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| 1 | In-situ synthesis of TiC/Fe alloy composites with high strength and hardness by reactive sintering显示文摘Fe alloy composites reinforced with in-situ titanium carbide(Ti C) particles were fabricated by reactive sintering using different reactant C/Ti ratios of 0.8,0.9,1 and 1.1 to investigate the microstructure and mechanical properties of in-situ Ti C/Fe alloy composites.The microstructure showed that the in-situ synthesized Ti C particles were spherical with a size of 1–3 μm,irrespective of C/Ti ratio.The stoichiometry of in-situ Ti C increased from 0.85 to 0.88 with increasing C/Ti ratio from 0.8 to 0.9,but remained almost unchanged for C/Ti ratios between 0.9 and 1.1 due to the same driving force for carbon diffusion in Ti Cxat the common sintering temperature.The in-situ Ti C/Fe alloy composite with C/Ti = 0.9 showed improved mechanical properties compared with other C/Ti ratios because the presence of excess carbon(C/Ti = 1 and 1.1) resulted in unreacted carbon within the Fe alloy matrix,while insufficient carbon(C/Ti = 0.8)caused the depletion of carbon from the Fe alloy matrix,leading to a significant decrease in hardness.This study presents that the maximized hardness and superior strength of in-situ Ti C/Fe alloy composites can be achieved by microstructure control and stoichiometric analysis of the in-situ synthesized Ti C particles,while maintaining the ductility of the composites,compared to those of the unreinforced Fe alloy.Therefore,we anticipate that the in-situ synthesized Ti C/Fe alloy composites with enhanced mechanical properties have great potential in cutting tool,mold and roller material applications. | Junho Lee Dongju Lee Myung Hoon Song Wonhyuk Rhee Ho Jin Ryu Soon Hyung Hong | 2018 | Journal of Materials Science & Technology2018，34，8： | 8 |
| 2 | Multiple-patterning colloidal lithography-implemented scalable manufacturing of heat-tolerant titanium nitride broadband absorbers in the visible to near-infrared显示文摘Broadband perfect absorbers have been intensively researched for decades because of their near-perfect absorption optical property that can be applied to diverse applications. Unfortunately, achieving large-scale and heat-tolerant absorbers has been remained challenging work because of costly and time-consuming lithography methods and thermolability of materials, respectively. Here, we demonstrate a thermally robust titanium nitride broadband absorber with >95% absorption efficiency in the visible and near-infrared region (400–900 nm). A relatively large-scale (2.5 cm × 2.5 cm) absorber device is fabricated by using a fabrication technique of multiple-patterning colloidal lithography. The optical properties of the absorber are still maintained even after heating at the temperatures >600 ∘C. Such a large-scale, heat-tolerant, and broadband near-perfect absorber will provide further useful applications in solar thermophotovoltaics, stealth, and absorption controlling in high-temperature conditions. | Dasol Lee Myeongcheol Go Minkyung Kim Junho Jang Chungryong Choi Jin Kon Kim Junsuk Rho | 2021 | Microsystems & Nanoengineering2021，7，2： | 4 |
| 3 | Molecular Mechanism of the Specificity of Protein Import into Chloroplasts and Mitochondria in Plant Cells显示文摘Plants possess both types of endosymbiotic organelles, chloroplasts and mitochondria. Transit peptides and presequences function as signal sequences for specific import into chloroplasts and mitochondria, respectively. However, how these highly similar signal sequences confer the protein import specificity remains elusive. Here, we show that mitochondrial- or chloroplast-specific import involves two distinct steps, specificity determination and translocation across envelopes, which are mediated by the N-terminal regions and functionally interchangeable C-terminal regions, respectively, of transit peptides and presequences. A domain harboring multiple-arginine and hydrophobic sequence motifs in the N-terminal regions of presequences was identified as the mitochondrial specificity factor. The presence of this domain and the absence of arginine residues in the N-terminal regions of otherwise common targeting signals confers specificity of protein import into mitochondria and chloroplasts, respectively. AtToc159, a chloroplast import receptor, also contributes to determining chloroplast import specificity. We propose that common ancestral sequences were functionalized into mitochondrial- and chloroplast-specific signal sequences by the presence and absence, respectively, of multiple-arginine and hydrophobic sequence motifs in the N-terminal region. | Dong Wook Lee Sumin Lee Junho Lee Seungjin Woo Md.Abdur Razzak Alessandro Vitale Inhwan Hwang | 2019 | Molecular Plant2019，12，7： | 2 |
| 4 | S100A4 released from highly bone-metastatic breast cancer cells plays a critical role in osteolysis显示文摘Bone destruction induced by breast cancer metastasis causes severe complications,including death,in breast cancer patients.Communication between cancer cells and skeletal cells in metastatic bone microenvironments is a principal element that drives tumor progression and osteolysis.Tumor-derived factors play fundamental roles in this form of communication.To identify soluble factors released from cancer cells in bone metastasis,we established a highly bone-metastatic subline of MDA-MB-231 breast cancer cells.This subline(mtMDA)showed a markedly elevated ability to secrete S100A4 protein,which directly stimulated osteoclast formation via surface receptor RAGE.Recombinant S100A4 stimulated osteoclastogenesis in vitro and bone loss in vivo.Conditioned medium from mtMDA cells in which S100A4 was knocked down had a reduced ability to stimulate osteoclasts.Furthermore,the S100A4 knockdown cells elicited less bone destruction in mice than the control knockdown cells.In addition,administration of an anti-S100A4 monoclonal antibody(mAb)that we developed attenuated the stimulation of osteoclastogenesis and bone loss by mtMDA in mice.Taken together,our results suggest that S100A4 released from breast cancer cells is an important player in the osteolysis caused by breast cancer bone metastasis. | Haemin Kim Bongjun Kim Sang Il Kim Hyung Joon Kim Brian YRyu Junho Chung Zang Hee Lee Hong-Hee Kim | 2019 | Bone Research2019，7，4： | 2 |
| 5 | Characterization of parylene deposition process for the passivation of organic light emitting diodes显示文摘 | Taejin Lee Junho Lee Chinho Park | 2002 | Korean Journal of Chemical Engineering2002，，4： | 1 |
| 6 | Deposition of CuInS2 Films by Electrostatic Field Assisted Ultrasonic Spray Pyrolysis显示文摘 | Lee Dong-Yeup Kim JunHo | 2011 | Solar Energy Materials&Solar Cells2011，95，： | 1 |
| 7 | Fabrication of perovskite solar cell with high short-circuit current density(Jsc)using moth-eye structure of SiOx显示文摘The performance of solar cells is determined by three factors:the open-circuit voltage(Voc),short-circuit current density(Jsc),and fill factor(FF).The Voc and FF are determined by the material bandgap and the series/shunt resistance,respectively.However,Jsc is determined by the amount of incident light in addition to the bandgap of the material.In this study,a moth-eye pattern was formed on a glass surface via direct printing to increase the amount of incident light and thus increase Jsc-The moth-eye pattern is a typical antireflection pattern that reduces the reflection by gradually increasing the refractive index.A flat perovskite solar cell(F-PSC)and a moth-eye patterned perovskite solar cell(M-PSC)had Jsc values of 23.70 and 25.50 mA/cm^2,respectively.The power-conversion efficiencies of the F-PSC and M-PSC were 19.81%and 21.77%,respectively. | Sucheol Ju Minseop Byun Minjin Kim Junho Jun Daihong Huh Dong Suk Kim Yimhyun Jo Heon Lee | 2020 | Nano Research2020，13，4： | 1 |
| 8 | Detection of hydrogen peroxide with luminol electrogenerated chemiluminescence at mesoporous platinum electrode in neutral aqueous solution显示文摘 | Jee Hoon Han Junho Jang Byung Kun Kim Han Nim Choi Won-Yong Lee | 2011 | Journal of Electroanalytical Chemistry2011，，1： | 1 |
| 9 | Extraosseous osteosarcoma:Single institutional experience in Korea 显示文摘 | Soohyeon LEE Mi Rae LEE Su Jin LEE Hee Kyung AHN Junho YI Seong Yoon YI | 2010 | Asia-Pacific Journal of Clinical Oncology2010，6，： | 1 |
| 10 | Photolumines cence properties of KSrPO4 : Eu-x(2+), Mn y(2+ ) and KSr (1-x-y) PO4 : Eu-x (2+), Mn-y (2 + ) phosphors for UV-based white LEDs显示文摘 | Jeong Junho Jang Kiwan Lee Ho Sueb | 2009 | Journal of The Korean Physical Society2009，54，6： | 1 |
| 11 | Comparison of autogenous tooth bone graft and synthetic bone graft materials used for bone resorption around implants after crestal approach sinus lifting: a retrospective study 显示文摘 | Young-Kyun Kim Junho Lee Ji-Yong Yun | 2014 | Journal of Periodontal & Implant Science2014，44，5： | 1 |
| 12 | Integral sliding-mode control of a magnetically suspended balance beam:analysis,simulation,and experiment显示文摘 | Lee JunHo Allaire P E | 2001 | IEEE/ASME Transactions on Mechatronics2001，6，3： | 1 |
| 13 | Integral Sliding-mode Control of A Magnetically Suspended Balance Beam:Analysis,Simulation,and Experiment显示文摘 | Lee JunHo Allaire P E | 2001 | IEEE/ASME Transaction on Mechatronics2001，6，3： | 1 |
| 14 | Development of a new biomonitoring method to detect the abnormal activity of daphnia magna using automated grid counter device显示文摘 | Junho Jeon Joon Ha Kim Byung Cheun Lee | 2007 | Science of the Total En- vironment2007，389，2： | 1 |
| 15 | Cytochrome b5 Reductase 1 Triggers Serial Reactions that Lead to Iron Uptake in Plants显示文摘根围使发酸为铁(Fe ) 是必要的举起进植物根。在根围使发酸的血浆膜(下午) H +-ATPases 戏钥匙角色。然而,下午 H +-ATPase 活动怎么被调整在 Fe 缺乏的条件下面提高根 Fe 举起,充分没被理解。这里,我们现在的证据那细胞色素 b5 reductase (CBR1 ) 1 增加不饱和的丰满的酸的层次,它 stimulatePM H +-ATPase 活动并且这样 leadto 根围使发酸。不饱和的丰满的酸(18:2 和 18:3 ) 高级的有的 CBR1-overexpressing (CBR1 公牛) Arabidopsis thaliana 植物,更高级的下午 H +-ATPase 活动,和比野类型的植物的更低的根围 pH。由对比, cbr1loss-of-function 异种植物显示出不饱和的丰满的酸和更低的下午 H +-ATPase 活动的底层但是更高的根围 pH。在 cbr1 的减少的下午 H +-ATPase 活动能是由不饱和的丰满的酸的增加的恢复 invitro。CBR1,丰满的酸 desaturase2 (FAD2 ) ,和丰满的酸 desaturase3 (FAD3 ) 的抄本层次在 Fe 缺乏的条件下面被增加。我们建议 CBR1 在增加不饱和的丰满的酸的层次有一个关键角色,它 activatethe 下午 H +-ATPase 并且这样 reducerhizosphere pH。这反应串联最终支持根 Fe 举起。 | Young Jun Oh Hanul Kim Sung Hee Seo Bae Geun Hwang Yoon Seok Chang Junho Lee Dong Wook Lee Eun Ju Sohn Sang Joon Lee Youngsook Lee Inhwan Hwang | 2016 | Molecular Plant2016，9，4： | 1 |
| 16 | Gastric cancer surgery without drains: A prospective randomized trial显示文摘 | Junuk Kim M.D. Junho Lee M.D. Woo Jin Hyung M.D. Jae Ho Cheong M.D. Jian Chen M.D. Seung Ho Choi M.D. Sung Hoon Noh M.D. Ph.D | 2004 | Journal of Gastrointestinal Surgery2004，，6： | 1 |
| 17 | Use of fuzzy probabiliW theory to assess spalling occurrence in underground openings显示文摘 | KangHyun Lee JunHo Bang InMo Lee | 2013 | International Journal of Rock Mechanics and Mining Sciences2013，64，： | 1 |
| 18 | Massively parallel electro-optic sampling of space-encoded optical pulses for ultrafast multi-dimensional imaging显示文摘High-speed and high-resolution imaging of surface profiles is critical for the investigation of various structures and mechanical dynamics of micro-and nano-scale devices.In particular,recent emergence of various nonlinear,transient and complex mechanical dynamics,such as anharmonic vibrations in mechanical resonators,has necessitated real-time surface deformation imaging with higher axial and lateral resolutions,speed,and dynamic range.However,real-time capturing of fast and complex mechanical dynamics has been challenging,and direct time-domain imaging of displacements and mechanical motions has been a missing element in studying full-field structural and dynamic behaviours.Here,by exploiting the electro-optic sampling with a frequency comb,we demonstrate a line-scan time-of-flight(TOF)camera that can simultaneously measure the TOF changes of more than 1000 spatial coordinates with hundreds megapixels/s pixel-rate and sub-nanometre axial resolution over several millimetres field-of-view.This unique combination of performances enables fast and precise imaging of both complex structures and dynamics in three-dimensional devices and mechanical resonators. | Yongjin Na Hyunsoo Kwak Changmin Ahn Seung Eon Lee Woojin Lee Chu-Shik Kang Jungchul Lee Junho Suh Hongki Yoo Jungwon Kim | 2023 | Light(Science & Applications)2023，12，2： | 1 |
| 19 | Solvent-assisted graphite loading for highly conductive phenolic resin bipolar plates for proton exchange membrane fuel cells显示文摘 | Kang SooJung Kim Dong Ouk Lee JunHo | 2010 | Journal of Power Sources2010，195，12： | 1 |
| 20 | Integral sliding-mode control of a magnetically suspended balance beam: analysis, simulation, and experiment显示文摘 | Lee JunHo Allaire P E | 2001 | IEEE/ASME Transactions on Mechatronics2001，6，3： | 1 |
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