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2단 간헐폭기 시스템에서 aeration cycle이 질소 및 인 제거에 미치는 영향
정명선,이준호,서광범,김영관 강원대학교 산업기술연구소 2003 産業技術硏究 Vol.23 No.A
This bench-scale research investigated the aeration cycle(on/off) as the controlling factors for nitrogen and phosphorus removal in a 2-stage. intermittent aeration process. At this experiment, the aeration cycle time(air-on/air-off) was 30min/30min. 60min/60min, 90min/90min. Organic matter removal was obserred more than 90% regardless of the aeration cycle and phosphorus removal was relatively high when the aeration cycle time was 60min/60min On the other hand. For all of the aeration cycle, TN removal was appeared less than 53% This result was probably due to the limitation of the external substrate for heterotrophic nitrification and aerobic denitrification
2단 간헐폭기 시스템에서 aeration cycle이 질소 및 인 제거에 미치는 영향
정명선,이준호,서광범,김영관 江原大學校 附設 環境硏究所 2003 環境硏究 Vol.20 No.-
This bench-scale research investigated the aeration cycle(on/off) as the controlling factors for nitrogen and phosphorus removal in a 2-stage, intermittent aeration process. At this experiment, the aeration cycle time(air-on/air-offJ was 30min/30min, 60min/60min, 90min/90min. Organic matter removal was observed more than 90% regardless of the aeration cycle and phosphorus removal was relatively high when the aeration cycle time was 60min/GOmin. On the other hand, For all of the aeration cycle, TN removal was appeared less than 55%. This result was probably due to the limitation of the external substrate for heterotrophic nitrification and aerobic denitrification.
노영태,서국웅,김명철,박승범 부산대학교 체육과학연구소 2000 體育科學硏究所 論文集 Vol.16 No.-
This study analyzed subjects of this study are one high school player, one business team player, and one national team player. M. deltoideus, M. trapezius, M pectoralis major, M. latissimus in upper part of the body muscles, M. flexor carpi radialis, M. brachioradialis, M. bireps brachii, M. triceps brachii upper arms muscles to analyzed work load, muscle activity of change in time they play with inverted cross of rings. The conclusions of this study are as follows. 1. The order of high work load in upper body muscle is as follows: M. deltoideus 41.00%, M. trapezius 36.67%, M. pectoralis 12.33%, M. latissimus 10.00%. 2. The order of high work load in upper arms muscles is as follows: M. biceps brachii 56.67%, M. brachioradialis 21.00%. M flexor carpi radialis 17.67%, M. triceps brachii 5.33%. 3. In the analysis of muscle activity by time phase when they stopped inverted cross of rings, M. deltoindeus, M. biceps brachii showed high muscle activity, so I found that they are the main muscular system.
초음파법을 이용한 콘크리트 역타시공 이음부 공극의 화상검출특성
박석균,백운찬,이한범,김명모 한국비파괴검사학회 2000 한국비파괴검사학회지 Vol.20 No.4
최근 역타시공법 등에 의한 콘크리트 구조물의 시공이 증가 추세에 있다. 이 경우, 자주 발생되는 신ㆍ구타설 콘크리트 시공이음부의 공극은 향후 구조물의 구조적인 특성과 내구성 등에 큰 영향을 미치게 된다. 그러나 현재 제안되고 있는 비파괴 검사법으로는 효과적으로 이음부 공극을 평가하기에 많은 한계가 있다. 본 연구에서는 시공이음부의 콘크리트 충전상태를 평가하기 위해 철골철근 콘크리트와 무근 콘크리트 시험체내에 공극을 모의제작한 후, 초음파속도 측정을 실시하고, 화상처리기법을 이용하여 비교적 용이하게 해석 가능한 방법에 대해 검토하였다.
Outcome of Multipair Donor Kidney Exchange by a Web-Based Algorithm
Kim, Beom Seok,Kim, Yu Seun,Kim, Soon Il,Kim, Myoung Soo,Lee, Ho Yung,Kim, Yong-Lim,Kim, Chan Duck,Yang, Chul Woo,Choi, Bum Soon,Han, Duck Jong,Kim, Yon Su,Kim, Sung Joo,Oh, Ha-Young,Kim, Dae Joong American Society of Nephrology 2007 Journal of the American Society of Nephrology Vol.18 No.3
<P>Donor kidney exchange is an established method to overcome incompatibility of donor-recipient pairs (DRP). A computerized algorithm was devised to exchange donor kidney and was tested in a multicenter setting. The algorithm was made according to the consensus of participating centers. It makes all possible exchange combinations not only between two incompatible DRP but also circularly among three DRP and selects an optimum set of exchange combinations, considering several factors that can affect the outcome of the exchanged transplant. The algorithm was implemented as a web-based program, and matching was performed five times. Fifty-three DRP were enrolled from five transplant centers. The numbers of DRP that were enrolled in each matching were 38 (25:13), 39 (34:5), 33 (31:2), 32 (28:4), and 34 (30:4) (carryover:newcomer). The numbers of generated exchange combinations were 4:11, 3:17, 2:12, 2:3, and 2:3 (two-pair exchange:three-pair exchange), and the numbers of DRP in selected exchange combinations were six, 12, six, five, and four in each matching. The numbers of DRP with blood type O recipient or AB donor were five and one, respectively, in selected exchange combinations. Six DRP of two-pair exchange combinations and six DRP of three-pair exchange combinations underwent transplantation successfully. Computerized algorithm of donor kidney exchange was tried not only between two incompatible DRP but also circularly among three DRP. It showed that the algorithm has potential to improve the outcome of donor kidney exchange, especially for disadvantaged DRP with blood type O recipients or AB donors.</P>