A5100435126- Acoustic Wave Phenomena Research
- Vibration Control and Rheological Fluids
- Industrial Vision Systems and Defect Detection
- Cellular and Composite Structures
- Advanced machining processes and optimization
- Catalysis for Biomass Conversion
- Fluid Dynamics Simulations and Interactions
- Metamaterials and Metasurfaces Applications
- Railway Engineering and Dynamics
- Traffic and Road Safety
- Bacterial Identification and Susceptibility Testing
- Machine Fault Diagnosis Techniques
- Structural Analysis and Optimization
- Vibration and Dynamic Analysis
- Optical Wireless Communication Technologies
- Particle Accelerators and Free-Electron Lasers
- Vehicle Noise and Vibration Control
- Spectroscopy Techniques in Biomedical and Chemical Research
- GaN-based semiconductor devices and materials
- Financial Markets and Investment Strategies
- Phase-change materials and chalcogenides
- Nanomaterials for catalytic reactions
- Advanced Machining and Optimization Techniques
- Optical measurement and interference techniques
- Non-Destructive Testing Techniques
Xi'an Jiaotong University
2008-2025
Beijing Information Science & Technology University
2023
Purdue University West Lafayette
2012-2021
Tongji University
2021
Peking University
2020
State Key Laboratory of Millimeter Waves
2017
Southeast University
2017
University of California, Santa Cruz
2013
The increased production of biodiesel has resulted in the overproduction glycerol. Many researchers have begun investigating new uses for glycerol, including its conversion to fuel additives. In this paper, glycerol been reacted with furfural yield corresponding acetal. This condensation reaction is carried out under neat conditions 5-fold excess furfural, and a number homogeneous Lewis acids heterogeneous solid as catalysts. Reactions are routinely at 100 °C, allowing yields up 90%....
A major challenge in the fields such as civil, mechanical, and aerospace engineering is to obtain materials with lightweight, high stiffness, vibration reduction properties. This paper proposes a cylindrical metamaterial containing auxetic arrow units. The positive Poisson’s ratio triangular unit designed by varying edge length angle of unit, reinforced adding supporting within unit. static transmission rate, impact response metamaterials are analyzed finite element method (FEM). results...
Tunnel–bridge–tunnel groups (TBTGs) are emerging roads that often involve simple road alignments, but complex driving environments. Investigating crashes occurred in TBTGs is essential for revealing the environment–adaptability relationships such roads. This study seeks to analyze crash characteristics of component sections with different environments and compare impact differences key factor on crashes. After were defined through a proposed safety-critical distance metric determined via...
Phononic crystals (PCs) play an important role in the reduction of vibration within a targeted frequency range. Most research one-dimensional PCs focuses on properties or applications flexural band gaps; however, practically, broadband environmental excitations also induce torsional vibration. Hence, this paper studies two-degrees-of-freedom local resonance (2DOF-LR) phononic crystal, which can both suppress propagation and torsion waves same To improve computational efficiency, Timoshenko...
The development of coding and programmable metamaterials in the past three years is reviewed by Tie Jun Cui Shuo Liu article number 1700624, focusing primarily on basic concept, working principle, design method, fabrication, experimental validation. By presenting reflection-type, refraction-type, bifunctional metamaterials, convolution operations as well digitally their powerful manipulation capabilities to electromagnetic waves, are demonstrated.
The CNC machine tool is the passive executor of machining code. It cannot predict accuracy during machining. If error found to be out tolerance after processing, it will not only scrap parts, but also greatly affect processing efficiency. This phenomenon very prominent when sculptured surface parts with five-axis tools. Therefore, this paper proposes a Digital Twin (DT) modeling method tools for predicting Continuous Trajectory Contour Error (CTCE) caused by tracking errors and geometric...
The equivalent medium theory of metamaterials provides a way to obtain their effective constitutive parameters. However, because its non-reciprocity, the complexity electromagnetic coupling, and metallic bottom layer, it has been challenging retrieve them from metamaterial absorber. In this paper, we propose method without any approximation them, in which non-reciprocity strong coupling are included. Compared with three methods such as symmetric method, asymmetric metasurface our can reveal...
Inspired by innovative advancements in biomass valorization and the need for more environmentally benign polar aprotic solvents (PASs), a green catalytic process is described synthesis of N,N′-dimethylimidazolidinone (DMI) 1,3,4-trimethylimidazolidin-2-one (TMI) from cellulose, most abundant non-edible component biomass. The notable properties DMI TMI include high boiling points, remarkable chemical stability, being eco-friendly than frequently used PASs such as dimethylformamide. These make...
With the development of lighting technology, high-power white LEDs will become future mainstream technology. At present, there are still many problems in optical stability, reliability, heat dissipation. This paper focuses on properties vertical LEDs. The measurement results luminous flux output, correlated color temperature and coordinates blue after 1100 hours aging life testing under drive current 350 mA show us that LED changed from (0.3362,0.3700) to (0.3359,0.3698) shifts direction....
Based on four kinds of spectrograms, this paper studies how to effectively predict the age insultations stator coil bar. The prediction using time can guide assessment In work, some samples with different ages and temperatures epoxy insulations are generated in an accelerated aging test. Then microscopic morphology spectrograms obtained for samples. We use histogram oriented gradient (HOG) gray-level co-occurrence matrix (GLCM) extract features spectrograms. Finally, support vector machine...
Get PDF Email Share with Facebook Tweet This Post on reddit LinkedIn Add to CiteULike Mendeley BibSonomy Citation Copy Text J. W. Parks, H. Cai, D. Ozcelik, S. Liu, L. Zempoaltecatl, P. Measor, Naccache, C. Y. Chiu, A. R. Hawkins, and Schmidt, "Optofluidic integration for single-particle analysis," in Frontiers Optics 2013, Delyett, Jr. Gauthier, eds., OSA Technical Digest (online) (Optical Society of America, 2013), paper LTh1H.1. Export BibTex Endnote (RIS) HTML Plain alert Save article
Optical coherence tomography (OCT) enables high-resolution, label-free two-dimensional cross-sectional and three-dimensional volumetric imaging of biological tissues. Combining OCT with external force excitation, optical elastography (OCE) provides noninvasive elasticity quantification samples for the pathological analysis tissues early diagnosis diseases. However, OCE system a fixed sample arm cannot be used measurements located in narrow space, such as an oral cavity ear canal, because...
Assembly inspection is a crucial aspect of smart manufacturing to guarantee the quality products. To address challenges posed by complex workshop scenes, an assembly algorithm based on multi-view stereo proposed. Specifically, enhance accuracy reconstruction, method utilizes segmentation attention-assisted depth estimation and point cloud fusion mitigate noise in reconstructed cloud. And proposed introduces normalized loss improve reconstruction ability foreground pixels. Futhermore, this...
As high-intensity beams are required for various applications, high-power, high-current, continuous-wave (CW) radio-frequency quadrupole (RFQ) accelerators have become a research focus in recent years and also direction development the future. To master accumulate advanced technology design, fabrication operation of high-current CW RFQs, RFQ group at Peking University has built window-type RFQ, operating 162.5[Formula: see text]MHz, to accelerate 50-mA deuteron beam from 50[Formula: text]keV...