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윤형식,임훈태,공원식,조재한,성기호,박기문,전창성 한국버섯학회 2010 한국버섯학회지 Vol.8 No.3
This study was performed to determine the optimal concentration of carbon dioxide, which effects mushroom growth and yield. It was shown that the periods for fruiting initiation, growth and harvest of Flammulina velutipes were increased when the CO2 concentration was raised. In general, those characteristics were less affected in brown strains than in white ones. Especially brown strain ASI4103 was susceptible to changes in CO2 concentration. Yields per bottle and individual mushroom weight also decreased in most strains when CO2 levels increased. We were unable to designate any tendency in the number of fruiting bodies due to the large variation within each respective strain. Finally, water contents in the fruiting bodies were found to decline under high CO2 concentrations.
윤형식,권중호 경북대학교 농업과학기술연구소 1985 慶北大農學誌 Vol.3 No.-
저장상 많은 문제점을 내포하고 있는 감자, 양파, 마늘 및 밤의 장기 저장법 개발을 목적으로 수확후 l개월 이내에 Co-60 감마선을 조사하고 냉동기를 가동하지 않은 자연저온 저장고에 각각 저장하였다. 저장중 시료의 발아는 감자가 150Gy, 양파 및 마늘이 50Gy 밤이 250 Gy의 선량으로 8~10개월간 거의 완전히 억제되었다. 감마선 조사에 따라 부패율은 상당히 감소되었으며, 중량감소에 있어서도 적정선량의 조사는 네가지 사료에서 6~24%의 감소 억제 효과를 나타내었다. 발아식품의 품질에 관여하는 성분인 수분, 당 및 비타민 C의 함량은 저장기간의 경과로 비조사구에 비해 조사구가 우수한 경향을 보였다. 따라서 이들 식품의 장기 안전저장을 위해서는 감자, 양파 및 마늘은 50~150 Gy, 밤은 250 Gy 정도의 감마선을 조사하고 자연저온저장고( R.H. 75~85%)에저장하는 것이 효과적인 방법임을 시사하였다. This research was attempted in order to develop a long-term storage method for sprouting foods such as potatoes, onions, garlic and chestnuts using Co-60 gamma irradiation combined with a natural low temperature. The sprouting of the irradiated groups, 150 Gy in potatoes, 50 Gy in onions and garlic, and 250 Gy in chestnuts was almost completely inhibited until 8 to 10 months of storage. The rotting rate of loss of weight influenced a little by irradiation with a sprout inhibiting dose, and the weight of loss of the optimum dose irradiated groups was reduced by about 6 to 24% as against that of the nonirradiated in the four stored foods. The chemical components relating to the quality of sprouting foods were better retained in the irradiated groups than in the nonirradiated until the latter period of storage. Therefore, it was shown that the long term storage of sprouting foods is possible using gamma irradiation of 50 to 150 Gy for potatoes, onions, and garlic and 250Gy for chestnuts followed by storage at a natural low temperature(, R.H. 75-85%).
尹衡植 경북대학교 교육대학원 1979 논문집 Vol.11 No.-
An edible oil (sun flower oil) was used a substrate and in it added respectively tocopherol, citric acid and melanoidin products (a mixed liquid of xylose and L-alanine at each 0.2m which dried after heating for 2 hrs.) at 0.01% and irradiated direct sunlight for 2hrs, every day. In order to compare antioxidation effects which had influence on safty in process of storage of an edible oil, Peroxide, Iodine and Acid value were examined and the following results were obtained; 1) From the beginning, the change of Peroxide, Iodine and Acid value was slowly increased or decreased in control, and after two weeks, was appeared more or less a great change. Antioxidant alone and using together group, in comparision with the above, were not a great change until 20days, but after 20days, antoxidation effects in each group were diminished. 2) In antioxidation and synergistic effects, melanoidin alone group was more effective than tocopherol alone group, and in that used together citric acid with them, melanoidin using together group was more effective than tocopherol using group. The next effective method was a using together group of melanoidin and tocopherol.
윤형식,공원식,이찬중,정종천,전창성 한국버섯학회 2009 한국버섯학회지 Vol.7 No.4
팽이버섯에 대한 효율적인 생산을 위하여 자실체 생육에 영향을 주는 환경인자 는 온도, 습도, 탄산가스 등이 있다. 본 실험에서는 자실체 생육에 탄산가스가 어떤 영향을 주 는가를 확인하기위하여 조절된 재배사에서 재배시험을 수 행하였다. 시험은 팽이버섯 공시균주 8종, 탄산가스 농도는 2000~5000ppm 범위 내에서 각 1000ppm 단위로 조절하 였고, 생육온도는 10℃, 습도는 92%로 조절하여 시험을 수 행하였다. 탄산가스 농도가 증가함에 따라 백색계통의 형태 적 특성 중에서 대길이는 증가되며, 갓크기가 작아진다. 대굵 기는 약간씩 감소하는 경향이며, 갓두께는 별다른 차이를 보 이지 않았다. 갈색계통은 갓크기가 급속이 작아지며, 그 증 에서도 갓크기가 가장 큰 ASI4103 균주가 급격히 감소하였 다. 대길이는 백색계통과는 다르게 어떤 일정한 경향을 보이 지 않았다. 대굵기와 갓두께는 별다른 차이를 보이지 않았다. 팽이버섯 백색계통의 균주들은 갓 경도는 탄산가스 농도의 증가에 따라 증가하는 경향을 보이며, 특히 ASI4166 균주가 급속히 증가하였다. 그러나 대의 경도는 품종에 따라 경향이 다르게 나타나며, 전체적으로 일정한 경향을 보이지 않고 있 다. 팽이버섯 갈색계통의 균주들은 갓 경도는 품종에 따라 약 간의 차이는 있으나 탄산가스 농도의 증가에 따라 증가하는 경향을 보이며, ASI4065균주를 제외한 균주에서는 대경도 도 증가하는 경향을 보이고 있다. 전체적으로 보면 경도와 형 태적 특성의 변화는 품종에 따라 많은 차이를 보이고 있다.
윤형식,권중호 COLLEGE OF AGRICULTURE KYUNGPOOK NATIONAL UNIVERSI 1985 慶北大農學誌 Vol.3 No.-
This research was attempted in order to develop a long-term storage method for sprouting foods such as potatoes, onions, garlic and chestnuts using Co-60 gamma irradiation combined with a natural low temperature. The sprouting of the irradiated groups, 150Gy in potatoes, 50 Gy in onions and garlic, and 250Gy in chestnuts was almost completely inhibited until 8 to 10 months of storage. The rotting rate of loss of weight influenced a little by irradiation with a sprout inhibiting dose, and the weight of loss of the optimum dose irradiated groups was reduced by about 6 to 24% as against that of the nonirradiated in the four stored foods. The chemical components relating to the quality of sprouting foods were better retained in the irradiated groups than in the nonirradiated until the latter period of storage. Therefore, it was shown that the long term storage of sprouting foods is possible using gamma irradiation of 50 to 150 Gy for potatoes, onions, and garlic and 250 Gy for chestnuts followed by storage at a natural low temperature (10 ± 5℃, R.H. 75-85%).
동물 부위에 따르는 수용성유리 Amino 산의 분포에 대한 연구(제1보) : 면양의 근육에 대해서
윤형식,손태화,박원길 한국농화학회 1965 Applied Biological Chemistry (Appl Biol Chem) Vol.6 No.1
The distribution of water soluble free amino acids in various parts of sheep muscles were observed. amino acids of cystine, histidine, aspartic acid, arginine, hydroxy proline, threonine, glutamic acid alanine, proline, methionine, tryptophan, leucine, iso-leucine, glycine, creatine, and two or four different kinds of amino acid content in each tissues, M. longissimus. Overall, the distribution of content of amino acids are seemed to be different for each tissues, while for hydroxyproline the result was negative.
입학전형유형에 따른 전형요소 및 신입생 특성 분석 - 2015학년도 D 대학 입학전형을 중심으로 -
윤형식,강창완 한국자료분석학회 2015 Journal of the Korean Data Analysis Society Vol.17 No.5
For the purpose of simplifying university admissions, various admission types are classified into a school record oriented admission category, a CSAT (college scholastic ability test) oriented admission category, a practical skill oriented admission category, etc. In order to identify the characteristics of each admission type, this study has analyzed the relationship between admission factors and academic achievements by admission type. As a result of the correlation analysis and the multiple regression analysis on the relationship between admission factors and academic achievements by admission type, a meaningful correlation has been identified between the respective admission factors and academic achievements. As a result of the test which have been performed in order to figure out the characteristics of first-year students, compared to other types, the admission based on the comprehensive evaluation of school records has appeared to be relatively high in the areas of academic achievements, adaption to college life, college satisfaction, potential capabilities, etc. In light of the foregoing results, this study is to provide basic information so as to support education for students by way of adjusting the weighed rates or methods of admission factors or considering the characteristics of selected students by admission type. 대입제도는 지속적으로 변화하는 사회적 요구를 반영하여 개선되어 왔다. 최근 성적위주의 획일화된 평가를 탈피하고, 대학의 인재상을 고려하여 학생의 잠재력을 종합적으로 평가하여 학생을 선발할 수 있도록 도입된 입학사정관제도는 사교육비 절감과 공교육정상화를 강조하며 학생부종합전형으로 정착되었으며, 대입전형 간소화를 위해 다양한 전형들을 학생부위주전형, 수능위주전형, 실기위주전형 등으로 유형화하고 있다. 이러한 경향에 따라 개선된 개별 대학의 입학전형은 전형유형별로 반영된 전형요소와 선발된 합격생의 특성을 고려하여 대학의 상황에 맞게 운용되어야 한다. 이에 본 연구에서는 2015학년도 D대학의 전형유형별 특성을 파악하기 위해서 전형유형별 전형요소와 학업성취도의 관계 분석하고, 입학전형별 신입생의 특성을 비교 분석하였다. 전형유형별로 전형요소와 학업성취도와의 관계를 분석하고 상관분석과 중다회귀분석을 실시한 결과 각 전형요소는 학업성취도와 유의한 상관이 있었으며, 전형유형별 신입생의 특성을 파악하기 위해 카이제곱검정과 Kruskal-Wallis H test를 실시한 결과 학생부(종합) 유형이 학업성취도, 학교생활적응도, 학교만족도, 잠재역량 등이 다른 유형에 비해 상대적으로 높게 나타냈다. 이러한 결과를 통해 각 전형별 전형요소의 반영비율 및 반영방법을 조정하거나 전형유형별 합격생의 특성을 고려하여 학생의 교육을 지원할 수 있는 기초 정보를 제공하고자 한다.
오배자(Rhus japonica Linne ) Methanol 추출물의 항산화 효과
윤형식,이기동,김태철 한국식품위생안전성학회 1992 한국식품위생안전성학회지 Vol.7 No.2
Free-, soluble- and insoluble phenolic adds were extracted from defatted Galla Rhois. The extracts were then dissolved in equal amounts of an soybean oil, and POV (peroxide value) of the resulting substrates, portion of the soybean oil (control) and 0.02% BHT were measured by AOM (active oxygen method) test at 97.8℃ for 40 hours through Rancimat method. Induction period of control, BHT, free phenolic acids, soluble phenolic adds end insoluble phenolic adds by the Rancimat method were 4.8, 10.5, 23.9 and 30.5 hr. The phenolic acids separated and tentatively identified by gas chromatography were catechol, Baltic add, vanillin, protocatechuic add, syringic add, ferulic add.