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Cu 배선 확산 방지용 전해 Ni-Re-P 합금 피막의 열적 안정성
강성군 ( Sung Goon Kang ),조진기 ( Jin Ki Cho ),김문태 ( Moon Tae Kim ) 대한금속재료학회 ( 구 대한금속학회 ) 2007 대한금속·재료학회지 Vol.45 No.5
Using electrodeposition, the influence of Re on thermal stability of Ni-P films was studied. Ni-P and Ni-Re-P films were electrodeposited on Cu plates in a sulfamate bath respectively. Electrodeposition was carried out at 1A/dm2 and the film`s thickness was 170nm. The concentration of P and Re in the films was analyzed by WDXRF(Wave Dispersive X-ray Fluorescence Spectrometers) and the concentration was 6wt.% and 10wt.% respectively. DSC(Differential Scanning Calorimetry) and XRD(X-ray diffraction) showed that the crystallization temperature of Ni-Re-P films was 76℃ higher than that of Ni-P films. The results indicated that the thermal stability of Ni-Re-P films was superior to that of Ni-P films.
Analysis of Nuclear Power Plant Load Follow Operation by Temperature Reduction Method
Park, Sang-Yoon,Park, Goon-Cherl,Lee, Un-Cherl,Kang, Chang-Sun,Kim, Chang-Hyo,Chung, Chang-Hyun Korean Nuclear Society 1986 Nuclear Engineering and Technology Vol.18 No.3
The inlet coolant temperature reduction technique has been used to extend the load follow operation further in the end-of-cycle-life(EOL). In order to simulate the technique and calculate the nuclear characteristics of a PWR core according to the load follow operation, the three dimensional computing system has been established. The analysis was performed in both MINB and SPINR modes of typical 12-3-6-3 locad follow operation for the EOL of KNU-1 plant. Moreover, the capability of return-to-power has been also tested for those two modes with the system analysis by the RETRAN-02 code. The results show that it has no difficulty to extend the load follow operation further in the EOL by applying the inlet coolant temprature reduction, and also the spinning reserve capacity(SRC) increases by 13% in MINB mode and 14% in SPINR mode Bore that used by control rods only, for 14$^{\circ}$ F drop in the inlet temperature.
모틸린에 의한 사람 위 평활근의 수축 기전에 관한 연구
심상군(Sang Goon Shim),이종철(Jong Chul Rhee),이풍렬(Poong Lyul Rhee),최규완(Kyoo Wan Choi),전성국(Sung Kook Jeon),강동묵(Tong Mook Kang),엄대용(Dae Yong Uhm),이종석(Jong Seok Lee),성인경(In Kyung Sung),김현서(Hyun Seo Kim) 대한소화기학회 2002 대한소화기학회지 Vol.39 No.1
Background/Aims: Motilin is an intestinal peptide that stimulates the contraction of gut smooth muscle. A discrepancy exists between the in vivo (neurally mediated) and in vitro (direct action on a smooth muscle receptor) mechanisms of motilin action in many species. We investigated in vitro mechanisms of motilin action on human gastric smooth muscle. Methods: Antral cirular muscle strips of the surgical tissue obtained during gastrectomy, were used to measure contractile force and electrical activity. Dispersed muscle cells were used to measure L-type Ca2+ current and electrical activity. Results: Motilin of 1-100nM contracted smooth muscle in a concentration-dependent manner. Motilin-induced contractions were unaffected by tetrodotoxin or atropine treatment. Nifedipine or Ca2+-free bath solution blocked motilin (10nM)-induced contractions. Low concentration of motilin (1nM) resulted in an increase in acetylcholine (0.1~100M)-induced contractions. By patch clamp recording technique, motilin (1 or 10nM) did not modify the L-type Ca2+ current, but motilin-induced membrane depolarization was detected. Erythromycin also contracted smooth muscle with membrane depolarization but verapamil inhibited the contraction. Conclusions: These results suggest that motilin contracts smooth muscle through a direct action on smooth muscle receptor and Ca2+ influx through the L-type Ca2+ channel, which is due to membrane depolarization, also mediates motilin-induced contractions. (Korean J Gastroenterol 2002;39:4-12)
Dae-Goon Yoo,Min-Chul Kim,Min-Kyung Park,송재민,Fu-Shi Quan,Kyoung-Mi Park,Young Keol Cho,Sang-Moo Kang 한국식품영양과학회 2012 Journal of medicinal food Vol.15 No.10
Ginseng has been used in humans for thousands of years and is known to have multiple biological and immunomodulatory effects. In this study, we investigated whether Korean red ginseng extract would have preventive and antiviral effects on influenza virus infection. Oral administration to mice of red ginseng extract prior to infection significantly increased survival after infection with the 2009 pandemic H1N1 virus. Daily oral treatment of vaccinated mice with red ginseng extract provided enhanced cross-protection against antigenically distinct H1N1 and H3N2 influenza viruses. Naive mice that were infected with virus mixed with red ginseng extract showed significantly enhanced protection, lower levels of lung viral titers and interleukin-6, but higher levels of interferon-γ compared with control mice having virus infections without red ginseng extract, indicating an antiviral effect of ginseng. In addition, ginseng extract exhibited inhibitory effects on the growth of influenza virus in vitro. This study provides evidence that intake of ginseng extract will have beneficial effects on preventing lethal infection with newly emerging influenza viruses.
들깨유와 고추 종자유의 혼합 급이가 흰쥐의 혈청 및 혈소판 지방산 조성에 미치는 영향
강정옥(Jeong-Ock Kang),김성희(Sung-Hee Kim),김한수(Han-Soo Kim),김군자(Goon-Ja Kim),최운정(Woon-Jung Choi),정승용(Seung-Yong Chung) 한국식품영양과학회 1992 한국식품영양과학회지 Vol.21 No.2
α-linolenic acid를 약 60%함유하는 들깨유와 linoleic acid를 약 64% 함유하는 고추종자유를 비율별로 흰쥐에게 혼합급이하였을 때 혈청 및 혈소판에 미치는 지방산 조성에 관하여 분석 검토한 바, 혈청 지질의 총 지방산 조성은 SFA가 30.6%~34.9% 범위로 각 실험군간에 큰 차이가 없었으며, MUFA는 14.4%~17.0% 범위이며, PUFA는 48.0%~43.0% 범위로 총지방산의 약 50%를 차지하였다. 혈청중 인지질, 중성지질 및 콜레스테롤 에스테르의 다불포화지방산 조성중 C_(18:2)(ω-6)는 콜레스테롤 에스테르 성분에서 인지질, 중성지질 성분보다 함유비율이 약간 많았고, C_(20:4)(ω-6)는 각 성분간의 함량 차이는 크지 않았고, 각 성분에 있어 C_(18:2)(ω-6)나 C_(20:4)(ω-6) 모두 시험유지의 ω-3PUFA/ω-6PUFA 비율이 낮아질수록 증가되는 경향을 나타내었다. C_(18:3)(ω-3)은 각 지질성분 모두 C_(20:4)(ω-3) 및 C_(20:5) (ω-3)보다 함유 비율이 높았다. 혈소판의 지방산 조성은 SFA는 2군(7.5% 들깨유+12.5% 고추종자유), 3군(5.0% 들깨유 + 5.0% 고추종자유)에서 낮았고, 5군(10.0% 고추종자유)에서 가장 높았으며 MUFA는 3군이 가장 높고 5군이 가장 낮았다. 한편, PUFA는 2군에서 가장 낮았고 EPA / AA 비는 2군이 가장 높았으며 5군에서 가장 낮았다. This study aims at revealing the effects of the feeding mixed ω-3 perilla oil and ω-6 red pepper oil on fatty acid compositions of serum and platelet in rats. The diet administered to the male rats of Sprague - Dawley was composed of the perilla oil containing about 60% ω-3 linolenic acid as well as the red pepper oil with roughly 64% of ω-6 linoleic acid. In the total fatty acid composition of serum lipid, SFA had no great significance among the groups, while MUFA ranged from 14.4% to 17.0% and PUFA stood from 48.0% to 53.0%. PUFA compositions of phospholipid, triglyceride and cholesteryl ester fractions, C_(18:2) (ω-6) was the highest in cholesteryl ester than the other components. In platelet's fatty acid composition, SFA were low in groups 2 (7.5% perilla oil + 2.5% red pepper oil) and 3 (5.0% perilla oil +5.0% red pepper oil), and the highest in group 5 (10% red pepper oil). MUFA stood the highest in group 3 and the lowest in group 5, while PUFA was the lowest in group 2. Ratio of EPA / AA was the highest in group 2, but group 5 was the lowest.