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Acta Mathematicae Applicatae Sinica 2012年第2期28卷 289-304页

作者： wan-sheng wang Shou-fuLI Run-sheng YANG School of Mathematics and Computational Science Changsha University of Science ＆ Technology Yuntang Campus Changsha 410114 China School of Mathematics and Computational Sciences Xiangtan University Xiangtan 411105 China

A series of eontractivity and exponential stability results for the solutions to nonlinear neutral functional differential equations （NFDEs） in Banach spaces are obtained, which provide unified theoretical foundation for the contractivity analysis of solutions to nonlinear problems in functional differential equations （FDEs）, neutral delay differential equations （NDDEs） and NFDEs of other types which appear in practice.

关键词： nonlinear neutral functional differential equations contractivity exponential stability~ Banachspaces

Subsequent Treatment after Transarterial Chemoembolization Failure/Refractoriness: A Review Based on Published Evidence

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Journal of Clinical and Translational Hepatology 2022年第4期10卷 740-747页

作者： Shen Zhang wan-sheng wang Bin-Yan Zhong Cai-Fang Ni Department of Interventional Radiology The First Affiliated Hospital of Soochow UniversitySuzhouJiangsuChina

Transarterial chemoembolization(TACE)is widely applied for the treatment of hepatocellular *** TACE is often required in clinical practice because a satisfactory tumor response may not be achieved with a single ***,repeated TACE procedures can impair liver function and increase treatment-related adverse events,all of which prompted the introduction of the concept of“TACE failure/refractoriness”.Mainly based on evidence from two retrospective studies conducted in Japan,sorafenib is recommended as the first choice for subsequent treatment after TACE failure/*** studies have investigated the outcomes of other subsequent treatments,including locoregional,other molecular targeted,anti-programmed death-1/anti-programed death ligand-1 therapies,and combination therapies after TACE failure/*** this review,we summarize the up-to-date information about the outcomes of several subsequent treatment modalities after TACE failure/refractoriness.

关键词： Transarterial chemoemboization Failure Refractoriness Subsequent treatment

Quasiparticle interference testing the possible pairing symmetry in Sr2RuO4

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Chinese Physics B 2020年第6期29卷 456-461页

作者： Cong-Cong Zhang Jin-Hua Sun Yang Yang wan-sheng wang Department of Physics Ningbo UniversityNingbo 315211China College of Physics and Electronic Engineering Zhengzhou University of Light IndustryZhengzhou 450002China School of Engineering Lishui UniversityLishui 323000China

The quasiparticle interference(QPI)patterns of the superconducting state in Sr2RuO4 are theoretically studied by taking into account the spin–orbital coupling and two different pairing modes,chiral p-wave pairing and equal d-wave pairing,in order to propose an experimental method to test *** of the QPI spectra for the two pairing modes have clearly peaks evolving with energy,and their locations can be determined from the tips of the constant energy *** the number,location,and evolution of these peaks with energy are different between the two pairing *** different behaviors of the QPI patterns in these two pairing modes may help to resolve whether Sr2RuO4 is a chiral p-wave or d-wave superconductor.

关键词： Sr2RuO4 quasiparticle interference chiral p-wave d-wave

Kondo screening cloud in a superconductor with mixed s-wave and p-wave pairing states

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Chinese Physics B 2022年第10期31卷 478-487页

作者： Zhen-Zhen Huang Xiong-Tao Peng wan-sheng wang Jin-Hua Sun School of Physical Science and Technology Ningbo UniversityNingbo 315211China

We study the Kondo screening of a spin-1/2 magnetic impurity coupled to a superconductor,which is fabricated by combination of an s-wave superconductor,a ferromagnet and a semiconductor with Rashba spin-orbit coupling(RSOC).The proximity induced superconducting states include the s-wave and p-wave pairing components with the aids of RSOC,and the ferromagnet induces a Zeeman field which removes the spin degeneracy of the quasiparticles in the triplet ***,the Kondo screening of magnetic impurity involves the orbital degrees of freedom,and is also affected by the Zeeman *** the variational method,we calculate the binding energy and the spin-spin correlation between the magnetic impurity and the electrons in the coexisting s-wave and p-wave pairing *** find that Kondo singlet forms more easily with stronger RSOC,but Zeeman field in general decreases the binding *** spin-spin correlation decays fast in the vicinity of the magnetic *** to the RSOC,the spatial spin-spin correlation becomes highly anisotropic,and the Zeeman field can induce extra asymmetry to the off-diagonal components of the spin-spin *** study can offer some insights into the studies of extrinsic topological superconductors fabricated from the hybrid structures containing chains of magnetic impurities.

关键词： Kondo effect Rashba spin-orbit couplings p-wave superconductors Anderson model

Transarterial chemoembolization failure/refractoriness: A scientific concept or pseudo-proposition

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World Journal of Gastrointestinal Surgery 2022年第6期14卷 528-537页

作者： Shen Zhang Bin-Yan Zhong Lei Zhang wan-sheng wang Cai-Fang Ni Department of Interventional Radiology The First Affiliated Hospital of Soochow UniversitySuzhou 215006Jiangsu ProvinceChina

Multi-session transarterial chemoembolization(TACE)is usually needed for the treatment of intermediate-stage hepatocellular carcinoma(HCC),but it may not always have a positive influence on prognosis due to high heterogeneity of *** avoid ineffective repeated TACE,the concept of TACE failure/refractoriness has been proposed by several organizations and is being addressed using tyrosine kinase *** concept of TACE failure/refractoriness is controversial due to ambiguous definitions and low evidence-based *** date,only a few studies have examined the rationality concerning the definition of TACE failure/refractoriness,although the concept has been introduced and applied in many TACE-related clinical *** review focuses on some of the issues related to different versions of TACE failure/refractoriness,the rationality of related definitions,and the feasibility of continuing TACE after so-called failure/refractoriness based on published evidence.A suggestion to re-define TAEC failure/refractoriness is also put forward.

关键词： Hepatocellular carcinoma Transarterial chemoembolization Failure Refractoriness

Development of re-crosslinkable dispersed particle gels for conformance improvement in extremely high-temperature reservoirs

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Petroleum Science 2022年第6期19卷 2922-2931页

作者： Dao-Yi Zhu Run-Tian Luo Yang Liu Jun-Hui Qin Qi Zhao Hong-Jun Zhang wan-sheng wang Zi-Yuan wang Meng-En Zhu Yi-Peng wang Peng-Bo Li China University of Petroleum-Beijing at Karamay Karamay 834000XinjiangChina

Micro-scale and nano-scale dispersed gel particles(DPG)are capable of deep migration in oil reservoirs due to their deformability,viscoelasticity,and suitable particle ***,it has been widely studied and applied in reservoir conformance control in recent ***,for highly permeable channels,their plugging performance is still *** addition,conventional in situ cross-linked polymer gels(ISCPGs)have fast gelation time under extremely high-temperature conditions,which often causes problems such as difficulty in ***,a re-cross linkable dispersed particle gel(RDPG)system applied for conformance control in highly permeable channels of extremely high-temperature petroleum reservoirs was *** particle size distribution,gelation time,gel strength,injection performance,and perfo rmance strength in po rous media were investigated using a laser particle size meter,the Sydansk bottle test method,rheometer,and core displacement experiments,*** show that the RDPG suspension can be stable for more than 6 months at room temperature with storage modulus G’much lower than 10 *** can pass through the pore throat by elastic deformation effect and does not cause strong ***,it can undergo re-crosslinking reaction at 150℃to form a strong bulk *** gel strength G’of re-crosslinked RDPG can be as high as 69.3 Pa,which meets the strength requirement of conformance *** RDPG suspension has the properties of easy injection,and it also has strong plugging,and high-temperature resistance after re-crosslinked in the core,which can be a very promising material for conformance improvement in extremely high-temperature reservoirs.

关键词： Dispersed particle gel Re-crosslinking Conformance improvement High-temperature petroleum reservoir Injection performance

Electrochemical synthesis of trimetallic nickel-iron-copper nanoparticles via potential-cycling for high current density anion exchange membrane water-splitting applications

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Journal of Energy Chemistry 2024年第2期89卷 535-542,I0012页

作者： Ziqi Zhang sheng wan Hanbo wang Jinghan He Ruige Zhang Yuhang Qi Haiyan Lu State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012JilinChina

Hydrogen is known for its elevated energy density and environmental compatibility and is a promising alternative to fossil *** water electrolysis utilizing renewable energy sources has emerged as a means to obtain high-purity ***,electrocatalysts used in the process are fabricated using conventional wet chemical synthesis methods,such as sol-gel,hydrothermal,or surfactantassisted approaches,which often necessitate intricate pretreatment procedures and are vulnerable to post-treatment ***,this study introduces a streamlined and environmentally conscious one-step potential-cycling approach to generate a highly efficient trimetallic nickel-iron-copper electrocatalyst in situ on nickel *** synthesized material exhibited remarkable performance,requiring a mere 476 mV to drive electrochemical water splitting at 100 mA cm^(-2)current density in alkaline ***,this material was integrated into an anion exchange membrane watersplitting device and achieved an exceptionally high current density of 1 A cm^(-2)at a low cell voltage of2.13 V,outperforming the noble-metal benchmark(2.51 V).Additionally,ex situ characterizations were employed to detect transformations in the active sites during the catalytic process,revealing the structural transformations and providing inspiration for further design of electrocatalysts.

关键词： Electrocatalytic water splitting Hydrogen evolution reaction Oxygen evolution reaction Electrochemical synthesis Anion exchange membrane

Synthesis,Characterization of Polyethylene Ionomers and Their Antibacterial Properties

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Chinese Journal of Polymer Science 2024年第8期42卷 1077-1084页

作者： Jia-Jia Wu Fei wang Peng-Qi wan Li Pan Chun-sheng Xiao Zhe Ma Yue-sheng Li Tianjin Key Lab Composite&Functional Materials School of Materials Science and EngineeringTianjin UniversityTianjin 300350China Key Lab Polymer Ecomaterials Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China

Owing to its high production volume and wide range of application s,polyethylene has gained a great deal of attention,but its low surface energy and non-polar nature have limited its application in some important *** this study,ethylene/11-iodo-1-undecene copolymers were prepared and used as the intermediates to afford a series of imidazolium-based ionomers bearing methanesulfonate(CH_(3)SO_(3)^(-)),trifluoromethanesulfonate(CF_(3)SO_(3)^(-)),or bis(trifluoromethane)sulfonimide(Tf_(2)N^(-))*** tensile test results showed that the stress-at-break(7.8-25.6 MPa)and the elongation-at-break(445%-847%)of the ionomers could be adjusted by changing the counterion species and the ionic group *** importantly,the ionomers exhibited marvelous antibacterial activities against Staphylococcus aureus(***)and Escherichia coli(***).The ionomers bearing Tf_(2)N^(-)exhibited antibacterial activities>99%against both *** and *** when ionic content reached 9.1%.The imidazolium-based ionomers prepared in this work demonstrated excellent comprehensive properties,especially highefficient and broad-spectrum antibacterial ability,exhibiting the potential fo r the application as the antibacterial materials in packaging,medical,and other fields.

关键词： Polyethylene Ionomer Polymerization catalysis Imidazolium Antibacterial material

Evaluating changes in business distribution within urban rail transit hubs in Beijing via Point of Interest (POI) data analysis (2008-2020)

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Frontiers of Architectural Research 2024年第2期13卷 305-318页

作者： Bo wan Dongyang wan Qiang sheng School of Architecture and Design Beijing Jiaotong UniversityBeijing 100044China

This paper,set against the backdrop of expanding urban rail networks and dynamic urban development,focuses on the distribution and evolution of commercial Points of Interests(POIs)within the central urban rail transit areas of *** study examines data from four different years-2008,2013,2017,and 2020-to observe the temporal evolution of commercial *** identifies stable explanatory variables affecting the distribution and evolution of commercial POIs,which include rail transit accessibility,characteristics of the working and residential population distribution around stations,and the construction intensity in the vicinity of station *** statistical analysis and model building,relatively stable linear regression equations were established,with R2 values generally maintained above 0.5(except for 2017).The study advances our understanding of the influence of rail transit on urban commercial spaces and how this influence shifts with temporal and urban developmental *** elucidates the correlation between changes in the number of businesses and spatial configuration,offering insights and information for urban planners and policy *** research also serves as a model for exploring the interplay between urban rail transit and commercial spaces in other major cities.

关键词： Urbanrail transit areas Spatial configuration Distributionand evolution of commercial POls

Research on feed-pulse collaborative control method in micro-electrical discharge machining

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Advances in Manufacturing 2024年第2期12卷 270-287页

作者： Qiang Gao Ya-Ou Zhang Xue-Cheng Xi Yuan-Ding wang Xiao-Fei Chen wan-sheng Zhao School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai200240People’s Republic of China State Key Laboratory of Mechanical System and Vibration Shanghai200240People’s Republic of China Shanghai Institute of Space Propulsion Shanghai201112People’s Republic of China

Reducing the short-circuit rate and increasing the effective discharge rate are important targets for improving the servo control effect of micro-electrical discharge machining(micro-EDM),as these two indicators are closely related to the machining efficiency and *** this study,a feed-pulse collaborative control(FPCC)method is proposed for micro-EDM based on two dimensions(space and time).In the spatial dimension,a feed control strategy with a discharge holding process is ***,in the time dimension,a forward-looking pulse control strategy is adopted,in which the pulse interval is adjusted based on a sequence analysis of feed commands and discharge *** experiments are carried out to determine the key parameters used in this method,including the discharge holding threshold and pulse interval adjustment value(T_(off_(adj))).The feed smoothness and discharge sufficiency analyses of the experimental results show that compared to the traditional double threshold average voltage method,the FPCC method reduces the number of long-distance retreats by 64%and improves the effective discharge time by 40%.

关键词： Micro-electrical discharge machining(micro-EDM) Electrode feed control Discharge pulse control Machining surface quality