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Surface deco.ation of mesocarbon microbeads with multifunctional TiNbO_(4-x)@C co.ting layer as high rate and stable anode of Li-ion batteries

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Rare Metals 2024年第5期43卷 2053-2066页

作者： Jia-Mei Lai Zhi-Min Zou Yu Bai Yu-Tao Xing Chun-Hai Jiang Fujian Provincial Key Laboratory of Functional Materials and Applications Institute of Advanced Energy MaterialsSchool of Materials Science and EngineeringXiamen University of TechnologyXiamen 361024China shanghai XFH Science and technology Development co. Ltd.Shanghai 200949China Fujian XFH New Energy Materials co. Ltd.Yong'an 366000China Shenzhen XFH Science and technology co. Ltd.Shenzhen 518071China Laboratorio de Microsco.ia Eletronica de Alta Resolucao Centro de Caracterizagao Avangada Para a Industria de Petroleo(LaMAR/CAIPE)Universidade Federal FluminenseNiteroiRJ 24210-346Brazil

Surface modification of graphite anode with electroactive matters has been proven of a more practical strategy in enhancing the performance of Li-ion batteries than exploring alternative novel anode ***,rutile TiNbO_(4-x) nanoparticles with a tunnel structure are employed as multifunctional deco.ation substances in co.bination with a carbon co.ting layer to improve the rate and cycle properties of mesocarbon microbeads(MCMBs).As co.pared to pristine MCMB,the Li^(+)diffusion co.fficients of the co.posite anodes are enhanced due to the synergistic effect of TiNbO_(4-x)@***,the overcharge and voltage polarization of the co.posite anodes at high rate are obviously minimized due to the current sharing effect of the high-potential TiNbO_(4-x).Moreover,the amorphous Li_(y)TiNbO_(4-x) co.verted from TiNbO_(4-x) in the initial lithiation process can deliver pseudocapacitive capacity to the co.posite anodes from the seco.d *** of these functions of TiNbO_(4-x)@Cco.ting layer have directly co.tributed to the improved rate and cycle performance of the MCMB/TiNbO_(4-x)@C co.posite *** one co.taining 12.0 wt%TiNbO_(4-x) exhibits a high reversible specific capacity of 118 m Ah·g^(-1)at 10C(1C=372 m A·g^(-1)),together with a high capacity retention of 90.9%after 300 cycles at 3C,which are all much superior to those of pristine MCMB.

关键词： Li-ion batteries MCMB TiNbO_(4-x)@C Surface deco.ation Rate capability

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Au Nanoparticle-DNAzyme Dual Catalyst System for Sensitively co.orimetric Detection of Thrombin

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Chemical Research in Chinese Universities 2013年第5期29卷 868-873页

作者： RAO Xin-yi ZHANG Jia-jia CUI Jing HU Ying LIU Ting CHAI Jing-feng CHENG Gui-fang HE Pin-gang FANG Yu-zhi Department of Chemistry East China Normal University Shanghai 200241 P R. China shanghai International Airport co. Ltd. Shanghai 201202 P. R. China

A novel co.orimetric aptasensor was developed for thrombin detection with high sensitivity and specificity The assay takes the advantage of Au nanoparticles-DNAzyme as a dual catalytic system for signal amplification. Au nanparticles were modified with peroxidase mimicking DNAzyme sequence as well as thrombin binding aptamer. And then the thrombin binding aptamer hybridized with its co.plementary sequence which was immobilized on the surface of the magnetic nanoparticles to co.struct the co.orimetric aptasensor. In the presence of thrombin, the tar- get-induced displacement takes place, resulting in the dissociation of the aptasensor. The DNAzyme functioned Au NPs are released due to the co.bine ability of thrombin binding aptamer with thrombin. The released Au NPs are capable of catalyzing the co.orless 2,2＇-azino-bis（3-ethylbenzothiazoline）-6-sulfonic acid（ABTS） co.version into a blue-green product by H202-mediated oxidation, thus can amplify the co.orimetric readout signals of thrombin detec- tion. Such a device can serve as a novel selectivity sensor for thrombin with a detection limit of 0.6 nmol/L.

关键词： Au nanoparticle Magnetic nanoparticle DNAzyme Aptamer Thrombin

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Special co.umn for the Distributed Energy System with Renewable Energy and Natural Gas

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Journal of Thermal Science 2020年第5期29卷 1095-1096页

作者： HAN Wei ZHU Tong GAN Zhongxue Institute of Engineering Thermophysics CASBeijingChina School of Mechanical Engineering Tongji UniversityShanghaiChina ENN Science and technology Development co. Ltd.HebeiChina

With the rapid growth of urban population,the co.tradiction between energy co.sumption and environment protection has begun to restrict the development of the eco.ogical *** distributed energy network system,which co.bines the advantages of renewable energy and distributed energy,has gradually emerged and beco.e one of the main development directions of the next-generation energy *** energy network system is a new type of intelligent energy network system that has evolved from the distributed energy system with integration of multiple energy networks and information *** co.necting multiple renewable energy and natural gas in the region with end users in a distributed way,it can realize the instant and bidirectional transmission of co.d,heat and electricity,and achieve ordering of the entire network through integration and co.perative co.trol of the material flow,energy flow and information flow.

关键词： network integration co.necting

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Principal Model Analysis Based on Bagging PLS and PCA and Its Application in Financial Statement Fraud

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Journal of Systems Science and Information 2024年第2期12卷 212-228页

作者： Xiao LIANG Qiwei XIE Chunyan LUO Liang TANG Yi SUN School of Eco.omics and Management Beijing University of TechnologyBeijing 100124China shanghai Tongtu Semico.ductor technology co. LtdShanghai 210203China School of Finance Anhui University of Finance&EconomicsBengbu 233000China

Motivated by the Bagging Partial Least Squares(Bagging PLS)and Principal co.ponent Analysis(PCA)algorithms,a novel approach known as Principal Model Analysis(PMA)method is introduced in this *** the proposed PMA algorithm,the PCA and the Bagging PLS are *** this method,multiple PLS models are trained on sub-training sets,derived from the training set using the random sampling with replacement *** regression co.fficients of all the sub-PLS models are fused in a joint regression co.fficient *** final projection direction is then estimated by performing the PCA on the joint regression co.fficient ***,the proposed PMA method is co.pared with other traditional dimension reduction methods,such as PLS,Bagging PLS,Linear discriminant analysis(LDA)and *** results on six public datasets demonstrate that our proposed method co.sistently outperforms other approaches in terms of classification performance and exhibits greater ***,it is employed in the application of financial statement fraud *** and other five algorithms are utilized to financial statement fraud which co.cerned by the academic co.munity,and the results indicate that the classification of PMA surpassed that of the other methods.

关键词： principal model analysis partial least squares principal co.ponent analysis dimension reduction ensemble learning financial statement fraud detection

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SpikingMiniLM: energy-efficient spiking transformer for natural language understanding

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Science China(Information Sciences) 2024年第10期67卷 115-128页

作者： Jiayu ZHANG Jiangrong SHEN Zeke WANG Qinghai GUO Rui YAN Gang PAN Huajin TANG co.lege of co.puter Science and technology Zhejiang University The State Key Lab of Brain-Machine Intelligence Zhejiang University co.laborative Innovation Center of Artificial Intelligence Zhejiang University Advanced co.puting and Storage Laboratory Huawei Technologies Co. Ltd. co.lege of co.puter Science and technology Zhejiang University of Technology MOE Frontier Science Center for Brain Science and Brain-Machine integration Zhejiang University

In the era of large-scale pretrained models, artificial neural networks（ANNs） have excelled in natural language understanding（NLU） tasks. However, their success often necessitates substantial co.putational resources and energy co.sumption. To address this, we explore the potential of spiking neural networks（SNNs） in NLU——a promising avenue with demonstrated advantages, including reduced power co.sumption and improved efficiency due to their event-driven characteristics. We propose the SpikingMiniLM,a novel spiking Transformer model tailored for natural language understanding. We first introduce a multi-step enco.ing method to co.vert text embeddings into spike trains. Subsequently, we redesign the attention mechanism and residual co.nections to make our model operate on the pure spike-based paradigm without any normalization technique. To facilitate stable and fast co.vergence, we propose a general parameter initialization method grounded in the stable firing rate principle. Furthermore, we apply an ANN-to-SNN knowledge distillation to overco.e the challenges of pretraining SNNs. Our approach achieves a macro-average sco.e of 75.5 on the dev sets of the GLUE benchmark, retaining 98% of the performance exhibited by the teacher model MiniLMv2. Our smaller model also achieves similar performance to BERTMINIwith fewer parameters and much lower energy co.sumption, undersco.ing its co.petitiveness and resource efficiency in NLU tasks.

关键词： spiking neural networks natural language understanding spiking Transformer spike-based attention multi-step enco.ing ANN-to-SNN distillation

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Chimeric antigen receptor- and natural killer cell receptor-engineered innate killer cells in cancer immunotherapy

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Cellular & Molecular Immunology 2021年第9期18卷 2083-2100页

作者： Cai Zhang Yuan Hu Weihua Xiao Zhigang Tian NK CellTech co. Ltd.Shanghai International Medical ParkShanghaiChina Institute of Immunology University of Science and Technology of ChinaHefeiAnhuiChina Research Unit of NK Cell Study Chinese Academy of Medical SciencesBeijingChina

Chimeric antigen receptor(CAR)-engineered T-cell(CAR-T)therapy has demonstrated impressive therapeutic efficacy against hematological malignancies,but multiple challenges have hindered its application,particularly for the eradication of solid *** killer cells(IKCs),particularly NK cells,NKT cells,andγδT cells,employ specific antigen-independent innate tumor reco.nition and cytotoxic mechanisms that simultaneously display high antitumor efficacy and prevent tumor escape caused by antigen loss or *** are associated with a low risk of developing GVHD,thus offering new opportunities for allogeneic“off-the-shelf”cellular therapeutic *** unique innate features,wide tumor reco.nition range,and potent antitumor functions of IKCs make them potentially excellent candidates for cancer immunotherapy,particularly serving as platforms for CAR *** this review,we first provide a brief summary of the challenges hampering CAR-T-cell therapy applications and then discuss the latest CAR-NK-cell research,co.ering the advantages,applications,and clinical translation of CAR-and NK-cell receptor(NKR)-engineered *** in synthetic biology and the development of novel genetic engineering techniques,such as gene-editing and cellular reprogramming,will enable the further optimization of IKC-based anticancer therapies.

关键词： Innate killer cells Chimeric antigen receptor Natural killer cell receptor Genetic engineering Adoptive cell therapy Tumor microenvironment

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Robust identification of weld seam based on region of interest operation

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Advances in Manufacturing 2020年第4期8卷 473-485页

作者： Ying-Zhong Tian Hong-Fei Liu Long Li Wen-Bin Wang Jie-Cai Feng Feng-Feng Xi Guang-Jie Yuan School of Mechatronic Engineering and Automation Shanghai UniversityShanghai 200444People's Republic of China School of Mechanical and Electrical Shenzhen PolytechnicShenzhen 518055GuangdongPeople's Republic of China shanghai Rui Rong Laser Welding technology co. LtdShanghai 201306People's Republic of China Department of Mechanical Aerospace and Industrial EngineeringRyerson UniversityTorontoCanada

For welding path determination,the use of vision sensors is more effctive co.pared with co.plex ofline programming and teaching in small to medium volume ***,interference factors such as scratches and stains on the surface of the workpiece may affect the extraction of weld *** the obtained weld image,the weld seams have two distinct features related to the workpiece,which are co.tinuous in a single process and separated from the workpiece's gray *** this paper,a novel method is proposed to identify the welding path based on the region of interest(ROI)opera-tion,which is co.centrated around the weld seam to reduce the interference of external *** co.plete the identi-fication of the entire welding path,a novel algorithm is used to adaptively generate a dynamic ROI(DROI)and perform iterative *** identification accuracy of this algorithm is improved by setting the boundary co.di-tions within the ***,the experimental results co.firm that the co.fficient factor used for determining the ROI size is a pivotal influencing factor for the robustness of the algorithm and for obtaining an optimal *** this algorithm,the welding path identification accuracy is within 2 pixels for three co.mon butt weld types.

关键词： Passive vision Noise reduction Welding path identification Region of interest(ROI)

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Deformation and Loco.otion of Untethered Small-Scale Magnetic Soft Robotic Turtle with Programmable Magnetization

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Journal of Bionic Engineering 2024年第2期21卷 754-763页

作者： Lin Xu Liu Yang Tao Li Xingbang Zhang Jianning Ding School of Mechanical Engineering Jiangsu UniversityZhenjiang212013China The Key Laboratory of Bionic Engineering(Ministry of Education) Jilin UniversityChangchun130012China shanghai Tianchun technology co. LtdShanghai201802China School of Mechanical Engineering Yangzhou UniversityYangzhou225009China

Inspired by the way sea turtles rely on the Earth’s magnetic field for navigation and loco.otion,a novel magnetic soft robotic turtle with programmable magnetization has been developed and investigated to achieve biomimetic loco.otion patterns such as straight-line swimming and turning *** soft robotic turtle(12.50 mm in length and 0.24 g in weight)is integrated with an Eco.lex-based torso and four magnetically programmed acrylic elastomer VHB-based limbs co.taining samarium-iron–nitrogen particles,and was able to carry a load more than twice its own *** to the limb loco.otion characteristics of sea turtles,the magnetic torque causes the four limbs to mimic sinusoidal bending deformation under the influence of an external magnetic field,so that the turtle swims co.tinuously ***,when the bending deformation magnitudes of its left and right limbs differ,the soft robotic turtle switches from straight-line to turning swimming at 6.334 rad/***,the tracking swimming activities of the soft robotic turtle along specific planned paths,such as square-shaped,S-shaped,and double U-shaped maze,is anticipated to be utilized for special detection and targeted drug delivery,among other applications owing to its superior remote directional co.trol ability.

关键词： Magnetic soft robotic turtle Programmable magnetization Untethered soft robotics Bending deformation

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Efficient visible light photodegradation of BiVO_(4):Yb^(3+)/Tm^(3+)with high co.tent of tetragonal phase

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Frontiers of Chemical Science and Engineering 2024年第11期18卷 135-149页

作者： Han Xie Mitang Wang Zhigao Sun Xiaoyu Lu Dongliang Zhang Siqingaowa Jin Siheng Chen School of Materials and Chemistry University of Shanghai for Science and TechnologyShanghai 200093China

In photocatalytic studies,tetragonal bismuth vanadate(t-BiVO_(4))is not promising due to its wide band ***,acco.ding to previous studies,the tetragonal phase is inevitable when the monoclinic bismuth vanadate(m-BiVO_(4))is ***,it is necessary to find ways to improve the photoresponse and photocatalytic ability of t-BiVO_(4)under visible *** this study,Yb^(3+)and Tm^(3+)co.doped BiVO_(4)was synthesized by a simple hydrothermal method,and its microstructure,morphology and optical properties were characterized and analyzed by scanning electron microsco.e,transmission electron microsco.y,Brunauer-Emmett-Teller,X-ray diffraction,Raman,X-ray photoelectron spectrosco.y,diffuse reflectance spectra,photoluminescence,upco.version luminescence and other *** results show that BiVO_(4):Yb^(3+)/Tm^(3+)(BVYT)has a high co.tent of tetragonal phase(about 80%),showing the characteristics of t-BiVO_(4).BVYT shows a higher separation efficiency of photogenerated carriers,its transient photocurrent response intensity increased by about 3 times,and the photocatalytic efficiency is significantly improved co.pare with the undoped m-BiVO_(4).Under simulated sunlight,BVYT co.pletely degraded methylene blue(MB)solution and rhodamine B solution in 45 and 90 min,respectively,and the reaction rate was significantly *** also shows excellent photocatalytic ability under visible light,about 35%of MB solution was degraded within 45 min under visible light irradiation(>420 nm),this is because Yb^(3+)effectively promotes the upco.version luminescence of Tm^(3+)in response to visible light,and the energy cycle mechanism of Yb-Tm-Tm is ***,BiVO_(4)with high co.tent of tetragonal phase has excellent photoactivity,even exceeding m-BiVO_(4).This is a novel disco.ery in the field of photocatalysis,which provides a broader application prospect for BiVO_(4)in photocatalysis.

关键词： photocatalysis bismuth vanadate rare earth upco.version luminescence

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Durable immunomodulatory hierarchical patch for rotator cuff repairing

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Bioactive Materials 2024年第7期37卷 477-492页

作者： Liren Wang Yonghang Liu Zhiqi Lin Huiang Chen Bowen Liu Xiaoyu Yan Tonghe Zhu Qin Zhang Jinzhong Zhao Department of Sports Medicine Department of OrthopedicsShanghai Institute of Microsurgery on ExtremitiesShanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of MedicineNo.600 Yishan RoadShanghai200233China Multidisciplinary Centre for Advanced Materials Institute for Frontier Medical TechnologySchool of Chemistry and Chemical EngineeringShanghai University of Engineering Science333 Longteng Rd.Shanghai201620China Institute of Translational Medicine Shanghai University99 Shangda Rd.Shanghai200444China Regenerative Sports Medicine and Translational Youth Science and technology Innovation Workroom Shanghai Jiao Tong University School of MedicineNo.227 South Chongqing RoadShanghai200025China Bioarticure Medical technology(shanghai)co. LtdShanghaiChina

Degradable rotator cuff patches,followed over five years,have been observed to exhibit high re-tear rates exceeding 50%,which is attributed to the inability of degradable polymers alone to restore the post-rotator cuff tear(RCT)inflammatory ***,poly(ester-ferulic acid-urethane)urea(PEFUU)was developed,featuring prolonged anti-inflammatory functionality,achieved by the integration of ferulic acid(FA)into the polyurethane repeating *** stably releases FA in vitro,reversing the inflammatory niche produced by M1 macrophages and restoring the directed differentiation of stem *** PEFUU,hierarchical co.posite nanofiber patch(HCNP)was fabricated,simulating the natural microstructure of the tendon-to-bone interface with an aligned-random *** inco.poration of enzymatic hydrolysate derived from decellularized Wharton jelly tissue into the random layer co.ld further enhance cartilage regeneration at the tendon-to-bone *** rat RCT repairing model,HCNP possessing prolonged anti-inflammatory properties uniquely facilitated physiological healing at the tendon-to-bone interface’s *** alignment of fibers was restored,and histologically,the characteristic tripartite distribution of co.lagen I-co.lagen II-co.lagen I was *** study offers a universal approach to the functionalization of degradable polymers and provides a foundational reference for their future applications in promoting the in vivo regeneration of musculoskeletal tissues.

关键词： Tendon-to-bone interface Inflammation Functional regeneration Bioactive polymer Bulk modification

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