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Compressed Ru skin on atomic-ordered hexagonal Ru-Ni enabling rapid Volmer-Tafel kinetics for efficient alkaline hydrogen evolution

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CHEMICAL ENGINEERING JOURNAL 2024年 487卷

作者： Chen, xuwen Ye, Lifan Wu, Wei Chen, Suhao Wang, Zichen Zhu, Yu jiang, Haoran Chen, Runzhe Cheng, Niancai Fuzhou Univ Coll Mat Sci & Engn Fuzhou 350108 Peoples R China

Ru-based materials are promising electrocatalysts for hydrogen evolution reaction (HER) owing to their low-cost (one twenty-fifth of Pt) and similar Gibbs free energy of H* adsorption (AGH*) to that of Pt. However, the inadequate ability for the water dissociation of Ru catalysts is significantly impeding the water splitting efficiency. In this work, we demonstrate an atomically ordered hexagonal Ru-Ni alloy with compressive-strained Ru skin as a high-performance HER catalyst for significantly boosting the water dissociation. The Ordered Ru-Ni achieves an optimized catalytic activity for alkaline HER with a low overpotential of 23 mV at 10 mA cm-2, Tafel slope of 25.9 mV dec-1 and superior mass activity of 4.83 A mg-Ru1, which is 15.1 times higher than Ru/C. According to DFT calculations, the ordered RuNi core imposes homogeneous compressive strain on the Ru skin, resulting in an optimum binding energy towards H*/OH* intermediates on Ru active sites for rapid Tafel step kinetics. Moreover, the decreased H2O dissociation energy barrier of Ordered Ru-Ni suggests a promoted VolmerTafel kinetics is achieved, significantly boosting the overall HER efficiency. This work provides a practical avenue for surface strain engineering of Ru-based catalysts to promote the HER activity.

关键词： Compressive strain Ru shell Ru-Ni alloy Hydrogen evolution reaction Water dissociation

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Metal-Organic Frameworks-Derived Cobalt Catalyst Supported on Biochar for Efficient Deoxygenation of Stearic Acid

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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 2025年第4期64卷 2049-2060页

作者： Zhang, xuwen Dong, Xuexue Wang, Youting Bian, Juanjuan Ali, Sajid Cai, Dongren Sun, Kang Rao, Xiaoping jiang, Jianchun Zhan, Guowu Huaqiao Univ Acad Adv Carbon Convers Technol Coll Chem Engn Xiamen 361021 Fujian Peoples R China Huaqiao Univ Fujian Prov Key Lab Biomass Low Carbon Convers Xiamen 361021 Fujian Peoples R China Chinese Acad Forestry CAF Inst Chem Ind Forest Prod Nanjing 210042 Jiangsu Peoples R China

The conversion of stearic acid into linear hydrocarbons is a crucial step in advancing sustainable biofuels and biochemicals. Herein, we developed a series of cobalt-based catalysts (referred to as Co/C@TSC) using metal-organic frameworks (MOFs) as precursors and supporting them on biochar derived from natural tung shells (TSC). Tung shells, a byproduct of the tung oil extraction process, are widely available. The as-designed Co/C@TSC catalyst effectively deoxygenated stearic acid via decarbonylation/decarboxylation (DCO x ) processes, achieving a conversion of 78.5% and hydrocarbon product selectivity of 90%, specifically heptadecane and heptadecene. Our detailed analysis showed that the addition of biochar support improved the spatial distribution of cobalt species (with a high surface concentration of Co0) and enhanced the adsorption of reactants, thus boosting catalytic activity. Additionally, in situ DRIFTS analysis confirmed that the stearic acid deoxygenation process involved the intermolecular dehydration of stearic acid molecules. Experiments with different reaction substrates revealed that the stearic anhydride was a key reaction intermediate during the deoxygenation process. This study introduces a novel catalyst made from dual carbon-supported nonprecious metals, presenting a promising method for transforming stearic acid into valuable hydrocarbon products.

关键词： Reaction intermediates

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Size and Charge Dual-Switchable Nanoparticles for Achieving Chemosensitization and Immune Infiltration against Pancreatic Ductal Adenocarcinoma

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ADVANCED FUNCTIONAL MATERIALS 2025年第1期35卷

作者： Song, Haolin Chen, Hongyi Chen, Qinjun Fan, Hongrui Li, Chufeng Wang, Yu Zhang, Shilin Li, xuwen Su, Boyu Sun, Tao jiang, Chen Fudan Univ Sch Pharm Dept Pharmaceut Key Lab Smart Drug DeliveryMinist EducState Key Shanghai 201203 Peoples R China MOE Frontiers Ctr Brain Sci Shanghai 201203 Peoples R China Fujian Med Univ Affiliated Hosp 1 Natl Reg Med Ctr Dept Digest Dis Binhai Campus Fuzhou 350212 Peoples R China

Pancreatic ductal adenocarcinoma (PDAC), one of the most challenging cancers, is uniquely characterized by a biological barrier composed of multiple components in the extracellular matrix, preventing penetration of chemotherapeutic agents and hindering clinical drug treatment. Collagen I arrangement is critical. In this study, gemcitabine is chosen as the chemotherapeutic agent and dasatinib as the collagen-I-disrupting agent. When collagen I arrangement is disrupted, not only the chemotherapeutic drug enters the tumor area better, but the infiltration of CD8+ T cells into the tumor also increases. Therefore, a hypoxia-responsive linker-crosslinked polymer, DGD/L@GBI, is designed, which can be simultaneously loaded with two therapeutic agents, gemcitabine and dasatinib. The polymer is encapsulated by nucleic acid aptamers that target the PDAC stromal microenvironment and shield the surface. The aptamer is removed upon arrival at the PDAC hypoxic microenvironment, exposing the positively charged core to achieve charge reversal. Particle size transformation is achieved using linkers that respond to a hypoxic microenvironment. Increased intratumoral penetration is achieved using the dual transformation capabilities of the formulation. Pairing these two agents can result in a powerful efficacy in chemotherapy sensitization and immune infiltration.

关键词： charge reversal chemosensitization immune infiltration pancreatic ductal adenocarcinoma size reduction

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Research on sound source localization based on sound sensor 4

Research on sound source localization based on sound sensor

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4rth International Conference on Applied Mathematics, Modelling, and Intelligent Computing, CAMMIC 2024

作者： Jin, Hailei Wang, xuwen Huang, Kun Xiong, Xiaomin Zhang, Minshu Li, jiang Xinyu Power Supply Branch of State Grid jiangxi Power Co. Ltd. Xinyu338000 China Shanghai University of Electric Power Shanghai200090 China

ISBN: (纸本)9781510681637

Nowadays, most of the 10 kV distribution network cable lines are laid underground in the form of direct burial or casing, and the cable is cut off by the construction machinery, resulting in the accident of line tripping. In the construction of urban construction, third-party external forces such as manual excavation, mechanical excavation and illegal invasion will cause serious damage to underground cables. Therefore, it is of great engineering application value to develop cable marking piles with sound source localization function and find the location of damage points in time. In order to improve the accuracy and effectiveness of positioning, but also to achieve rapid positioning of the source of damage, this paper is based on the sound sensor, using its flexibility, efficiency and timeliness, by controlling the number and location of the sound sensor, combined with the sound intensity to locate the sound source. At the same time, the sound sensor is connected with the number and position of the marking pile, and the traditional cable marking pile is improved to accurately locate the damage source in time. © 2024 SPIE.

关键词： Excavation

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Some Explorations Based on the Application of BIM Technology in Housing Construction Project Management

Some Explorations Based on the Application of BIM Technology...

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2023 International Seminar on Computer Science and Engineering Technology, SCSET 2023

作者： Xu, Zhi Gao, Xingqu Tian, xuwen Guan, Hongliang jiang, Xiaohan Harbin Far Eastinstitute of Technology Harbin China Northeast Forestry University Engineering Consulting and Design Institute Harbin China

ISBN: (纸本)9798350301472

In recent years, the construction industry has gradually become an important industry in the development of national economy, and housing construction projects occupy a large proportion in the construction industry. Building construction projects have high requirements for the application of building information modeling (BIM), and the application of building information modeling technology assists housing construction project management to improve project management and make the model innovation of project management possible. The article analyzes the application of BIM technology in each stage of housing construction project management, discusses the selection and application of BIM technology, and proposes development measures, so as to provide some ideas for the application of BIM technology in housing construction project management. © 2023 IEEE.

关键词： Project management

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Deep Reinforcement Learning Home Energy Management Based Local Energy Trading in a Blockchain Platform 9

Deep Reinforcement Learning Home Energy Management Based Loc...

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9th Asia Conference on Power and Electrical Engineering, ACPEE 2024

作者： jiang, Yu Feng, Yingchun Fan, Jie Gao, Bo Wang, Yang Liu, xuwen Jiangsu Electric Power Trading Center State Grid Jiangsu Electric Power Co. LTD Nanjing China

ISBN: (纸本)9798350309638

Decentralized peer-to-peer Local Energy Markets (LEMs) are gaining popularity as local power production from Renewable Energy Sources (RESs) increases. The study investigates a blockchain-driven LEM in which prosumers and consumers buy and sell energy independently of the involvement of a third party. The suggested scheme involves Home Energy Management (HEM) and demurrage mechanisms that enable both consumers and prosumers to reduce their power prices and improve their power usage. The end-user can likewise move the load to off-peak periods and benefit from lower energy costs from the LEM through the approach. In this solution, HEM and demurrage mechanisms are used to optimize power usage as well as energy costs. As well as providing adequate power for the LEM, it is economically beneficial for end users and the community. The proposed system in the study utilizes the Deep Deterministic Policy Gradient (DDPG) algorithm and demurrage mechanisms to optimize electricity usage and energy costs. Meanwhile, smart contract on the Ethereum blockchain regulate and safeguard the electricity trading process. © 2024 IEEE.

关键词： Blockchain

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Metabolic Nanoregulators Induce Ferroptosis and Change Metabolite Flow to Reverse Immunosuppressive Tumor Microenvironment

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ACS NANO 2024年第51期18卷 34996-35012页

作者： Wang, Yu Chen, Qinjun Luo, Yifan Qu, Yangqi Li, xuwen Song, Haolin Li, Chufeng Zhang, Yiwen Sun, Tao jiang, Chen Fudan Univ Key Lab Smart Drug Delivery State Key Lab Med Neurobiol Dept PharmaceutSch PharmInst Brain SciMinist Ed Shanghai 201203 Peoples R China MOE Frontiers Ctr Brain Sci Shanghai 201203 Peoples R China Fujian Med Univ Affiliated Hosp 1 Natl Reg Med Ctr Dept Digest Dis Binhai Campus Fuzhou 350212 Peoples R China

Aberrant energy and substance metabolic pathways of tumor cells critically support tumor cell proliferation by hijacking the resources from nonmalignant cells, thereby establishing a metabolite flow favorable to tumor progression. This metabolic adaptation of tumor cells further modulates the immune landscape, ultimately creating a tumor microenvironment characterized by drug resistance and immunosuppression. The synergistic regulation of energy and substance metabolic pathways might be a good antitumor therapeutic paradigm. However, due to the metabolic convergence, it is crucial to selectively modulate the aberrant metabolism of tumor cells without compromising the functionality of other cells. Small-molecule drugs have the ability to target a wide range of biomolecules for antitumor therapy, but their application is limited by undesirable toxicities. Constructing nanodrug delivery systems can improve their properties and allow for the inclusion of multiple drugs, thereby exerting synergistic antitumor effects. In this study, we developed a two-drug codelivery system using drugs-conjugated multibranched polymers to modulate tumor cell metabolism by exploiting synthetic lethal pathways for safe and effective antitumor therapy. By delivery of adapalene and erastin simultaneously through nanoparticles, the material and energy metabolism of tumor cells can be regulated. This nanoparticle construction achieves tumor tissue targeting and responsive drug release, alters metabolite flow within tumor cells, and effectively kills tumor cells. Additionally, the nanoparticles can reverse the tumor immunosuppressive microenvironment, starting from single-cell regulation to whole-lesion control.

关键词： metabolic nanoregulators metabolite flow ferroptosis immunosuppression multibranched polymers

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作物种业领域研究生课程思政教育探索与研究——以青岛农业大学《研究生Seminar》为例

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中国种业 2021年第6期 52-55页

作者：江绪文李贺勤赵延明张海艳张玉梅孙群王建华青岛农业大学青岛266109 中国农业大学北京100193

中国种业要做大做强,人才培养是关键,研究生阶段正处在学生的世界观、人生观、价值观形成关键时期,亟需开展思政教育。基于作物种业领域《研究生Seminar》课程教学思政必要性及可行性分析,结合课程教学特点,围绕新时代高教目标,从课程... 详细信息

中国种业要做大做强,人才培养是关键,研究生阶段正处在学生的世界观、人生观、价值观形成关键时期,亟需开展思政教育。基于作物种业领域《研究生Seminar》课程教学思政必要性及可行性分析,结合课程教学特点,围绕新时代高教目标,从课程内容、教学方法和手段、教学考核等方面探索了课程思政的有机融合,为作物种业领域研究生课程教学水平不断提升提出一些建设性策略。

关键词：作物种业研究生课程思政教育

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Improved Eagle Perching Optimizer Based P2P Energy Trading for Smart Homes 9

Improved Eagle Perching Optimizer Based P2P Energy Trading f...

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9th Asia Conference on Power and Electrical Engineering, ACPEE 2024

作者： jiang, Yu Feng, Yingchun Fan, Jie Gao, Bo Wang, Yang Liu, xuwen State Grid Jiangsu Electric Power Co. LTD Jiangsu Electric Power Trading Center Nanjing China

ISBN: (纸本)9798350309638

The purpose of the study is to optimize power price in smart homes that connect to share energy. A Demand Side Management (DSM) system is used to coordinate P2P energy trading between smart homes using the improved eagle perching optimizer (IEPO). The IEPO algorithm produces optimum solutions for 99% of actual datasets, according to the outcomes. It is possible that consumer price distribution in the microgrid (MG) could be unequal as a result of P2P energy trading. The Pareto optimality principle addresses the issue of unequal price distribution, preventing households from being harmed by improving the costs of others. A final evaluation is performed on the effect of renewable energy and the penetration of storage within the MG. As the renewable energy and the penetration of storage increases, savings cannot necessarily be linear. As the saturation point approaches, they slowly begin to decline. © 2024 IEEE.

关键词： Demand side management

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玉米果种皮对其种子萌发及生理特性的影响

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种子 2021年第9期40卷 40-47页

作者：刘京朱凯丽岳海旺李贺勤张海艳赵延明杨然兵尚书旗江绪文青岛农业大学玉米研究所山东青岛266109 河北省农林科学院旱作农业研究所河北衡水053000

以郑单958、先玉335、蠡玉16和迪卡007等4个玉米品种种子为材料,通过对果种皮特性、发芽能力、幼苗生长、种子化学成分、酶活性等进行测定,研究果种皮对种子萌发及生理特性的影响。结果表明,果种皮最大吸水量、覆胚果种皮(TCE)穿刺力和... 详细信息

以郑单958、先玉335、蠡玉16和迪卡007等4个玉米品种种子为材料,通过对果种皮特性、发芽能力、幼苗生长、种子化学成分、酶活性等进行测定,研究果种皮对种子萌发及生理特性的影响。结果表明,果种皮最大吸水量、覆胚果种皮(TCE)穿刺力和TCE厚度等3项指标在4个品种间均存在差异,其中郑单958的3项指标均最大,分别为1.02g·(50粒)^(-1)、1.81 N和53.33μm;移除TCE后,4个品种种子的发芽指数、芽(苗)长、主根长、芽(苗)鲜重、芽(苗)干重、根鲜重和根干重等7项指标与对照相比均明显上升。此外,25℃条件下萌发60 h, 4个品种种子胚根鞘破裂率均明显提高,且胚中部、胚根和胚根鞘组织内过氧化氢酶、过氧化物酶、超氧化物歧化酶的活性基本呈上升趋势;不同种子质量指标相关性分析表明,TCE穿刺力和TCE厚度之间呈极显著正相关,该2项指标与发芽势、平均发芽天数、种子总淀粉含量3项指标均呈正相关,但与芽(苗)长、主根长、芽(苗)鲜重、芽(苗)干重、根鲜重、根干重和种子粗脂肪含量等7项指标均呈负相关。研究表明,玉米果种皮特别是TCE相关生物力特性会影响种子萌发及生理特性,这可为进一步研究玉米种子萌发调控及高活力形成机理提供理论基础。

关键词：玉米种子萌发种子活力果种皮生物力

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