RISS 학술연구정보서비스

검색
다국어 입력

http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.

변환된 중국어를 복사하여 사용하시면 됩니다.

예시)
  • 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
  • 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
닫기
    인기검색어 순위 펼치기

    RISS 인기검색어

      검색결과 좁혀 보기

      선택해제
      • 좁혀본 항목 보기순서

        • 원문유무
        • 음성지원유무
        • 원문제공처
          펼치기
        • 등재정보
          펼치기
        • 학술지명
          펼치기
        • 주제분류
          펼치기
        • 발행연도
          펼치기
        • 작성언어
        • 저자
          펼치기

      오늘 본 자료

      • 오늘 본 자료가 없습니다.
      더보기
      • 무료
      • 기관 내 무료
      • 유료
      • KHFe(CO)_4-HCHO系를 利用한 Nitro 및 Nitroso化合物의 환원 N-메칠화 반응

        沈相喆,閔庚隱,嚴在國,洪錫 경북대학교 1978 논문집 Vol.10 No.-

        The reduction of nitro and nitroso compounds using tetracarbonylhydridoferrate-formaldehyde under mild conditions (at room temperature and then 60℃ under CO) gives the corresponding N, N-dimethylation via N-methylation in good to excellent yields. The reaction mechanism via immonium salt is assumed.

      • 다이아몬드상 카본 박막의 레이저공정 변수에 따른 상변이와 내마모성 특성변화

        심경석,차금환,이상렬,김대은 연세대학교 산업기술연구소 1999 논문집 Vol.31 No.2

        Diamond-like carbon(DLC) thin films have been fabricated by pulsed laser deposition method with various deposition parameters. The characterization of fabricated thin films was performed depending on the deposition parameters. As the kinetic energy provided by deposition temperature and the laser energy density were increased, the film showed graphite properties. Structural properties of the films were investigated by Raman spectroscopy. The growth energy should be optimized to fabricate high quality DLC thin films. DLC films showed high hardness and their friction coefficients were measured to be about 0.2 regardless of the load of the ball pin.

      • KCI우수등재

        주상복합아파트 단지의 데크계획에 관한 연구 : 부산 L-project 계획안을 중심으로 focusing on plan of L-project in Pusan

        박은주,심재현,김영욱,정성문 대한건축학회 2004 대한건축학회논문집 Vol.20 No.12

        The purpose of this study is to analyze the planning and the design of public space at the street level of Mixed-use buildings This study is based on the spatial analysis with Space Syntax method and its outcome Example is plan of L-project in Pusan The results of this study were as follows, Drew design plan that consider link with surrounding environment, leading pedestrian and separation of vehicles for the convenience of pedestrian line, when deck planning for inside of Mixed-use buildings Also, categorizing various use of the deck will give more clear design guideline for future planning of similar

      • LabVIEW를 이용한 전력품질 분석기술 교육용 웹기반 e-learning 시스템 구현

        홍상은,심필섭,한장이 순천향대학교 부설 산업기술연구소 2005 순천향 산업기술연구소논문집 Vol.11 No.2

        In this paper, we focused on the implementation of e-learning system for training of power distribution operators in Power Company. And also this paper presents Web-based system for electric power quality analysis based on the LabVIEW approach to enhance streaming of live data and to facilitate the interaction on the PC platform The recent growth in the use of impactive nonlinear loads, electronic and medical devices with sensitiveness to power quality has caused many power quality problems and power supply-and-demand problem. Therefore, the proposed system can also support the solution tool for field operators in the various power quality problems.

      • 돼지 신장세포(PK15)의 이종이식 거부반응에 대한 재조합 IL-18의 영향

        최연실,김은미,김영관,박상연,심정현,윤도영,강형식,명평근 충남대학교 생물공학연구소 2004 생물공학연구지 Vol.10 No.1

        Various cytokines including IL-1β, IL-2, IL-4, IL-10, IL-12p40, IFN-γ, and TNF-α have been recently reported to play important roles in both host and donor cell activations during xenotransplantation. Interleukin (IL)-18, a proinflammatory cytokine, can induce IL-4 and IL-13 production in T cells, NK cells, B cells, mast cells, and basophils. IL-18 has the capacity to stimulate innate immunity and both Th1-and Th2- mediated responses, but little is known to involve in the xenograft rejection. In order to investigate the role of IL-18 in xenograft rejection, we transplanted the pig kidney (PK15) cells to C57BL/6 mouse with or without intraperitoneal injection of mouse recombinatant IL-18. It was analyzed the population of T cell, B cell and NK cell in the mice transplanted with PK 15 cells and recombinant IL-18 by flow cytometry. We found that splenic CD3+ T cells were increased in mice injected PK15 cells with recombinant IL-18. These results suggest that recombinant IL-18 is critical in the xenograft rejection by increasing T cell population of the recipients.

      • KCI등재

        기관지폐 이형성증의 임상 양상: 다기관 연구

        성기혜 ( Ki Hye Sung ),김민희 ( Min Hee Kim ),김은령 ( Eun Ryoung Kim ),심재원 ( Jae Won Shim ),이정주 ( Jung Ju Lee ),임재우 ( Jae Woo Im ),진현승 ( Hyun Seung Jin ) 대한주산의학회 2009 Perinatology Vol.20 No.3

        목적: 최근 극소 저출생 체중아의 생존율의 개선으로 기관지폐 이형성증(bronchopulmonary dysplasia, BPD)이 늘고 있다. 다기관 연구에 의해 전국적인 BPD의 역학, 임상 양상과 각 병원 간의 차이를 조사하여 향후 우리나라의 BPD 감소와 중증도를 줄이는 것을 목적으로 본 연구를 시행하였다. 방법: 2005년 6월부터 2007년 5월까지 건국대학교병원, 영등포 성애병원, 강북삼성병원, 중앙대학교병원, 건양대학교병원, 강릉아산병원의 신생아 집중 치료실에 입원하였던 신생아 4,476명을 대상으로 하였다. BPD의 진단 기준은 비전형적인 BPD를 포함하여 병인적인 분류를 하고 있는 Ogawa 등의 분류법을 이용하여 신생아 호흡 곤란 증후군(respiratory distress syndrome, RDS)과 전형적 또는 미만성 혼탁의 방사선 소견, 산전 감염의 유무에 따라 6가지 type으로 분류하였다. 또한 전체 신생아의 출생체중 분포와 생존율, 각 출생체중 군별 BPD의 발생률, 병태 비율, 사망률 등을 조사하고, 이 후 재택 산소요법 시행 여부와 미숙아 망막증, 괴사성 장염 등의 합병증 여부를 조사하였다. 결과: 생후 28일째 산소 치료가 필요한 신생아는 89명이었고, 이 중 Ogawa 분류법에 의한 BPD 환아는 70명(1.6%)이었으며, 특히 1,500 g 미만의 환아 237명 중 60명(25.3%)이었다. 생후 28일 이상 생존율은 98.7%이고, 사망 예는 없었으며 평균 재원 기간은 97.8±51.2일(43~405일)이었다. BPD는 900~999 g, 1,000~1,249 g의 체중 군에서 발생률이 각각 15명(21.4%)으로 가장 높았으며, 교정 36주 이후에도 산소투여가 필요한 중증 BPD의 경우 900~999 g의 체중 군에서 7명(23.3%)로 가장 높았다. Ogawa 분류법으로 BPD의 각 병태 비율로는 RDS 이후에 나타나는 I, II형이 각각 전체의 17예(24.3%), 44예(62.9%)로 대다수를 차지하였다. 이외에도 III`형은 2예(2.9%), IV형은 2예(2.9%), V형은 5예(7.1%)이었고, III형, VI형은 없었다. 재택 산소요법은 8예에서 시행되어 전체의 11.4%였으며, 이 중 BPD I형이 7예로 87.5%를 차지하였다. 미숙아 망막증은 35명(50.0%)에서 발생하였으며, 700 g 이하 신생아에서 9예(26.5%)로 가장 많았다. 또한 괴사성 장염은 3명(4.3%)이었다. 결론: 본 연구는 국내에서 처음으로 진행된 BPD의 전국적인 다기관 역학 조사로, 대상 신생아의 Ogawa 분류에 의한 BPD 유병률은 1.6% 이었고 1,500 g 미만 신생아의 25.3%이었으며, 전체 신생아의 BPD 70명 중 Ogawa 분류의 I, II형이 각각 24.3%, 62.9%로 대다수를 차지하였다. Purpose: As the neonatal intensive care advanced, the incidence of neonatal bronchopulmonary dysplasia (BPD) has increased. We conducted a multi-center investigation of the prevalence of BPD in six hospitals to investigate the epidemiology of BPD in Korea. Methods: Retrospective reviews ware performed for survival rate, prevalence of BPD of total 4,476 newborn infants who were admitted to neonatal intensive care unit in Konkuk university hospital, Sung-Ae General hospital, Kangbuk Samsung hospital, Chung-Ang university hospital, Konyang university hospital, and Gangneung Asan hospital between June, 2005 and May, 2007. By Ogawa, BPD was defined as oxygen dependency at 28 days after birth, with respiratory distress symptoms and the change of chest x-ray finding, and classified as 6 subtypes. Classic BPD was defined as oxygen dependency at 36 weeks of postmenstrual age. Results: Survival rate at 28 day after birth was 98.7%. BPD infants by Ogawa classification were 70 (1.6% of overall newborn infants), classic BPD infants were 30 (0.7%). Especially, among 237 preterm infants with birth weight less than 1,500 gram who survived to 28 days of life, 60 (25.3%) had BPD by Ogawa classification and 23 (9.7%) had classic BPD. In Ogawa classification, infants with RDS as type I and II, were 17 infants (24.3%) and 44 infants (62.9%). Home oxygen therapy was performed 8 infants (11.4%). Prevalence of retinopathy of prematurity was 35 infants (50.0%), necrotizing enterocolitis was 3 infants (4.3%), and intraventricular hemorrhage was 6 infants (8.6%). Conclusion: Prevalence of BPD infants was 1.6% of overall newborn, 25.3% of preterm infants with birth weight less than 1,500 gram. Among 70 BPD infants, BPD by Ogawa classification with history of RDS as type I and II were 24.3%, 62.9% as the majority of BPD. This study would be the first report of epidemiology of Korean BPD infants by multi-center study.

      • KCI등재

        식물성 식품중 총플라보노이드 함량과 생리활성 탐색

        이종미,손은심,오상석,한대석 한국식생활문화학회 2001 韓國食生活文化學會誌 Vol.16 No.5

        The contents of total flavonoids, total antioxidant status and superoxide scavenger activity of edible plants were measured. Among twenty one samples of leafy vegetables and teas, mugwort (Artemesia capillaris) and green teas gave high total flavonoids contents, 48.2㎎/g sample and 44.7㎎/g sample, respectively. The highest concentration of total flavonoids among eighty nine samples analyzed was 52.1㎎/g sample from propolis. When samples were tested for total antioxidant status, a kind of groundsel showed the highest Total Antioxidant Status(TAS) value, 13.4 mM among leafy vegetables and teas and green tea gave high TAS value, 11.84 mM. On the other hand, purslane gave the lowest TAS value, 0.01 mM. The superoxide scavenge activity was measured from the extracts of all edible plants. The superoxide scavenge activity of polygonatum (81.1%) and chrysantemum (78.5%) were the highest among leafy vegetables, teas and medicinal plants. On the other hand, ginseng, poria, cassiae semen and dioscoreae rhizoma showed no superoxide scavenge activities.

      • KCI등재

        학업우수 초등학생 자녀를 둔 어머니의 진로지도 경험에 관한 질적 연구

        하정,이항심,정혜윤,김은덕,유성경 한국직업능력개발원 2007 직업능력개발연구 Vol.10 No.3

        본 연구는 학업우수 초등학생 자녀를 둔 어머니의 진로지도 경험을 한국의 사회·문화적 맥락에서 밝히고자 하였다. 이를 위해 서울지역에 살고 있는 초등학교 6학년인 학업우수아의 어머니 9명을 심층면담하고, 질적 연구 방법으로 분석하였다. 연구 결과, 107개의 개념과 44개의 하위 범주, 그리고 14개의 범주가 도출되었다. 어머니들의 진로지도 경험을 포괄하는 핵심범주로는 '자녀의 성취를 위해 자녀의 특성을 존중하고 자녀의 자율성을 키우면서 자신이 바람직하다고 여기는 방향으로 이끌어감'으로 밝혀졌다. 연구 결과를 바탕으로 학업우수 초등학생 자녀를 둔 어머니의 진로지도 경험의 실체를 논의하였으며, 부모를 대상으로 한 진로교육프로그램의 필요성과 후속 연구에 대한 제언을 하였다. This study examined the experience about career guidance of mother who has a academically talented child in Korea. Nine mothers were interviewed and the interview data were analyzed based on the Qualitative Research Method. Result has107 concepts, 44 subcategories and 14 categories. The core category is "The mothers consider their children's characteristics for the children's accomplishment and foster children's self-control and lead their children to desirable object the mothers view".Implications of the results and suggestions for future research are discussed.

      • KCI등재

        항정신병약물을 처음으로 사용하는 초발 정신증 환자에서 나타나는 체중 및 대사성 지표의 변화 : 후향적 연구

        김우진,심주철,공보금,강제욱,문정준,김정은,김민걸,박민경,김성진,김현정,정도운 대한생물치료정신의학회 2011 생물치료정신의학 Vol.17 No.2

        Objectives:This study was to identify weight & metabolic changes in first-episode psychotic patients with antipsychotics use and investigate the differences of weight & metabolic changes between first-episode psychotic patients and controls with antipsychotics use. Method:In this retrospective study, twenty eight first-episode psychotic patients and twenty eight controls with schizophrenia, schizoaffective or bipolar disorder defined by DSM-IV criteria were included. Information about demographic and clinical characteristics of the subjects was gathered from the medical records. Also body weight, sBP, dBP, fasting glucose, lipid profile and WBC count were evaluated before and after antipsychotics use. Rogistic regression was conducted to assess factors associated with weight gain. Results:First-episode psychotic patients showed more weight and BMI changes than controls after antipsychotics use, and these changes continue over 12 months. On the other hand, there were no significant factors associated with weight gain. Conclusion:The results of present study suggest that antispychotics is one of the major causes inducing weight gain of psychotic patients and antipsychotics-induced weight gain is more vulnerable to drug-naive first-episode psychotic patients.

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼