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Articles by Junbiao Chen
Association of a routine dexmedetomidine-remifentanil anesthetic strategy with POD3 morning cortisol change in older patients undergoing radical esophagectomy
Abstract Background: Older patients undergoing radical esophagectomy may experience marked postoperative endocrine stress, inflammation, pain, and short-term cognitive decline. We evaluated whether a routine anesthetic strategy combining dexmedetomidine with remifentanil was associated with a smaller POD3 serum cortisol increase than remifentanil- or dexmedetomidine-based strategies alone.
A Signal-On Microelectrode Electrochemical Aptamer Sensor Based on AuNPs-MXene for Alpha-Fetoprotein Determination
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Comparison of simulation results of integration coefficients for...
Context 1 ... this, the THD decreases significantly as the scale factor of the voltage outer loop increases, which is in line with the fact that a larger scale factor leads to faster correction of deviation, but the maximum voltage does not have a particularly obvious change pattern. For a system driven with a 100 nF load capacitance, 200 Vpp driving voltage, and 100 Hz waveform frequency, Table 3 displays the actual output voltage and THD for various voltage outer loop integration factors.
Junbiao Chen's research works
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Figure 4. Voltage and current dual closed loop.
Context 1 ... introducing PI control into the current loop would increase the system order, potentially compromising its stability and reliability. Figure 4 shows a simplified schematic diagram. ...
Comparison of different circuit structures.
Context 1 ... this study, we propose a piezoelectric actuator driver grounded on a bidirectional four-switch buck-boost converter (FSBBC) integrated with PI-P feedback control. Table 1 presents a comparative analysis of boost, buck-boost, and FSBBC. Distinguished by its broader input voltage adaptability, FSBBC showcases significant technological advantages over standard converters. ...
(PDF) A 3-to-5 V Input, 80 Peak-to-Peak Voltage (Vpp) Output, 2.75% Total Harmonic Distortion Plus Noise (THD+N), 2.9 μF Load Piezoelectric Actuator Driver with Four-Switch Buck-Boost
Citation:Ye,R.;Chen,J.;Dong,S.;Li, B.A3-to-5VInput,80Peak-to-Peak Voltage(Vpp)Output,2.75%Total HarmonicDistortionPlusNoise 2.9 (THD+N),µFLoadPiezoelectric ActuatorDriverwithFour-Switch Buck–Boost.Actuators2023,12,345. https://doi.org/10.3390/ act12090345 AcademicEditor:JunkaoLiu Received:18July2023 Revised:11August2023 Accepted:24August2023 Published:28August2023 Copyright:©2023bytheauthors. LicenseeMDPI,Basel,Switzerland.
Actuators | Free Full-Text | A 3-to-5 V Input, 80 Peak-to-Peak Voltage (Vpp) Output, 2.75% Total Harmonic Distortion Plus Noise (THD+N), 2.9 μF Load Piezoelectric Actuator Driver with Four-Switch Buck-Boost
3.2. Simulation Each parameter still has a range of values that satisfy the constraint of stability, and various values have various effects on the system, which are categorically explained below and validated in a simulation carried out using Matlab with the circuit shown in Figure 1. The first category is how the system is impacted by the voltage outer loop’s scale factor.
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