• Applied Biological Chemistry
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• v.36 no.1
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• pp.23-28
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• 1993

Glucosinolates from radish (Wangkwan, Daejangkun, Taebaek, Daebooryeung and No. 364) and its seed (Wangkwan) were identified, and their degradation product by heat treatment was analyzed. The Wangkwan variety contained much more types of glucosinolates than other radish varieties. Total glucosinolate contents of Wangkwan, Daejangkun, Taebaek, Daebooryeung, No. 354 and Wangkwan seed by GC method were 1.25, 1.10, 0.97, 0.96, 0.90 and 2.14 ${\mu}mole/g$, respectively. The indoleacetonitrile contents after 20 minutes' heat treatment at $100^{\circ}C$ from Wangkwan, Daejangkun, Taebaek, Daebooryeung, No. 364 and Wangkwan seed were 0.28, 0.20, 0.23, 0.21, 0.24 and 0.58 ${\mu}mole/g$, respectively. The heat treatment increased the thiocyanate ion contents in radish and its seed, and the contents were maximum at 30 min.

• The Journal of Engineering Geology
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• v.20 no.1
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• pp.71-78
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• 2010

The Gagok mine is a contact metasomatic deposit, located at Gagok-myeon, Samcheok city and Cheoram-dong, Taebaek city, Gangwon province. The deposit lies within the limestone of Myobong and Pungchon formations, and exists the contact of intrusive granite porphyry. In order to determine the direction and extension of mineralization in the gallery and around the entrance of the ore deposit, we used the ground magnetic survey, the direct current (dc) resistivity survey using dipole-dipole array, and resistivity tomography survey. The ground magnetic survey did not detect the anomalous zone due to ore deposit, while the dc resistivity survey and resistivity tomography survey were successful in delineating the anomalous zone related to the extension of fault toward $N50^{\circ}W$.

• Journal of the Korean Geographical Society
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• v.48 no.5
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• pp.615-628
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• 2013

The waterfall can be formed by difference between the height of up and down part in new channel, is formed by channel avulsion that rapidly changing of river channel course. This study described types and processes of waterfalls by channel avulsion, and analyzed rates and factors of waterfall recession, on object to 7 waterfalls in South Korea. Bulyeong falls at Uljin-gun, Yongchu falls at Yeongdeok-gun, Jikyeon falls at Yanggu-gun and Gwangpum falls at Uljin-gun are formed by natural incised meander cutoff. Samhyeongje falls at Taebaek-si and Guryong falls are formed by river capture processes, and Palbong falls at Chungju-si is formed by artificial channel cutting for farm land secured. The locations of waterfalls gradually moved to upstream over time by head erosion. The recession rates were measured by 3~4m/ka on Bulyeong falls, Yongchu falls, Jikyeon falls and Samhyeongje falls, to estimate of formation age. Recession rates of these 4 waterfalls were analyzed that have clearly positive correlations with drainage area, precipitation, corrosion and weathering capability of bedrock, and initial height of waterfall.

• Journal of Forest and Environmental Science
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• v.13 no.1
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• pp.81-89
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• 1997

Urban river needs continuous observation for the river conservation because river surrounding environment sensitivly is changed by human activity. In order to grasp the effect of human activity against Taebaek river in Chunchon city, this research analysed the channel shape change, fluctuation volume and bias degree over five times, for June, 1993 to June, 1996. The results were as follows : 1. The change of channel shape on each surveying time mainly occurred in June, 1996 and maximum deposition. $1,247m^3$ occurred on 19~20 section, maximum scouring, $340m^3$ occurred on 6~7 section, 2. When comparing with June, 1993, increased deposition volume of channelbed was about $4,600m^3$ in June, 1996, 3. The bias degree of channel mainly occurred in June, 1996 of surveying times and at 6, 7, 15, 16, 17, 18, 19, 20 line of surveying lines.

• Economic and Environmental Geology
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• v.42 no.4
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• pp.301-314
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• 2009

The Taebaeksan mineralized province, which is the most important one in South Korea, is rich in zinc-lead-tungsten-iron-copper-molybdenum-silver-gold mineral resources and has a diversity of deposit styles. These deposits principally coexist in time and space with porphyry-related epigenetic deposit such as skarn, hydrothermal replacement, mesothermal vein, and Carlin-like deposits. The magmatic-hydrothermal systems in the Taebaek fold belt is genetically characterized by the Bulguksa subvolcanic rocks(ca. $110{\sim}50\;Ma$) related to northwestward subduction of the paleo-Pacific Plate. The most important zinc-lead deposits in the area are the Uljin, Yeonhwa II and Shinyemi skarn, the Janggun hydrothermal replacement, and the Yeonhwa I intermediate-mixed (skarn/hydrothermal replacement) ones. In the present study, we present a compilation of metal production and mineral assemblage of the zinc-lead deposits. The metal difference of deposit styles in the area indicates a cooling path from intermediate-sulfidation to low-sulfidation state in the polymetallic hydrothermal system, reflecting spatial proximity to a magmatic source.

• Research in Plant Disease
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• v.10 no.4
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• pp.268-271
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• 2004

Occurrence and soil fumigation effect on black root rot of peony was investigated. Peony was severely infected to black root rot caused by Cylindrocarpon destructans in continuous cropping field, but in first cropping field was less infected. To control black root rot, soil improvement, soil fumigation and the root dipping in chemicals were trialed in peony continuous cropping field. Black root rot was not decreased by soil improvement, but incidence of black root rot of peony cultivated in continuous croping field of peony was decreased by soil fumigation with Dazomet GR. and dipping of peony root in chemicals.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 1995.04a
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• pp.100-109
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• 1995

철도는 대량수송 및 정시제 운행이라는 중요한 역할을 하면서도 다른 한편으로는 철도연변에 거주하고 있는 사람들에게 상당한 소음공해를 미쳐 정온한 생활환경을 누릴 권리를 침해하고 있음에도 불구하고 철도소음을 관리하는 기준이나 대책등이 아직 미미한 실정이다. 향후 5년 내에는 고속철도의 등장도 확실하지만 기존 재래식 철도에 대한 소음 실태 자료마저 충분치 않아 철도연변의 소음진동 문제를 해결하기 위한 기본적 수단인 소음 기준 제시를 위해서는 폭넓은 기초 자료확보와 새로운 관련연구가 요청되었다. 이러한 필요성에 따라 전기기관차를 중심으로 영동선, 중앙선, 태백선, 경인선, 경원선 및 대도시 도심지를 관통하는 호남선 및 경부선 중에서 측정환경이 양호한 22개 지역을 선정하여 기존 철도의 구간별 30분, 1시간, 2시간, 3시간 등가소음도를 측정하였고 선로의 조건, 열차의 종류 및 속도, 거리권별 등에 따른 개별열차 통행시의 소음특성을 조사하여 철도소음의 기준 설정과 방지대책 강구시에 활용할 수 있도록 하며, 열차 통행속도로부터 최고소음도를 추정하여 주변지역의 등가소음도를 산정할 수 잇는 예측식을 도출하여 측정방법 개정에 활용하고, 그리고 선로변에 위치한 공동주택을 대상으로 층별 철도소음 노출도와 열차통과시의 공동주택 실내.외의 소음도를 비교조사하여 벽체 차음 효과를 조사하였고 철도소음에 대한 주민반응 조사를 하였다.

• Journal of the Korean Home Economics Association
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• v.42 no.10 s.200
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• pp.1-10
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• 2004

The purpose of this study was to investigate what kinds of foods university students consume, how often they go out eating, and the regularity and amount of their meals. A questionnaire survey was conducted on 600 university student (home with Parents $40.8\%$: house of relatives $5.5\%$: boarding with cooking $43.3\%$: dormitory $10.3\%$). The main results are as follows: PIBW(percent ideal body weight) was under weight($49.2\%$), normal weight($40.7\%$), over weight($6.0\%$) and obese($4.2\%$). Many students had breakfast irregularly(boarding with cooking: $81.2\%$> home with parents: $71.8\%$> dormitory: $54.8\%$> house of relatives: $54.5\%$). Students who had a meal of average size were $32.5\%$(for breakfast), $61.3\%$(for lunch), and $39.5\%$(for dinner). Students who were home with parents and boarding with cooking had more eating for breakfast and lunch than those who were house of relatives and dormitory. Students who were home with parents and dormitory students ate more often milk, milk products, and kimchi than house of relatives and boarding with cooking students. Home with parents, boarding with cooking and dormitory students ate more often meat, milk, bread, fast food, and instant noodles than house of relatives students. Home with parents, house of relatives, and dormitory students ate more often fish, dried anchovy, and vegetables than boarding with cooking students. Dormitory students ate more often snacks, such as alcohol and fruits, than home with parents, house of relatives, and boarding with cooking students.

• Journal of The Korea Institute of Healthcare Architecture
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• v.20 no.4
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• pp.17-25
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• 2014

Purpose: Generally, rural housing in Korea have had target of people who are in good physical health rather than the disabled. Therefore, it is difficult to offer high quality residential environment for the elderly and the disabled. The purpose of this study is to propose the ways to promote ease and safety in the rural housing. Methods: This study evaluates the accidents, improvement factors, satisfactions, complaints by space of 153 rural housing in Taebaeksi. Results: This study divides the a rural house into 7 sectors : a passage to entrance, an entrance hall, a livingroom, a bedroom, a bathroom, a kitchen, and utility room. this study propose the following plan that rural housing to be barrier free space. First, in passage to entrance of the house, people with disabilities should not experience difficulties in walking, so installing ramps to remove the stepped slope grade without slip so that the floor finish should be. Second, entrance hall need more space to change and keep wheelchair. Third, switches and handle should be installed various height and form depend on the behavior of residents. Forth, install a drain to make no changes in level of bathroom. Implications: This research could be the basic data to renovate the rural housing.

• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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• v.7 no.2
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• pp.6-11
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• 2001

Distribution status and economic analysis of packed radish in Korean markets(Chunbuk and Kangwon in producing area and Taebaek, Kyunggi, and Cheongyang for comparing tile quality) from November, 1999 to April, 2000 was surveyed. Distribution method and marketing of radish was different by producing areas and shipping methods. Quality of radish in the areas had a great difference, and especially standard deviation of volume of radish of Taebaek was highest. The packaging of radish was almost not, and in case of pack, corrugated paperboard was used as packaging material of outer packages. Non-packed radish in economic analysis was more economic than packed radish.