http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
치성상피종양으로부터 상악에 발생한 치성유령세포암종의 치험례
김진학(Jin-Hak Kim),김문기(Moon-Key Kim),차인호(In-Ho Cha),김진(Jin Kim),김현실(Hyun-Sil Kim),최희수(Hee-Soo Choi),김형준(Hyung-Jun Kim) 대한구강악안면외과학회 2004 대한구강악안면외과학회지 Vol.30 No.3
The neoplastic variant of calcifying odontogenic cyst has various designation, and its malignant counterpart has been reported as aggressive epithelial ghost cell tumor or odontogenic ghost cell carcinoma. Odontogenic ghost cell carcinoma(OGCC) is a rare carcinoma first documented in 1985. It is composed of varying sized islands of anucleated cells with homogenous, pale eosinophilic cytoplasm, so called ghost cells, were admixed with nucleated cells. We report a case of maxillary OGCC developed from odontogenic epithelial tumor in a 25-year-old man with literature review.
꽈배기 모자반 물 추출물의 항산화능과 물리적 특성에 대한 감마선 조사의 영향
김아람(Ah-Ram Kim),송유진(Eu-Jin Song),김미정(Mi-Jung Kim),이소영(So-Young Lee),김꽃봉우리(Koth-Bong-Woo-Ri Kim),김진희(Jin-Hee Kim),김서진(Seo-Jin Kim),홍용기(Yong-Ki Hong),박진규(Jin-Gyu Park),김재훈(Jae-Hun Kim),이주운(Ju-Woon Lee) 한국식품영양과학회 2008 한국식품영양과학회지 Vol.37 No.3
본 연구에서는 꽈배기모자반 물 추출물에 식품산업에서 사용이 확대되고 있는 감마선 조사기술을 이용하여 항산화능의 변화를 알아보고, 꽈배기모자반 물 추출물의 높은 점성과 짙은 색상으로 인한 문제점을 개선하고자 하였다. 꽈배기모자반 물 추출물의 감마선 조사에 따른 항산화능의 변화를 알아보기 위해 총 페놀화합물 함량을 측정하고 DPPH radical 소거능을 측정하였다. 그 결과, 3~20 kGy의 감마선을 조사한 꽈배기모자반 물 추출물은 조사선량이 증가할수록 총 페놀화합물 함량이 증가하였고, DPPH radical 소거능도 증가하여 감마선 조사에 의해 항산화능이 증진되었다. 그리고 꽈배기모자반 물 추출물에 감마선 조사 시 물리적 특성 변화를 알아보기 위해 색상과 점도를 측정한 결과, 감마선 조사선량이 증가할수록 색이 옅어지고 점성이 감소하는 것으로 나타났다. 이를 통해 꽈배기모자반 물 추출물에 감마선을 조사한 후 식품에 적용 시 가공특성을 개선시킬 수 있을 것으로 사료된다. 따라서 감마선 조사는 꽈배기모자반 물 추출물의 물리적 특성을 개선시키고 항산화능 또한 증진시키므로 식품산업에 적용 시 기존의 천연 항산화제의 단점을 개선시킬 수 있는 기술로서 사용이 확대될 수 있을 것으로 사료된다. In this study, the antioxidant properties and physical characteristics of irradiated Sargassum siliquastrum water extract were evaluated. Samples were irradiated with Co<SUP>60</SUP> γ-ray at doses ranging from 3 to 20 kGy. They were then analyzed to investigate antioxidant properties, including total phenolic compound content and DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging activity. In addition, physical properties such as viscosity and color were evaluated. The results demonstrated that total phenolic compound content and DPPH radical scavenging activity were significantly improved (p<0.05) by irradiation. In terms of physical properties, viscosity and color were reduced in the irradiated extracts as compared to non-irradiated samples. In conclusion, gamma irradiation improved the antioxidant properties of Sargassum siliquastrum water extract, improving its original weak point as a natural antioxidant when applied in the food industry.
김의(Eui Kim),김혜민(Hye Min Kim),배경진(Kyung Jin Bae),권오경(Oh Kyung Kwon),조홍현(Hong Hyun Cho) 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.6
In this study, a solution heat exchanger, which is one of the components of a LiBr-H₂O absorption heat pump, was selected as a 60° chevron angle brazing type plate heat exchanger, and its performance was experimentally measured under low-temperature operating conditions. The low-temperature side mass flow rate of the solution heat exchanger was fixed at 350 kg/h, and the high-temperature side mass flow rate was varied from 150 kg/h to 750 kg/h. LiBr-H₂O concentrations were set to 56% and 53% in the high-temperature and low-temperature solutions, respectively. As a result of the experiment, the heat transfer rate, differential pressure, and figure of merit were compared according to the change in the mass flow rate on the high temperature side. As the mass flow rate on the high temperature side increased, the heat transfer rate increased and the differential pressure increased significantly. In future studies, the figure of merit was indicated as an index for the selection of the optimal solution heat exchanger.