• Proceedings of the KIPE Conference
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• 2008.06a
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• pp.499-501
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• 2008

본 논문은 공진요소를 포함한 고전압 플라이백 컨버터의 설계 절차를 제시하는 것으로써, 고압 플라이백 컨버터 설계 시 기존 플라이백 컨버터의 Power Stage 설계 식을 적용하였을 때 원하는 출력 전압을 얻지 못한다. 고전압을 발생시키기 위한 고전압 플라이백 변압기는 2차 측의 많은 권선수와 높은 전압 때문에 기생 커패시턴스(parasitic capacitance)가 매우 크고, 과도상태에서 컨버터 전류 및 전압의 기생 공진(parasitic resonance)이 심각하게 발생한다. 이러한 공진요소를 고려하여 고전압 플라이백 컨버터의 특성을 해석하고 설계 절차를 제시한다. 이를 통해 고전압 플라이백 컨버터의 소형화 및 경량화를 도모하고, 고압 전원장치의 기술 축적을 위해 연구되었다. 제안된 회로의 동작원리를 설명하고, 타당성을 실험을 통하여 검증한다.

• 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.

• 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).

• Journal of Korean Foot and Ankle Society
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• v.23 no.1
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• pp.35-38
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• 2019

Lipoma arborescens or synovial lipomatosis is a rare disorder that is characterized by mature fat infiltration of the hypertrophic synovial villi, most frequently affecting the supra-patellar pouch of the knee. This paper presents a case of lipoma arborescens of the ankle joint bilaterally in an adult patient with involvement of both the intra-articular synovium and the synovial sheath of the tendons around the ankle.

• 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.

• 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.

• 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.

• Defense and Technology
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• no.8 s.150
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• pp.48-59
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• 1991

소련 지상군은 현재 총 4천5백여대의 헬기를 여러가지 목적으로 운용하고 있다. 무장헬기가 2천50대를 차지하고 있음 주력은 1천4백20대의 Mi-24로 구성되어 있다. 물자, 병력 수송용으로는 1천여대의 Mi-8외에 Mi-6, Mi-26, Mi-10 등을 운용하고 있으며, 별도로 전자전 장비를 갖춘 2백여대의 Mi-8를 운용하고 있다. 소련 헬기로서 최초로 실용화 되어 양산된 Mi-2도 6백여대 이상이 아직 일반 목적용으로 운용 중에 있다

• Life and Agrochemicals
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• s.278
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• pp.22-25
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• 2012

2011년 우리나라 농약시장은 2010년 보다 생산은 물론 출하도 줄어든 것으로 나타났다. 한국작물보호협회가 최종 집계한 자료에 따르면 2011년도 농약 생산량은 1만7천9백91톤으로 전년도 2만1백66톤 보다 10.8%가 감소했으며 출하량은 1만9천1백60톤으로 전년도 2만4백31톤 보다 9.3%가 감소한 것으로 나타났다. 2008년 이후의 지속적인 감소 추세는 기후변화에 의한 영향과 재배면적의 감소에 의한 것으로 예측된다. 지난해 국내 농약 생산 출하 현황을 작물별, 약제별, 제형별로 자세히 알아본다.

• The Science & Technology
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• v.29 no.12 s.331
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• pp.31-33
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• 1996

1850년 호주에서 최초의 대학으로 문을 연 시드니대학교는 4천여명의 교직원과 3만명의 학부 대학원생이 재학하고 있는 명문대로 4백50만권의 장서를 소장하고 있는 대학도서관을 비롯해 시드니를 중심으로 한 11개 지역에 3백17개 빌딩으로 이루어져 있다. 지난 7월에는 제3회 환태평양 한국학 국제회의가 이곳에서 열려 1백30여편의 논문이 발표되었으며 91년에는 한국어강좌도 개설되어 현재 1백40여명의 수강생이 언어 문학 및 역사를 배우고 있다.