http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
사과 品種別 Vitamine C의 含量에 關한 調査 硏究
朴相眩,姜君中 진주산업대학교 1980 論文集 Vol.18 No.-
各 品種別 사과의 Vitamin C의 含量, pH의 수준 및 당도의 차이를 알아 보기 위해서 본 시험을 실시하였으며 그 結果를 요약하면 다음과 같다. 各 品種別 Vitamin C 含量의 범위는 4.9㎎/100g의 수준이었다. 인도(pH5)와 홍옥(pH3.6)을 제외한 대부분의 品種의 酸度는 pH4 정도로서 거의 비슷하였다. 各 品種別 糖度의 範圍는 9.9에서 14.1이었다. 紅玉은 全體의 品種 中에서 酸度와 糖度는 가장 낮았으나 Vitamin C의 含量은 가장 높은 品種인 것으로 나타났다. This experiment was carried out to investigate the amount of ascorbic acid, pH levels and sugar contents in different varieties of apple produced in Keoung Sang Buk province, and the results were as follows; The ascorbic acid contents of different varieties of apple ranged from 4.9㎎/100g to 9.8㎎/100g. The pH values were similar in all varieties examined except Indo (pH5) and Hongok (pH 3.4). The sugar contents of the different varieties of apple ranged from 9.9 to 14.1. The variety of Hongok had the highest ascorbic acid contents and the lowest sugar contents in all varieties.
화학 용액 증착 공정으로 제조된 후막 Pb(Zr_(0.52), Ti_(0.48))O₃의 e_(31,f) 특성
박준식,양성준,강성군,나경환 대한금속재료학회 2003 대한금속·재료학회지 Vol.41 No.9
Thick Pb(Zr_(0.52), Ti_(0.48))O₃(briefly, PZT) films are required for the cases of micro actuators and sensors with high driving force, high breakdown voltage and high sensitivity, and so on. In this work, thick PZT films were fabricated by chemical solution deposition process. Total 16 types of samples using thick PZT films with thicknesses, about 1 ㎛ and 2 ㎛, and Pt top electrodes shapes for measuring effective transverse piezoelectric coefficients (e_(31,f)) were prepared using MEMS processes. All samples were characterized by fabricated e_(31,f) measurement system before and after poling process at 125 kV/cm and 150℃ for 10 min. |e_(31,f)| values of samples after poling were higher than samples before poling. Those of 2 ㎛ thick PZT films were also higher than 1 ㎛ thick PZT films. We found that |e_(31,f)| was directly related with {111} to {h00} crystal structures of thick PZT films. And those with narrow electrodes (x₁- x_(0)) as top Pt electrodes were also higher than cases with wide top Pt electrodes in agreement with given equation.
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)
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.
SO2 가스에 의한 철 - 규소합금의 고온황화부식에 미치는 탄소의 영향
강성군,정헌달 한국부식학회 1989 Corrosion Science and Technology Vol.18 No.1
The high temperature sulfidation reaction of Fe-Swt% Si alloys containing 0.5, 0.7, 1.0, 1.7wt% C was investigated in 1 atm SO₂ gas pressure at temperature ranging from 650℃ to 800℃. The sulfidation rate of the alloys was determined by thermogravimetric analysis. The structure and the composition of the reaction products were identified by the aid of SEM, EDS, AES analysis and X-ray diffraction technique. The scales formed on the alloy surface consisted of two types of layers: the outer Layers (FeO, Fe₃O₄, Fe₂O₃) and the inner layers (FeS, SiO₂). The overall reaction process obeyed a parabolic rate law over the temperature range 650-800℃, in which the reaction rate increased with increasing in the temperature. The activation energies for the sulfidation reaction of Fe-5Si, Fe-5Si-0.7C and Fe-5Si-1.7C were 41.2, 59.3, 96.6 KJ/mol, respectively. The addition of carbon in the Fe-Si alloy retarded the sulfidation reaction by forming the dense outer oxide layer and the thick inner SiO₂ layer. However, the influence of the carbon on the sulfidation rate was not remarkable above 800℃.
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.