http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
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.
김한(Hahn Kim),김양식(Yangsik Kim),김장래(Jangrae Kim),김정화(Junghwa Kim),김태형(Tae-Hyeong Kim),김화영(Whayoung Kim),백수현(Soo-Hyun Paik),장옥진(Og-Jin Jang),정현숙(Hyunsuk Jeong),이승엽(Seung-Yup Lee) 한국중독정신의학회 2024 중독정신의학 Vol.28 No.1
Objectives: To determine Korean national priority for research and development planning for drug abuse and substance use disorder treatment. Methods: A Delphi survey methodology was employed, involving 19 experts in the field of addiction. Their potential priorities were assessed based on the size of the problem, urgency, effectiveness, budget size, and feasibility of research execution. Results: After three rounds, the expert consensus was reached for 13 research plans of universal therapeutic agenda and 7 plans for specific drugs. These included developing guidelines for children and adolescents on substance use, a community-based long-term management program, and the development of intervention programs and clinical guidelines for stimulant, cannabis, and opioid use disorders. However, consensus was not reached for research on therapeutic options such as digital therapeutics. Conclusion: This study highlights priority areas for systematic and effective development of treatment programs and research agenda against illicit use of drugs. By integrating insights from multidisciplinary experts, a comprehensive research and development blueprint is proposed to address drug use, which is on the rise and threatening public health and social security in the Republic of Korea.
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.
김다정(Da Jeong Kim),곽효서(Hyo Seo Kwak),성한샘(Han Saem Sung),김재열(Jae Yeol Kim),엄태진(Tae Jin Eom),김철(Chul Kim) 대한기계학회 2018 大韓機械學會論文集A Vol.42 No.9
스윙게이트 밸브는 디젤엔진 선박의 터보 과급기로 유입되는 배기가스를 제어하는 역할을 수행한다. 기존의 밸브는 디스크와 몸체 사이의 간극이 없어 불완전 연소 시 생성되는 불순물로 인해 디스크가 고착되어 원활한 개폐가 어렵고 디스크에 처짐이 발생하여 밸브 개폐 시 몸체에 스크래치가 발생한다. 이에 본 연구에서는 디스크의 고착 방지를 위하여, 밸브가 닫혀 있을 때 현장에서 요구하는 누설 허용량 5% 이내를 만족하는 간극 범위를 결정하였다. 밸브의 전체 두께는 설치공간의 제약으로 인해 고정되어 있으므로 결정된 간극에 따라 플랜지와 몸체의 두께를 설계하였고, 이를 통해 밸브의 경량화를 이루었다. 또한, 디스크의 형상 및 두께 설계를 통해 디스크 처짐으로 인한 스크래치를 저감시켰으며, 상기의 과정을 거쳐 설계된 스윙게이트 밸브에 대하여 진동하중에 따른 구조안전성을 검증하였다. The swing gate valve controls the exhaust gas flowing into the turbocharger installed on the diesel engines of ships. The conventional swing gate valve has no clearance between the disc and the body parts to which the impurities generated during incomplete combustion can adhere. As a result, opening and closing the valve can be difficult. In addition, deflection of the disc causes scratching when the valve is opened or closed. In this study, a clearance within the allowance leakage (5%) has been determined to prevent the valve from sticking to the body parts as the valve closes. The thickness of the body and flange parts were designed according to this calculated clearance, and the design of the disc leads to a reduction in scratch formation. Finally, the structural safety of the proposed model was evaluated under vibration loads.