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海松林의 林分形狀高에 依한 林分材積表 調製에 關한 硏究 : 麗川 地域을 中心으로
徐丁源 건국대학교 1994 대학원 학술논문집 Vol.39 No.-
The purpose of this study is to develop the method of stand volume estimation by stand form height(H.F). The required data were obtained from 50 sample plots of plot size 0.05ha in black pine(Pinus thunbergii PARL.) stand which were located in Chon-nam and related factors were measured actually. The results obtained are summarized as follows; 1.For establishing the stand volume table, estimated regression equation in induced from the relation between D.B.H and H.F, Volume and H.F respectively and correlation coefficient, standard error of residual, F-value, and R-square were, as a SAS (Statistical Analysis System) program, calculated. 2.In the relationship between D.B.H and H.F best fit equation obtained from the form of 1/H.F=0.0536+1.6569×1/D.B.H. 3.In the relationship between H.F and Volume best fit equation obtained from the form of in V=―1.8926+3.4559×In H.F. 4.Significant difference between actual volume and estimated volume was not shown, and estimated error calculated with the application of these stand volume table is 13.348% for black pine.
효소고정화막과 반투막성질의 PVA적층막 제조 및 산소센서에서의 특성
서종원,김태진,정용섭,윤정원 경북대학교 센서기술연구소 1998 센서技術學術大會論文集 Vol.9 No.1
The oxygen electrode of biosensor needs enzyme immobilized membrane and dialysis membrane for measurement of oxygen concentration, which in solution after enzyme reaction with its substrate. The one-layer PVA laminated CTA/PCL membrane was developed for oxygen electrode of biosensor. Enzymes have immobilized on cellulose triacetate/polycarprolactone membrane by CDI method, and laminated with polyvinyl alcohol, aldehyde and acid. This membrane immobilized with glucose oxidase, ascorbate oxidase, pyruvate oxidase and alcohol oxidase by CDI mehod, and PVA laminated CTA/PCL membrane have been tested with various concentration of substrates of enzymes by use of YSI oxygen sensor. Under 5-10mmol substrates become 0.37-0.83μA(r=0.995) currents, and about 56% of glucose oxidase activity was remained after 8 weeks, others were remained very low. SEM shows smooth surface and tightly attached PVA on enzyme immobilized CTA/PCL membrane.
이남순,임중기,류병태,류서홍,원정희 成均館大學校 1980 論文集 Vol.27 No.-
2-Alkoxy-4-acetamidobenzthioamide was synthesized by reaction of hydrogen sulfide with 2-alkoxy-4-acetamidobenzonitrile which was dehydrated from 2-alkoxy-4-acetamidobenzamide by thionyl chloride or phosphorus pentoxide. 2-Alkoxy-4-acetamidobenzthioamide was obtained by hydrolysis of 2-Alkoxy-4-acetamidobenzthioamide with 10% hydrochloric acid solution.
면접조사를 통한 초등학생의 영양교육 실태 및 실천도 조사
오유진,이영미,김정현,안홍석,김정원,박혜련,서정숙,김경원,권오란,박혜경,이은주,성현이 대한지역사회영양학회 2008 대한지역사회영양학회지 Vol.13 No.4
This study investigated the experience and practice of elementary school students on nutrition education. The data were collected from 217 male and female students attending 5-6th grade elementary schools in Seoul and Kyunggi-Do from March to June 2007, interviewing face to face by a nutrition teacher and 3 interns of a nutrition teacher. The results were as follows: 86.5% of the subjects learned about ‘Table etiquette’, ‘Reasons for eating fruits and vegetables’ (78.7%), ‘Food waste and environment’ (72.3%), ‘Healthy snacks’ (55.7%), ‘Food sanitation’ (52.3%), ‘Food culture of foreign countries’ (48.1%). Nutrition education experience was significantly different by gender. A total of 43.5% boys responded that they never learned about ‘basic food preperation’ (p < 0.01). They had learned ‘Nutrients for body’ and ‘Food waste and environment’ in school, ‘Healthy weight loss’, ‘Food culture of foreign countries’, ‘Food circulation’ on television, Most content (‘Table etiquette’, ‘Simple cooking’, ‘Food sanitati n’, ‘Eating behaviors for health’, ‘Reasons for eating fruits and vegetables’, ‘Healthy snacks’) was learned from parents. The practice after nutrition education was higher in ‘Table etiquette’ (2.14), ‘Eating fruits and vegetables’ (2.07) than others compared with education experience. The most reason of non-practice on nutrition information was ‘Troublesome’. In ‘Nutrients for body’, a boy answered ‘Difficult for practice’ 20.0%, a girl answered ‘Difficult to understand’ 32.6%, showing a significant difference between the gender groups (p < 0.001). They remembered the ‘Nutrients for body’ (49.6%), ‘Food sanitation’ (44.5%) because of ‘important content’,‘Basic food preparation’ (40.6%), ‘Food culture of foreign countries’ (36.3%) because of ‘interesting content’, ‘Healthy weight loss’ (52.0%), ‘Eating behavior for health’ (44.5%) and ‘Healthy snacks’ (33.7%) because of ‘need for my health’.