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쥬라기 대전 화강암 시추코아의 암석 지화학 연구

  • 홍영국;홍세선
    • Proceedings of the KSEEG Conference
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    • 2003.04a
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    • pp.298-301
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    • 2003
  • 한국지질자원연구원 내를 중심으로 유성일대에 분포하는 화강암은 대전지역을 관입한 화강암체의 일부로서 대부분 백운모를 함유한 복운모화강암으로 구성된다. 이 화강암은 주변에 분포하는 편상 화강섬록암이나 흑운모화강암에 비해 옥천층군의 잔류물을 거의 함유하지 않으며 암맥상의 폐그마타이트가 관입된다. 이 화강암은 중리질 내지 세립질이며 백운모가 흑운모보다 더 우세하거나 비슷하게 산축되는 등 다른 암석류에 비해 백운모를 다량 함유하는 것이 특징이다. (중략)

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Quality characteristics of clean rice with the processing system (클린라이스 제조방식에 따른 백미의 품질 특성)

  • Kim, Oui-Woung;Kim, Hoon;Lee, Hyo-Jai;Ahn, Jae Hwan
    • Food Science and Preservation
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    • v.23 no.4
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    • pp.522-529
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    • 2016
  • Clean rice is useful to save time and labor force against washing rice in the household. Nevertheless the quality characteristics of the rice were not established well since the quality characteristics of the rice depend on types of the processing system. The aims of the current study were to understand the quality characteristics of clean rice prepared from the dry, semi-dry, and wet types of processing systems, and to suggest the appropriate processing system for production of clean rice. Here, we found that the quality of clean rice was improved with the increasing whiteness of rice by the dry type, although the whiteness of rice should be below 42 to satisfy 16.0 NTU of the turbidity for higher head rice ratio. Also, both the semi-dry and wet type systems showed higher ratio of head rice than the dry type system at below 16.0 NTU of the turbidity. These results imply that the wet type is more suitable for the place where rice is consumed fast, and the semi-dry type is more proper for long term storage of rice.

Effect of Temperature and NaCl Concentration on the Characteristics of Baik Kimchi (백김치의 특성에 미치는 온도 및 소금농도의 영향)

  • 강근옥;김우정;임현수
    • Korean journal of food and cookery science
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    • v.13 no.5
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    • pp.569-577
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    • 1997
  • The characteristics of an watery type Kimchi prepared without the addition of red pepper, were investigated focused on the effect of salt concentration and fermentation temperatures. The Chinese cabbage was brined in various NaCl solution to obtain the final salt concentration range of 0.5∼3.0% of the brined cabbage. Fermentation of Baik Kimchi was carried out at 10, 20, 30$^{\circ}C$ with addition of equal weight of water to brined cabbage. The result showed that the fermentation was generally increased as the NaCl concentration decreased for all temperatures based on the data of pH and total acidity. The higher temperature resulted in an increase in fermentation rate in terms of pH and total acidity. The organoleptic flavor properties of fresh sourness and acidity were significantly affected by NaCl concentration and fermentation temperatures. The Baik Kimchi prepared with 1.0% NaCl and fermentation at 30$^{\circ}C$ was found to be most acceptable.

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Inhibitive Effects of Baik-Kimchi Against Amaranth Toxicity in Rats (백김치의 Amaranth투여 흰쥐에 대한 독성억제효과)

  • ;Suzuki T.
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.30 no.6
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    • pp.1246-1252
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    • 2001
  • A feeding experiment was conducted on rats to investigate the inhibitive effects of baik-kimchi against the toxicity of Amaranth (Am, Food Red No.2) on growth, fecal weights and bulk, and the digestibility of protein and lipid. The body weight of the Am diet group (5% Amaranth) remained at the lowest level of all diet groups, because of diarrhea symptoms throughout the feeding period, 229.8 g of total body weight or 79.4% of the basal diet group (289.4 g). However, in the baik-kimchi diet group (10% baik-kimchi powder+5% Amaranth) no diarrhea symptoms were evident and total body weight remained at a similar level (280.3 g) to the basal diet group. It therefore appears that baik-kimchi offers an inhibitive effect against the toxicity of Am. In the baik-kimchi diet group, the total fecal weight (173.99 g/3 weeks) was 15 times that of the basal diet group (11.13 g/3 weeks) suggesting that baik-kimchi has the effect of increasing fecal bulk. The large intestine and the cecum of the baik-kimchi diet group were significantly (p<0.05) heavier than those of the Am diet group. The digestibility of protein (50.26%) and lipid (58.37%) in the Am diet group was very low in comparison with these in the baik-kimchi diet group (87.30% and 92.12%, respectively). This result indicates that the low digestibility of these nutrients in the Am diet group was directly responsible for the decrease of weight. Consequently, it is demonstrated that baik-kimchi can inhibit the effects of the toxicity of Am in rats.

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Differential Driving of Inverter for High Uniformity LCD TV Backlight (LCD TV용 고균일도 백라이트 구동을 위한 Differential Driving 인버터)

  • Chun Young Tea;Lim Sungkyoo
    • Journal of the Microelectronics and Packaging Society
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    • v.11 no.2 s.31
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    • pp.37-41
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    • 2004
  • Parallel combination of cold chathode fluorescent lamps (CCFL) are widely used as the light sources of LCD TV backlight. Brightness uniformity is safisfied by using one transformer per one CCFL. Instead of using one transformer per oneCCFL, one transformer is used to drive 8 CCFLs by using differential driving method. A differential driving inverter with two transformers is developed to drive 16 CCFLs of 26' backlight for LCD TV. The brightness uniformity of $88\%$ was obtained by driving 26' backlight with the developed differential driving inverter successfully.

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New species of Euonymus (Celastraceae): E. baekdusanensis M. Kim (화살나무속(노박덩굴과)의 신종: 백두산회나무(Euonymus baekdusanensis M. Kim))

  • Hwang, Yong;So, Soonku;Kim, Muyeol
    • Korean Journal of Plant Taxonomy
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    • v.43 no.3
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    • pp.168-170
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    • 2013
  • A new species, Euonymus baekdusanensis M. Kim (Celastraceae), has been named and described from Mt. Baekdu of the Korean peninsula. Euonymus baekdusanensis shares several characteristics (4-merous flowers, 4-angled capsule, warted branches and twigs, etc.) with its related species E. verrucosus Scopoli. It is, however, distinct from E. verrucosus which have small oblong leaves (6-7 cm), short petioles (1-2 mm), and small capsules (6-8 mm) by having large elliptical leaves (11-13 cm), long petioles (6-8 mm), and large capsules (12-15 mm).

The Study on the Possibility of Using Satellite in Monitoring Precursor of Magma Activity in the Baegdusan Volcano (인공위성을 이용한 백두산 화산 마그마 활동의 전조현상 인지 가능성 연구)

  • Lee, Deok-Su;Choi, Sung-Chan;Oh, Chang-Whan;Seo, Min-Ho;Ryu, In-Chang
    • The Journal of the Petrological Society of Korea
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    • v.22 no.1
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    • pp.35-47
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    • 2013
  • The Baegdusan Volcano which erupted violently at 1000 AD is still have possibility of eruption. Therefore, it is necessary to monitor regularly the possibility of eruption. However, it is very difficult to install regular monitoring system or to get regularly monitored data due to geopolitic problems. This is why we have to develop regular monitoring technique using satellite. The geoid in the Baegdusan Volcanic area calculated from gravity data obtained from GRACE satellite, decreased from 2002 to 2005. The period of decreasing is well matched with time when magma activities were recognized in the Baegdusan Volcanic area. The decrease in geoid is interpreted to be caused by the decrease of water storage. Considering that the amount of rainfall from 2002 and 2005 is almost constant, the decrease in geoid may be related to the magma activity under the Baegdusan Volcano. The geomagnetic total force in the Baegdusan Volcanic area measured by CHAMP satellite, decreased from 2000 to 2005 and increased after 2005. The period of decrease is well matched with the time with increased activity of magma chamber under the Baegdusan Volcano indicating that the decrease of geomagnetic total force is caused by demagnetization of surrounding rocks due to the increase of temperature of magma chamber. These data indicate the possbility of using change of geoid and geomagnetic total force observed by GRACE and CHAMP satellites for the monitoring of magma activity under the Baegdusan Volcano.

Study on the Floating bag Materials for Boats. (침몰 감지용 자동방식 공기 부양백 소재 개발)

  • Ahn, Tae-Kwang;Park, Chang-Hyuk;Ko, Ho-Nam
    • Proceedings of the KAIS Fall Conference
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    • 2009.05a
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    • pp.368-371
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    • 2009
  • 선박용 침몰방지용 부양백의 소재를 개발하는데 있어 부양백 내의 부양기체인 질소가스가 장기 유지특성 보유 소재(gas barrier properties), 코팅 경량 직물형태로서 경량성 보유 소재 기술, 장수명의 부양 백 소재 개발, Silicone/Nylon/Silicone 코팅 다층 구조의 고강도 유지 특성 유지 및 재활용성 특성 유지 부양백 소재를 개발하였다. 이들 소재를 개발하는데 있어 Nylon 직물별 물성 조사로 우리가 개발 목표로 하는 nylon의 denier 별로 구매하여 이들에 대한 기본물성인 인장특성, 내노화성, 기체투과도 및 복원성을 조사하였으며, Nylon 직물에 Silicone의 코팅시험을 실시하였고, 최적 코팅 silicone의 선정을 통해 최적의 균일한 두께 특성, 최적의 강도 유지특성 및 gas barrier 특성을 갖는 silicone 및 코팅두께를 선정하여 최종적으로 부양백용 gas barrier성 수지의 선정하였다.

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A Study On Extraction System Of Trackback Address For Knowledge Service Based On Using AJAX (AJAX를 이용한 웹 기반 지식 서비스의 트랙백 주소 추출 시스템에 관한 연구)

  • Ku, Min-O;Kyung, Min-Gi;Min, Dug-Ki
    • 한국IT서비스학회:학술대회논문집
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    • 2010.05a
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    • pp.547-552
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    • 2010
  • 지식서비스에서는 최근 자사의 지식정보에 대해 대표적인 지식 구축 채널로 발전중인 블로그(Blog)와의 연계를 추구하기 위해 트랙백(Trackback) 서비스 제공하고 있으며 이를 통해 자사를 넘어 다양한 블로그 서비스를 통해 지식 정보를 제공하고 있는 블로그 사이트들 과의 지식 체인(Knowledge Chain)을 형성하고 있다. 본 논문에서는 지식 체인 서비스를 제공하고 있는 다음 커뮤니케이션사의 지식 서비스에 대한 트랙백 주소 확보를 위한 구조 및 환경에 대해 분석 제공하고 있으며, 앞서 언급한 지식서비스와 블로그간의 지식 체인 형성시 필수적으로 요구되는 트랙백 주소 확보를 보다 용이하게 할 수 있도록 웹 기반의 비동기적 통신 스크립트 기술인 AJAX를 이용하는 클라이언트 측의 웹 어플리케이션 형태의 "트랙백 주소 추출 시스템"을 제시 구현하고 있다.

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Site Condition of Mt. Baekdu observatory (백두산 천문대 관측환경)

  • Park, Youngsik;Yang, Hong-Jin;Yim, Hong-Seo;Byun, Do-Young;Chung, Jong-Kyun;Choi, Young-Jun;Yim, Insung
    • The Bulletin of The Korean Astronomical Society
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    • v.44 no.1
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    • pp.61.1-61.1
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    • 2019
  • 2018년 7월 국회의원회관에서 백두산과학기지 구축 방안에 대한 포럼이 있었고, 2018년 11월 한국천문연구원에서는 백두산천문대 구축에 대한 포럼을 통해 광학, 전파, 태양 우주환경 그리고 전통천문 분야에 대한 연구 계획을 소개한 바 있다. 천문대를 건설하기 위한 기본적인 조건인, 기상, 청정일수, 습도, 광해, 시상 등의 정보들을 획득한 후 최종 관측소를 결정해야 한다. 그러나 우리는 북한에 대한 정보를 직접 획득할 수도 없기 때문에, 일단 필요한 정보들을 인터넷 자료를 활용하여 후보지역을 물색하고, 백두산 천문대 건설이 추진된다면 실제 사이트를 방문하여 최종 관측소 후보지역을 선정을 해야 할 것이다. 수집한 자료들 위주로 백두산 주변의 관측소 후보지역들에 대해 이야기 하고자 한다.

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