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8. Surface Activation by Single Ru Atoms for Enhanced High‐Temperature CO2 Electrolysis

Author

Song, Yuefeng, primary, Min, Junyong, additional, Guo, Yige, additional, Li, Rongtan, additional, Zou, Geng, additional, Li, Mingrun, additional, Zang, Yipeng, additional, Feng, Weicheng, additional, Yao, Xiaoqian, additional, Liu, Tianfu, additional, Zhang, Xiaomin, additional, Yu, Jingcheng, additional, Liu, Qingxue, additional, Zhang, Peng, additional, Yu, Runsheng, additional, Cao, Xingzhong, additional, Zhu, Junfa, additional, Dong, Kun, additional, Wang, Guoxiong, additional, and Bao, Xinhe, additional

Published
2023
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10. In situexsolved CoFe alloy nanoparticles for stable anodic methane reforming in solid oxide electrolysis cells

Author

Guo, Yige, Wang, Shuo, Li, Rongtan, Yu, Jingcheng, Zhang, Xiaomin, Li, Mingrun, Zheng, Xusheng, Zhu, Junfa, Song, Yuefeng, Wang, Guoxiong, and Bao, Xinhe

Abstract

Replacing the sluggish oxygen evolution reaction with a favorable methane (CH4) reforming reaction at the anode of solid oxide electrolysis cells (SOECs) can greatly reduce the electrical demand for CO2electroreduction at the cathode. However, the perovskite anode always displays limited activity and stability for CH4reforming. Herein, through fine-tuning of the average exsolution energy of the B-site components, high-density CoFe alloy nanoparticles are exsolved on the surface of La0.6Sr0.4Ti0.3Fe0.5Co0.2O3-δ(LSTFC2) anode after reduction, which shows superior anodic CH4reforming performance, with a CH4conversion of 86.9% and CO selectivity of 90.1% at 800°C. Moreover, stable operation over 1,250 h with a CO selectivity above 95% is achieved. The electrical energy consumption for CO production decreases from 3.46 kWh m−3for conventional SOECs to 0.31 kWh m−3for CH4-assisted SOECs. This work provides an efficient strategy to thermodynamically boost the cathodic CO2electroreduction performance and simultaneously convert CH4to syngas at the anode.

Published
2024
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13. Surface Activation by Single Ru Atoms for Enhanced High‐Temperature CO2 Electrolysis.

Author

Song, Yuefeng, Min, Junyong, Guo, Yige, Li, Rongtan, Zou, Geng, Li, Mingrun, Zang, Yipeng, Feng, Weicheng, Yao, Xiaoqian, Liu, Tianfu, Zhang, Xiaomin, Yu, Jingcheng, Liu, Qingxue, Zhang, Peng, Yu, Runsheng, Cao, Xingzhong, Zhu, Junfa, Dong, Kun, Wang, Guoxiong, and Bao, Xinhe

Subjects
ATOMS, ELECTRONIC structure, CARBON dioxide, SURFACE structure, RUTHENIUM
Abstract

Cathodic CO2 adsorption and activation is essential for high‐temperature CO2 electrolysis in solid oxide electrolysis cells (SOECs). However, the component of oxygen ionic conductor in the cathode displays limited electrocatalytic activity. Herein, stable single Ruthenium (Ru) atoms are anchored on the surface of oxygen ionic conductor (Ce0.8Sm0.2O2‐δ, SDC) via the strong covalent metal‐support interaction, which evidently modifies the electronic structure of SDC surface for favorable oxygen vacancy formation and enhanced CO2 adsorption and activation, finally evoking the electrocatalytic activity of SDC for high‐temperature CO2 electrolysis. Experimentally, SOEC with the Ru1/SDC‐La0.6Sr0.4Co0.2Fe0.8O3‐δ cathode exhibits a current density as high as 2.39 A cm−2 at 1.6 V and 800 °C. This work expands the application of single atom catalyst to the high‐temperature electrocatalytic reaction in SOEC and provides an efficient strategy to tailor the electronic structure and electrocatalytic activity of SOEC cathode at the atomic scale. [ABSTRACT FROM AUTHOR]

Published
2024
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17. Supplementary Figure from DNA-PK Inhibitor Peposertib Amplifies Radiation-Induced Inflammatory Micronucleation and Enhances TGFβ/PD-L1 Targeted Cancer Immunotherapy

Author

Carr, Michael I., primary, Chiu, Li-Ya, primary, Guo, Yige, primary, Xu, Chunxiao, primary, Lazorchak, Adam S., primary, Yu, Huakui, primary, Qin, Guozhong, primary, Qi, Jin, primary, Marelli, Bo, primary, Lan, Yan, primary, Sun, Qing, primary, Czauderna, Frank, primary, Zenke, Frank T., primary, Blaukat, Andree, primary, and Vassilev, Lyubomir T., primary

Published
2023
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18. Supplementary Figure 1 from Aurora A Kinase Inhibition Selectively Synergizes with Histone Deacetylase Inhibitor through Cytokinesis Failure in T-cell Lymphoma

Author

Zullo, Kelly M., primary, Guo, Yige, primary, Cooke, Laurence, primary, Jirau-Serrano, Xavier, primary, Mangone, Michael, primary, Scotto, Luigi, primary, Amengual, Jennifer E., primary, Mao, Yinghui, primary, Nandakumar, Renu, primary, Cremers, Serge, primary, Duong, Jimmy, primary, Mahadevan, Daruka, primary, and O'Connor, Owen A., primary

Published
2023
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19. Video 1 from Aurora A Kinase Inhibition Selectively Synergizes with Histone Deacetylase Inhibitor through Cytokinesis Failure in T-cell Lymphoma

Author

Zullo, Kelly M., primary, Guo, Yige, primary, Cooke, Laurence, primary, Jirau-Serrano, Xavier, primary, Mangone, Michael, primary, Scotto, Luigi, primary, Amengual, Jennifer E., primary, Mao, Yinghui, primary, Nandakumar, Renu, primary, Cremers, Serge, primary, Duong, Jimmy, primary, Mahadevan, Daruka, primary, and O'Connor, Owen A., primary

Published
2023
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24. DNA-PK Inhibitor Peposertib Amplifies Radiation-Induced Inflammatory Micronucleation and Enhances TGFβ/PD-L1 Targeted Cancer Immunotherapy

Author

Carr, Michael I., primary, Chiu, Li-Ya, additional, Guo, Yige, additional, Xu, Chunxiao, additional, Lazorchak, Adam S., additional, Yu, Huakui, additional, Qin, Guozhong, additional, Qi, Jin, additional, Marelli, Bo, additional, Lan, Yan, additional, Sun, Qing, additional, Czauderna, Frank, additional, Zenke, Frank T., additional, Blaukat, Andree, additional, and Vassilev, Lyubomir T., additional

Published
2022
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26. Measurement and Evaluation of the Operating Efficiency of China’s Basic Pension Insurance: Based on Three-Stage DEA Model

Author

Li,Zhiguang, Si,Xu, Ding,Zhiyuan, Li,Xiao, Zheng,Shuai, Wang,Yuxin, Wei,Hua, Guo,Yige, Zhang,Wei, Li,Zhiguang, Si,Xu, Ding,Zhiyuan, Li,Xiao, Zheng,Shuai, Wang,Yuxin, Wei,Hua, Guo,Yige, and Zhang,Wei

Abstract

Zhiguang Li,1 Xu Si,1 Zhiyuan Ding,1 Xiao Li,1 Shuai Zheng,1 Yuxin Wang,1 Hua Wei,1 Yige Guo,2 Wei Zhang3 1School of Economics and Management, Anhui University of Chinese Medicine, Hefei, Anhui, People’s Republic of China; 2King’s Business School, King’s College London, London, UK; 3School of Information Engineering, Anhui University of Chinese Medicine, Hefei, Anhui, People’s Republic of ChinaCorrespondence: Hua WeiSchool of Economics and Management, Anhui University of Chinese Medicine, Hefei, Anhui, People’s Republic of ChinaTel +86 551-68129006Email weihua@ahtcm.edu.cnWei ZhangSchool of Information Engineering, Anhui University of Chinese Medicine, Hefei, Anhui, People’s Republic of ChinaTel +86 551-68129224Email zhangwei900316@163.comPurpose: This paper aims to measure the operating efficiency of China’s basic pension insurance from 2014 to 2019 in 31 provinces.Methods: The three-stage DEA model was used to evaluate the operating efficiency of basic pension insurance in 31 provinces.Results: On the whole, the operating efficiency of China’s basic pension insurance was at a high level, but there was still room for improvement. GDP, urbanization level and scale of government public expenditure had a positive impact on the operating efficiency of regional basic pension insurance. In contrast, the old-age dependency ratio had a significant negative effect. There were noticeable regional differences in the operating efficiency of China’s basic pension insurance, which showed a pattern of Central (0.742) >Eastern (0.689) >Western (0.505) after removing the influence of environmental variables.Conclusion: This study systematically analyzes the impact of external environmental regulations on China’s basic pension insurance’s operating efficiency and provides decision-making references for further improving the operating efficiency of China’s basic pension insurance. In order to further optimize the allocation of basic endowment insurance

Published
2021

27. Configuration Analysis of Influencing Factors of Technical Efficiency Based on DEA and fsQCA: Evidence from China’s Medical and Health Institutions

Author

Li,Zhiguang, Zhang,Wanying, Kong,Aijie, Ding,Zhiyuan, Wei,Hua, Guo,Yige, Li,Zhiguang, Zhang,Wanying, Kong,Aijie, Ding,Zhiyuan, Wei,Hua, and Guo,Yige

Abstract

Zhiguang Li,1 Wanying Zhang,1 Aijie Kong,1 Zhiyuan Ding,1 Hua Wei,1 Yige Guo2 1School of Economics and Management, Anhui University of Chinese Medicine, Hefei, Anhui, People’s Republic of China; 2King’s Business School, King’s College London, London, UKCorrespondence: Hua WeiSchool of Economics and Management, Anhui University of Chinese Medicine, 350 Longzihu Road, Xinzhan District, Hefei 230012, People’s Republic of ChinaTel +86-551-68129224Email weihua@ahtcm.edu.cnPurpose: This paper aims to measure the technical efficiency of China’s medical and health institutions from 2012 to 2017 and outline the path to achieve high-quality development.Methods: The DEA-Malmquist was used to evaluate the total factor productivity of medical and health institutions in 31 provinces. A fuzzy set Qualitative Comparative Analysis (fsQCA) was used for configuration analysis of determinants affecting technical efficiency.Results: The average total factor productivity (TFP) of those institutions was 0.965, namely TFP declined averagely by 3.5% annually. The efficiency change and the technical change were 0.998 and 0.967, respectively. The realization paths of high technical efficiency are composed of high fatality rate and high financial allocation-led, high population density and high GDP-led. Low dependency ratio and low financial allocation-led, low fatality rate and low financial allocation-led are the main reasons for low technical efficiency.Conclusion: Due to advanced medical technology and economic development, major cities like Beijing, Shanghai, and Guangdong have attracted a large number of high-level health personnel, achieving long-term and stable health business growth. Hubei, Anhui, and Sichuan also have made rapid development of health care through appropriate financial subsidies and policy supports. The technical changes in Qinghai, Yunnan, and Inner Mongolia are higher than the national average, but the operation and

Published
2021

28. Fabrication of the magnetic mesoporous silica Fe-MCM-41-A as efficient adsorbent: performance, kinetics and mechanism

Author

Bin Chen, Ying Zhao, Guo Yige, and Tianxue Yang

Subjects
Multidisciplinary, Aqueous solution, Nanoscale materials, Pollution remediation, Chemistry, Precipitation (chemistry), Science, Kinetics, 02 engineering and technology, 010501 environmental sciences, Mesoporous silica, 021001 nanoscience & nanotechnology, 01 natural sciences, Article, Nanomaterials, Adsorption, MCM-41, Chemical engineering, Mass transfer, Medicine, 0210 nano-technology, 0105 earth and related environmental sciences
Abstract

Antibiotics are emerging pollutants and increasingly present in aquaculture and industrial wastewater. Due to their impact on the environment and health, their removal has recently become a significant concern. In this investigation, we synthesized nano zero-valent iron-loaded magnetic mesoporous silica (Fe-MCM-41-A) via precipitation and applied the adsorption of oxytetracycline (OTC) from an aqueous solution. The effects of competing ions such as Na+, Ca2+ and Cu2+ on the adsorption process under different pH conditions were studied in depth to providing a theoretical basis for the application of nanomaterials. The characterization of the obtained material through transmission electron microscopy demonstrates that the adsorbent possesses hexagonal channels, which facilitate mass transfer during adsorption. The loaded zero-valent iron made the magnetic, and was thus separated under an applied magnetic field. The adsorption of OTC onto Fe-MCM-41-A is rapid and obeys the pseudo-second-order kinetic model, and the maximum adsorption capacity of OTC is 625.90 mg g−1. The reaction between OTC and Fe-MCM-41-A was inner complexation and was less affected by the Na+. The effect of Ca2+ on the adsorption was small under acidic and neutral conditions. However, the promotion effect of Ca2+ increased by the increase of pH. Cu2+ decreased the removal efficiencies continuously and the inhibitory effects decrease varied with the increase of pH. We propose that surface complexing, ion-exchange, cationic π-bonding, hydrogen bonding, and hydrophobicity are responsible for the adsorption of OTC onto Fe-MCM-41-A.

Published
2020

43. Atomically Dispersed Ru Species Induced by Strong Metal–Support Interaction for Electrochemical Methane Reforming

Author

Song, Yuefeng, Liu, Tianfu, Feng, Weicheng, Li, Rongtan, Guo, Yige, Li, Mingrun, Jiang, Luozhen, Matsumoto, Hiroaki, Zeng, Chaobin, Zhang, Xiaomin, Zou, Geng, Liu, Qingxue, Lv, Houfu, Yu, Jingcheng, Liu, Meilin, Wang, Guoxiong, and Bao, Xinhe

Abstract

During the high-temperature oxygen evolution reaction for CO2electrolysis in solid oxide electrolysis cells (SOECs), the key elementary process of O2–transfer is restricted by the high anodic oxygen pressure thermodynamically, thus requiring a high external voltage [open-circuit voltage (OCV)] to drive the electrolysis reaction. Herein, electrochemical CH4reforming is introduced to the SOEC anode, which remarkably lowers the anodic oxygen pressure and OCV, finally reducing the energy demand from 3.12 to 0.11 kW h per cubic meter of CO. Meanwhile, atomically dispersed Ru species is anchored on the anode surface due to the strong metal–support interaction, which exhibits superior CH4reforming activity (90% of CO selectivity) and stability (300 h) to the infiltrated Ru nanoparticles and doped Ru species in the bulk lattice at 600 °C. This work proposes an efficient strategy to boost the SOEC performance thermodynamically and produce value-added chemicals at both the cathode and anode of SOEC simultaneously.

Published
2024
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46. Molecular Mechanisms of Mitotic Spindle Assembly and Accurate Chromosome Segregation

Author

Guo, Yige

Subjects
Cytology
Abstract

During the cell cycle, duplicated DNA in S phase is segregated, in the form of chromatids, into two daughter cells in mitosis. The accuracy of chromosome segregation is essential as two daughter cells have the same genetic contents as the mother cell. Two major mechanisms are utilized by the cell to ensure accurate chromosome segregation. First, interactions between the dynamic microtubules and kinetochores, the proteinaceous structures built on centromeres of mitotic chromosomes that act as the attachment site for microtubules, serve as major forces to position each pair of chromosomes to the metaphase plate. Secondly, a surveillance system, known as the mitotic checkpoint, put the anaphase onset on hold until each pair of sister chromosomes are aligned at the metaphase plate and appropriately attached with microtubule plus ends by kinetochores. In the first part (Chapter 2) of this thesis, I illustrate the role of the auto-phosphorylation of BubR1, a mitotic checkpoint protein, in kinetochore-microtubule attachment and the mitotic checkpoint. Using a phospho-specific antibody against the auto-phosphorylation site identified by mass spectrometry, I demonstrate that kinetochore-associated BubR1 phosphorylates itself in human cells in vivo and that this phosphorylation is dependent on its binding partner, the kinetochore-associated kinesin motor CENP-E. Studies using cells expressing a non-phosphorylatable BubR1 mutant revealed that the CENP-E-dependent BubR1 phosphorylation at unattached kinetochores is important for a full-strength mitotic checkpoint to prevent single chromosome loss. Furthermore, replacing endogenous BubR1 with the non-phosphorylatable BubR1 mutant or depletion of CENP-E, the BubR1 kinase activator, results in metaphase chromosome misalignment and increased incidents of syntelic attachments. Using indirect immunofluorescence, I have discovered a decreased level of Aurora B-mediated Ndc80 phosphorylation at the kinetochore of cells expressing the non-phosphorylatable BubR1 mutant, which might contribute to the alignment defect. Moreover, expressing a phosphomimetic BubR1 mutant substantially reduces the incidence of polar chromosomes in CENP-E-depleted cells, further supporting a signaling cascade function of CENP-E and BubR1 on the kinetochore. Thus, the state of CENP-E-dependent BubR1 auto-phosphorylation in response to spindle microtubule capture by CENP-E is important for kinetochore functions in achieving accurate chromosome segregation. In the second part (Chapter 3), my colleague and I demonstrate a novel mechanism of mitotic spindle assembly in Xenopus egg extracts and mammalian cells. I show that the MRN (Mre11, Rad50, and Nbs1) complex is required for metaphase chromosome alignment. Consistent with the result of my colleague using Xenopus egg extracts, disruption of MRN function by depleting Mre11 using an inducible shRNA system, or Mre11 inhibitor mirin, triggers a metaphase delay and disrupts the RCC1-dependent Ran-GTP gradient. Addition of mirin to mammalian cells reduces RCC1 association with mitotic chromosomes and changes the confirmation of RCC1. Thus, the MRN-CtIP pathway contributes to Ran-dependent mitotic spindle assembly by modulating RCC1 chromosome association. In summary, my novel findings have revealed a pair of molecular mechanisms not known previously, which are important to the mitosis field.

Published
2013
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47. Estimation of forest aboveground biomass from HJ1B imagery using a canopy reflectance model and a forest growth model.

Author

Wang, Xinyun, Guo, Yige, He, Jie, Du, Lingtong, and Hu, Tianhua

Subjects
*FOREST biomass, *FOREST canopies, *PARAMETER estimation, *STOCHASTIC processes, *CARBON cycle
Abstract

Accurately estimating the spatial distribution of forest aboveground biomass (AGB) is important because of its carbon budget forms part of the global carbon cycle. This paper presented three methods for obtaining forest AGB based on a forest growth model, a Multiple-Forward-Mode (MFM) method and a stochastic gradient boosting (SGB) model. A Li-Strahler geometric-optical canopy reflectance model (GOMS) with the ZELIG forest growth model was run using HJ1B imagery to derive forest AGB. GOMS-ZELIG simulated data were used to train the SGB model and AGB estimation. The GOMS-ZELIG AGB estimation was evaluated for 24 field-measured data and compared against the GOMS-SGB model and GOMS-MFM biomass predictions from multispectral HJ1B data. The results show that the estimation accuracy of the GOMS-MFM model is slightly higher than that of the GOMS-SGB model. The GOMS-ZELIG and GOMS-MFM models are considerably more accurate at estimating forest AGB in arid and semiarid regions. [ABSTRACT FROM PUBLISHER]

Published
2018
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48. Aurora A Kinase Inhibition Selectively Synergizes with Histone Deacetylase Inhibitor through Cytokinesis Failure in T-cell Lymphoma

Author

Zullo, Kelly M., primary, Guo, Yige, additional, Cooke, Laurence, additional, Jirau-Serrano, Xavier, additional, Mangone, Michael, additional, Scotto, Luigi, additional, Amengual, Jennifer E., additional, Mao, Yinghui, additional, Nandakumar, Renu, additional, Cremers, Serge, additional, Duong, Jimmy, additional, Mahadevan, Daruka, additional, and O'Connor, Owen A., additional

Published
2015
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