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SSRN 2025年

作者： Li, Jingyuan Du, Chengfei Wang, Yulei Du, Di Liang, Jinlong Shao, Nengqi Feng, Fanzhe Xu, Wenhao Xu, Yongqing Cui, Yi Center for Joint Surgery Intelligent Manufacturing and Rehabilitation Engineering Center The First Affiliated Hospital of Army Medical University Chongqing400038 China Chongqing Municipal Science and Technology Bureau Key Laboratory of Precision Medicine in Joint Surgery Chongqing400038 China Chongqing Municipal Education Commission Key Laboratory of Joint Biology Chongqing400038 China Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control School of mechanical engineering Tianjin University of Technology Tianjin300384 China Department of Orthopaedic Surgery 920th Hospital of Joint Logistics Support Force Kunming650032 China Department of Orthopaedic Surgery 920th Hospital of Joint Logistics Support Force No. 212 of Da-Guan Road Xishan District Kunming650032 China

ObjectiveThis study aimed to verify the biomechanical efficacy of a novel internal fixation system for repairing lumbar spondylolysis (LS). Additionally, the changes in the mechanical performance of the novel internal fixation device during compression were *** healthy 25-year-old male volunteer was recruited for lumbar spine CT data acquisition to construct and validate a nonlinear finite element model of the L4-S1 spinal segment (A). Based on this, models were established for L5 spondylolysis (B), traditional internal fixation (C), and the pressurization process of the novel LS repair device fixation (D→E→F). For these six models, we constrained the lower surface of the S1 vertebral body while applying an axial compression force of 500 N and a moment load of 7.5 N·m on the upper surface of the L4 vertebral body to simulate six motions of the lumbar spine. The performance of each finite element model was evaluated by comparing the range of motion (ROM), maximum displacement, and maximum pressure experienced by the lumbar spine under different motion *** with Model C, Models D, E, and F exhibited a reduced ROM and maximum displacement (1%-38.5%, 12.8%-63.6%, and 32.8%-80.2%) compared with Model C during six different motions. Notably, compared with Model C, the novel internal fixation models consistently demonstrated a decreasing trend in the maximum stress on the intervertebral discs (IVD) and an increasing trend in the maximum stress on the articular cartilage and maximum stress and displacement of the bone graft. Moreover, the novel internal fixation model displayed larger ranges of evenly distributed stresses on the isthmus and reduced maximum stress on the internal fixation device across all six motions, with improved stiffness effects during the pressurization process of the novel internal fixation system (D→E→F).ConclusionsAccording to several mechanical comparisons, the novel internal fixation system had better biomechan

关键词： Axial compression

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Kirigami-inspired Thermal Regulator

arXiv

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arXiv 2023年

作者： Ouyang, Hongyi Gu, Yuanqing Gao, Zhibin Hu, Lei Zhang, Zhen Ren, Jie Li, Baowen Sun, Jun Chen, Yan Ding, Xiangdong State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Xi'An710049 China Key Laboratory of Mechanism and Equipment Design of Ministry of Education Tianjin University Tianjin300350 China School of Mechanical Engineering Tianjin University Tianjin300350 China Center for Phononics and Thermal Energy Science China-EU Joint Center for Nanophononics Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology School of Physics Sciences and Engineering Tongji University Shanghai200092 China Department of Materials Science and Engineering Department of Physics Southern University of Science and Technology Shenzhen518055 China International Quantum Academy Shenzhen518048 China Paul M. Rady Department of Mechanical Engineering Department of Physics University of Colorado BoulderCO80305-0427 United States

One of the current challenges in nanoscience is tailoring phononic devices such as thermal regulators and thermal computing. This has long been a rather elusive task because the thermal switching ratio is not as high as electronic analogs. Mapping from a topological kirigami assembly, nitrogen-doped porous graphene (NPG) metamaterials on the nanoscale are inversely designed with a thermal switching ratio of 27.79 which is more than double the value of previous work. We trace this behavior to the chiral folding-unfolding deformation, resulting in a metal-insulator transition. This study provides a nano-material design paradigm to bridge the gap between kinematics and functional metamaterials that motivates the development of high-performance thermal regulators. Copyright © 2023, The Authors. All rights reserved.

关键词： Metamaterials

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Accelerating catalysts design by machine learning

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science Bulletin 2020年第19期65卷 1593-1594页

作者： Haishan Yu Jun Jiang Hefei National Laboratory for Physical Sciences at the Microscale CAS Key Laboratory of Mechanical Behavior and Design of MaterialsSchool of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefei 230026China

The climate crisis associated with rapid accumulation of carbon dioxide in atmosphere has posed increasing threat to human wellbeings[1].It is of great significance to capture and convert CO2 to realize sustainable utilization of carbon resources[1].The electrocatalytic CO2 reduction reaction(CO2RR)provides a sustainable,carbon-neutral method for solving this *** the difficulty of finding an efficient catalysts slows down the realization of the ambitious *** is mainly because it requires simultaneous optimization of selectivity for a specific product,energy conversion efficiency,current density and stability of the reaction system.

关键词： realization dioxide neutral

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Environmental impact analysis of biomass straw substituting coal in the rural building heating sector

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The science of the total environment 2025年 990卷 179890页

作者： Yizhou Jiang Yong Guo Yuanwei Ding Danrui Cui Kaiying Liu Zhigang Zhou Cun Wei School of Architecture and Design Harbin Institute of Technology Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology Ministry of Industry and Information Technology Harbin China. Shandong Yijiang Architectural Design Co. Ltd Jinan China. The University of Hong Kong Hong Kong China. Xi'an University of Architecture and Technology Xi'an China. School of Architecture and Chemical Engineering Heze Vocational College Heze China. School of Architecture and Design Harbin Institute of Technology Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology Ministry of Industry and Information Technology Harbin China. Electronic address: weicun8806@***.

Biomass energy is a clean and environmentally friendly renewable energy source, and the transition to biomass is driven by both environmental goals (carbon neutrality) and the feasibility based on biomass availability. This paper develops a new model to assess the feasibility of using biomass as a coal substitute for heating rural buildings. To assess the feasibility of this model, a case study was conducted in China's Heilongjiang province. We collected data on crop straw availability from 2005 to 2020 and analyzed coal consumption and carbon dioxide emissions in rural building heating from 2011 to 2020. Considering China's carbon neutral targets, we further assessed changes in coal consumption, biomass straw demand, carbon dioxide emissions, and pollutant emissions resulting from the adoption of biomass for heating in rural areas between 2021 and 2060. The findings reveal that coal consumption and carbon dioxide emissions displayed fluctuating patterns in the past decade, averaging around 550,000 tons and 1,050,000 tons, respectively. The use of biomass straw resulted in a gradual decline in carbon dioxide emissions, reaching near-zero levels, and also effectively reduced SO, NO and PM by 91.6 %, 49.3 % and 8.3 % respectively. The demand for biomass as an alternative to coal is up to 0.84 % of the currently available biomass, and there is enough biomass available. These findings emphasize the feasibility of biomass straw to achieve carbon neutrality in Heilongjiang Province and can guide policy makers, researchers and stakeholders in developing and implementing effective strategies for sustainable energy systems.

关键词： Biomass straw Carbon emission Heating Pollutant emissions Rural building

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Real-time simulation enabled navigation control of magnetic soft continuum robots in confined lumens

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Journal of the Mechanics and Physics of Solids 2025年 203卷

作者： Tong, Dezhong Hao, Zhuonan Li, Jiyu Sun, Boxi Liu, Mingchao Wang, Liu Huang, Weicheng CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Modern Mechanics University of Science and Technology of China Hefei230026 China Department of Material Science and Engineering University of Michigan Ann ArborMI48105 United States Department of Mechanical and Aerospace Engineering University of California Los AngelesCA90095 United States Department of Mechanical Engineering University of Birmingham BirminghamB15 2TT United Kingdom School of Engineering Newcastle University Newcastle upon Tyne NE1 7RU United Kingdom

Magnetic soft continuum robots (MSCRs) have emerged as a promising technology for minimally invasive interventions, offering enhanced dexterity and remote-controlled navigation in confined lumens. Unlike conventional guidewires with pre-shaped tips, MSCRs feature a magnetic tip that actively bends under applied magnetic fields. Despite extensive studies in modeling and simulation, achieving real-time navigation control of MSCRs in confined lumens remains a significant challenge. The primary reasons are due to robot–lumen contact interactions and computational limitations in modeling MSCR nonlinear behavior under magnetic actuation. Existing approaches, such as Finite Element Method (FEM) simulations and energy-minimization techniques, suffer from high computational costs and oversimplified contact interactions, making them impractical for real-world applications. In this work, we develop a real-time simulation and navigation control framework that integrates hard-magnetic elastic rod theory, formulated within the Discrete Differential Geometry (DDG) framework, with an order-reduced contact handling strategy. Our approach captures large deformations and complex interactions while maintaining computational efficiency. Next, the navigation control problem is formulated as an inverse design task, where optimal magnetic fields are computed in real time by minimizing the constrained forces and enhancing navigation accuracy. We validate the proposed framework through comprehensive numerical simulations and experimental studies, demonstrating its robustness, efficiency, and accuracy. The results show that our method significantly reduces computational costs while maintaining high-fidelity modeling, making it feasible for real-time deployment in clinical settings. Our work addresses key limitations in MSCR navigation control, paving the way for safer and more reliable clinical translation of MSCR technology for interventional surgeries. © 2025 The Authors

关键词： Magnetic variables control

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Development and verification of wireless torque sensor node for rotating shaft 4

Development and verification of wireless torque sensor node ...

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2020 4th International Workshop on Advanced Algorithms and Control Engineering, IWAACE 2020

作者： Wang, Dajian Wang, Zhinan Chen, Demin Li, Zhimin Yang, Sujun Marine Design and Research Institute of China 200011 China Beijing Beetech Inc 100085 China Science and Technology on Water Jet Propulsion Laboratory 200011 China Shanghai Key Laboratory of Ship Engineering 200011 China

There are many torque measurement technologies at present, because the rotating shafting torque monitoring is very important. However, compared with the cost-effective strain measurement technology, there are signal transmission and power supply technology bottlenecks in the long-term monitoring of large shafting torque. In view of these technical bottlenecks, this paper designs a strain torque monitoring system based on wireless signal transmission technology and wireless inductive power supply technology. In this paper, the current torque measurement technology is analyzed. The design principle and technical characteristics of wireless torque sensor and wireless induction power supply device are developed. This paper is a complete long-term monitoring solution for shafting torque, which has a good referent value for relevant engineers and technicians. © 2020 IOP Publishing Ltd. All rights reserved.

关键词： Torque measurement

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Corrigendum to First-principles study of the stability and mechanical properties for binary Mo-Re alloys [Physica B: Condens. Matter 693 (2024) 416401/PHYSB_416401]

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Physica B: Condensed Matter 2024年 695卷

作者： Qiang Gu Yuan Wang Engui Leng Yunhao Huang Na Jin Center for Rare Earth & Vanadium & Titanium Materials School of Materials Science & Engineering Sichuan University Chengdu 610065 China Science and Technology on Reactor Fuel and Materials Laboratory Nuclear Power Institute of China Chengdu China

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Determination of conifer age biomarker DAL1 interactome using Y2H-seq

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Forestry Research 2021年第1期1卷 106-117页

作者： Xi Chen Qianya Zhu Yumeng Nie Fangxu Han Yue Li Harry XWu Shihui Niu Beijing Advanced Innovation Center for Tree Breeding by Molecular Design National Engineering Laboratory for Tree BreedingCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBeijing 100083PR China Umea Plant Science Centre Department of Forest Genetics and Plant PhysiologySwedish University of Agricultural SciencesLinnaeus vag 6SE-90183UmeaSweden

Age is a sophisticated physiological signal that ensures the sequence of different developmental stages in *** regulation of ageing pathways appears to differ between gymnosperms and *** previously identified DAL1 as a conserved conifer age biomarker that plays a crucial role in the transition from vegetative to reproductive life-history phases in ***,elucidating the specific interaction events related to DAL1 is key to understanding how age drives conifer ***-scale yeast two-hybrid(Y2H)analysis followed by next-generation high-throughput sequencing(Y2H-seq)allowed us to identify 135 PtDAL1 interacting proteins in Pinus *** study found that PtDAL1 interacting proteins showed an ageing-related module,with sophisticated interacting networks composed of transcription factors(TFs),transcriptional regulators(TRs),and *** interacting proteins are produced in response to a variety of phytohormones and environmental signals,and are likely involved in wood formation,needle development,oleoresin terpenoids biosynthesis,and reproductive *** this study,we propose a novel regulation model of conifer ageing pathways whereby PtDAL1 coordinates different environmental stimuli and interacts with corresponding proteins to regulate appropriate development.

关键词： development likely DAL1

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Van der Waals imprinting of black-phosphorus-like binary alloyed monolayers with tunable band gaps and moiré superstructures

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Physical Review B 2022年第7期106卷 075431-075431页

作者： Ye-Heng Song Li-Ying Zhang Yun-Hui Wang Yutong Yang Yangyang Lv M. Usman Muzaffar Limei Wang Limin She Cui Ping Jia Yu Xue-Sen Wang Weifeng Zhang Zhenyu Zhang Center for Topological Functional Materials and Henan Key Laboratory of Photovoltaic Materials Henan University Kaifeng 475004 China International Center for Quantum Design of Functional Materials (ICQD) University of Science and Technology of China Hefei Anhui 230026 China National Laboratory of Solid State Microstructures and College of Engineering and Applied Sciences Nanjing University Nanjing 210093 China International Laboratory for Quantum Functional Materials of Henan Zhengzhou University Zhengzhou 450003 China Department of Physics National University of Singapore 2 Science Drive 3 Singapore 117542

Fabrication of isostructural isovalent alloys is a powerful approach to discovering novel materials with emergent properties. This approach has been well established in traditional bulk materials, yet remains to be fully exploited in two-dimensional systems. Here we use black- phosphorus (BP)-like group-VA binary alloyed monolayers on BP-like group IV-VI substrates to demonstrate the enabling power of isomorphism and isovalency in fabricating two-dimensional alloyed monolayers with tunable properties. We achieve the formation of nearly freestanding BP-like Sb1−xBix (0≤x≤1) monolayers on the GeSe substrate, with a semiconductor-to-metal transition and tunable moiré superstructures as x increases. In contrast, BP-like PbxBi1−x monolayers can be stabilized only for low Pb concentrations, and the contrasting behaviors are attributable to preservation or breakdown of isovalency in the two cases. This study establishes a generic approach to growing alloyed monolayers via van der Waals imprinting, opening a new avenue for materials discoveries with desirable functionalities.

关键词： 2-dimensional systems Monolayer films Van der Waals systems Molecular beam epitaxy Scanning tunneling spectroscopy

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In silico prediction of p K a values using explainable deep learning methods

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Journal of Pharmaceutical Analysis 2025年第6期15卷

作者： Chen Yang Changda Gong Zhixing Zhang Jiaojiao Fang Weihua Li Guixia Liu Yun Tang Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism Shanghai Key Laboratory of New Drug Design School of Pharmacy East China University of Science and Technology Shanghai 200237 China

Negative logarithm of the acid dissociation constant (p K a ) significantly influences the absorption, distribution, metabolism, excretion, and toxicity (ADMET) properties of molecules and is a crucial indicator in drug research. Given the rapid and accurate characteristics of computational methods, their role in predicting drug properties is increasingly important. Although many p K a prediction models currently exist, they often focus on enhancing model precision while neglecting interpretability. In this study, we present GraFp K a , a p K a prediction model using graph neural networks (GNNs) and molecular fingerprints. The results show that our acidic and basic models achieved mean absolute errors (MAEs) of 0.621 and 0.402, respectively, on the test set, demonstrating good predictive performance. Notably, to improve interpretability, GraFp K a also incorporates Integrated Gradients (IGs), providing a clearer visual description of the atoms significantly affecting the p K a values. The high reliability and interpretability of GraFp K a ensure accurate p K a predictions while also facilitating a deeper understanding of the relationship between molecular structure and p K a values, making it a valuable tool in the field of p K a prediction.

关键词： p K a Deep learning Graph neural networks AttentiveFP Integrated gradients In silico prediction

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