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천연과즙을 이용한 Aloe vera L.의 callus 배양과 이들 추출물의 항산화 및 항균활성 효과 검정
이인순(In-Soon Lee),배동녁(Dong Nyeok Bae),권오민(Oh Min Kwon),한구태(Gu Tai Han),김대환(Dae Hwan Kim),오명원(Myeong Won Oh),이지홍(Ji Hong Lee),문혜원(Hae-Yeon Moon) 한국생물공학회 2013 KSBB Journal Vol.28 No.6
In order to obtain functional materials from aloe callus, we cultured Aloe vera L. leaf on MS medium added 0.2 mg/L IAA, 0.3 mg/L kinetin and 100 mg/L grape or/and apple juice for 30 days. While a callus differentiation during callus culture did not show, the cultured leaves were uniquely released extracellular material into the agar plate. After cultivation for 18 days, the cultured leaf and agar were harvested for extraction a functional material. The materials extracted were measured on the amount of total phenols, flavonoids and polysaccharides and determined on the antioxidant and antimicrobial activity. In result, callus extracts of additive free (CT) and added apple juice (2T) had more amount of phenol compound (659 μg/mL, 533 μg/mL) and flavonoid (580 μg/ mL, 501 μg/mL) than natural leaf (p: 525 μg/mL, f: 301 μg/ mL). However, the extract of natural leaf had the better effect of lipid peroxidation and polysaccharide content than the culture extract. All samples extracted had same effect on the nitrite scavenging activity. On the other hand, only 2T extract showed excellent 72% nitric oxide scavenging activity. The agar extract was also confirmed to contain polyphenol compound and polysaccharide content that had antioxidant and antimicrobial activity partly.
IMU 센서 보정을 통한 정밀 위치인지 알고리즘에 대한 연구
이인남(In-Nam Lee),권영민(Young-Min Kwon),임창동(Chang-Dong Lm),송병훈(Byung-Hun Song) 대한전기학회 2014 정보 및 제어 심포지엄 논문집 Vol.2014 No.10
In this paper, we developed a recognition system which is the precise position through structured inertial navigation system. IMU(Inertia Measure Unit) includes an accelerometer, a gyro sensor and a geomagnetic sensor. The non-compensation sensor includes a variety of error components such as sensor noise and drift. The proposed algorithm proves the robust parameter variation by measuring the gait data. we converted the navigation coordination due to convenience of the position data.
이인현(In-Hyun Lee),하승태(Seung-Tae Ha),김민호(Min-Ho Kim),서정욱(Jung-Wook Seo),김두일(Du-Ill Kim),홍현표(Hyun-Pyo Hong),이병곤(Byung-Gon Lee),반극동(Keuk-Dong Ban) 한국철도학회 2012 한국철도학회 학술발표대회논문집 Vol.2012 No.10
본 논문은 자동 전원절체 통과시스템을 대상으로 수행 중인 신뢰도 및 위험도 분석 과제 결과의 일부분이다. 자동 전원절체 통과시스템은 전차선로 절연구간을 전기차량이 무정전으로 통과할 수 있도록 개발한 시스템으로 크게 열차검지장치와 전원절체 개폐장치로 구성된다. 이 중에서 전원절체 개폐장치를 대상으로 신뢰도 분석을 수행한 것으로 각 컴포넌트의 고장률 예측을 위한 방법, 절차 그리고 시스템 신뢰도 모델링을 수행한 결과를 기술하였다. 신뢰도 예측은 Telcordia SR-332 Issue 2 규격서를 사용하였으며, 향후 이 결과는 위험도(risk) 분석을 위한 기반 자료로 이용될 예정이다. This paper is parts of a result of a project on reliability and risk analysis for automatic changeover system. The automatic changeover system is developed in order that an electrical train can pass through catenary neutral section in an uninterruptible way, and it’s comprised of a train detector and a power switching system. Reliability analysis is performed for a power switching system of them, and a method and a process to predict a failure rate of each component and a result of performing a system reliability modeling are described in this paper. Reliability prediction is in accordance with Telcordia SR-332 Issue 2, and the result will be used for risk analysis as basic input in the future.
김두환,이인복,최동윤,송준익,전중환,하덕민,Kim, Doo-Hwan,Lee, In-Bok,Choi, Dong-Yoon,Song, Jun-Ik,Jeon, Joong-Hwan,Ha, Duk-Min 한국축산환경학회 2013 한국축산시설환경학회지 Vol.19 No.2
This survey was conducted to investigate the current state of odor emission and control from 48 site of Hanwoo, dairy, swine and poultry farms in Korea. On-site complex odors assessment by the method of 6 step direct sensory evaluation and ammonia concentrations by portable gas detector on the boundary line of farms were evaluated and detected as 1.11 & 2.78 ppm, 1.67 & 2.56 ppm, 1.91 & 2.89 ppm, 1.8 & 2.4 ppm and 1.33 & 2.33 ppm, respectively. Almost of Hanwoo, dairy and poultry farms were nothing the complaints occurred for the last 2 years, however as 60% of swine farms were suffered odor complain. All of livestock operations were used the additives for improving the farm environment and spent the considerable costs for odor reduction. There were several plans almost farms, as a fortify maintenance, keep clean, tree planting, expansion facilities for manure treatment or odor reduction.
김두환,하덕민,이인복,최동윤,송준익,Kim, Doo-Hwan,Ha, Duck-Min,Lee, In-Bok,Choi, Dong-Yun,Song, Jun-Ik 한국축산환경학회 2014 한국축산시설환경학회지 Vol.20 No.2
This study was conducted to investigate the dispersion prediction of odor from swine farms in Korea. Gaussian Plume model used in considering of farm size, wind velocity, atmospheric stability and threshold odor unit to prediction of odor dispersion based on the survey on current state of odor emission and control from 48 site of swine farms. Farm size, wind velocity and atmospheric stability were affected the distance of odor dispersion, showed longer distance in cases of large farm, low wind velocity and stable atmospheric condition. We will suggestion the adjusted distance of odor dispersion according to farm size was estimated to 180 m in small farm and 320 m in large farm when apply the 3 OU, 5 m/s wind velocity and stable atmospheric condition.