우에도 바닥스크린의 측면부로토석이 이탈하는 것을 확인할 수 있었으며, 이는 바닥스크린의 상단면에 다양한 입경의 토석이 쌓이면서 토석류의 선단부를 뒤따르던 토석들의 이동방향이 측면부로 변하였기 때문으로 판단된다. This study examines how to derive an optimal slit aperture of flat-board debris-flow breaker (hereafter FDB), which is a new method for reducing damages by debris flows in residential piedmont areas. The results show that FDB divided momentarily debris flows into water and bed-materials, thereby inducing storage of the (especially with large grain-sized) materials and causing potentially huge damages. In addition, with increasing slit aperture, the amount of large grain-sized materials increased under the lower surface of FDB, which reflects inversely that, under the consideration that FDB requires obligatorily dredging works, FDB with the slit aperture equal to mean grain-size of bed-materials is effective for capturing debris flows. However, on the upper surface of FDB with the optimum slit aperture, its considerable amount was dropped out to both sides of FDB. This finding indicates that a pile of the materials formed on the upper surface of FDB changed flow direction of the materials arriving at the heels of the pile.