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도로의 야간 교통사고 저감을 위한 야광형 포장노면표시 기술개발의 적용성 연구
이용문,김흥래,김상태 한국도로학회 2015 한국도로학회논문집 Vol.17 No.3
PURPOSES: This study suggests the application of glow line marking technology for reducing traffic accidents at nighttime. METHODS: In this study, using a statistical analysis, we analyzed the characteristics of traffic accidents occurring at nighttime. Next, the strength, weakness, opportunity, and threat (SWOT) factors were derived based on a current-status analysis of glow line marking technology and road environments. An SO strategy, ST strategy, WO strategy, and WT strategy were established in accordance with the four SWOT factors. RESULTS : This study suggests that the following strategies should be promoted to apply glow line marking technology to a road environment: 1) an activation strategy for the technological development of glow line markings for a new paradigm in reducing traffic accidents, 2) a benefit enhancement strategy applying glow line marking technology in places where nighttime traffic accidents frequently occur, 3) a strategy for the expansion of glow line marking by replacing streetlights, and 4) a strategy for enhancing road applications through the development of various line marking methods in consideration of both performance and costs. CONCLUSIONS : The application of glow line markings in a road environment can contribute to a reduction of traffic accidents at nighttime, and aid energy savings from the replacement of streetlights.
李容門 東亞大學校 1978 東亞論叢 Vol.15 No.2
복숭아에서는 倉方早牲, 早生水密에 石?硫黃合劑를 撒布하였으며 배에서는 長十鄕과 明月에 NAA를 撒布하여 適用農度와 撒布適期를 究明하고자 試驗하여 얻은 結果는 다음과 같다. 복숭아 ① 着果數는 藥劑處理間 高度의 有意差가 있었고 單獨, 複合區의 相互作用은 有意差가 없었다. ② 藥劑의 適用濃度의 範圍는 넓었고 C₄-C₂區에서는 C₄의 高 濃度로서 有意差가 나타난것으로 思料된다. 배 ① 着果數에 있어서 品種間, 撒布日間에는 高度의 有意差가 있었으며, 撒布適期는 落花後 6日이었다. ② 長十鄕은 藥劑에 의한 摘果率이 높아 實用性이 높았고 明月은 摘果率이 낮아 實用性이 적었다. The Peach varieties of Chang bang choseng, Choseng sumill were sprayed with Lime Sulfur and were sprayed the NAA for Pear varieties of Chang sibrang, Myoung worl, and result sof experiment for study of applied concentration and sprayed suitable time are as follows. Peaches 1) Number of fruit setting was hihg significant difference according to the chemical treatment, and interaction of a single and complex section was not significant differece. 2) Scope of chemical applied concentration was broad, adn concered that significant difference was appeared as high comncentration of C₄in C₄-C₂section. Pears 1) Number of fruit setting was high significant difference according to the kind fo Varieties and sprayed days, and sprayed suitable time was 6th day after dropping of flower. 2) Chang sibrang was high utility character due to the high ratious of fruit setting by chemicals, and Myoung worl was low utility character due to the low ratios of fruit setting.
生長調節制 處理, 低溫貯臟 및 出庫后의 條件이 단감 品質變化에 미치는 影響
李容門 건국대학교 1987 論文集 Vol.24 No.1
This experiment was carried out to investigate change of vitamin C and composition of fatty acids in persimmon fruits by treatment of various growth regulators and effect of the low-temperature storage of the fruits bagged in polyethylene-film on the fruit quality. The results obtained were as followers; 1. In general, the in sloe temperature of the bags showed a slight decrease within one day after the fruit transfer from the storage temperature to the room temperature. Two days later after the transfer, the temperature increased rapidly, thereafter gradually decreased. 2. Treatments of ethrel only and 50ppm ethrel plus 2000ppm SADH (F block) enhanced the fruit coloring whereas a little enhancement of the coloring was found in the treatment of 2000ppm SADH plus 50ppm GA3 (H block). 3. The fruit firmness was relatively lower in the fruits from the ethrel treatment only and the F block than from the others. In contrast, the firmness of the fruits from the treatments of 25ppm ethrel plus 75ppm GA3 (E block) and H block was relatively higher. Especially a most efficient result for the long-term storage of the fruits was obtained by the treatment of 2000ppm SADH plus 50ppm GA3. 4. In sugar contents, there was generally no significance among the treatments. However, slight difference were found after the fruit transter from the storage temperature to the room temperature: One day after the transfer, the contents in the fruits from the F block showed relatively higher ones; four days after the transfer, the ones in the fruits from the H block and the D block (50ppm ethrel plus 50ppm GA3) were relatively higher. 5. The values of the coerrelation coefficients between the fruit coloring and the fruit firmness were obtained from œ0.73toœ0.85 according to a lapse of the fruit transfer. 6. The chlorophyll contents were relatively higher in the fruits from the two blocks of H and E, while lower from the F block. Generally the contents decreased four days later after the fruit transfer and there was also a similar trend in the contents of chlorophyll a and b. 7. The contents of vitamin C were highst in the fruits from the B block, whereas lowest from the F block. There was a slight decrease in the contents during the fruit storage. However, after drying the fruits at the high temperature, the contents showed a rapid decrease. 8. The major fatty acids of the fruits were myristic acid, palmitic acid and oleic acid Especially hexaoctadienoic acid in the fruits from the two blocks of E and H showed relatively higher contents with 15.36% and 19.82%, respectively. The fruits from no chemical treatment showed relatively higher contents of linolenic acid (21.7%) than ones of the other acids. 9. An unexpected result in the fatty acid composition was obtained from the treatment of paclobutrazol compared to the other treatments: The contents of myristic acid were 97.7%, the ones of palmitic acid 2.3%. It was difficult to explain the result, therefore, a further investigation for the interaction between them in the fruits is needed.