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- 저자 : KIMKI YOUNG (검색결과 4 건)
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김기영(KimKi Young) 한국외식경영학회 1998 외식경영연구 Vol.1 No.1
Today, there are those who say that a knowledge of food production is not needed because so much food is purchased in an almost ready-to-serve state. This is not true. In the first place, most operations still prepare all or almost all of their food from scratch. And, even though a large part of the food is purchased ready-to-serve, a knowledge of food production is still needed to evaluate quality, to do an adequate job of purchasing, handling and serving and to control costs in merchandising the products. Thus, this study attempts to present a knowledge of food production. A knowledge of basic food production will require a set of food production system. This study is presenting the alternatives on the basis of the food production system. Unless appropriate knowledge is used for preparing, combining, processing, holding, and serving food products, inferior products would result. But, this study has some limitations in this respect. Because of being lack of professional knowledge required among managers and studies, the next study having to present something significant about a knowledge of food production is needed.
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최다희,이재철,KIMKI YOUNG 한국섬유공학회 2019 한국섬유공학회지 Vol.56 No.3
In this paper, carbon felt was produced by carbonizing and graphitizing Oxi-PAN fiber (oxidized polyacrylonitrile fiber, stabilized fiber) nonwoven fabric. The physical, mechanical and electrical properties of the carbon felt produced in this way were compared with those of commercialized carbon fiber felt for conventional Redox Flow Battery. As the GSM of Oxi-PAN increased, the porosity and pore size decreased. The GSM after carbonization of the prepared Oxi-PAN felt sample was reduced by about 40%, but the differences according to the carbonization and graphitization temperature conditions showed little change in all the basic characteristics except electrical resistivity and tensile characteristics. The specific resistivity was reduced to 1.25 Ω · mm at 2000 ° C compared to about 2.05 Ω · mm at 1000 ° C based on the Oxi-PAN 900 GSM sample. Compared with commercial products, carbon felt made with Oxi-PAN 900 GSM is considered to be the best electrode.
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탄소나노튜브가 첨가된 탄소섬유 부직포로 강화된 에폭시 복합재료의 전기적, 기계적 특성
최다희,최준,KIMKI YOUNG 한국섬유공학회 2019 한국섬유공학회지 Vol.56 No.4
Carbon nanotube (CNT) materials have excellent mechanical, thermal, and electrical properties that make them interesting for their potential applications in the electronics and aerospace industries. In particular, carbon nanotube paper (CNP)/polymer composites are potential candidates for lightweight multi-functional structural materials with high mechanical performances. CNP can be fabricated by filtering aqueous suspensions of CNT. We confirm that carbon aqueous dispersion can be manufactured using ultrasonication. Our results showed dramatic improvements in electrical conductivity with a percolation threshold ~0.2% of CNT. By significantly improving the dispersion of CNT, we showed that only a very small amount of CNTs were needed to achieve the conductivity levels required for different electrical applications. In addition, we demonstrated that the aqueous dispersion of carbon fiber (CF) could be achieved using an ozone treatment; we also determined that CNT/CF paper could be fabricated by the wet laying of mixed CNT/CF aqueous dispersion as well. CNT/CF papers were embedded in epoxy resin by a resin infusion process to realize CNT/Epoxy composites. We also addressed the electrical conductivity measurements of CNT/CF paper as well as the mechanical properties of the paper and their polymer composites.
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최철영,이준용,김준모,박기호,이은정,Chul Young Choi,Jun Yong Lee,Joon Mo KimKi Ho Park,Eun Jung Rhee 대한안과학회 2008 대한안과학회지 Vol.49 No.12
Purpose: We performed quantitative analysis of aqueous flare to evaluate the influence of diabetes mellitus on the flare values reflecting microvascular injuries of the retina. Methods: We compared aqueous flare values of diabetic patients without diabetic retinopathy (80 patients, 160 eyes), with those of normal control group (21 persons, 42 eyes) and diabetic retinopathy patients (20 patients, 40 eyes). The correlation between flare values and the risk factors of diabetic retinopathy was evaluated in diabetic patients without diabetic retinopathy. Results: Flare values were highest in diabetic retinopathy patients, and higher in diabetic patients without diabetic retinopathy than normal control group with statistical significance (p<0.01). Flare values were not significantly correlated with the risk factors of diabetic retinopathy. Conclusions: Microvascular injury appears to be developed in diabetic patients without diabetic retinopathy.
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