Si Yuan

ORCID: 0000-0002-2740-2806
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Research Areas
  • Numerical methods in engineering
  • Composite Structure Analysis and Optimization
  • Advanced Numerical Methods in Computational Mathematics
  • Electromagnetic Simulation and Numerical Methods
  • Advanced Numerical Analysis Techniques
  • Topology Optimization in Engineering
  • Structural Health Monitoring Techniques
  • Structural Load-Bearing Analysis
  • Fatigue and fracture mechanics
  • Hippo pathway signaling and YAP/TAZ
  • Elasticity and Wave Propagation
  • Electromagnetic wave absorption materials
  • Vibration and Dynamic Analysis
  • Differential Equations and Numerical Methods
  • Neuroendocrine Tumor Research Advances
  • Advanced Theoretical and Applied Studies in Material Sciences and Geometry
  • 2D Materials and Applications
  • Laser and Thermal Forming Techniques
  • Graphene research and applications
  • Metamaterials and Metasurfaces Applications
  • Spectroscopy Techniques in Biomedical and Chemical Research
  • Phytochemical Studies and Bioactivities
  • Spectroscopy and Chemometric Analyses
  • Bladed Disk Vibration Dynamics
  • Cerebrovascular and Carotid Artery Diseases

Guangzhou Medical University
2022-2025

Guangzhou First People's Hospital
2022-2025

Tsinghua University
2013-2024

Qingdao University
2023-2024

Hebei Medical University
2022-2024

Xingtai People's Hospital
2022-2024

State Power Investment Corporation (China)
2024

Second Hospital of Hebei Medical University
2022-2023

Qingdao Municipal Hospital
2023

Third People's Hospital of Yunnan Province
2023

Structural symmetry breaking, which could lead to exotic physical properties, plays a crucial role in determining the functions of system, especially for two-dimensional (2D) materials. Here, we demonstrate that multiple functionalities 2D chromium-based materials can be achieved by breaking inversion via replacing $Y$ atoms one face pristine $\mathrm{Cr}$Y (Y = $\mathrm{P}$, $\mathrm{As}$, $\mathrm{Sb}$) monolayers with $\mathrm{N}$ atoms, i.e., forming Janus ${\mathrm{Cr}}_{2}\mathrm{N}Y$...

10.1103/physrevapplied.18.014013 article EN Physical Review Applied 2022-07-07

International Journal of Computational MethodsAccepted Papers No AccessA direct maximum-norm error estimator for condensed elements with application to adaptive analysis first-order initial-value problemsQuan Yuan and Si YuanQuan Search more papers by this author https://doi.org/10.1142/S0219876225500021Cited by:0 (Source: Crossref) PreviousNext AboutFiguresReferencesRelatedDetailsPDF/EPUB ToolsAdd favoritesDownload CitationsTrack CitationsRecommend Library ShareShare onFacebookTwitterLinked...

10.1142/s0219876225500021 article EN International Journal of Computational Methods 2025-01-10

Objective The etiology and specific pathological mechanisms of keloids remain elusive. Array expression profiling has revealed dysregulation the transcription cofactor ankyrin repeat domain 1 (ANKRD1) in keloid fibroblasts. present study focused on examining pattern ANKRD1 assessing its function human fibroblasts (HKFs). Material Methods Differential mRNA profiles were investigated by analyzing data from gene omnibus (GEO) datasets. Immunohistochemistry assays performed to verify patterns...

10.25259/cytojournal_111_2024 article EN CytoJournal 2025-02-13

Abstract Ceramic cores doped with gadolinium oxide can perform neutron photographic examination of inner cavity residual hollow turbine blades containing complicated frameworks. This paper systematically investigates the performance silicon-based ceramic after adding Gd 2 O 3 . The experimental results indicate that increasing content cannot significantly affect cores’ room-temperature flexural strength and shrinkage. In contrast, it considerably influences high-temperature deflection. When...

10.1088/1742-6596/2956/1/012054 article EN Journal of Physics Conference Series 2025-03-01

Abstract Single crystal high-temperature alloy hollow blades are crucial components in aircraft engines, utilizing ceramic cores for their internal structure. Turbine blade designs have evolved from simple solid structures to complex and multi-layered wall structures. The fabrication of necessitates the use water-soluble cores. In this study, addition graphite powder enhances bending strength toughness while reducing linear shrinkage dissolution rates. Moreover, increasing particle size...

10.1088/1742-6596/2956/1/012049 article EN Journal of Physics Conference Series 2025-03-01

Abstract Y was added to DD5 superalloy, and the interface reaction between superalloy ceramic core at various positions on cast turbine blade studied using scanning electron microscopy, energy spectrum analysis, other methods. The study aimed investigate influence of this reaction. Results show that superalloys containing yttrium exhibit strong interfacial reactions with silicon-based cores, resulting in uniform products pits across entire surface blades. At local core-superalloy interface,...

10.1088/1742-6596/2956/1/012050 article EN Journal of Physics Conference Series 2025-03-01

Importance Neonatal seizures pose a significant challenge in critical care, and continuous video electroencephalography (cEEG) monitoring holds promise for early detection of seizures. However, large-scale data on the incidence neonatal systems China are lacking. Objectives To determine infants with high risk China. Design, Setting, Participants A large, cross-sectional multicenter study was conducted from January 2017 to December 2018 intensive care units (NICUs) 7 tertiary medical centers...

10.1001/jamanetworkopen.2023.26301 article EN cc-by-nc-nd JAMA Network Open 2023-07-28

Abstract When exact dynamic stiffness matrices are used to compute natural frequencies and vibration modes for skeletal certain other structures, a challenging transcendental eigenvalue problem results. The present paper presents newly developed, mathematically elegant computationally efficient method accurate reliable computation of both modes. can also be applied buckling problems. is first reduced generalized linear by using Newton's in the vicinity an frequency identified...

10.1002/nme.640 article EN International Journal for Numerical Methods in Engineering 2003-01-24

The finite element (FE) method has been widely used in predicting the structural responses of asphalt pavements. However, three-dimensional (3D) modeling general-purpose FE software systems such as ABAQUS requires extensive computations and is relatively time-consuming. To address this issue, a specific computational code EasyFEM was developed based on layer (FLM) for analyzing pavements under static load. Basically, it 3D that only one-dimensional (1D) mesh by incorporating analytical...

10.3390/app7060611 article EN cc-by Applied Sciences 2017-06-13

In this paper, the extended Kantorovich method originally proposed by Kerr is further to bending problem of rectangular Mindlin plates. A substantial extension made in study, addition employment theory, use multiterm trial functions. This eventually requires an iterative procedure at each iteration step which a set simultaneous ordinary differential equations (ODEs) must be solved. Despite state-of-the-art general-purpose ODE solver, supposed able solve derived system ODEs user specified...

10.1061/(asce)0733-9399(1998)124:12(1339) article EN Journal of Engineering Mechanics 1998-12-01

10.1016/s0022-460x(03)00126-3 article EN Journal of Sound and Vibration 2003-05-28

Purpose The purpose of this paper is to present a numerically adaptive finite element (FE) method for accurate, efficient and reliable eigensolutions regular second- fourth-order Sturm–Liouville (SL) problems with variable coefficients. Design/methodology/approach After the conventional FE solution an eigenpair (i.e. eigenvalue eigenfunction) particular order has been obtained on given mesh, novel strategy introduced, in which eigenproblem equivalently viewed as associated linear problem....

10.1108/ec-03-2017-0090 article EN Engineering Computations 2017-09-15

Cancer stem cells (CSCs) are closely related to tumor occurrence, development, metastasis, drug resistance, and recurrence. The role of CSCs in melanoma is poorly understood. Our previous studies suggested that the NOP14 nucleolar protein (NOP14) involved pathogenesis regulation. Importantly, overexpression inhibits Wnt/beta (β)-catenin signaling pathway, an important mechanism regulating stemness. Therefore, this study, we aimed explore stemness function vitro. CD133, a cell marker, was...

10.1080/21655979.2022.2050491 article EN Bioengineered 2022-03-01

Pancreatic ductal adenocarcinoma (PDAC) is a highly aggressive and lethal malignancy with limited response to current therapies. Novel effective treatment urgently needed. Herein, chimeric antigen receptor (CAR)-NK92 cell line, an interleukin (IL)-15Rα-sushi/IL-15 complex Programmed death-1(PD1) signal inverter was constructed named SP ( S ushi-IL15- P D1). We showed that CAR expression enabled cells proliferate independently of IL-2 became more resistant nutrition starvation-induced...

10.3389/fonc.2022.726985 article EN cc-by Frontiers in Oncology 2022-03-22

This paper presents a new adaptive finite element (FE) procedure for accurate, efficient, and reliable computation of the critical buckling loads associated modes nonuniform Bernoulli-Euler members. After conventional FE solution on given mesh has been obtained, novel conceptual practical strategy is introduced, in which eigenproblem equivalently viewed as an linear problem. allows recently developed energy projection (EEP) technique to be readily used calculate super-convergent solutions...

10.1155/2013/461832 article EN Mathematical Problems in Engineering 2013-01-01

The study aims to determine the seroprevalence of antibodies against tetanus among healthy people aged 1−59 years old in Shaanxi province. IgG serum samples were detected by ELISA. 6,439 subjects enrolled. positive rate (≥0.01 IU/mL) was 84.39% and GMC 0.03 IU/mL. There significant differences rates (χ2 = 308.944, p < 0.01) (Z 5,200,000, different age groups. 304.3, GMCs 146.417, showed regional differences. Both full protection (≥0.1 36.834, 688,000, increased with doses...

10.3390/vaccines10111806 article EN cc-by Vaccines 2022-10-26

Purpose This study aims to propose a general and efficient adaptive strategy with local mesh refinement for two-dimensional (2D) finite element (FE) analysis based on the energy projection (EEP) technique. Design/methodology/approach In view of inflexibility existing global dimension-by-dimension (D-by-D) recovery method via EEP technique, in which displacements are recovered through strips, an improved D-by-D was proposed, enables super-convergent be implemented mostly single element....

10.1108/ec-11-2018-0523 article EN Engineering Computations 2019-06-18

The association between the degree of plaque enhancement and ischemic brain stroke recurrence remains unclear. We aimed to establish models predict recurrence.Seventy-eight participants with acute due intracranial arterial stenosis were recruited divided into high (HE) non-HE groups. relationship imaging characteristics (degree stenosis, minimal lumen area, intraplaque hemorrhage, burden) contrast was analyzed. Inflammatory cytokine expression examined by flow cytometry. Independent...

10.1016/j.jstrokecerebrovasdis.2023.107406 article EN cc-by-nc-nd Journal of Stroke and Cerebrovascular Diseases 2023-10-12
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