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      • N-thioaroylformamidine과 ketene간의 고리화반응에 관한 이론적인 연구

        유근배 청주대학교 산업과학연구소 2007 産業科學硏究 Vol.24 No.2

        PM3 semiempirical MO calculations were performed to investigate the mechanism and relative reactivety for cycloaddition reactions of N-thioaroylformamidine(TFA) well kettle. Reactions of TFA with H-substeluted kettle were occurred with neutral electron demand, but those of TFA with Ph-substitutes kettle were - occurred with inverse electron demand. These relative reactivelies - were determined by FMO energy gap of TFA(LUMO)-ketene(HOMO)interaction and were then partially accord with experimental trens(yield). However theoretical activation barriers, which were determined from transition states, were in accord well experimental trend in all reactions. Electron witlsrawing group substituted on 4-memberes ring faciwelated the formation of all 4-membered-ring(TS) and thus decreased activation barriers in TS. But Ph-lublteluent interferes with the formation of 4-memberes ring sue to ell lteric hindrance.

      • EPDM을 이용하여 제작된 바이오센서의 전기화학적 특성

        유근배 청주대학교 2012 産業科學硏究 Vol.29 No.2

        A biosensor bound by EPDM solved in toluene has been newly designed and a study of its electrochemical characteristics was carried out. Enzyme source was ground tissue of cabbage root. Volatilization of the solvent made the electrode material possess a mechanical robustness and a speedy signal appearance. And it showed electrochemically irreversible behaviors and a powerful catalytic power(detection limit = 5.0 x 10-5 M, S/N=2). The double reciprocal plot of signal current and substrate concentration was ideally linear and the symmetry factor and exchange current density of the electrode used in this work were 0.16 and 3.61 x 10-5 Acm-2 respectively.

      • 무우의 抽苔 및 開花生理에 關한 硏究

        劉根培 안성산업대학교 1980 論文集 Vol.12 No.-

        무우 主要品種에 있어서 催芽種子의 低溫處理期間 및 播種時期의 差異가 地上部 및 地下部의 生長 및 花芽分化에 미치는 影響에 關하여 硏究하고저 1980年 4月∼11月까지 걸쳐 "晋州大坪무우" "40日무우" "서울봄무우" "赤丸20日무우" "太白무우" 및 "宮重總太무우"의 6品種을 供試하여 「實驗하고 또 寒冷絲로 2겹遮光, 1겹遮光, 無遮光하여 生育에 미치는 影響을 硏究하고 花芽分化의 程度 및 花芽分化와 生育과의 關係를 遮光의 程度와 聯關시켜 比較硏究함으로서 花芽分化에 미치는 程度의 影響을 複合的으로 比較分析코저 晋州大坪무우와 宮重무우의 2品種을 供試하여」 京畿道 安城農業專門大學 實習圃場에서 實驗을 行하였는데 그 主要結果를 物約하면 다음과 같다. 實驗Ⅰ 1. 日本무우 "40日무우"는 高溫期의 播種에는 잘 適應하여 地上部 및 根部의 發育이 他品種에 費하여 좋았으나 抽播時 播種時期가 지나치게 늦어지면 生育이 顯著히 지연되는 特性을 보였다. 2. 播種後의 經過日數를 基準으로 播種期 및 品種에 따른 生育을 比較할때 秋播適期에 屬하는 8月23日의 播種에서 가장 地下部의 肥大가 빠르게 進行되었으며 또한 地上部 根部의 比率이 가장 높았다. 3. 品種에 따른 花芽分化까지의 所要日數를 比較하면 東洋무우에서는 "晋州大坪무우"가 가장 빨랐으며 다음이 "40日무우" "太白무우" "宮重總太무우"의 順이었다. 特히 "晋州大坪무우"에서는 根部의 肥大가 전혀 이루어 지지 않는 경우는 많았다. 4. 西洋系무우인 "赤丸20日무우"는 早期春播時 花芽分化 및 抽苔가 一部 進行되였으나 東洋系무우에서는 달리 根部의 肥大가 大部分 正常的으로 進行되었다. 實驗Ⅱ 5. 催芽種子의 低溫處理期間의 長短은 低溫에 敏感하게 反應하는 "晋州大坪무우" "40日무우"等의 品種에서는 花芽分化까지의 所要日數를 뚜렷이 短縮시키지 못하였다. 6. 自然低溫에 感應하여 花芽分化하는 品種特有의 習性은 大體的으로 種子低溫處理에 感應하는 習性과 類似하였다. 7. 低溫處理效果가 比較的 적게 나타나는 "赤丸20日무우" "서울봄무우"에 있어서는 10日間의 種子低溫處理가 5日間의 低溫處理보다 花芽分化에 이르는 槪體數를 顯著히 增加시켰다. 8. 種子低溫處理期間의 長短은 東洋무우와 西洋무우의 花芽分化 習性의 差異點을 確實하게 보여주었다. 卽 東洋系인 "서울봄무우"의 花芽分化까지의 所要日數는 西洋系인 "赤丸20日무우"에 比하여 低溫處理期間이 길어질수록 短縮되었다. 實驗Ⅲ 9. 무우裁培時, 寒冷絲 被覆은 自然光線을 各各 20% 및 35%減少시켰으며 植物體의 生體重 및 乾物重은 遮光에 의해 顯著히 減少되었다. 10. 植物體의 乾物重/生體重 比率은 遮光處理에 依해 顯著히 減少되었으며 조선무우인 晋州大坪에서 더욱 그 減少 程度가 높았다. 11. 遮光에 依한 生育減少에도 不拘하고 花芽分化 및 抽苔는 거의 影響을 받지 않았다. Studies were conducted to investigate the effect of seed vernalization period and sowing dates on the growth of top and root of radishes (Raphanus sativus L.) Seeds of the leading radish cultivars, 'Jinzudaepyung', '40-day', '20-day', 'taebaek', 'Goongzung Chongtae', and 'Seoul Bommu', were either sown directly in the field at 6 defferent dates in 1980 or Seeds vernalized for 3 different period were sown on the same day in 1980. The experimental results, conducted and obtained at Ansung, Kyunggi-province, can be summarized as follows. 1. The Japanese radish cultivar, '40-day' exhibited some resistance to high temperatures by showing better top and root growth during the summer. However, when sown late in the fall, the growth was apparently in ibited as compared to that of other cultivars. 2. Comparing the growth of 60 days after seeding, better foot growth as well as the low top/root ratio was obtained from the plantings which supposed to be the optimum sowing date. 3. The time required from planting to visible flower bud development varied considerably depending upon the cultivar. 'Jinzudaepyung' showed the earliest flower bud development followed by '40-day', 'Taebaek', and 'Goongzung Chontae: When flower buds were formed early in the developmental stages, 'Jinzudaepyung' showed little or no root developement. 4. Unlike the oriental radish cultivars, the European cv. '20-day' showed considerable root growth even if the flower buds were formed and bolting proceeded. 5. The duration of seed vernalization, 5 and 10 days respectively, ahd little or no effect on the days required for the first inflorescence development in 'Jinzedaepyung' and '40-day' which were sensitive to low temperature. 6. The varietal characteristics of flower bud formation were similar between the plants received natural low temperature exposure and those received seed vernalization. 7. The longer the vernalization period, the higher the flower bud formation in 'Seoul Bommu' and '20-day' which were less sensitive to low temperatures. 8. The duration of vernalization clearly showed the differential response of flower bud formation between European and oriental radish cultivars. More plants of 'Seoul Bommu' showed flower buds as the duration of vernalization increased, as compared to '20-day'. 9. Shading with plastic net cut off the natural sunlight intensity 20% (1 layer) and 35%(2 layers), respectively, shading reduced both fresh and dry weight of 2 cultivars. 10. The radio dry weight to fresh weight was reduced significantly by shading especially in 'Jinzudaepyung' cutivar. 11. The percentage of flower bud differentiated an bolted plant was not influenced by shading treatment.

      • 오이 揷木育苗가 良苗生산과 增收效果에 미치는 影響

        劉根培 안성산업대학교 1972 論文集 Vol.5 No.-

        1. The better quality Seedling with high T/R ratio was obtainod from Seedling. 2. Non etiolated Seeding was Produced by Seeding Cutting. 3. Under the low light intensitf a lot of abventages were resulted from Cutting Seedling than qrdinary Seedling.

      • 몇種類의 플라스틱필름被覆이 오이促成栽培에 미치는 影響

        劉根培 안성산업대학교 1984 論文集 Vol.16 No.-

        We can eat fresh Cucumber at the table all through the year by promotion of growth, and the cultivators more benefitial managerial production through harvesting an selling Cucumbers in short day. I make an experiment on the effect of P.V.C. and Poly in quantity and quality of Cucumbers in order to know the difference between Poly and P.V.C. which are used for this effective promotion of growth. I report it in this thesis. First... In the warm power of P.V.C. and Poly; the lower temperature of P.V.C. had more 0.5℃ to 1.5℃ than that of Poly, and the soil temperature of P.V.C. had more 1℃ to ℃ than that of Poly. Second... The effect of P.V.C. and Poly on the of Cucumber; In the vegetative-weight had 44.26g per a plant and dry-weight had 4.98g per a plant under the P.V.C. In the vegetative-weight had 39.06g per a plant and dry-weight had 4.90g per a plant there fore it is excellent more P.V.C. than Poly Third... The effect of P.V.C. an Poly mulching on the volume of Cucumber; The P.V.C. is very excellenter not only early volume but also total volume than the poly.

      • 박과 菜蔬(Cucurbitaceae gourd family)의 發根生理에 關한 硏究

        유근배 안성산업대학교 1981 論文集 Vol.13 No.-

        박과 菜蔬의 發根 生理에 對하여 生長調節 物質인 IBA處理 濃度에 따른 效果와 環境 要因에 對한 影響을 調査하기 爲하여 園芸科 溫室 및 實驗室에서 調査한 바 그 結果를 要略해보면 大略 다음과 같다. 1. 溫室과 實驗室의 調査 最終日이 달라 環境에 따른 IBA 反應을 正確히 알 수는 없으나 生長調節 物質인 IBA는 品種과 生育 環境에 따라 發根 促進을 爲한 IBA最適 濃度 範圍가 다르게 나타났다. 2. 박과 菜蔬중 오이 수박보다는 박, 신토좌 호박이 IBA 作用에 민감한 反應을 보여 發根 狀態가 良好하였다. 3. 一定한 環境의 實驗室에서 發根된 것은 晝, 夜의 溫度差가 있는 溫室에서 發根된 것보다 發根 開始日이 훨씬 빨랐으며, 뿌리의 狀態에 있어서 實驗室에서는 뿌리가 가늘고 길었으며 溫室에서는 뿌리가 굵고 짧았고, 母根數와 뿌리털은 恒溫室이 훨씬 많았다. 4. 신토좌 호박 生長点 除去한 것과 除去하지 않은 것의 濃度別 發根數 比較는 各 處理 濃度에 따라 差異를 보이나 最終 調査日인 4月 22日 調査에서 發根 平均値를 보면 生長点을 除去하지 않는 것이 發根數가 많았고 發根 狀態가 良好했다. The present experiment was conduced to investigate rooting physiology influenced by IBA and environmental factors on Cucubitaceae vegetables. The results are as follows. 1. Though IBA effect was influenced by differ ent investigation date, most suitable range of IBA conc. differed according to varieties and enviromental factors. 2. Rooting of gourd and Shintozwa pumpkin was more favorable than cucumber and watermelon. IBA effect was more effective in the former crops. 3. Root initiation was fast in cuttings which were kent at constant temperature growth chamber than greenhouse. 4. Rooting number of Shintozwa pumpkin which and removed growing point and non-removed growing point differed according to different IBA conc. treatment. At last investigation time(April 22), very good rooting condition was observed in intact plants.

      • 고추 品種間 弱光 抵抗性에 關한 硏究

        柳根培 안성산업대학교 1982 論文集 Vol.14 No.-

        遮光에 依한 光度의 減少가 고추 品種의 有育 및 共地 特性에 미치는 影響을 硏究하기 爲하여 1982年 遮光 및 無遮光區로 區別하여 調査하였던 바, 以上의 實驗結果를 要約하면 다음과 같다. 1. 開花日數는 새로나 건 82.9日에 比하여 꽈리 풋고추 8.1日, 풋고추가 6.8日 늦었으며, 그외의 品種들은 近少한 差異였다. 2. 果皮 生産量은 새로나 건. 하우스 킹 풋고추가 높았고, 꽈리 풋고추가 낮았다. 3. 草長은 遮光 處理에 依하여 꽈리 풋고추를 除外한 全 品種이 顯貯한 徒長現象을 나타냈다. 4. 1果重의 무게는 새로나 건 고추가 14.5gr으로 무거웠고, 꽈리 풋고추가 6.4gr으로 가장 가벼웠다. 5. 收穫量에서는 꽈리 풋고추가 가장 많았고 다음이 새로나 건 고추였으며, 特히 弱光에 對한 抵抗性이 他 品種보다 높은것으로 나타났다. This experiment was conducted to investigate the effect of shading on the growth and other characteristics of 8 pepper cultivars in 1982. The result obtained can be summarized as follows. 1. Days to forst flowering varied depending upon the cultivars. ‘Saerona-gun’ began to flower 82.9 days after sowing and ‘kwari put’ and ‘put’ flowered 89.7 and 91.0 days after sowing, respectively. 2. Pericarp weight was higher in ‘Saerona-gun’ (14.56 gr) and lowest in ‘Kwari-put’(6.40 gr). 3. Shading accerlated shoot elongation in all tested cultivars. 4. Mean fruit weight was highest in ‘Saerona-gun’(14.56 gr) and lowest in ‘Kwari-put’(6.40 gr). 5. Total yield was highest in ‘Kwari-put’ followed by ‘Saerona-gun’. The shading resistance appeared to be highest in these cultivars.

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