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10¿ù 20ÀÏ(¼ö) 16:30-17:00, Àç·á°µµ3-1(303B)°µµ¿Í ±× »ó¹ÝƯ¼º µ¿½ÃÇâ»óÀ» À§ÇÑ Çձݼ³°è Àü·«It is an ultimate goal for almost all materials scientists to improve strength, ductility, formability and conductivity of metal together. Ductility, formability and conductivity are the trade-offs for the increase in strength, since the mechanism(s) to increase these properties is subject to conflict to the mechanism to increase strength. Particularly, ductility and formability depend largely on the degree of incompleteness in metal, that includes grain boundary (GB) segregation (i.e., irregular coarse precipitates, pores and inclusions) causing GB instability, non-uniform strain between grains and stress concentration along GB. A variety of metallurgical methods have been attempted based on the morphological control of microstructure to simultaneously increase strength and its trade-off properties of ductility, formability and conductivity together. This presentation addresses the microstructural aspects of strengthening a metal together with improving its trade-off properties of ductility, formability and conductivity. |
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10¿ù 22ÀÏ(±Ý) 9:30-10:00, À¶ÇÕ1-1(203)Enhancing Optical Properties and Stability of Cesium Lead Halide Quantum Dots through Nickel Substitution and Ligand ChangeIn this study, we investigated the methods for prolonged lifetime in the CsPbX3 (X: Cl, Br, I) structured perovskite materials. First, the changes in structural and optical properties were compared by doping Ni in the CsPbBr3 quantum dots (QDs). The steady-state photoluminescence (PL) intensity of Ni-doped QDs shows 3.8 times increase comparing with undoped QDs. CsPbBr3 without nickel had a quantum efficiency of only 56.7 %, whereas CsPbBr3 doped with nickel had a quantum efficiency of 82.9 %. It was found that the doped divalent element acts as a defect in the perovskite structure, reducing the recombination rate of electrons and holes. After 48 hours UV-light irradiation, PL intensity of CsPbBr3 decreased about 70 % while that of Ni-substituted CsPbBr3 QDs decreased only 18 %, indicating the prolonged stability against UV-light irradiation. Furthermore, Ni-substituted CsPbBr3 QDs shows higher stability against temperature and moisture. These results confirmed that Ni substitution method is effective to increase the stability of CsPbX3 QDs. Second, we used sulfur oleylamine (S-OLA) complex which was utilized to etch the defect-rich surface of the CsPbI3 QDs and then self-assembly to form a matrix outside the CsPbI3 QDs protected the QDs from environmental moisture and solar irradiation. The PL intensity of the CsPbI3 QDs increased by 21% of its initial value. There was a significant increase in the colloidal stability of the CsPbI3 QDs. The introduction of S-OLA induced the recovery of the lost photoluminescence of the nonluminous aged CsPbI3 QDs with time to 95% of that of the fresh QDs. Furthermore, the PL was maintained for one month. The increase in the stability and PL intensity are critical for realizing high-performance perovskite-QD-based devices. |
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10¿ù 20ÀÏ(¼ö) 16:15-16:45, ³ª³ë3-1(301A)°æÁ¦ÀûÀÎ ³ª³ë±¸Á¶ Çü¼º¹æ¹ý ¹× ±× ÀÀ¿ë°æÁ¦ÀûÀΡ¡³ª³ë±¸Á¶¡¡Çü¼º¹æ¹ý¡¡ ¹×¡¡±×¡¡ÀÀ¿ë ³ª³ë±¸Á¶´Â¡¡¸¶ÀÌÅ©·Î¡¡±¸Á¶¿¡¼´Â¡¡º¼¡¡¼ö¡¡¾ø´Â¡¡»õ·Î¿î¡¡¹°¼ºÀ»¡¡³ªÅ¸³»±â¡¡ ¶§¹®¿¡¡¡´Ù¾çÇÑ¡¡¹æ¹ýÀ¸·Î¡¡Á¦Á¶µÇ¾î¿Ô´Ù£®¡¡³ª³ë ±¸Á¶¸¦ Çü¼ºÇϱâ À§ÇÑ ¹æ¹ýÀ¸·Î´Â ÇöÀç ¼·Î °æÇÕÀ» ¹úÀÌ°í ÀÖÀ¸¸ç, Àû¿ë ºÐ¾ß¿Í ½ÃÆíÀÇ Å©±â ¹× Á¦Á¶ ¿ø°¡ µî¿¡ µû¶ó »ç¿ë °øÁ¤ÀÌ ´Þ¶óÁø´Ù.¡¡¹ÝµµÃ¼ °øÁ¤¿¡¼ ÆÄ»ýµÈ MEMS °øÁ¤, ³ª³ëÀÓÇÁ¸°Æ® °øÁ¤, ÄÝ·ÎÀÌ´Þ ¸®¼Ò±×¶óÇÇ °øÁ¤, ¸ÞÅ» ¸¶½ºÅ© ¸®¼Ò±×¶óÇÇ °øÁ¤ ¹× ±âŸ °øÁ¤À¸·Î ³ª´ ¼ö ÀÖÀ¸¸ç °¢°¢ÀÇ ±â¼ú¿¡ ´ëÇØ °£·«ÇÑ °íÂû°ú¡¡À̵顡°øÁ¤¿¡¡¡ºñÇØ¡¡Àúºñ¿ëÀÇ¡¡¹«¸¶½ºÅ©¡¡ÇöóÁ¡¡±â¹Ý¡¡³ª³ë±¸Á¶¡¡Çü¼º±â¼ú¿¡¡¡´ëÇØ¡¡»ìÆ캻´Ù.¡¡³ª³ë±¸Á¶¸¦¡¡ÀÌ¿ëÇÏ¿©¡¡Ãʹ߼ö£¬¡¡¹Ý»ç¹æÁö¡¡ ¹×¡¡ÇöóÁî¸ð´Ð¡¡È¿°ú¡¡µîÀ»¡¡±¸ÇöÇÏ°í¡¡ÀÖÀ¸¸ç£¬¡¡½Ç¿ëȸ¦¡¡À§ÇØ¡¡ÇÊ¿äÇÑ¡¡Ç¥¸é¡¡³ª³ë±¸Á¶ÀÇ¡¡±â°èÀû¡¡³»±¸¼ºÀ»¡¡Çâ»ó½ÃÅ°´Â¡¡¿¬±¸¿Í¡¡°¨¿°º´¡¡Á¶±âÁø´ÜÀÇ¡¡¼¾¼¡¡±âÆÇ¿¡¡¡È°¿ëÇϴ¡¡ºÐ¾ß·Î¡¡È®´ëÇÏ°í¡¡ÀÖ´Ù£®¡¡ |
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10¿ù 21ÀÏ(¸ñ) 15:20-15:50, ö°I4-3(201A)ÀÚµ¿Â÷ ¿ÜÆÇÀç¿ë Ti÷°¡ ±ØÀúź¼Ò°ÀÇ ¿¬¼Ó ÁÖÁ¶¿ë ³ëÁñ ¸·Èû ±â±¸ ±Ô¸í°ú ÇØ°á ¹æ¾È µµÃâ±ØÀúź¼Ò°Àº Æä¶óÀÌÆ® °áÁ¤ ±¸Á¶ ³» ħÀÔÇü ¿ø¼Ò¸¦ ±ØÈ÷ ³·Àº ³óµµ·Î Á¦¾îÇÔÀ¸·Î½á ½É°¡°ø¼ºÀ» ºÎ¿©ÇÏ´Â °Á¾À¸·Î ±Ø½ÉÇÑ ¼ºÇüÀÌ ÇÊ¿äÇÑ °÷, ƯÈ÷ ÀÚµ¿Â÷ÀÇ ¿ÜÆÇÀç·Î ¸¹ÀÌ È°¿ëµÈ´Ù. °í·Î-Àü·Î-RH-Åϵð½Ã-¸ôµå¸¦ °ÅÃÄ »ý»êµÇ¸ç, Àü·Î ¹× RH¿¡¼ Żź, RH Ãʱâ Al Å»»ê, RH Áß±â Ti ÇÕ±Ýö ÅõÀÔÀ» ½ÃÇàÇÑ´Ù. Al Å»»ê °úÁ¤Áß ´Ù·®ÀÇ ¾Ë·ç¹Ì³ª¼º °³Àç¹°ÀÌ ¹ß»ýÇÑ´Ù. º» Á¦Ç°Àº ±× Ư¼º»ó ¹Ì·ÁÇÑ Ç¥¸é Ç°ÁúÀÌ ¿ä±¸µÇ¾î, ºÒ¼ø¹° ƯÈ÷ °³Àç¹°ÀÇ Ç¥¸é ºÎÂø¿¡ ¹Î°¨ÇÑ °Á¾À̹ǷΠÁ¦° ¹× ¿¬¼Ó ÁÖÁ¶ °úÁ¤ Áß ¿ë°ÀÇ Ã»Á¤µµ À¯Áö°¡ Áß¿äÇÏ´Ù. ±×·³¿¡µµ ºÒ±¸ÇÏ°í, º» °Á¾Àº ¿¬¼Ó ÁÖÁ¶½Ã Åϵð½Ã¿Í ¸ôµå¸¦ ¿¬°áÇϴ ħÁö ³ëÁñ ³»º® ¸·Èû Çö»óÀÌ Å¸ °Á¾ ´ëºñ ¿À§Çϸç, ƯÈ÷ ½É°¡°ø¼º ºÎ¿©¸¦ À§ÇØ ÅõÀÔÇÏ´Â Ti ³óµµ°¡ Áõ°¡ÇÒ ¼ö·Ï ³ëÁñ ¸·Èû Çö»óÀÌ ½ÉÇØÁö´Â Çö»óÀÌ ¹ß°ßµÈ´Ù. ³ëÁñ ¸·ÈûÀº Á¶¾÷¼º ÀúÇÏ, ¸·Èû ¹°ÁúÀÇ Å»¶ô ½Ã Á¦Ç° Ç¥¸é ¿À¿°µîÀ» À¯¹ßÇÒ ¼ö ÀÖ¾î ¾ïÁ¦µÇ¾î¾ß ÇÏ´Â Çö»óÀ̸ç, °Á¾º° ±× Ư¼ºÀÌ ´Ù¸£´Ù. ƯÈ÷ Ti ÷°¡ ±ØÀúź¼Ò°ÀÇ °æ¿ì º» Çö»ó¿¡ ´ëÇÑ ÀÌÇØ ¹× ÇØ°á ¹æ¾ÈÀ» ã±â À§ÇØ ´Ù°¢µµ·Î ³ë·ÂÀ» ÇØ ¿ÔÀ¸³ª ±Ù·¡±îÁö ¶Ñ·ÇÇÑ ¿øÀÎ ¹× ÇØ°á ¹æ¾ÈÀ» ãÁö ¸øÇÑ ½ÇÁ¤ÀÌ´Ù. º» ¿¬±¸¿¡¼´Â Çö»óÀÇ ¿øÀÎ ±Ô¸íÀ» À§ÇØ Ä§Áö ³ëÁñ ³»ÈÀç¿Í ¿ë°ÀÇ °è¸é ¹ÝÀÀÀ» ¿¿ªÇÐ ¹× »óÆòÇü °üÁ¡¿¡¼ Á¢±ÙÇÏ¿© °è¸é¿¡¼ ¹ß»ýÇÏ´Â Àç»êÈ Çö»óÀÌ ³ëÁñ ¸·Èû ¹°ÁúÀÇ ½Ã¹ßÁ¡ÀÌ µÇ´Â°ÍÀ¸·Î °á·ÐÁþ°í, ÇØ´ç °è¸é ¹ÝÀÀÀ» ¾ïÁ¦ÇÏ´Â ¹æÇâÀ¸·Î ³»ÈÀç ÀçÁú °³¼±À» µµÃâÇÏ¿´´Ù. º» ¹ßÇ¥¿¡¼´Â ±ØÀúź¼Ò° Ư¼º, Ti ÷°¡°ÀÇ °è¸é ¹× Àç»êÈ Æ¯¼º, Àç»êȽà »ý¼ºµÇ´Â »êȹ°ÀÇ »óÆòÇü, Ti ÇÔÀ¯ ¿ë°°ú ³ëÁñ ³»ÈÀç¿ÍÀÇ ¹ÝÀÀ °æÇâ ¹× ¾ïÁ¦¸¦ À§ÇÑ ´ëÃ¥À» º¸°íÇÑ´Ù. |
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10¿ù 21ÀÏ(¸ñ) 14:50-15:20, ö°I4-2(201A)Fundamentals of high temperature physical chemistry of refractory-slag-metal-inclusion multiphase reactionsThe physicochemical properties of molten slag are highly important to understand and to control the complicated phenomena occurred in steel refining processes. For example, the MgAl2O4 spinel is one of the harmful inclusions in various kinds of steels. The probability of spinel inclusion has been known to be strongly affected by slag chemistry and deoxidation practices. Moreover, the thermophysical properties of slags such as viscosity should also be carefully controlled to suppress the formation of this harmful inclusion at the ladle refining stage. Alternatively, tundish metallurgy has been issued because it is the final reactor for controlling the steel cleanliness in view of the reoxidation phenomenon of molten steel. The reoxidation is experienced by the contamination of molten steel not only due to air entrapment but also due to slag-metal reaction. There is less investigations for the latter compared to the former. Consequently, in this talk, the recent issues for the physicochemical properties of slag will be discussed in terms of clean steel production technologies.Keywords: Slag, Steel refining, Inclusion, Deoxidation, Viscosity |
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10¿ù 21ÀÏ(¸ñ) 10:45-11:20, 94ö°1-2(203)Æ÷½ºÄÚ ESG °æ¿µ, ź¼ÒÁ߸³°ú ģȯ°æÂ÷¿ë Á¦Ç° ¹× ¼Ö·ç¼ÇÃÖ±Ù ¿ì¸®³ª¶ó »Ó¸¸ ¾Æ´Ï¶ó EU, ¹Ì±¹, ÀϺ» µî ¼¼°è °¢±¹¿¡¼´Â UN IPCC ±Ç°í¿¡ µû¶ó 2050 ź¼ÒÁ߸³ ¸ñÇ¥¸¦ ¼±¾ðÇÏ¿´½À´Ï´Ù. ö°À縦 »ç¿ëÇÏ´Â °í°´»ç¿¡¼µµ ź¼ÒÁ߸³ ÇÁ·Î±×·¥¿¡ µ¿ÂüÇϱ⸦ ¿ä±¸ÇÏ°í ÀÖ°í, ÅõÀÚ°¡µéµµ ¡®1.5¡É ½Ã³ª¸®¿À¡¯¿¡ »óÀÀÇϴ ȸ»ç °¨Ãà¸ñÇ¥¸¦ ¼³Á¤ÇÏ°í ÀÌÇàÇϵµ·Ï ¿ä±¸ÇÏ°í ÀÖ½À´Ï´Ù. ÀÌ¿¡ µû¶ó Æ÷½ºÄÚ´Â Áö¼Ó°¡´ÉÇÑ ¹ßÀüÀ» À§ÇØ 2050 ź¼ÒÁ߸³ ¸ñÇ¥¸¦ ¼±¾ðÇÏ¿´½À´Ï´Ù. 2050³â±îÁö ´Ü°èº° ź¼Ò°¨Ãà·® ¹× ´Þ¼º¹æ¾ÈÀ» ¼³Á¤ÇÏ°í ±Ã±ØÀûÀ¸·Î ¼ö¼Òȯ¿øÁ¦Ã¶·Î ÀüȯÇÏ´Â °ÍÀ» ¸ñÇ¥·Î ÇÏ°í ÀÖ½À´Ï´Ù. ÀÌ·¯ÇÑ Åº¼ÒÁ߸³ ½Ã´ë¿¡ ´ëºñÇÏ¿© Æ÷½ºÄÚÀÇ ÇÙ½É »ê¾÷µµ ±âÁ¸ÀÇ Ã¶°¼ÒÀç ¿Ü¿¡ ÀÌÂ÷ÀüÁö ¼ÒÀç, ¼ö¼Ò, LNGµîÀÇ ºÐ¾ß·Î ³ÐÇô°¥ °èȹÀÔ´Ï´Ù.¹°·Ð ±× Á߽ɿ¡´Â ö°ÀÌ ¿©ÀüÈ÷ Á¸ÀçÇÒ °ÍÀÔ´Ï´Ù. ö°Àº ´Ù¸¥ ¼ÒÀç ´ëºñ ź¼Ò¹èÃâÀÌ ÇöÀúÇÏ°Ô ÀûÀº ģȯ°æ ¼ÒÀçÀÔ´Ï´Ù. 1kgÀ» ¸¸µå´Âµ¥ ÀÌ»êÈź¼Ò ¹èÃâ·®À» ºñ±³Çغ¸¸é, ö° ´ëºñÇÏ¿© ¾Ë·ç¹Ì´½Àº 7.2¹è, ź¼Ò¼¶À¯´Â 9.6¹è ¹èÃâ·®ÀÌ ¸¹½À´Ï´Ù. ö° »ê¾÷ÀÇ ¿Â½Ç°¡½º ¹èÃâÀÌ ¸¹´Ù°í ÇÏ´Â °ÍÀº »ç¿ë·®ÀÌ ¾ÐµµÀûÀ¸·Î ¸¹Àº °Í¿¡¼ ±âÀÎÇÏ´Â °ÍÀÔ´Ï´Ù. Æ÷½ºÄڴ ģȯ°æ ½Ã´ëÀÇ Àü±âÂ÷ ¼ö¿ä Áõ´ë¿¡ ´ëÀÀÇÏ¿© Â÷ü°ÆÇ, ¸ðÅÍ¿ë Àü±â°ÆÇ »Ó¸¸ ¾Æ´Ï¶ó ¹èÅ͸®ÆÑ °Àç, ¹èÅ͸®¿ë ¼ÒÀç, ¼ö¼Ò¿¬·áÀüÁö ¼ÒÀç µîÀ» ¼Ö·ç¼Ç ºê·£µå·Î ÅëÇÕ Á¦°øÇÏ°í ÀÖ½À´Ï´Ù. ±× Áß Â÷ü°ÆÇÀÇ ÇÙ½ÉÀÌ µÇ´Â ±â°¡½ºÆ¿ÀÇ °æ¿ì ±× µ¿¾È ¸¹Àº ¿¬±¸°³¹ßÀ» ÅëÇØ ¾ç»ê¿¡ Àû¿ëµÇ°í ÀÖÀ¸³ª, ±¤¹üÀ§ÇÑ »ç¿ëÀ» ¾Õ´ç±â±â À§ÇØ ÇöÀç À̽´°¡ µÇ°í ÀÖ´Â LME, ¼ö¼ÒÃ뼺, ±ÁÈû¼º °³¼± µî¿¡ ´ëÇÑ ¹®Á¦¸¦ »êÇп¬ Çùµ¿À» ÅëÇØ ÇÏ·ç »¡¸® Ç®¾î³»¾ß ÇÒ °ÍÀÔ´Ï´Ù. ÀÌ·¯ÇÑ Â÷ü¿ë ö°Àç ÀÌ¿Ü ¹èÅ͸®¿ë ¼ÒÀç, Àü±â°ÆÇ, ¸ÖƼ ¸ÓÅ׸®¾ó, ÀÌ¿ë±â¼ú ¼Ö·ç¼Ç µî ¾ÕÀ¸·Î ģȯ°æÂ÷¿ë ¼ÒÀç Á¾ÇÕ °ø±Þ»ç·Î¼ÀÇ ÀÔÁö¸¦ ±»°ÇÈ÷ ÇØ ³ª°¥ °ÍÀÔ´Ï´Ù. |
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10¿ù 21ÀÏ(¸ñ) 15:50-16:20, ö°I4-4(201A)The present state and future of steel industryö°»ê¾÷Àº ÀÚµ¿Â÷, Á¶¼±, ÀüÀÚ, ±â°è, °Ç¼³ µî ÀηùÀÇ »î°ú ¿¬°üµÈ ¸ðµç »ê¾÷¿¡ ±âÃʼÒÀ縦 °ø±ÞÇÏ´Â ±â°£»ê¾÷À¸·Î½á ¡®»ê¾÷ÀÇ ½Ò¡¯À̶ó°í ºÒ¸®¸ç ÇÑ ±¹°¡ÀÇ °æÁ¦¹ßÀüÀ̳ª Èï¸Á¼º¼è¸¦ ÇÔ²² ÇØ ¿Ô´Ù°í ÇÒ ¼ö ÀÖ½À´Ï´Ù.Àηù°¡ óÀ½ »ç¿ëÇÑ ±Ý¼ÓÀº ±¸¸®¿´Áö¸¸, öÀÇ ¹ß¸í°ú ÇÔ²² ÀηùÀÇ ¹®¸íÀº ¸Å¿ì ºü¸£°Ô ¹ßÀüÇØ ¿Ô½À´Ï´Ù. ƯÈ÷ ¿¹ºÎÅÍ Ã¶ÀÇ »ý»ê·®Àº ±× ³ª¶óÀÇ ±¹·ÂÀ» »ó¡ÇÑ´Ù°í ÇÒ ¼ö ÀÖ½À´Ï´Ù. 18¼¼±â »ê¾÷Çõ¸íÀÇ ±Ù¿øÁöÀÎ ¿µ±¹ÀÌ ¼¼°èÀÇ ÆбÇÀ» Àå¾ÇÇÏ°í, 19¼¼±â¿Í 20¼¼±â ¼¼°è´ëÀüÀÇ ÁÖÀΰøÀÌ µ¶ÀÏ°ú ¹Ì±¹ÀÌ µÉ ¼ö ÀÖ¾ú´ø ¿øµ¿·Â ¶ÇÇÑ Ã¶°»ê¾÷À̾úÀ½À» ´©±¸µµ ºÎÀÎÇÒ ¼ö ¾øÀ» °ÍÀÔ´Ï´Ù. ´ëÇѹα¹ÀÇ ±Þ°ÝÇÑ °æÁ¦¼ºÀå ¶ÇÇÑ Ã¶°»ê¾÷ÀÇ °³¹ß°ú ±× ±Ë¸¦ ÇÔ²²ÇØ ¿Ô´Ù°í ÇÒ ¼ö ÀÖ½À´Ï´Ù. ¿À´Ã³¯ ¿ì¸®ÀÇ ÀÚµ¿Â÷, Á¶¼±, °Ç¼³ µî ¸ðµç ºÐ¾ßÀÇ »ê¾÷¿¡¼ ¼¼°èÀû ±¼ÁöÀÇ ±â¾÷µéÀÌ ³ª¿Ã ¼ö ÀÖ¾ú´ø ¿øµ¿·Â ¶ÇÇÑ Ã¶°»ê¾÷ÀÌ Å« ¹öÆÀ¸ñ ¿ªÇÒÀ» Ç߱⠶§¹®ÀÔ´Ï´Ù. Ãֱ٠ö°»ê¾÷Àº Áß±¹¹ß ¼ÒÀçÀÇ °ø±Þ°úÀ×, ÀÚµ¿Â÷, Á¶¼±, °Ç¼³ µî ö° Àü¹æ»ê¾÷ÀÇ Àå±â Á¤Ã¼ Çö»ó, ICT ±â¹ÝÀÇ Á¦Á¶¾÷ Çõ½Å°ú ÇÔ²² ±âÈĺ¯È·Î ÀÎÇÑ Àü ¼¼°èÀûÀΠź¼ÒÁ߸³ ¿òÁ÷ÀÓÀ¸·Î ö° Á¦Á¶¹æ½ÄÀÇ ±Ù¿øÀûÀÎ º¯È ¿ä±¸ µî ½Ç·Î ´Ù¾çÇÑ µµÀü¿¡ Á÷¸éÇØ ÀÖ´Â »óȲÀÔ´Ï´Ù. º» ¹ßÇ¥¿¡¼´Â ¾Õ¿¡¼ ¾ð±ÞÇÑ Ã¶°»ê¾÷ÀÇ ´ç¸é°úÁ¦¿Í º¯ÈÀÇ ¼Ò¿ëµ¹ÀÌ ¾È¿¡¼ ö°»ê¾÷ÀÌ ¹Ì·¡ÀÇ Àηù»çȸ¿Í ¾î¶»°Ô Á¶È¸¦ ÀÌ·ç¸ç ÁøÈÇØ ³ª°¥ °ÍÀÎÁö¿¡ ´ëÇÏ¿© ¿©·¯ºÐµé°ú ÇÔ²² ³íÀÇÇÏ°íÀÚ ÇÕ´Ï´Ù. ƯÈ÷ »õ·Î¿î °³³äÀÇ Ã¶°»ê¾÷ »ýÅ°踦 ¾ß±â½ÃÅ°´Â ¡º¹Ì·¡¸ðºô¸®Æ¼¡», ¡º½º¸¶Æ®ÆÑÅ丮¡» ±×¸®°í ¡ºÅº¼ÒÁ߸³¡»À̶ó´Â 3°¡Áö Å°¿öµå¸¦ ¹ÙÅÁÀ¸·Î ö°»ê¾÷ÀÇ ¹Ì·¡ ¹ßÀü ¹æÇâ°ú »õ·Î¿î ±âȸ ¿äÀο¡ ´ëÇÏ¿© ¿©·¯ºÐµé°ú ÇÔ²² °øÀ¯ÇÏ°íÀÚ ÇÕ´Ï´Ù. Keyword: ö°»ê¾÷, ź¼ÒÁ߸³, ½º¸¶Æ®ÆÑÅ丮 |
(06633) ¼¿ïƯº°½Ã ¼Ãʱ¸ ¼ÃÊ´ë·Î 56±æ 38 ´ëÇѱݼӡ¤Àç·áÇÐȸ ȸ°ü (¼ÃÊ1µ¿ 1666-12) TEL : 02-557-1071 FAX : 02-557-1080 E-mail : kim@kim.or.kr Copyright © 2020 »ç´Ü¹ýÀÎ ´ëÇÑ±Ý¼Ó Àç·áÇÐȸ. All rights reserved. |
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