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김배수(Baesoo Kim),백성렬(Sungryeol Baek),이정기(Jungki Lee),박용성(Yongsung Park),이종현(Jonghyun Lee) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
There are many effort on Eco-drive. So Governments and vehicle companies are paying attention and effort to encourage economical driving practices for drivers and develop eco-vehicles. To encourage economical driving for drivers is presented as much more efficient method than improving vehicle"s performance. So A study on eco-driving display devices is concerned and variety study is progressing about it. However, Those kind of devices aren"t able to offer information about variety of driving conditions and only show basic driving information and fuel economy usually. So This study introduces display method on real-time presented driving information items, visual/auditory items and driving evaluation items as variety of driving conditions.
김배수(Baesoo Kim),박용성(Yongsung Park),이정기(Jungki Lee),최승환(Seunghwan Choi) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
Studies that vehicles are developed with driving support device for economic driving by itself even if same condition driving patterns are the most important issues. Especially among the active device, this paper is studied about Active Eco that controlled acceleration, up/down shifting logics depending on the vehicle velocity. Through these control logics, how can drivers save the vehicle gases and which APS section is the best for efficient economy driving and fuel economy using Active Eco.
갯봄맞이(Glaux maritima L.) 실생의 단마디배양을 통한 기내증식
배수지(Su-Ji Bae),강범창(Beum-Chang Kang),정미혜(Mihye Jeong),김수종(Soochong Kim),김창길(Chang Kil Kim),한증술(Jeung-Sul Han) 한국원예학회 2016 원예과학기술지 Vol.34 No.3
본 연구는 원예적 가치가 높은 멸종위기 해안식물인 갯봄맞이(Glaux maritima L.)의 기내번식 체계를 확립하기 위하여 수행되었다. 2009년 개인 원예가로부터 갯봄맞이가 심겨진 화분을 분양 받아 줄기와 꽃의 색을 기준으로 ‘Red type’(RT)과 ‘Pistachio type’(PT)으로 구분한 후 본 연구의 식물 재료로 사용하였다. 분양 받은 모식물체는 예전 연구 보고에서와 일치하는 꽃, 삭과 및종자의 외형을 나타내었다. 기내 파종 후 4℃의 저온에서 4주 이상 처리하였을 때 종자 발아율이 최대에 달했는데, 이는 종자흡습에 이어서 저온처리가 종자의 발아에 필수적이라는 것을 나타내는 것이다. 기내 실생은 모식물체와 동일하게 ‘RT’와 ‘PT’ 표현형으로 분리하는 것이 관찰되었다. 새롭게 신장한 액아 유래 신초의 마디 수 합을 기준으로 판단한 증식 효율은 표현형과 배지의 종류에 따라 다소 차이가 있기는 했지만 기내 실생에서 절취한 제4절과 제5절을 배양했을 때 가장 높았다. 더불어, ‘RT’와 ‘PT’ 표현형의 마디를 BA 0.5 ㎎·L<SUP>-1</SUP> 단용 배지와 BA 0.5 ㎎·L<SUP>-1</SUP> + IAA 0.5 ㎎·L<SUP>-1</SUP> 혼용 배지에서 각각 배양하는 것이 신초 분화율을 가장 높였다. 마디배양 유래 유식물체는 배양실에서 양호하게 기외 순화되었고, 비록 내륙 환경에서 담수 관수를 하는 재배법을 사용했지만 염습 자생지에서와 동일하게 유사일년생 생활환을 완성하였다. 본 연구는 갯봄맞이의 기내 번식에 관한 한 최초인 것으로 판단되며 본 연구의 결과는 이 희귀 종의 서식지외 보존, 자생지 복원 및 원예용으로의 개발에 유용하게 활용될 수 있을 것으로 사료된다. This study was conducted to establish an in vitro propagation system for sea-milkwort (Glaux maritima L.), which is an endangered coastal plant species with high horticultural value. Two phenotypes, ‘Red type (RT)’ and ‘Pistachio type (PT)’ based on the colors of stem and flower, were obtained from a personal horticulturist in 2009 and used for this study as plant materials. The stock plants showed typical morphologies in flower, capsule, and seed appearances as previously reported. Low temperature treatment at 4℃ for four or more weeks after in vitro sowing maximized seed germination percentage, indicating that imbibition of seed and subsequent low temperature treatment are crucial for its germination. The in vitro seedlings had phenotypic variation, falling into ‘RT’ and ‘PT’ classes like the stock plants. Although slight differences depending on genotype and medium were recognized, the fourth or fifth nodes detached from the in vitro seedlings revealed the best multiplication efficacy when estimated on the basis of total number of nodes of newly developed axillary shoots. In addition, the nodes from ‘RT’ and ‘PT’ regenerated the most shoots on medium supplemented with 0.5 ㎎·L<SUP>-1</SUP> BA alone and 0.5 ㎎·L<SUP>-1</SUP> BA plus 0.5 ㎎·L<SUP>-1</SUP> IAA, respectively. The node culture-derived plantlets were well acclimatized in a culture room ex vitro and completed the pseudo-annual life cycle coincident with that in the natural salt march habitat with the current cultivation method of applying fresh water-irrigation under an inland environment. This work represents the first report of in vitro propagation of sea-milkwort. Thus, our study will contribute to exo-habitat conservation and natural habitat restoration of this endangered species in addition to development of a horticultural product.
전산화 단층 촬영을 이용한 상악 전치부 자연치의 순측과 구개측 골의 두께 계측
배수용(Soo-Yong Bae),박정철(Jung-Chul Park,),손주연(Joo-Yeon Sohn),엄유정(Yoo-Jung Um),정의원(Ui-Won Jung),김창성(Chang-Sung Kim),조규성(Kyoo-Sung Cho),채중규(Jung-Kiu Chai),김종관(Chong-Kwan Kim),최성호(Seong-Ho Choi) 대한치과의사협회 2009 대한치과의사협회지 Vol.47 No.10
Purpose : Anterior region is crucial area for esthetic implant restoration. However, the alveolar process undergoes atrophy after removal of teeth and creates unfavorable situation for implant installation. The knowledge of the thickness of alveolar bone is required to estimate and expect the bone resorption after extraction. The aim of this study is to measure facial, palatal and faciopalatal bone thickness on maxillary anterior teeth. Methods : Facial, palatal, and faciopalatal bone thickness were measured on the computed tomography (CT) images from 57 patients, using an image analyzer program (Ondemand 3D<SUP>®</SUP>, Cybermed, Seoul, Korea). Results: The thickness of facial bone in incisors, lateral incisors and canines were less than 1 mm. The thickness of facial bone increased from anterior to posterior region and the thickness of palatal bone increased from posterior to anterior region. Conclusion ; The measurement can be used for planning implant surgery before extraction. CT has are clinically useful in the evaluation of thickness of alveolar bone.