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      • 자동차용 시로코팬의 유동특성에 관한 연구

        이행남,박길문,이덕구,정한별,김건일,설재림 朝鮮大學校 機械技術硏究所 2005 機械技術硏究 Vol.8 No.1

        The sirocco fan is used to get low noise, and it has been applied to a lot of industry field like the heat engine, the fluid instrument power plant, the food industry, environment industry etc... because there are not problems even it is mixed with a any kind of liquid, gas, and solid. The flow characteristics in sirocco fan are investigated by PIV. The experiment using PIV measurement for Test section's flow characteristics acquired velocity distribution, Condition : when sirocco fan in automobile air controller maximum 1450RPM, and a revolution is a variation (l)950RPM, (2)l100RPM, (3) 1250RPM. The agreement a experiment shows the validity of this study and the results of this study would be useful to the engineers who design for the flow systems

      • 미나리의 성분 특성

        이형재,김용두,정현숙 順天大學校 師範大學 附屬 科學敎育硏究所 1994 科學과 敎育 Vol.2 No.-

        미나리는 독특한 풍미 및 색깔을 지니고 질감과 영양이 뛰어나서 그 이용이 증가되고 있으나, 아직 연구가 미흡한 점을 주시하여 보다 나은 미나리의 활용을 위한 과학적 기초 자료를 얻고자, 미나리의 성분 특성 및 열처리와 냉각방법을 달리하여 ascorbic acid와 시각적 기호도에 영향을 미치는 chlorophyll의 변화를 검토하였는데 그 결과를 요약하면 다음과 같다. 무기성분은 칼륨과 칼슘의 함량이 높았고 줄기보다 잎에서의 함량이 높아 약 1.0-3.4 배의 차이를 나타냈다. 총 아미노산 함량은 줄기와 잎에서 각각 2139.50mg%, 3031.27mg% 였으며 잎의 함량이 줄기보다 1.42배 높았고 총 아미노산에 대한 필수 아미노산의 비율은 줄기가 37.14%, 잎이 37.71%로 나타났다. 확인된 아미노산은 16종이었으며 각 아미노산의 함량은 줄기에서 aspartic acid와 arginine이 주요 구성 아미노산으로 전체의 22.08%를 차지하였고 lysine > histidine > glutamic acid 순으로 함량이 많았으며 잎의 경우는 glutamic acid, arginine이 주요 구성 아미노산으로 18.93%를 나타냈고, aspartic acid > leucine> lysine의 순으로 함유되었으며, 이는 줄기의 주요 아미노산의 함량과 차이를 나타냈다. 줄기와 잎에서 ascorbic acid 함량은 각각 7.60mg%, 8.72mg%였으며 cholrophyll의 함량은 각각 16.33mg/g, 34.83mg/g로 잎부위가 줄기부위보다 높았다. 열처리 방법에 따라서 ascorbic acid 보유율은 microwave 열처리에서 가장 높았고 1000㎖식염수(1%) > 1000㎖ >500㎖ 순이었으며, chlorophyll 보유율은 1000㎖ 식염수 (1%) >microwave > 1000㎖ > 500㎖ 순으로 높았다. 냉각 방법에서도 실온 방치 냉각보다 냉수 냉각이 훨씬 더 높은 ascorbic acid, chlorophyll 보유율을 보였다. The use of the waterdropwort(Oenanthe javanica DC) as both health food and taste food tends to increase, while the researches on it have not been sufficiently made. For the purpose of obtaining the scientific, basic data for the better use of the water dropwort, the present thesis deals with the researches on the changes in the water dropwort : the ascorbic acid and chlorophyll change depending upon the varied heating and cooling methods which influence visual taste. The research results are as follows. The water dropwort contained greater amount of minerals such as K and Ca, and the leaf had 1.0-3.4 times as much content as the stem. The total amino acid content was 2139.50 mg% in the leaf -1.42 times more in the leaf than in the stem. The ratio of essential amino acid to the total amino acid was 37.14% in the stem and 37.71% in the leaf. 16 different kinds of amino acid were detected from the water dropwort. Aspartic acid and arginine were the major amino in the stem, representing 22.08% of the total, and the content was in the order of lysine, histidine, glutamic acid. Glutamic acid and arginine were the major amino acid in the leaf, representing 18.93% of the total, and the content was in the order of aspartic acid, leucine, lysine. The content of ascorbic acid was 7.60 mg% in the stem and 8.72 mg% in the leaf. The content of chlorophyll was 16.33 mg/g in the stem and 34.83 mg/g in the leaf. When the water dropwort was heated, the retention rate of ascorbic acid was the highest in the case of microwave heating method, and the rate was high in the order of 1000㎖(1% NaCl)>1000㎖>500㎖. The retention rate of chlorophyll was high in the order of 1000㎖(1%NaCl)>microwave>1000㎖>500㎖. When the water dropwort was cooled, the retention rate of ascorbic acid and chlorophyll was higher in the cool water cooling than in the room temperature cooling.

      • KCI등재

        증기발생기 전열관 와전류 검사의 신뢰성 향상을 위한 부식결함 시편의 제작 및 활용

        허도행,최명식,이덕현,박중암,한정호 한국비파괴검사학회 2000 한국비파괴검사학회지 Vol.20 No.5

        원전 증기발생기 전열관에 대한 가동중 와전류 검사의 신뢰성을 높이기 위해서는 전열관에서 발생하는 실제와 동일한 부식결함을 제작한 다음 모의과정을 통하여 얻어지는 신호를 해석, 평가하여 장비 및 검사자의 기량을 검증하고 향상시킬 수 있는 기술개발이 이루어져야 한다. 본 논문에서는 가동안전성의 측면, 모의시편의 관점, 인출 전열관의 파괴검사로부터 도출된 관점 그리고 규제기준 및 외국의 사례를 통하여 부식결함을 이용한 증기발생기 전열관에 대한 와전류 검사 신뢰성 향상 연구의 필요성을 고찰하고, 실험실적인 부식결함 제작 모형을 소개하며 그 활용방안을 제시하였다. The development of an integrated technology including fabrication of corrosion defect specimens and their practical use is needed to enhance the reliability of eddy current test for nuclear steam generator tubing. In this paper, the necessity and importance and presented from the viewpoint of the structural integrity, simulation specimens for real defects, and experiences from the destructive examination of pulled tubes. The modes for several corrosion defects are also briefly introduced, with the scheme for their practical use.

      • KCI등재

        보육과 현장중심 교육과정 개발 : DACUM법을 중심으로 Based on the DACUM Method

        김정신,노은호,이행숙,정해은,조희진 한국영유아보육학회 2004 한국영유아보육학 Vol.0 No.36

        The quality of childhood educare teacher is the most important element in evaluation of the quality of childhood educare. However, the current curricula for the childhood educare in colleges are operated individually without a standard curriculum and there are many problems in the certification system of childhood educare teacher. So, it is hard to discuss about the specialty of the childhood educare teachers. Hence, an immediate development of a standard curriculum which fully reflect the needs of the field is necessary to meet the demand of the times and to enhance the quality of childhood educare service by producing qualified teachers. To fulfill the aforementioned needs, the procedure of the DACUM Method which is useful in developing vocational training course is used in this study. And based on the results, a field centered curriculum of the Dept. Child Care and Education is developed by the job analysis of the childhood educare teachers and by collecting the needs of the field. Educare planning and activities, development and evaluation of the educare program, consultation and education of the family, utilization of the regional resources, and after-class guidance of the children were found to be the principal jobs of the childhood educare teachers.

      • 국산 및 수입대두의 발효품질의 변화에 관한 연구

        허윤행,윤정의,채수규,이수한 서울보건대학 1995 서울보건대학 부설 한국보건과학연구소 논문집 Vol.2 No.1

        우수균주로 제조한 코지를 이용하여 대두의 발효에 따른 품질의 특성을 연구하기 위하여 6개 지역에서 수집한 대두와 수입의 것을 시료로 하여 발효경과에 따른 이화학적 분석의 결과는 다음과 같다. 1. 시료(국산) 대두의 화학적 조성에서 조단백질은 40.6∼41.8%(시료1∼3,5,6)이고 조지방은 19.7∼21.3%(시료 1∼3, 5, 6)으로, 시료7(수입대두)의 39%와 19%보다 높았다. 2. 발효 60일의 amino-N는 0.85∼1.19%(시료 1∼3,5,6)와 0.75%(시료 7)으로, 환원당은 16.41∼17.95%(시료 1∼3,5,6)와 16.54%(시료7)로 나타났다. 발효성의 증가는 시료 1∼3, 5, 6 이 시료 7보다 높았고, 시료4(0.71%-15.92%)가 가장 낮았다. 3. 발효 60일에서 국산대두의 아미노산의 함량은 16.51∼20.84g/100g(시료 1∼3, 5, 6)이 16.19g/100g(수입대두의 시료 7)보다 높았고, 시료 4(14.88g/100g)가 가장 낮았다. 4. 60일 발효에서 필수아미노산 함량은 5.76∼4.47g/100g(시료 1∼3, 5, 6)이 4.36g/100g(시료 7)에 비해서 높았고, 시료 4(3.72g/100g), 시료 5(4.34g/100g)이 낮은 수치를 나타냈다. In order to study on the fermentable quality during soybean fermentation with koji made by each three excellent strains which collected from KCCM(Korean Culture Center of Microorganisms) KCTC(Korean Collection For Type Cultures) and Korean soybean and other from imported. The obtained physicochemical result during fermentation with 7 samples for 60days were summerized as follows; 1. For the chemical composition of raw soybean sample the content of crude protein 40.6~41.8%(sample 1∼3, 5, 6) crude fat 19.7~21.3%(sample 1∼3, 5, 6) were higer amount than each other content of 39% and 19% in sample 7, imported. 2. When the fermentation proceeded for 60 days period, the content of amino-N 0.85∼1.19%(S-1∼3, 5, 6) and that is 0.75%(S-7 imported) while reducing sugar content 16.41∼17.95% (S-1∼3, 5. 6) and 16.54%(S-7) amount were higher than that in case of sample 7 and that of sample 4 content(each other 0.71% and 15.92%) was lowest. 3. The content of amino acid for fermentation 60days period, 16.51∼20.84g/100g(S-1∼3. 5, 6) was higher than that 16.19g/100g(S-7) amount and in case of sample 4 (14.88g/100g) was lowest. 4. The content of essential amino acid 5.76∼4.47g/100g(S-1∼3, 6) was higher than 4.36g/100g(S-7) and sample 4(3.72g/100g) and sample 5(4.34g/100g) was lower ammount.

      • 釜山市 主要公園의 野鼠類의 生態에 관한 硏究

        南廷七,朴承範,權相洙,李幸烈 東亞大學校 1987 東亞論叢 Vol.24 No.1

        This experiment was conducted in the three areas of the main park in pusan for four times from March to July, 1987, in order to protect forest injury of field mice. The results were obtained as follow; 1. The species of field mice were Apodemus agrarius coreae, Apodemus speciosus peninsulae, Clethrionomys rufocanus regulue and Crocidura suaveolens shantungensis. 2. Total of 42 field mice collected were composed with 52.4% in Apodemus speciosus peninsulae 30.9% in Crocidura suaveolens shantungensis. 11.9% in Apodemus agrarius coreae, and 4.8% in Clethrionomys regulue. 3. The 42 indivisals of field mice were collected from 1,472 traps. 4. The locational proportions of field mice collected were 1.4%,, 3.8% and 3.5% in Stations, Ⅰ,Ⅱ and Ⅲ, respecrively. 5. Apodemus speciosus peninsulae and Clethrionomys rufocanus regulue was not collected at the station Ⅰ. 6. The body weight ranged from 22 to 39.9g in Apodemus agrarius coreae, from 12 to 45.9g in Apodemus specious peninsulae, from 22 to 33.9g in Clethrionomys rufocanus regulue, It's average weight was 29.8g in Apodemus coreae and Apodemus Speciosus Peninsulae, and 27.8g in Clethrionomys rufocanus regulue, 7. The ratio of female to male of field mice was 0.6 to 0.4 in Apodemus agrarius coreae, 0.41 to 0.59 in Apodemus speciosus peninsulae, and 0.54 to 0.46 in Clethrionomys rufocanus regulue. 8. The average body length of field mice was 97.8mm in Apodemus agrarius coreae, 97.14mm in Apodemus speciosus peninsulae, and 101.5mm in Clethrionomys rufocanus regulue. 9. The average tail length of field mice was 78.2mm in Apodemus agrarius coreae, 95.23mm in Apodemus speciosus peninsulae, 35.0mm in Clethrionomys rufocanus regulue. 10. The average ear length of field mice was 14.3mm in Apodemus agrarius coreae, 15.77mm in Apodemus speciosus peninsulae, 14.0mm in Clethrionomys rufocanus regulue. 11. The breeding period of field mice was between March and July in pusan area. 12. average fetal number of field mice was 3.0 in Apodemus agrarius coreae, 4.8 in Apodemus speciosus peninsulae, and 4.5 in Crocidura suaveolens shantungensis.

      • KCI등재

        물리적 환경인자를 활용한 도시의 쾌적성 평가

        이우성 ( Woo Sung Lee ),곽행구 ( Haeng Goo Gwak ),정성관 ( Sung Gwan Jung ),박경훈 ( Kyung Hun Park ) 한국지리정보학회 2007 한국지리정보학회지 Vol.10 No.1

        본 연구는 도시의 물리적 환경인자를 이용하여 쾌적성을 평가하고, 이를 토대로 대기, 수질 등 환경질과의 상관성을 파악하여 쾌적성 평가결과의 실효성을 검증하고자 한다. 물리적 환경인자는 공원·녹지, 경관, 수환경, 토지이용의 항목으로 분류하고, 11개의 세부인자를 설정하였다. 설정된 인자를 토대로 GIS 도면을 작성한 후, 중첩분석을 이용하여 최종적인 쾌적성 평가도면을 작성하였다. 분석결과를 살펴보면, 1, 2등급은 전체면적의 40.8%로 행정구역상 달성군, 동구, 수성구를 중심으로 나타났으며, 쾌적성이 낮은 6~7등급은 중구, 서구, 달서구 등을 중심으로 전체의 5.7%를 점하고 있었다. 다음으로 실효성 검증을 위해 실시한 쾌적성과 환경오염의 상관분석 결과, 대기의 경우 SO2와 r=-0.649의 상관성을 가졌으며, 수질의 경우 TN, TP와 r=-0.643, -0.642의 높은 음(-)의 상관관계를 가지는 것으로 분석되었다. The purpose of this study is to assess the urban amenity on physical environmental factors, and to verify the effectiveness of the amenity map using correlation analysis of the environmental quality. The physical environmental factors were set to 4 items of green space, landscape, water environment and land use, and the items were composed of 11 detail factors. Based on the factors, GIS maps were constructed and the amenity map was produced using overlay analysis. The results of this study are as follow; the proportion of 1~2 ranks was 40.8% of total area around Dalseong-gun, Dong-gu, Suseong-gu. The lower 6~7 ranks in the amenity assessment was 5.7% of total area around Jung-gu, Seo-gu, Dalseo-gu. According to the results of correlation analysis between the amenity and environmental observed data, SO2 among the air pollution material had a negative correlation with amenity(r=-0.649, p<0.05). In case of water pollution, TN and TP had the negative correlations with amenity (r=-0.643, P<0.01; r=0.642, p<0.01).

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