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| 1 | Investigation of drying characteristics of low rank coal of bubbling fluidization through experiment using lab scale显示文摘Lignite is a low rank coal which is evenly distributed throughout the world and accounts for 45% of the total coal reserves. As it has a higher moisture content, its moisture content must be reduced in order to utilize it in power plant. In the present work, experiments on lignite has been done using a lab scale fluidized-bed reactor. Drying lignite through fluidized-bed reactor has a higher drying rate because there is good contact between particles and gas in the fluidized-bed reactor. Fluidized-bed drying can use air of 1.5 times of the minimum fluidizing velocity performance at bubbling fluidized-bed. Experiments have been performed on coal particle sizes of 0.3–1 mm, 1–1.18 mm and 1.18–2.8 mm, with operating temperatures being 100°C, 125°C and 150°C, respectively. It is found that fluidization has a higher drying rate due to the heat transfer rate through air velocity. Hence, moisture content in lignite can be dried to a desired value with a time interval of 10 min. The experiment through fluidized-bed reactor is expected to be useful for saving money and time. | DoMan JEON TaeJin KANG HyungTaek KIM SiHyun LEE SangDo KIM | 2011 | Science China(Technological Sciences)2011，54，7： | 2 |
| 2 | The TiO2-adding effects in WO3-based NO2 sensors prepared by coprecipitation and precipitation method显示文摘 | Daesik L Sangdo H Sangmun L | 2000 | Sensors and Actuators2000，65，： | 2 |
| 3 | Synthesis of indi- um tin oxide (ITO) and fluorine-doped tin oxide (FTO) nano- powder by sol-gel combustion hybrid method显示文摘 | Han Chihwan: Han Sangdo Jihye Gwak | 2007 | Materials Let- ters2007，61，89： | 1 |
| 4 | Analytical modeling of the standard fire behavior of loaded CFT columns显示文摘 | Hong Sangdo Varma A H | 2009 | Journal of Constructional Steel Research2009，65，1： | 1 |
| 5 | Characteriation of made of solvent extracted coals 显示文摘 | Cho Wan - taek Kim Sangdo Choi Ho - kyung | 2012 | Koran Journal of Chemical Engineering2012，29，2： | 1 |
| 6 | Blank design and formability for non-circular deep drawing processes by the finite-element method显示文摘 | Sangdo Kim k Minho Park Sangjin Kim | 1998 | Journal of Materials processing Techolosy1998，75，： | 1 |
| 7 | Characterization of Chars Made of Solvent Extracted Coals显示文摘 | Wan-tack C Sangdo K Ho-kyung C | 2012 | Koran Journal of Chemical Engineering2012，29，2： | 1 |
| 8 | Supercritical carbon dioxide extraction of perilla Oil显示文摘 | Wonyoung Lee Sangdo Yeo | 1996 | Foods and Biotechnology1996，5，4： | 1 |
| 9 | Self-recognition of vehicle position usingUHF passive RFID tags显示文摘 | Sangdo Park Hongchul Lee | 2013 | IEEE Transactions on Industrial Electronics2013，60，1： | 1 |
| 10 | Systematic Review of Cemented and Uncemented Hemiarthroplasty Outcomes for Femoral Neck Fractures显示文摘 | Jaimo Ahn MD PhD Li-Xing Man MD MSc SangDo Park MD Jeffrey F. Sodl MD John L. Esterhai MD | 2008 | Clinical Orthopaedics and Related Research2008，，10： | 1 |
| 11 | Supercritical carbon dioxide extraction of perilla oil显示文摘 | KIM Sanguk LEE Wonyoung YEO Sangdo | 1996 | Foods and Biotechnology1996，5，4： | 1 |
| 12 | Preparation and characterization of indium-doped tin dioxide nanocrystalline powders显示文摘 | Hua Yang Sangdo Han Li Wang | 1998 | Mater Chem Phy1998，56，： | 1 |
| 13 | A comparison of spontaneous combustion susceptibility of coal according to its rank 显示文摘 | WANTAEK Jo HOKYUNG Choi SANGDO Kim | 2013 | Korean Journal of Chemical Engineering2013，30，5： | 1 |
| 14 | Influence of stoichiometry and alkalinity on barium hexaferrite formation via the supercritical water crystallization method显示文摘 | Seungwook Rho Sangdo Park | 2002 | Korean Journal of Chemical Engineering2002，，1： | 1 |
| 15 | Statistical study of the liquefaction of used rubber tyre in supercritical water显示文摘 | Sangdo P Earnest F G | 1997 | Fuel1997，76，11： | 1 |
| 16 | Characterization of Chars Made of Solvent Extracted Coals显示文摘 | Cho Wan-taek Kim Sangdo Choi Ho-kyung | 2012 | Koran Journal of Chemical Engineering2012，29，2： | 1 |
| 17 | Characterization of Chars Made of Solvent Extracted Coals显示文摘 | Cho Wan-taek Kim Sangdo Choi Ho-kyung et at | 2012 | Koran Jour- nal of Chemical Engineering2012，29，2： | 1 |
| 18 | Analytical modeling of the standard fire behavior of loaded CFT columns显示文摘 | Sangdo Hong Amit H. Varma | 2008 | Journal of Constructional Steel Research2008，，1： | 1 |
| 19 | Management of Schemes and Threat Prevention in ICS Partner Companies Security显示文摘An analysis of the recent major security incidents related to industrial control systems,revealed that most had been caused by company employees.Therefore,enterprise security management systems have been developed to focus on companies’personnel.Nonetheless,several hacking incidents,involving major companies and public/financial institutions,were actually attempted by the cooperative firms or the outsourced manpower undertaking maintenance work.Specifically,institutions that operate industrial control systems(ICSs)associated with critical national infrastructures,such as traffic or energy,have contracted several cooperative firms.Nonetheless,ICT’s importance is gradually increasing,due to outsourcing,and is the most vulnerable factor in security.This paper proposes a virtualized security management scheme for the resident cooperative firms in the industrial control infrastructure.Since such companies often cannot afford adequate investment in security,the scheme is to let an ICS company provide the virtualized system.One of its merits is the convenience of controlling a VDI server at the center.The cooperative firms were classified,based on their respective security levels,and statistics were collected throughout a four-year period for the results.This paper analyzes the policies and virtualization systems that have been applied to the security of the partner companies,which engaged in ICS security.A suitable model for ICS security was then proposed by analyzing their effects on the system efficiencies,based on the comparisons of the security inspection results obtained before and after virtualization.The proposed system is expected to contribute to industrial safety. | Sangdo Lee Jun-Ho Huh | 2021 | Computers, Materials & Continua2021，，12： | 0 |
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