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Kim S, Lee K, Gwak N, Shin S, Seo J, Noh SH, Kim D, Lee Y, Kong H, Yeo D, Kim TA, Lee SY, Jang J, Oh N. Colloidal Synthesis of P-Type Zn 3 As 2 Nanocrystals. Adv Mater 2024:e2310671. [PMID: 38279779 DOI: 10.1002/adma.202310671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 01/11/2024] [Indexed: 01/28/2024]
Abstract
Zinc pnictides, particularly Zn3 As2 , hold significant promise for optoelectronic applications owing to their intrinsic p-type behavior and appropriate bandgaps. However, despite the outstanding properties of colloidal Zn3 As2 nanocrystals, research in this area is lacking because of the absence of suitable precursors, occurrence of surface oxidation, and intricacy of the crystal structures. In this study, a novel and facile solution-based synthetic approach is presented for obtaining highly crystalline p-type Zn3 As2 nanocrystals with accurate stoichiometry. By carefully controlling the feed ratio and reaction temperature, colloidal Zn3 As2 nanocrystals are successfully obtained. Moreover, the mechanism underlying the conversion of As precursors in the initial phases of Zn3 As2 synthesis is elucidated. Furthermore, these nanocrystals are employed as active layers in field-effect transistors that exhibit inherent p-type characteristics with native surface ligands. To enhance the charge transport properties, a dual passivation strategy is introduced via phase-transfer ligand exchange, leading to enhanced hole mobilities as high as 0.089 cm2 V-1 s-1 . This study not only contributes to the advancement of nanocrystal synthesis, but also opens up new possibilities for previously underexplored p-type nanocrystal research.
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Affiliation(s)
- Seongchan Kim
- Division of Materials Science and Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Kyumin Lee
- Department of Energy Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Namyoung Gwak
- Division of Materials Science and Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Seungki Shin
- Division of Materials Science and Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Jaeyoung Seo
- Division of Materials Science and Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Sung Hoon Noh
- Department of Energy Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Doyeon Kim
- Department of Energy Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Yunseo Lee
- Division of Materials Science and Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Hyein Kong
- Division of Materials Science and Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Dongjoon Yeo
- Division of Materials Science and Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Tae Ann Kim
- Convergence Research Center for Solutions to Electromagnetic Interference in Future-Mobility, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Seung-Yong Lee
- Division of Materials Science and Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Jaeyoung Jang
- Department of Energy Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Nuri Oh
- Division of Materials Science and Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
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Xuyao S, Kim SB, Jung H, Kim J, Mo J, Jeong YJ, Jang J, An TK, Kim YH, Jeon J. Well-Balanced Ambipolar Charge Transport of Diketopyrrolepyrrole-Based Copolymers: Organic Field-Effect Transistors and High-Voltage Logic Applications. Macromol Rapid Commun 2024; 45:e2300271. [PMID: 37400426 DOI: 10.1002/marc.202300271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/14/2023] [Accepted: 06/20/2023] [Indexed: 07/05/2023]
Abstract
A poly (3,6-bis(thiophen-2-yl)-2,5-bis(2-decyltetradecyl)-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione-co-(2,3-bis(phenyl)acrylonitrile)) (PDPADPP) copolymer, composed of diketopyrrolopyrrole (DPP) and a cyano (nitrile) group with a vinylene spacer linking two benzene rings, is synthesized via a palladium-catalyzed Suzuki coupling reaction. The electrical performance of PDPADPP in organic field-effect transistors (OFETs) and circuits is investigated. The OFETs based on PDPADPP exhibit typical ambipolar transport characteristics, with the as-cast OFETs demonstrating low field-effect hole and electron mobility values of 0.016 and 0.004 cm2 V-1 s-1 , respectively. However, after thermal annealing at 240 °C, the OFETs exhibit improved transport characteristics with highly balanced ambipolar transport, showing average hole and electron mobility values of 0.065 and 0.116 cm2 V-1 s-1 , respectively. To verify the application of the PDPADPP OFETs in high-voltage logic circuits, compact modeling using the industry-standard small-signal Berkeley short-channel IGFET model (BSIM) is performed, and the logic application characteristics are evaluated. The circuit simulation results demonstrate excellent logic application performance of the PDPADPP-based ambipolar transistor and illustrate that the device annealed at 240 °C exhibits ideal circuit characteristics.
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Affiliation(s)
- Song Xuyao
- Department of Chemistry and RIGET, Gyeongsang National University, Jinju, 52828, South Korea
| | - Sang Beom Kim
- Department of Energy Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Hanggyo Jung
- School of Electronic and Electrical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Jaekyum Kim
- Department of IT∙Energy Convergence (BK21 FOUR), Korea National University of Transportation, 50 Daehak-Ro, Chungju, 27469, Republic of Korea
| | - Jaewan Mo
- Department of IT∙Energy Convergence (BK21 FOUR), Korea National University of Transportation, 50 Daehak-Ro, Chungju, 27469, Republic of Korea
| | - Yong Jin Jeong
- Department of IT∙Energy Convergence (BK21 FOUR), Korea National University of Transportation, 50 Daehak-Ro, Chungju, 27469, Republic of Korea
- Department of Materials Science and Engineering, Korea National University of Transportation, 50 Daehak-Ro, Chungju, 27469, Republic of Korea
| | - Jaeyoung Jang
- Department of Energy Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Tae Kyu An
- Department of IT∙Energy Convergence (BK21 FOUR), Korea National University of Transportation, 50 Daehak-Ro, Chungju, 27469, Republic of Korea
- Department of Polymer Science & Engineering, Korea National University of Transportation, 50 Daehak-Ro, Chungju, 27469, Republic of Korea
| | - Yun-Hi Kim
- Department of Chemistry and RIGET, Gyeongsang National University, Jinju, 52828, South Korea
| | - Jongwook Jeon
- School of Electronic and Electrical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea
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Jang J, Lee KH. Dynamics of Macroeconomy, Medicaid, and State Fiscal Conditions: A Role of Medicaid Expansion. Risk Manag Healthc Policy 2023; 16:2323-2337. [PMID: 38024483 PMCID: PMC10640829 DOI: 10.2147/rmhp.s425539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 10/20/2023] [Indexed: 12/01/2023] Open
Abstract
Background One of the main concerns of state governments about Medicaid expansion is the potential increase in state fiscal burden following the rise in enrollments. In previous literature, limited attention has been paid to the effect of macroeconomic changes, which are closely linked to Medicaid enrollments, in understanding the impact of Medicaid expansion on a state. To narrow the gap, this study establishes a synthetic model to represent the transmission channel from an unemployment shock to the Medicaid program and state expenditures. Methods The panel vector autoregression (VAR) model is adopted for the empirical analysis using annual data from 2010 to 2019 for 50 US states and D.C. The unit root and Granger causality tests are conducted to check the model's appropriateness. The estimated results are analyzed by using impulse response functions. Results A sudden increase in the unemployment rate will raise the number of Medicaid enrollees and the state Medicaid expenditure, but the impact on the overall state budget is not clear. States that adopt Medicaid expansion will encounter surges in enrollment and increasing Medicaid expenditure during the economic recession, while the non-expansion states will only have moderate enrollment increases. However, an increased budgetary burden per new enrollees will not be significant at its level. Conclusion Medicaid expansion will allow more people to benefit from the public health insurance program during an economic recession while the impact on states' fiscal burden will be moderate.
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Affiliation(s)
- Jaeyoung Jang
- Askew School of Public Administration and Policy, Florida State University, Tallahassee, FL, USA
| | - Keon-Hyung Lee
- Askew School of Public Administration and Policy, Florida State University, Tallahassee, FL, USA
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Kim W, Yang J, Jang J, Oh JS, Han S, Kim S, Jang H, Kim YJ, Kim SW. Open-Air Testing of Dual-Comb Time-of-Flight Measurement. Sensors (Basel) 2023; 23:8949. [PMID: 37960648 PMCID: PMC10649856 DOI: 10.3390/s23218949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 10/06/2023] [Accepted: 10/31/2023] [Indexed: 11/15/2023]
Abstract
We configured a long-distance ranging apparatus to test the principle of dual-comb time-of-flight measurement using ultrashort lasers. Emphasis was given to the evaluation of open-air performance quantitatively in terms of the measurement resolution and stability. The test results revealed that our dual-comb asynchronous optical pulse sampling permits micrometer-resolved ranging with a repeatability of 2.05 μm over a 648 m distance in dry weather conditions. Further atmospheric effects were evaluated in three different weather conditions with corresponding Allan deviations. Finally, the capability of simultaneous determination of multiple targets was verified with the potential of advanced industrial applications, such as manufacturing, surveying, metrology, and geodesy.
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Affiliation(s)
- Wooram Kim
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Yuseong-gu, Daejeon 34141, Republic of Korea; (W.K.); (J.Y.); (J.J.); (H.J.); (Y.-J.K.)
| | - Jaewon Yang
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Yuseong-gu, Daejeon 34141, Republic of Korea; (W.K.); (J.Y.); (J.J.); (H.J.); (Y.-J.K.)
| | - Jaeyoung Jang
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Yuseong-gu, Daejeon 34141, Republic of Korea; (W.K.); (J.Y.); (J.J.); (H.J.); (Y.-J.K.)
| | - Jeong Seok Oh
- Advanced Manufacturing Systems Research Division, Korea Institute of Machinery and Materials (KIMM), Yuseong-gu, Daejeon 34103, Republic of Korea; (J.S.O.); (S.H.); (S.K.)
| | - Seongheum Han
- Advanced Manufacturing Systems Research Division, Korea Institute of Machinery and Materials (KIMM), Yuseong-gu, Daejeon 34103, Republic of Korea; (J.S.O.); (S.H.); (S.K.)
| | - Seungman Kim
- Advanced Manufacturing Systems Research Division, Korea Institute of Machinery and Materials (KIMM), Yuseong-gu, Daejeon 34103, Republic of Korea; (J.S.O.); (S.H.); (S.K.)
| | - Heesuk Jang
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Yuseong-gu, Daejeon 34141, Republic of Korea; (W.K.); (J.Y.); (J.J.); (H.J.); (Y.-J.K.)
| | - Young-Jin Kim
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Yuseong-gu, Daejeon 34141, Republic of Korea; (W.K.); (J.Y.); (J.J.); (H.J.); (Y.-J.K.)
| | - Seung-Woo Kim
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Yuseong-gu, Daejeon 34141, Republic of Korea; (W.K.); (J.Y.); (J.J.); (H.J.); (Y.-J.K.)
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5
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Smarra C, Goncharov B, Barausse E, Antoniadis J, Babak S, Nielsen ASB, Bassa CG, Berthereau A, Bonetti M, Bortolas E, Brook PR, Burgay M, Caballero RN, Chalumeau A, Champion DJ, Chanlaridis S, Chen S, Cognard I, Desvignes G, Falxa M, Ferdman RD, Franchini A, Gair JR, Graikou E, Grießmeier JM, Guillemot L, Guo YJ, Hu H, Iraci F, Izquierdo-Villalba D, Jang J, Jawor J, Janssen GH, Jessner A, Karuppusamy R, Keane EF, Keith MJ, Kramer M, Krishnakumar MA, Lackeos K, Lee KJ, Liu K, Liu Y, Lyne AG, McKee JW, Main RA, Mickaliger MB, Niţu IC, Parthasarathy A, Perera BBP, Perrodin D, Petiteau A, Porayko NK, Possenti A, Leclere HQ, Samajdar A, Sanidas SA, Sesana A, Shaifullah G, Speri L, Spiewak R, Stappers BW, Susarla SC, Theureau G, Tiburzi C, van der Wateren E, Vecchio A, Krishnan VV, Wang J, Wang L, Wu Z. Second Data Release from the European Pulsar Timing Array: Challenging the Ultralight Dark Matter Paradigm. Phys Rev Lett 2023; 131:171001. [PMID: 37955508 DOI: 10.1103/physrevlett.131.171001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 09/15/2023] [Accepted: 09/25/2023] [Indexed: 11/14/2023]
Abstract
Pulsar Timing Array experiments probe the presence of possible scalar or pseudoscalar ultralight dark matter particles through decade-long timing of an ensemble of galactic millisecond radio pulsars. With the second data release of the European Pulsar Timing Array, we focus on the most robust scenario, in which dark matter interacts only gravitationally with ordinary baryonic matter. Our results show that ultralight particles with masses 10^{-24.0} eV≲m≲10^{-23.3} eV cannot constitute 100% of the measured local dark matter density, but can have at most local density ρ≲0.3 GeV/cm^{3}.
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Affiliation(s)
- Clemente Smarra
- SISSA-International School for Advanced Studies, Via Bonomea 265, 34136, Trieste, Italy and INFN, Sezione di Trieste
- IFPU-Institute for Fundamental Physics of the Universe, Via Beirut 2, 34014 Trieste, Italy
| | - Boris Goncharov
- Gran Sasso Science Institute (GSSI), I-67100 L'Aquila, Italy
- INFN, Laboratori Nazionali del Gran Sasso, I-67100 Assergi, Italy
| | - Enrico Barausse
- SISSA-International School for Advanced Studies, Via Bonomea 265, 34136, Trieste, Italy and INFN, Sezione di Trieste
- IFPU-Institute for Fundamental Physics of the Universe, Via Beirut 2, 34014 Trieste, Italy
| | - J Antoniadis
- Institute of Astrophysics, FORTH, Nikolaou Plastira 100, 70013, Heraklion, Greece
- Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
| | - S Babak
- Université Paris Cité CNRS, Astroparticule et Cosmologie, 75013 Paris, France
| | - A-S Bak Nielsen
- Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
- Fakultät für Physik, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany
| | - C G Bassa
- ASTRON, Netherlands Institute for Radio Astronomy, Oude Hoogeveensedijk 4, 7991 PD, Dwingeloo, The Netherlands
| | - A Berthereau
- Laboratoire de Physique et Chimie de l'Environnement et de l'Espace, Université d'Orléans/CNRS, 45071 Orléans Cedex 02, France
- Observatoire Radioastronomique de Nançay, Observatoire de Paris, Université PSL, Université d'Orléans, CNRS, 18330 Nançay, France
| | - M Bonetti
- Dipartimento di Fisica "G. Occhialini", Universitá degli Studi di Milano-Bicocca, Piazza della Scienza 3, I-20126 Milano, Italy
- INFN, Sezione di Milano-Bicocca, Piazza della Scienza 3, I-20126 Milano, Italy
- INAF - Osservatorio Astronomico di Brera, via Brera 20, I-20121 Milano, Italy
| | - E Bortolas
- Dipartimento di Fisica "G. Occhialini", Universitá degli Studi di Milano-Bicocca, Piazza della Scienza 3, I-20126 Milano, Italy
- INFN, Sezione di Milano-Bicocca, Piazza della Scienza 3, I-20126 Milano, Italy
- INAF - Osservatorio Astronomico di Brera, via Brera 20, I-20121 Milano, Italy
| | - P R Brook
- Institute for Gravitational Wave Astronomy and School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - M Burgay
- INAF - Osservatorio Astronomico di Cagliari, via della Scienza 5, 09047 Selargius (CA), Italy
| | - R N Caballero
- Hellenic Open University, School of Science and Technology, 26335 Patras, Greece
| | - A Chalumeau
- Dipartimento di Fisica "G. Occhialini", Universitá degli Studi di Milano-Bicocca, Piazza della Scienza 3, I-20126 Milano, Italy
| | - D J Champion
- Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
| | - S Chanlaridis
- Institute of Astrophysics, FORTH, Nikolaou Plastira 100, 70013, Heraklion, Greece
| | - S Chen
- Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, People's Republic of China
| | - I Cognard
- Laboratoire de Physique et Chimie de l'Environnement et de l'Espace, Université d'Orléans/CNRS, 45071 Orléans Cedex 02, France
- Observatoire Radioastronomique de Nançay, Observatoire de Paris, Université PSL, Université d'Orléans, CNRS, 18330 Nançay, France
| | - G Desvignes
- Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
| | - M Falxa
- Université Paris Cité CNRS, Astroparticule et Cosmologie, 75013 Paris, France
- Laboratoire de Physique et Chimie de l'Environnement et de l'Espace, Université d'Orléans/CNRS, 45071 Orléans Cedex 02, France
| | - R D Ferdman
- School of Physics, Faculty of Science, University of East Anglia, Norwich NR4 7TJ, United Kingdom
| | - A Franchini
- Dipartimento di Fisica "G. Occhialini", Universitá degli Studi di Milano-Bicocca, Piazza della Scienza 3, I-20126 Milano, Italy
- INFN, Sezione di Milano-Bicocca, Piazza della Scienza 3, I-20126 Milano, Italy
| | - J R Gair
- Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Am Muühlenberg 1, 14476 Potsdam, Germany
| | - E Graikou
- Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
| | - J-M Grießmeier
- Laboratoire de Physique et Chimie de l'Environnement et de l'Espace, Université d'Orléans/CNRS, 45071 Orléans Cedex 02, France
- Observatoire Radioastronomique de Nançay, Observatoire de Paris, Université PSL, Université d'Orléans, CNRS, 18330 Nançay, France
| | - L Guillemot
- Laboratoire de Physique et Chimie de l'Environnement et de l'Espace, Université d'Orléans/CNRS, 45071 Orléans Cedex 02, France
- Observatoire Radioastronomique de Nançay, Observatoire de Paris, Université PSL, Université d'Orléans, CNRS, 18330 Nançay, France
| | - Y J Guo
- Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
| | - H Hu
- Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
| | - F Iraci
- INAF - Osservatorio Astronomico di Cagliari, via della Scienza 5, 09047 Selargius (CA), Italy
- Universitá di Cagliari, Dipartimento di Fisica, S.P. Monserrato-Sestu Km 0,700-09042 Monserrato (CA), Italy
| | - D Izquierdo-Villalba
- Dipartimento di Fisica "G. Occhialini", Universitá degli Studi di Milano-Bicocca, Piazza della Scienza 3, I-20126 Milano, Italy
- INFN, Sezione di Milano-Bicocca, Piazza della Scienza 3, I-20126 Milano, Italy
| | - J Jang
- Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
| | - J Jawor
- Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
| | - G H Janssen
- ASTRON, Netherlands Institute for Radio Astronomy, Oude Hoogeveensedijk 4, 7991 PD, Dwingeloo, The Netherlands
- Department of Astrophysics/IMAPP, Radboud University Nijmegen, P.O. Box 9010, 6500 GL Nijmegen, The Netherlands
| | - A Jessner
- Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
| | - R Karuppusamy
- Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
| | - E F Keane
- School of Physics, Trinity College Dublin, College Green, Dublin 2, D02 PN40, Ireland
| | - M J Keith
- Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom
| | - M Kramer
- Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
- Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom
| | - M A Krishnakumar
- Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
- Fakultät für Physik, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany
| | - K Lackeos
- Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
| | - K J Lee
- Institute of Astrophysics, FORTH, Nikolaou Plastira 100, 70013, Heraklion, Greece
- Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
- Observatoire Radioastronomique de Nançay, Observatoire de Paris, Université PSL, Université d'Orléans, CNRS, 18330 Nançay, France
| | - K Liu
- Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
| | - Y Liu
- Fakultät für Physik, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany
- National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China
| | - A G Lyne
- Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom
| | - J W McKee
- E.A. Milne Centre for Astrophysics, University of Hull, Cottingham Road, Kingston-upon-Hull, HU6 7RX, United Kingdom
- Centre of Excellence for Data Science, Artificial Intelligence and Modelling (DAIM), University of Hull, Cottingham Road, Kingston-upon-Hull, HU6 7RX, United Kingdom
| | - R A Main
- Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
| | - M B Mickaliger
- Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom
| | - I C Niţu
- Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom
| | - A Parthasarathy
- Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
| | - B B P Perera
- Arecibo Observatory, HC3 Box 53995, Arecibo, Puerto Rico 00612
| | - D Perrodin
- INAF - Osservatorio Astronomico di Cagliari, via della Scienza 5, 09047 Selargius (CA), Italy
| | - A Petiteau
- Université Paris Cité CNRS, Astroparticule et Cosmologie, 75013 Paris, France
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - N K Porayko
- Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
- Dipartimento di Fisica "G. Occhialini", Universitá degli Studi di Milano-Bicocca, Piazza della Scienza 3, I-20126 Milano, Italy
| | - A Possenti
- INAF - Osservatorio Astronomico di Cagliari, via della Scienza 5, 09047 Selargius (CA), Italy
| | | | - A Samajdar
- Institut für Physik und Astronomie, Universität Potsdam, Haus 28, Karl-Liebknecht-Str. 24/25, 14476, Potsdam, Germany
| | - S A Sanidas
- Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom
| | - A Sesana
- Dipartimento di Fisica "G. Occhialini", Universitá degli Studi di Milano-Bicocca, Piazza della Scienza 3, I-20126 Milano, Italy
- INFN, Sezione di Milano-Bicocca, Piazza della Scienza 3, I-20126 Milano, Italy
- INAF - Osservatorio Astronomico di Brera, via Brera 20, I-20121 Milano, Italy
| | - G Shaifullah
- Dipartimento di Fisica "G. Occhialini", Universitá degli Studi di Milano-Bicocca, Piazza della Scienza 3, I-20126 Milano, Italy
- INFN, Sezione di Milano-Bicocca, Piazza della Scienza 3, I-20126 Milano, Italy
- INAF - Osservatorio Astronomico di Cagliari, via della Scienza 5, 09047 Selargius (CA), Italy
| | - L Speri
- Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Am Muühlenberg 1, 14476 Potsdam, Germany
| | - R Spiewak
- Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom
| | - B W Stappers
- Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom
| | - S C Susarla
- Ollscoil na Gaillimhe-University of Galway, University Road, Galway H91 TK33, Ireland
| | - G Theureau
- Laboratoire de Physique et Chimie de l'Environnement et de l'Espace, Université d'Orléans/CNRS, 45071 Orléans Cedex 02, France
- Observatoire Radioastronomique de Nançay, Observatoire de Paris, Université PSL, Université d'Orléans, CNRS, 18330 Nançay, France
- Laboratoire Univers et Théories LUTh, Observatoire de Paris, Université PSL, CNRS, Université de Paris, 92190 Meudon, France
| | - C Tiburzi
- INAF - Osservatorio Astronomico di Cagliari, via della Scienza 5, 09047 Selargius (CA), Italy
| | - E van der Wateren
- ASTRON, Netherlands Institute for Radio Astronomy, Oude Hoogeveensedijk 4, 7991 PD, Dwingeloo, The Netherlands
- Department of Astrophysics/IMAPP, Radboud University Nijmegen, P.O. Box 9010, 6500 GL Nijmegen, The Netherlands
| | - A Vecchio
- Institute for Gravitational Wave Astronomy and School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | | | - J Wang
- Fakultät für Physik, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany
- Ruhr University Bochum, Faculty of Physics and Astronomy, Astronomical Institute (AIRUB), 44780 Bochum, Germany
- Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai 519087, China
| | - L Wang
- Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom
| | - Z Wu
- National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China
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Hyun Suh E, Beom Kim S, Jung J, Jang J. Extremely Electron-Withdrawing Lewis-Paired CN Groups for Organic p-Dopants. Angew Chem Int Ed Engl 2023; 62:e202304245. [PMID: 37271729 DOI: 10.1002/anie.202304245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 06/01/2023] [Accepted: 06/02/2023] [Indexed: 06/06/2023]
Abstract
P-type chemical doping (p-doping) is a key technique to modulate the optical, electrical, and electronic properties of organic semiconductors. However, typical functional groups in organic p-dopants have insufficient electron-withdrawing strength, and the inevitable diffusion of dopants in host matrices degrades doping stabilities. Herein, we utilize extremely electron-withdrawing Lewis-paired CN groups as a new class of building blocks for designing unprecedentedly strong organic p-dopants with excellent doping stability. Various Lewis acids are paired with CN-functionalized conjugated molecules in the solution state, which strengthens the electron-withdrawing properties of CN groups almost twofold. The large dopants afford outstanding doping stability against continuous heating and long-term atmospheric exposure, which is promising for practical applications in devices. Given the broad applicability of this simple combinatorial approach, it may impact many fields of (opto)electronics.
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Affiliation(s)
- Eui Hyun Suh
- Department of Energy Engineering, Hanyang University, 04763, Seoul, Republic of Korea
| | - Sang Beom Kim
- Department of Energy Engineering, Hanyang University, 04763, Seoul, Republic of Korea
| | - Jaemin Jung
- Department of Energy Engineering, Hanyang University, 04763, Seoul, Republic of Korea
| | - Jaeyoung Jang
- Department of Energy Engineering, Hanyang University, 04763, Seoul, Republic of Korea
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Lee K, Goh J, Jang J, Hwang J, Kwak J, Kim J, Eom K. Feasibility study of computed tomography texture analysis for evaluation of canine primary adrenal gland tumors. Front Vet Sci 2023; 10:1126165. [PMID: 37711438 PMCID: PMC10499047 DOI: 10.3389/fvets.2023.1126165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Accepted: 08/01/2023] [Indexed: 09/16/2023] Open
Abstract
Objective This study aimed to investigate the feasibility of computed tomography (CT) texture analysis for distinguishing canine adrenal gland tumors and its usefulness in clinical decision-making. Materials and methods The medical records of 25 dogs with primary adrenal masses who underwent contrast CT and a histopathological examination were retrospectively reviewed, of which 12 had adenomas (AAs), 7 had adenocarcinomas (ACCs), and 6 had pheochromocytomas (PHEOs). Conventional CT evaluation of each adrenal gland tumor included the mean, maximum, and minimum attenuation values in Hounsfield units (HU), heterogeneity of the tumor parenchyma, and contrast enhancement (type, pattern, and degree), respectively, in each phase. In CT texture analysis, precontrast and delayed-phase images of 18 adrenal gland tumors, which could be applied for ComBat harmonization were used, and 93 radiomic features (18 first-order and 75 second-order statistics) were extracted. Then, ComBat harmonization was applied to compensate for the batch effect created by the different CT protocols. The area under the receiver operating characteristic curve (AUC) for each significant feature was used to evaluate the diagnostic performance of CT texture analysis. Results Among the conventional features, PHEO showed significantly higher mean and maximum precontrast HU values than ACC (p < 0.05). Eight second-order features on the precontrast images showed significant differences between the adrenal gland tumors (p < 0.05). However, none of them were significantly different between AA and PHEO, or between precontrast images and delayed-phase images. This result indicates that ACC exhibited more heterogeneous and complex textures and more variable intensities with lower gray-level values than AA and PHEO. The correlation, maximal correlation coefficient, and gray level non-uniformity normalized were significantly different between AA and ACC, and between ACC and PHEO. These features showed high AUCs in discriminating ACC and PHEO, which were comparable or higher than the precontrast mean and maximum HU (AUC = 0.865 and 0.860, respectively). Conclusion Canine primary adrenal gland tumor differentiation can be achieved with CT texture analysis on precontrast images and may have a potential role in clinical decision-making. Further prospective studies with larger populations and cross-validation are warranted.
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Affiliation(s)
- Kyungsoo Lee
- Department of Veterinary Medical Imaging, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Jinhyong Goh
- Department of Veterinary Medical Imaging, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Jaeyoung Jang
- Jang Jae Young Veterinary Surgery Center, Seong-nam, Gyunggi-do, Republic of Korea
| | | | - Jungmin Kwak
- Saram and Animal Medical Center, Yongin-si, Gyunggi-do, Republic of Korea
| | - Jaehwan Kim
- Department of Veterinary Medical Imaging, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Kidong Eom
- Department of Veterinary Medical Imaging, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
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Kim TH, Park I, Lee KH, Sim JH, Park MH, Han TH, Paik U, Jang J, Park HB, Kim YH. Investigating the interfacial properties of halide perovskite/TiO x heterostructures for versatile photocatalytic reactions under sunlight. Nanoscale 2023; 15:7710-7714. [PMID: 37051888 DOI: 10.1039/d2nr06840k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Heterostructures of metal halide perovskites and TiOx are efficient photocatalytic materials owing to the combination of the advantages of each compound, specifically the high absorption coefficients and long charge-carrier lifetimes of perovskites, and efficient photocatalytic activity of TiOx. However, chemical reduction of CO2 using PNC/TiOx heterostructures without organic solvents has not been reported yet. Here, we report the first solvent-free reduction of CO2 using amorphous TiOx with embedded colloidal perovskite nanocrystals (PNCs). The combination was obtained by carrying out hydrolysis of titanium butoxide (TBOT) on the PNC surface without high-temperature calcination. We proposed a mechanism involving photoexcited electrons being transferred from PNCs to TBOT, enabling photocatalytic reactions using TiOx under visible-light excitation. We demonstrated efficient visible-light-driven photocatalytic reactions at PNC/TiOx interfaces, specifically with a CO production rate of 30.43 μmol g-1 h-1 and accelerated degradation of organic pollutants under natural sunlight. Our work has provided a simple path toward both efficient CO2 reduction and photocatalytic degradation of organic dyes.
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Affiliation(s)
- Tae Hyung Kim
- Department of Energy Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.
| | - Inho Park
- Department of Energy Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.
| | - Kyeong Ho Lee
- Department of Energy Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.
| | - Jin-Han Sim
- Division of Materials Science and Engineering, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Min-Ho Park
- Department of Materials Science and Engineering, Department of Green Chemistry and Materials Engineering, Soongsil University, 369 Sangdo-Ro, Dongjak-Gu, Seoul 06978, Republic of Korea
| | - Tae-Hee Han
- Division of Materials Science and Engineering, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Ungyu Paik
- Department of Energy Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.
| | - Jaeyoung Jang
- Department of Energy Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.
| | - Ho Bum Park
- Department of Energy Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.
| | - Young-Hoon Kim
- Department of Energy Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.
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Kumar R, Sadeghi K, Jang J, Seo J. Mechanical, chemical, and bio-recycling of biodegradable plastics: A review. Sci Total Environ 2023; 882:163446. [PMID: 37075991 DOI: 10.1016/j.scitotenv.2023.163446] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 04/07/2023] [Accepted: 04/07/2023] [Indexed: 05/03/2023]
Abstract
The extensive use of petroleum-based non-biodegradable plastics for various applications has led to global concerns regarding the severe environmental issues associated with them. However, biodegradable plastics are emerging as green alternatives to petroleum-based non-biodegradable plastics. Biodegradable plastics, which include bio-based and petroleum-based biodegradable polymers, exhibit advantageous properties such as renewability, biocompatibility, and non-toxicity. Furthermore, certain biodegradable plastics are compatible with existing recycling streams intended for conventional plastics and are biodegradable in controlled and/or predicted environments. Recycling biodegradable plastics before their end-of-life (EOL) degradation further enhances their sustainability and reduces their carbon footprint. Since the production of biodegradable plastic is increasing and these materials will coexist with conventional plastics for many years to come, it is essential to identify the optimal recycling options for each of the most prevalent biodegradable plastics. The substitution of virgin biodegradable plastics by their recyclates leads to higher savings in the primary energy demand and reduces global warming impact. This review covers the current state of the mechanical, chemical, and bio-recycling of post-industrial and post-consumer waste of biodegradable plastics and their related composites. The effects of recycling on the chemical structure and thermomechanical properties of biodegradable plastics are also reported. Additionally, the improvement of biodegradable plastics by blending them with other polymers and nanoparticles is comprehensively discussed. Finally, the status of bioplastic usage, life cycle assessment, EOL management, bioplastic market, and the challenges associated with the recyclability of biodegradable plastics are addressed. This review gives comprehensive insights into the recycling processes that may be employed for the recycling of biodegradable plastics.
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Affiliation(s)
- Ritesh Kumar
- Department of Packaging, Yonsei University, 1 Yonseidae-gil, Wonju-si, Gangwon-do 26493, South Korea
| | - Kambiz Sadeghi
- Department of Packaging, Yonsei University, 1 Yonseidae-gil, Wonju-si, Gangwon-do 26493, South Korea
| | - Jaeyoung Jang
- Department of Packaging, Yonsei University, 1 Yonseidae-gil, Wonju-si, Gangwon-do 26493, South Korea
| | - Jongchul Seo
- Department of Packaging, Yonsei University, 1 Yonseidae-gil, Wonju-si, Gangwon-do 26493, South Korea.
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Kim J, Suh EH, Lee K, Kim G, Kim H, Jang J, Jung IH. Development of Alkylthiazole-Based Novel Thermoelectric Conjugated Polymers for Facile Organic Doping. Nanomaterials (Basel) 2023; 13:1286. [PMID: 37049379 PMCID: PMC10097314 DOI: 10.3390/nano13071286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 04/01/2023] [Accepted: 04/03/2023] [Indexed: 06/19/2023]
Abstract
In this study, we developed two novel conjugated polymers that can easily be doped with F4TCNQ organic dopants using a sequential doping method and then studied their organic thermoelectric (OTE) properties. In particular, to promote the intermolecular ordering of OTE polymers in the presence of the F4TCNQ dopant, alkylthiazole-based conjugated building blocks with highly planar backbone structures were synthesized and copolymerized. All polymers showed strong molecular ordering and edge-on orientation in the film state, even in the presence of the F4TCNQ organic dopant. Thus, the sequential doping process barely changed the molecular ordering of the polymer films while making efficient molecular doping. In addition, the doping efficiency was improved in the more π-extended polymer backbones with thienothiophene units due to the emptier space in the polymer lamellar structure to locate ionized F4TCNQ. Moreover, the study of organic thin-film transistors (OTFTs) revealed that higher hole mobility in OTFTs was the key to increasing the electrical conductivity of OTE devices fabricated using the sequential doping method.
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Affiliation(s)
- Junho Kim
- Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Eui Hyun Suh
- Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Kyumin Lee
- Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Gyuri Kim
- Department of Organic and Nano Engineering, and Human-Tech Convergence Program, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Hansu Kim
- Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Jaeyoung Jang
- Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - In Hwan Jung
- Department of Organic and Nano Engineering, and Human-Tech Convergence Program, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
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Lam L, Czer L, Runyan C, Otarola I, Jang J, Lau J, Gau M, Hernandez K, Ngo T, Cole R, Moriguchi J. Outcome of Enoxaparin Bridging in Left Ventricular Assist Devices (LVAD) in an Ambulatory Setting: A Continuation Study at Cedars Sinai Medical Center (CSMC). J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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12
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Goswami R, Jang J, Ruiz J, Desai S, Paghdar S, Malkani S, Yip D, Leoni J, Patel P, Lyle M, Nativi J. Artificial Intelligence to Predict Death or Transplant in ATTR Amyloidosis Cardiomyopathy. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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13
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Jang J, Ruiz J, Desai S, Sareyyupoglu B, Paghdar S, Malkani S, Landolfo K, Patel P, Nativi J, Yip D, Lyle M, Leoni J, Pham S, Goswami R. Mid-Term Survival in Patients with Advanced Heart Failure Receiving an Impella Device Intended as Bridge to Transplantation. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Jang J, Kook Y, Baek S, Kim J, Kim M, Lee S, Moon S, Kim J, Bae S, Ahn S, Jeong J. P217 Upstaging and lymph node metastasis rate in patients with ductal carcinoma in situ who received mastectomy regarding the necessary of sentinel lymph node biopsy. Breast 2023. [DOI: 10.1016/s0960-9776(23)00335-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023] Open
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Dhamane AD, Noxon V, Bruette R, Shah S, Ferri M, Liu X, Jang J, Luo X. Anticoagulant treatment patterns and thromboembolic events by tumor type among patients with VTE and cancer. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Patients with venous thromboembolism (VTE) and cancer are at higher risk of adverse outcomes (mortality, recurrent VTE etc.) versus patients with cancer alone; as such, clinical guidelines recommend anticoagulant treatment for patients with VTE and cancer. There is limited real world data about how anticoagulant treatment and thromboembolic outcomes differ by tumor type in patients with VTE and cancer. Understanding such differences may help identify appropriate anticoagulant treatment for specific tumor types.
Purpose
To describe anticoagulant treatment patterns and thromboembolic outcomes by tumor type among patients with VTE and cancer.
Methods
Patients with VTE and cancer age ≥65 were identified from the Surveillance, Epidemiology and End Results (SEER) Medicare database from 1/1/2014–12/31/2019. Patients were required to be enrolled for ≥6-months prior to their first VTE diagnosis (index) and without evidence of other conditions requiring anticoagulant (i.e., atrial fibrillation) prior to index. Cancer status and tumor type were identified from SEER or Medicare database in the 6-months prior through 30-days post VTE. This analysis focused on the following specific tumor types: high risk (brain, pancreas, and stomach) and common tumor types (breast, and prostate). Patients treated with an anticoagulant within 30-days after index were included in the final population. Major bleeding (MB) and recurrent VTE events were measured during follow-up (index date through earliest of disenrollment, death or 12/31/2019).
Results
A total of 3,546 anticoagulated patients with VTE and cancer of interest met all study criteria (breast [n=1,197], prostate [n=849], pancreatic [n=995], brain [n=248] and stomach [n=257] cancer). Patient mean age ranged from 73 (brain) to 76 (stomach) at index. Anticoagulant treatment patterns varied by tumor type (Figure 1). LMWH was more likely to be used in the 3 high risk tumor types whereas apixaban and rivaroxaban were more likely to be used in the 2 common tumor types. The incidence rate of recurrent VTE and major bleeding events also varied among different tumor types: ranging from 1.4 (breast) to 6.4 (pancreatic) per 100 person-years for recurrent VTE and from 4.3 (prostate) to 15.1 (pancreatic) per 100 person-years for major bleeding (Figure 2).
Conclusion
There are notable variations in anticoagulant treatment patters and the risks of major bleeding and recurrent VTE events by tumor type among patients with VTE and cancer. Further research is needed to understand which anticoagulant treatment option is more appropriate for VTE patients with specific tumor type.
Funding Acknowledgement
Type of funding sources: Private company. Main funding source(s): Pfizer Inc. and Bristol Myers Squibb Company
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Affiliation(s)
- A D Dhamane
- Bristol Myers Squibb Company , Lawrenceville , United States of America
| | - V Noxon
- STATinMED , Ann Arbor , United States of America
| | - R Bruette
- STATinMED , Ann Arbor , United States of America
| | - S Shah
- STATinMED , Ann Arbor , United States of America
| | - M Ferri
- Bristol Myers Squibb Company , Lawrenceville , United States of America
| | - X Liu
- Bristol Myers Squibb Company , Lawrenceville , United States of America
| | - J Jang
- Bristol Myers Squibb Company , Lawrenceville , United States of America
| | - X Luo
- Pfizer Inc. , Groton , United States of America
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Seo M, Ahn KJ, Choi Y, Shin NY, Jang J, Kim BS. Volumetric Measurement of Relative CBV Using T1-Perfusion-Weighted MRI with High Temporal Resolution Compared with Traditional T2*-Perfusion-Weighted MRI in Postoperative Patients with High-Grade Gliomas. AJNR Am J Neuroradiol 2022; 43:864-871. [PMID: 35618428 DOI: 10.3174/ajnr.a7527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 04/08/2022] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE T1-PWI with high temporal resolution may provide a reliable relative CBV value as a valid alternative to T2*-PWI under increased susceptibility. The purpose of this study was to assess the technical and clinical performance of T1-relative CBV in patients with postoperative high-grade gliomas. MATERIALS AND METHODS Forty-five MRIs of 34 patients with proved high-grade gliomas were included. In all MRIs, T1- and T2*-PWIs were both acquired and processed semiautomatically to generate relative CBV maps using a released commercial software. Lesion masks were overlaid on the relative CBV maps, followed by a histogram of the whole VOI. The intraclass correlation coefficient and Bland-Altman plots were used for quantitative and qualitative comparisons. Signal loss from both methods was compared using the Wilcoxon signed-rank test of zero voxel percentage. The MRIs were divided into a progression group (n = 20) and a nonprogression group (n = 14) for receiver operating characteristic curve analysis. RESULTS Fair intertechnique consistency was observed between the 90th percentiles of the T1- and T2*-relative CBV values (intraclass correlation coefficient = 0.558, P < .001). T2*-PWI revealed a significantly higher percentage of near-zero voxels than T1-PWI (17.7% versus 3.1%, P < .001). There was no statistically significant difference between the area under the curve of T1- and T2*-relative CBV (0.811 versus 0.793, P = .835). T1-relative CBV showed 100% sensitivity and 57.1% specificity for the detection of progressive lesions. CONCLUSIONS T1-relative CBV demonstrated exquisite diagnostic performance for detecting progressive lesions in postoperative patients with high-grade gliomas, suggesting the potential role of T1-PWI as a valid alternative to the traditional T2*-PWI.
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Affiliation(s)
- M Seo
- From the Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, the Catholic University of Korea, Seoul, Republic of Korea
| | - K-J Ahn
- From the Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, the Catholic University of Korea, Seoul, Republic of Korea
| | - Y Choi
- From the Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, the Catholic University of Korea, Seoul, Republic of Korea
| | - N-Y Shin
- From the Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, the Catholic University of Korea, Seoul, Republic of Korea
| | - J Jang
- From the Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, the Catholic University of Korea, Seoul, Republic of Korea
| | - B-S Kim
- From the Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, the Catholic University of Korea, Seoul, Republic of Korea
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Song J, Chie E, Kim Y, Ryu J, Lee S, Paik W, Cho I, Kim H, Jang J, Kang H. PO-1309 Safety and efficacy of neoadjuvant stereotactic ablative radiotherapy (SABR) in pancreatic cancer. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03273-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Bedford E, Russo V, Dickman C, Li B, Jezierski A, Kim D, Jang J, Yin Y, Harrington D, Sharma R, De la Vega L, Willerth S, Salmeron L, Morgan J, Kieffer T, Beyer S, Mohamed T, Witek R, Getsios S, Wadsworth S. Tissue Engineering, Embryonic, Organ and Other Tissue Specific Stem Cells: PARTNERING TO ADVANCE THE DEVELOPMENT OF TISSUE THERAPEUTICS WITH MICROFLUIDIC 3D BIOPRINTING. Cytotherapy 2022. [DOI: 10.1016/s1465-3249(22)00412-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Ruiz Morales J, Nativi-Nicolau J, Jang J, Patel P, Yip D, Leoni-Moreno J, Goswami R. Artificial Intelligence 12 Lead ECG Based Heart Age Estimation and 1-year Outcomes After Heart Transplantation. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.1671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Jang J, Nativi-Nicolau J, Yip D, Patel P, Leoni-Moreno J, Goswami R. Impact of SGLT2i Use on Functional Capacity in Heart Failure. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.1388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Kim H, Jang J, Song MJ, Kim G, Park CH, Lee DH, Lee SH, Chung JH. Attenuation of intrinsic aging of the skin via elimination of senescent dermal fibroblasts with senolytic drugs. J Eur Acad Dermatol Venereol 2022; 36:1125-1135. [PMID: 35274377 DOI: 10.1111/jdv.18051] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 02/15/2022] [Indexed: 11/27/2022]
Abstract
BACKGROUND Skin aging is caused by numerous factors that result in structural and functional changes in cutaneous components. Research has shown that senescent cells are known to accumulate in skin aging, however, the role of senescent cells in skin aging has not been defined. OBJECTIVES To elucidate the role of senescent cell in skin aging, we evaluated the effect of known senolytic drugs on senescent dermal fibroblasts. METHODS Primary human dermal fibroblasts (HDFs) were induced to senescence by long-term passaging, UV irradiation, and H2O2 treatment. Cell viability was measured after treatment of ABT-263 and ABT-737 on HDFs. Young and aged hairless mice were intradermally injected with drugs or vehicle on the dorsal skin for 10 days. Skin specimens were obtained and reverse-transcription quantitative PCR, western blotting, and histological analysis were performed. RESULTS We found that ABT-263 and ABT-737 induced selective clearance of senescent dermal fibroblasts, regardless of the method of senescence induction. Aged mouse skin treated with ABT-263 or ABT-737 showed increased collagen density, epidermal thickness, and proliferation of keratinocytes, as well as decreased senescence-associated secretory phenotypes, such as MMP-1 and IL-6. CONCLUSIONS Taken together, our results indicate that selective clearance of senescent skin cells can attenuate and improve skin aging phenotypes and that senolytic drugs may be of potential use as new therapeutic agents for treating aging of the skin.
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Affiliation(s)
- H Kim
- Department of Dermatology, Seoul National University College of Medicine.,Department of Biomedical Sciences, Seoul National University Graduate School.,Institute of Human-Environmental Interface Biology, Medical Research Center, Seoul National University
| | - J Jang
- Department of Dermatology, Seoul National University College of Medicine.,Institute of Human-Environmental Interface Biology, Medical Research Center, Seoul National University
| | - M J Song
- Department of Dermatology, Seoul National University College of Medicine.,Department of Biomedical Sciences, Seoul National University Graduate School.,Institute of Human-Environmental Interface Biology, Medical Research Center, Seoul National University
| | - G Kim
- Department of Dermatology, Seoul National University College of Medicine.,Department of Biomedical Sciences, Seoul National University Graduate School.,Institute of Human-Environmental Interface Biology, Medical Research Center, Seoul National University
| | - C-H Park
- Department of Dermatology, Seoul National University College of Medicine.,Institute of Human-Environmental Interface Biology, Medical Research Center, Seoul National University
| | - D H Lee
- Department of Dermatology, Seoul National University College of Medicine.,Institute of Human-Environmental Interface Biology, Medical Research Center, Seoul National University
| | - S-H Lee
- Department of Dermatology, Seoul National University College of Medicine.,Institute of Human-Environmental Interface Biology, Medical Research Center, Seoul National University
| | - J H Chung
- Department of Dermatology, Seoul National University College of Medicine.,Department of Biomedical Sciences, Seoul National University Graduate School.,Institute of Human-Environmental Interface Biology, Medical Research Center, Seoul National University.,Institute on Aging, Seoul National University, Seoul, Republic of Korea
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22
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Lee TH, Shin MG, Jung JG, Suh EH, Oh JG, Kang JH, Ghanem BS, Jang J, Lee JH, Pinnau I, Park HB. Facile suppression of intensified plasticization in glassy polymer thin films towards scalable composite membranes for propylene/propane separation. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.120215] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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23
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Dong K, Huh S, Lam G, Jang J, Franciosi A, Wilcox P, Quon B. 154: Characterizing pulmonary exacerbation inflammatory phenotypes in cystic fibrosis. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01579-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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24
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Hur SJ, Choi Y, Yoon J, Jang J, Shin NY, Ahn KJ, Kim BS. Intraindividual Comparison between the Contrast-Enhanced Golden-Angle Radial Sparse Parallel Sequence and the Conventional Fat-Suppressed Contrast-Enhanced T1-Weighted Spin-Echo Sequence for Head and Neck MRI. AJNR Am J Neuroradiol 2021; 42:2009-2015. [PMID: 34593379 DOI: 10.3174/ajnr.a7285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 07/25/2021] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE The golden-angle radial sparse parallel-volumetric interpolated breath-hold (GRASP-VIBE) sequence is a recently introduced imaging technique with high resolution. This study compared the image quality between conventional fat-suppressed T1-weighted TSE and GRASP-VIBE after gadolinium enhancement in the head and neck region. MATERIALS AND METHODS Data from 65 patients with clinical indications for head and neck MR imaging between September 2020 and January 2021 were retrospectively reviewed. Two radiologists assessed the overall image quality, overall artifacts, and image conspicuities in the oropharynx, hypopharynx, and cervical lymph nodes according to 5-point scores (best score: 5). Interobserver agreement was assessed using weighted κ statistics. The SNR and contrast-to-noise ratio were calculated and compared between the 2 sequences using a paired Wilcoxon signed rank test. RESULTS The analysis included 52 patients (mean age, 60 [SD, 14 ] years; male, 71.2% [37/52]) who were mostly diagnosed with head and neck malignancies (94.3% [50/52]). κ statistics ranged from slight agreement in cervical lymph node conspicuity (κ = 0.18) to substantial agreement in oropharyngeal mucosal conspicuity (κ = 0.80) (κ range, 0.18-0.80). Moreover, GRASP-VIBE demonstrated significantly higher mean scores in overall image quality (4.68 [SD, 0.41] versus 3.66 [SD, 0.73]), artifacts (4.47 [SD, 0.48] versus 3.58 [SD, 0.71]), oropharyngeal mucosal conspicuity (4.85 [SD, 0.41] versus 4.11 [SD, 0.79]), hypopharyngeal mucosal conspicuity (4.84 [SD, 0.34] versus 3.58 [SD, 0.81]), and cervical lymph node conspicuity (4.79 [SD, 0.32] versus 4.08 [SD, 0.64]) than fat-suppressed T1-weighted TSE (all, P < .001). Furthermore, GRASP-VIBE demonstrated a higher SNR (22.8 [SD, 11.5] versus 11.3 [SD, 5.6], P < .001) and contrast-to-noise ratio (4.7 [SD, 5.4] versus 2.3 [SD, 2.7], P = .059) than fat-suppressed T1-weighted TSE. CONCLUSIONS GRASP-VIBE provided better image quality with fewer artifacts than conventional fat-suppressed T1-weighted TSE for the head and neck regions.
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Affiliation(s)
- S-J Hur
- From the Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Y Choi
- From the Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - J Yoon
- From the Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - J Jang
- From the Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - N-Y Shin
- From the Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - K-J Ahn
- From the Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - B-S Kim
- From the Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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25
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Lee C, Kim K, Kim H, Kwon W, Jang J, Lee K, Oh D, Lee K, Chie E. PD-0916 role of adjuvant chemoradiotherapy in perihilar bile duct cancer. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)07195-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Palowski A, Yang Z, Jang J, Dado T, Urriola PE, Shurson GC. Determination of in vitro dry matter, protein, and fiber digestibility and fermentability of novel corn coproducts for swine and ruminants. Transl Anim Sci 2021; 5:txab055. [PMID: 34041447 PMCID: PMC8140363 DOI: 10.1093/tas/txab055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Accepted: 03/17/2021] [Indexed: 11/13/2022] Open
Abstract
New processes are being used in some dry-grind ethanol plants in the United States and Brazil to improve ethanol yield and efficiency of production while also providing nutritionally enhanced corn coproducts compared with conventional corn distillers dried grains with solubles (DDGS). The objectives of this study were to determine the chemical composition and in vitro digestibility of 5 conventional corn DDGS sources and 10 emerging novel corn coproducts for swine and ruminants, and compare coproducts produced using similar processes in the United States and Brazil. Chemical composition, on a dry matter (DM) basis, among the 15 coproducts ranged from 18.5% to 54.7% for crude protein (CP), 12.3% to 51.4% for neutral detergent fiber (NDF), 1.6% to 8.6% for acid detergent fiber, 4.7% to 12.3% for ether extract, and 1.6% to 8.6% for ash. For swine, in vitro hydrolysis of DM and CP were greater (P < 0.01) for the three U.S. corn DDGS sources compared with the two Brazilian corn DDGS sources, but in vitro fermentability of DM was comparable (P > 0.05) among all sources except one U.S. DDGS source that had less fermentable DM. High-protein and yeast dried distillers grains (Ultramax, UM; StillPro, SP) coproducts also had comparable (P > 0.05) DM fermentability for swine, but UM coproducts had greater (P < 0.01) DM and CP hydrolysis compared with SP. High-protein distillers dried grains (HP-DDG) from Brazil had greater (P < 0.01) DM and CP hydrolysis, but less (P < 0.01) DM fermentability for swine than HP-DDG produced in the United States, using the same process. For ruminants, total DM digestibility was greater (P < 0.01) in conventional DDGS sources from the United States compared with the two DDGS sources from Brazil. Total protein digestibility for ruminants was comparable and above 81% for all coproducts except for a DDGS source from Brazil, a HP-DDG source from the United States, and a UM sample. Interestingly, the corn fiber + solubles coproduct had not only relatively high digestibility of NDF (67.9%), DM (91.6%), and total CP (81.9%) for ruminants, but it also had relatively high total tract digestibility of DM (86.2%) and CP (69.9%) for swine. These results suggest that nutrient digestibility of conventional DDGS sources produced in the United States appear to be greater than corn Brazilian DDGS sources, but new process technologies being implemented in ethanol and coproduct production in both countries can enhance the nutritional value of corn coproducts for both swine and ruminants.
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Affiliation(s)
- A Palowski
- Department of Animal Science, University of Minnesota, St. Paul, MN 55108
| | - Z Yang
- Department of Animal Science, University of Minnesota, St. Paul, MN 55108
| | - J Jang
- Department of Animal Science, University of Minnesota, St. Paul, MN 55108
| | - T Dado
- Department of Animal Science, University of Minnesota, St. Paul, MN 55108
| | - P E Urriola
- Department of Animal Science, University of Minnesota, St. Paul, MN 55108
| | - G C Shurson
- Department of Animal Science, University of Minnesota, St. Paul, MN 55108
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27
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Kim TY, Kim BS, Oh JG, Park SC, Jang J, Hamann TW, Kang YS, Bang JH, Giménez S, Kang YS. Interfacial Engineering at Quantum Dot-Sensitized TiO 2 Photoelectrodes for Ultrahigh Photocurrent Generation. ACS Appl Mater Interfaces 2021; 13:6208-6218. [PMID: 33523646 PMCID: PMC8576758 DOI: 10.1021/acsami.0c19352] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 01/20/2021] [Indexed: 06/12/2023]
Abstract
Metal oxide semiconductor/chalcogenide quantum dot (QD) heterostructured photoanodes show photocurrent densities >30 mA/cm2 with ZnO, approaching the theoretical limits in photovoltaic (PV) cells. However, comparative performance has not been achieved with TiO2. Here, we applied a TiO2(B) surface passivation layer (SPL) on TiO2/QD (PbS and CdS) and achieved a photocurrent density of 34.59 mA/cm2 under AM 1.5G illumination for PV cells, the highest recorded to date. The SPL improves electron conductivity by increasing the density of surface states, facilitating multiple trapping/detrapping transport, and increasing the coordination number of TiO2 nanoparticles. This, along with impeded electron recombination, led to enhanced collection efficiency, which is a major factor for performance. Furthermore, SPL-treated TiO2/QD photoanodes were successfully exploited in photoelectrochemical water splitting cells, showing an excellent photocurrent density of 14.43 mA/cm2 at 0.82 V versus the Reversible Hydrogen Electrode (RHE). These results suggest a new promising strategy for the development of high-performance photoelectrochemical devices.
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Affiliation(s)
- Tea-Yon Kim
- Department
of Chemistry, Michigan State University, East Lansing, Michigan 48824-1322, United States
| | - Byung Su Kim
- Department
of Energy Engineering and Center for Next Generation Dye-Sensitized
Solar Cells, Hanyang University, Seoul 04763, Korea
| | - Jong Gyu Oh
- Department
of Energy Engineering, Hanyang University, Seoul 04763, Korea
| | - Seul Chan Park
- Department
of Energy Engineering and Center for Next Generation Dye-Sensitized
Solar Cells, Hanyang University, Seoul 04763, Korea
| | - Jaeyoung Jang
- Department
of Energy Engineering, Hanyang University, Seoul 04763, Korea
| | - Thomas W. Hamann
- Department
of Chemistry, Michigan State University, East Lansing, Michigan 48824-1322, United States
| | - Young Soo Kang
- Korea
Center for Artificial Photosynthesis and Department of Chemistry, Sogang University, Seoul 04107, Korea
| | - Jin Ho Bang
- Department
of Chemical and Molecular Engineering and Department of Applied Chemistry,
Center for Bionano Intelligence Education and Research, Hanyang University, Ansan 15588, Gyeonggi-do, Korea
| | - Sixto Giménez
- Institute
of Advanced Materials (INAM), Universitat
Jaume I, Castelló 12006, Spain
| | - Yong Soo Kang
- Department
of Energy Engineering and Center for Next Generation Dye-Sensitized
Solar Cells, Hanyang University, Seoul 04763, Korea
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Yang HS, Noh SH, Suh EH, Jung J, Oh JG, Lee KH, Jang J. Enhanced Stabilities and Production Yields of MAPbBr 3 Quantum Dots and Their Applications as Stretchable and Self-Healable Color Filters. ACS Appl Mater Interfaces 2021; 13:4374-4384. [PMID: 33448782 DOI: 10.1021/acsami.0c19287] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Organic-inorganic hybrid CH3NH3PbBr3 (MAPbBr3) perovskite quantum dots (PQDs) are considered as promising and cost-effective building blocks for various optoelectronic devices. However, during centrifugation for the purification of these PQDs, commonly used polar protic and aprotic non-solvents (e.g., methanol and acetone) can destroy the nanocrystal structure of MAPbBr3 perovskites, which will significantly reduce the production yields and degrade the optical properties of the PQDs. This study demonstrates the use of methyl acetate (MeOAc) as an effective non-solvent for purifying as-synthesized MAPbBr3 PQDs without causing severe damage, which facilitates attainment of stable PQD solutions with high production yields. The MeOAc-washed MAPbBr3 PQDs maintain their high photoluminescence (PL) quantum yields and crystalline structures for long periods in solution states. MeOAc undergoes a hydrolysis reaction in the presence of the PQDs, and the resulting acetate anions partially replace the original surface ligands without damaging the PQD cores. Time-resolved PL analysis reveals that the MeOAc-washed PQDs show suppressed non-radiative recombination and a longer PL lifetime than acetone-washed and methanol-washed PQDs. Finally, it is demonstrated that a composite of the MAPbBr3 PQDs and a thermoplastic elastomer (polystyrene-block-polyisoprene-block-polystyrene) is feasible as a stretchable and self-healable green color filter for a white light-emitting diode device.
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Affiliation(s)
- Han Sol Yang
- Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Sung Hoon Noh
- Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Eui Hyun Suh
- Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Jaemin Jung
- Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Jong Gyu Oh
- Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Kyeong Ho Lee
- Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Jaeyoung Jang
- Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of Korea
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Kim BS, Park SC, Kim DH, Moon GH, Oh JG, Jang J, Kang MS, Yoon KB, Kang YS. Bipolar Membranes to Promote Formation of Tight Ice-Like Water for Efficient and Sustainable Water Splitting. Small 2020; 16:e2002641. [PMID: 32964649 DOI: 10.1002/smll.202002641] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 07/23/2020] [Indexed: 06/11/2023]
Abstract
Bipolar membranes (BPMs) have recently received much attention for their potential to improve the water dissociation reaction (WDR) at their junction by utilizing catalysts. Herein, composite catalysts (Fe2 O3 @GO) comprising hematite nanoparticles (α-Fe2 O3 ) grown on 2D graphene oxide (GO) nanosheets are reported, which show unprecedentedly high water dissociation performance in the BPM. Furthermore, new catalytic roles in facilitating WDR at the catalyst-water interface are mechanistically elucidated. It is demonstrated that the partially dissociated bound water, formed by the strongly Lewis-acidic Fe atoms of the Fe2 O3 @GO catalyst, helps the "ice-like water" to become tighter, consequently resulting in weaker intramolecular OH bonds, which reduces activation barriers and thus significantly improves the WDR rate. Notably, Fe2 O3 @GO-incorporated BPM shows an extremely low water dissociation potential (0.89 V), compared to commercially available BPM (BP-1E, 1.13 V) at 100 mA cm-2 , and it is quite close to the theoretical potential required for WDR (0.83 V). This performance reduces the required electrical energy consumption for water splitting by ≈40%, as compared to monopolar (Nafion 212 and Selemion AMV) membranes. These results can provide a new approach for the development of water dissociation catalysts and BPMs for realizing highly efficient water splitting systems.
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Affiliation(s)
- Byung Su Kim
- Department of Energy Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Seul Chan Park
- Department of Energy Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Do-Hyeong Kim
- Department of Green Chemical Engineering, Sangmyung University, 31 Sangmyungdae-gil, Dongmanm-gu, Cheonan, 31066, Republic of Korea
| | - Gi Hyeon Moon
- Department of Energy Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Jong Gyu Oh
- Department of Energy Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Jaeyoung Jang
- Department of Energy Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Moon-Sung Kang
- Department of Green Chemical Engineering, Sangmyung University, 31 Sangmyungdae-gil, Dongmanm-gu, Cheonan, 31066, Republic of Korea
| | - Kyung Byung Yoon
- Department of Chemistry, Korea Center for Artificial Photosynthesis, Sogang University, Seoul, 04107, Republic of Korea
| | - Yong Soo Kang
- Department of Energy Engineering, Hanyang University, Seoul, 04763, Republic of Korea
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Choi Y, Nam Y, Jang J, Shin NY, Ahn KJ, Kim BS, Lee YS, Kim MS. Prediction of Human Papillomavirus Status and Overall Survival in Patients with Untreated Oropharyngeal Squamous Cell Carcinoma: Development and Validation of CT-Based Radiomics. AJNR Am J Neuroradiol 2020; 41:1897-1904. [PMID: 32943420 DOI: 10.3174/ajnr.a6756] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 07/03/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND PURPOSE Human papillomavirus is a prognostic marker for oropharyngeal squamous cell carcinoma. We aimed to determine the value of CT-based radiomics for predicting the human papillomavirus status and overall survival in patients with oropharyngeal squamous cell carcinoma. MATERIALS AND METHODS Eighty-six patients with oropharyngeal squamous cell carcinoma were retrospectively collected and grouped into training (n = 61) and test (n = 25) sets. For human papillomavirus status and overall survival prediction, radiomics features were selected via a random forest-based algorithm and Cox regression analysis, respectively. Relevant features were used to build multivariate Cox regression models and calculate the radiomics score. Human papillomavirus status and overall survival prediction were assessed via the area under the curve and concordance index, respectively. The models were validated in the test and The Cancer Imaging Archive cohorts (n = 78). RESULTS For prediction of human papillomavirus status, radiomics features yielded areas under the curve of 0.865, 0.747, and 0.834 in the training, test, and validation sets, respectively. In the univariate Cox regression, the human papillomavirus status (positive: hazard ratio, 0.257; 95% CI, 0.09-0.7; P = .008), T-stage (≥III: hazard ratio, 3.66; 95% CI, 1.34-9.99; P = .011), and radiomics score (high-risk: hazard ratio, 3.72; 95% CI, 1.21-11.46; P = .022) were associated with overall survival. The addition of the radiomics score to the clinical Cox model increased the concordance index from 0.702 to 0.733 (P = .01). Validation yielded concordance indices of 0.866 and 0.720. CONCLUSIONS CT-based radiomics may be useful in predicting human papillomavirus status and overall survival in patients with oropharyngeal squamous cell carcinoma.
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Affiliation(s)
- Y Choi
- Department of Radiology (Y.C., Y.N., J.J., N.-Y.S, K.-J.A., B.-S.K.), Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Y Nam
- Department of Radiology (Y.C., Y.N., J.J., N.-Y.S, K.-J.A., B.-S.K.), Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Division of Biomedical Engineering (Y.N.), Hankuk University of Foreign Studies, Yongin-Si, Gyeonggi-do, Republic of Korea
| | - J Jang
- Department of Radiology (Y.C., Y.N., J.J., N.-Y.S, K.-J.A., B.-S.K.), Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - N-Y Shin
- Department of Radiology (Y.C., Y.N., J.J., N.-Y.S, K.-J.A., B.-S.K.), Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - K-J Ahn
- Department of Radiology (Y.C., Y.N., J.J., N.-Y.S, K.-J.A., B.-S.K.), Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - B-S Kim
- Department of Radiology (Y.C., Y.N., J.J., N.-Y.S, K.-J.A., B.-S.K.), Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Y-S Lee
- Department of Hospital Pathology (Y.-S.L.), Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - M-S Kim
- Department of Otolaryngology-Head and Neck Surgery (M.S.K.), Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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31
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Kim W, Jang J, Han S, Kim S, Oh JS, Kim BS, Kim YJ, Kim SW. Absolute laser ranging by time-of-flight measurement of ultrashort light pulses [Invited]. J Opt Soc Am A Opt Image Sci Vis 2020; 37:B27-B35. [PMID: 32902417 DOI: 10.1364/josaa.395157] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 06/15/2020] [Indexed: 06/11/2023]
Abstract
Ultrashort pulse lasers are emerging as an advanced tool of distance measurement, with their unique temporal and spectral characteristics being extended to diverse principles of absolute ranging and instrumentation. Here, a systematic methodology is presented for absolute ranging by means of the time-of-flight measurement of ultrashort light pulses using dual-comb asynchronous optical sampling. Based on an elaborate uncertainty analysis, influencing system parameters such as the pulse duration, repetition rate, and averaging time are optimized to achieve a sub-µm measurement accuracy. The absolute ranging system developed in this study demonstrates a combined standard uncertainty of 0.986 µm for a 0.5 ms averaging over a distance range of 3.0 m, with a further reduction to 0.056 µm when the averaging time is increased to 0.5 s. The outstanding performance leads to unprecedented multitarget applications: machine feed control with thermal error compensation in real time as well as the nondestructive inspection of multilens assembly in a production line.
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Jeon S, Jang J, Lee G, Park S, Lee SK, Kim H, Choi J. Assessment of neovascularization during bone healing using contrast-enhanced ultrasonography in a canine tibial osteotomy model: a preliminary study. J Vet Sci 2020; 21:e10. [PMID: 31940689 PMCID: PMC7000898 DOI: 10.4142/jvs.2020.21.e10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 10/16/2019] [Accepted: 11/09/2019] [Indexed: 01/08/2023] Open
Abstract
Blood perfusion of skeletal muscle and callus was evaluated using contrast-enhanced ultrasonography (CEUS) in a canine osteotomy model to determine the applicability of CEUS in the assessment of neovascularization during fracture healing and to compare the vascular signals on CEUS between external skeletal fixation and cast-applied dogs. In 6 Beagle dogs, a simple transverse osteotomy was performed at the left tibial shaft and external skeletal fixation (n = 3) or a cast (n = 3) was applied. Radiography, power Doppler ultrasonography (power Doppler), and CEUS were performed until complete union was achieved. On CEUS, vascular changes were quantitatively evaluated by measuring peak intensity (PI) and time to PI in the soft tissue and callus and by counting the vascular signals. Vascular signals from the soft tissue were detected on power Doppler and CEUS on day 2. Significantly more vascular signals were detected by CEUS than by power Doppler. On CEUS, PI in the surrounding soft tissue was markedly increased after the fracture line appeared indistinctively changed on radiography in all dogs. In the cast-applied dogs, vascular signals from the periosteal and endosteal callus were detected on CEUS before mineralized callus was observed on radiography. CEUS was useful in assessing the vascularity of soft tissue and callus, particularly in indirect fracture healing, and provided indications of a normally healing fracture.
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Affiliation(s)
- Sunghoon Jeon
- College of Veterinary Medicine and BK21 Plus Project Team, Chonnam National University, Gwangju 61186, Korea
| | - Jaeyoung Jang
- Haemaru Referral Animal Hospital, Seongnam 13590, Korea
| | - Gahyun Lee
- College of Veterinary Medicine and BK21 Plus Project Team, Chonnam National University, Gwangju 61186, Korea
| | - Seungjo Park
- College of Veterinary Medicine and BK21 Plus Project Team, Chonnam National University, Gwangju 61186, Korea
| | - Sang Kwon Lee
- College of Veterinary Medicine and BK21 Plus Project Team, Chonnam National University, Gwangju 61186, Korea
| | - Hyunwook Kim
- Haemaru Referral Animal Hospital, Seongnam 13590, Korea
| | - Jihye Choi
- College of Veterinary Medicine and BK21 Plus Project Team, Chonnam National University, Gwangju 61186, Korea.
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Eum Y, Kim BS, Chae IS, Moon GH, Park SC, Jang J, Kang YS. Nitroaromatic Compounds to Induce a Partial Positive Charge on the Silver Nanoparticle Surface for Facilitated Transport Membranes for Olefin/Paraffin Separation. Macromol Res 2020. [DOI: 10.1007/s13233-020-8131-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Jang M, Seong S, Kwon D, Jang J, Park J, Suh K. 368 Epidemiology and clinical outcomes of 151 patients with mycosis fungoides at the Kosin University Gospel Hospital: Retrospective 27-year review. J Invest Dermatol 2020. [DOI: 10.1016/j.jid.2020.03.376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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35
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Moon GH, Park S, Park SC, Kim BS, Jang J, Kang YS. Intrinsically microporous oligomers as organic porogens for mixed-matrix membranes. KOREAN J CHEM ENG 2020. [DOI: 10.1007/s11814-020-0528-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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36
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Jo Y, Oh JG, Kim C, An TK, Jang J, Lee J. Synthetic strategy for thienothiophene-benzotriazole-based polymers with high backbone planarity and solubility for field-effect transistor applications. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2020.02.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Lee J, Kim S, Lee S, Suh I, Jang J, Jhoo J. 0047 The Change in Melatonin Rhythm Depending on Dementia Severity in Alzheimer’s Disease (AD) Patients. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
In Alzheimer’s disease (AD), both sleep and circadian dysfunctions are commonly reported and these are associated with neurodegenerative change. Actually, it has been reported that changes in circadian rhythms in AD were apparently discrete from those seen in normal aging. Previous studies reported the delayed phase in the activity or core body temperature rhythms in severe AD patients compared to normal controls. However, it is unknown whether similar changes in melatonin rhythms occur in AD patients who were not severely demented. We aimed to compare melatonin rhythms depending on dementia severity in mild and moderate AD patients.
Methods
We recruited AD patients of mild or moderate degree who had the Pittsburgh Sleep Quality Index (PSQI) score of 5 or greater and/or complained insomnia symptoms more than 3 times a week for a month. The patients were classified according to their Clinical Dementia Rating (CDR) score into 3 groups (CDR=0.5, 1, 2). The dim light melatonin onset (DLMO) was determined from seven hourly saliva samples obtained in the laboratory prior to sleep onset measured by actigraphy. The phase angle between the DLMO and sleep onset (PA-SO), and that between the DLMO and midsleep time (PA-MST) were calculated. Each group included 13, 13 and 6 AD patients with the CDR score of 0.5, 1 and 2, respectively. The DLMO and PA were compared among the 3 groups, and correlation analyses of the DLMO and PA with the MMSE in the Korean version of CERAD Packet (MMSE-KC) scores were done in total patients.
Results
There was no significant difference in the DLMO and PA between the 3 groups. The MMSE-KC score was positively correlated with the DLMO and negatively correlated with the PA-MST.
Conclusion
There were no changes in melatonin rhythms according to dementia severity in mild and moderate AD patients with sleep complaints. However, our study showed that earlier melatonin phase was associated with more impaired cognitive function.
Support
Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (2017R1A2B4003493)
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Affiliation(s)
- J Lee
- Department of Psychiatry, Kangwon National University Hospital, Chunchon, KOREA, REPUBLIC OF
- Department of Psychiatry, Kangwon National University School of Medicine, Chunchon, KOREA, REPUBLIC OF
| | - S Kim
- Department of Psychiatry, Doeun Hospital, Jincheon, KOREA, REPUBLIC OF
| | - S Lee
- Department of Psychiatry, Silverheals Hospital, Namyangju, KOREA, REPUBLIC OF
| | - I Suh
- Department of Laboratory Medicine, Kangwon National University Hospital, Chunchon, KOREA, REPUBLIC OF
| | - J Jang
- Department of Neurology, Kangwon National University Hospital, Chunchon, KOREA, REPUBLIC OF
| | - J Jhoo
- Department of Psychiatry, Kangwon National University Hospital, Chunchon, KOREA, REPUBLIC OF
- Department of Psychiatry, Kangwon National University School of Medicine, Chunchon, KOREA, REPUBLIC OF
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Jeon S, Bhak Y, Choi Y, Jeon Y, Kim S, Jang J, Jang J, Blazyte A, Kim C, Kim Y, Shim J, Kim N, Kim YJ, Park SG, Kim J, Cho YS, Park Y, Kim HM, Kim BC, Park NH, Shin ES, Kim BC, Bolser D, Manica A, Edwards JS, Church G, Lee S, Bhak J. Korean Genome Project: 1094 Korean personal genomes with clinical information. Sci Adv 2020; 6:eaaz7835. [PMID: 32766443 PMCID: PMC7385432 DOI: 10.1126/sciadv.aaz7835] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 03/19/2020] [Indexed: 05/30/2023]
Abstract
We present the initial phase of the Korean Genome Project (Korea1K), including 1094 whole genomes (sequenced at an average depth of 31×), along with data of 79 quantitative clinical traits. We identified 39 million single-nucleotide variants and indels of which half were singleton or doubleton and detected Korean-specific patterns based on several types of genomic variations. A genome-wide association study illustrated the power of whole-genome sequences for analyzing clinical traits, identifying nine more significant candidate alleles than previously reported from the same linkage disequilibrium blocks. Also, Korea1K, as a reference, showed better imputation accuracy for Koreans than the 1KGP panel. As proof of utility, germline variants in cancer samples could be filtered out more effectively when the Korea1K variome was used as a panel of normals compared to non-Korean variome sets. Overall, this study shows that Korea1K can be a useful genotypic and phenotypic resource for clinical and ethnogenetic studies.
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Affiliation(s)
- Sungwon Jeon
- Korean Genomics Center (KOGIC), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Department of Biomedical Engineering, School of Life Sciences, UNIST, Ulsan 44919, Republic of Korea
| | - Youngjune Bhak
- Korean Genomics Center (KOGIC), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Department of Biomedical Engineering, School of Life Sciences, UNIST, Ulsan 44919, Republic of Korea
- Clinomics Inc., Ulsan 44919, Republic of Korea
| | - Yeonsong Choi
- Korean Genomics Center (KOGIC), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Department of Biomedical Engineering, School of Life Sciences, UNIST, Ulsan 44919, Republic of Korea
| | - Yeonsu Jeon
- Korean Genomics Center (KOGIC), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Department of Biomedical Engineering, School of Life Sciences, UNIST, Ulsan 44919, Republic of Korea
| | - Seunghoon Kim
- Korean Genomics Center (KOGIC), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Department of Biomedical Engineering, School of Life Sciences, UNIST, Ulsan 44919, Republic of Korea
| | - Jaeyoung Jang
- Korean Genomics Center (KOGIC), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Jinho Jang
- Korean Genomics Center (KOGIC), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Department of Biomedical Engineering, School of Life Sciences, UNIST, Ulsan 44919, Republic of Korea
| | - Asta Blazyte
- Korean Genomics Center (KOGIC), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Changjae Kim
- Korean Genomics Center (KOGIC), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Clinomics Inc., Ulsan 44919, Republic of Korea
| | - Yeonkyung Kim
- Korean Genomics Center (KOGIC), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Jungae Shim
- Korean Genomics Center (KOGIC), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Nayeong Kim
- Korean Genomics Center (KOGIC), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Yeo Jin Kim
- Korean Genomics Center (KOGIC), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Seung Gu Park
- Korean Genomics Center (KOGIC), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Jungeun Kim
- Personal Genomics Institute (PGI), Genome Research Foundation (GRF), Osong 28160, Republic of Korea
| | | | - Yeshin Park
- Clinomics Inc., Ulsan 44919, Republic of Korea
| | - Hak-Min Kim
- Korean Genomics Center (KOGIC), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Department of Biomedical Engineering, School of Life Sciences, UNIST, Ulsan 44919, Republic of Korea
- Clinomics Inc., Ulsan 44919, Republic of Korea
| | | | - Neung-Hwa Park
- Department of Internal Medicine, University of Ulsan College of Medicine, Ulsan University Hospital, Ulsan 44033, Republic of Korea
- Biomedical Research Center, University of Ulsan College of Medicine, Ulsan University Hospital, Ulsan 44033, Republic of Korea
| | - Eun-Seok Shin
- Division of Cardiology, Department of Internal Medicine, Ulsan Medical Center, Ulsan 44686, Republic of Korea
| | | | - Dan Bolser
- Clinomics Inc., Ulsan 44919, Republic of Korea
| | - Andrea Manica
- Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK
| | - Jeremy S. Edwards
- Department of Chemistry and Chemical Biology, University of New Mexico and University of New Mexico Comprehensive Cancer Center, Albuquerque, NM 87106, USA
| | - George Church
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Semin Lee
- Korean Genomics Center (KOGIC), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Department of Biomedical Engineering, School of Life Sciences, UNIST, Ulsan 44919, Republic of Korea
| | - Jong Bhak
- Korean Genomics Center (KOGIC), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Department of Biomedical Engineering, School of Life Sciences, UNIST, Ulsan 44919, Republic of Korea
- Clinomics Inc., Ulsan 44919, Republic of Korea
- Personal Genomics Institute (PGI), Genome Research Foundation (GRF), Osong 28160, Republic of Korea
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Anderson E, Jang J, Venterea R, Feyereisen G, Ishii S. Isolation and characterization of denitrifiers from woodchip bioreactors for bioaugmentation application. J Appl Microbiol 2020; 129:590-600. [DOI: 10.1111/jam.14655] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 02/28/2020] [Accepted: 03/27/2020] [Indexed: 12/13/2022]
Affiliation(s)
- E.L. Anderson
- Department of Soil, Water, and Climate University of Minnesota St. Paul MN USA
| | - J. Jang
- BioTechnology Institute University of Minnesota St. Paul MN USA
| | - R.T. Venterea
- Department of Soil, Water, and Climate University of Minnesota St. Paul MN USA
- USDA‐ARS Soil and Water Management Research Unit St. Paul MN USA
| | - G.W. Feyereisen
- USDA‐ARS Soil and Water Management Research Unit St. Paul MN USA
| | - S. Ishii
- Department of Soil, Water, and Climate University of Minnesota St. Paul MN USA
- BioTechnology Institute University of Minnesota St. Paul MN USA
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Jeong MK, Lee K, Kang J, Jang J, Jung IH. Thiophene backbone-based polymers with electron-withdrawing pendant groups for application in organic thin-film transistors. NEW J CHEM 2020. [DOI: 10.1039/d0nj01080d] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The suboptimal molecular ordering of by PF2-BDD quick freezing during hot-solution spin-coating hindered an efficient hole transport, whereas the more crystalline structure of PT2-BDD resulted in higher hole mobility in the corresponding OTFT.
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Affiliation(s)
- Moon-Ki Jeong
- Department of Chemistry
- Kookmin University
- Seoul 02707
- Republic of Korea
| | - Kyumin Lee
- Department of Energy Engineering
- Hanyang University
- Seoul 04763
- Republic of Korea
| | - Jinhyeon Kang
- Department of Chemistry
- Kookmin University
- Seoul 02707
- Republic of Korea
| | - Jaeyoung Jang
- Department of Energy Engineering
- Hanyang University
- Seoul 04763
- Republic of Korea
| | - In Hwan Jung
- Department of Chemistry
- Kookmin University
- Seoul 02707
- Republic of Korea
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41
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Jung J, Suh EH, Jeong YJ, Yang HS, Lee T, Jang J. Efficient Debundling of Few-Walled Carbon Nanotubes by Wrapping with Donor-Acceptor Polymers for Improving Thermoelectric Properties. ACS Appl Mater Interfaces 2019; 11:47330-47339. [PMID: 31741375 DOI: 10.1021/acsami.9b16012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Organic thermoelectric (TE) materials have great potential as sustainable energy sources for powering flexible and wearable electronic devices via harvesting of human body heat. Recent advances in soluble conjugated polymer/carbon nanotube (CNT) composites have facilitated achievement of high TE power factors. However, the effects of conjugated polymers on the debundling and electrical percolation of CNTs and on the TE properties of their composites are not yet fully understood. Herein, we introduce a novel type of polymer/CNT composite composed of a donor-acceptor (D-A)-type polymer and few-walled CNTs (FWCNTs). Three kinds of D-A polymers are employed to disperse FWCNTs, and the photophysical, morphological, and TE properties of the resulting polymer/FWCNT composites are compared with those of composites composed of FWCNTs dispersed with conventional donor-only poly(3-hexylthiophene). The results reveal that the strong intermolecular interaction forces and high backbone planarity of the D-A polymers facilitate effective debundling of FWCNTs, which results in much smaller bundle sizes. Consequently, the D-A polymer/FWCNT composite films show superior electrical percolation and TE performances with improved power factors of up to 459 μW/mK2. Finally, we demonstrate the feasibility of the D-A polymer/FWCNT composites for use in the fabrication of a flexible TE generator, which shows a maximum power output of 210 nW at a temperature gradient of 20 K.
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Affiliation(s)
- Jaemin Jung
- Department of Energy Engineering , Hanyang University , Seoul 04763 , Republic of Korea
| | - Eui Hyun Suh
- Department of Energy Engineering , Hanyang University , Seoul 04763 , Republic of Korea
| | - Yong Jin Jeong
- Department of Energy Engineering , Hanyang University , Seoul 04763 , Republic of Korea
- Department of Materials Science & Engineering , Korea National University of Transportation , Chungju 27469 , Republic of Korea
| | - Han Sol Yang
- Department of Energy Engineering , Hanyang University , Seoul 04763 , Republic of Korea
| | - Taekseong Lee
- Department of Energy Engineering , Hanyang University , Seoul 04763 , Republic of Korea
| | - Jaeyoung Jang
- Department of Energy Engineering , Hanyang University , Seoul 04763 , Republic of Korea
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Jen J, Jang J, Zhang J, Tang A, Pierson K, Schrandt A, Xie H, Yang P, Mandreka S, Mansfield A. P1.01-45 A NGS-Based ctDNA Test to Monitor Disease Progression and Treatment Response in Advanced Stage Non-Small Cell Lung Cancer. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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43
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Jang J, Haberecker M, Curioni A, Janker F, Soltermann A, Gil-Bazo I, Hwang I, Kwon K, Weder W, Jungraithmayr W. EP1.03-33 CD26/DPP4 as a Novel Prognostic Marker for Lung Adenocarcinoma. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.2114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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44
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Kim N, Jung Y, Jang J, Cheon D, Koh W, Kim J, Ko J, Ro Y. 563 Incisional biopsy-induced spontaneous regression with halo phenomenon in a congenital melanocytic nevus. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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45
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Choi J, Kim B, Choi Y, Shin NY, Jang J, Choi HS, Jung SL, Ahn KJ. Image Quality of Low-Dose Cerebral Angiography and Effectiveness of Clinical Implementation on Diagnostic and Neurointerventional Procedures for Intracranial Aneurysms. AJNR Am J Neuroradiol 2019; 40:827-833. [PMID: 30948380 DOI: 10.3174/ajnr.a6029] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Accepted: 02/27/2019] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Awareness of the potential for exposure to high doses of radiation from interventional radiologic procedures has increased. The purpose of this study was to evaluate image quality and dose reduction of low-dose cerebral angiography during diagnostic and therapeutic procedures for intracranial aneurysms. MATERIALS AND METHODS A retrospective review of 1137 prospectively collected patients between January 2012 and June 2014 was performed. Beginning in April 2013, a dose-reduction strategy was implemented. Subjective image-quality assessment of 506 standard and 540 low-dose cerebral angiography images was performed by 2 neuroradiologists using a 5-point scale and was tested using noninferiority statistics. Radiation dose-area product and air kerma of 1046 diagnostic and 317 therapeutic procedures for intracranial aneurysms were analyzed and compared between groups before (group 1) and after (group 2) clinical implementation of a dose-reduction strategy. RESULTS The image quality of the low-dose cerebral angiography was not inferior on the basis of results from the 2 readers. For diagnostic cerebral angiography, the mean dose-area product and air kerma were 140.8 Gy×cm2 and 1.0 Gy, respectively, in group 1 and 82.0 Gy×cm2 and 0.6 Gy in group 2 (P < .001, P < .001). For the neurointerventional procedure, the mean dose-area product and air kerma were 246.0 Gy×cm2 and 3.7 Gy, respectively, in group 1 and 169.8 Gy×cm2 and 3.3 Gy in group 2 (P < .001, P = .291). CONCLUSIONS With low-dose cerebral angiography, image quality was maintained, and implementation of dose-reduction strategies reduced radiation doses in patients undergoing diagnostic and neurointerventional procedures for intracranial aneurysms.
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Affiliation(s)
- J Choi
- From the Department of Radiology (J.C.), St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Gyeonggi-do, Republic of Korea
| | - B Kim
- Department of Radiology (B.K., Y.C., N.Y.S., J.J., H.S.C., S.L.J., K.J.A.), Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
| | - Y Choi
- Department of Radiology (B.K., Y.C., N.Y.S., J.J., H.S.C., S.L.J., K.J.A.), Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - N Y Shin
- Department of Radiology (B.K., Y.C., N.Y.S., J.J., H.S.C., S.L.J., K.J.A.), Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - J Jang
- Department of Radiology (B.K., Y.C., N.Y.S., J.J., H.S.C., S.L.J., K.J.A.), Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - H S Choi
- Department of Radiology (B.K., Y.C., N.Y.S., J.J., H.S.C., S.L.J., K.J.A.), Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - S L Jung
- Department of Radiology (B.K., Y.C., N.Y.S., J.J., H.S.C., S.L.J., K.J.A.), Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - K J Ahn
- Department of Radiology (B.K., Y.C., N.Y.S., J.J., H.S.C., S.L.J., K.J.A.), Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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46
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Moon GH, Kim HJ, Chae IS, Park SC, Kim BS, Jang J, Kim H, Kang YS. An artificial solid interphase with polymers of intrinsic microporosity for highly stable Li metal anodes. Chem Commun (Camb) 2019; 55:6313-6316. [PMID: 31089590 DOI: 10.1039/c9cc01329f] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Polymers of intrinsic microporosity (PIM-1) have an appropriate pore size to reduce the solvation number of Li ions in electrolytes. This unique pore structure of PIM-1 as a solid interphase can suppress transport of solvent and consequently unwanted chemical reactions at the interface of anodes, thereby extending the cycle life of Li metal anodes.
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Affiliation(s)
- Gi Hyeon Moon
- Department of Energy Engineering, Hanyang University, Seoul, 04763, Republic of Korea.
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47
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Jeong YJ, Yun DJ, Noh SH, Park CE, Jang J. Correction to Surface Modification of CdSe Quantum-Dot Floating Gates for Advancing Light-Erasable Organic Field-Effect Transistor Memories. ACS Nano 2018; 12:12945. [PMID: 30525430 DOI: 10.1021/acsnano.8b09242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
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48
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Jang J, Zeng Z, Shurson G, Urriola P. 166 Effect of gas production recording system and inoculum volume on in vitro fermentation of corn distillers dried grains with solubles (cDDGS) or soybean hulls using pig fecal inoculum. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- J Jang
- Department of Animal Science, University of Minnesota, Falcon Heights, MN, United States
| | - Z Zeng
- Department of Animal Science, University of Minnesota,Minneapolis, MN, United States
| | - G Shurson
- Department of Animal Science, University of Minnesota,Minneapolis, MN, United States
| | - P Urriola
- Department of Animal Science, University of Minnesota,Minneapolis, MN, United States
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49
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Zeng Z, Trudeau M, Li Q, Wang D, Jang J, Shurson G, Urriola P. 198 Effects of exogenous proteinases and carbohydrases on growth performance in pigs fed different grain-based diets: A meta-analysis. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.676] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Z Zeng
- Department of Animal Science, University of Minnesota,Minneapolis, MN, United States
| | - M Trudeau
- Department of Animal Science, University of Minnesota,Hastings, MN, United States
| | - Q Li
- Department of Animal Science, Iowa State University,Ames, IA, United States
| | - D Wang
- Department of Animal Science, University of Kentucky,Lexington, KY, United States
| | - J Jang
- Department of Animal Science, University of Minnesota, Falcon Heights, MN, United States
| | - G Shurson
- Department of Animal Science, University of Minnesota, Falcon Heights, MN, United States
| | - P Urriola
- Department of Animal Science, University of Minnesota, Falcon Heights, MN, United States
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50
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Xu T, Liu X, Liu Q, Han K, Liu Y, Jang J, Huang X, Zhao D, Bi K, Sun W, Li Y. Effect of experimental infections of various Tembusu virus strains isolated from geese, ducks and chickens on ducklings. Pol J Vet Sci 2018; 21:389-396. [PMID: 30450880 DOI: 10.24425/122613] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
In order to compare the pathogenicity of different Tembusu virus (TMUV) strains from geese, ducks and chickens, 56 5-day-old Cherry Valley ducklings which were divided into 7 groups and infected intramuscularly with 7´105 PFU/ml per duck of six challenge virus stocks. The clinical signs, weight gain, mortality, macroscopic and microscopic lesions, virus loads in sera of 1, 3, 5, 7, 11 and 14 dpi and serum antibody titers were examined. The results showed that these viruses could make the young ducks sick, but the clinical signs differed with the different species-original strains. All the experimental groups lose markedly in weight gain compared to the control, but there were no obvious distinctions in weight gains, as well as macroscopic and microscopic lesions of dead ducks between the infected groups. However, the groups of waterfowl-derived strains (from geese and ducks) showed more serious clinical signs and higher relative expressions of virus loads in sera than those from chicken-derived. The mortality of waterfowl groups was 37.5%, and the greatest mortality of chicken groups was 12.5%. The serum antibodies of the geese-species group JS804 appeared earlier and were higher in the titers than others. Taken toghter, the pathogenicity of waterfowl-derived TMUV was more serious than chicken-derived TMUV and JS804 could be chosen as one TMUV vaccine strain to protect from the infection.
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Affiliation(s)
- T Xu
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, National Center for Engineering Research on Veterinary Bio-products, Nanjing, Jiangsu Province, China.,Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - X Liu
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, National Center for Engineering Research on Veterinary Bio-products, Nanjing, Jiangsu Province, China.,Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - Q Liu
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, National Center for Engineering Research on Veterinary Bio-products, Nanjing, Jiangsu Province, China
| | - K Han
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, National Center for Engineering Research on Veterinary Bio-products, Nanjing, Jiangsu Province, China
| | - Y Liu
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, National Center for Engineering Research on Veterinary Bio-products, Nanjing, Jiangsu Province, China
| | - J Jang
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, National Center for Engineering Research on Veterinary Bio-products, Nanjing, Jiangsu Province, China
| | - X Huang
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, National Center for Engineering Research on Veterinary Bio-products, Nanjing, Jiangsu Province, China
| | - D Zhao
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, National Center for Engineering Research on Veterinary Bio-products, Nanjing, Jiangsu Province, China
| | - K Bi
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, National Center for Engineering Research on Veterinary Bio-products, Nanjing, Jiangsu Province, China
| | - W Sun
- Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - Y Li
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, National Center for Engineering Research on Veterinary Bio-products, Nanjing, Jiangsu Province, China
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