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金大年,陸昌洙,李鎬珍 충북대학교 농업과학기술연구소 1990 農業科學硏究 Vol.8 No.2
In order to evaluate applicability of silicate slag, as a silicate fertilizer, a field experiment was conducted on the sandyloam soil with low silica content and its application levels of silicate slag were 150, 300, 450, and 600kg/10a, respectively. The results obtained are summarized as follows. 1. By the application of slag, the hights and number of tillers of the rice plant were suppressed in the early growing stage, but thereafter they were increased gradually. 2. As the level of silicate slag was increased, the silica contents of rice plant were increased gradually in contrast with wollastonite plot. 3. The rice yield was increased with the application of silicate slag, while number of grains per panicles and ripening ratio didn't show a big difference among wollastonite, silicate alsg, and 50% nitrogen-applied plot. 4. By increasing with application of silicate slag, rice yield was somewhat higher in the 50% nitrogen-applied plot as compared with nitrogen-applied standard plot. 5. The more amount of silica absorbed increase, the more rice yield appears as followings ; y= 1. 496X+552.77, y is yield, X is silicate absorbed. 6. Available SiO2 contents in soil after harvest of rice was highest at application rate of silicate slag, 450 kG/10a.
형광검출 역상 액체크로마토그래피에 의한 Histamine의 정량
유희춘,김형룡,김상현,김대기,이영미,김형민,안년형,신태용 우석대학교 의약품개발연구소 1996 藥學硏究誌 Vol.1 No.-
Histamine을 정확하고 신속하게 정량하기 위해 9.Fiuorenylmethyl chloroformate를 형광유도체화제로 하여 역상 HPLC법으로 정량하였다. 히스타민을 형광유도체화할 때 반응액의 pH, 반응시간, 형광유도체화제의 농도 등 최적 반응 조건을 검토하였다. 이 방법으로 히스타민을 분석한 결과 0.1~0.5ug/ml의 농도범위에서 상관계수가 0.922인 양호한 직선성을 나타내었으며 검출한계는 0.01??/ml였다. A rapid and simple method for the determination of histamine by reverse-phase high performance liquid chromatography with fluorescence detection was established. 9-Fluorenylmethyl chloroformate(FMOC) was used as fluorescent derivative reagent. The optimum conditions for the derivatiation such as pH, reaction time and he concentration of FMOC were investigated. Linearity of calibration curve was obtained between 0.1ug/ml/and 0.5ug/ml(r=0.922) and the limit of detection was 0.01ug/ml.
자율주행 로봇의 외부환경 이해를 위한 기하학적인 빌딩 분석
김대년(Dae-Nyeon Kim),찐황헌(Hoang-Hon Trinh),조강현(Kang-Hyun Jo) 제어로봇시스템학회 2010 제어·로봇·시스템학회 논문지 Vol.16 No.3
This paper describes an approach to analyze geometrical information of building images for understanding outdoor environment of autonomous navigation robot. Line segments and color information are used to classify a building with the other objects such as sky, trees, and roads. The line segments and their two neighboring regions are extracted from detected edges in image. The model of line segment (MLS) consists of color information of neighbor regions. This model rules out the line segments of non-building face. A building face converges into dominant vanishing points (DVPs) which include one vertical point and one of five horizontal points in maximum. The intersection of vertical and horizontal lines creates a facet of building. The geometrical characteristics such as the center coordinates, area, aspect ratio and aligned coexistence are used for extracting the windows in the building facet. In experiments, 150 building faces and 1607 windows were detected from the database of outdoor environment. We found that this result shows 94.46% detection rate. These experimental images were all taken in Ulsan metropolitan city in Korea under difference of viewpoints, daytime, camera system and weather condition.
자율주행 차량을 위한 주행방향 추정 및 도로 노면표시 검출 방법에 대한 연구
김대년(Dae-Nyeon Kim) 한국조명·전기설비학회 2016 조명·전기설비학회논문지 Vol.30 No.4
This paper presents a method to detect the road marking and estimates road following direction by a front camera in vehicle for an autonomous navigation. An algorithm is proposed which is based on the following processing steps. In the preprocessing step, the proposed method sets the vehicle lane as a region of interest. Estimation of the vehicle direction is estimated as the coordinate conversion and the estimated parameter of the road system. The processing for detecting the lane mark on the road detects the lane as obtained vanishing point using connected straight line component according to Hough transform, application of Bird’s eye view algorithm. Road marking detection of template matching using normalized correlation of coefficient was detected. In experiment, we detect the road mark such as arrows mark, crosswalk notice mark, and so on. We think that the proposed algorithm can be extended easily to solve the problem of the identification of all types of road markings.
LabVIEW를 이용한 철도 선로전환기 융설용 태양광-풍력 발전 모니터링 시스템의 적용 방법
김대년(Dae-Nyeon Kim),김덕현(Deok-Hyun Kim),최정원(Jeong-Won Choi) 한국조명·전기설비학회 2013 조명·전기설비학회논문지 Vol.27 No.10
The monitoring system is an absolutely required system for improving a performance to consider the situation for the hybrid generation of the photovoltaic (PV) and wind power (WP) energy experimental research complex. This system is to monitor with the railroad switching point heating system using LabVIEW to the hybrid generation of the PV and WP. The monitoring system of this paper is a program monitoring the hour, day and total of the voltage and current that made from the hybrid generation of PV and WP. In experiment, we acquired the power data according to time at the day of PV and WP. We have confirmed the possibility of the real time monitoring system using LabVIEW with the railroad switching point heating system as the hybrid generation of the PV and WP.
탄소재 성형품에 대한 정밀 치수 검사 시스템에 관한 연구
김대년(Dae-Nyeon Kim) 한국조명·전기설비학회 2016 조명·전기설비학회논문지 Vol.30 No.2
This paper proposes a method to develop a high-precision dimension measurement system using a linear variable differential transformer sensor. The Dimension targets for measurement is carbon material vanes of key element in the rotating parts within vehicle circulating pump. Data acquisition system for dimension measurement is designed using the NI Compact RIO. And the program applying the dimension measurement algorithm is built using NI LabVIEW. The dimension measuring program is composed of a FPGA program, Real Time program and Host program. The method of the experiment compares master vane with target vane for measure the length of the carbon material vane. The experimental results confirmed the usefulness of the accuracy within ±4㎛.