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Infinitely many nonlocal symmetries and nonlocal conservation laws of the integrable modified KdV-sine-Gordon equation

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Communications in Theoretical Physics 2021年第5期73卷 18-24页

作者： Zu-feng Liang xiao-yan tang Wei Ding Department of Physics Hangzhou Normal UniversityHangzhou 10036China School of Mathematical Sciences Shanghai Key Laboratory of PMMPEast China Normal UniversityShanghai 200062China School of Computer Science and Technology Shanghai Normal UniversityShanghai 200234China

Nonlocal symmetries related to the B?cklund transformation(BT)for the modified KdV-sine-Gordon(mKdV-SG)equation are obtained by requiring the mKdV-SG equation and its BT form invariant under the infinitesimal *** through the parameter expansion procedure,an infinite number of new nonlocal symmetries and new nonlocal conservation laws related to the nonlocal symmetries are ***,several new finite and infinite dimensional nonlinear systems are presented by applying the nonlocal symmetries as symmetry constraint conditions on the BT.

关键词： Nonlocal conservation law The modified KdV-sine-Gordon equation Nonlocal symmetry

High-dimensional nonlinear variable separation solutions and novel wave excitations for the(4+1)-dimensional Boiti-Leon-Manna-Pempinelli equation

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Communications in Theoretical Physics 2024年第11期76卷 1-11页

作者： Zu-feng Liang xiao-yan tang Wei Ding Department of Physics Hangzhou Normal UniversityHangzhou 310036China School of Mathematical Sciences Key Laboratory of Mathematics and Engineering Applications(Ministry of Education)&Shanghai Key Laboratory of PMMPEast China Normal UniversityShanghai 200241China School of Computer Science and Technology Shanghai Normal UniversityShanghai 200234China

Considering the importance of higher-dimensional equations that are widely applied to real nonlinear problems,many(4+1)-dimensional integrable systems have been established by uplifting the dimensions of their corresponding lower-dimensional integrable ***,an integrable(4+1)-dimensional extension of the Boiti-Leon-Manna-Pempinelli(4DBLMP)equation has been proposed,which can also be considered as an extension of the famous Korteweg-de Vries equation that is applicable in fluids,plasma physics and so *** is shown that new higher-dimensional variable separation solutions with several arbitrary lowerdimensional functions can also be obtained using the multilinear variable separation approach for the 4DBLMP *** addition,by taking advantage of the explicit expressions of the new solutions,versatile(4+1)-dimensional nonlinear wave excitations can be *** an illustration,periodic breathing lumps,multi-dromion-ring-type instantons,and hybrid waves on a doubly periodic wave background are discovered to reveal abundant nonlinear structures and dynamics in higher dimensions.

关键词： (4+1)-dimensional Boiti-Leon-Manna-Pempinelli equation variable separation solution periodic breathing lumps multi-dromion-ring-type instanton hybrid waves on a doubly periodic wave background

The clinical phenotype and genotype of NLRP12-autoinflammatory disease: a Chinese case series with literature review

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World Journal of Pediatrics 2020年第5期16卷 514-519页

作者： Wei Wang Yu Zhou Lin-Qing Zhong Zhuo Li Shan Jian xiao-yan tang Hong-Mei Song Department of Pediatrics Peking Union Medical College HospitalChinese Academy of Medical SciencesBeijingChina School of Medicine Tsinghua UniversityBeijingChina

Background The nucleotide-binding oligomerization domain-like receptor protein 12(NLRP12)-autoinflammatory disorder(NLRP12-AD)is a rare autoinflammatory disease characterized by recurrent fever,rash as well as musculoskeletal symptoms,which is rarely reported in Asian *** Three cases of NLRP12-AD presented to our hospital were studied after parental consents were *** presentations were recorded on a standardized case report *** of NLRP12 were detected by primary immunodeficiency disease panels and further examined by Sanger *** literature search for relevant studies of systemic autoinflammatory disorders,especially NLRP12-AD between January,2000 and January,2019 was carried and the clinical data were *** were made between groups in terms of onset age and of *** All our patients presented with fever,rash and arthritis/arthralgia,and sensorineural as well as sensorineural deafness(1/3),uveitis(1/3),abdominal pain(1/3),and myalgia(1/3).Two novel mutation variations,p.W581X and p.L558R,are reported *** addition,we also found that two patients inherited the mutated alleles from their healthy parents,and this may be evidence of *** Although the genotypes are similar,the clinical manifestations between Chinese patients and Western patients vary thus highlighting the possible influence of ethnic and environmental *** the other hand,some genetic mutations may lead to specific phenotype,as we have found a high prevalence of sensorineural hearing loss among p.R284X patients.

关键词： Autoinflammatory disease NLRP12-AD Recurrent fever

Temperature-Dependent Effect of Near-Interface Traps on SiC MOS Capacitance

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Chinese Physics Letters 2018年第10期35卷 77-80页

作者： yan-Jing He xiao-yan tang Yi-Fan Jia Ci-Qi Zhou Yu-Ming Zhang Microelectronics Institute Xidian University

A two-dimensional electrical SiC MOS interface model including interface and near-interface traps is established based on the relevant tunneling and interface Shockley–Read–Hall model. The consistency between simulation results and measured data in the different temperatures shows that this interface model can accurately describe the capture and emission performance for near-interface oxide traps, and can well explain the hysteresis-voltage response with increasing temperature, which is intensified by the interaction between deep oxide traps and shallow oxide traps. This also indicates that the near-interface traps result in an increase of threshold-voltage shift in SiC MOSFET with increasing temperature.

关键词： MOS Temperature-Dependent Effect of Near-Interface Traps on SiC MOS Capacitance SiC

Human organoids in basic research and clinical applications

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Signal Transduction and Targeted Therapy 2022年第6期7卷 2010-2026页

作者： xiao-yan tang Shanshan Wu Da Wang Chu Chu Yuan Hong Mengdan Tao Hao Hu Min Xu Xing Guo yan Liu Institute for Stem Cell and Neural Regeneration School of PharmacyState Key Laboratory of Reproductive MedicineKey Laboratory of Targeted Intervention of Cardiovascular DiseaseCollaborative Innovation Center for Cardiovascular Disease Translational MedicineNanjing Medical UniversityNanjingChina Department of Neurobiology School of Basic Medical SciencesNanjing Medical UniversityNanjingChina

Organoids are three-dimensional(3D)miniature structures cultured in vitro produced from either human pluripotent stem cells(hPSCs)or adult stem cells(AdSCs)derived from healthy individuals or patients that recapitulate the cellular heterogeneity,structure,and functions of human *** advent of human 3D organoid systems is now possible to allow remarkably detailed observation of stem cell morphogens,maintenance and differentiation resemble primary tissues,enhancing the potential to study both human physiology and developmental *** they are similar to their original organs and carry human genetic information,organoids derived from patient hold great promise for biomedical research and preclinical drug testing and is currently used for personalized,regenerative medicine,gene repair and transplantation *** recent decades,researchers have succeeded in generating various types of organoids mimicking in vivo ***,we provide an update on current in vitro differentiation technologies of brain,retinal,kidney,liver,lung,gastrointestinal,cardiac,vascularized and multi-lineage organoids,discuss the differences between PSC-and AdSC-derived organoids,summarize the potential applications of stem cell-derived organoids systems in the laboratory and clinic,and outline the current challenges for the application of organoids,which would deepen the understanding of mechanisms of human development and enhance further utility of organoids in basic research and clinical studies.

关键词： organs clinical generating

Temperature-dependent chloride-mediated access to atom-precise silver thiolate nanoclusters

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Science China Chemistry 2022年第6期65卷 1094-1099页

作者： Ling yang Xin-Yao Wang xiao-yan tang Meng-Yi Wang Chun-yan Ni Hong Yu Ying-Lin Song Brendan F.Abrahams Jian-Ping Lang College of Chemistry Chemical Engineering and Materials ScienceSoochow UniversitySuzhou215123China School of Materials Engineering Changshu Institute of TechnologyChangshu215500China School of Physical Science and Technology Soochow UniversitySuzhou215006China School of Chemistry University of MelbourneParkvilleVictoria3010Australia

By using a unique temperature-dependent,chloride-mediated approach,two atom-precise silver nanoclusters[Cl@Ag_(14)(Tab)_(12)-(C_(5)H_(4)NCl)_(12)](PF_(6))_(13)(Cl@Ag_(14))and[Cl_(3)@Ag_(24)(Tab)_(20)(C_(5)H_(4)NCl)_(11)]Cl(PF_(6))_(20)(Cl_(3)@Ag_(24))(Tab=4-(trimethylammonio)benzenethiolate,C_(5)H_(4)NCl=3-chloropyridine)were obtained ***,the number of chloride ions encapsulated inside the Ag-S shell could be regulated by the slow dissolution of almost insoluble KCl at various *** inclusion of additional core chloride ions results in the expansion of the surrounding Ag-S *** article provides a promising synthetic approach for controlling the number of Ag atoms that form a shell around the anionic core,in addition to offering a potential pathway for the introduction of other inorganic anions into silver *** broadly,through the use of related ligands,the synthetic strategy offers scope for generating new families of silver thiolate clusters of varying size and composition.

关键词： temperature-dependent chloride-mediated core expansion silver thiolate nanocluster transformation

Hysteresis effect in current–voltage characteristics of Ni/n-type 4H-SiC Schottky structure

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Chinese Physics B 2019年第11期28卷 316-321页

作者： Hao Yuan Qing-Wen Song Chao Han xiao-yan tang xiao-Ning He Yu-Ming Zhang Yi-Men Zhang School of Microelectronics Xidian UniversityXi’an 710071China

Hysteresis current–voltage(Ⅰ–Ⅴ) characteristics are often observed in a highly non-ideal(n > 2) as-deposited nickel(Ni)/4 H-SiC Schottky contact. However, we find that this kind of hysteresis effect also exists in an as-deposited Ni/n-type4 H-SiC Schottky structure even if the ideality factor(n) is less than 1.2. The hysteresis Ⅰ–Ⅴ characteristics is studied in detail in this paper by using the various measurements including the hysteresis Ⅰ–Ⅴ, sequentialⅠ–Ⅴ sweeping, cycle Ⅰ–Ⅴ,constant reverse voltage stress(CRVS). The results show that the hysteresis Ⅰ–Ⅴ characteristics are strongly dependent on the sweeping voltage and post-deposition annealing(PDA). The high temperature PDA(800℃) can completely eliminate this hysteresis. Meanwhile, the magnitude of the hysteresis effect is shown to decrease in the sequential Ⅰ–Ⅴ sweeping measurement, which is attributed to the fact that the electrons tunnel from the 4 H-SiC to the localized states at the Ni/ntype 4 H-SiC interface. It is found that the application of the reverse bias stress has little effect on the emission of those trapped electrons. And a fraction of the trapped electrons will be gradually released with the time under the condition of air and with no bias. The possible physical charging mechanism of the interface traps is discussed on the basis of the experimental findings.

关键词： 4H-SiC Schottky hysteresis Ⅰ–Ⅴ Schottky barrier height

Simulation of SiC radiation detector degradation

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Chinese Physics B 2019年第1期28卷 300-305页

作者： Hai-Li Huang xiao-yan tang Hui Guo Yi-Men Zhang Yu-Tian Wang Yu-Ming Zhang School of Microelectronics Xidian University Key Laboratory of Wide Band-Gap Semiconductor Materials and Devices Xidian University

Simulation on the degradation of 4H-SiC Schottky detector was carried out using ISE TCAD, and the limit of the driftdiffusion analytical model was discussed. Two independent defect levels, rather than a pair of specific carrier lifetime, were induced to describe Z1/2 defects in simulation to calculate the charge collection efficiency versus bias voltage. Comparison between our calculation and the reported experimental results shows that an acceptable agreement was achieved, proving the feasibility of regarding Z1/2 defect as two individual defect levels. Such a treatment can simplify the simulation and may help to further investigate the detector degradation.

关键词： 4H-SiC detector degradation simulation Z1/2 defect

Multiple Darboux–B?cklund transformations via truncated Painleve′ expansion and Lie point symmetry approach

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Chinese Physics B 2018年第6期27卷 103-108页

作者： Shuai-Jun Liu xiao-yan tang Sen-Yue Lou Shanghai Key Laboratory of Trustworthy Computing East China Normal University Shanghai 200062 China Ningbo Collabrative Innovation Center of Nonlinear Harzard System of Ocean and Atmosphere and Faculty of Science Ningbo University Ningbo 315211 China

For a given truncated Painleve′ expansion of an arbitrary nonlinear Painleve′ integrable system, the residue with respect to the singularity manifold is known as a nonlocal symmetry, called the residual symmetry, which is proved to be localized to Lie point symmetries for suitable prolonged systems. Taking the Korteweg–de Vries equation as an example, the n-th binary Darboux–Ba¨cklund transformation is re-obtained by the Lie point symmetry approach accompanied by the localization of the n-fold residual symmetries.

关键词： residue symmetry multiple Darboux-Baicklund transformation Lie point symmetry approach