• Title/Summary/Keyword: MGII

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Study on Marine GIS Data Standards (해양GIS 데이터 표준 개발 방안에 관한 연구)

  • Park Jongmin;Suh Sanghyun
    • Journal of the Korean Society for Marine Environment & Energy
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    • v.4 no.4
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    • pp.51-60
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    • 2001
  • Recently there have been many trials and studies for various approaching to build the effective application environments for Marine Geographic Information System(GIS) in the cross sections of marine and GIS fields. But the most of these contributions were focused on their special purposes, and these vertically unmanaged and independent development necessarily caused more basic issues, which would be one of the primary elements to establish Marine Geospatial Information Infrastructure(MGII). Herein, we discuss a brief conceptual aspects of Marine GIS and its components, and then we try to give some fundamental issues especially concentrated on the needs and importance of standardization as well as guidelines for that.

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Analytical Method Development of Avicularin and Quercitrin in Astilbe chinensis Extract Using HPLC (HPLC를 이용한 노루오줌 추출물의 Avicularin 및 Quercitrin 분석법 개발)

  • Kwon, Jin Gwan;Jung, Yeon Woo;Seo, Changon;Hong, Seong Su;Shin, Hyun Tak;Jung, Su Young;Choi, Jeong June;Kim, Jin Kyu
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.45 no.4
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    • pp.333-340
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    • 2019
  • This study attempted to eatablish a high performance liquid chromatography (HPLC) analysis method for the determination of avicularin, quercitrin as a part of the quality control for the development of functional cosmetic materials from Astilbe chinensis extract. HPLC was performed on a Capcell Pak C18 MGII column with a gradient elution of 0.05% (v/v) trifluoroacetic acid (TFA) and acetonitrile at a flow rate of 1.0 mL/min at 30 ℃. The analyte was detected at 254 nm. The HPLC method was performed in accordance with the international conference on harmonization (ICH) guideline (version 4, 2005) of analytical procedures with respect to specificity, precision, accuracy, and linearity. The limits of detection and quantitation of avicularin and quercitrin were 0.094 and 0.285 mg/mL, 0.031 and 0.095 mg/mL respectively. Calibration curves showed good linearity r2 > 0.99990 for avicularin and r2 > 0.99994 for quercitrin. Precision of analysis was satisfied with less than 0.59% for avicularin and 0.63% for quercitrin. Recoveries of quantified compounds ranged from 100.97 to 101.77% for avicularin and 100.18 to 100.32% for quercitrin. These result indicated that the established HPLC method is very useful for the determination of marker compounds in A. chinensis extracts.

Strategy for Constructing Marine Geographic Information System of KOREA (한국의 해양지리정보체계 구축을 위한 전략)

  • 정희균;서상현;김석구
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2001.10a
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    • pp.187-190
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    • 2001
  • At a turning point of new paradigm, each countries in the world are try to search solutions to a current problems of the times in maritime than land. In special, as a maritime power that KOREA is surrounded by the sea on three sides, our country place more weight on maritime. To accomplish a powerful maritime power, it is necessary to create a digital marine spatial on the basis of Marine and Coastal GIS. This planning is establishing that our country, to construct a systematic, efficient Marine and Coastal GIS Infrastructures, is to analyze the present state of internal & external, law and planning related in Marine and Coastal GIS, and establish vision, mission, core values, goals, strategies by setting a basic concept of Marine GIS

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Simultaneous Determination of Avicularin and Quercitrin in Astilbe chinensis by HPLC

  • Seo, Changon;Jung, Yeon Woo;Kwon, Jin Gwan;Hong, Seong Su;Lee, Ji Eun;Shin, Hyun Tak;Jung, Su Young;Choi, Chun Whan;Kim, Jin Kyu
    • Proceedings of the Plant Resources Society of Korea Conference
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    • 2019.04a
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    • pp.102-102
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    • 2019
  • This study developed a HPLC analysis method for the determination of avicularin (AL) and quercitrin (QT) in Astilbe chinensis by HPLC. HPLC was performed on a Capcell Pak C18 MGII column ($4.6{\times}250mm$, $5{\mu}m$) with a gradient elution of 0.05% (v/v) trifluoroacetic acid (TFA) and acetonitrile at a flow rate of 1.0 mL/min at $30^{\circ}C$ and a UV detection wavelength of 254 nm. The analytical method was validated for its specificity, precision, accuracy, and linearity. The limits of detection and quantitation were AL 0.09 and 0.28 mg/mL, QT 0.03 and 0.09 mg/mL respectively. Calibration curves showed good linearity (AL r2 > 0.99990 and QT r2 > 0.99994), and the precision of analysis was satisfied (less than AL 0.59%, QT 0.63%). Recoveries of quantified compounds ranged from AL 100.57 to 102.08%, QT 99.94 to 100.64%. These results indicate that the developed HPLC method was applied successfully to the detection of AL and QT in A. chinensis.

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