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      • 南海沿岸地方의 溫量指數 및 추위指數 分布의 硏究

        金仁湖,成正秀 慶尙大學校 기초과학연구소 1986 基礎科學硏究所報 Vol.2 No.-

        農作物을 비롯한 모든 植物의 生育에는 지속적인 필요 熱量의 공급이 요구됨으로 적당한 氣溫의 장기간 유지가 있어야 한다. 특히 生育에 필요한 온도는 生育 期間의 口平均氣溫의 總合으로 나타내는 積算溫度가 있으나, 넓은 지역의 生育分布를 조사할 때는 결과적으로 局地的인 작은 變化가 제거되므로, 검토하기가 용이하고 실제에 가까운 결과를 나타낼 수 있는 溫量指數를 代用하며, 그 補助로서 추위指數를 흔히 쓰고 있다. 本 硏究에서는 우리나라의 南海沿岸에 속하고 있는 20個地點의 氣象觀測所에 의하여 1970年 1月부터 1983年 12月까지(數個 地點은 비교적 短期 觀測値를 資料에 의거 利用했음)에 걸쳐 觀測된 月平均氣溫의 平均値를 각각 算定하고(그림-1), 各地點의 季節別 平均氣溫 分布(그림-2,3,4 및 5)를 考奈하였으며, 이를 基礎資料로 하여, 式(1)과 (2)에 의하여 各 地點에 대한 溫量指數와 추위指數를 그림 (6)과 같이 구하였다. 溫量指數의 分布는 대체로 약 100∼118℃에 이르며, 全地點에 대한 平均分布는 약 108.5℃ 가량을 나타냈으며, 특히 이러한 分布는 南海沿岸地方이 氣候學的 特性面에서 暖帶性 氣候帶에 속하며, 照葉樹林帶의 植物帶를 이루고 있음을 類推할 수 있게 하였고, 한편 溫量指數의 補助指數인 추위指數의 分布는 대체로 약 -4∼14℃에 이르며, 全地點의 平均은 약 -9.1℃ 가량을 보였고, 最寒月은 1月中으로서 平均氣溫이 약 0.6℃를 나타내었다. 이러한 結果는 旣히 硏究報告된 바와 대체적으로 잘 一致됨을 알 수 있다. 특히 溫量指數는 濕潤氣候下에 있는 森林帶의 分布 硏究에 有用한 指數로 널리 알려지고 있으며, 農作物과 氣溫과의 관계에서 따뜻한 정도를 나타내는 指數이므로 農作物의 生産力을 나타내는 指數가 될 수 있어서 農作物을 비롯한 植物의 生育分布 硏究에 기여 됨이 있을 것으로 思料한다. 끝으로 本 硏究遂行 過程에서 많은 基礎資料의 統計的 處理에 手苦해 준 慶尙大學校 農科大學의 金君渡군께 感謝를 드리는 바이다. This study was carried out to estimate the index of warmth and coldness of twenty-six sites in south coast of Korea. The most of all meteorological materials of monthly mean air-temperature used had been measured during fourteen years(Jan. 1970∼Dec. 1983) by the Meteorological Offices and Auxiliary Stations as shown Table 1. From the results of this study, the range of the warmth and coldness indices were distributed about 100℃∼118℃ and -4℃∼-14℃ respectively as shown Fig. 6. And then, the mean value of warmth and coldness indices in south coast of Korea were about 108.5℃ and -9.1℃ respectively.

      • 生物敎科書에 나오는 植物種類와 鎭海市 初·中·高等學校 庭園樹木과의 比較

        姜東萬,鄭宇珪,成敏雄 慶尙大學校 기초과학연구소 1989 基礎科學硏究所報 Vol.5 No.-

        학교 정원의 교재원화를 위한 기초조사로써 1984년 3월부터 1988년 10월까지 국민학교 자연, 중학교 과학, 고등학교 생물 교과서에 출현하는 관다발식물과 진해시내 19개 초·중·고등학교의 정원에 식재되어 있는 수목의 종류와 빈도 등을 조사한 결과는 다음과 같았다. 1. 생물 교과서에 출현하는 전체 관다발 식물은 91과 182속 192종 21변종 1품종 총 214종이었다. 이들 중에는 국민학교 33종 중학교 63종 고등학교에 208종이 포함되었다. 생물 교과서에 나오는 목본 식물은 전체 37과, 58속, 68종, 8변종 1품종 총 77종이었고 이들 중에는 국민학교 8종, 중학교 22종, 고등학교에 73종이 포함되었다. 2. 생물 교과서에 나오는 관다발 식물의 총빈도는 1576이고 국민학교 238, 중학교 268, 고등학교 1074였다. 종당 평균 출현회수는 전체 74회, 국민학교 7.2회, 중학교 7.2회 고등학교 2.5회였다. 3. 진해시내 19개 학교 정원에 식재되어 있는 수목은 전체 53과 96속 126종 33변종 6품종 총 165종이었고 10개 국민학교에 139종, 4개 중학교에 77종, 5개 고등학교에 114종이 식재되어 있었다. 4. 10개교에 식재된 종의 총빈도는 1019이고 종당 평균빈도는 6.2였다. 전체 학교에 식재된 수목은 개입깔나무, 가이쓰카 향나무, 둥근향나무, 장미, 회양목, 무궁화, 사철나무, 개나리의 8종이고 은행, 편백, 서리화백, 측백, 두꺼운 잎유카, 버짐나무, 왕벚나무, 꽝꽝나무, 단풍나무, 동백, 아왜나무 11종이 빈도 80%이상이었다. 5. 19개교의 총개체수는 24531주, 학교당 평균 개체수는 1291주, 국민학교 1562주, 중학교 1445.5주, 고등학교 625.8주였다. 종당 평균 개체수는 전체학교에서 148.7주, 국민학교 112.4주, 중학교 75주, 고등학교 27.4주였다. 1000주 이상 식재된 수목은 측백(4075), 개나리(1986), 사철나무(1915), 연산홍(1730), 무궁화(1509), 편백(1295), 둥근향나무(1112), 회양목(1043)이었고 이들 8종이 전체의 43.2%를 차지하였다. 나자식물이 종수에 있어 21.2%, 개체수에 있어 43.0% 였고 상록수가 종수에 있어 43.0%, 개체수에 있어 74.2%였다. 6. 19개교의 총종수는 165종이고 학교당 평균 종수는 53.4종이었고 국민학교 59.8종, 중학교 37.2종 , 고등학교 53.6종이었다. 가장 종수가 많은 학교는 진해 고등학교로 84종이었고, 가장 적은 학교는 진해종합고등학교로 21종이었다. 7. 진해시 학교 정원에 식재된 수목 165종중 생물 교과서에 나오는 수종은 46종으로 관다발 식물의 21.0%, 수목의 59.7%였다. 그러나 생물 교과서에 나오는 식물중에서 학교 정원에 식재되어 있는 학교당 평균 종수는 국민학교 4.6종, 중학교 3.2종, 고등학교 12종이었다. 이 수치는 생물 교과서에 나오는 목본식물의 수에 각각 57.5%, 14.1%, 16.4% 였고, 관다발식물의 수에 비해 각각 13.9%, 5.1%, 5.8%에 해당하였다. 8. 진해시 학교 정원에 식재된 수목은 교육적 기능보다는 관상 위주로 식재되었고 침엽수와 상록수가 지나치게 많이 식재되어 적절한 조정이 필요하다. This paper was carried out to investigate the kinds of vascular plants and their frequencies appearing in the books of the elementary school; "wise life" and "nature". in the books of the high school; "biology". These investigations were compared the kinds of the garden trees and their frequencies of 10 elementary. 4 middle. and 5 high schools and total 19 schools in chinhae city and the vasular plants writtern in the biology text books as a basic research for the teaching gardenization of school gardens from March. 1984 to August. 1988. The results were summarized as follows: 1. The biology text books appeared total 214 kinds of the vascular plants. According to classification, they were 91 families, 182 genera, 192 species, 21 varieties , and 1 forma. These consisted of 33 kinds in the books of the elementary school; "wise life" and "nature " , 63 kinds in the books of the middle school; "general science", and 208 kinds in the books of the high school; "biology". In all the biology text books the woody plants were total 77 kinds or 37 families, 58 genera, 68species, 8 varieties, and 1 form. Among them, the woody plants of 8 kinds in the elementary school, 22 kinds in the middle school, and 73 kinds in the high school were contained. 2. Total frequency of vascular plants appearing in the biology text books was 1576 times. Among them, the vascular plants of 238 times in the elementary school, 268 times in the middle school, and 1074 times in the high school appeared. Average frequency per species was 74 times in total species of all the biology text books, 7.2 times in the wise life and nature text books of the elementary school, 7.2 times in the general science text books of the middle school, 2.5 times in the biology text books of the high school. 3. The woody plants in school garden in Chinhae city were 165 kinds. According to classification, they were 53 families, 96 genera, 126 species, 33 varieties, and 6 forma in the gardens of total 19 schools. The woody plants of 139 kinds in the gardens of 10 elementary schools, 77 kinds in the gardens of 4 middle schools, and 114 kinds in the gardens of 5 high schools were planted. 4. Total frequency of kinds planted in 19 schools and average frequency per species was 1019 times 6.2 times. The woody plants appearing in the garden of schools were 8 kinds of Cedrus deodara, Juniperus chinensis var. kaizuka, J. chinensis var. globosa, Rosa hybrida. Puxus microphylla var, koreana, Hibiscus syriacus, Euonymus japonca, and Forsythia koreana, 11 kinds of Ginkgo biloba, Chamaecyparis obtus, C. pisifera var. squarrosa, Thuja orientalis, Yucca recurrifolia, Platanus orientalis, Prunus yedoensis, Ilex crenata var. microphylla, Acerplantanum var. palmatum, Camella japonica, and Viburnum aieabuki were 80% or over in frequency appearing in the gardens of 19 schools. 5. Total individuals appearing in the gardens of 19 schools were 24531 trees. Average individual number per school was 1291 trees in all the schools, 1562 trees in the elementary schools, 14455 trees in the middle schools, and 625.8 in the high schools. Average individual number per species was 148.7 trees in all the schools, 112.4 trees in the elementary schools, 75 trees in the middle school and 27.4 trees in the high schools. The greatest individual number among 19 schools in Chinhae city was 3994 in Daeya elementary school. The smallest individual number among 19 schools in Chinhae city was 271 in Chinhae comprehensive senior high school. 6. The woody plants appearing 1000 trees or over in the gardens of 19 schools were T. orientalis(4075), F. koreana(1986), E. japonica(1915), Rhododendron obusum(1730), H.syriacus(1509), C. obtus(1294), J.chinensis var. globosa(1112), and P. microphylla var. koreana(1043). These 8 species were 43.2% of total individual number. The ever green trees appeared 43.0% in the species numbers and 74.2% in the individual number. 7. The woody plants in all the school garden were 165 species in total. Average species number in each school were 53.4 species in total schools, 59.8 species in the elementary schools, 37.2 species in the middle schools, and 53.6species in the high schools. The greatest species number among 19 schools in Chinhae city was 84 species in Chinhae senior high school. The smallest species number among 19 schools was 21 species in Chinhae comprehensive senior high school. The woody plants appearing in the biology text books among 165 species growing in the school gardens in Chinhae city were 46 species. These species numbers were under 21.0% of vascular plants and 59.7%of woody plants appearing in the biology text books. These species number of the woody plants growing in 19 school gardens among the woody plants appearing in the biology text books were 4.6 species in the elementary schools, 3.2 species in the middle schools, and 12 species in the high schools. These species numbers were under 57.7%, 14.1%, and 16.4% in the numbers of woody plants of the biology text books and 13.9%, 5.1% and 5.8% in the number of vascular plants of the biology text books. 8. The authors could find out that the plants planted in the school garden were not suitable to use for the teaching material plants because of planting only the woody plants of school garden for landscape rather than plants for teaching materials. Therefore some of the improvement for the teaching material garden of school were issused in the discussion.

      • 正陽湖 沿岸生態系의 基礎生産

        吳炅煥,成敏雄 慶尙大學校 기초과학연구소 1987 基礎科學硏究所報 Vol.3 No.-

        慶南 陜川郡 大陽面 所在 正陽湖에서 水生管束植物의 生活刑에 따른 基礎生産을 測定하고 湖沼 전체의 年純生産을 調査하여 다음과 같은 結果를 얻었다. 1. 挺水植物인 줄(Zizania latifolia)의 順基礎生産性은 生體植物量 增加 690g m^-2, 枯死體量 增加 297g m^-2 및 枯死體分解量 58g m^-2를 합친 1,045g m^-2이었으며, 生長期間 中 太陽에너지 固定效率은 1.68%였다. 2. 浮水植物인 마름(Trapa spp.)은 浮葉叢 直徑이 증가함에 따라 水面위의 密度가 감소되었고, 順基礎生産性은 生體植物量 增加 322g m^-2와 枯死體量 增加 208g m^-2를 합친 530 m^-2이었으며, 生長期間中 太陽에너지 固定效率은 0.78%였다. 3. 沈水植物의 順基礎生産性은 14g m^-2이고 太陽에너지 固定效率이 0.02%로서 세 生活形中 가장 낮았다. 4. 각 生活型別 分布面積과 順基礎生産量으로부터 正陽湖 전체의 年間純生産量을 계산하면 줄이 404.9ton으로 전체 生産量의 70.2%를 차지하였고, 마름 167.3ton(29.0%) 및 沈水植物 4.4ton(0.8%)이었다. 따라서 正陽湖 전체에서 水生管束植物의 年純生産量은 576.6ton이었다. Primary productivity and annual net production of the three life forms of the aquatic vascular plants were studied in the littoral zone lake Jungyang, Hapchun-gun, Gyeongsangnam-do, Korea from April to October in 1986. Net primary productivity of Zizania latifolia was 1,045 gm-2 including living biomass, dead standing crop, and disappearance. And net conversion efficiency of PhAR(photosynthetically ative radiation) of Z. latifolia was 1.68% during the growing season. Rosette density of Trapa spp. was decreased with the increase of rosette diameter. Net primary productivity of Trapa spp. was 530 gm-2 and the net conversion efficiency of PhAR was 0.78% during the growing season. Net primary productivity of the submersed plants was 14 gm-2 and the net conversion efficiency of PhAR was 0.02%. It was estimated that total annual net primary production of the aquatic vascular plants in lake Jungyang was 576.6 ton, which was composed of 404. ton(70.2%) of Z. latifolia, 167.3 ton(29.0%) of Trapa spp., and 4.4 ton(0.8%) of submersed plants.

      • Identification of Five Chitinase Isozymes from S. marcescens

        Hwang, Jae Ryoung,Gal, Sang Wan,Lee, Kyeong Ai,Shin, Yong Chul,Cho, Moo Je,Lee, Sang Yeol 慶尙大學校 기초과학연구소 1991 基礎科學硏究所報 Vol.7 No.-

        SDS 존재하에서 전기영동을 한 후, substrate activity staining을 한 결과, S. marcescens는 5가지의 chitinase isozyme을 생성함을 알아내었다. 이 효소는 inducible enzyme으로서, 30℃에서 7일간 진탕배양하였을 때 1.5% chitin을 첨가한 LB-배지에서 얻은 효소활성이 chitin을 첨가하지 않은 배지에서 얻은 것보다 약 7배의 효소활성의 증가를 보였다. Chitinase를 최대로 생성시키는 조건에서 S. marcescens를 배양한 후 regenerated chitin을 이용한 친화성 chromatography를 행하여, 이 배양상등액으로부터 5가지의 chitinase isozyme를 분리하였으며 이들의 분자량이 58, 47, 43, 37 및 21 kd임을 확인하였다. 충분히 세척한 chitin column으로부터 chitinase를 elution시키는 방법으로, pH3.3인 완충액을 사용하였을 때, 5가지 chitinases가 모두 용출되었으며, pH를 2.0인 완충액으로 바꾸어 용출시켰더니 5가지 중 분자량이 58, 47, 43 kd인 3가지 chitinase가 더 회수되었다. 또한 Chitinases 의 pH에 대한 안정성을 실험한 결과 S. marcescens가 분비하는 chitinases는 산성조건에서 매우 불안전한 chitinases와 비교적 안정한 chitinase의 두가지 group이 존재함을 알 수 있었다. S. marcescescens KCTC2172 produced five extracellular chitinases that were involved in chitin degradation. These enzymes were identified as chitinase isozymes by substrate activity staining in SDS-PAGE gel after removal of SDS, because chitinases were resistant to SDS and existed as monomeric proteins. Their apparent molecular weights obtained by SDS-PAGE were 58, 47, 43, 37, and 21kd. The chitinase activities were induced about seven folds by the addition of 1.5% chitin to LB-medium compared with those obtained without chitin, and the induction was dependent on the various forms of chitin. Chitinases were purified using the regenerated chitin column by successive pH changes of elution buffer. When the column was eluted with enough volume of pH 3.3 buffer, five chitinase isozymes were eluted. However, three of them whose molecular weights were 58,47 and 43 kd were further eluted by the pH changes of elution buffer from pH 3.3 to 2.0 Considering the pH dependent stability of chitinases, it was known that S. marcescens produced two groups of chitinase isozymes; One is resistant and the other is very sensitive to acidic conditions, at pH below 3.3.

      • Host-Guest Interactions Between Macrocycles and Methylsubstituted Anilinium Ions

        Lee, Shim Sung,Jung, Jong Hwa,Chang, Duk Jin,Lee, Bu Yong,Kim, Si-Joong 慶尙大學校 기초과학연구소 1991 基礎科學硏究所報 Vol.7 No.-

        The binding characteristics and analytical applications of anilinium ion complexes with 18-crown-6 were studied by polarography and NMR. First, the electrochemical reduction of the 10 species of mono and dimethylsubstituted anilinium ion complexes with 18-crown-6 as host in methanol are examined. The addition of 18-crown-6 to anilinium guest solution the polarographic waves remain well defined but shifted toward more negative potentials. indicating the complex formation. The values of formation constants, log K for 10 species of methylsubsituted anilinium ion complexes with 18-crown-6 varies form 2.7 to 4.8 in methanol at 25℃. The stability order of complexes for 18-crown-6 is anilinilum>4-methyl>3.4-dimethyl>3-methyl>3.5-dimethyl>2.4-dimethyl>2.5-dimethyl>2.3-dimethyl>2-methyl>2.6-dimethylanilinium ion. The steric hindrance shows significant effect. Second, Proton NMR was used to elucidate their interaction characteristics. From the results of so called NMR titration techniques. the behaviors of binding sites on complexation, and the stoichiometry and stability order of complex were obtained. And the later results show the satisfactory agreement with the quantitative values obtained by polarography. Finally, the individual determinations of anilinium ion mixtures were also accomplished by addition of 18-crown-6. In some mixtures of methyl or dimethylanilinium ions the reduction peaks of differential pulse method appeared into one unresolved wave attributed to the small difference of half-wave potential.ΔE_y2. In the presence of 18-crown-6, the polarographic waves were resolved into individual maxima because of the shift toward more negative direction by the difference of selectivity of anilinium ions with 18-crown-6. It may be concluded that quantitative analysis of methylanilinium ion mixture make possible because the half-wave potential shift by the selectivity difference due to the steric hindrance between methyl group and 18-crown-6 on complexation.

      • Serratia marcescens Nuclease의 Escherichia coli에서의 분비

        신용철,이상열,김기석 慶尙大學校 기초과학연구소 1991 基礎科學硏究所報 Vol.7 No.-

        Serratia marcescens가 세포외 배지 중으로 분비하는 nuclease 유전자를 포함하고 있는 pNUC4 플라스미트를 E. coli에 transformation하여 E. coli에서의 분비에 관하여 연구하였다. E. coli에서 Serratia nuclease 활성이 세포내 periplasm 세포밖 배지 중에서 각각 16.6%, 54.2%, 29.2%로 측정되었다. 배양시간에 따라서 nuclease는 면적 periplasm에 축적되었으며 점차적으로 세포외 배지 중으로 분비되었고 세포내에서는 낮은 효소활성이 점차 증가되는 경향을 보였다. 분비기작을 연구하기 위해서 에너지대사 저해제인 sodium azide, signal peptide processing 저해제인 procaine, 단백질 합성 저해제인 chloramphenicol을 처리하였다. sodium azide 존재시 peripasmic nuclease 환경이 줄어들고 세포외 nuclease 활성이 증가되는 경향을 보였으며 procaine과 chloramphenicol을 처리했을 때도 이와 비슷한 결과를 보였다. 이 결과로 부터 E. coli에 있어 Serratia nuclease의 분비는 energy-dependent process 이면서 precursor processing이 필요한 inner membrane 통과와 이것과는 무관한 outer membrane 통과로 이루어져 있는 것으로 사료되었다. Secretion of Serratia marcescens nuclease by E. coli harboring pNUC4 was investigated. 29.2, 54.2 and 16.6% of total nuclease were observed in culture medium, periplasm, and cytoplasm of E.coli, respectively. To investigate the secretion mechanism of Serratia nuclease by E. coli, secretion kinetics of nuclease was examined in the presences of sodium azide, an energy metabolism inhibitor, procaine, an exoprotein processing inhibitor; and chloramphenicol, a protein synthesis inhibitor. In the presence of sodium azide, periplasmic unclease was gradually decreased and the extracellular nuclease was linearly increased according to the incubation time. Similar results were obtained in presences of procaine and chloramphenicol. From these results, we concluded that two transport processes are involved in nuclease secretion: secretion of nuclease through the inner membrane is occurred by an energy-dependent process and probably requiring precusor processing: secretion of nuclease through outer membrane does not require energy, de novo protein synthesis, and precursor processing.

      • Large Deviation Probabilities and Related Erdo¨s-Re´nyi Laws

        Choi, Yong Kab 慶尙大學校 기초과학연구소 1985 基礎科學硏究所報 Vol.1 No.-

        이 論文에서는, 確率變數의 數列 {X_n:n=1,2,…}에 의해 이루어진 實數값을 취하는 確率變數의 一般化된 增分數列 {T_n,k:n=0,1…; K=1,2,…}가 주어질 때 大偏差定理와 이에 관련된 Erdo¨s-Re´nyi 法則의 完全한 형태가 이 二重數列에 대해서 各各 얻어짐을 보여 준다. In this paper, we show that when a generalized increment sequence {T_n,k:n=0,1…; K=1,2,…} of real-valued r.v.s constructed by the sequence {X_n:n=1,2…} of r.v.s is given, the full form of Large deviation theorems and related Erdo¨s-Re´nyi laws is obtained for this double sequence, respectively.

      • On Extensions of Continuous Functions

        Yoon, Sam-Youl,Park, Sang-Ho 慶尙大學校 기초과학연구소 1991 基礎科學硏究所報 Vol.7 No.-

        본 논문에서 위상공간 X와 환 C(S)=[f|f:X→R은 연속함수}사이의 관계를 연구하고, 이를 바탕으로 이미 잘 알려진 정규공간에서 Tietze의 확장 정리를 증명하여 보았다. 그리고, 일반적인 위상공간 X의 부분공간 S가 C-embedded이기 위한 조건을 연구하여, 다음과 같은 결과를 얻었다. 1. 완전정칙공간 X에서의 모든 compact 집합 S는 C-embedded이다. 2. X와 Y가 위상공간이고 S⊂X라고 하자. h|s가 open injection인 함수 h∈C(X,Y)가 존재할 때 h(S)가 h(X)에서 C-embedded일 필요충분조건은 h(S)가 h(X)에서 C-embedded이면 S는 X에서 C-embedded이다. 3. X와 Y가 위상공간이고 S⊂X라고 하자. open injection인 함수 h∈C(X,Y)가 존재할 때 S가 X에서 C-embedded일 필요충분조건은 h(S)가 h(X)에서 C-embedded이다. 4. X가 위상공간이고 Y는 정규공간이고, S⊂X라고 하자. S가 Y의 폐집합 H와 위상동형이 되게 하는 h∈C(X,Y)가 존재하면 S는 X에서 C-embedded이다. 단, 여기서 C(X,Y)={h|h : X-→는 연속함수}이고 h|S는 h의 S에서 제한 사상이다. In this paper, we study relations between a topological space X and the ring C(X) of all real valued continuous functions on X, in particular, C-embedding, C-embedding and Tietze's extension theorem. Also, we obtain some sufficient conditions for a subset to be C-embedded.

      • 전이 금속 산화물에 대한 원적외선 방사체의 방사 특성

        손만식,이용주,백우현 慶尙大學校 기초과학연구소 1991 基礎科學硏究所報 Vol.7 No.-

        In order to calculate the radiation characterization of Cr_2O_3, MnO_2, Fe_2O_3, C_0O, NiO and CuO transition metal oxides, we calculated spectral emissive power(SEP), integral emissive power(IEP), percentage of integral emissive power, regional emissivity, and total emissivity in the Far Infrared radiator at 523K. As a result, the IEP increased Fe_2O_3[MnO_2[C_0O[Cr_2O_3[NiO[CuO, the regional emissivity increased MnO_2< C_0O<Fe_2O_3<MnO_2<NiO Cr_2O_3<CuO, the total emissivity increased Cr_2O_3 Fe_2O_3<MnO_2<C_0O<NiO<CuO, and the percentage of integral emissive power increased C_0O<CuO<NiO<Fe_2O_3<MnO_2<Cr_2O_3 in the Far Infrared radiator at 523K.

      • 차지법-드라이 클리닝에 의한 견직물의 세척성

        윤인주,이정숙 慶尙大學校 기초과학연구소 1991 基礎科學硏究所報 Vol.7 No.-

        The effects of charge system on the removal of water soluble and oily soils from silk fabrics were studied. The charge systems used in this experiments were Light mate DX in petroleum solvent and Light Park MK in perchloroethylene. The detergency was examind with water/detergent ratio and concentration of dry soaps and solvent, respectively. 1. In the case of condition charged with detergents without water, as the concentration of Light Mate DX in petroleum solvent was increased, the detergency of water soluble soils was improved. 2. In the case of condition charged with detergents with water, as water/detergent ratio was increased, the detergency of water soluble soils was improved. Petroleum solvent was superior to perchloroethylene in the detergency as water/detergent ratio was low. 3. In the case of condition charged with detergents without water, the detergency of oily soils of Light Park MK in perchloroethylene was higher than that Light Mate DX in petroleum solvent. The detergency was influenced by characteristics of solvents. The order of the detergency in dry soap concentration was 1.5>1.0>2.0>0.5(%) 4. In the case of condition charged with detergents with water, as water/detergent ratio was increased, the detergency of oily soils in petroleum solvent was decreased. In perchloroethylene, the detergency was not so much affected by water/detergent ratio.

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