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乘用車 點火시스템의 EMR 特性에 關한 實驗的 硏究(Ⅱ)
박종남(J.N.Park),박진용(J.Y.Park),이준서(J.S.Lee),한경(K. Han),장우종(W.J.Jang),차경옥(K.O.Cha) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.6_2
The ignition system of any sparked-ignited internal combustion engine-powered device is well recognized as a major sources of radiated electromagnetic interference(EMI). Measurements of the electromagnetic noise radiated by automotive ignition systems were made at 150 ㎑ ~ 1 ㎓. With the widespread use of various electrical applicances in daily life, there has been an increase in unnecessary radiated electromagnetic waves influencing many spheres of social life. In addition to the radiation of unnecessary electromagnetic waves by electrical machinery, considerable noise arises from ignition systems of internal combustion engine. Automotive ignition noise is due to fast rise-time(impulsive) currents that flow in the vehicle's wiring. The three major sources of impulses are the breakdown in the distributor of the gap between the rotor and the posts, the breakdown of the spark plug gap, and the closure of the breaker points. Each of these sources can be threated individually to suppress the ignition noise.<br/>
승용차 점화시스템의 EMR 특성에 관한 연구(1); 측정과 해석
박종남(J.N.Park),이준서(J.S.Lee),성현수(H.S.Sung),신승현(S.H.Shin),차경옥(K.O.Cha) 한국자동차공학회 1995 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1995 No.11_2
The ignition system of any sparked-ignited internal combustion engine-powered device is well recognized as a major sources of radiated electromagnetic interference (EMI). Measurements of the electromagnetic noise radiated by automotive ignition systems were made at 150 KHZ ∼ 1 GHZ. With the widespread use of various electrical applicances in daily life, there has been an increase in unnecessary radiated electromagnetic waves influencing many spheres of social life. In addition to the radiation of unnecessary electromagnetic waves by electrical machinery, considerable noise arises from ignition systems of internal combustion engine. Automotive ignition noise is due to fast rise-time(impulsive) currents that flow in the vehicle's wiring. The three major sources of impulses are the breakdown in the distributor of the gap between the rotor and the posts. the breakdown of the spark plug gap, and the closure of the breaker points. Each of these sources can be threated individually to suppress the ignition noise.<br/> <br/> <br/>
신선편이 적채의 active MA 포장을 위한 최적의 가스농도 및 포장재
박종남 ( J. N. Park ),경장현 ( J. H. Kyoung ),정천순 ( C. S. Jeong ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2011 강원 농업생명환경연구 Vol.23 No.1
This study was carried out to determine the optimum gas ratio and packaging films for active modified atmosphere(MA) packaging of cut red cabbage. O2 and CO2 contents in the active MA treatments were not almost changed during storage period regardless of the packaging films, but CO2 content in air treatment was increased with decreasing O2 content. Acetaldehyde and ethanol contents in 10:0 and air treatments packaged with 50㎛ film were lower than those of the other treatments. Hunter ``b`value, an indicator of yellowing, was lower in 10:0 and 20:0 treatments than that of the air treatment and ascorbic acid content was higher in active MA treatments than that of the air treatment regardless of packaging films. Weight loss in active MA treatments was somewhat higher than that of the air treatment, but marketability loss did not occurred by weight loss. From the result of overall quality test, marketability of cut red cabbage stored at 4℃ seemed to be maintained effectively until 9 days in 10:0 treatment packaged with 50㎛ film.