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Deformability,inherent mechanical properties and chemical bonding of Al11Nd3 in Al-Nd target material

材料科学技术（英文版） 2025年第11期214卷 278-291页

作者： Xue-Qian Wang Run-Xin Song Dong Wang Xu Guan Shuan Li Shuchen Sun Hongbo Yang Xiangjie Wang Daogao Wu Ganfeng Tu Song Li Hai-Le Yan Liang Zuo Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education) School of Material Science and EngineeringNortheastern UniversityShenyang 110819China College of Mechanical Engineering Zhijiang College of Zhejiang University of TechnologyShaoxing 312030China National Engineering Research Center for Rare Earth GRIREM Advanced Materials Co.Ltd.Beijing 100088China School of Metallurgy Northeastern UniversityShenyang 110819China Key Laboratory of Electromagnetic Processing of Materials Ministry of EducationNortheastern UniversityShenyang 110819China

Microstructure uniformity of the Al-Nd target materials with Al11Nd3 significantly affects the performance of the fabricated Al-Nd film,which is widely used as wiring material in large-size thin-film transistor liquid crystal display(TFT-LCD)*** the inherent mechanical properties and chemical bonds of Al11Nd3 is crucial for homogenizing the Al-Nd ***,by a combined experimental and ab-initio theoretical study,the microstructure and deformability of the Al-3wt％Nd alloy and the inherent mechanical properties and chemical bonds of Al11Nd3 were investigated *** Al-3wt％Nd alloy is composed of the pre-eutectic α-Al matrix and the eutectic α-Al and a high stable α-Al11Nd3 *** the plastic deformation,the eutectic microstructure transforms from a cellular to a lamel-lar shape,while the morphology and dimension of α-Al11Nd3 are not changed *** examin-ing ideal tensile strength,elastic moduli,hardness and brittleness-ductility,the hardness-brittleness ofα-Al11Nd3 is quantitatively evaluated,accounting for its difficulties of plastic deformation and *** band structure,population analysis,topological analysis and crystal orbital Hamilton population,we found that α-Al11Nd3 possesses two types of chemical bonds:the Nd-Al and Al-Al *** former is a typical ionic bond with electron transfer from Nd to Al,while the latter,dominated by both 3s-3p and 3p-3p interactions,is a weak covalent *** mixed chemical bond is responsible for the high hardness-brittleness of α-*** work is expected to lay a foundation for Al-Nd alloy and catalyze the fabrication of high-quality Al-Nd target materials.

关键词： TFT-LCD Al-Nd Al11Nd3 Target material First-principles calculation

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A C-type lectin with dual carbohydrate recognition domains functions in innate immune response in Asian corn borer,Ostrinia furnacalis

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Insect Science 2025年第1期32卷 172-192页

作者： Er-Tao Li Jia-Yue Ji Wei-Jie Kong Dong-Xu Shen Cai Li Chun-Ju An Deparment of Entomology College of Plant ProtectionChina Agricultural UniversityBejingChina Pomology Institute Shanxi Agricultural UniversityJinzhongShanxi ProvinceChina Jiangsu Key Laboratory of Sericultural Biology and Biotechnology School of BiotechnologyJiangsu University of Science and TechnologyZhenjiangJiangsu ProvinceChina

C-type lectins(CTLs)act as pattern recognition receptors(PRRs)to initiate the innate immune response in insects.A CTL with dual carbohydrate recognition domains(CRDs)(named immulectin-4[IML-4])was selected from the Ostrinia furnacalis transcriptome dataset for functional *** cloned the full-length complementary DNA of *** IML-4(OfIML-4).It encodes a 328-residue protein with a Glu-Pro-Asn(EPN)and Gln-Pro-Asp(QPD)motifs in 2 CRDs,***-4 messenger RNA levels increased significantly upon the bacterial and fungal *** OfIML-4(rIML-4)and its individual CRDs(rCRD1 and rCRD2)exhibited the binding ability to various microorganisms including Escherichia coli,Micrococcus luteus,Pichia pastoris,and Beauveria bassiana,and the cell wall components including lipopolysaccharide from ***,peptidoglycan from *** or Bacillus subtilis,and curdlan from Alcaligenes *** binding further induced the agglutination of ***,***,and *** in the presence of calcium,the phagocytosis of Staphylococcus aureus by the hemocytes,in vitro encapsulation and melanization of nickel-nitrilotriacetic acid beads,and a significant increase in phenoloxidase activity of *** addition,rIML-4 significantly enhanced the phagocytosis,nodulation,and resistance of *** to *** together,our results suggest that OfIML-4 potentially works as a PRR to recognize the invading microorganisms,and functions in the innate immune response in ***.

关键词： cellular immunity C-type lectin humoral immunity immulectin Ostrinia furnacalis pattern recognition receptor(PRR)

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A Summary of Smelting and Secondary Recovery Process of Antimony

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JOM 2025年第4期77卷 2666-2683页

作者： Liang, Kai Ma, Baozhong An, Yarui Zhang, Yang Chen, Yongqiang Wang, Chengyan Univ Sci & Technol Beijing State Key Lab Adv Met Beijing 100083 Peoples R China Univ Sci & Technol Beijing Sch Met & Ecol Engn Beijing 100083 Peoples R China

Antimony is a critical and strategic metal resource due to its excellent electrical conductivity and stability at room temperature, which makes it highly versatile in both industrial and everyday applications. To maintain sustainable antimony usage, it is essential to optimize antimony extraction efficiency from ore and secondary sources because of limited antimony resources and poor antimony recovery levels. The primary raw material for antimony extraction is introduced in this study as antimony pyroxene. Apart from conventional methods like pyrometallurgy and wet metallurgy, some novel techniques, including ozone leaching, microwave roasting, and biological leaching, have also been suggested. Several technological concepts, benefits, and drawbacks have all been examined in this study, and innovative ideas and references for the extraction and recovery of antimony metal have been supplied. To improve the extraction of antimony metal, this literature review concludes by summarizing the current status of antimony smelting and offering suggestions for the next innovations and difficulties.

关键词： Pyrometallurgy

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The human-derived novel gut commensal Luoshenia tenuis regulates body weight and food intake in mice

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Food Science and Human Wellness 2024年第2期13卷 830-841页

作者： Yu Jiang Mengxuan Du Lisheng Xie Minzhi Jiang Yaokun Zhang Mingxia Bi Chang Liu Hongwei Liu Shuangjiang Liu State Key Laboratory of Microbial Technology Shandong UniversityQingdao 266237China State Key Laboratory of Microbial Resources Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China College of Life Science Hebei UniversityBaoding 071000China State Key Laboratory of Mycology Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China

Many studies have revealed that gut microbes modulate host *** this study,we characterized the therapeutic effects of a novel gut commensal Luoshenia tenuis against host metabolic ***,by in silico analysis,we demonstrated that the *** was prevalent in the gut microbiomes of healthy humans but were depleted specifically in obesity *** in vitro cultivation revealed that *** produced short chain fatty acids that were verified to modulate host metabolism and some other volatile metabolites to benefit hosts by anti-inflammation and ***,gavage of the *** significantly decreased the body weight gain and food intake of high-fat diet-feeding C57BL/6J mice,which was in parallel with the changed expression level of genes related to satiety and feeding *** then performed the gavage trial using diet induced obese mice,and it revealed that the administration of *** alleviated significantly the abnormal glucose and lipid metabolisms and reduced the inflammatory *** summary,this study revealed a previously-unknown human gut commensal microbe that benefited host metabolism,and set the stage for the development of novel next-generation probiotic applicable for treatment of obesity and related metabolic disorders.

关键词： Luoshenia tenuis Gut microbe Feeding behavior Obesity Next-generation probiotic

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Improved White Shark Optimizer Based Maximum Power Point Tracking Algorithm for Photovoltaic Systems Under Partial Shading Conditions

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JOURNAL OF ELECTRICAL ENGINEERING & TECHNOLOGY 2025年第3期20卷 1293-1306页

作者： Wang, Man-liang Gao, Bing-tuan Lei, Jia-xing Quan, Xiang-jun Guan, Yi-fei Southeast Univ Sch Elect Engn Nanjing Peoples R China State Grid Shandong Elect Power Res Inst Jinan Peoples R China

Photovoltaic arrays present multiple peaks characteristic under partial shading conditions (PSCs), bringing challenge of finding the global maximum power point (GMPP). Recently, the bio-inspired metaheuristics have been popularly applied to find the GMPP under PSCs, while they usually suffer from long convergence time and large power oscillations. Therefore, this paper proposes an improved white shark optimizer (IWSO) based MPPT algorithm under PSCs. The WSO algorithm is a novel metaheuristic and can find the GMPP quickly and accurately due to its flexibility and robustness. Furthermore, an improved method has been proposed, which dynamically adjusts the hierarchy in the white sharks during global exploration and local exploitation. Through this, the search scope for the GMPP is increased and the local exploitation is accelerated. To verify the performance and superiority of the IWSO based MPPT algorithm under PSCs, it is compared with existing metaheuristic based MPPT algorithms (particle swarm optimization, cuckoo search, grey wolf optimizer, and salp swarm optimization) by simulations and then evaluated by experiments. The proposed IWSO based MPPT algorithm shows excellent performance under different PSCs regarding tracking time, tracking efficiency and power oscillations.

关键词： Dynamic hierarchy Maximum power point tracking Partial shading conditions Photovoltaic systems White shark optimizer

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Digital estimation of the solidifying corner shell in continuous casting mold based on a mathematical model of heat flux

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JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING 2025年第4期47卷 1-14页

作者： Zong, Nanfu Jing, Tao Gebelin, Jean-Christophe Yang, Jun Shi, Fengli Ben Gang Grp Corp Digital Intelligence Res Inst Technol Ctr Benxi 117000 Peoples R China Tsinghua Univ Sch Mat Sci & Engn Key Lab Adv Mat Proc Technol Minist Educ Beijing 100084 Peoples R China Univ Leicester Sch Engn Leicester LE1 7RH England

The corner region, being a critical area where defects often occur, was given particular attention. To accurately describe the solidifying corner shell, we developed a mathematical model of boundary heat flux to determine the solidifying behaviors of steel in the continuous casting mold. The model demonstrated robustness in predicting the solidification behavior across a range of scenarios, which is crucial for optimizing the casting process. The model's ability to predict the thermal behavior in this region has led to the development of strategies to mitigate such defects, thereby improving the overall quality of the cast product. In addition, two parameters, decreasing region length and corner edge' heat flow, have been proposed and coupled in this finite element model (FEM). Boltzmann functions are added to the decreasing trend of heat flow around the solidifying shell corner region. The results show that the shell surface temperature of hot spots increases significantly with enlarging the decreasing length, especially in the corner region. Further, the mathematical model is also validated by actually measured breakout shell data. It has been observed that the proposed heat flux estimation results in accurate solidifying corner shell, and the mathematical model of boundary heat flux is suitable to investigate the solidifying corner shell in the continuous casting mold effectively.

关键词： Digital analysis Solidifying corner shell Heat flux Uneven solidification Finite element model

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A strategy to tighten the relaxation of bilinear terms towards petrochemical scheduling problem

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JOURNAL OF GLOBAL OPTIMIZATION 2025年 1-27页

作者： Zhang, Lifeng Ge, Congqin Zhang, Yanfeng Yang, Wenhui Chen, Bingzhen Yuan, Zhihong Tsinghua Univ Dept Chem Engn State Key Lab Chem Engn Beijing 100084 Peoples R China Sichuan Univ Software Engn Chengdu 610065 Sichuan Peoples R China

This paper proposes a strategy to improve the relaxation of the normalized multiparametric disaggregation technique. By introducing additional partitions to continuous variables, a bivariate relaxation scheme, piece-wise normalized disaggregation technique (PNMDT) is developed. The proposed approach is first tested over numerical nonlinear programming examples. Based on such a strategy, a global optimization algorithm is then proposed to handle nonconvex optimization problems which involve plentiful bilinear terms. This proposed algorithm is evaluated through solving common scheduling problems in the petrochemical industry, the multi-period blending problem, and the multi-period crude oil scheduling problem. The computational results show that the proposed method can efficiently improve the quality of relaxation and speed up the convergence by reducing the required iterations within the algorithm procedure.

关键词： Normalized multiparametric disaggregation technique Nonconvex Piece-wise linearization McCormick envelope Scheduling

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3D printable and myoelectrically sensitive hydrogel for smart prosthetic hand control

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Microsystems & Nanoengineering 2025年第1期11卷 211-224页

作者： Jinxin Lai Longya Xiao Beichen Zhu Longhan Xie Hongjie Jiang Shien-Ming Wu School of Intelligent Engineering South China University of TechnologyGuangzhou 511442P.R.China

Surface electromyogram(sEMG)serves as a means to discern human movement intentions,achieved by applying epidermal electrodes to specific body ***,it is difficult to obtain high-fidelity sEMG recordings in areas with intricate curved surfaces,such as the body,because regular sEMG electrodes have stiff *** this study,we developed myoelectrically sensitive hydrogels via 3D printing and integrated them into a stretchable,flexible,and high-density sEMG electrodes *** electrode array offered a series of excellent human-machine interface(HMI)features,including conformal adherence to the skin,high electron-to-ion conductivity(and thus lower contact impedance),and sustained stability over extended *** attributes render our electrodes more conducive than commercial electrodes for long-term wearing and high-fidelity sEMG recording at complicated skin *** in vivo studies were used to investigate its efficacy to control a prosthetic hand by decoding sEMG signals from the human hand via a multiple-channel readout circuit and a sophisticated artificial intelligence *** findings demonstrate that the 3D printed gel myoelectric sensing system enables real-time and highly precise control of a prosthetic hand.

关键词： myoelectrically sensitive hydrogels discern human movement intentionsachieved Myoelectric sensing semg electrodes applying epidermal electrodes d printing surface electromyogram semg serves Hydrogel

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Influence of introducing Zr,Ti,Nb and Ce elements on externally solidified crystals and mechanical properties of high-pressure die-casting Al–Si alloy

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 147-153页

作者： Junjie Li Wenbo Yu Zhenyu Sun Weichen Zheng Liangwei Zhang Yanling Xue Wenning Liu Shoumei Xiong Center of Materials Science and Engineering School of Mechanical and Electronic Control EngineeringBeijing Jiaotong UniversityBeijing 100044China Traffic&Transportation Engineering Central South UniversityChangsha 410075China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China

High pressure die casting(HPDC)AlSi10Mn Mg alloy castings are widely used in the automobile *** can optimize the mechanical properties of castings through heat treatment,while the release of thermal stress arouses the deformation of large integrated ***,the development of non-heat treatment Al alloys is becoming the hot *** addition,HPDC contains externally solidified crystals(ESCs),which are detrimental to the mechanical properties of *** achieve high strength and toughness of non-heat treatment die-casting Al-Si alloy,we used AlSi9Mn alloy as matrix with the introduction of Zr,Ti,Nb,and *** influences on ESCs and mechanical properties were systematically investigated through three-dimensional reconstruction and thermodynamic *** results reveal that the addition of Ti increased ESCs'size and porosity,while the introduction of Nb refined ESCs and decreased ***,large-sized Al_3(Zr,Ti)phases formed and degraded the mechanical *** introduction of Ce resulted in the poisoning effect and reduced mechanical properties.

关键词： aluminium alloy high-pressure die-casting externally solidified crystals non-heat treatment

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Construction of mordenite catalysts with superacid sites for enhanced dimethyl ether carbonylation

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CATALYSIS SCIENCE & TECHNOLOGY 2025年第8期15卷 2510-2518页

作者： Liu, Yunduo Qi, Ji Zhu, Kongying Liu, Hu Liu, Xuhong Wang, Minxing Wang, Mei-Yan Lv, Jing Huang, Shouying Ma, Xinbin Tianjin Univ Sch Chem Engn & Technol Haihe Lab Sustainable Chem Transformat Key Lab Green Chem Technol Minist Educ Tianjin 300350 Peoples R China Zhejiang Inst Tianjin Univ Ningbo Key Lab Green Petrochemm Carbon Emiss Reduc Ningbo 315201 Zhejiang Peoples R China Tianjin Univ Inst Mol Plus Tianjin 300072 Peoples R China Tianjin Univ Nucl Magnet Resonance Test Ctr Tianjin 300350 Peoples R China

Dimethyl ether (DME) carbonylation to methyl acetate (MA) is a key intermediate step in ethanol synthesis. H-form mordenite (HMOR) efficiently catalyzes this reaction, with Br & oslash;nsted acid sites (BASs) serving as the active sites. The catalytic performance strongly depends on the strength of BASs. Modification of zeolites with extraframework species is a common method to tune acid strength, among which three-coordinated Al can generate superacid sites by synergistically interacting with Br & oslash;nsted acid sites. In this study, we employed an ion-exchange method to introduce three-coordinated Al in MOR and systematically investigated their effect on DME carbonylation. 31P MAS NMR spectra confirmed that the interaction between three-coordinated Al and BASs led to the formation of superacidic sites. Reactivity results showed that although the total number of BASs decreased after the introduction of three-coordinated Al, the catalytic performance improved significantly, with a 40% increase in the space-time yield of methyl acetate (STYMA). Mechanistic studies further revealed that these superacidic BASs facilitate the DME dissociation step, accounting for the enhanced activity. These findings provide a systematic strategy for effectively regulating BAS strength in zeolites and offer valuable insights into the rational design and optimization of zeolite catalysts for important industrialized processes.

关键词： Zeolites

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