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| WoS | SCOPUS | Document Type | Document Title | Abstract | Authors | Affiliation | ResearcherID (WoS) | AuthorsID (SCOPUS) | Author Email(s) | Journal Name | JCR Abbreviation | ISSN | eISSN | Volume | Issue | WoS Edition | WoS Category | JCR Year | IF | JCR (%) | FWCI | FWCI Update Date | WoS Citation | SCOPUS Citation | Keywords (WoS) | KeywordsPlus (WoS) | Keywords (SCOPUS) | KeywordsPlus (SCOPUS) | Language | Publication Stage | Publication Year | Publication Date | DOI | JCR Link | DOI Link | WOS Link | SCOPUS Link |
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| ○ | ○ | Article | Highly efficient thermal oxidation and cross-linking reaction of catechol functionalized polyacrylonitrile copolymer composites for halogen-free flame retardant | There have been major efforts to make polyacrylonitrile (PAN) flame retardant using halogens, heavy metals, transition metals, and phosphorus-organic compounds. These retardants may reduce the risk of fire, but they also involve high cost, toxicity, and related ecological issues. In an effort to mitigate some of these negative factors, we herein report the development of a green flame-retardant PAN based on bio-inspired dopamine methacrylamide (DMA) co-monomer. This polymer was synthesized through free radical polymerization of AN and acetonide-protected dopamine methacrylamide (ADMA), followed by deprotection of ADMA. Systematic investigation of the structural evolution of P(AN-co-DMA) confirmed that DMA provides a kinetic advantage for initiating the cyclization of PAN at significantly lower temperatures (209 degrees C) as well as for controlling effectively the amount of heat generated. Moreover, the effective radical scavenging capability of DMA, and the formation of a carbonaceous layer on the polymer surface, greatly improved the flame-retardant performance of PAN, without the use of conventional additives. This resulted in low heat-release capacity (HRC) and high limiting oxygen index (LOI) values of 58 Jg(-1) K-1 and 37% (superior to those values of Nomex (R)), respectively. The thermal oxidative stabilization (TOS) process and flame retarding properties of PAN/GO composites were further investigated. TOS process and flame retarding mechanism were found to be influenced by ionic interaction and hydrogen bonding between polymer and nanomaterial. This work opens up a facile and sustainable methodology for the design of environmentally friendly and high-performance flame retardants and composites. | Nam, Ki-Ho; Jin, Jeong-Un; Lee, Jae Hyeok; Kim, Jongho; Chung, Yong Sik; Yeo, Hyeonuk; You, Nam-Ho; Ku, Bon-Cheol | KIST, Inst Adv Composite Mat, Carbon Composite Mat Res Ctr, Wonju 55324, Jeonbuk, South Korea; Chonbuk Natl Univ, Dept Chem, Jeonju 561756, Jeonbuk, South Korea; Chonbuk Natl Univ, Dept Organ Mat & Fiber Engn, Jeonju 561756, Jeonbuk, South Korea; Kyungpook Natl Univ, Dept Chem Educ, Daegu 41566, South Korea | Yeo, Hyeonuk/AHE-0397-2022; Kim, Jongho/AAV-3501-2020; yeo, hyeonuk/G-7890-2017; Ku, Bon-Cheol/I-7493-2019 | 55553181500; 57203890712; 57204761837; 57202767428; 19033753400; 55324816500; 55204428300; 37077515100 | cnt@kist.re.kr; | COMPOSITES PART B-ENGINEERING | COMPOS PART B-ENG | 1359-8368 | 1879-1069 | 184 | SCIE | ENGINEERING, MULTIDISCIPLINARY;MATERIALS SCIENCE, COMPOSITES | 2020 | 9.078 | 0.6 | 1.67 | 2025-06-25 | 34 | 33 | Polyacrylonitrile; Thermal oxidation; Flame retardant; Catechol; Graphene oxide | CARBON NANOTUBES; GRAPHENE SHEETS; STABILIZATION; EVOLUTION; POLYMER; FIBERS; DEGRADATION; CYCLIZATION; MECHANISM; RADICALS | Catechol; Flame retardant; Graphene oxide; Polyacrylonitrile; Thermal oxidation | Additives; Amines; Biomimetics; Crosslinking; Free radical polymerization; Free radicals; Graphene; Graphene oxide; Heavy metals; Hydrogen bonds; Neurophysiology; Phenols; Polyacrylonitriles; Thermooxidation; Transition metals; Catechol; Conventional additives; Halogen-free flame retardant; Heat release capacities; Oxidative stabilization; Polyacrylonitrile (PAN); Polyacrylonitrile copolymers; Thermal oxidation; Flame retardants | English | 2020 | 2020-03-01 | 10.1016/j.compositesb.2019.107687 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Microstructural characteristics of AZ31 alloys rolled at room and cryogenic temperatures and their variation during annealing | This study investigates the microstructural characteristics of AZ31 Mg alloys rolled at room temperature (RT) and cryogenic temperature (CT) and the variation in their microstructure and hardness during subsequent annealing. Cryorolling induces the formation of more side cracks than does RT rolling, because of the reduction in the ability of the material to accommodate deformation at CT. Numerous {10-11} contraction and {10-11}-{10-12} double twins are formed in both the material rolled at RT and that rolled at CT, because the grains of the initial material are favorably oriented for {10-11} twinning under rolling. The RT-rolled material has a higher dislocation density than the cryorolled material, and more twins are uniformly distributed throughout the former material. As a result, static recrystallization during subsequent annealing is more pronounced in the RT-rolled material, which results in the formation of a highly recrystallized homogeneous microstructure after annealing. In contrast, the formed twins are predominantly present along the shear bands in the cryorolled material, as a result of which this material has an inhomogeneous bimodal structure containing a large amount of coarse unrecrystallized grains after annealing. The hardness of the annealed RT-rolled material is higher than that of the annealed cryorolled material owing to the finer grain structure of the former. (C) 2020 Published by Elsevier B.V. on behalf of Chongqing University. | Lee, Sang Won; Kim, Sang-Hoon; Park, Sung Hyuk | Kyungpook Natl Univ, Sch Mat Sci & Engn, Daegu 41566, South Korea | Kim, Sang-Hoon/AAD-8797-2021; Park, Sung-Hyuk/AAE-6726-2022; Lee, Sangwon/AAJ-7850-2020 | 57201375104; 57206878833; 54786002500 | sh.park@knu.ac.kr; | JOURNAL OF MAGNESIUM AND ALLOYS | J MAGNES ALLOY | 2213-9567 | 8 | 2 | SCIE | METALLURGY & METALLURGICAL ENGINEERING | 2020 | 10.088 | 0.6 | 2.04 | 2025-06-25 | 35 | 37 | Magnesium; Rolling; Cryogenic temperature; Annealing; Microstructure | MECHANICAL-PROPERTIES; MAGNESIUM ALLOY; MG ALLOY; DEFORMATION; BEHAVIOR; TEXTURE; DUCTILITY; ZN; LOCALIZATION; FORMABILITY | Annealing; Cryogenic temperature; Magnesium; Microstructure; Rolling | Annealing; Bands; Characteristics; Deformation; Hardness; Microstructure; Rolling; Temperature; Cryogenics; Hardness; Magnesium alloys; Microstructure; Recrystallization (metallurgy); Rolling; Room temperature; % reductions; Annealing; AZ31 alloy; AZ31 Mg alloys; Cryo-rolling; Cryogenic temperatures; High dislocation density; Microstructural characteristics; Rolling; Side-crack; Annealing | English | 2020 | 2020-06 | 10.1016/j.jma.2020.03.003 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Piezoelectric BaTiO3 microclusters and embossed ZnSnO3 microspheres-based monolayer for highly-efficient and flexible composite generator | As a permanent power source for self-powered electronics, piezoelectric energy harvesters (PEHs), which convert waste mechanical energy into electrical energy, have attracted considerable interest. We herein developed a high-performance PEH by employing a piezoelectric BaTiO3 microclusters (MCs) composite and a ZnSnO3 mi-crospheres (MSs)-based pressure concentrator. The piezoelectric composite film and an embossed pressure concentrator were fabricated by optimized bar-coating and unidirectional rubbing processes, respectively. The final energy device, fabricated by stacking a ZnSnO3 MSs-based embossed pressure concentrator onto a BaTiO3 MCs-based piezoelectric composite, harvested output signals of similar to 206 V and similar to 24 mu A under an applied pressure of 0.27 MPa, which are significantly improved results compared to previously reported composite-type PEHs. Furthermore, multiphysics-based finite element analysis was performed to support the hypothesis of effective piezo-potential distribution by adopting the BaTiO3 MCs embedded in polymeric matrix and attaching the ZnSnO3 MSs-monolayer onto the piezoelectric composite. This technology represents a new approach with significant advantages for fabricating high-output composite-based PEHs. | Park, Hongbeom; Hyeon, Dong Yeol; Jung, Minwoo; Park, Kwi-Il; Park, Jinsub | Hanyang Univ, Dept Elect & Comp Engn, 222 Wangsimni Ro, Seoul 04763, South Korea; Kyungpook Natl Univ, Sch Mat Sci & Engn, 80 Daehak Ro, Daegu 41566, South Korea | Hyeon, Dong Yeol/HNR-5711-2023; Park, Kwiil/LKN-9445-2024; Park, Jinsub/P-1604-2015 | 57219539648; 57209099464; 57219530208; 35280874200; 35332660000 | kipark@knu.ac.kr;jinsubpark@hanyang.ac.kr; | COMPOSITES PART B-ENGINEERING | COMPOS PART B-ENG | 1359-8368 | 1879-1069 | 203 | SCIE | ENGINEERING, MULTIDISCIPLINARY;MATERIALS SCIENCE, COMPOSITES | 2020 | 9.078 | 0.6 | 0.91 | 2025-06-25 | 21 | 22 | Piezoelectric; BaTiO3 cluster; Microsphere; Energy harvesting; Self-powered | NANOCOMPOSITE GENERATOR; LARGE-AREA; THIN-FILM; LEAD-FREE; PERFORMANCE; NANOGENERATOR; TRANSPARENT; PARTICLES | BaTiO<sub>3</sub> cluster; Energy harvesting; Microsphere; Piezoelectric; Self-powered | Barium titanate; Composite films; Concentration (process); Microspheres; Monolayers; Piezoelectric materials; Piezoelectricity; Polymer matrix composites; Zinc compounds; Applied pressure; Electrical energy; Flexible composites; Mechanical energies; Piezoelectric composite; Piezoelectric energy harvesters; Polymeric matrices; Potential distributions; Tin compounds | English | 2020 | 2020-12-15 | 10.1016/j.compositesb.2020.108476 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Tailoring strength-ductility balance of caliber-rolled AZ31 Mg alloy through subsequent annealing | Recently, multi-pass caliber rolling has been shown to be effective for Mg alloys. This study investigated the effect of subsequent annealing on the mechanical properties of a caliber-rolled AZ31 Mg alloy to modulate the strength-ductility relationship. This annealing gave rise to different trends in mechanical properties depending on the temperature regime. Low-temperature annealing (T 473 K) caused a simultaneous deterioration in strength, hardness, and ductility with increasing annealing temperature. These differences are discussed in terms of the varying microstructural features under the different investigated annealing regimes. (c) 2020 Published by Elsevier B.V. on behalf of Chongqing University. | Kong, Taein; Kwak, Byung Je; Kim, Jonghyun; Lee, Jeong Hun; Park, Sung Hyuk; Kim, Ji Hoon; Moon, Young Hoon; Yoon, Hyun Sik; Lee, Taekyung | Pusan Natl Univ, Sch Mech Engn, Busan 46241, South Korea; Korea Inst Ind Technol, Adv Forming Proc R&D Grp, Ulsan 44413, South Korea; Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China; Kyungpook Natl Univ, Sch Mat Sci & Engn, Daegu 41566, South Korea; Pusan Natl Univ, Dept Naval Architecture & Ocean Engn, Busan 46241, South Korea | Moon, Young/T-7404-2019; KIM, Hyeon-Joong/C-4448-2011; Lee, Taekyung/JJD-6006-2023; Park, Sung-Hyuk/AAE-6726-2022; Lee, Jeong Hun/KFS-8195-2024 | 57209463891; 57209463503; 55720197700; 54785958500; 54786002500; 57207436755; 13005372400; 7402990146; 55386632500 | taeklee@pnu.ac.kr; | JOURNAL OF MAGNESIUM AND ALLOYS | J MAGNES ALLOY | 2213-9567 | 8 | 1 | SCIE | METALLURGY & METALLURGICAL ENGINEERING | 2020 | 10.088 | 0.6 | 3.19 | 2025-06-25 | 66 | 62 | AZ31 Mg alloy; Caliber rolling; Annealing; Grain growth; Mechanical improvement; Twinning | MAGNESIUM ALLOY; MICROSTRUCTURAL EVOLUTION; MECHANICAL-BEHAVIOR; STRAIN DISTRIBUTION; TENSILE PROPERTIES; TEXTURE EVOLUTION; GRAIN-REFINEMENT; MG-3AL-1ZN ALLOY; DEPENDENCE; FORMABILITY | Annealing; AZ31 Mg alloy; Caliber rolling; Grain growth; Mechanical improvement; Twinning | Annealing; Deterioration; Ductility; Economic and social effects; Grain growth; Hardness; High strength alloys; Rolling; Temperature; Twinning; Annealing temperatures; AZ31 Mg alloys; Caliber rolling; High-temperature annealing; Low temperature annealing; Mechanical improvement; Microstructural features; Strength ductility balance; Magnesium alloys | English | 2020 | 2020-03 | 10.1016/j.jma.2019.11.005 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Editorial Material | Disposable syringe punching: An aseptic alternative to a comedo extractor | Kim, Jun Young | Kyungpook Natl Univ, Kyungpook Natl Univ Hosp, Sch Med, Dept Dermatol, Daegu, South Korea | 35310922800 | 198kjy@hanmail.net; | JOURNAL OF THE AMERICAN ACADEMY OF DERMATOLOGY | J AM ACAD DERMATOL | 0190-9622 | 1097-6787 | 83 | 3 | SCIE | DERMATOLOGY | 2020 | 11.527 | 0.7 | 0.39 | 2025-06-25 | 2 | 4 | Acne Vulgaris; Cosmetic Techniques; Disposable Equipment; Humans; Syringes; Treatment Outcome; Article; comedo; dermatologist; epidermis; extraction; human; incision; priority journal; acne vulgaris; devices; disposable equipment; esthetic surgery; syringe; treatment outcome | English | 2020 | 2020-09 | 10.1016/j.jaad.2019.11.062 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||||
| ○ | ○ | Article | Performance-limiting nanoscale trap clusters at grain junctions in halide perovskites | Halide perovskite materials have promising performance characteristics for low-cost optoelectronic applications. Photovoltaic devices fabricated from perovskite absorbers have reached power conversion efficiencies above 25 per cent in single-junction devices and 28 per cent in tandem devices(1,2). This strong performance (albeit below the practical limits of about 30 per cent and 35 per cent, respectively(3)) is surprising in thin films processed from solution at low-temperature, a method that generally produces abundant crystalline defects(4). Although point defects often induce only shallow electronic states in the perovskite bandgap that do not affect performance(5), perovskite devices still have many states deep within the bandgap that trap charge carriers and cause them to recombine non-radiatively. These deep trap states thus induce local variations in photoluminescence and limit the device performance(6). The origin and distribution of these trap states are unknown, but they have been associated with light-induced halide segregation in mixed-halide perovskite compositions(7) and with local strain(8), both of which make devices less stable(9). Here we use photoemission electron microscopy to image the trap distribution in state-of-the-art halide perovskite films. Instead of a relatively uniform distribution within regions of poor photoluminescence efficiency, we observe discrete, nanoscale trap clusters. By correlating microscopy measurements with scanning electron analytical techniques, we find that these trap clusters appear at the interfaces between crystallographically and compositionally distinct entities. Finally, by generating time-resolved photoemission sequences of the photo-excited carrier trapping process(10,11), we reveal a hole-trapping character with the kinetics limited by diffusion of holes to the local trap clusters. Our approach shows that managing structure and composition on the nanoscale will be essential for optimal performance of halide perovskite devices. | Doherty, Tiarnan A. S.; Winchester, Andrew J.; Macpherson, Stuart; Johnstone, Duncan N.; Pareek, Vivek; Tennyson, Elizabeth M.; Kosar, Sofiia; Kosasih, Felix U.; Anaya, Miguel; Abdi-Jalebi, Mojtaba; Andaji-Garmaroudi, Zahra; Wong, E. Laine; Madeo, Julien; Chiang, Yu-Hsien; Park, Ji-Sang; Jung, Young-Kwang; Petoukhoff, Christopher E.; Divitini, Giorgio; Man, Michael K. L.; Ducati, Caterina; Walsh, Aron; Midgley, Paul A.; Dani, Keshav M.; Stranks, Samuel D. | Univ Cambridge, Cavendish Lab, Cambridge, England; Okinawa Inst Sci & Technol Grad Univ, Femtosecond Spect Unit, Onna Son, Japan; Univ Cambridge, Dept Mat Sci & Met, Cambridge, England; Imperial Coll London, Dept Mat, London, England; Yonsei Univ, Dept Mat Sci & Engn, Seoul, South Korea; Univ Cambridge, Dept Chem Engn & Biotechnol, Cambridge, England; UCL, Inst Mat Discovery, London, England; Kyungpook Natl Univ, Dept Phys, Daegu, South Korea | Wong, E/C-1365-2015; Chiang, Yu-Hsien/HJG-9580-2022; Man, Ka Lun, Michael/B-7639-2015; Divitini, Giorgio/I-4007-2019; Anaya, Miguel/I-6926-2013; Walsh, Aron/A-7843-2008; Stranks, Samuel/M-7837-2015; Jung, Young-Kwang/U-4889-2019; Tennyson, Beth/HGA-3750-2022; Jalebi, Mojtaba/V-1405-2017; Ka Lun, Michael/AAS-2443-2021; Petoukhoff, Christopher/D-6794-2017; Wong, E Laine/C-1365-2015; Johnstone, Duncan/N-5075-2016; Dani, Keshav/B-7490-2015; Ducati, Caterina/N-3733-2013; Abdi-Jalebi, Mojtaba/V-1405-2017; Kosasih, Felix/AAK-3934-2020; Pareek, Vivek/L-9673-2015; Park, Ji-Sang/F-9944-2010 | 57208708664; 56039790300; 57209567734; 57192694741; 57194537793; 56429299900; 57209580192; 57201094005; 56510297100; 55864987800; 57022043200; 57191493133; 35230500000; 57188768943; 36671796300; 57072313300; 55776283600; 14019558800; 56709347600; 6603883362; 35315151400; 7006353722; 8091400400; 35224069200 | kmdani@oist.jp;sds65@cam.ac.uk; | NATURE | NATURE | 0028-0836 | 1476-4687 | 580 | 7803 | SCIE | MULTIDISCIPLINARY SCIENCES | 2020 | 49.962 | 0.7 | 10.68 | 2025-06-25 | 330 | 324 | NONRADIATIVE LOSSES; SEGREGATION; DEFECTS; IMPACT; STATES | halide; nanomaterial; perovskite; absorbance; diffusion; electrochemistry; film; halide; nanomaterial; performance assessment; perovskite; reaction kinetics; Article; chemical composition; chemical structure; crystallography; diffusion; electron microscopy; grain junction; nanoscale trap cluster; photoemission electron microscopy; photoluminescence; physical parameters; priority journal; scanning transmission electron microscopy | English | 2020 | 2020-04-16 | 10.1038/s41586-020-2184-1 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Probing the core of the strong nuclear interaction | High-energy electron scattering that can isolate pairs of nucleons in high-momentum configurations reveals a transition to spin-independent scalar forces at small separation distances, supporting the use of point-like nucleon models to describe dense nuclear systems. The strong nuclear interaction between nucleons (protons and neutrons) is the effective force that holds the atomic nucleus together. This force stems from fundamental interactions between quarks and gluons (the constituents of nucleons) that are described by the equations of quantum chromodynamics. However, as these equations cannot be solved directly, nuclear interactions are described using simplified models, which are well constrained at typical inter-nucleon distances(1-5) but not at shorter distances. This limits our ability to describe high-density nuclear matter such as that in the cores of neutron stars(6). Here we use high-energy electron scattering measurements that isolate nucleon pairs in short-distance, high-momentum configurations(7-9), accessing a kinematical regime that has not been previously explored by experiments, corresponding to relative momenta between the pair above 400 megaelectronvolts per c (c, speed of light in vacuum). As the relative momentum between two nucleons increases and their separation thereby decreases, we observe a transition from a spin-dependent tensor force to a predominantly spin-independent scalar force. These results demonstrate the usefulness of using such measurements to study the nuclear interaction at short distances and also support the use of point-like nucleon models with two- and three-body effective interactions to describe nuclear systems up to densities several times higher than the central density of the nucleus. | Schmidt, A.; Pybus, J. R.; Weiss, R.; Segarra, E. P.; Hrnjic, A.; Denniston, A.; Hen, O.; Piasetzky, E.; Weinstein, L. B.; Barnea, N.; Strikman, M.; Larionov, A.; Higinbotham, D.; Schmidt, A.; Pybus, J. R.; Weiss, R.; Segarra, E. P.; Hrnjic, A.; Denniston, A.; Hen, O.; Piasetzky, E.; Weinstein, L. B.; Barnea, N.; Strikman, M.; Larionov, A.; Higinbotham, D.; Adhikari, S.; Amaryan, M.; Angelini, G.; Asryan, G.; Atac, H.; Avakian, H.; Gayoso, C. Ayerbe; Baashen, L.; Barion, L.; Bashkanov, M.; Battaglieri, M.; Beck, A.; Bedlinskiy, I.; Benmokhtar, F.; Bianconi, A.; Biselli, A. S.; Bossu, F.; Boiarinov, S.; Brahim, M.; Briscoe, W. J.; Brooks, W.; Burkert, V. D.; Cao, F.; Carman, D. S.; Carvajal, J. C.; Celentano, A.; Chatagnon, P.; Chetry, T.; Ciullo, G.; Clark, L.; Cohen, E.; Cole, P. L.; Contalbrigo, M.; Crede, V.; Cruz-Torres, R.; D'Angelo, A.; Dashyan, N.; De Vita, R.; De Sanctis, E.; Defurne, M.; Deur, A.; Diehl, S.; Djalali, C.; Duer, M.; Dugger, M.; Dupre, R.; Egiyan, H.; Ehrhart, M.; El Alaoui, A.; El Fassi, L.; Eugenio, P.; Filippi, A.; Forest, T. A.; Gavalian, G.; Gilad, S.; Gilfoyle, G. P.; Giovanetti, K. L.; Girod, F. X.; Giuseppe, C.; Glazier, D. I.; Golovatch, E.; Gothe, R. W.; Griffioen, K. A.; Guo, L.; Hafidi, K.; Hakobyan, H.; Hanretty, C.; Harrison, N.; Hattawy, M.; Hauenstein, F.; Hayward, T. B.; Hicks, K.; Holtrop, M.; Ilieva, Y.; Illari, I.; Ireland, D.; Ishkanov, B. S.; Isupov, E. L.; Jenkins, D.; Jo, H. S.; Joo, K.; Keller, D.; Khachatryan, M.; Khanal, A.; Khandaker, M.; Kim, C. W.; Kim, W.; Klein, F. J.; Korover, I.; Kubarovsky, V.; Lanza, L.; Leali, M.; Lenisa, P.; MacGregor, I. J. D.; Marchand, D.; Markov, N.; Marsicano, L.; Mascagna, V.; Beck, S. May-Tal; McKinnon, B.; Mirazita, M.; Mokeev, V.; Camacho, C. Munoz; Mustafa, B.; Nadel-Turonski, P.; Nanda, S.; Niccolai, S.; Niculescu, G.; Osipenko, M.; Ostrovidov, A. I.; Paolone, M.; Pappalardo, L. L.; Paremuzyan, R.; Park, K.; Pasyuk, E.; Patsyuk, M.; Phelps, W.; Pogorelko, O.; Price, J. W.; Prok, Y.; Protopopescu, D.; Ripani, M.; Riser, D.; Rizzo, A.; Rosner, G.; Rossi, P.; Sabatie, F.; Salgado, C.; Schmookler, B.; Schumacher, R. A.; Sharabian, Y. G.; Shrestha, U.; Skorodumina, Iu.; Sokhan, D.; Soto, O.; Sparveris, N.; Stepanyan, S.; Strakovsky, I. I.; Strauch, S.; Tan, J. A.; Tyler, N.; Ungaro, M.; Venturelli, L.; Voskanyan, H.; Voutier, E.; Wang, R.; Watts, D. P.; Wei, X.; Wood, M. H.; Zachariou, N.; Zhang, J.; Zhao, Z. W.; Zheng, X. | MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA; George Washington Univ, Washington, DC USA; Hebrew Univ Jerusalem, Jerusalem, Israel; Tel Aviv Univ, Tel Aviv, Israel; Old Dominion Univ, Norfolk, VA USA; Penn State Univ, University Pk, PA 16802 USA; Giersch Sci Ctr, Frankfurt Inst Adv Studies, Frankfurt, Germany; Thomas Jefferson Natl Accelerator Facil, Newport News, VA USA; Florida Int Univ, Miami, FL 33199 USA; Yerevan Phys Inst, Yerevan, Armenia; Temple Univ, Philadelphia, PA 19122 USA; Coll William & Mary, Williamsburg, VA USA; Ist Nazl Fis Nucl, Sez Ferrara, Ferrara, Italy; Univ York, York, N Yorkshire, England; Ist Nazl Fis Nucl, Sez Genova, Genoa, Italy; Natl Res Ctr, Kurchatov Inst ITEP, Moscow, Russia; Duquesne Univ, Pittsburgh, PA 15219 USA; Univ Brescia, Brescia, Italy; Ist Nazl Fis Nucl, Sez Pavia, Pavia, Italy; Fairfield Univ, Fairfield, CT 06430 USA; Carnegie Mellon Univ, Pittsburgh, PA 15213 USA; Univ Paris Saclay, IRFU, CEA, Gif Sur Yvette, France; Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA; Univ Tecn Federico Santa Maria, Valparaiso, Chile; Univ Connecticut, Storrs, CT USA; Univ Paris Saclay, Univ Paris Sud, Inst Phys Nucl, CNRS,IN2P3, Orsay, France; Mississippi State Univ, Mississippi State, MS 39762 USA; Univ Ferrara, Ferrara, Italy; Univ Glasgow, Glasgow, Lanark, Scotland; Lamar Univ, Beaumont, TX 77710 USA; Idaho State Univ, Pocatello, ID 83209 USA; Catholic Univ Amer, Washington, DC 20064 USA; Florida State Univ, Tallahassee, FL 32306 USA; Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Rome, Italy; Univ Roma Tor Vergata, Rome, Italy; Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy; Ohio Univ, Athens, OH 45701 USA; Univ South Carolina, Columbia, SC 29208 USA; Arizona State Univ, Tempe, AZ USA; Ist Nazl Fis Nucl, Sez Torino, Turin, Italy; Univ New Hampshire, Durham, NH 03824 USA; Univ Richmond, Richmond, VA 23173 USA; James Madison Univ, Harrisonburg, VA 22807 USA; Lomonosov Moscow State Univ, Skobeltsyn Inst Nucl Phys, Moscow, Russia; Virginia Tech, Blacksburg, VA USA; Kyungpook Natl Univ, Daegu, South Korea; Univ Virginia, Charlottesville, VA USA; Norfolk State Univ, Norfolk, VA USA; Rensselaer Polytech Inst, Troy, NY USA; Univ Insubria, Como, Italy; Calif State Univ Dominguez Hills, Carson, CA 90747 USA; Canisius Coll, Buffalo, NY 14208 USA; Duke Univ, Durham, NC USA; Idaho State Univ, Pocatello, ID 83209 USA; Univ Brescia, Brescia, Italy | ; Isupov, Evgeny/J-2976-2012; Battaglieri, Marco/I-6262-2018; Pappalardo, Luciano/AAB-2380-2021; Filippi, Alessandra/I-9530-2012; Hyde, Charles/W-9190-2018; Mascagna, Valerio/HLQ-1103-2023; Zheng, Xiaochao/LZH-2152-2025; MacGregor, Ian/D-4072-2011; Bozzi, Giuseppe/H-7283-2017; Alaoui, Ahmed/B-4638-2015; Bashkanov, Mikhail/R-1333-2018; Protopopescu, Dan/D-5645-2012; Adikaram, Dasuni/D-1539-2016; Khanal, Aaditya/ABI-5610-2020; Dugger, Michael/AAR-5206-2021; Celentano, Andrea/JFJ-2728-2023; Rizzo, Alessandro/C-6397-2014; Brooks, William/C-8636-2013; Baashen, Lamya/KRP-2733-2024; Barnea, Nir/F-8960-2011; D'Angelo, Annalisa/A-2439-2012; Weiss, Ram/AAC-3964-2020; Pallares, Esteve/ABG-7077-2020; Sabatie, Franck/K-9066-2015; Holtrop, Maurik/A-9017-2010; Filippi, Alessandra/AAE-9322-2020; Schumacher, Reinhard/K-6455-2013; Jo, Hyon-Suk/HGC-7070-2022; Ciullo, Giuseppe/X-6539-2018; Deur, Alexandre/H-9778-2019; Osipenko, Mikhail/N-8292-2015; Larionov, Alexey/HJA-3353-2022; Higinbotham, Douglas/J-9394-2014; Rosner, Guenther/ABB-5516-2021; Sparveris, Nikolaos/C-4751-2008; Zhang, Jixie/A-1461-2016; Lanza, Lucilla/E-6479-2017; Denniston, Alastair/ABD-1238-2020; Marsicano, Luca/KPB-4594-2024; McKinnon, Bryan/J-2928-2018; Hakobyan, Hayk/JUF-6461-2023 | 57212416423; 57208803110; 57199318841; 57203683484; 57208798957; 57208800708; 36993853800; 6602115900; 35377851100; 7004424181; 59646144500; 57210953468; 6701771992; 57198983235; 59918654800; 7006704508; 56258456900; 35277104000; 57193121212; 35277128500; 57210826461; 7006613415; 15755099700; 57215197650; 23033257000; 6506107717; 7004520678; 57202886386; 35277104100; 57218527298; 7102358422; 35227021700; 35725064700; 35277071300; 57215193658; 7005532059; 35400106000; 7004440244; 57195399898; 7005853901; 57214364802; 54392656300; 57202987431; 57189889203; 6603765308; 36022213600; 57102536700; 35227101500; 7003468594; 6602900241; 57201114991; 58177961800; 6507987909; 59345445900; 7006437620; 56272524200; 6604025441; 57217562965; 35374416600; 57203386328; 35227159100; 35069234100; 35227171500; 57193421717; 26535686800; 14041647600; 9845148400; 8695796100; 35227189500; 35227304900; 7004297536; 6603686320; 6701352818; 35227280900; 57215193503; 8258896400; 35227273800; 7102183142; 7004574641; 25948329000; 34570410000; 57208726428; 17433911800; 52863649900; 56115055200; 55382488300; 57206656408; 22966851900; 7005060869; 35227424100; 57214820710; 57209456981; 7801347219; 35227460400; 57237808500; 35227429400; 57202638465; 7102814361; 57193668661; 57208691543; 13405022500; 59817767500; 35227558900; 57214026240; 24437436600; 6701392158; 56047689500; 6507646370; 56273696800; 7006040977; 7004889588; 35227617100; 57193833269; 22135531000; 7801635822; 35227669300; 35227656900; 7004546205; 12244632700; 57215190452; 6603294089; 58304644200; 35227746500; 35227763200; 6701825145; 6603112367; 22986163400; 7004207376; 36085149700; 55722196400; 35227791700; 54420993300; 56362788600; 8903140900; 55329126900; 35227871000; 35227881200; 7003515879; 57194526421; 56589489300; 7102538331; 58092074700; 35227896300; 35228024200; 55803697000; 7201653195; 35227996900; 57213706614; 55834228500; 16065283100; 55787422600; 6507906118; 7004491103; 22969481600; 7004321986; 57200599233; 57203722948; 35228099400; 22136651400; 6504161736; 6603350317; 57202991788; 7201539565; 13204321200; 57201559118; 36836386600; 57215210642; 57216598335; 13002614100 | hen@mit.edu; | NATURE | NATURE | 0028-0836 | 1476-4687 | 578 | 7796 | SCIE | MULTIDISCIPLINARY SCIENCES | 2020 | 49.962 | 0.7 | 2.4 | 2025-06-25 | 70 | 72 | SHORT-RANGE CORRELATIONS; SPECTRAL-FUNCTION; ENERGY; DEPENDENCE; MODEL | chemical binding; electron; equation; momentum; probe; quantum mechanics; article; neutron; nucleon; vacuum; velocity | English | 2020 | 2020-02 | 10.1038/s41586-020-2021-6 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Validity and reliability of itch assessment scales for chronic pruritus in adults: A prospective multicenter study | Background: Several tools can provide a reliable and accurate evaluation of pruritus, including the visual analog scale (VAS), numeric rating scale (NRS), verbal rating scale (VRS), and multidimensional questionnaires such as the Itch Severity Scale (ISS). However, no single method is considered a gold standard. Objective: We evaluated the validity and reliability of VAS, NRS, VRS, and ISS and their correlation with a pruritus-specific quality of life instrument, ItchyQoL. Methods: A total of 419 patients (215 men and 204 women) with chronic pruritus (mean age, 46.58 years) recorded their pruritus intensity on VAS, NRS, VRS, and ISS. Retest reliability was analyzed in a second assessment 3 hours after the initial assessment. All participants answered ItchyQoL. Results: A strong correlation between VAS, NRS, and VRS was found. ISS showed a low intercorrelation validity with these tools. However, ISS was more strongly correlated with ItchyQoL. The retest reliability scores were similar for VAS, NRS, and VRS but lower than the scores obtained for ISS. Limitations: Limitations include patient heterogeneity and recall bias. Conclusion: The assessment of pruritus is challenging because of the subjective symptoms and the multifactorial nature. Therefore, more studies are needed to determine the best strategy to assess itch intensity. | Jang, Yong Hyun; Kim, Seok Min; Eun, Dong Hyuk; Park, Kyung Duck; Park, Gyeong-Hun; Kim, Byung-Soo; Li, Kapsok; Park, Chang Ook; Kim, Hye One; Kim, Hei Sung; Jang, Min Soo; Doh, Eun Jin; Lee, Dong Hun; Lee, Yang Won; Kim, Do Won; Kim, Seong-Jin | Kyungpook Natl Univ, Kyungpook Natl Univ Hosp, Sch Med, Dept Dermatol, Daegu, South Korea; Hallym Univ, Coll Med, Dongtan Sacred Heart Hosp, Hwaseong, South Korea; Pusan Natl Univ, Sch Med, Busan, South Korea; Chung Ang Univ, Coll Med, Seoul, South Korea; Yonsei Univ, Coll Med, Cutaneous Biol Res Inst, Severance Hosp, Seoul, South Korea; Hallym Univ, Coll Med, Kangnam Sacred Heart Hosp, Seoul, South Korea; Catholic Univ Korea, Incheon St Marys Hosp, Dept Biomed & Hlth Sci, Seoul, South Korea; Kosin Univ, Coll Med, Busan, South Korea; Seoul Natl Univ, Coll Med, Seoul, South Korea; Konkuk Univ, Sch Med, Seoul, South Korea; Chonnam Natl Univ, Sch Med, Gwangju, South Korea | ; Kim, Seong/AAV-1869-2020; Kim, Yong Joon/IQS-7291-2023; Kim, Sunuk/KJM-5211-2024; Lee, Jae-Hyun/ABE-3803-2020; Kim, Chang Gon/IAP-6721-2023; Lee, Dong Hun/AAS-6021-2021 | 57016046400; 57200860205; 57190585603; 55767995700; 24460704500; 55726523900; 57113935300; 8852466600; 8659715100; 9247821100; 56588449100; 56946766600; 55649570908; 15033490400; 57206101464; 57070811700 | yhjang@knu.ac.kr;seongkim@chonnam.ac.kr; | JOURNAL OF THE AMERICAN ACADEMY OF DERMATOLOGY | J AM ACAD DERMATOL | 0190-9622 | 82 | 1 | SCIE | DERMATOLOGY | 2020 | 11.527 | 0.7 | 1.44 | 2025-06-25 | 20 | 20 | atopic dermatitis; eczema; itch; pruritus; quality of life; urticaria | VISUAL ANALOG SCALE; VERBAL RATING-SCALE; INSTRUMENT; SEVERITY; BURDEN | atopic dermatitis; eczema; itch; pruritus; quality of life; urticaria | Adult; Age Factors; Chronic Disease; Cohort Studies; Female; Humans; Male; Middle Aged; Prospective Studies; Pruritus; Quality of Life; Reproducibility of Results; Risk Assessment; Severity of Illness Index; Sex Factors; Sickness Impact Profile; Surveys and Questionnaires; Visual Analog Scale; Article; chronic disease; concurrent validity; correlation analysis; correlation coefficient; disease severity assessment; female; human; itch related quality of life scale; itch severity scale; major clinical study; male; numeric rating scale; priority journal; pruritus; quality of life; quality of life assessment; rating scale; recall bias; test retest reliability; verbal rating scale; visual analog scale; Wilcoxon signed ranks test; adult; age; chronic disease; clinical trial; cohort analysis; middle aged; multicenter study; prospective study; pruritus; quality of life; questionnaire; reproducibility; risk assessment; severity of illness index; sex factor; Sickness Impact Profile; visual analog scale | English | 2020 | 2020-01 | 10.1016/j.jaad.2019.06.043 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Electrocatalytic arsenite oxidation in bicarbonate solutions combined with CO2 reduction to formate | Sunlight-driven water-energy nexus technologies are receiving increasing attention. This study presents a hybrid electrochemical system that catalyzes the oxidation of As(III) to As(V) with a nanoparticulate TiO2 electrocatalyst (Ti/Ir1-xTaxOy/TiO2; denoted as an n-TEC) while simultaneously converting CO2 to formate on a Bi electrode in aqueous bicarbonate solutions at circum-neutral pH. Linear sweep voltanunograms of n-TEC exhibit a specific As(III) oxidation peak (E-p,E-As), at which the Faradaic efficiency (FE) of As(V) production is similar to 100 %. However, the application of a potential higher than the peak (E > E-p,E-As) leads to a significant decrease in the FE due to water oxidation. Upon the addition of chloride, the oxidation of water and chloride occur competitively, producing reactive chlorine species responsible for mediating the oxidation of As(III). The Bi electrodes synthesized via the electrodeposition of Bi3+ typically show high FEs of > 80 % for formate production in bicarbonate solution purged with CO2. The addition of chloride significantly enhances the current while maintaining the FE. The n-TEC catalyst and Bi electrodes are paired in a single device equipped with a membrane, and significant effort is made to achieve the same FEs in both the anodic and cathodic reactions as in their halfreactions. Finally, the optimized n-TEC/Bi pair is coupled with a low-cost, commercially available photovoltaic (PV). Various technical factors that drive the overall reactions with the PV are considered, and maximum FEs of similar to 95 % are achieved for the production of both As(V) and formate. | Choi, Wonjung; Kim, Minju; Kim, Byeong-ju; Park, Yiseul; Han, Dong Suk; Hoffmann, Michael R.; Park, Hyunwoong | Kyungpook Natl Univ, Sch Energy Engn, Daegu 41566, South Korea; Pukyong Natl Univ, Dept Chem Engn, Busan 48547, South Korea; Qatar Univ, CAM, Doha 2713, Qatar; CALTECH, Linde Robinson Lab, Pasadena, CA 91125 USA | ; Park, Hyunwoong/A-1247-2012; Han, Dong Suk/Q-8641-2017; Han, Dong SuK/AAX-9333-2021 | 56419210400; 57191446527; 57204095284; 16025741900; 36139213900; 57203498505; 7601565583 | hwp@knu.ac.kr; | APPLIED CATALYSIS B-ENVIRONMENTAL | APPL CATAL B-ENVIRON | 0926-3373 | 1873-3883 | 265 | SCIE | CHEMISTRY, PHYSICAL;ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL | 2020 | 19.503 | 0.9 | 1.16 | 2025-06-25 | 34 | 30 | Redox reactions; Electrocatalysis; Water treatment; Solar fuels; Water-energy nexus | ELECTROCHEMICAL REDUCTION; MOLECULAR-HYDROGEN; CARBON-DIOXIDE; WATER; DEGRADATION; COPPER; OXIDE; TIO2; PHOTOSYNTHESIS; ELECTRODES | Electrocatalysis; Redox reactions; Solar fuels; Water treatment; Water-energy nexus | Carbon dioxide; Catalysis; Chlorine compounds; Costs; Electrocatalysis; Electrocatalysts; Electrochemical electrodes; Iridium compounds; Oxidation; Oxide minerals; Redox reactions; Tantalum compounds; Titanium dioxide; Water treatment; Aqueous bicarbonates; Bicarbonate solution; Cathodic reactions; Electrochemical systems; Faradaic efficiencies; Linear sweep voltammograms; Solar fuels; Water energy; Bismuth compounds | English | 2020 | 2020-05-15 | 10.1016/j.apcatb.2020.118607 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Surface engineering in improving activity of Pt nanocubes for ammonia electrooxidation reaction | Ammonia (NH3) electro-oxidation reaction (AOR) is an important reaction in direct NH3 fuel cells, NH3 electrolyzer, and NH3-based electrochemical sensors. However, its slow kinetics and structure-sensitive properties require specific electrocatalyst designs. In this study, Ir-decorated N nanocubes are developed as unique surface engineered model catalysts. For the first time, we find that a trace amount of Ir (less than 2%) could increase the AOR activity of N nanocubes by more than twice. Theoretical simulation results also illustrate that the surfacedecorated Ir could lower the energy barrier in the rate determining *NH formation step on N surfaces, thus increasing activity in accordance with experimental findings. Additionally, Ir and Ni(OH)(2)-decorated N nanocubes can significantly improve the durability. Our findings demonstrate the importance of surface engineering in catalyst synthesis and pave the way of advanced electrocatalyst designs for ammonia oxidation and other catalytic reactions. | Siddharth, Kumar; Hong, Youngmin; Qin, Xueping; Lee, Hye Jin; Chan, Yat Tung; Zhu, Shangqian; Chen, Guohua; Choi, Sang-Il; Shao, Minhua | Hong Kong Univ Sci & Technol, Dept Chem & Biol Engn, Kowloon, Clear Water Bay, Hong Kong, Peoples R China; Kyungpook Natl Univ, Dept Chem, Daegu 41566, South Korea; Kyungpook Natl Univ, Green Nano Mat Res Ctr, Daegu 41566, South Korea; Hong Kong Polytech Univ, Dept Mech Engn, Kowloon, Hong Kong, South Korea | shao, minhua/LSL-2089-2024; Zhu, Shangqian/U-6931-2017; Choi, Sang-Il/AGR-1133-2022; LEE, HYEJIN/W-1345-2018; Qin, Xueping/L-9131-2018; QIN, Xueping/L-9131-2018; CHEN, Guohua/R-1342-2017; Siddharth, Kumar/LZI-7650-2025; Choi, Sang-Il/N-7571-2013 | 57215940011; 57194557373; 57191582590; 56569175200; 57203193486; 57198937388; 57109501100; 56167600800; 8980047800 | sichoi@knu.ac.kr;kemshao@ust.hk; | APPLIED CATALYSIS B-ENVIRONMENTAL | APPL CATAL B-ENVIRON | 0926-3373 | 1873-3883 | 269 | SCIE | CHEMISTRY, PHYSICAL;ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL | 2020 | 19.503 | 0.9 | 2.43 | 2025-06-25 | 84 | 86 | Ammonia electro-oxidation reaction; Platinum; Iridium; Electrocatalyst; Density functional theory calculations | PREFERENTIAL 100 ORIENTATION; ELECTROCHEMICAL OXIDATION; PT-IR; FUEL-CELL; ANODIC-OXIDATION; PT(100) SITES; BINARY-ALLOYS; THIN-FILMS; PLATINUM; ELECTROCATALYSTS | Ammonia electro-oxidation reaction; Density functional theory calculations; Electrocatalyst; Iridium; Platinum | Catalysis; Catalytic oxidation; Density functional theory; Electrocatalysts; Electrooxidation; Fuel cells; Iridium; Oxidation; Platinum; Ammonia oxidation; Catalyst synthesis; Catalytic reactions; Electro-oxidation reaction; Model catalysts; Structure-sensitive properties; Surface engineering; Theoretical simulation; Ammonia | English | 2020 | 2020-07-15 | 10.1016/j.apcatb.2020.118821 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Sustainable lead management in halide perovskite solar cells | The most-efficient solar cells use Pb-based halide perovskites; however, their toxicity poses environmental and health risks. Here, the authors report an adsorbent that allows for sustainable Pb management in these devices. Despite the rapid development of perovskite solar cells (PSCs) toward commercialization, the toxic lead (Pb) ions in PSCs pose a potential threat to the environment, health and safety. Managing Pb via recycling represents a promising approach to mitigating its toxicity. However, managing Pb from commonly used organic solvents has been challenging due to the lack of suitable Pb adsorbents. Here, we report a new adsorbent for both separation and recovery of Pb from PSC pollutants. The synthesized iron-incorporated hydroxyapatite possesses a strongly negatively charged surface that improves electrostatic interaction through surface-charge delocalization, thus leading to enhanced Pb adsorption. We demonstrate the feasibility of a complete Pb management process, including the purification of Pb-containing non-aqueous solvents below 15 parts per 10(9), a level compliant with the standards of the US Environmental Protection Agency, as well as recycling of 99.97% of Pb ions by forming lead iodide. | Park, So Yeon; Park, Ji-Sang; Kim, Byeong Jo; Lee, Hyemin; Walsh, Aron; Zhu, Kai; Kim, Dong Hoe; Jung, Hyun Suk | Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon, South Korea; Korea Inst Machinery & Mat, Nanomech Syst Res Div, Daejeon, South Korea; Kyungpook Natl Univ, Dept Phys, Daegu, South Korea; Uppsala Univ, Phys Chem, Dept Chem, Angstrom Lab, Uppsala, Sweden; Sejong Univ, Dept Nanotechnol & Adv Mat Engn, Seoul, South Korea; Imperial Coll London, Thomas Young Ctr, London, England; Imperial Coll London, Dept Mat, London, England; Yonsei Univ, Dept Mat Sci & Engn, Seoul, South Korea; Natl Renewable Energy Lab, Chem & Nanosci Ctr, Golden, CO USA | Park, Ji-Sang/F-9944-2010; Walsh, Aron/A-7843-2008; Jung, Hyun Suk/H-3659-2015; Kim, Dong Hoe/HLQ-5764-2023; Zhu, Kai/AAF-1940-2019 | 57189464370; 36671796300; 56035375300; 57218340449; 35315151400; 57200759254; 56366898500; 9432551800 | donghoe.k@sejong.ac.kr;hsjung1@skku.edu; | NATURE SUSTAINABILITY | NAT SUSTAIN | 2398-9629 | 3 | 12 | SCIE;SSCI | ENVIRONMENTAL SCIENCES;ENVIRONMENTAL STUDIES;GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY | 2020 | 19.346 | 0.9 | 6.43 | 2025-06-25 | 137 | 134 | HIGHLY EFFICIENT; REMOVAL; PRECIPITATION; ADSORPTION; IONS | Environmental Protection Agency; Health risks; Hydroxyapatite; Iodine compounds; Layered semiconductors; Perovskite; Perovskite solar cells; Recycling; Charge delocalization; Health and safety; Lead management; Management process; Negatively charged surfaces; Non-aqueous solvents; Potential threats; US Environmental Protection Agency; Lead compounds | English | 2020 | 2020-12 | 10.1038/s41893-020-0586-6 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Three-dimensional entangled and twisted structures of nitrogen doped poly-(1,4-diethynylbenzene) chain combined with cobalt single atom as a highly efficient bifunctional electrocatalyst | The oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) have been explored extensively for various energy conversion and storage system. Development of metal single atom doped well designed carbon substrates are considered as a new effective strategy to enhance catalytic activity and stability, and focused on as promising air cathode materials for metal-air battery. In this work, we report a novel method to fabricate cobalt (Co) single-atom species supported on porous carbon substrate using poly-(1,4-diethynylbenzene) (PDEB) chain as a new carbon substrate. Nitrogen doped PDEB chain combined with cobalt single-atom (Co-N-PDEB) shows excellent ORR and OER bifunctional catalytic performance with 1.08 V of oxygen electrode activity due to the synergistic effect between unique meso and macroporous carbon matrix with doped Co-N-4 moiety. Finally, Co-N-PDEB air cathode adopted hybrid sodium (Na) air battery exhibits outstanding charge-discharge characteristics with low overpotential gap (0.296 V) and high round trip efficiency (91.02 %). | Kim, Kwanwoo; Kang, Taeoh; Kim, Myeongjin; Kim, Jooheon | Chung Ang Univ, Sch Chem Engn & Mat Sci, 211 Heukseok Dong, Seoul 156756, South Korea; Kyungpook Natl Univ, Dept Hydrogen & Renewable Energy, 80 Daehakro, Daegu 41566, South Korea | 57205454165; 57216830770; 55541419000; 13103271400 | myeongjinkim@knu.ac.kr;jooheonkim@cau.ac.kr; | APPLIED CATALYSIS B-ENVIRONMENTAL | APPL CATAL B-ENVIRON | 0926-3373 | 1873-3883 | 275 | SCIE | CHEMISTRY, PHYSICAL;ENGINEERING, CHEMICAL;ENGINEERING, ENVIRONMENTAL | 2020 | 19.503 | 0.9 | 2.16 | 2025-06-25 | 52 | 52 | 3D bifunctional catalyst; Poly-diethynylbenzene; Carbon chain; Co single-atom | OXYGEN REDUCTION; OXIDE NANOPARTICLES; CATALYST; EVOLUTION; GRAPHENE; PYROCHLORE; GRAPHDIYNE; SITES; ORR | 3D bifunctional catalyst; Carbon chain; Co single-atom; Poly-diethynylbenzene | Atoms; Carbon; Catalyst activity; Cathodes; Cobalt; Electrocatalysts; Electrolytic reduction; Energy conversion; Metal-air batteries; Nitrogen; Oxygen; Oxygen evolution reaction; Oxygen reduction reaction; Porous materials; Substrates; Bifunctional electrocatalysts; Carbon substrates; Catalytic performance; Charge-discharge characteristics; Energy conversion and storages; Macroporous carbon; Oxygen evolution reaction (oer); Synergistic effect; Doping (additives) | English | 2020 | 2020-10-15 | 10.1016/j.apcatb.2020.119107 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Enhancement of the surface properties of selective laser melted maraging steel by large pulsed electron-beam irradiation | The present work aimed to decrease the surface roughness of maraging steel (MS) by selective laser melting (SLM) using large pulsed electron-beam (LPEB) irradiation as a post-treatment. The MS samples were fabricated using different combinations of laser power, scanning speed, hatch distance, and build angle. The morphological features, surface roughness, phase content, and corrosion resistance of the MS samples in their as-fabricated (ASF) state were compared after LPEB irradiation. The ASF SLM-MS samples exhibit the presence of partially melted particles that spread over the entire surface and many cracks in both the longitudinal and transverse directions. A higher arithmetical mean height (S-a: 2 -17 mu m), large variations in S-a measured at various locations, and a strong dependence of S-a on build angle were also observed. Post-treatment by LPEB irradiation removed the partially melted particles, while reflow of the molten mass filled the cracks and voids and facilitated the formation of a uniform surface with a bright metallic finish. This has resulted in a significant decrease in S-a (0.50-4.50 mu m) and a smaller variation in S-a measured at different locations. Body-centered cubic a-martensite was the predominant phase for the ASF SLM-MS samples, along with a small fraction face-centered cubic gamma-austenite phase. After LPEB irradiation, the martensite was reverted to the austenite phase. The corrosion resistance of the LPEB-irradiated samples was moderately better than that of the ASF SLM-MS samples. The uniform surface morphology, removal of partially melted particles, absence of pores and cracks, decrease in S-a, and moderate improvement in corrosion resistance suggests that LPEB irradiation can be used as a post-treatment for SLM-MS samples. | Narayanan, T. S. N. Sankara; Kim, Jisoo; Jeong, Hoon Eui; Park, Hyung Wook | Kyungpook Natl Univ, Dept Precis Mech Engn, 386 Gajang Dong, Sangju 742711, Gyeongsangbuk D, South Korea; Ulsan Natl Inst Sci & Technol, Dept Mech Engn, UNIST Gil 50, Ulsan 689798, South Korea | KIM, JI/U-1902-2018 | 6701655884; 57192647685; 35490647000; 55537550000 | hwpark@unist.ac.kr; | ADDITIVE MANUFACTURING | ADDIT MANUF | 2214-8604 | 2214-7810 | 33 | SCIE | ENGINEERING, MANUFACTURING;MATERIALS SCIENCE, MULTIDISCIPLINARY | 2020 | 10.998 | 1.0 | 1.2 | 2025-06-25 | 21 | 25 | Selective laser melting; Maraging steel; Surface roughness; Large pulse electron beam irradiation; Corrosion resistance | MECHANICAL-PROPERTIES; CORROSION-RESISTANCE; MELTING SLM; BEHAVIOR; ROUGHNESS; OPTIMIZATION; PRECIPITATION; PERFORMANCE; PARAMETERS; EVOLUTION | Corrosion resistance; Large pulse electron beam irradiation; Maraging steel; Selective laser melting; Surface roughness | Austenite; Corrosion resistance; Electron beams; Electron sources; Irradiation; Maraging steel; Martensite; Melting; Morphology; Pulsed lasers; Radiation; Selective laser melting; Surface morphology; Surface roughness; Body-centered cubic; Face-centered cubic; Irradiated samples; Morphological features; Pulse electron beams; Pulsed electron beam irradiation; Pulsed electron beams; Selective laser melting (SLM); Steel corrosion | English | 2020 | 2020-05 | 10.1016/j.addma.2020.101125 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Model Compression for IoT Applications in Industry 4.0 via Multiscale Knowledge Transfer | Recently, Industry 4.0 has attracted much attention. It has close relations with the Internet of Things (IoT). On the other hand, convolutional neural networks (CNNs) have shown promising performance in many foundational services of the IoT applications. For the IoT applications with high-speed data streams and the requirement of time-sensitive actions, fast processing is demanded on small-scale platforms or even on IoT devices themselves. Therefore, it is inappropriate to employ cumbersome CNNs in IoT applications, making the study of model compression necessary. In knowledge transfer, it is common to employ a deep, well-trained network, called teacher, to guide a shallow, untrained network, called student, to have better performance. Previous works have made many attempts to transfer single-scale knowledge from teacher to student, leading to degradation of generalization ability. In this article, we introduce multiscale representations to knowledge transfer, which facilitates the generalization ability of student. We divide student and teacher into several stages. Student learns from multiscale knowledge provided by teacher at the end of each stage. Extensive experiments demonstrate the effectiveness of our proposed method both on image classification and on single image super-resolution. The huge performance gap between student and teacher is significantly narrowed down by our proposed method, making student suitable for IoT applications. | Fu, Shipeng; Li, Zhen; Liu, Kai; Din, Sadia; Imran, Muhammad; Yang, Xiaomin | Sichuan Univ, Coll Elect & Informat Engn, Chengdu 610065, Peoples R China; Kyungpook Natl Univ, Sch Comp Sci & Engn, Daegu 41566, South Korea; King Saud Univ, Coll Comp & Informat Sci, Riyadh 4545, Saudi Arabia | Din, Sadia/ADU-4679-2022; imran, Muhammad/Q-2375-2017; Imran, Muhammad/Q-2375-2017; Li, Zhen/KDN-2236-2024 | 57211575490; 57202992643; 57223776901; 57188997144; 57200275504; 9237988500 | fushipeng97@gmail.com;zhenli1031@gmail.com;kailiu@scu.edu.cn;saadia.deen@gmail.com;cimran@ksu.edu.sa;arielyang@scu.edu.cn; | IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS | IEEE T IND INFORM | 1551-3203 | 1941-0050 | 16 | 9 | SCIE | AUTOMATION & CONTROL SYSTEMS;COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS;ENGINEERING, INDUSTRIAL | 2020 | 10.215 | 1.0 | 1.87 | 2025-06-25 | 29 | 34 | Knowledge transfer; Internet of Things; Task analysis; Feature extraction; Computer vision; Knowledge engineering; Industry 4; 0; Internet of Things (IoT); image classification; knowledge transfer; multiscale representations; single image super-resolution | image classification; Industry 4.0; Internet of Things (IoT); knowledge transfer; multiscale representations; single image super-resolution | Convolutional neural networks; Data streams; Image classification; Industry 4.0; Knowledge management; Students; Fast Processing; Generalization ability; Internet of thing (IOT); IOT applications; Knowledge transfer; Model compression; Multiscale representations; Performance gaps; Internet of things | English | 2020 | 2020-09 | 10.1109/tii.2019.2953106 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Axillary Nodal Burden Assessed with Pretreatment Breast MRI Is Associated with Failed Sentinel Lymph Node Identification after Neoadjuvant Chemotherapy for Breast Cancer | Background: After publication of the findings of the American College of Surgeons Oncology Group Z1071 trial, sentinel lymph node biopsy (SLNB) has been increasingly performed in patients with breast cancer after neoadjuvant chemotherapy (NAC). Purpose: To investigate the pretreatment breast MRI and clinical-pathologic characteristics associated with failed sentinel node identification after NAC in patients with breast cancer. Materials and Methods: Patients who underwent SLNB after NAC between January 2015 and January 2019 were retrospectively identified. Two radiologists independently reviewed the characteristics of axillary nodes (number, perinodal infiltration, cortical thickness, and maximal diameter) at pretreatment breast MRI. The associations of the clinical-pathologic and imaging characteristics of the axillary nodes with sentinel node identification were assessed by using the chi(2) test and/or the chi(2) test for trend and multivariable logistic regression with odds ratio (OR) calculation. Results: A total of 276 women (mean age 6 standard deviation, 48 years 6 9; range, 27-68 years) were included. Sentinel nodes were identified in 252 of the 276 patients (91%). Multivariable analysis showed that higher (stage 3 or 4) clinical T stages (OR = 5.2, P = .004 for radiologist 1; OR = 4.6, P = .01 for radiologist 2), use of a single tracer (OR = 4.3, P = .04 for radiologist 1; OR = 3.9, P = .046 for radiologist 2), a greater number (10 or more) of suspicious axillary nodes (OR = 11.5, P = .002 for radiologist 1; OR = 8.3, P = .01 for radiologist 2), and the presence of perinodal infiltration (OR = 7.0, P = .002 for radiologist 1; OR = 7.5, P = .003 for radiologist 2) were associated with failed sentinel node identification. Conclusion: A greater number of suspicious axillary nodes and the presence of perinodal infiltration at pretreatment MRI, higher clinical T stages, and use of a single tracer were independently associated with failed sentinel node identification after neoadjuvant chemotherapy in patients with breast cancer. (C) RSNA, 2020 | Kim, Won Hwa; Kim, Hye Jung; Park, Chan Sub; Lee, Jeeyeon; Park, Ho Yong; Jung, Jin Hyang; Kim, Wan Wook; Chae, Yee Soo; Lee, Soo Jung; Kim, See Hyung | Kyungpook Natl Univ, Chilgok Hosp, Sch Med, Dept Radiol, 807 Hoguk Ro, Daegu 41404, South Korea; Kyungpook Natl Univ, Chilgok Hosp, Sch Med, Dept Surg, 807 Hoguk Ro, Daegu 41404, South Korea; Kyungpook Natl Univ, Chilgok Hosp, Sch Med, Dept Oncol Hematol, 807 Hoguk Ro, Daegu 41404, South Korea; Kyungpook Natl Univ, Kyungpook Natl Univ Hosp, Sch Med, Dept Radiol, Daegu, South Korea | Kim, Sang-Hyun/J-5402-2012; PARK, JUN-YOUNG/P-5981-2015 | 57216541974; 57203506201; 57216541857; 37079213100; 57216541798; 57216550208; 57216542431; 57216541619; 57216546579; 57216541250 | mamrad@knu.ac.kr; | RADIOLOGY | RADIOLOGY | 0033-8419 | 295 | 2 | SCIE | RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING | 2020 | 11.105 | 1.1 | 1.04 | 2025-06-25 | 14 | 14 | SURGICAL ADJUVANT BREAST; PREOPERATIVE CHEMOTHERAPY; PERITUMORAL EDEMA; BIOPSY; ULTRASOUND; SURGERY | Adult; Aged; Axilla; Breast Neoplasms; Chemotherapy, Adjuvant; Female; Humans; Lymphatic Metastasis; Magnetic Resonance Imaging; Middle Aged; Neoadjuvant Therapy; Neoplasm Staging; Retrospective Studies; Sentinel Lymph Node Biopsy; cyclophosphamide; docetaxel; doxorubicin; phytate tc 99m; trastuzumab; adjuvant therapy; adult; aged; Article; axillary lymph node; breast cancer; cancer adjuvant therapy; cancer combination chemotherapy; cancer patient; cancer size; cancer staging; clinical feature; controlled study; diagnostic error; female; histopathology; human; human tissue; image display; major clinical study; mathematical computing; multivariate analysis; multivariate logistic regression analysis; nuclear magnetic resonance imaging; odds ratio; priority journal; radiologist; retrospective study; sentinel lymph node biopsy; sentinel lymph node metastasis; adjuvant chemotherapy; axilla; breast tumor; diagnostic imaging; lymph node metastasis; middle aged; neoadjuvant therapy; nuclear magnetic resonance imaging; pathology; procedures | English | 2020 | 2020-05 | 10.1148/radiol.2020191639 | 바로가기 | 바로가기 | 바로가기 | 바로가기 |
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