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      • KCI등재후보

        2009년 인플루엔자 대유행 중 인플루엔자 진료소 방문자의 연령 분포 변화

        김백남,곽이경,문치숙,김연숙,김의석,배인규,염준섭,이창섭,허지안 대한감염학회 2010 감염과 화학요법 Vol.42 No.2

        The pandemic influenza (H1N1 2009) virus, after being introduced in Korea in April, 2009, spread rapidly nationwide in mid-2009. This study was conducted to characterize trend in age distribution of visitors to Flu-clinics during the pandemic. Demographic, clinical and laboratory data of visitors to flu clinic from Week 36 to 52 (August 30 to December 26) of 2009 were retrieved and collected from electronic databases at 9 hospitals. Visitors 0-6, 7-12, 13-18, 19-29, 30-64, and 65 years or more of age were classified into group I to VI, respectively. A total of 107,467 visitors were seen at Flu-clinics for a 17-week study period. Of those, 32,485 were laboratory-confirmed. Antivirals were prescribed for 62,533 visitors. Numbers of visits, prescriptions of antivirals, and laboratory-confirmed cases of the pandemic influenza (H1N1 2009) peaked at Week 44. A large number of visits by group II and III were followed by those of group I and V, especially around the peak. Numbers of visits by group VI were lowest in all hospitals. In some hospitals, higher number of visits lasted longer in children than in adults while vice versa in other hospitals depending on the location. In summary, the pandemic influenza (H1N1 2009) was presumed to peak in late October and involved majorly children and students in Korea. Unique age distribution of visitors to flu clinic was observed in some hospitals.

      • 사용후핵연료 차세대관리공정 장비의 내방사선 요건 분석

        김성영,송태길,윤지섭,정운관,여화연 조선대학교 에너지.자원신기술연구소 2003 에너지·자원신기술연구소 논문지 Vol.25 No.1

        For hot operation of advanced spent fuel conditioning process(ACP), the analysis of radiation-resistant Requirements effect and the system design process are required to design equipment to operate to operate reliably in a gamma radiation environment such as hot cell. To analysis the effects of radiation for ACP, we used the SCALE codes which were certified by Nuclear Regulatory Commission(NRC). The source term was calculated which reflects the features of target nuclear fuels using ORIGEN-S, a module of the SCALE code, and the gamma dose rates were calculated by using the QADS modules, considering the geometry of process equipment respectively. the results are shows that the value was maximum 3.03 ㏉/h from the rod storage box in hot cell, maximum 0.6 ㏉/h from the metallizer, and maximum 72.0 ㏉/h from the vol-oxidizer. Considering those values, the design methods for shielding and repositioning the major equipments and components should be induced, and, the preventive maintenance for components before failure actually occurs should be minimized the effects of radiation.

      • KCI등재

        天然闊葉樹林內 主要 構成 樹種의 天然更新 樣相

        金知洪,梁熙文,金光澤,李元燮,姜聲基 강원대학교 삼림과학연구소 2001 Journal of Forest Science Vol.17 No.-

        이 연구는 "국유림 경영 현대화 산학 협동 실연 연구"의 일환으로 강원도 평창군 가리왕산 일대 천연활엽수림을 대상으로, 주요 수종별 천연갱신 특성을 평가하여 연구대상 산림의 전반적인 천연갱신에 대한 종합적인 생태적 정보를 제공하고자 실시되었다. 수종별 천연갱신 특성을 요약하면 다음과 같다. 거제수나무 : 비산되는 종자이므로 종자 공급에는 문제가 없으나, 종자 발아를 위해서 노출된 광물질토양이 필요하며, 두꺼운 낙엽층은 종자 발아를 제한한다. 발아 후 갱신치수는 다량의 광선을 필요로 한다. 고로쇠나무 : 내음성은 강하나, 치수의 내건성이 약하므로 50% 이상의 피음을 요구하며, 우량 형질의 임목 조성을 위해 높은 초기 밀도를 유지하여야 한다. 맹아정신력은 높다. 난티나무 : 수분 요구도가 높고 내음성이 약하므로 60% 가량의 상층 울폐도를 유지하여 보습과 광선유입이 원활하여야 하며, 치수 활착을 위해서 관목류 및 기타 식생으로부터 경쟁 요인을 제거한다. 들메나무 : 종자 발아를 위해 광물질 토양의 노출이 필수적이며, 치수 활착을 위해서 다량의 수분과 광선이 요구되고, 지피식생에 의한 치수의 피압이 우려되므로 임지정리작업 도입이 필수적이다. 물푸레나무 : 종자 결실의 풍흉이 심하며, 두꺼운 낙엽층은 종자발아를 제한한다. 치수 활착시 지피식생에 의한 피압이 우려되므로 임지정리작업의 도입이 필수적이다. 신갈나무 종자공급의 문제(설치류에 의한 피해) 및 두꺼운 낙엽층 및 조릿대 밀생 지역에서는 종자발아가 제한되며, 치수 발생 후, 임관의 50% 이상을 열어줄 필요가 있고, 맹아갱신력이 높다. 음나무 : 두꺼운 낙엽층은 종자발아를 제한하며, 유령목 생육에 다량의 광선이 요구된다. 젓나무 : 내음성은 강하나, 유령목 단계에서 생육은 극히 저조하다. 층층나무 : 동물에 의해서 종자가 산포되지만 종자 피해는 불가피하며, 발아와 치수 활착을 위해서 단량의 광선이 요구된다. 피나무 : 종자 충실률이 낮고 이중 휴면성 때문에 종자 공급에 어려움이 있으며, 두꺼운 낙엽층은 종자발아의 걸림이 되므로 광물질 토양이 필요하고, 맹아갱신력이 매우 높다. Forming a part of "Cooperative Practical Study for the Modernization of the Management of National Forest", this study was conducted to provide overall ecological information for the natural regeneration of major tree species on the basis of community structural attributes in the deciduous forest ecosystem. Followings are summarized characteristics of the natural regeneration for the selected tree species. Betula costata : Although large number of seeds are dispersed by wind, they require mineral soils to germinate. Thick litter layer could be an obstacle to germinate. After germination, the seedling requires large amount of light for successful establishment. Acer mono : Characterized by high shade tolerance and weak drought resistance, the seedling should be overcasted with more than 50% of canopy coverage. High stand density should be maintained to produce good quality of timber. The potential of coppice may be high. Ulmus laciniata : Since this species needs high rate of troll moisture and light, around 60% of canopy coverage should be maintained to retain moisture and incoming light. The competition with other vegetation should be removed for the favor of successful seedling establishment. Fraxinus mandshurica : This species requires moist mineral soils to germinate. After germination, the seedling needs large amount of light and moisture for successful establishment. Site preparation should be applied to reduce competition with weedy vegetation. Fraxinus rhynchophylla : Interval of large seed crops may be highly varied. Thick litter layer could be an obstacle to germinate. Site preparation should be applied to reduce competition with weedy vegetation so as to achieve successful seedling establishment Quercus mongolica : Including the difficulty of seed supply by the consumption, thick litter layer and mountain bamboo cover could be the obstacle to germinate. More than 50% of relative light intensity is necessary to achieve successful seedling establishment. Kalopanax pictus : Thick litter layer could be an obstacle to germinate. The seedling needs large amount of light and moisture for successful establishment. Abies holophylla : In spite of high shade tolerance, the growth rate in sapling stage may be extremely slow. Cornus controversa : Seeds (drups) are consumed and dispersed by animals, tending to be not sufficient in seed supply. This species requires large amount of light for successful germination and seedling establishment. Tilia amurensis : The difficulty of seed supply might be expected with low seed purity and double dormancy. Since thick litter layer could be an obstacle to germinate, the species requires moist mineral soils for successful germination. The potential of coppice may be extremely high. Key words : natural deciduous forest, natural regeneration microtopography

      • KCI등재후보
      • SCOPUSKCI등재

        Polyozellus multiplex가 생산하는 지질과산화 저해물질

        황지숙,송경식,김양섭,석순자,이태호,유익동 한국미생물생명공학회 ( 구 한국산업미생물학회 ) 1996 한국미생물·생명공학회지 Vol.24 No.5

        담자균류로부터 지질과산화 저해물질을 탐색하던 중 강원도 오대산 지역에 자생하는 버섯의 한 종류로 부터, Sparague-Dawley계 rat의 간 mirosome 분획의 지질과산화를 강하게 억제하는 물질이 있음을 발견하였다. 이 버섯의 미생물학적 특성을 관찰한 결과 민주름버섯목, 굴뚝버섯과에 속하는 까치버섯(Polyzellus multiplex)으로 동정하였으며 본 버섯의 자실체 methanol 추출물을 benzene, ethylacetate로 순차적으로 추출하고 각종 chromatography를 이용하여 활성물질을 정제한 결과, ethylacetate층으로 부터 황산화활성을 나타내는 PM1을 benzene층으로 부터 지방산 계열의 PM2와 PM3 화합물을 순수하게 분리 정제하였다. PM1은 정색반응 및 각종 기기분석 결과 thelephoric acid계의 화합물로 동정되었으며 PM2 및 PM3는 각각 linoleic acid와 oleic acid로 동정되었다. 지질과산화 활성물질로 분리정제한 PM1 화합물의 IC_50 값은 1.96 ppm이었으며 LD_50 값은 500 mg/Kg 이상이었다. In the course of screening lipid peroxidation inhibitor from basidiomycetes, a mushroom, which was collected at O-Dae mountain in Kangweon-Do, was found to have active compound. The mushroom was identified as Polyzellus multiplex, which belongs to Aphylloporalles Thelephoraceae, on the basis of macroscopic and microscopic characteristics of the fruiting body. The methanol extract of fruiting body was extracted with benzene and ethylacetate, sequentially. By using various kinds of chromatographies, PM1, and PM2 and PM3, were purified from the ethylacetate extract and the benzene extract, respectively. Color reaction and analyses of IR, UV, and NMR spectra indicated that PM1 was a derivative of thelephoric acid, and PM2 and PM3 were linoleic acid and oleic acid, respectively. IC_50 of PM1 for inhibition of lipid peroxidation was 1.96 ppm and LD_50 was 500 mg/kg.

      • 콩 및 당의 종류의 달리한 매실 콩아이스크림의 품질특성

        이숙영,김아영,유지영,이중기,이향섭 중앙대학교 생활과학연구소 2003 생활과학논집 Vol.17 No.-

        The purpose of this experiment was to compare the quality characteristics of soy ice creams prepared with soy protein isolate(SPI) or Jinpum-soybean, and different kinds of sweeteners of maltitol and sucrose, xylitol+sucrose, or malitiol. The viscosity of the ice cream mix containing xylitol+sucrose appeared the highest, and that from Jinpum-soybean was higher than that from SPI. The overrun of soy ice creams containing xylitol+sucrose was the highest, and the next was the samples containing maltitol+sucrose. The overrun values of Jinpum-soybean samples appeared higher than those of SPI samples. As for the case of the SPI samples, the melt-down percent was the highest in the sample of maltitol addition, and the next were maltitol+sucrose addition, xylitol+sucrose addition in order. The melt-down percent of Jinpum-soybean was the highest in the sample of maltitol+sucrose addition, and the next were maltitol addition, xylitol+sucrose addition in order. The higher the viscosity of samples, the lower the melt-down percent. In sensory characteristics, the beany flavor, flavor, mouthfeel, overall quality of Jinpum-soybean samples were evaluated better than those of SPI in general. The samples containing xylitol+sucrose evaluated better in beany flavor, mouthfeel, icy feel, and overall quality. The quality characteristics of the samples prepared with Jinpum-soybeans and xylitol+sucrose were evaluated the best.

      • 韓國地方大都市에 있어서의 階層構造에 관한 實證的 관한 硏究(Ⅱ) : 階層移動의 分析을 中心으로 An Analysis of Current Trends in Status Mobility

        柳時中,金至變 경북대학교 1986 社會科學 Vol.5 No.-

        As a following study of "An Empirical Study on the Stratified Structure of a Local Metropolis, Taegu, in Korea(I) which analyzed stratum and class consciousness of Taegu citizens," this study is to analyze the social mobility in the same community. The main content of this study is focused on the various aspects of inter-generational and intra-generational mobility. The measurement index of social mobility in this survey is the occupational rank which is most commonly used by social mobility researchers. Under these purposes and methods, the major results analyzed in this research are as follows: First, the noticeable facts in inter-generational mobility are that ① the total amount of observed mobility is very high(90%); ② the amount in mobility by both inflow and outflow level is also high; ③ both the upward and the downward mobility in any direction are open, but there are obstacles to mobility between manual and nonmanual occupations; ④ the leading cause in this open mobility is that the structural factors based on industrialization and urbanization are more salient than circular ones. Secondly, trends of intra-generational mobility seems to be limited and reduced compared to those of inter-generational mobility. The realities of trends are as follows: ① The continuing rate from first job to present one is high; ② thus, the observed mobility rate is much lower than that of inter-generational mobility; ③ this high continuing rate indicates that the first job of an individual plays a strong influence upon the present job he occupies; ④ and it is expected that the first job is affected by the levels of educational attainment.

      • 가막사리(Bidens tripartita L.)와 미국가막사리(Bidens frondosa L.) 종자의 발아에 미치는 몇가지 요인

        신혜정,신종섭,김지훈,김학윤,이인중,신동현,김길웅 경북대학교 농업과학기술연구소 1999 慶北大農學誌 Vol.17 No.-

        The experiments were conducted to determine the factors such as light and darkness, phytohormone and seed coat, influencing on seed germination of Bidens tripartita L. and B. frondosa. The seeds of both species were germinated when seed coat was damaged and weakened GA3 and BA stimulated germination of both species but ABA and IAA had no effect on germination of them, which ranged 50.0% to 80.0%. In B. forndosa, when inner layer of seed coat was removed, germination was highly promoted up to 96.7% compared with 10.0% germination rate in another treatments.

      • 족삼리 침자극의 복통 억제기전 연구

        임사비나,임형택,박히준,장지련,최일환,이석찬,김대수,신희섭 WHO COLLABORATING CENTRE FOR TRADITIONAL MEDICINE 2004 東西醫學硏究所 論文集 Vol.2004 No.-

        Objective : Acupuncture has been used for treatment of numerous disorders, especially for pain control in Oriental Medicine. However, the mechanism of pain control by acupuncture was not clear until now. This study was performed to prove analgesic mechanism of acupuncture treatment at acupoint ST_(36) by observing the changes of abdominal pain and c-Fos expression in the thalamus. Methods : Abdominal pain was induced by acetic acid, and the changes of writhing reflex after acupuncture treatment an ST_(36) and non-acupoints were measured. c-Fos immunohistochemistry was also performed to study the changes of the neuronal activity in the thalamus. Results : The writhing reflex decrease significantly after acupuncturing at ST_(36) compared with control group(p<0.05). The changes of the writhing reflex by non-acupoint acupuncture treatment also showed significant decrease compared with control group(p<0.05). c-Fos expression in the thalamus, especially periventricular part was significantly decreased after acupuncturing at ST_(36) compared with control groups(p<0.05). Conclusion : This study shows that the acupuncture has the analgesic effect in the abdominal pain induced by acetic acid and the thalamus might be a important area for this mechanism.

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