A5026533923- Microwave Engineering and Waveguides
- Advancements in PLL and VCO Technologies
- Radio Frequency Integrated Circuit Design
- Advanced MEMS and NEMS Technologies
- Electric Motor Design and Analysis
- Photonic and Optical Devices
- Magnetic Bearings and Levitation Dynamics
- Advanced Photonic Communication Systems
- Intraperitoneal and Appendiceal Malignancies
- Ovarian cancer diagnosis and treatment
- Spectroscopy Techniques in Biomedical and Chemical Research
- Geophysics and Sensor Technology
- Image Processing Techniques and Applications
- Dermatologic Treatments and Research
- Wind Turbine Control Systems
- Organic Light-Emitting Diodes Research
- Wireless Power Transfer Systems
- Power Systems Fault Detection
- Magneto-Optical Properties and Applications
- Advanced Sensor Technologies Research
- Optical Coherence Tomography Applications
- Advanced Fluorescence Microscopy Techniques
- Photodynamic Therapy Research Studies
- Advanced Image Processing Techniques
- Teleoperation and Haptic Systems
Southeast University
2011-2022
Hunan University
2007-2022
Qingdao University
2022
Affiliated Hospital of Qingdao University
2022
East China Normal University
2018-2020
Lanzhou University
2015
Ministry of Education of the People's Republic of China
2013
Applied Materials (United States)
2012
Suzhou Institute of Nano-tech and Nano-bionics
2011
Fujian Normal University
2010-2011
The dislocation multiplication and movement mechanism in GaN single crystals has been studied using nanoindentation cathodoluminescence. Dislocation loops can multiply move from plane to by cross-slip, thus producing a wide plastic deformation during indentation. This is further supported the remarkable of indentation induced dislocations annealing. Furthermore, so-called pop-in events, which indenter suddenly enters deeper into material without application any additional force, be better...
Flux adjustable permanent magnet machines (FAPMMs) are a novel type of (PM) which able to flexibly adjust the field excitation flux linkage and offer distinctive advantages high power density efficiency. They have attracted ever-increasing interests promising candidate for electric vehicle, machine-tool aircraft applications. In this paper, state-of-the-art various FAPMMs comprehensively reviewed according three means flux-adjustment, i.e. electrically adjusted by either auxiliary windings...
The micromechanical silicon resonant accelerometer has attracted considerable attention in the research and development of high-precision MEMS accelerometers because its output quasi-digital signals, high sensitivity, resolution, wide dynamic range, anti-interference capacity good stability. Because mismatching thermal expansion coefficients glass, based on Silicon Glass (SOG) technique is deeply affected by temperature during fabrication, packaging use processes. stress caused changes...
Ovarian tumors (OTs) are common gynecological in women. It is very important to correctly distinguish benign and malignant OTs.To assess the diagnostic performance of American College Radiology (ACR) Ovarian-Adnexal Reporting Data System (O-RADS) evaluate clinical value O-RADS combined with serum carbohydrate antigen 125 (CA125) human epididymis protein 4 (HE4) differentiating from OTs.A retrospective analysis was performed on 431 cases including pathology data. The receiver operating...
We use a novel nonlinear optical technique, multiphoton microscopy, to differentiate keloids from hypertrophic and normal scars through the morphological quantitative analysis of collagen elastin in superficial dermis scar tissues boundary between skin tissue.
This paper presents a Ka-band integer-N quadrature frequency synthesizer for 5G mm-wave communication applications. It utilizes dual co-tuning in-phase injection-coupled voltage-controlled oscillator (IPIC-QVCO) including differential coplanar waveguide (DCPW), digitally-controlled coarse varactor array (DCCVA), and analog-controlled fine varactors (AFCV) matched injection-locked divider (ILFD) to achieve wide locking range (LR), low phase noise, small error. Even fabricated in cost large...
With development of electric power system, current transducer and voltage based on electromagnetic induction principle can not meet the requirements automation intelligence. To overcome problems, optoelectronic sensing technology have been studied deeply. Combined with research progress optic transducer, we analyze basic principles in two kinds compare characteristics measurement between investigate influences system relay protection, energy metering control, discuss key technologies related...
This paper proposes an improved sliding mode observer (SMO) for sensorless permanent magnet synchronous motors (PMSM) in renewable energy systems. In order to alleviate the chattering problem conventional SMO, switching function is modified with a sinusoidal sliding-surface neighborhood and gain regulated rotor speed expend functional range. The phase locked loop (PLL) method adopted extract position further improvement of problem. adaptive rule obtained by Lyapunov analysis, during which...
A novel method based on the analysis of instantaneous phase is proposed to extract jitter phase-locked loops output clock. The utilizes Hilbert transform extend real signal PLLs into an analytic signal, and implementation Fourier windowed with Hamming window. Then, clock extracted from signal. experimental results simulations validate that can effectively PLL clock, it has better performance by comparing sinusoidal extraction other methods.
To identify prognostic factors in patients with borderline ovarian tumor (BOT) and establish validate a nomogram predicting recurrence BOT treated fertility-preserving surgery.Patients who underwent surgery at two institutions between January 2000 June 2017 were included categorized into training validation cohorts. Univariate log rank test Cox regression analysis performed the cohort to factors, was developed predict rate. The model validated by calculating C-index drawing calibration curve...
Multiple resonators architecture is widely applied in wireless power transfer (WPT) systems, such as relay coils and metamaterials to increase the coupling coefficient, transmission efficiency distance. However, addition of extra LC undoubtedly influences overall performance whole system. In this paper, an analysis methodology proposed investigate resonant frequencies response external excitations WPT system, which equipped with multiple based on similarity multi-degree-freedom vibration...
In this paper, we report second harmonic generation (SHG) imaging of human keloid tissue. High resolution SHG images collagen component were obtained in the superficial, medial and deep dermis tissue, respectively. Our results show that method has a capability to observe structure which will help better understand formation process scar at molecular level.
high-impedance
The relativity between the additive phase noise of a direct modulation analog optical link and RF power level as well this average at photodiode (PD) input are experimentally investigated. results show far from carrier can be suppressed by setting to maximum achievable while keeping PD operate under proper saturation status. Through optimization, difference signal source one after transmission frequency offset ≥100 kHz has been reduced ≤5dB. Furthermore, close is proved mainly caused...
This paper presents a quadrature frequency synthesizer (QFS) utilizing switched-coupled slotted inductor (SCSI)-based voltage-controlled oscillator (VCO) to simultaneously improve the reference spurs and out-of-band phase noise while achieving wide tuning range for multiband 5G mm-Wave (mmW) applications. The QFS is implemented in 55 nm CMOS process, of -64 -72 dBc, an in-band -81.7 -87 dBc/Hz at 100 kHz offset -119.1 -125.4 10 MHz offset, respectively, over entire 19.89 26.35 GHz locking...
The key branches of power system can effectively reflect the security weaknesses transmission line, efficiency secure economic dispatch and control will be significantly improved by reducing to a precise model with preserved.A new network reduction method preserving is proposed.Firstly, spectral partitioning used extract feather modeled.And then, an centroid sorting technology applied for obtaining optimal reduced model.Lastly, algorithm based on transfer distribution factor computing...
This paper studies the control theory and methods of silicon micromachined resonant accelerometers(SMRAs). According to structure movement accelerometer, model its dynamics equations motion are deduced. The closed-loop is set up with phase lock loop (PLL). principle PLL expounded in detail. requirements for phases gains sinusoidal self-drive-oscillation met by PLL. average method take slowly changing variables within a cycle find solutions nonlinear equations. Using method, it analyzes PLL’s...