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분무 열분해 CVD법으로 이동 중인 LaAlO_3(100) 단결정 위에 증착시킨 YBCO 박막의 특성
김재근,홍석관,김호진,유석구,조한우,안지현,주진호,이희균,홍계원,Kim, Jae-Gun,Hong, Suk-Kwan,Kim, Ho-Jin,Yu, Seok-Koo,Cho, Han-Woo,Ahn, Jin-Hyun,Joo, Jin-Hoo,Lee, Hee-Gyoun,Hong, Gye-Won 한국초전도학회 2006 Progress in superconductivity Vol.8 No.1
YBCO films were deposited on a moving substrate by a spray pyrolysis method using nitrate aqueous solution as precursors. Deposition was made on $LaAlO_3$(100) single crystal substrate by spraying precursor droplets generated by a concentric nozzle. The cation ratio of precursor solution was Y:Ba:Cu=1:2.65:4.5. The distance between nozzle and substrate was 15 cm. Substrate was transported with a speed ranging from 0.23 cm/min to 0.5 cm/min. Films were deposited at the pressure ranging from 10 Torr to 20 Torr and the deposition temperature was ranged from $740^{\circ}C\;to\;790^{\circ}C$. Oxygen partial pressure was controlled between 1 Tow and S Torr. Superconducting YBCO films were obtained from $740^{\circ}C\;to\;790^{\circ}C$ with an oxygen partial pressure of 3 Torr. Scanning electron microscope(SEM) and X-ray diffraction(XRD) observation revealed that films are smooth and highly texture with(001) plans parallel to substrate plane. Highest Jc was 0.72 $MA/cm^2$ at 77K and self-field for the film with a thickness of 0.15 m prepared at a substrate temperature of $740^{\circ}C$ and $PO_2$=3 Torr.
질산염 무기금속 화합물의 분무열분해법에 의한 High-$J_c$ YBCO 박막 제조
홍석관,김재근,김호진,조한우,유석구,안지현,주진호,이희균,홍계원,Hong, Suk-Kwan,Kim, Jae-Gun,Kim, Ho-Jin,Cho, Han-Woo,Yu, Seok-Koo,Ahn, Jin-Hyun,Joo, Jin-Hoo,Lee, Hee-Gyoun,Hong, Gye-Won 한국초전도학회 2006 Progress in superconductivity Vol.8 No.1
High $J_c$ over 1 $MA/cm^2$ YBCO film has been successfully prepared using nitrate precursors by spray pyrolysis method. Aerosol drolpets generated using a concentric spray nozzle were directly sprayed on a $LaAlO_3$(100) single crystal substrate. The cation ratio of precursor solution was Y:Ba:Cu=1:2.65:1.35. The distance between nozzle and substrate was 15 cm. Deposition temperature was ranging from $750^{\circ}C\;to\;800^{\circ}C$. Deposition pressure was 100 Torr, and oxygen partial pressure was varied from 10 Torr to 50 Torr. The microstructure, phase formation, texture development and superconducting properties of deposited films were largely changed with oxygen partial pressure. Deposited films showed a texture with(001) planes parallel to substrate plane. High quality film was obtained when film was deposited at $760^{\circ}C$ with an oxygen partial pressure of 30 Torr. The critical current density($J_c$) of the YBCO film was 1.75 $MA/cm^2$ at 77 K and self-field.
지역사회기반의 재활체육 지원체계에 관한 독일과 일본 비교연구
서해정(Hae jung Suh),조재훈(Jae hoon Cho),김재근(Je gun Kim) 한국장애인재활협회 2017 재활복지 Vol.21 No.3
본 연구의 목적은 독일과 일본의 재활체육 서비스 지원체계를 분석하여 한국에 적용 가능한 지역사회 기반의 장애인 건강권 확보를 위한 재활체육 서비스 지원방안을 제시하는 것이다. 이 연구를 위해 문헌 검토 및 일본을 직접 방문조사하여 재활체육의 운영 배경 및 발전 상황, 개념 및 범위, 대상, 서비스 전달과정, 제공기관, 제공인력 그리고 재원 등에 대한 내용분석을 하였고, 이를 근거로 우리나라에 정책적 시사점을 다음과 같이 제안하였다. 첫째, 재활체육의 개념과 범주가 점차 확대되고 있다. 독일과 일본은 처음에는 의료적 재활을 목적으로 상이군인 등을 대상으로 재활체육이 시작되었으나 시간이 지날수록 재활체육의 중요성이 강조되면서 장애를 예방하거나 장애로 인한 2차 질병을 예방하는 차원으로 대상자들이 점차 확대되고 있다. 둘째, 재활체육이 실시되기 위해서는 의료, 복지, 장애, 운동처방 등의 전문지식을 가지고 있는 인력이 필수적이며 독일과 일본에서는 이들을 전문적으로 양성하고 있다. 셋째, 독일과 일본에서는 재활체육 제공기관을 특별히 한정짓고 있지 않고 제공기관에 재활체육을 지도할 지도자가 배치되어 있는 것을 강조하면서 장소기반이 아니라 인력기반의 재활체육 서비스로 나아가고 있다. 넷째, 재활체육 단순한 의료적 프로그램이나 스포츠 중심이 프로그램이 아니라 질병 중심의 장애유형별 체계화된 프로그램이 필요하다. 마지막으로 이용자 중심의 서비스 전달과정이 마련되어야 한다. The objective of this study is to suggest measures to support the community-based rehabilitation sports service for health of people with disabilities, which can be applicable to South Korea, by analyzing the rehabilitation sports service support system of Germany and Japan. Through literature review and direct visiting to Japan, the researcher explored such factors as, background of initiating the rehabilitation sports service, concept, range, and subject of theservice, service delivery procedure, and institutions, and finance of the service. The institutional implications are as follows: First, the concept and range of rehabilitation sports are gradually expanding. Initially, the rehabilitation sports started targeting for veterans with disabilities for the purpose of medical rehabilitation in Germany and Japan. As time passes, however, the importance of rehabilitation sports has emphasized, and the subjects have gradually expanded for the purpose of preventing disability or secondary diseases caused by disability. Second, in order to perform rehabilitation sports service, it is essential to have manpower with expertise in medical treatment, welfare, disability, and exercise prescription, likewise Germany and Japan do. Third, Germany and Japan emphasize the assignment of rehabilitation sports instructors in institutions, rather designating specific institutions, which is moving toward the manpower-based rehabilitation sports service, rather place-based service. Fourth, rather having simple medical programs or sports-oriented programs, it would be necessary to have the systematized disease-oriented programs for each type of disability. Lastly, the clients-oriented service delivery process should be established.
Malachite Green유도체의 합성과 그 항균성에 관한 연구
金浩植,金鍾大,金在根,韓文洙 嶺南大學校附設 基礎科學硏究所 1986 基礎科學硏究 Vol.6 No.-
Malachite Green derivative bearing butyl group was prepared in the form of Leuco base, 4-butyl-4'. 4"-bis(dimethylamino) triphenylmethane, by the condensation reaction of N,N-dimethylaniline with the formyl derivative of butylbenzene, which had been obtained from butylbenzene by chlormethylation followed by oxidation. The butylbenzene was prepared by the alkylation reaction of benzene with n-butyl choride which had been obtained from n-butyl alcohol and zinc chloride. The antimicrobial and antifungal activity of buty-Malachite Green was evaluated in terms of minimum inhibitory concentration by the dilution method. The butyl-Malachite Green showed considerably increasing activity. This activity was stronger than that of hexyl-Malachite Green. This phenomenon suggested that the activities of the alkyl derivatives increase with decrease in the number of carbon in the alkyl group.