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Nano Materials Science 2022年第2期4卷 104-112页

作者： Ya Ru Pei Ming Zhao Yu Peng Zhu Chun Cheng Yang Qing Jiang Key Laboratory of Automobile Materials(Jilin University) Ministry of Educationand School of Materials Science and EngineeringJilin UniversityChangchun130022China

Thanks to inexpensive and bountiful potassium resources,potassium ion batteries(PIBs)have come into the spotlight as viable alternatives for next-generation battery systems.However,poor electrochemical kinetics due to the large size of the K^(+) is a major challenge for PIB anodes.In this paper,an ingenious design of VN nanoparticleassembled hollow microspheres within N-containing intertwined carbon nanofibers(VN-NPs/N-CNFs)via an electrospinning process is reported.Employed as PIB anodes,VN-NPs/N-CNFs exhibit a superb rate property and prolonged cyclability,surpassing that of other reported metal nitride-based anodes.This is ascribed to:(i)the VN NP-assembled hollow microspheres,which shorten the K^(+) diffusion distance,and mitigate volume expansion;and(ii)the interconnected N-CNFs,which supply numerous active sites for K^(+) adsorption and facilitate rapid electron/ion transport.

关键词： Potassium-ion batteries VN nanoparticles N-doped carbon nanofibers Hollow microspheres

Decoding epigenetic codes: new frontiers in exploring recovery from spinal cord injury

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Neural Regeneration Research 2020年第9期15卷 1613-1622页

作者： Bo-Yin Zhang peng-yu Chang Qing-San zhu yu-Hang zhu Saijilafu Department of Orthopedic Surgery China-Japan Union Hospital of Jilin UniversityChangchunJilin ProvinceChina Department of Radiotherapy The First Bethune Hospital of Jilin UniversityChangchunJilin ProvinceChina Department of Orthopedics The First Affiliated Hospital of Soochow UniversitySuzhouJiangsu ProvinceChina

Spinal cord injury that results in severe neurological disability is often incurable.The poor clinical outcome of spinal cord injury is mainly caused by the failure to reconstruct the injured neural circuits.Several intrinsic and extrinsic determinants contribute to this inability to reconnect.Epigenetic regulation acts as the driving force for multiple pathological and physiological processes in the central nervous system by modulating the expression of certain critical genes.Recent studies have demonstrated that post-SCI alteration of epigenetic landmarks is strongly associated with axon regeneration,glial activation and neurogenesis.These findings not only establish a theoretical foundation for further exploration of spinal cord injury,but also provide new avenues for the clinical treatment of spinal cord injury.This review focuses on the epigenetic regulation in axon regeneration and secondary spinal cord injury.Together,these discoveries are a selection of epigenetic-based prognosis biomarkers and attractive therapeutic targets in the treatment of spinal cord injury.

关键词： axon regeneration epigenetic biomarkers epigenetic modification histone microRNA prognosis secondary injury spinal cord injury

Profile error compensation in precision grinding of ellipsoid optical surface

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Chinese Journal of Aeronautics 2021年第4期34卷 115-123页

作者： Shimeng yu Jiahao zhu peng YAO Chuanzhen HUANG Center for Advanced Jet Engineering Technologies(CaJET) School of Mechanical EngineeringShandong UniversityJinan 250061China Key Laboratory of High Efficiency and Clean Mechanical Manufacture Shandong UniversityMinistry of EducationJinan 250061China

Optical glass elements with the ellipsoidal surface are used in many critical aerospace instruments,such as satellites,telescope and cameras.Their optical performance is mainly affected by profile accuracy and surface quality.In this paper,a rectangular ellipsoid surface is precisely ground on a BK7 optical glass blank by grating scanning grinding path with a three-axis CNC precision surface grinder.A profile error compensation procedure for ellipsoidal grinding is proposed based on the error analysis about the primary error sources in the XY and YZ projection planes during the grinding process.The mathematical prediction models of the wheel arc profile error,the measurement and wear error of the grinding wheel radiuses are established.By applying the proposed error compensation procedure,the profile accuracy of the ellipsoidal surface was improved from 4 lm to 2 lm in the XY plane,and improved from 15 lm to 5 lm in the YZ plane.

关键词： Aspheric lens Ellipsoid surface Error compensation Grinding wheel truing Precision grinding

A Positive Influence Maximization Algorithm in Signed Social Networks

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Computers, Materials & Continua 2023年第8期76卷 1977-1994页

作者： Wenlong zhu Yang Huang Shuangshuang Yang yu Miao Chongyuan peng College of Computer and Control Engineering Qiqihar UniversityQiqihar161006China Heilongjiang Key Laboratory of Big Data Network Security Detection and Analysis Qiqihar UniversityQiqihar161006China College of Teacher Education Qiqihar UniversityQiqihar161006China

The influence maximization(IM)problem aims to find a set of seed nodes that maximizes the spread of their influence in a social network.The positive influence maximization(PIM)problem is an extension of the IM problem,which consider the polar relation of nodes in signed social networks so that the positive influence of seeds can be the most widely spread.To solve the PIM problem,this paper proposes the polar and decay related independent cascade(IC-PD)model to simulate the influence propagation of nodes and the decay of information during the influence propagation in signed social networks.To overcome the low efficiency of the greedy based algorithm,this paper defines the polar reverse reachable(PRR)set and devises a signed reverse influence sampling(SRIS)algorithm.The algorithm utilizes the ICPD model as well as the PRR set to select seeds.There are two phases in SRIS.One is the sampling phase,which utilizes the IC-PD model to generate the PRR set and a binary search algorithm to calculate the number of needed PRR sets.The other is the node selection phase,which uses a greedy coverage algorithm to select optimal seeds.Finally,Experiments on three real-world polar social network datasets demonstrate that SRIS outperforms the baseline algorithms in effectiveness.Especially on the Slashdot dataset,SRIS achieves 24.7% higher performance than the best-performing compared algorithm under the weighted cascade model when the seed set size is 25.

关键词： Positive influencemaximization polar relation information decay reverse influence sampling

Characterization of the microbial community response to replant diseases in peach orchards

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Journal of Integrative Agriculture 2023年第4期22卷 1082-1092页

作者： LI Wei-hua CHEN peng WANG yu-zhu LIU Qi-zhi Laboratory of Entomology and Nematology College of Plant ProtectionChina Agricultural UniversityBeijing 100193P.R.China State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of ZoologyChinese Academy of SciencesBeijing 100101P.R.China Key Laboratory of Natural Enemies Insects of Ministry of Agriculture and Rural Affairs Shandong Provincial Engineering Technology Research Center on Biocontrol of Crop Diseases and Insect PestInstitute of Plant ProtectionShandong Academy of Agricultural SciencesJinan 250100P.R.China Institute of Forestry and Pomology Beijing Academy of Agriculture and Forestry SciencesBeijing 100093P.R.China

This study attempted to monitor the development of microbial communities and reveal the correlation between the soil microbial community and soil nutrient factors over different years following the replanting of peach trees.The replanted soil(RS)and nonreplanted soil(NRS)were collected from peach orchards with different growth years(1,3,5,7,9,11,and 13 years)in the same region.The soil bacterial and fungal community diversities were analyzed by high-throughput sequencing technology.Redundancy analysis(RDA)was used to show the correlation between the soil microbial community and environmental variables.The alpha diversities of the bacterial and fungal communities indicated that RS contained a higher abundance of bacterial and fungal operational taxonomic units(OTUs)than NRS.NMDS and ANOSIM analyses showed that the soil bacterial and fungal communities were significantly(P3.0).In addition,the soil nutrient contents were lower in RS than in NRS in the early stage(1–5 years),and the RDA showed that bacterial and fungal phyla are closely associated with environmental variables,including the potential of hydrogen(pH),ammonium nitrogen(AN),available phosphorus(AP)and available potassium(AK).These results lead to a deeper understanding of the microbial responses to replanting in peach orchards.

关键词： replant disease complex syndrome microbial community high-throughput sequencing environmental variables

An Anomeric Base-Tolerant Ester of 8-Alkynyl-1-naphthoate for Gold(I)-Catalyzed Glycosylation Reaction

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Chinese Journal of Chemistry 2023年第11期41卷 1305-1312页

作者： Xiaojuan Zhang peng Xu Zhengbing Zhou Yazhou Zhang Biao yu yugen zhu Zhongshan Institute for Drug Discovery Shanghai Institute of Materia MedicaChinese Academy of SciencesZhongshanGuangdong528400 China Key Laboratory of Medicinal Chemistry for Natural Resource Ministry of EducationYunnan Provincial Center for Research&Development of Natural ProductsSchool of Chemical Science and TechnologyYunnan UniversityKunmingYunnan650091 China State Key Laboratory of Bioorganic and Natural Products Chemistry Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai200032 China

Given the extreme complexity and diversity of carbohydrates,efficient approaches to the homogeneous oligosaccharide remain limited.Chemical synthesis represents one of the most reliable methods to access homogeneous samples,which mainly relies on the key glycosylation reaction.Consistent with enormous efforts to develop leaving groups for establishing robust glycosylation protocols,we herein disclose a structurally novel leaving group of 8-phenylethynyl-1-naphthoate that is able to enable efficient glycosylation reactions under the extremely mild condition of gold(I)-catalysis.Notably,the anomeric naphthoate possesses the unprecedent character of base-stability in sharp contrast to the conventional ester groups at anomeric position of carbohydrates,which endows high compatibility with a variety of chemical transformations.Furthermore,the present glycosylation protocol with 8-phenylethynyl-1-naphthoate as leaving group is able to realize minimally protected glycosylation processes.Mechanistic studies reveal a unique structure of 8-phenylethynyl-1-naphthoate that accounts for the reason for these characteristics.

关键词： Glycosylation Leaving Group Gold Catalysis Anomeric Ester Base Tolerant Carbohydrates

Tactile perception of textile fabrics based on friction and brain activation

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Friction 2023年第7期11卷 1320-1333页

作者： Wei TANG Shousheng ZHANG Chuang yu Hua zhu Si CHEN yuxing peng School of Mechatronic Engineering China University of Mining and TechnologyXuzhou 221116China Fluid Machinery Center Jiangsu UniversityZhenjiang 212013China

Tactile perception plays a critical role in the interaction of humans and environment.It begins with the mechanical stimulation induced by friction and is processed in the somatosensory cortex.To quantify the tactile perceptions of textile fabrics,the mechanical properties of fabrics and the features extracted from the friction and vibration signals were correlated with the subjective sensation rated by questionnaires.Meanwhile,the technique of functional magnetic resonance imaging(fMRI)was used to identify the brain areas responsible for the tactile perception of textile fabrics.The results showed that during the tactile perception of textile fabrics,the coefficient of friction increased with the increasing normal load,indicating that the deformation mechanism of skin was relevant to the friction of skin against fabrics.The features of spectral centroid(SC),coefficient of friction,and diameter and critical buckling force of fiber had a strong correlation with the perceived fineness,slipperiness,and prickliness of fabrics,respectively.The postcentral gyrus,supramarginal gyrus,and precentral gyrus,with the corresponding functional regions of the primary somatosensory cortex(SI),secondary somatosensory cortex(SII),primary motor cortex(MI),and secondary motor cortex(MII),were involved with the perceptions of fabric textures.The fiber properties and fabric surface structures that caused the multidimensional feelings tended to induce the large area,intensity,and percent signal change(PSC)of brain activity.This study is meaning for evaluating the tactile stimulation of textile fabrics and understanding the cognitive mechanism in the tactile perception of textile fabrics.

关键词： tactile perception friction brain activation characteristic features textile fabric

Tandem cyclization/arylation of diaryliodoniums via in situ constructed benzoxazole as a directing group for atom-economical transformation

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Organic Chemistry Frontiers 2022年第4期9卷 1137-1142页

作者： Hui peng Qian Liu Yameng Sun Bingling Luo Tianyian yu peng Huang Daqian zhu Shijun Wen State Key Laboratory of Oncology in South China Collaborative Innovation Center for Cancer MedicineSun Yat-sen University Cancer Center651 Dongfeng East RoadGuangzhou 510060People’s Republic of China School of Pharmacy Guangdong Pharmaceutical University280 Waihuan East RoadGuangzhou 510006People’s Republic of China

Linear diaryliodoniums often undergo only single arylation and leave equivalent aryl iodide as waste.Herein,we demonstrate that linear unsymmetrical diaryliodoniums could be tuned by a dual nickel/palla-dium metal system to accomplish one-pot cyclization/arylation.Of note,the in situ generated benzox-azole motifs could then be utilized as directing groups for subsequent C–H activated arylation from the often unwanted aryl iodide,exhibiting good reactions with atom economy and regioselectivity.

关键词： cyclization iodide nickel

Inhomogeneous strain and doping of transferred CVD-grown graphene

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Rare Metals 2022年第5期41卷 1727-1734页

作者： yu-Ting Niu Fang-zhu Qing Xue-Song Li Bo peng National Engineering Research Center of Electromagnetic Radiation Control Materials University of Electronic Science and Technology of ChinaChengdu 611731China State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of ChinaChengdu 611731China School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaChengdu 611731China Shenzhen Institute for Advanced Study University of Electronic Science and Technology of ChinaShenzhen 518110China

Chemical vapor deposition(CVD)-grown graphene on copper foils is subject to the Cu substrate, which affects the spatial distribution of strain and doping, thus influencing the electronic properties of graphene. However, plenty of electronic devices based on CVD-grown graphene require transfer process and the distribution of doping and strain in CVD-grown graphene transferred onto the insulating substrates remains elusive.

关键词： graphene transferred strain

High-chromium vanadium-titanium magnetite all-pellet integrated burden optimization and softening-melting behavior based on flux pellets

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International Journal of Minerals,Metallurgy and Materials 2024年第3期31卷 498-507页

作者： Bojian Chen Tao Jiang Jing Wen Guangdong Yang Tangxia yu Fengxiang zhu peng Hu School of Metallurgy Northeastern UniversityShenyang 110819China Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education) Northeastern UniversityShenyang 110819China Liaoning Key Laboratory for Metallurgical Sensor and Technology Shenyang 110819China State key laboratory of vanadium and titanium resources comprehensive utilization Panzhihua 617000China

High-chromium vanadium-titanium magnetite(HVTM)is a crucial polymetallic-associated resource to be developed.The allpellet operation is a blast furnace trend that aims to reduce carbon dioxide emissions in the future.By referencing the production data of vanadium-titanium magnetite blast furnaces,this study explored the softening-melting behavior of high-chromium vanadium-titanium magnetite and obtained the optimal integrated burden based on flux pellets.The results show that the burden with a composition of 70wt%flux pellets and 30wt%acid pellets exhibits the best softening-melting properties.In comparison to that of the single burden,the softening-melting characteristic temperature of this burden composition was higher.The melting interval first increased from 307 to 362℃and then decreased to 282℃.The maximum pressure drop(ΔPmax)decreased from 26.76 to 19.01 kPa.The permeability index(S)dropped from 4643.5 to 2446.8 kPa·℃.The softening-melting properties of the integrated burden were apparently improved.The acid pellets played a role in withstanding load during the softening process.The flux pellets in the integrated burden exhibited a higher slag melting point,which increased the melting temperature during the melting process.The slag homogeneity and the TiC produced by over-reduction led to the gas permeability deterioration of the single burden.The segregation of the flux and acid pellets in the HVTM proportion and basicity mainly led to the better softening-melting properties of the integrated burden.

关键词： high-chromium vanadium-titanium magnetite softening-melting properties all pellets integrated burden flux pellets