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Asymmetric α-benzylation of cyclic ketones enabled by concurrent chemical aldol condensation and biocatalytic reduction

Liu, Yunting (author), Ma, Teng (author), Guo, Zhongxu (author), Zhou, Liya (author), Liu, Guanhua (author), He, Ying (author), Ma, Li (author), Gao, Jing (author), Hollmann, F. (author)

Chemoenzymatic cascade catalysis has emerged as a revolutionary tool for streamlining traditional retrosynthetic disconnections, creating new possibilities for the asymmetric synthesis of valuable chiral compounds. Here we construct a one-pot concurrent chemoenzymatic cascade by integrating organobismuth-catalyzed aldol condensation with ene...

journal article 2024

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Hygrothermal effects on fatigue delamination behavior in composite laminates

Yao, Liaojun (author), Wang, Jiexiong (author), He, Yonglyu (author), Zhao, Xiuhui (author), Chen, Xiangming (author), Liu, J. (author), Guo, Licheng (author), Alderliesten, R.C. (author)

Fatigue delamination growth (FDG) is an important failure in composite structures during their long-term operations. Hygrothermal aging can have significant effects on interlaminar resistance. It is therefore really necessary to explore FDG behavior in composite laminates with hygrothermal aging. Dynamic mechanical thermal analysis (DMTA),...

journal article 2024

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Plastic particles affect N₂O release via altering core microbial metabolisms in constructed wetlands

Yang, X. (author), Chen, Yi (author), Liu, Tao (author), Zhang, Lu (author), Wang, Hui (author), Chen, Mengli (author), He, Qiang (author), Liu, G. (author), Ju, Feng (author)

Constructed wetlands (CWs) have been proven to effectively immobilize plastic particles. However, little is known about the differences in the impact of varying sized plastic particles on nitrous oxide (N₂O) release, as well as the intervention mechanisms in CWs. Here, we built a lab-scale wetland model and introduced plastic...

journal article 2024

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Aging and Sintered Layer Defect Detection of Discrete MOSFETs Using Frequency Domain Reflectometry Associated With Parasitic Resistance

Yun, Minghui (author), Yang, Daoguo (author), Cai, Miao (author), Yan, Haidong (author), Yu, Jiabing (author), Liu, Mengyuan (author), He, Siliang (author), Zhang, Kouchi (author)

Metal-oxide-semiconductor field-effect transistors (MOSFETs) undergo fatigue degradation under high thermal and electrical stresses. This process results in changes in their parasitic parameters, which can be detected using frequency domain reflectometry (FDR). Frequency domain impedance analysis is employed to characterize the various...

journal article 2024

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Recovering Power Grids Using Strategies Based on Network Metrics and Greedy Algorithms

Wang, F. (author), Cetinay, Hale (author), He, Zhidong (author), Liu, L. (author), Van Mieghem, P.F.A. (author), Kooij, Robert (author)

For this study, we investigated efficient strategies for the recovery of individual links in power grids governed by the direct current (DC) power flow model, under random link failures. Our primary objective was to explore the efficacy of recovering failed links based solely on topological network metrics. In total, we considered 13 recovery...

journal article 2023

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The contribution shift of ammonia-oxidizing archaea and bacteria to ammoxidation under Ag-NPs/SWCNTs/PS-NPs stressors in constructed wetlands

Yang, X. (author), Guo, Fucheng (author), Liu, Tao (author), He, Qiang (author), Vymazal, Jan (author), Chen, Yi (author)

Ammonia-oxidizing microorganisms (AOMs, archaea (AOA) and bacteria (AOB)) are primarily responsible for the ammoxidation in constructed wetlands (CWs). However, little is known about evaluating the response of AOA and AOB to engineered nanomaterials (ENMs) and quantifying the shift of their contribution to ammoxidation. Herein, we operated a...

journal article 2023

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Benchmarking Robustness and Generalization in Multi-Agent Systems: A Case Study on Neural MMO

Chen, Yangkun (author), Yu, Chenghui (author), Zhu, Hengman (author), Liu, Shuai (author), Zhang, Yibing (author), Suarez, Joseph (author), Zhao, Liang (author), He, J. (author), Chen, Jiaxin (author)

We present the results of the second Neural MMO challenge, hosted at IJCAI 2022, which received 1600+ submissions. This competition targets robustness and generalization in multi-agent systems: participants train teams of agents to complete a multi-task objective against opponents not seen during training. We summarize the competition design...

journal article 2023

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Analysis of Urban Built Environment Impacts on Outdoor Physical Activities: A Case Study in China

Li, Bo (author), Liu, Qiuhong (author), Wang, T. (author), He, He (author), Peng, You (author), Feng, Tao (author)

Outdoor physical activities can promote public health and they are largely influenced by the built environment in different urban settings. Understanding the association between outdoor physical activities and the built environment is important for promoting a high quality of life. Existing studies typically focus on one type of outdoor activity...

journal article 2022

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Research Progress on Convective Heat Transfer Characteristics of Supercritical Fluids in Curved Tube

Liu, Xinxin (author), Li, Shuoshuo (author), Liu, Liang (author), He, Chao (author), Sun, Zhuang (author), Özdemir, F. (author), Aziz, Muhammad (author), Kuo, Po-Chih (author)

Because of their compact structure, ease of processing and higher heat transfer coefficient, curved-tube heat exchangers are widely applied in various industry applications, such as nuclear power systems, solar-powered engineering, aircraft engine cooling systems and refrigeration and cryogenic systems. Accurate knowledge about the heat transfer...

journal article 2022

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Dynamic anti-collision A-star algorithm for multi-ship encounter situations

He, Zhibo (author), Liu, Chenguang (author), Chu, Xiumin (author), Negenborn, R.R. (author), Wu, Qing (author)

For the complex multi-ship encounter scenarios, this article proposes a dynamic collision avoidance path planning algorithm based on the A-star algorithm and ship navigation rules, namely Dynamic Anti-collision A-star (DAA-star) algorithm. A dynamic search mechanism of the DAA-star algorithm considering time factors is designed to enable the...

journal article 2022

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One-step controllable fabrication of 3D structured self-standing Al₃Ni₂/Ni electrode through molten salt electrolysis for efficient water splitting

Hua, Zhongsheng (author), Wu, Xiaobin (author), Zhu, Zengli (author), He, Jiwen (author), He, Shiwei (author), Liu, Huan (author), Xu, Liang (author), Yang, Y. (author), Zhao, Zhuo (author)

Exploring more efficient and low-cost electrocatalysts to replace platinum (Pt) is highly desired to promote the practical hydrogen production through water splitting. Herein, a facile and effective strategy is proposed to fabricate self-standing Al₃Ni₂/Ni electrode with controlled phase composition and surface...

journal article 2022

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Improved catalyst formulations for the conversion of glycerol to bio-based aromatics

He, Songbo (author), Kramer, Thomas Sjouke (author), Klein, Frederike Gerda Hiltje (author), Chandel, Anshu (author), Tegudeer, Zhuorigebatu (author), Heeres, Andre (author), Liu, C. (author), Pidko, E.A. (author), Heeres, Hero Jan (author)

The catalytic conversion of glycerol to aromatics (GTA, e.g., benzene, toluene, and xylenes, BTX) over a shaped H-ZSM-5/Al₂O₃ (60/40 wt%) catalyst was investigated in a continuous fixed-bed reactor to study the addition of the Al₂O₃ binder in the catalyst formulation on catalyst performance. The...

journal article 2022

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An inter-city energy migration framework for regional energy balance through daily commuting fuel-cell vehicles

He, Yingdong (author), Zhou, Yuekuan (author), Liu, Jia (author), Liu, Zhengxuan (author), Zhang, Guoqiang (author)

Spatiotemporal energy interaction and sharing are promising solutions to penetrate renewable energy, enhance grid power stability, and improve regional energy flexibility. However, the current literature is restrained in a small-scale neighborhood level, without considering inter-city energy migration through spatiotemporal complementarity...

journal article 2022

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Bilevel Model for Protection-Branch Measurements-Based Topology Attack Against DC and AC State Estimations

Gao, Shibin (author), He, Zonglun (author), Wei, Xiaoguang (author), Liu, Y. (author), Huang, Tao (author), Lei, Jieyu (author)

A topology attack, as a special class of false data injection attacks, tampers with topology information of a system to mislead the decision of the control center. This article conducts an in-depth study on topology attacks that aim to interfere with the judgment in topology information and pose potential damage by tampering with measurement...

journal article 2022

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Thickness-Independent Capacitive Performance of Holey Ti₃C₂T_x Film Prepared through a Mild Oxidation Strategy

Guo, R. (author), Yuan, Peng (author), Han, Xiying (author), He, Xuexia (author), Lu, Jiangbo (author), Li, Qi (author), Dang, Liqin (author), Sun, Jie (author), Liu, Zonghuai (author), Lei, Zhibin (author)

The Ti₃C₂T_x film with metallic conductivity and high pseudo-capacitance holds profound promise in flexible high-rate supercapacitors. However, the restacking of Ti₃C₂T_x sheets hinders ion access to thick film electrodes. Herein, a mild yet green route has been developed to...

journal article 2022

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A new reinforcement learning-based variable speed limit control approach to improve traffic efficiency against freeway jam waves

Han, Yu (author), Hegyi, A. (author), Zhang, Le (author), He, Zhengbing (author), Chung, Edward (author), Liu, Pan (author)

Conventional reinforcement learning (RL) models of variable speed limit (VSL) control systems (and traffic control systems in general) cannot be trained in real traffic process because new control actions are usually explored randomly, which may result in high costs (delays) due to exploration and learning. For this reason, existing RL-based...

journal article 2022

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The effect of the standing angle on reducing fatigue among prolonged standing workers

Liu, Zhihui (author), Wang, Li (author), Kong, Fanlei (author), Huang, Xia (author), Tang, Zhi (author), He, Shi (author), Vink, P. (author)

BACKGROUND: Many occupations require workers to stand for prolonged periods, which can cause discomfort, pain and even injures. Some supermarkets in life provide a foot pad for checkout staff to let them stand on it at work, thereby reducing standing fatigue caused by standing for a long time. The inclined platform is the same as the foot pad...

journal article 2021

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Catalytic conversion of pure glycerol over an un-modified H-ZSM-5 zeolite to bio-based aromatics

He, Songbo (author), Zuur, Kenny (author), Santosa, Dian Sukmayanda (author), Heeres, Andre (author), Liu, C. (author), Pidko, E.A. (author), Heeres, Hero Jan (author)

The catalytic conversion of pure glycerol to bio-aromatics (bio-BTX) over an un-modified H-ZSM-5 (SiO₂/Al₂O₃ molar ratio of 23) via an ex-situ catalytic pyrolysis approach in a continuous tandem-micro reactor at a scale of 1 g glycerol h⁻¹ was investigated. A BTX peak carbon yield of 28.1 ± 0.2 %...

journal article 2021

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Quantification on fuel cell degradation and techno-economic analysis of a hydrogen-based grid-interactive residential energy sharing network with fuel-cell-powered vehicles

He, Yingdong (author), Zhou, Yuekuan (author), Wang, Zhe (author), Liu, Jia (author), Liu, Zhengxuan (author), Zhang, Guoqiang (author)

Hydrogen-based (H₂-based) interactive energy networks for buildings and transportations provide novel solutions for carbon-neutrality transition, regional energy flexibility and independence on fossil fuel consumption, where vehicle fuel cells are key components for H₂-electricity conversion and clean power supply....

journal article 2021

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Catalytic conversion of glycerol to bio-based aromatics using H-ZSM-5 in combination with various binders

He, Songbo (author), Goldhoorn, Hero Reinder (author), Tegudeer, Zhuorigebatu (author), Chandel, Anshu (author), Heeres, Andre (author), Liu, C. (author), Pidko, E.A. (author), Heeres, Hero Jan (author)

The use of H-ZSM-5 with various binders (Al₂O₃, SiO₂, and kaolinite, 10 wt% on catalyst formulation) for the catalytic conversion of glycerol to bio-based aromatics (GTA) was investigated in a continuous bench-scale unit at a pyrolysis temperature of 450 °C, catalytic upgrading temperature of 500 °C, WHSV of...

journal article 2021