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| 1 | Use of drilling performance to improve rock-breakage efficiencies:A part of mine-to-mill optimization studies in a hard-rock mine显示文摘In a hard-rock mine,blasting is an important rock-breakage process that impacts energy consumption both in downstream comminution processes and mine productivity.Optimizing the blast fragmentation to improve rock-breakage efficiencies during crushing and grinding is key to mine-to-mill(MTM)optimization.This study explores the use of monitoring while drilling(MWD)data to achieve this goal.Representative penetration rates(PRs)were extracted from blastholes to estimate intact rock properties and predict the breakage efficiencies that directly affect comminution energy consumption.Two intact rock properties,tensile strength(TS)and Bond work index(BWI),were correlated with the PR data to predict these efficiencies in crushing and grinding,respectively.Because of the complexity of the raw MWD data and effects of various disturbances,the MWD data was preprocessed and normalized to achieve a representative PR value at each blasthole.This preprocessing entailed defining valid PR ranges from the MWD data that could eliminate the noise related to discontinuity features in the rock mass structure as well as errors in operator behaviors.The PR data was also normalized using the adjusted penetration rate(APR)to minimize the effects of mechanical factors such as drill feed force,torque,and rotational speed.To correlate the representative APR value with intact rock properties,TS and BWI,various laboratory experiments were conducted:drilling tests using a high-precision coring machine,Brazilian disc tests,and Bond grindability tests.Based on the results of these experiments,models were developed to predict rock-breakage efficiencies during crushing and grinding based on APR.The result of this study can be used to obtain blast energy designs that consider comminution energy consumption and efficiency in the downstream rock-breakage processes. | Junhyeok Park Kwangmin Kim | 2020 | International Journal of Mining Science and Technology2020，30，2： | 4 |
| 2 | Addition Al and/or Ti Induced Modifi cations of Microstructures, Mechanical Properties, and Corrosion Properties in CoCrFeNi High-Entropy Alloy Coatings显示文摘The purpose of this work is to study the influences of Al and/or Ti addition on the microstructures, mechanical properties and corrosion properties of CoCrFeNi-(Al, Ti) high entropy alloy(HEA) coatings. Three coatings, AlCoCrFeNi(Ⅰ), CoCrFeNiTi_(0.5)(Ⅱ) and AlCoCrFeNiTi_(0.5)(Ⅲ), were fabricated by laser cladding successfully. The AlCoCrFeNi(Ⅰ) coating exhibited a simple body-centered cubic(BCC) solid-solution structure, whereas the CoCrFeNiTi_(0.5)(Ⅱ) alloy exhibited a face-centered cubic(FCC) solid-solution and a small amount of Laves phase. The BCC phases in AlCoCrFeNiTi _(0.5)(Ⅲ) coating were characterized as Fe–Cr rich disordered BCC phases(A2) and Al-Ni–Ti-rich ordered BCC phases(L2_1) separately. The AlCoCrFeNiTi_(0.5)(Ⅲ) coating with dual-phase BCC structure showed the optimal performance of both mechanical and corrosion properties, which was superior to BCC-based AlCoCrFeNi(Ⅰ) and FCC-based CoCrFeNiTi_(0.5)(Ⅱ) coatings. Nanoindentation tests and quantitative investigations on the strengthening mechanisms of AlCoCrFeNiTi_(0.5)(Ⅲ) coating were conducted, suggesting that the precipitation strengthening is the dominant strengthening mechanism. In short, the addition of moderate amount of Al and Ti in CoCrFeNi HEA shows potential for the development of a high strength and corrosion-resistant coating. | Guoliang Ma Yong Zhao Hongzhi Cui Xiaojie Song Mingliang Wang Kwangmin Lee Xiaohua Gao Qiang Song Canming Wang | 2021 | Acta Metallurgica Sinica(English Letters)2021，34，8： | 4 |
| 3 | Anterior segment congestion of a right liver lobe graft in living-donor liver transplantation and strategy to prevent congestion显示文摘 | SungGyu Lee KwangMin Park Shin Hwang KiHoon Kim ChulSoo Ahn DukBok Moon JungWoo Joo SungHoon Cho KiBong Oh TaeYong Ha HyunSeong Yang KyuTaek Choi KyuSam Hwang EunJoo Lee YoungSang Lee HanJoo Lee YoungHwa Chung MyungHwan Kim SungKoo Lee DongJin Suh KyuBo S | 2003 | Journal of Hepato - Biliary - Pancreatic Surgery2003，，1： | 3 |
| 4 | CONGESTION OF RIGHT LIVER GRAFT IN LIVING DONOR LIVER TRANSPLANTATION显示文摘 | SungGyu Lee KwangMin Park Shin Hwang YoungJoo Lee DongNak Choi KiHoon Kim KyungSuck Koh SangHoon Han KyuTaek Choi KyuSam Hwang Masatoshi Makuuchi Yasuhiko Sugawara PyungChul Min | 2001 | Transplantation2001，，6： | 2 |
| 5 | CONGESTION OF RIGHT LIVER GRAFT IN LIVING DONOR LIVER TRANSPLANTATION显示文摘 | SungGyu Lee KwangMin Park Shin Hwang YoungJoo Lee DongNak Choi KiHoon Kim KyungSuck Koh SangHoon Han KyuTaek Choi KyuSam Hwang Masatoshi Makuuchi Yasuhiko Sugawara PyungChul Min | 2001 | Transplantation2001，，6： | 1 |
| 6 | General log-likelihood ratio expression and its implementation algorithm for gray-coded QAM signals 显示文摘 | KIM Ki Seol HYUN Kwangmin YU Chang Wahn | 2006 | ETRI Journal2006，28，3： | 1 |
| 7 | Hospitality finance research during recent two decades: Subjects, methodologies, and citations显示文摘 | SooCheong (Shawn) Jang Kwangmin Park | 2011 | International Journal of Contemporary Hospitality Management2011，，4： | 1 |
| 8 | Firm growth patterns:Examining the associations with firm size and internationalization显示文摘 | Kwangmin Park SooCheong (Shawn) Jang | | 0，，03： | 1 |
| 9 | An adult-to-adult living donor liver transplant using dual left lobe grafts显示文摘 | SungGyu Lee Shin Hwang KwangMin Park YoungJoo Lee DongLak Choi ChulSoo Ahn YangWon Nah KyungSuck Koh SangHoon Han SangHoon Park PyungChul Min | 2001 | Surgery2001，，5： | 1 |
| 10 | Mergers and Acquisitions and Firm Growth: Investigating Restaurant Firms 显示文摘 | Kwangmin Park Soo Cheong Jang | 2011 | International Journal of Hospitality Management2011，，30： | 1 |
| 11 | Life-cy- cle cost-effective optimum design of steel bridges con- sidering environmental stressors 显示文摘 | Lee Kwangmin Cho Hyonam Cha Cheoljun | 2006 | Engineering Structures2006，，28： | 1 |
| 12 | Rupture propagation inferred from damage patterns, slip distribution, and segmentation of the 1957 MW 8.1 Gobi-Altay earthquake rupture along the Bogd fault, Mongolia显示文摘 | Choi Jin-Hyuck Jin Kwangmin Enkhbayar Dandar Davvasambuu Battogtokh Bayasgalan Amgalan Kim Young-Seog | 2012 | Solid Earth2012，，12： | 1 |
| 13 | Life-cycle cost-effective optimum design of steel bridges considering environmental stressors显示文摘 | Lee Kwangmin Cho Hyonam Cha Cheoljun | 2006 | Engineering Structures2006，28，9： | 1 |
| 14 | Life-cycle cost-effective optimum design of steel bridges显示文摘 | Lee Kwangmin Cho Hyonam Choi Youngmin | 2004 | Journal of Constructional Steel Research2004，60，11： | 1 |
| 15 | Capital structure, free cash flow, diversification and firm performance:A holistic analysis 显示文摘 | PARK Kwangmin JANG SooCheong | 2013 | International Journal of Hospitality Manage- ment2013，33，： | 1 |
| 16 | 富勒烯增强铝基纳米复合材料的力学性能(英文)显示文摘研究了富勒烯在铝基复合材料中的增强作用。该复合材料采用二次球磨结合热轧制技术制备。最初,富勒烯是由富勒烯分子通过范德华力结合在一起形成大的颗粒(~200μm),首先,通过行星球磨将大的颗粒破碎成更小的颗粒(~1μm);然后,采用高能球磨将富勒烯粉末分散在铝粉中;最后,将富勒烯/铝复合粉体在480 oC热轧成板材。由于富勒烯的晶粒细化和弥散强化作用,2%(体积分数)的富勒烯/铝复合材料板材表现出高的维氏硬度(HV^222)和高的屈服强度(~740 MPa)。 | Kwangmin CHOI Jiyeon SEO Donghyun BAE Hyunjoo CHOI | 2014 | Transactions of Nonferrous Metals Society of China2014，24，S1： | 1 |
| 17 | Effect of diversification on firm performance: Application of the entropy measure显示文摘 | Kwangmin Park SooCheong (Shawn) Jang | 2011 | International Journal of Hospitality Management2011，，1： | 1 |
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