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PCR을 이용한 국내시장에 유통중인 유전자재조합 콩 및 가공식품의 모니터링
김묘영,김재환,김현중,박선희,우건조,김해영 한국응용생명화학회 2003 Applied Biological Chemistry (Appl Biol Chem) Vol.46 No.4
본 연구에서는 PCR을 이용하여 국내시장에 유통중인 원료콩과 가공식품에 epsps 또는 pat 유전자가 삽입된 유전자재조합 콩(GMS)의 사용여부를 모니터링하였다. 이러한 GMS의 검출을 위해 3쌍의 primer set을 제작하였고, 각각의 primer들은 GMS에 삽입된 유전자와 특이적으로 반응하여 PCR산물을 생성하였다. 2001년 표시제가 시행되기 이전에 생산된 총 가공식품과 이후의 제품에 대해 각각 모니터링을 수행하였으며, 표시제 이전에 생산된 제품의 경우 대부분의 미국산 원료에서 esps가 삽입된 GMS가 검출되었으나, 표시제 이후에는 검출되지 않았다. A method using PCR was developed for the monitoring of genetically modified soybean (GMS) and GMS derived foods utilized in the market. We designed 3 pairs of specific oligonucleotide primers based on epsps and pat inserted in GMS and ferritin gene as internal standards. Template DNAs isolated from soybean and processed foods were used for multiplex PCR with 3 primer sets. PCR, used with specific primer sets for GMS detection, showed the amplified DNA fragments with GMS template DNA. In this study, GMS containing epsps was detected from soy processed foods manufactured before GM food labeling system, however, GMS containing epsps or pat was not detected from soy processed foods manufactured after GM food labeling system.
최건영,고성화,김종옥,박은서,김완규,백경동,박동규 순천향대학교 부설 산업기술연구소 2021 순천향 산업기술연구소논문집 Vol.27 No.2
The Internet of Things, the core of the Fourth Industrial Revolution, is growing by incorporating various technologies into various fields. Among them, smart home systems that apply IoT technology to home environments are being actively studied. The home hub market, a means of communication for smart homes, is also developing at the same time. As the home hub market develops, security threats are also increasing accordingly. In this paper, 'Smart Home Mirror' is implemented by combining mirror and IoT technologies so that users can use them to communicate with smart home applications and other devices. To meet security issues, users in it are recognized by using face recognition technology and AES between all data communications in it is applied. The proposed device’s usefulness is approved by implementing it in smart home environments.
여수국가산업단지 인근 지역 대기오염물질 농도에 영향을 미치는 요인분석
김민영,변정훈,이영훈,이건영,한지은,이예림,임지현,장봉기 순천향대학교 기초과학연구소 2022 순천향자연과학연구 논문집 Vol.28 No.1,2
Eight monitoring stations in the Yeosu National Industrial Complex will determine the concentration of air pollutants measured every hour in 2019, analyze what factors affect them, and how they correlate with the air pollutant measurements. Six air pollutants (SO2, NO2, O3, CO, PM-10 and PM-2.5) measured at eight monitoring stations around Yeosu National Industrial Complex (Seogang-dong, Wolnae-dong, Munsu-dong, Yeocheon-dong, Deokchung-dong, Hwayang-myeon, Yulchon-myeon, Samil-dong) the measurement data for each hour of the year were downloaded to analyze the concentration by weather condition, time zone, season, separation distance from Yeosu Industrial Complex, and separation distance from Gwangyang Industrial Complex. SO2, NO2, and CO concentrations were significantly higher in winter, significantly lower in summer, and O3, PM-10, and PM-2.5 concentrations were significantly higher in spring. SO2, CO, PM-10, and PM-2.5 concentrations were significantly higher between 10 a.m. and 12 p.m., NO2 concentrations were significantly higher between 7 a.m. and 9 a.m., and O3 concentrations were significantly higher between 13 p.m. and 15 p.m.(p<0.001). The concentration of air pollutants (SO2, NO2, CO, PM-10, PM-2.5) excluding O3 was found to have a negative (-) correlation with weather condition, and in the case of O3, it was found to have a positive (+) correlation with PM-10, PM-2.5, temperature and wind speed. It was confirmed that the concentration of air pollutants emitted from the Yeosu National Industrial Complex differs depending on the season, time and distance to the industrial complex. This study aims to establish measures to minimize health damage to residents living relatively close to the industrial complex and contribute to the establishment of management and response measures according to the properties of substances to reduce the concentration of air pollutants in the future.
Kim, Yeong-Jung,Yu, Yeong-Seon,Gang, Geum-Chun,Baek, Lee,Yun, Jin-Ha,Lee, Geon-Jung 한국농업기계학회 2001 바이오시스템공학 Vol.26 No.3
This study was conducted in order to develop wind-water heating system where frictional heat is creased between the rotor and working fluid when they are rotating in the cylindrical heat generator. The wind-water heating system is composed of rotor, stator, working fluid, motor, inverter and heat generation tank. Instead of wind turbine, we have used an electrical motor of 30㎾ to rotate the rotor in this system. Two working fluids and six levels of rotor rpm were tested to quantify heat amounts generated by the system. Generally, as motor rpm goes up heat amount increases that we have expected. At the same rpm, viscous fluid showed up better performance than the water, generating more heat by 10$\^{C}$ difference. The greatest heat amount of 31,500kJ/h was obtained when the system constantly drained out the hot water of at the flow rate of 500ℓ/h. Power consumption rate of the motor was measured by thee phase electric power meter where the largest power consumption rate was 14㎾ when motor rpm was 600 and gained heat was 31,500kJ/h, that indicated total thermal efficiency of the wind power water heating system was 62%.
( Yeong Geon Kim ),( Kwang Jae Lee ) 대한내과학회 2014 대한내과학회 추계학술발표논문집 Vol.2014 No.1
Background: Impedance baseline measurements can be used to evaluate changes in the integrity of the esophageal mucosa, and baseline impedance is found to be correlated with transepithelial resistance. The aim of this study was to investigate factors infl uencing on esophageal baseline impedance levels in patients with suspected symptoms of GERD. Methods: Consecutive endoscopy-negative patients with suspected symptoms of GERD (heartburn, chest pain, and/or globus) who underwent 24h esophageal multichannel intraluminal impedance-pH (MII-pH) monitoring were eligible for inclusion in this study. Patients were excluded if they were taking medication which could infl uence esophageal motor function or gastric acid secretion, or if they had erosive esophagitis on endoscopy, or a history of upper gastrointestinal surgery. Baseline impedance values in each individual were measured in the proximal esophagus and the distal esophagus at 5 min before meal, 5 min, 30 min after meal, 30 min before sleep, 30 min, 60 min after sleep. Each single baseline value represents the average value of a 30-s time period around each time point avoiding swallows, refl uxes, and pH drops. Results: Fifty patients were included in the study. Baseline impedance levels at 5 min after meal were signifi cantly lower in the proximal (p<0.001) and distal esophagus (p<0.001), compared with those at 5 min before meal. Signifi cantly lower baseline impedance levels were observed at 30 min (p<0005) and 60 min (p<0.005) after sleep in the proximal esophagus, compared with those at 30 min before sleep, but not in the distal esophagus. Baseline impedance levels in patients with pathological acid refl ux (n=12) and pathological bolus refl ux (n=15) were signifi cantly lower in the distal esophagus. Conclusions: Meal ingestion, sleep, pathological acid reflux and pathological bolus refl ux appear to infl uence on esophageal baseline impedance levels.
Wnt/β-catenin signaling activator restores hair regeneration suppressed by diabetes mellitus
( Yeong Chan Ryu ),( You-rin Kim ),( Jiyeon Park ),( Sehee Choi ),( Geon-uk Kim ),( Eunhwan Kim ),( Yumi Hwang ),( Heejene Kim ),( Soon Sun Bak ),( Jin Eun Lee ),( Young Kwan Sung ),( Gyoonhee Han ),( 생화학분자생물학회 2022 BMB Reports Vol.55 No.11
Diabetes mellitus is one of the most prevalent diseases in modern society. Many complicationssuch as hepatic cirrhosis, neuropathy, cardiac infarction, and so on are associated with diabetes. Although a relationship between diabetes and hair loss has been recently reported, the treatment of diabetic hair loss by Wnt/β-catenin activators has not been achieved yet. In this study, we found that the depilation-induced anagen phase was delayed in both db/db mice and high-fat diet (HFD) and streptozotocin (STZ)-induced diabetic mice. In diabetic mice, both hair regrowth and wound-induced hair follicle neogenesis (WIHN) were reduced because of suppression of Wnt/β- catenin signaling and decreased proliferation of hair follicle cells. We identified that KY19382, a small molecule that activates Wnt/β-catenin signaling, restored the capabilities of regrowth and WIHN in diabetic mice. The Wnt/β-catenin signaling activator also increased the length of the human hair follicle which was decreased under high glucose culture conditions. Overall, the diabetic condition reduced both hair regrowth and regeneration with suppression of the Wnt/β-catenin signaling pathway. Consequently, the usage of Wnt/β-catenin signaling activators could be a potential strategy to treat diabetes-induced alopecia patients. [BMB Reports 2022; 55(11): 559-564]
사중편심 버터플라이 밸브의 구조 안전성 및 유량계수에 관한 수치해석적 연구
김건호 ( Geon-ho Kim ),차종국 ( Jong-kook Cha ),김규철 ( Gyu-cheol Kim ),정대영 ( Dae-yeong Jeong ),이봉희 ( Bong-hee Lee ) 한국산업융합학회 2022 한국산업융합학회 논문집 Vol.25 No.2
Butterfly valves installed on ships use valves with up to triple offset to improve tightness. However, the triple offset valve has structural problems such as disc deformation and seat separation. Accordingly, interest in quadruple offset butterfly valves with added offset is increasing. In this study, the structural safety of the quadruple offset butterfly valve was examined through numerical analysis. In addition, we intend to evaluate the performance of the valve through flow coefficient analysis.
P2G 기술 연계형 풍력발전 기반 독립형 마이크로그리드 최적 운영 방안
손영건(Yeong-Geon Son),황성욱(Sung-Wook Hwang),이학주(Hak-Ju Lee),김성열(Sung-Yul Kim),김동섭(Dong-Sub Kim) 대한전기학회 2021 전기학회논문지 Vol.70 No.11
The purpose of this study is to optimize the operation of wind power generation-based standalone microgrid linking P2G technology. Renewable energy sources, such as wind turbine, photovoltaic, etc., use natural energy as a power source, so the system operator could not control the power of the renewable energy sources. Failure may occur and damage such as power failure may occur if the facilities of the RES that cannot be controlled output increase and the balance of power supply and demand in the power system is not matched. In this study, insufficient power is supplemented by power supply using diesel generator, and excess power is supplemented by Battery Energy Storage System (BESS) and Power-to-Gas (P2G) technologies. In particular, P2G technology using hydrogen energy is mainly dealt with, and multi-objective optimization programming that satisfies both objective functions is interpreted based on pareto-front optimization by deriving the power limit of wind power generators and system costs incurred when building and operating microgrids.