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Surface micro-arrays enhancing electromagnetic interference shielding of polydimethylsiloxane/multiwalled carbon nanotubes nanocomposites

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Nano Research 2025年第1期18卷 508-519页

作者： Ke Jiang Zhi Chen Ji Yu Chen Zheng Shan huang Ming Wang Chongqing Key Laboratory of Soft-Matter Material Manufacturing School of Chemistry and Chemical EngineeringSouthwest UniversityChongqing 400715China School of Mechanics Civil Engineering and ArchitecturesNorthwestern Polytechnical UniversityXi’an 710072China Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory(Rongjiang Laboratory) Jieyang 515200China

Herein,the electromagnetic shielding performance of surface concave-convex(SC)and zig-zag micro-arrays was studied by using a simulation prediction and a three-dimensional(3D)printing custom ***,surface stripe concaveconvex(SSC)and surface cylindrical concave-convex(SCC)micro-arrays with or without zig-zag micro-arrays are designed,and their shielding performance is simulated in multi-bands(C-,X-band).The multiwalled carbon nanotubes/polydimethylsiloxane composites(MWCNT/PDMS)with different SC structures and different electrical conductivity are molded in acrylonitrile-butadiene-styrene copolymer(ABS)molds which are printed by a 3D *** results show that the electromagnetic interference shielding effectiveness(EMI SE)of the samples can be enhanced by constructing the SC micro-arrays with zig-zag micro-arrays,and improving with the increase of conductivity and *** addition,the shielding mechanism of the SC-MWCNT/PDMS composites is investigated and discussed by an electromagnetic simulation.

关键词： surface micro-arrays electrical properties electromagnetic interference(EMI)shielding three-dimensional(3D)printing

Stationary Almost Markov ε-Equilibria for Discounted Stochastic Games with Borel Spaces and Unbounded Payoffs

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Journal of Systems Science & Complexity 2024年第4期37卷 1672-1684页

作者： WU Yiting ZhanG Junyu huang song School of Mathematics Sun Yat-Sen UniversityGuangzhou 510275China School of Software and Microelectronics Peking UniversityBeijing 100871China

This paper is concerned with nonzero-sum discrete-time stochastic games in Borel state and action spaces under the expected discounted payoff *** payoff function can be *** transition probability is a convex combination of finite probability measures that are dominated by a probability measure on the state space and depend on the state *** suitable conditions,the authors establish the existence of stationary almost Markov ε-equilibria and give an approximation method via some stochastic games with bounded ***,a production game is introduced to illustrate the applications of the main result,which generalizes the bounded payoff case.

关键词： Almost Markovε-equilibrium Borel state space expected discounted payoff criterion nonzero-sum stochastic games unbounded payoffs

Noninvasive beam diagnosis based on the TM_(010)mode

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Nuclear Science and Techniques 2024年第7期35卷 115-125页

作者： Chuang-Ye song Wen-Hui huang Department of Engineering Physics Tsinghua University BeijingBeijing100084China of Education Beijing100084China

A resonant cavity based on the TM_(010)mode is an effective tool for noninvasive beam characterization. This technique has the advantages of a high signal-to-noise ratio, compact structure, and is related to multiple parameters compared with other beam monitors. In this study, high-precision measurements of the bunch charge, arrival time, bunch length, and energy parameters based on the TM_(010)mode are discussed. A cavity beam arrival time monitor(BAM) utilizing a phase cavity has been widely used in many facilities. Regarding bunch-length measurements, the influence of the beam energy, beam offset,and longitudinal spectrum on the TM_(010)mode are carefully considered to reduce errors, and the theoretical resolution of two cavities with different frequencies is analyzed. Owing to the dependence of the beam velocity of the beam loss factor, this method can also be used for the detection low beam energy using two cavities with the same frequency but different cavity lengths. A set of three cavities with different lengths and frequencies of 1.902 and 11.424 GHz is presented for measuring the four aforementioned parameters.

关键词： TM_(010)mode Noninvasive diagnosis Beam length Low energy

Effects of Shenqi Xiangyi granules in advanced gastric cancer chemotherapy

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World Journal of Gastrointestinal Oncology 2025年第1期17卷 169-175页

作者： Xiao-Jing Shi Yu song Xue-Xue Liang Ting Chen huang-Yu Hao Xue han Ya-Nan Chen Department of Oncology Zhangjiagang First People's HospitalSuzhou 215600Jiangsu ProvinceChina

BACKGROUND Owing to the absence of specific symptoms in early-stage gastric cancer,most patients are diagnosed at intermediate or advanced *** a result,treatment often shifts from surgery to other therapies,with chemotherapy and targeted therapies being the primary options for advanced gastric cancer treatment.A total of 116 patients with advanced gastric cancer,admitted from January 2021 to December 2023,were selected and divided into two groups of 58 each using the random number table *** control group received FOLFOX4 chemothe-rapy(oxaliplatin+calcium+folinate+5-fluorouracil)combined with intravenous *** observation group received the same treatment as the control group,supplemented by oral administration of Senqi Shiyiwei *** groups underwent treatment cycles of 3 weeks,with a minimum of two *** therapeutic efficacy,immune mechanisms,and treatment-related toxicity and side effects were compared between the *** objective remission rate in the observation group(55.17%)was higher than that of the control group(36.21%)(P0.05).CONCLUSION Adjuvant therapy with Shenqixian granules may enhance the efficacy of simudizumab combined with FOLFOX4 chemotherapy in advanced gastric cancer and the immune function by increasing immune cell counts,making it a valuable option in clinical treatment.

关键词： Sindilizumab FOLFOX4 chemotherapy Advanced gastric cancer Ginseng Qi Xiangyi granule Clinic treatment

Research of the rapid pressure-strain correlation model in the rapid distortion limit

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Science China(Physics,Mechanics & Astronomy) 2008年第9期51卷 1380-1389页

作者： huang SiYuan FU song Department of Engineering Mechanics Tsinghua UniversityBeijing 100084China

Even though a number of rapid pressure-strain models have been suggested and successfully tested for different flow situations by various authors,the model proposals still exhibit some apparent deficiencies when subjected to the flows with rapid distortion. From Mansour's relatively straightforward rapid distortion analysis,if an initially anisotropic flow undergoes a purely rapid rotation,the anisotropy measures will exhibit the behavior of the damped oscillations. Within the current framework of modeling the rapid pressure-strain correlation,i.e.,the models based on the assumption that the M-tensor for the rapid pressure-strain term is expand-able in the Reynolds-stress anisotropy tensor alone,all the model predictions fail to give the damped oscillations in the turbulence anisotropy. In the case of initially isotropic turbulence subjected to rapid distortion,Sj?gren and Johansson showed that all the existing rapid pressure-strain models would deliver the identical path in the anisotropy-invariant map for both homogeneous plane strain and shear flows. The rapid distortion analysis shows two distinct curves reflecting different flow physics. In this work,we try to present a possible way to create a system that can overcome these deficiencies with the aid of the rapid distortion theory (RDT).

关键词： Reynolds-Stress turbulence Model rapid pressure-strain correlation rapid distortion theory

PSO-ACSC:a large-scale evolutionary algorithm for image matting

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Frontiers of Computer Science 2020年第6期14卷 31-42页

作者： Yihui LIANG han huang Zhaoquan CAI School of Computer Science University of Electronic Science and Technology of ChinaZhongshan InstituteZhongshan 528400China School of Software Engineering South China University of TechnologyGuangzhou 510006China Research Department Huizhou UniversityHuizhou 516007China

Image matting is an essential image processing technology due to its wide range of ***-based image matting is one of the main branches of image matting research that estimates alpha mattes by selecting the best pixel *** is essentially a large-scale multi-peak optimization problem of pixel *** study shows that particle swarm optimization(PSO)can effectively optimize the pixel ***,it still suffers from premature convergence problem which often occurs in pixel pair optimization that involves a large number of local *** address this problem,this work presents a parameter-free strategy for PSO called adaptive convergence speed controller(ACSC).ACSC monitors and conditionally controls the particles by competitive pixel pair recombination operator(CPPRO)and pixel pair reset operator(PPRO)during the *** performs CPPRO to improve the competitiveness of a particle when the performance of most of the pixel pairs is worse than that of the best-so-far *** is performed to avoid premature convergence when the alpha mattes regarding two selecleu particles ae liglly *** results show that ACSC significantly enhances the performance of PSO for image matting and provides competitive alpha mattes comparing with state-of-the-art evolutionary algorithms.

关键词： evolutionary computing particle swarm optimization large-scale optimization image matting

Fuzzy working state evaluating function and its algorithm for analogue circuits

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The Journal of China Universities of Posts and Telecommunications 2015年第1期22卷 83-88页

作者： huang Liang song Wei School of Electronic and Information Engineering Beijing Jiaotong University School of Information Engineering Minzu University of China

The working state （WS） evaluation is a valuable task in the process of failure diagnosis in the analogue circuits. A fuzzy evaluating algorithm was proposed to quantify the working condition of analogue circuit regarded as fuzzy system. Several familiar WS evaluating functions based on fuzzy membership functions were also proposed to calculate the local working state indexes （WSI） of each node in an analogue circuit. The decision function combined with the WS evaluating functions is used to synthesize all the local WSI to the global WSI of the whole circuit. An example was presented to verify that the working status of the analogue circuits can be described by the new WS evaluating algorithm and the global WSI objectively and accurately.

关键词： analogue circuit working state fuzzy theory membership function

Test of a low-mass contact binary model by comparing the relations obtained from theory with those from observations

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Science China(Physics,Mechanics & Astronomy) 2012年第4期55卷 706-716页

作者： song Fen huang RunQian Department of Astronomy Beijing Normal UniversityBeijing 100875China National Astronomical Observatories/Yunnan Observatory Chinese Academy of SciencesKunming 650011China Key Laboratory of the Structure and Evolution of Celestial Objects Chinese Academy of SciencesKunming 650011China

The W UMa-type contact binaries have been observed for several *** construct the evolutionary model for W UMa-type contact binaries,many difficulties were encountered due to the existence of complicated physical processes in such *** model introduced by huang,song and Bi includes some special and unique understandings of the physical processes of contact *** is necessary to test whether this model can be used for W UMa-type contact *** best way to test a theoretical model is to know whether this model can explain the observational phenomena of such *** this aim,a comparison is performed for the relations of mass-luminosity,mass-radius,and the distribution in the HR diagram obtained from the model introduced by huang et *** those from the astronomical *** result of the comparison indicates that this model can be applied to W UMa-type contact binaries and can explain the observational phenomena of such binaries.

关键词： binaries: close stars: evolution stars: fundamental parameters stars: rotation

The role of diffusion in the nucleation of calcium carbonate

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Chinese Journal of Chemical Engineering 2022年第3期35卷 275-281页

作者： Xiangyu Dou Haoyang huang Yongsheng han State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China College of Chemistry and Molecular Engineering Peking UniversityBeijing 100871China

Nucleation widely exists in nature,from cloud formation to haze *** classical nucleation theory(CNT)was created to describe the nucleation process,but it fails to predict many experimental phenomena due to the short consideration of nanoscale phenomena and macroscale *** the attachment and detachment of monomers are considered in the developed model of nucleation,the diffusion of chemicals in the bulk is not valued as supersaturation in the nucleation process so *** we employ simulation and experimental approaches to investigate how the diffusion of ions affects the nucleation of calcium *** diffusion of ions is regulated by the viscosity of solvents and the sonication imposed on the *** is found that the nucleation rates increased exponentially with the diffusion coefficient of ions,which is beyond the prediction of *** abnormal finding might be ascribed to the involvement of cluster aggregation in the nucleation of calcium *** study highlights the significance of chemical diffusion in the nucleation process,which may help to revise the nucleation theory and develop solutions for the rational synthesis of materials,as well as for the control of air pollution.

关键词： Calcium carbonate Nucleation Simulation Diffusion Dynamics