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近赤外 分光分析法을 利用한 芍藥根 paeoniflorin 및 一般 成分 檢定
Kwang Hee Kang(姜光熙),Myoung Gun Choung(鄭名根),Byung Joo Kim(金炳鑄) 한국육종학회 1996 한국육종학회지 Vol.28 No.2
Near Infrared Reflectance Spectroscopy(NIRS) is accepted as today’s most versatile method for rapid chemical analysis. NIRS has been used as a tool for the accurate, rapid and nondestructive assay of small grain and forage crops. The objective of this study was to establish the rapid, ease and accurate analysis method for paeoniflorin and some chemical components in Paeoniae Radix using NIRS system. NIRS used in this study was filter type instrument, Neotec 102. To obtain a useful calibration equation multiple-linear regression between the data, by chemical analysis and by NIRS method was analysed. Standard error of prediction(SEP) and simple correlation(Y) for unknown samples were calculated using obtained equation. Simple correlation(Y) and SEP for paeoniflorin were 0.905 and 0.663. The simple correlation(Y) for total sugars, starch, crude protein, crude fiber and crude ash were 0.823, 0.814, 0.792, 0.860 and 0.863, respectively. SEP for total sugars, starch, crude protein, crude fiber and crude ash were 6.830, 7.800, 0.981, 1.170 and 1.040, respectively. It was concluded that the NIRS method would be applicable for the rapid determination of paeoniflorin and some chemical components in Paeoniae Radix.
풍동실험을 통한 능동위상배열레이더에서 다층레이돔에 작용하는 공기력과 풍압의 실험적 연구
임성환,강광희,최지호,이승호,권순덕,Yim, Sung-Hwan,Kang, Kwang-Hee,Choi, Ji-Ho,Lee, Seung-Ho,Kwon, Soon-Duck 한국군사과학기술학회 2014 한국군사과학기술학회지 Vol.17 No.1
In this paper, we investigated the sensitivity of aerostatic force coefficients of multi-layer radom in the various wind speeds. The test was conducted in KOCED Wind Tunnel Center in Chonbuk National University, and wind speeds were in the range from 5 m/s to 26 m/s in order to determine the Reynolds number independence. The test results of present multi-layer radom were not affected by the Reynolds number, The maximum positive pressure coefficient was found to be 1.08 at the center of the front of the plane in angle of attack of 0 degree, the maximum negative pressure coefficient was -2.03 at the upper right corner in angle of attack of 120 degree, while maximum drag coefficient was 1.11 in angle of attack of 180 degree.
손동훈(Dong-Hun Son),강광희(Kwang-Hee Kang),최지호(Ji-Ho Choi),박도훈(Do-Hoon Park) 한국소음진동공학회 2014 한국소음진동공학회 학술대회논문집 Vol.2014 No.10
The development of a vehicle-mounted radar to detect the location of enemy artillery is mainly mounted during operation to the mobility of the equipment and efficiency of utilization range. It is equipped with an electronic device responsible for the operation of the radar system. El ectronic equipments is performed functionality imparted without an error-specific in spite of disturbances such as vibration / shock caused by vehicle movement. Therefore, vibration / shock resistance is held to prevent damaging from vibration / shock generated from the outside environment during operation. In addition, a standardized and specified cabinet structure equipped with electronic equipment is placed in shelter to ensure additional safety for vibration / shock. In this study, it is evaluated by analytical method with vibration / shock resistance of the cabinet structures for ensuring structural safety factor is applied to the aluminum. It is verified the reliability of the structure and structural dynamics to verify by calculated natural frequencies adding the weight of the cabinet structure and the structural displacement and stress results confirmed with vibration / shock caused by the vehicle movement.
군용 차량 탑재 체계의 진동 및 충격 분석 기법에 대한 연구
손동훈(Dong-Hun Son),강광희(Kwang-Hee Kang),최지호(Ji-Ho Choi),박도훈(Do-Hoon Park),황대진(Dae-Jin Whang) 한국소음진동공학회 2015 한국소음진동공학회 학술대회논문집 Vol.2015 No.4
Recently developed weapons systems are developed primarily as a vehicle-mounted tactical mobility or securing and increasing operability with equipment. The weapon system is to be designed so that the vibration and shock transmitted to the insulation from the road surface. Therefore, military vehicles and is also a tendency to mount the most recently developed independent suspension. This recent trend is to have the need to look for the right to verify the vibration and shock testing of vehicle systems with the US military standard independent suspension for use in weapons development. In this study, it is confirmed whether test standard is suitable for performance verification of this system by comparing test results of the vibration and shock of the developed vehicle with US military standard specifications.