Qiyuan Zhang

ORCID: 0000-0003-0697-7800
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Research Areas
  • Advanced Photocatalysis Techniques
  • Stability and Control of Uncertain Systems
  • Parasitic Infections and Diagnostics
  • Stability and Controllability of Differential Equations
  • Advanced Sensor and Energy Harvesting Materials
  • Covalent Organic Framework Applications
  • Copper-based nanomaterials and applications
  • Soil Mechanics and Vehicle Dynamics
  • Advanced Frequency and Time Standards
  • Smart Agriculture and AI
  • Conducting polymers and applications
  • GNSS positioning and interference
  • Multiferroics and related materials
  • Agricultural Engineering and Mechanization
  • Parasites and Host Interactions
  • Metal-Organic Frameworks: Synthesis and Applications
  • Geophysics and Gravity Measurements
  • Phase Equilibria and Thermodynamics
  • Vehicle Dynamics and Control Systems
  • Real-time simulation and control systems
  • Advanced Control Systems Optimization
  • Heat and Mass Transfer in Porous Media
  • Neural Networks Stability and Synchronization
  • Supercapacitor Materials and Fabrication
  • Advanced MEMS and NEMS Technologies

Northeastern University
2024

Henan University of Science and Technology
2020-2024

Nanjing Forestry University
2024

Beihang University
2024

University of Science and Technology Beijing
2024

Lanzhou Jiaotong University
2024

IRD Fuel Cells (Denmark)
2024

Chongqing University
2021-2023

Tarim University
2019-2022

Shenyang Agricultural University
2022

Significance Liquid electrolytes with thermophysical properties analogous to solid polymers, but exceptional liquidlike ionic conductivities, are formed spontaneously when moderate amounts (≤1 M) of inorganic salts coordinate strongly small molecules in a conventional aprotic solvent. Specifically, we report that composed the cyclic liquid ether, dioxolane (DOL), and containing simple salt LiNO 3 able completely bypass → crystalline thermal transition, exhibit abnormally high bulk...

10.1073/pnas.2004576117 article EN Proceedings of the National Academy of Sciences 2020-10-05

Self-standing nitrogen-doped carbon nanofibers with homogeneously embedded CoMn<sub>2</sub>O<sub>4</sub> nanoparticles exhibit superior oxygen reduction/evolution catalytic activity and stability for metal–air batteries.

10.1039/c9ta09873a article EN Journal of Materials Chemistry A 2019-01-01

10.1016/j.compag.2004.01.007 article EN Computers and Electronics in Agriculture 2004-04-21

This article presents a new sampled-data-based event-triggered pointwise security controller by measurements for partial differential equation (PDE) systems under stochastic cyberattacks. First, according to the Takagi–Sugeno fuzzy model, considered nonlinear system is reconstructed and an proposed with measurements. Moreover, networked control are introduced improve transmission convenience; however, two deception cyberattacks different characteristics brought into PDE first time. In...

10.1109/tfuzz.2021.3092200 article EN IEEE Transactions on Fuzzy Systems 2021-06-24

Abstract This paper presents a triaxial capacitive accelerometer with low nonlinearity and cross-axis sensitivity, fabricated using SOG processing. Three single-axis sensor devices are orthogonally integrated on single die. The signal detection feedback mechanisms for the lateral (x/y-axis) vertical (z-axis) accelerometers implemented in fully differential configuration, significantly reducing device external environmental interference. dynamic characteristics of mechanical structure derived...

10.1088/1361-6439/ada61c article EN Journal of Micromechanics and Microengineering 2025-01-06

Finding a pathway between crop rows is essential for automated guidance of some agricultural vehicles. The research reported in this paper developed vision-based method detecting rows. This applied the Hough transform and connectivity analysis to process images vehicle's forward view use them find appropriate field. was used detect identify most suitable path from all possible choices. system implemented an tractor tested both laboratory field experiments. methodology devised overcame image...

10.1243/095440705x34667 article EN Proceedings of the Institution of Mechanical Engineers Part D Journal of Automobile Engineering 2005-06-20

Abstract To obtain the energy-saving and environment-friendly lightweight bio-based thermal insulation, polyurethane matrix was incorporated with wood fiber, bamboo rice husk liquefied polyol at different percentages (25%, 30%, 35%). The results revealed that apparent density for natural fibers reinforced insulation between 105 kg.m −3 178 by adding 35% of into matrix. conductivity ranged from 0.045 to 0.065 W.m −1 K , addition increased mechanical strength. prepared showed great potential...

10.1088/2053-1591/ab8d87 article EN cc-by Materials Research Express 2020-04-27

Blastocystis is one of the most common intestinal parasites in humans and various animals worldwide. Few studies are available regarding genetic characterization infections China.In present study, 609 fecal samples were collected from two- to six-year-old kindergarten children southern Xinjiang examined by polymerase chain reaction (PCR).The infection rate was 14.3% (87/609); no significant difference observed among counties between sexes. subtypes ST1 (n = 38), ST2 8), ST3 41) identified...

10.1186/s13071-020-3890-0 article EN cc-by Parasites & Vectors 2020-01-10

The CCT gene family plays important roles in diurnal rhythm and abiotic stress response, affecting crop growth development, thus yield. However, little information is available on the foxtail millet (Setaria italica). In present study, we identified 37 putative SiCCT genes from genome. A phylogenetic tree was constructed predicted full-length amino acid sequences, together with proteins rice Arabidopsis as representatives of monocotyledonous dicotyledonous plants, respectively. Based...

10.3390/genes13101829 article EN Genes 2022-10-10

An improved fuzzy event-triggered underactuated control strategy for networked coupled partial differential equation-ordinary equation (PDE-ODE) systems subject to singular perturbations is established. First, the PDE-ODE are combined into an integrated system by representing ODE and PDE states as a new state variable. Subsequently, perturbed matrix introduced describe multiple time-scale phenomenon of system. In addition, controller proposed ensure stability closed-loop based on boundary...

10.1109/jsyst.2023.3272740 article EN IEEE Systems Journal 2023-05-15

Photocatalytic Z or S scheme merits higher redox potentials and faster charge separation. However, heterostructure photocatalysts with band gaps of bulk materials often have a type I structure leading to poor photocatalytic activity. In view this, we report simultaneous tuning Cu2 O TiO2 , where quantum dot nanoparticles were formed on doped Ti3+ . The reduced size made its conduction more negative, whereas the introduction absorption edge red shift visible light region. as-formed enabled an...

10.1002/chem.202102120 article EN Chemistry - A European Journal 2021-08-12

Poor dispersibility of pure polypyrrole in the hydrophilic matrixes has limited its application wearable sensors. Fortunately, situ polymerization Py adsorbed on CNC surface resulted polypyrrole@cellulose nanocrystal (PPy@CNC) with excellent and electrochemical properties. It was found that pyrrole (Py) through H-bonds. The adsorption capacity CNCs for 1006.7 mg·g–1. PPy grew along during polymerization. PPy@CNC achieved a capacitance more than 150.15 F·g–1. Even after 1000 CV testing...

10.1021/acsanm.4c02851 article EN ACS Applied Nano Materials 2024-10-31

Most off-road vehicles employ fluid power to actuate their steering system. Although the actual force that turns wheels is exerted by hydraulic cylinders, critical element of a control system directional valve. Auto-steering typically achieved sending electrical signals valve solenoid drivers. A fuzzy logic controller was designed create such signals. The algorithm implemented in hardware-in-the-loop electrohydraulic simulator. set 25 rules defined represent four types characteristic curve...

10.1243/09544070jauto568 article EN Proceedings of the Institution of Mechanical Engineers Part D Journal of Automobile Engineering 2008-06-01

Abstract This paper addresses event‐triggered point control design for semilinear partial differential equation systems by using pointwise measurements. First, the nonlinear terms existing in plant are approximated Takagi–Sugeno fuzzy model, based on which a novel controller is constructed. The main novelties of strategy summarized as follows: (1) one‐dimensional space divided into L parts, and only few points need to measure. (2) Event‐triggered communication scheme introduced save limited...

10.1002/rnc.5354 article EN International Journal of Robust and Nonlinear Control 2020-12-17

In this article, an event-triggered control problem for partial differential equation systems with pointwise measurements is investigated via relaxed Lyapunov–Krasovskii functionals. First, the Takagi–Sugeno fuzzy model introduced to describe nonlinear and a controller proposed measurements, which can make tradeoff between system's performance implementation complexity subject limited transmission bandwidth. Second, some conditions are established ensure closed-loop stability by using...

10.1109/tfuzz.2021.3101586 article EN IEEE Transactions on Fuzzy Systems 2021-08-04

From network RTK to PPP-RTK, it is highly expected that high-precision positioning within a few minutes can be achieved with sparse reference network. In this study, we investigate rapid multi-frequency PPP convergence strategy based on Galileo E1/E5a/E6 and BeiDou-3 B1C/B2a/B3I signals, whose unambiguous wide-lane observables efficiently assist in speeding up narrow-lane ambiguity resolution. Furthermore, frequency-specific biases existing the third-frequency have been observed slow down...

10.3390/rs13234746 article EN cc-by Remote Sensing 2021-11-23
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