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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 369-379页

作者： Mei Zhang Wenhao Li Yangfei Chen Yang Jiang Xiaofei Guo Han dong School of Materials Science and Engineering Shanghai UniversityShanghai 200444China State Key Laboratory of Advanced Special Steel Shanghai UniversityShanghai 200444China

The microstructural evolution of a cold-rolled and intercritical annealed medium-Mn steel(Fe-0.10C-5Mn)was investigated during uniaxial tensile ***-situ observations under scanning electron microscopy,transmission electron microscopy,and X-ray diffraction analysis were conducted to characterize the progressive transformation-induced plasticity process and associated fracture initiation *** findings were discussed with the local strain measurements via digital image *** results indicated that Lüders band formation in the steel was limited to 1.5%strain,which was mainly due to the early-stage martensitic phase transformation of a very small amount of the less stable large-sized retained austenite(RA),which led to localized stress concentrations and strain hardening and further retardation of *** small-sized RA exhibited high stability and progressively transformed into martensite and contributed to a stably extended Portevin-Le Chatelier *** volume fraction of RA gradually decreased from 26.8%to 8.2%prior to *** the late deformation stage,fracture initiation primarily occurred at the austenite/martensite and ferrite/martensite interfaces and the ferrite phase.

关键词： medium-Mn steel retained austenite progressive transformation-induced plasticity effect local strain fracture initiation

Vascular anatomy of inferior mesenteric artery in laparoscopic radical resection with the preservation of left colic artery for rectal cancer

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World Journal of Gastroenterology 2018年第32期24卷 3671-3676页

作者： Ke-Xin Wang Zhi-Qiang cheng Zhi Liu Xiao-Yang Wang dong-Song bi Department of General Surgery Qilu Hospital of Shandong University

AIM To investigate the vascular anatomy of inferior mesenteric artery(IMA) in laparoscopic radical resection with the preservation of left colic artery(LCA) for rectal cancer. METHODS A total of 110 patients with rectal cancer who underwent laparoscopic surgical resection with preservation of the LCA were retrospectively reviewed. A 3 D vascular reconstruction was performed before each surgical procedure to assess the branches of the IMA. During surgery, the relationship among the IMA, LCA, sigmoid artery(SA) andsuperior rectal artery(SRA) was evaluated, and the length from the origin of the IMA to the point of branching into the LCA or common trunk of LCA and SA was measured. The relationship between inferior mesenteric vein(IMV) and LCA was also *** Three vascular types were identified in this study. In type A, LCA arose independently from IMA(46.4%, n = 51); in type B, LCA and SA branched from a common trunk of the IMA(23.6%, n = 26); and in type C, LCA, SA, and SRA branched at the same location(30.0%, n = 33). The difference in the length from the origin of IMA to LCA was not statistically significant among the three types. LCA was located under the IMV in 61 cases and above the IMV in 49 cases. CONCLUSION The vascular anatomy of the IMA and IMV is essential for laparoscopic radical resection with preservation of the LCA for rectal cancer. To recognize different branches of the IMA is necessary for the resection of lymph nodes and dissection of vessels.

关键词： Inferior mesenteric artery Left colic artery Rectal cancer Laparoscopic

Adaptive digital self-interference cancellation based on fractional order LMS in LFMCW radar

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Journal of Systems Engineering and Electronics 2021年第3期32卷 573-583页

作者： LUO Yongjiang bi Luhao ZHAO dong School of Electronic Engineering Xidian UniversityXi’an 710071China

Adaptive digital self-interference cancellation(ADSIC)is a significant method to suppress self-interference and improve the performance of the linear frequency modulated continuous wave(LFMCW)*** to efficient implementation structure,the conventional method based on least mean square(LMS)is widely used,but its performance is not sufficient for LFMCW *** achieve a better self-interference cancellation(SIC)result and more optimal radar performance,we present an ADSIC method based on fractional order LMS(FOLMS),which utilizes the multi-path cancellation structure and adaptively updates the weight coefficients of the cancellation ***,we derive the iterative expression of the weight coefficients by using the fractional order derivative and short-term memory ***,to solve the problem that it is difficult to select the parameters of the proposed method due to the non-stationary characteristics of radar transmitted signals,we construct the performance evaluation model of LFMCW radar,and analyze the relationship between the mean square deviation and the parameters of ***,the theoretical analysis and simulation results show that the proposed method has a better SIC performance than the conventional methods.

关键词： adaptive digital self-interference cancellation(ADSIC) linear frequency modulated continuous wave(LFMCW)radar fractional order least mean square(LMS)

Plasmonic tandem heterojunctions enable high-efficiency charge transfer for broad spectrum photocatalytic hydrogen production

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Journal of Energy Chemistry 2025年第1期100卷 710-720页

作者： Wenxuan Chen Xiu-Qing Qiao Guo Hui Bojing Sun dongfang Hou Meidi Wang Xueqian Wu Tao Wu dong-Sheng Li College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials China Three Gorges University Hubei Three Gorges Laboratory College of Chemistry and Materials Science and Guangdong Provincial Key Laboratory of Supramolecular Coordination Chemistry Jinan University

Rational engineering of semiconductor photocatalysts for efficient hydrogen production is of great significance but still challenging,primarily due to the limitations in charge transfer ***,a fascinating plasmonic tandem heterojunction with the hc-CdS/Mo2C@C heterostructure is aimfully prepared for effectively promoting the charge separation kinetics of the CdS photocatalyst via the synergistic strategy of phase junction,Schottky junction,and photothermal *** difference in atomic configuration between cubic-CdS （c-CdS） and hexagonal-CdS （h-CdS） leads to effective charge separation through a typical Ⅱ charge transfer mechanism,and plasmonic Schottky junction further extracts the electrons in the hc-CdS phase junction to realize gradient charge ***,the photothermal effect of Mo2C@C helps to expand the light absorption,accelerate charge transfer kinetics,and reduce the hydrogen evolution energy *** carbon layer provides a fast channel for charge transfer and protects the photocatalyst from *** a result,the optimized hc-CMC photocatalyst exhibits a significantly high photocatalytic H2production activity of 28.63 mmol/g/h and apparent quantum efficiency of 61.8%,surpassing most of the reported *** study provides a feasible strategy to enhance the charge transfer kinetics and photocatalytic activity of CdS by constructing plasmonic tandem heterogeneous junctions.

关键词： Heterojunctions LSPR Photocatalyst Phase junction Schottky junction Photothermal effect

A Class of Finite-Dimensional Representations of U_q(sl_2)

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Acta Mathematica Sinica,English Series 2013年第9期29卷 1703-1712页

作者： dong Ming cheng dong SU Department of Mathematics and Applied Mathematics He'nan University of Science and Technology

In order to study a class of finite-dimensional representations of Uq（sl2）, we deal with the quotient algebra Uq （m, n, b） of quantum group Uq（sl2） with relations Kr=1, Emr=b, Fnr=0 in this paper, where q is a root of unity. The algebra Uq（m, n, b） is decomposed into a direct sum of indecomposable （left） ideals. The structures of indecomposable projective representations and their blocks are determined.

关键词： Quantum group representation root of unity

Transient simulation and analysis of the simultaneous load rejection process in pumped storage power stations using a 1-D-3-D coupling method

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Journal of Hydrodynamics 2021年第5期33卷 979-991页

作者： cheng-cheng Yin Wei Zeng Jian-dong Yang State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan UniversityWuhan 430072China School of Civil Environmental and Mining EngineeringThe University of AdelaideAdelaideAustralia

The load rejection imposes a danger in the pumped storage hydropower plants(PSPs),especially when two or more pump turbines reject their loads *** this paper,the simultaneous load rejection scenarios in the PSPs are simulated and analyzed by using a 1-D,3-D coupling *** PSP pipe system is modeled by using the 1-D method of characteristics(MOC)and one pump turbine is modeled by using the 3-D computational fluid dynamics(CFD).The simulated flow and head are transmitted between the 1-D,3-D regions through the interfaces between these two *** assuming that the installed pump turbines are of the same type and the corresponding branch pipes have the same properties,the variations of the transient pressures and the flowrates in different pump turbines will be ***,only one pump turbine is modeled by the CFD in this study.A new branching junction boundary is proposed to assign the simulated dynamic pressures and flowrates obtained by the 3-D model to other pump *** 1-D-3-D coupling method is validated by experiments with only one pump turbine rejecting its *** simultaneous load rejection of two pump turbines is then simulated and validated by comparing the results with those of the 1-D *** building only one pump turbine 3-D model,a large amount of computational resources can be *** simultaneous load rejection scenario is then analyzed and compared with the single load rejection *** water hammer pressures and a larger rotational speed occur in the simultaneous load rejection scenario,which leads to larger pressure pulsations in the pump *** larger pressure pulsations can be further explained by the flow patterns in the runner channels,in which heavier flow separations and vortexes can be observed in the simultaneous load rejection scenario.

关键词： Pump-turbine,pumped hydro computational fluid dynamics(CFD) hydraulic transient load rejection

Ligustilide protects PC12 cells from oxygen-glucose deprivation/reoxygenation-induced apoptosis via the LKB1-AMPK-mTOR signaling pathway

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Neural Regeneration Research 2020年第3期15卷 473-481页

作者： Dan-Yang Zhao dong-dong Yu Li Ren Guo-Rong bi Shengjing Hospital of China Medical University ShenyangLiaoning ProvinceChina The First People’s Hospital of Shenyang ShenyangLiaoning ProvinceChina The First Affiliated Hospital of Liaoning University of Traditional Chinese Medicine ShenyangLiaoning ProvinceChina

Autophagy has been shown to have a protective effect against brain ***(LIG)is a bioactive substance isolated from Ligusticum chuanxiong,a traditional Chinese *** has a neuroprotective effect;however,it is unclear whether this neuroprotective effect involves *** this study,PC12 cells were treated with 1×10^-5–1×10^-9 M LIG for 0,3,12 or 24 hours,and cell proliferation was evaluated using the 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium(MTS)*** with 1×10^-6 M LIG for 3 hours had the greatest effect on cell proliferation,and was therefore used for subsequent ***12 cells were pre-treated with 1×10^-6 M LIG for 3 hours,cultured in 95%N2/5%CO2 in Dulbecco’s modified Eagle’s medium without glucose or serum for 4 hours,and then cultured normally for 16 hours,to simulate oxygen-glucose deprivation/reoxygenation(OGD/R).Cell proliferation was assessed with the MTS *** was detected by flow *** expression levels of apoptosis-related proteins,Bcl-2 and Bax,autophagy-related proteins,Beclin 1 and microtubule-associated protein l light chain 3B(LC3-II),and liver kinase B1(LKB1)-5′-adenosine monophosphate-activated protein kinase(AMPK)-mammalian target of rapamycin(mTOR)signaling pathway-related proteins were assessed by western blot *** staining was used to detect LC3-II *** formation was observed by electron *** significantly decreased apoptosis,increased Bcl-2,Beclin 1 and LC3-II expression,decreased Bax expression,increased LC3-II immunoreactivity and the number of autophagosomes,and activated the LKB1-AMPK-mTOR signaling pathway in PC12 cells exposed to OGD/*** addition of the autophagy inhibitor 3-methyladenine or dorsomorphin before OGD/R attenuated the activation of the LKB1-AMPK-mTOR signaling pathway in cells treated with *** together,our findings show that LIG promotes autophagy and protects

关键词： AMPK apoptosis autophagy Bax Bcl-2 Beclin 1 LC3-II ligustilide mTOR PC12 cells

A low redox potential and long life organic anode material for sodium-ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 557-564页

作者： Zhi Li Yang Wei Kang Zhou Xin Huang Xing Zhou Jie Xu Taoyi Kong Junwei Lucas Bao Xiaoli dong Yonggang Wang Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Institute of New Energy Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) Fudan University Department of Chemistry Boston College School of Materials Science and Engineering Anhui University of Technology

Sodium-ion batteries （SIBs） with organic electrodes are an emerging research direction due to the sustainability of organic materials based on elements like C,H,O,and sodium ***,organic electrode materials for SIBs are mainly used as cathodes because of their relatively high redox potentials（>1 V）.Organic electrodes with low redox potential that can be used as anode are ***,a novel organic anode material （tetrasodium 1,4,5,8-naphthalenetetracarboxylate,Na4TDC） has been developed with low redox potential （bility for 1200 cycles even with a high mass loading of up to 20 mg *** pairing with a thick Na3V2（PO4）3cathode (20.6 mg cm-2),the as-fabricated full cell exhibited high operating voltage （2.8 V）,excellent rate performance and cycling stability with a high capacity retention of 88.7% after 200 cycles,well highlighting the Na4TDC anode material for SIBs.

关键词： Organic anode material Low redox potential Composite anode Sodium-ion batteries

Surface Integrity of Ultrasonically-Assisted Milled Ti6Al4V Alloy Manufactured by Selective Laser Melting

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Chinese Journal of Mechanical Engineering 2021年第4期34卷 42-55页

作者： Sai Guo Wei Du Qinghong Jiang Zhigang dong bi Zhang Department of Mechanical and Energy Engineering Southern University of Science and TechnologyShenzhen 518055China School of Mechanical Engineering Dalian University of TechnologyDalian 116024China Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education Dalian University of TechnologyDalian 116024China

The Ti6Al4V parts produced by the existing selective laser melting(SLM)are mainly confronted with poor surface finish and inevitable interior defects,which substantially deteriorates the mechanical properties and performances of the *** this regard,ultrasonically-assisted machining(UAM)technique is commonly introduced to improve the machining quality due to its merits in increasing tool life and reducing cutting ***,most of the previous studies focus on the performance of UAM with ultrasonic vibrations applied in the tangential and feed directions,whereas few of them on the impact of ultrasonic vibration along the vertical *** this study,the effects of feed rate on surface integrity in ultrasonically-assisted vertical milling(UAVM)of the Ti6Al4V alloy manufactured by SLM were systemically investigated compared with the conventional machining(CM)*** results revealed that the milling forces in UAVM showed a lower amplitude than that in CM due to the intermittent cutting *** surface roughness values of the parts produced by UAVM were generally greater than that by CM owing to the extra sinusoidal vibration textures induced by the milling ***,the extra vertical ultrasonic vibration in UAVM was beneficial to suppressing machining *** feed rate increased,surface microhardness and thickness of the plastic deformation zone in CM raised due to more intensive plastic deformation,while these two material properties in UAVM were reduced owing to the mitigated impact effect by the high-frequency vibration of the milling ***,the improved surface microhardness and reduced thickness of the subsurface deformation layer in UAVM were ascribed to the vertical high-frequency impact of the milling cutter in *** general,the results of this study provided an in-depth understanding in UAVM of Ti6Al4V parts manufactured by SLM.

关键词： Ultrasonically-assisted vertical milling Surface integrity Ti6Al4V Selective laser melting

Proximal Alternating-Direction-Method-of-Multipliers-Incorporated Nonnegative Latent Factor Analysis

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IEEE/CAA Journal of Automatica Sinica 2023年第6期10卷 1388-1406页

作者： Fanghui bi Xin Luo Bo Shen Hongli dong Zidong Wang the Chongqing Institute of Green and Intelligent Technology Chinese Academy of Sciencesand also with the Chongqing SchoolUniversity of Chinese Academy of SciencesChongqing 400714China the College of Computer and Information Science Southwest UniversityChongqing 400715China the College of Information Science and Technology Donghua UniversityShanghai 201620China the Artificial Intelligence Energy Research Institute Northeast Petroleum UniversityDaqing 163318China the Department of Computer Science Brunel University LondonUxbridge UB83PHUnited Kingdom

High-dimensional and incomplete(HDI)data subject to the nonnegativity constraints are commonly encountered in a big data-related application concerning the interactions among numerous nodes.A nonnegative latent factor analysis(NLFA)model can perform representation learning to HDI data ***,existing NLFA models suffer from either slow convergence rate or representation accuracy *** address this issue,this paper proposes a proximal alternating-directionmethod-of-multipliers-based nonnegative latent factor analysis(PAN)model with two-fold ideas:(1)adopting the principle of alternating-direction-method-of-multipliers to implement an efficient learning scheme for fast convergence and high computational efficiency;and(2)incorporating the proximal regularization into the learning scheme to suppress the optimization fluctuation for high representation learning accuracy to HDI *** studies verify that PAN converges to a Karush-KuhnTucker(KKT)stationary point of its nonnegativity-constrained learning objective with its learning *** results on eight HDI matrices from real applications demonstrate that the proposed PAN model outperforms several state-of-the-art models in both estimation accuracy for missing data of an HDI matrix and computational efficiency.

关键词： nonnegative representation convergence