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정원철,김영일,손호영,김석,이후장 한국식품위생안전성학회 2008 한국식품위생안전성학회지 Vol.23 No.4
Choline is important an organic compound for normal membrane function, acetylcholine synthesis, lipid transport, and methyl metabolism. In biological tissues and foods, there are multiple choline compounds that contribute to choline content. Many researches suggest that memory and intelligence are improved by the supplement of choline. Recently, according to the effects of choline for memory, choline has been added to milk. In this study, the content of choline was analyzed the commercial whole milks and flavored milks by enzymatic method. The standard curve was linear with 0.00316 slope and 0.994 correlation coefficient. Recoveries varied between 89.8 and 97.6%. Contents of choline in whole milks and flavored milks were 14.56-15.19 and 4.11-11.50 mg/100g, respectively. The results of this study may be usable for the establishment of choline adequate intake for Korean. Choline is important an organic compound for normal membrane function, acetylcholine synthesis, lipid transport, and methyl metabolism. In biological tissues and foods, there are multiple choline compounds that contribute to choline content. Many researches suggest that memory and intelligence are improved by the supplement of choline. Recently, according to the effects of choline for memory, choline has been added to milk. In this study, the content of choline was analyzed the commercial whole milks and flavored milks by enzymatic method. The standard curve was linear with 0.00316 slope and 0.994 correlation coefficient. Recoveries varied between 89.8 and 97.6%. Contents of choline in whole milks and flavored milks were 14.56-15.19 and 4.11-11.50 mg/100g, respectively. The results of this study may be usable for the establishment of choline adequate intake for Korean.
정원철,차춘남,이후장 한국환경보건학회 2009 한국환경보건학회지 Vol.35 No.5
The present study was undertaken to estimate the antibacterial effect of Mume Fructus water extract (MFWE) against murine salmonellosis. At MFWE concentrations ranging from 25 to 100 ㎍/㎖, the antibacterial effect was not showed on Salmonella typhimurium (S. typhimurium). On the other hand, bacteria without MFWE had a tendency to proliferate up to 8 h after incubation. Oral administration of MFWE at the dose of 40 ㎎/㎖ showed a therapeutic effect for S. typhimurium infected BALB/c mice. The mortality of MFWE-treated mice was 80% at 12 days, while that of MFWE-untreated mice was 100% at 9 days after a lethal dose of S. typhimurium infection. The results of our study strongly indicate that MFWE has potential as an effective of salmonellosis.
재가정신분열병 환자의 인구사회적 특성에 따른 서비스욕구에 관한 연구
정원철 신라대학교 사회과학연구소 2004 사회과학연구 Vol.- No.7
This paper was to study on service needs of home reside schizophrenia. The author researched 185 schizophrenia about their service needs in accordance to their sociodemographic factors. The results as follows: 1. It was appeared that schizophrenia preferred to services related in community adjustment. 2. Schizophrenia's service needs appeared differently in accordance to their sociodemographic factors. 3. As schizophrenia's service needs appeared differently according to their characteristics, it is desirable that mental health services toward home reside schizophrenia should based on their sociodemographic factors. 4. Case management may powerful alternative for the purpose of fulfilling various service needs of home reside schizophrenia
다중 스월 인젝터 가스터빈 연소기의 유동 특성 해석 및 화염 구조 분석 LES
정원철,성홍계 한국항공우주학회 2014 한국항공우주학회 학술발표회 논문집 Vol.2014 No.4
스월 인젝터를 이용한 환형 가스터빈 연소기의 반응/비반응시 난류 유동 특성을 연구하기 위하여 3차원 Large Eddy Simulation(LES)을 적용하였다. 연소에 의한 온도 증가는 유체의 점성을 증가시켜 반응 유동에서 발생된 와류가 비반응 유동보다 크게 형성되는 것을 확인 할 수 있었다. 또한 연소실내 압력 진동은 연소실의 반경/접선 방향으로 강하게 나타나는 것을 확인할 수 있었다. 결과적으로 인젝터 사이의 상호간섭에 의해 복잡하고 강한 압력파가 연소실 내에 전파됨을 확인하였다. Reacting and non-reacting turbulent flow fields of an annular gas turbine combustor with swirl injectors have been investigated by a 3D Large Eddy Simulation(LES). The larger vortex structure of reacting flow have been observed than non-reacting flow due to the temperature increased by combustion. The enormous pressure is oscillating along the tangential and radial direction in the annular combustor. The interactions of adjacent injectors enhance the oscillatory pressure waves more complexly and strongly propagated through the combustor, which was not recognized in single injector simulation.
정원철,박선숙 한국교류분석상담학회 2014 교류분석상담연구 Vol.4 No.2
본 연구는 사회복지실천 장면에서 상담의 중요성에 의해 그 실천적 대안으로서 사회복지상담 의 정체성, 사회복지실천과 상담 간의 연관성을 밝히고 사회복지상담의 발전과제를 제시한 연 구이다. 이를 위하여 첫째, 사회사업과 임상사회사업, 사회복지실천에서의 상담에 대하여 이론 적 배경을 탐색하였다. 둘째, 사회복지상담의 개념과 특성 및 사회복지상담과 심리상담의 구 별, 사회복지상담의 기술을 고찰하였다. 셋째, 사회복지상담의 발전과제를 제시하였다. 사회복 지상담은 사회복지실천 장면에서 사회복지사가 사회복지실천의 가치에 토대하여 개인과 가족, 집단을 대상으로 제반의 상담이론과 기법을 적용함으로써 내담자의 사회적 기능을 향상시키 고자 하는 일정기간의 원조관계로 정의하였다. 사회복지상담의 발전을 위한 과제로는 사회복 지상담 교육의 확대와 사회복지기관의 심리상담 업무를 강화하고 상담전문가로서의 정체성 확보의 노력과 사회복지사의 유능성 확보에 사회복지상담을 적극 활용할 것 등을 제시하였다