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강원도 화천군 수달(Lutra lutra) 서식지의 식생 구조
서형수 ( Hyung Soo Seo ),신영섭 ( Young Seob Shin ),이경은 ( Kyung Eun Lee ),김윤미 ( Yoon Mi Kim ),전미나 ( Mina Jeon ),남택우 ( Taek Woo Nam ),한성용 ( Sung Yong Han ),정연숙 ( Yeonsook Choung ) 한국하천호수학회 2014 생태와 환경 Vol.47 No.special
In order to determine whether vegetation would be one of the factors for the selection of otter home range, vegetation structure and other potential factors were studied in Hwacheon, Korea. Thirteen sites, otter’s activity found and not found, were investigated in North Han River and connected tributary streams of Hwacheon-gun. Three types of vegetation were classified by cluster analysis, which is short grass, tall grass and shrub type. Vegetation zone of each channel is composed of either one type, or mosaic of tall grass and shrub type. Short grass type is common in Lake Paro and upper North Han-river where water level is highly variable throughout a year. Therefore, annual species such as Persicaria nodosa, Fimbristylis dichotomam and Chenopodium ficifolium are the most dominant. Shrub type is common at the downstream sites of Jichon stream and along mainstream of North Han River down Lake Paro. A shrub species, Salix koreensis, is the most common. Tall grass type is dominant occupying the most vegetation zone of the tributary channels. Phragmites japonica is absolutely dominant. Due to its dense cover, a few plant species are co-existed. Otter activity was found in all three vegetation types and no marked activity was found at some sites of tall grass type. There is no difference in species composition and physiognomy between tall grass sites with and without otter activity, while it shows significant difference in fish availability between two groups. Overall we found that home range of otters in the region is along the mainstream and downstream of tributary streams with high fish availability in all vegetation types and in various human activity levels.
화학기상응축 공정으로 제조한 Fe 나노입자의 TEM 미세조직 및 결정화거동
김택수,이희정,오익현,한재길,최철진,이병택 대한금속재료학회 2003 대한금속·재료학회지 Vol.41 No.12
Iron and iron nitride nanoparticles were synthesized by chemical vapor condensation (CVC) process, using a precursor of Fe(CO)_(5) and carrier gas of NH₃. Phase change and crystallization behaviors of as received particles were mainly examined by TEM technique. Only α-Fe nanoparticles were formed at the lowest decomposition temperature of 500℃. As the temperature increased, the crystallization of α-Fe nanoparticles was suppressed and Fe₃N nanoparticles were begun to be formed. Finally full crystallization of Fe₃N was observed at 1000℃. Typical size of the α-Fe and Fe₃N particles was less than 30 nm in diameter.
사회과 탐구논리에 따른 수업방법이 사고력 신장에 미치는 효과에 관한 연구
김영우,나한택 서원대학교 교육연구소 1998 敎育發展 Vol.1998 No.17
It is the primary purpose of this study that the inquiry teaching is more effective to attatin higher learning achievement and improve thinking ability than the traditional teaching. In order to solve the suggested issues, two kinds of instruction plans are made - the inquiry teaching and traditional teaching. For experimental lessons, 80 girl students of a middle school located at Eum-Sung Country in Chung-buk Province were divided into groups: the experimental group and the compared one. Now it is conclued that inquiry teaching is more effective to attain a higher learning achievement and improve thinking ability than the traditional teaching. Thus, this study is worthwile to reach the objectives of social studies instruction for making the good democratic citizens who have thinking ability.
팩시밀리의 主機板에 對한 技能的 試驗機의 設計 및 具現
김신택,이재훈,김명선,김한상,민형복 成均館大學校 科學技術硏究所 1992 論文集 Vol.43 No.2
본 연구는 팩시밀리의 주기판(main board)을 기능적으로 테스트하기 위해 구현한 FFTS(Functional Facsimile Test System)에 대한 기술이다. 본 연구의 목적은, 테스트시 수반되는 모든 작업을 자동화하고, 테스트 수행중 발생하는 여러가지 상태들을 자료화하는 것이다. 아울러 주기판에 대한 입출력 신호들의 종류와 그 특성들이 변경될 경우라도 소프트웨어의 수정만으로 그 것에 대처한 후 계속적으로 테스트를 수행할 수 있도록 한다. FFTS는 주기판에 접속되는 여러가지 장치들을 하드웨어적으로 에물레이션하며, 테스트용 전용언어, 그리고 그것에 대한 컴파일러를 포함한다. FFTS로 테스트를 수행하는 방법에는 대화식 모드(IAT)와 대화식 테스트에서 수행할 수 있는 모든 과정을 테스트용 언어로 저장한 후 그것을 반복하여 사용하는 배치 모드(Batch mode) 등이 있다. FFTS의 유용성을 실증하기 위해 여러 종류의 팩시밀리에 대하여 실험을 실시하였다. FFTS (Functional Facsimile Test System) is designed and implemented. It is possible to eliminate repeated test work and to analyze the data obtained through test. If the specification of the signals from/to main board of facsmile is changed, it is possible to cope with the change by modification of FFTS software. FFTS emulates the devices connected to the main board. FFTS is designed to test the main board either by using interactive(IAT) mode with graphic user interface or by using noninteractive(NIAT) mode with test command file which is coded manually or created from IAT mode. The operation of the FITS is verified for several types of main board of G3 class facsmiles.
金漢烈,金仁澤 明知大學校 産業技術硏究所 2003 産業技術硏究所論文集 Vol.22 No.-
Abstract - This paper presents a method for detecting skin tumors on chicken carcasses using multi-spectrum image. It utilizes both fluorescence and reflectance image information in multi-spectrum images. A detection system that is built on this concept can increase detection rate and reduce processing time, because the procedure for detection can be simplified. Chicken carcasses are examined first using band radio FCM information of fluorescence image and it results in candidate regions for skin tumor. Next classifier selects the real tumor spots using PCA components information of reflectance image from the candidate regions. For the real world application, real-time processing is a key issue in implementation and the proposed method can accommodate the requirement by using a limited number of features to maintain the low computational complexity. Nevertheless, it shows favorable results and, in addition, uncovers meaningful spectral bands for detecting tumors using multi-spectrum image. The method and findings can be employed in implementing customized chicken tumor detection systems.
황종택,강한철,김태수,박원종 한국식품영양학회 1999 韓國食品營養學會誌 Vol.12 No.2
포도씨의 조지방질 함량을 분석한 결과 조지방질 함량은 평균 28.6%이었고, Steuben 품종이 32.0%로 가장 높았다. 지방산 조성은 리놀레인산 70.75%, 올레산 18.48%, 스테아르산 2.01%, 팔미트산 8.45%로 구성되어 있었으며 Jingyu 품종에서 스테아르산이 적었고, Fugiminori 품종은 올레산이 많았다. 중성지방질의 평균함량은 87.25%, 당지방질은 4.68%, 인지방질은 8.06%로 구성되었다. 조단백질 평균함량은 11.2%로 품종간의 차이를 나타냈으며, Neo muscat이 15.7%로 가장 높은 함량을 나타냈다. 총당은 2.35∼5.63㎍/㎎이었고 환원당 평균함량은 3.20㎍/㎎을 나타냈다. 포도씨 조지방질의 평균 검화가는 186.3㎎·KOH/g·oil이었고 Kyoho 품종이 230으로 가장 높았다. 포도씨 기름의 항산화력이 참깨보다 우수하여 DPPH 환원 능력은 평균 27%가 높았다. 그러나 180℃로 가열한 후의 포도씨와 참깨씨 조지방질들은 비슷한 산패도를 나타냈다. The possibility of grape seeds as industrial resources was tested by analyzing various chemical properties of their oils from seven different species. The range of crude oil content of the grape seeds was 26.0-32.0%, showing the highest content in Steuden. Mean individual fatty acid contents in the grape seeds were lioleic (70.75%), oleic (18.48%), stearic (2.01%), and palmitic (8.45%) acids. Stearic acid was low in Jingyu, and high oleic acid was found in Fugiminori, compared with other grape strains. Total lipids were consisted of nutral lipid (87.25%), glycolipid (4.68%), and phospholipid (8.06%). Content of crude proteins was approximatery 11.2% with some variation between strains. Total sugar content was 2.35∼5.63㎍/㎎ with reducing sugar 3.20㎍/㎎. Mean saponification value of crude oils was 186.3㎎·KOH·oil. Antioxidant activity of grape seed oils was better than that of sesame oil, resulting in the higher activity of reducing DPPH by 27%. Peroxide values, however, were similar between grape seed oils and sesame oil after heat treatment at 180℃.
Gas-Liquid Chromatography를 이용한 사과 및 배 중의 농약 다성분 잔류분석법
박주황,김택겸,오창환,김정한,이영득,김장억 한국환경농학회 2004 한국환경농학회지 Vol.23 No.3
사과 및 배 시료에서 농약 다성분의 gas chromatography를 이용한 잔류분석법 확립을 위하여 199가지의 농약를 선정 하여 retention time 및 검출기에 따라 ECD 5 그룹 및 NPD 5 그룹의 10개 그룹으로 분류하였다. 시료의 종류에 따른 분석조건을 확립하기 위한 회수율 시험은 농약들의 log P_(ow) 값과 화학적 분류에 따라 총 18개 (ECD 11개, NPD 7개)의 농약을 선정하였다. 예비실험 후 확립된 분석방법에 따라 10개 그룹의 혼합 표준용액으로 사과 및 배에 대한 회수율시험을 행하였다. 그 결과, 총 196가지의 농약의 70%에 해당하는 사과에서 136개, 배에서 133개의 농약들에서 회수율 70에서 120%의 양호한 결과를 나타내었다. 그러나 사과에서 43개, 배에서 45개의 농약들이 70% 미만의 회수율을 보였고, fenvalerate는 120% 이상의 회수율을 나타내었으며, 사과에서 17개 및 배에서 18개의 농약들은 검출이 되지 않았다. 그러나 확립된 분석법은 SOP에 의한 신속하고 수월한 수행으로 농산물 중의 잔류농약을 검출 및 모니터링하는 목적에 적합하다고 사료된다. A rapid analytical method was developed to determine multiple pesticide residues in apples and pears using gas-liquid chromatography (GLC). The samples were extracted with water-miscible solvents and purified by cleanup procedures serially comprising liquid-liquid partition and solid-phase extraction (SPE). Each analyte was separated and determined by a high-resolution GLC equipped with electron-capture detector (ECD) and nitrogen-phosphorous detector (NPD). A total of 196 pesticides, which were previously classified into 5 groups each for ECD and NPD based on their retention behaviors on the capillary column and responses to the detector, were subjected to the recovery experiment. In compliance with the analytical criteria, 70 to 120% of recovery and less than 20% relative standard deviation, the proposed method could be successfully applied to analyze 136 and 133 pesticide residues in apples and pears, respectively, which enabled not only rapid screening but quantitation of the residues. Even though less reliability was resulted from unacceptable recovery range, rest of pesticides including 43 and 45 analytes in apples and pears, could be also detected for their identity. The proposed method, failed to cover 17 and 18 pesticides for apples and pears, which mostly showed high polarity or heat-lability but, could be suitable for fast surveilance or monitoring of fruit harvests.
농업인 평생학습체계 구축을 위한 농업인교육 발전방안 연구
정철영,송병국,김진모,문택석,허영준,주대진,최수정,한승완 한국농업교육학회 2008 농업교육과 인적자원개발 Vol.40 No.2
이 연구의 목적은 우리나라 농업인의 평생학습체계 구축을 위한 농촌진흥기관의 역할을 정립하고, 한국농업대학의 농업인대학 운영 본부화 방안을 수립하는데 있다. 이를 위해 관련 문헌고찰, 농업인 및 농촌진흥기관의 농업인 교육 담당자들의 인식 및 요구분석, 전문가 자문 및 협의회 등의 방법을 활용하였으며, 이를 토대로 도출된 연구의 결과를 제시하면 다음과 같다. 첫째, 농촌진흥기관의 농업인교육관련 연계를 위해서는 한국농업대학이 농업인평생교육기관으로 평가인정을 받고, 전국의 농업인대학을 총체적으로 지원하는 역할을 수행하는 것이 바람직하다. 이때 지역의 농업기술센터는 한국농업대학과 협력적 관계를 구축하여 학점은행제 운영에 소요되는 교육 및 이력관리를 지원하는 역할을 수행하는 것이 필요하다. 둘째, 한국농업대학의 농업인대학 운영본부화를 위하여 평생학습원의 조직이 추가되는 것이 바람직하다. 이에 따라 평생학습원의 비전, 미션 및 전략이 제시되었으며, 조직의 기능 및 세부과제가 제시되었다. 셋째, 농업인교육의 학점은행제를 도입을 위한 체계를 설정한 후, 농업관련 기존 표준교육과정 분석, 농업인 요구분석, 전국 농업인대학 교육과정 분석, 기존 농업관련 전공 교육과정 분석, 전문가 검토 등의 과정을 거쳐서 '영농 전문학사'와 '농업 경영 학사'의 표준교육과정을 개발하였다. 넷째, 고졸미만 농업인을 위한 사전학습제도화를 위하여 농업인교육의 평가인정을 통한 방안과 One-Stop 평생학습모델을 통한 방안을 제시하였다. The purposes of this research were to assign the role of rural development organizations, and to establish the strategy for the making headquarter of farmer's university. The study was performed as follows: (1) analyzing the related literatures, documents, records review, (2) need analysis of farmers and members ig rural development organizations in terms of farmer's lifelong learning, (3) consulting experts. The following four findings are the results of this study: (1) Korean national agricultural college should be headquarter of farmer's universities and be approve for lifelong learning credit. Also, agricultural technology & extension centers should run educational program for the lifelong learning credit. (2) For the doing role of headquarter of farmer's university, division of lifelong learning should be add to department of technology training in Korea agricultural college. In relation with this, vision, mission and strategy of division of lifelong learning were suggested. (3) Steps for introduction of credit bank system of farmer education were suggested. Also standard curriculums of 'farming associate degree' and 'agricultural management bachelor's degree' were developed through analyzing existing standard curriculum related with agriculture, analyzing need of farmer, analyzing curriculum of farmer's university, analyzing curriculum of agriculture major. (4) For farmer who do not have high school graduate, two solutions were suggested which are approving farmer's education and one-stop lifelong learning model.
Kim, Kook Hwan,Jeong, Yeon Taek,Oh, Hyunhee,Kim, Seong Hun,Cho, Jae Min,Kim, Yo-Na,Kim, Su Sung,Kim, Do Hoon,Hur, Kyu Yeon,Kim, Hyoung Kyu,Ko, TaeHee,Han, Jin,Kim, Hong Lim,Kim, Jin,Back, Sung Hoon,Ko Nature Publishing Group, a division of Macmillan P 2013 Nature medicine Vol.19 No.1
Despite growing interest and a recent surge in papers, the role of autophagy in glucose and lipid metabolism is unclear. We produced mice with skeletal muscle–specific deletion of Atg7 (encoding autophagy-related 7). Unexpectedly, these mice showed decreased fat mass and were protected from diet-induced obesity and insulin resistance; this phenotype was accompanied by increased fatty acid oxidation and browning of white adipose tissue (WAT) owing to induction of fibroblast growth factor 21 (Fgf21). Mitochondrial dysfunction induced by autophagy deficiency increased Fgf21 expression through induction of Atf4, a master regulator of the integrated stress response. Mitochondrial respiratory chain inhibitors also induced Fgf21 in an Atf4-dependent manner. We also observed induction of Fgf21, resistance to diet-induced obesity and amelioration of insulin resistance in mice with autophagy deficiency in the liver, another insulin target tissue. These findings suggest that autophagy deficiency and subsequent mitochondrial dysfunction promote Fgf21 expression, a hormone we consequently term a 'mitokine', and together these processes promote protection from diet-induced obesity and insulin resistance.