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Determination of hesperidin in mixed tea by HPLC
한샘,목소연,김혜민,이정민,이동구,이숙영,김종기,김선주,이상현,Han, Saem,Mok, So-Youn,Kim, Hye-Min,Lee, Jeong-Min,Lee, Dong-Gu,Lee, Sook-Young,Kim, Jong-Kee,Kim, Sun-Ju,Lee, Sang-Hyun Institute of Agricultural Science 2011 Korean Journal of Agricultural Science Vol.38 No.2
The content of hesperidin in the mixed tea, which was composed of dried orange peel, laurel leaf, mulberry leaf, silver magnolia leaf, oriental melon tap, cassia seed, and licorice root, was determined by high performance liquid chromatography (HPLC). Hesperidin was quantified by a reverse phase column with gradient solvent system (watcr:acetonitrile = 80:20 to 35:65 for 30 min) and UV/VIS detection (280 nm). The How rate was kept constant at 1.0 ml/min. The content of hesperidin in the mixed tea was measured in depending on extraction time 1, 2, 3, and 4 min (29.07, 52.39, 52.45, and 88.35 mg/g, respectively).
블루투스와 스마트워치를 활용한 자동차 안전 및 편의 서비스
박한샘(Han-Saem Park),임노간(Noh-Gan Im),조지연(Ji-Yeon Cho),이종배(Jong-Bae Lee),이성수(Seongsoo Lee) 한국전기전자학회 2020 전기전자학회논문지 Vol.24 No.4
본 논문에서는 블루투스와 스마트워치를 사용하여 운전자 및 탑승자의 사고 감지, 납치 감지, 차량 내 아동 방치 감지, 주차 위치 기록, 스마트키 기능을 수행하는 자동차 안전 및 편의 서비스를 제안한다. 스마트폰에 기반한 기존 서비스는 스마트 폰을 차량 내에 거치하거나 가방 내에 휴대하는 경우가 많아서 사고 및 납치 상황 등을 정확하게 감지하지 못하는 경우가 많다. 이에 반하여 스마트워치는 사용자가 늘 착용하고 있으며 심박수도 모니터링할 수 있으므로 사고 및 납치 상황 등을 좀 더 정확하게 감지할 수 있다. 제안하는 서비스는 스마트워치의 가속도 센서, GPS 센서, 심박 센서, 블루투스 링크 상태 등의 정보를 통해 운전자 및 탑승자에게 발생하는 다양한 상황을 파악하고 사고 통보, 상황 녹음 등 필요한 동작을 수행한다. 또한 제안하는 서비스는 차량과 OBD-II로 연결되어 도어 개폐, 비상등 점멸 등 필요한 동작을 수행한다. In this paper, automotive safety and convenience service is proposed based on bluetooth and smart watch. The proposed service performs accident detection, kidnapping detection, kid-left-alone-in-car detection, parking location recording, and smart key function. Conventional smartphone services often fails to precisely recognize accident and kidnapping situations since smartphone is located on the dashboard or in the bag. On the contrary, smartwatch recognizes accident and kidnapping situations more precisely since it is always worn on the wrist with hearbeat monitoring. The proposed service recognise various situations around drives and passengers using acceleration sensor, GPS sensor, heartbeat sensor and bluetooth link status. It also performs accident notice, sound recording, and other necessary actions. It also performs door opening, door closing, hazard light flickering, and other necessary actions using OBD-II connection to the vehicle.
Determination of hesperidin in mixed tea by HPLC
Saem Han(한샘),So-Youn Mok(목소연),Hye-Min Kim(김혜민),Jeong-Min Lee(이정민),Dong Gu Lee(이동구),Sook-Young Lee(이숙영),Jongkee Kim(김종기),Sun-Ju Kim(김선주),Sanghyun Lee(이상현) 충남대학교 농업과학연구소 2011 농업과학연구 Vol.38 No.2
The content of hesperidin in the mixed tea, which was composed of dried orange peel, laurel leaf, mulberry leaf, silver magnolia leaf, oriental melon tap, cassia seed, and licorice root, was determined by high performance liquid chromatography (HPLC). Hesperidin was quantified by a reverse phase column with gradient solvent system (watcr:acetonitrile = 80:20 to 35:65 for 30 min) and UV/VIS detection (280 ㎚). The How rate was kept constant at 1.0 ㎖/min. The content of hesperidin in the mixed tea was measured in depending on extraction time 1, 2, 3, and 4 min (29.07, 52.39, 52.45, and 88.35 ㎎/g, respectively).