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선진 자동차 재제조 산업 분석을 통한 국내 산업에의 시사점 : 교류발전기와 시동전동기를 중심으로
김형주(H. J. Kim),Guenther Seliger,정남훈(N. H. Chung),이한홍(H.H. Lee) 한국정밀공학회 2006 한국정밀공학회 학술발표대회 논문집 Vol.2006 No.5월
Post industrial technologies have improved human standard of living, however, a host of negative environmental consequences from the unlimited industrial appetite have posed serious global challenges. Remanufacturing is an industrial manufacturing process that is to restore old products to perform like a new and to save energy, natural resources, landfill space and to reduce air pollution by less re-smelting. By extending product life cycle, remanufacturing gives us enormous opportunities for sustainable development of our society. This paper introduces current state of the art and future perspective in the field of automotive remanufacturing focusing on alternator and start motor. The results could be used as a basic information for further remanufacturing applications in Korea.
착유우의 혈청내 호르몬수준과 주요경제형질간의 상관에 관한 연구
김형주(H . J . Kim),전진태(J . T . Jeon),홍기창(K . C . Hong) 한국축산학회 1991 한국축산학회지 Vol.33 No.8
The possible use of 3 different hormone levels for selection of some economic traits was examined in 12 lactating Holstein cows. They were divided into two groups of high and low milk yield. The levels of growth hormone(GH). insulin and insulin-like growth factor- I (lGF- I ) were determined in the sera of lactating Holstein cows by radioimmunoassay. There was no difference in the composition of major milk components such as milk fat, protein, lactose, solids-not-fat (SNF) between the high and low yielding group. There was no significant difference between the 2nd and 3rd lactation suggesting that any lactation period may be used for the hormonal analysis. The GH level was higher (p$lt;0.05) in the high yielding group than the low(5.02±0.50 vs 3.05±0.36 ng/㎖). Similar difference was found in the level of IGF-l between the two groups(8.12±0.57 vs 5.73±0.63 n㏖/ℓ, p$lt;0.05). Whereas no significant difference was shown in the level of insulin in the sera of the two groups(25.85±1.93 vs 30.41± 1.96μU/㎖). These results indicate that the levels of GH and IGF-I may be used for the selection of major economic traits in lactating Holstein cows. These approaches could be applied to early selection and selection for other important economic traits in Holstein cows.
장시간 차량 주행 시 저강도 근수축에 의한 운전자의 허리 근육 피로 측정
김동현(D. H. Kim),김성국(S. K. Kim),조영근(Y. K. Cho),고창용(C. Y. Ko),김형주(H. J. Kim),김한성(H. S. Kim) 한국재활복지공학회 2014 한국재활복지공학회 학술대회논문집 Vol.2014 No.11
The aim of this study is measurement of low back muscle fatigue in long term driving. Recently studies show that muscle fatigue using EMG was measured during long-term driving. However results have no correlation between muscle fatigue and back pain. For these reasons, a study measures to muscle characteristic using by MyotonPro. Result shows that Creep and Relaxation was increased at right side of low back, Frequency and Stiffness increased at left side of low back. These results shows that low level contraction evoked by long-term driving would be measured using MyotonPRO.
allyl Trenbolone ( Regumate ) 처리한 미경산돈에서의 수정 및 초기배발생
이상호(S . H . Lee),변태호(T . H . Byun),이중한(J . H . Lee),김형주(H . J . Kim),홍기창(K . C . Hong) 한국축산학회 1992 한국축산학회지 Vol.34 No.5
We examined fertilization and early embryonic development in estrus-synchronized gilt with allyl trenboulone (Regumate) to elucidate any adverse effects on normal development of gametes and early embryos. The ovaries, oviducts and uterine were dissect out at appropriate times, and stored at 4℃ before analysis. The oviducts and uterine were flushed to recover the developing embryos and unfertilized eggs. These eggs were stained with Hoechst 33258 to determine developmental stage accurately. The proportion of gilts with unfertilized eggs were highest in the control group, which may be related to weak estrus. However, lower proportions were found in both Regumate and Regumate + PMS + hCG groups. No differences were found in the rate to fertilization and early embryonic development between control and treated groups, thus suggesting that normal development occurred in the estrus-induced groups. Furthermore, gross appearance and histological examination demonstrated that no evidence of harmful effect was found in the treated groups. It was concluded that Regumate may be safely used to induce estrus synchronization with normal fertilization and early development of embryos.