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      • KCI등재

        Two Newly Recorded Species of the Genus Ypsolopha Latreille (Lepidoptera: Ypsolophidae) from Korea

        나솔문,안능호,변봉규,배양섭,Na, Sol-Moon,Ahn, Neung-Ho,Byun, Bong-Kyu,Bae, Yang-Seop Korean Society of Applied Entomology 2016 한국응용곤충학회지 Vol.55 No.1

        Ypsolopha속 (나비목:Ypsolophidae)의 2종, Ypsolopha vittella (Linnaeus, 1758)와 Ypsolopha nigrofasciata (Yang, 1977)를 우리나라에서는 처음으로 보고한다. 이 두 종의 진단형질, 기재, 분포, 기주식물, 성충사진 및 암컷 생식기 사진을 제시하였다. Two species of the genus Ypsolopha Latreille are reported for the first time from Korea: Ypsolopha vittella (Linnaeus) and Y. nigrofasciata Yang. The diagnosis, description, distribution, host plants, adult photographs, and pictures of female genitalia are provided.

      • KCI등재후보

        하계 실내 및 실외환경의 공기 중 휘발성 유기화합물 농도 및 개인노출

        양원호,손부순,박종안,장봉기,박완모,김윤신,어수미,윤중섭,류인철 한국환경과학회 2003 한국환경과학회지 Vol.12 No.9

        Volatile organic compounds (VOCs) are present in essentially all natural and synthetic materials from petrol to flowers. In this study, indoor and outdoor VOCs concentrations of houses, offices and internet-cafes were measured and compared simultaneously with personal exposures of each 50 participants in Asan and Seoul, respectively. Also, factors that influence personal VOCs exposure were statistically analyzed using questionnaires in relation to house characteristics, time activities, and health effects. All VOCs concentrations were measured by OVM passive samplers (3M) and analyzed with GC/MS. Target pollutants among VOCs were Toluene, o-Xylene, m/p-Xylene, Ethylbenzene, MIBK, n-Octane, Styrene, Trichloroethylene, and 1,2-Dichlorobenzene. Indoor and outdoor VOCs concentrations measured in Seoul were significantly higher than those in Asan except Ethylbenzene. Residential indoor/outdoor (I/O) ratios for all target compounds ranged from 0.94 to 1.51 and I/O ratios of Asan were a little higher than those of Seoul. Relationship between personal VOCs exposure, and indoor and outdoor VOCs concentrations suggested that time-activity pattern could affect the high exposure to air pollutant. Factors that influence indoor VOCs level and personal exposure with regard to house characteristics in houses were building age, inside smoking and house type. In addition insecticide and cosmetics interestingly affected the VOCs personal exposure. Higher exposure to VOCs might be caused to be exciting increase and memory reduction, considering the relationship between measured VOCs concentrations and questionnaire (p<0.05).

      • 濟州島 植生의 植物社會學的 硏究 2. 闊葉樹의 二次林

        梁英煥,金文洪,金奉燦 濟州大學校 基礎科學硏究所 1990 基礎科學硏究 Vol.3 No.1

        本 硏究는 濟州島의 闊葉樹 二次林에 대하여 植物社會學的 方法으로 現存植生과 遷移過程을 把握하기 위하여 實施하였다. 濟州島 闊葉樹 二次林의 現存植生은 동백나무群網 二次林과 참나무 群網 二次林으로 大別되며 4개의 群落과 4개의 亞群落으로 區分되었다. Ⅰ. 동백나무群網 (Camellietea jponiae Miyawaki et Ohba 1963)의 二次林 A. 종가시나무群落 (Quercus glauca community) a. 산유자나무亞群落 (Xylosma congestum subcommunity) b. 개가시나무亞群落 (Quercus gilva subcommunity) B. 더부살이고사리群落 (Polystichum lepidocaulon community) Ⅱ. 참나무群網 (Fagetea crenatae Miyawaki, Ohba et Murase 1964)의 二次林 A. 상산群落 (Orixa japonica community) B. 졸참나무群落 (Quercus serrata community) a. 붉은가시나무亞群落 (Quercus acuta subcommunity) b. 주목亞群落 (Taxus cuspidata subcommunity) The secondary broad-leaved forests in Cheju Island were investigated from the phytosociological point of view. As the result, it was clarified that the secondary broad-leaved forests of this area were classified in the following four communities and four subcommunities. Ⅰ. Belong to Camellietea japonicae A. Quercus glauca community a. Xylosma congestum subcommunity b. Quercus gilva subcommunity B. Polystichum lepidocaulon community Ⅱ. Belong to Fagetea crenatae A. Orixa japonica community B. Quercus serrata community a. Quercus acuta subcommunity b. Taxus cuspidata subcommunity

      • 나비目 終齡幼蟲의 血球에 關한 電顯的 硏究

        梁凞永,李鳳熙,鄭啓憲 순천향의과대학 1979 Journal of Soonchunhyang Medical Science Vol.2 No.1

        Morphological studies on larval hemocytes of varioius insects were performed in two ways of research. Ⅰ. Finestructures. An electron microscopical study on hemocytes of last instar larvae of 12 species of Lepidoptera was performed to observe cell types, structrues, raions, relationships and their origins. The results are as follows; 1) Prohemocytes are the smallest round cells with large numlesus, poorly developed cytoplasmic organelles and lower composition ratio, accounting for less than 5% of all cell types. Little remarked differences were revealed among prohemocytes of varous insects and they are thought to be the origins of other cell types. 2) Palsmatocytes are relatively large cells with higher composition ration, accounting for about 40%. They could be subdivided into two forms, oval and spindle. Oval cells are rich in cytoplasmic projections and organelles. But the spindle cells include few of them, while nearly all of the spindle cells possess some microtubules as their cytoskeletons. Some marked difference were revealed among different insects. The most exceptional structure was the fibrous bundles located in both nucleus and cytoplasm in Sericinus telamon Donovan. 3) Granular cells are characterized by various granules in cytoplasm, and by higher composition ration, accounting for about 50% of all numbers. They could be subdivided into three forms, oval, round and spindle with fully developed cytoplasmic organelles and Projections. Cellular fractions were often noticed to be enclosed by granular cells, indicating some activities of phagocytosis. Granular cells are the most pleomo rphous of all cell types, and the most exceptional structures are the bundles of microfibrils in Phalerodonta manleyi Leech. 4) Adipohemocyte were found only in Plodia interpunctella Hubner. They are somewhat oval with few cytoplamic projections and less developed organelles. Some granular cells were found to accumulate lipid droplets into the cytoplasm by trapping floating lipid droplets, adn the adipohemocytes are believed to be originated from formers. 5) Sperule cells were found nearly in all specimens and characterized by sperules composed of flocculent materials. They are round or oval with few cytoplasmic organelles. The most conspicuous spherulesof all sperule cells were radial arrangement of sperules in Adristyrannus amurensis Staudinger and presence of the specific granules in Mamestra illoba Butler. Young sperule cells resembled the granular cells and it is possible that they originate from granular cells. 6) Oenocytoids are large cells and were found nearly in all specimens. They could be subdivided into 3 types according to their inclusions, such as microfibrils, microtubules and none of them. Young Oenocytoids resemble the giant plasmatocytes, perhaps in dicating to be originated from the latters. Ⅱ. Composition ratios of cell types from mid 5-instar to late prepupa. Composition ratios of cell types were investigated in phalerodonta manley; Leech and could be summarized as follows; 1) Prohemocytes disappeared from the stage of early prepupa. 2) Plasmatocytes increased in number at mid stages of each inster and decreased nearing to pupal stage. 3) Granular cells reached peak at early prepupal stage. 4) Adipohemocytes heavily increased at late prepupal stage. 5) Sperule cells increased at late stage of each instar and reached peak at late prepupal stage. 6) Oenocytoids increased at late stage of each instar and reached peak at early prepupal stage.

      • 水素化된 非晶質 게르마늄의 特性調査(Ⅰ)

        梁承勳,李原鎭,朴奉斗 慶北大學校 1985 論文集 Vol.39 No.-

        Reactive thermal evaporation(RTE) was developed as a new method to deposit hydrogenated amorphous germanium films. RTE was carried out by the evaporation of high purity polycrystalline germanium in an atmosphere of hydrogen plasma produced by high voltage AC discharge of molecular hydrogen. Electrical conductivity and its annealing behavior, electron probe micro-analyzer and scanning electron microscopy were used to characterize the samples. Optimal conditions of sample preparation (from electronic point of view) were determined to be substrate temperature of 200℃ and hydrogen pressure of 1 Torr. Crucible type was proved to have an influence on the sample properties. The sample prepared at the optimum conditions shows the activated type conduction above room temperature.

      • 효소 전처리 BCTMP 시트의 노화 거동

        양봉숙,김형진,강규영,조병묵,오정수 동국대학교 생명자원과학대학 연습림 2000 연습림논문집 Vol.- No.6

        It was generally known that the aging treatment of paper is accompanied with the reductions in physical and optical properties of individual fibers and sheet. In particular, the paper prepared with mechanical pulps occurs the yellowing of sheet, during aging, due to the absorption of light or temperature, and finally has limitation in widely applicable functions of paper. The aging behaviors of paper can be discussed with three groups of factor. One is considered to external factors, like heat, light and moisture. Another is commented with environmental factors, like oxygen, nitrogen, sulfur, and other air pollutant materials. The other is explained by internal factors, like pulp types, lignin contents, and so on. In this paper, the aging behaviors of paper prepared with BCTMP were studied in order to know how to affect in physical and optical properties of paper. For modification of fibers properties, a commercial enzyme was pretreated in the slurry of BCTMP, before handsheet-making. Sheets were aged by accelerated heat treatment. The comparisons were carried out in mechanical strength properties and color reversions. Aging treatments were resulted in higher brightness reductions, in enzyme pretreated paper.

      • Blumlein 전송회로에 의해 선전리되는 질소레이저의 동작특성 연구

        양준묵,추한태,이봉연,이치원 충남대학교 1990 忠南科學硏究誌 Vol.17 No.2

        The design and construction of nitrogen laser preionized with a Blumlein transmission line circuit is described. For the power supply, we have used a pulse type high voltage power source that can be produce 10 joule energy in a pulse. The condition of maximum output power is observed at N_2 gas pressure of 100 torr, spark gap distance of 6.0 mm, repetition rate of 30Hz with preionization, and the stability increases by 0.7%. The maximum increment of output power is achieved at pressure of 200 torr when preionization is used. Finally we can increase the output power by approximately 60% by using this work, and the E/P value is 133 V㎝^(-1) torr^(-1).

      • 생쥐의 骨髓細胞에 대한 Aminopterin 과 Amethopterin의 細胞遺傳學的 影響

        양재섭,강봉석,최명철,김길웅 대구대학교 기초과학연구소 1987 基礎科學硏究 Vol.4 No.-

        Aminopterin and amethopterin(Methotrexate; MTX) are antifolic drugs and anti-tumour agents, which inhibit DNA biosynthesis, were previously known to have mutagenic effects on various mammalian cells. Mutagenecity and toxicity of these agents have been determined by various methods. In the present study, effects of two anti-tumour agents on cultured mouse bone marrow cells were analyzed by observing chromosome aberrations and mitotic index. The results of the present investigation were as follows; 1. The chromosome aberrations analyzed were mainly chromosome gaps and breaks, chromatid gaps and breaks. In the Group-1 (treated for 8 hours), chromosome aberrations were not shown and it seems that mutagenic actions of anti-tumour agents were not aroused due to the short period of culture and the other culture conditions. However, in the Group-2 (treated for 24 hours), as the concentrations of antifolic compounds were increased, chromosome aberrations were increased. 2. In mitotic index, the Group-I treated with aminopterin and amethopterin showed marked inhibition in the mitotic index(O. 6% in aminopterin, 0.9% in amethopterin) at the high concentrations, compared with that of control (5. 2%). Both aminopterin and amethopterin showed a dose-dependent reduction of mitotic index. In the Group-2, each group treated with two antifolic compounds showed no marked differences in the mitotic index. compared with that of control. 3. Aminopterin was a more potent agent for induction of chromosome aberration than amethopterin.

      • 시판된장의 숙성정도 예측을 위한 전자코의 적정조건

        양영민,노봉수,이택수 서울여자대학교 자연과학연구소 1997 자연과학연구논문집 Vol.9 No.-

        본 연구는 된장의 숙성 정도를 6개의 metal oxide 센서가 내장된 휴대용 전자코를 이용하여 예측하고자 하였다. 15℃에서 숙성시킨 시판된 장은 60일 정도에 감도가 급격히 떨어지기 시작해 그 이후로는 거의 변화가 없으며 15℃에서 숙성하다가 33일부터 25℃로 숙성 온도를 달리 하여 숙성시킨 된장은 38일부터 감응도가 급격히 떨어지기 시작해 그 이후에는 거의 일정하였다. 센서 감응도의 기울기와 상관계수를 비교해 보면 15℃에서 숙성시킨 된장보다 25℃에서 숙성시킨 된장이 센서 감응도 변화량, 상관계수값 모두 크고, 6개의 센서 중에서는 #2, #4이 가장 민감하였다. This study is to predict fermentation time of commercial soybean paste by a electronic nose that has six metal oxide sensors. #2 and #4 sensors were more sensitive to volatile components of soybean paste than any other sensors. The sensitivity of the electronic nose to a commercial soybean paste was rapidly reduced after 60 days at 15℃ and not too much changed thereafter. It was also reduced after 38 days when temperature was changed from 15℃ to 25℃ after 33 days. The correlation between sensitivity of sensor and fermentation time was evaluated. The correlation coefficient and changes of sensitivity at 25℃ was higher than that at 15℃

      • KCI등재

        정상교합자와 골격성 Ⅲ급 부정교합자의 경추골성숙도에 관한 연구

        양규호,최남기,최봉선,이영준,류선열,김선미 大韓小兒齒科學會 2004 大韓小兒齒科學會誌 Vol.31 No.1

        정상교합자와 골격성 Ⅲ급 부정교합자간의 성장 정도에 차이가 있는지를 평가하기 위해 8-12세 여자를 대상으로 하여 진단 석고 모형과 측모두부방사선사진을 기준으로 정상교합자 172명 , 골격성 Ⅲ급 부정교합자 191명 총 363명을 분류하여 연구를 시행하였다. 경추의 하연의 만곡도와 수직·수평 길이의 비를 측정해서 연령이 증가함에 따른 변화를 분석하여 다음과 같은 결론을 얻었다. 1. 연령이 증가함에 따라 제2~6경추의 하연의 만곡도는 정상교합자와 골격성 Ⅲ급 부정교합자 모두에서 일정하게 증가하였다. 2. 연령이 증가함에 따라 제3~6경추의 수직·수평 길이의 비도 정상교합자와 골격성 Ⅲ급 부정교합자 모두에서 일정하게 증가하였다. 3. 제2~6경추의 하연의 만곡도와 제3~6경추의 수직·수평 길이의 비에서 정상교합자와 골격성 Ⅲ급 부정교합자간의 경추골성숙도 차이를 조사한 결과 통계적으로 유의한 차이를 보이지 않았다. 이상의 결과에서 정상교합자와 골격성 Ⅲ급 부정교합자간의 경추골성숙도를 비교했을 때 유의한 차이를 보이지 않았으므로 성장에 차이가 없음을 시사하였다. This study was to evaluate and compare differences of the cervical vertebral skeletal maturity of normal occlusion and skeletal Class Ⅲ malocclusion. Normal occlusion (172 girls) and skeletal Class Ⅲ malocclusion(191 girls) were classified according to diagnosis stone model and lateral cephalogram of Korean girls aging from 8 to 12 years. The concavity of inferior border, vertico-horizontal ratio of cervical vertebrae were observed and measured according to age. Differences of the cervical vertebral skeletal maturity were evaluated. The results were as follows : 1. The concavity of inferior border of the 2nd to 6th vertebrae of normal occlusion and skeletal Class Ⅲ had uniformly increased with age. 2. The vertico-horizontal ratio of the 3rd to 6th vertebrae of girls with normal occlusion and skeletal Class Ⅲ had uniformly increased with age. 3. There was no significant difference in cervical vertebral skeletal maturity between normal occlusion and skeletal Class Ⅲ malocclusion in the concavity of inferior border of the 2nd to 6th vertebrae and in the vertico-horizontal ratio of the 3rd to 6th vertebrae. The results in the study indicate that there is no significant difference of cervical vertebral skeletal maturity between girls with normal occlusion and skeletal Class Ⅲ malocclusion.

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