Motor Imagery (MI) based on Electroencephalography (EEG), a typical Brain-Computer Interface (BCI) paradigm, can communicate with external devices according to the brain's intentions. Convolutional Neural Networks (CNN) are gradually used for EEG classification tasks and have achieved satisfactory performance. However, most CNN-based methods employ single convolution mode kernel size, which cannot extract multi-scale advanced temporal spatial features efficiently. What's more, they hinder...

Abstract Electrochemical reduction of CO 2 provides an ideal approach to convert the greenhouse gas into fuels under mild conditions. Copper electrodes are capable producing significant amounts hydrocarbons, but selectivity methane (CH 4 ) remains low. Here, we prepared functionalized Cu nanowire by coating polymers (polydopamine, PDA) and experimentally verified that CuNWs indeed shows 2.3 times higher CH compared with CuNWs. The PDA catalyst catalytically stable for in excess 14 hours. We...

Quantum key distribution is a cornerstone of quantum technology, offering information-theoretical secure keys for remote parties. With many communication networks established globally, the mode-pairing protocol stands out its efficacy over inter-city distances using simple setups, emerging as promising solution. In this study, we employ scheme into existing fiber links, conducting field tests across ranging from tens to about hundred kilometers. Our system achieves rate 1.217 kbit/s in...

Mitochondrial inflammation triggered by abnormal mitochondrial division and regulated the Drp1/HK1/NLRP3 pathway is correlated with progression of aging-associated cognitive impairment (AACI). Alpinetin a novel flavonoid derived from Zingiberaceae that has many bioactivities such as antiinflammation anti-oxidation. However, whether alpinetin alleviates AACI suppressing pathway-inhibited still unknown. In present study, D-galactose (D-gal)-induced aging mice BV-2 cells were used, effects on...

Transformers are the most widely used apparatus in power systems to transfer electrical energy from one side another. Despite remarkable achievements transformer modelling over past few years, three-phase techniques have not progressed that of their single-phase counterparts, mainly because topological correctness core and coil structure, complicated interaction between fluxes three iron legs, non-linear saturation ferromagnetic material. An improved model with extended inverse...

PERK/CHOP pathway-mediated excessive endoplasmic reticulum (ER) stress is closely linked to aging-related cognitive impairment (ARCD). Zerumbone (ZB), a naturally occurring sesquiterpene molecule obtained from dietary bitter ginger, has garnered significant interest due its diverse range of biological properties. It unclear, though, if ZB can reduce ARCD by preventing ER that dependent on the pathway. Here, PERK-CHOP pathway was main focus an evaluation effects and mechanisms for attenuating...

This study investigates the physical mechanism of ferroresonance and its control. Based on this mechanism, a flexible control method for is proposed, discussed. High-frequency controllable switches are used in module proposed study, several parameters can be adjusted according to types identified by comprehensive identification system saturation degrees ferroresonance. The then switched into secondary circuit potential transformer, controlled. Simulation experimentation show that various restrained.

Ferroresonance is a common and complex phenomenon in power systems. Some types of ferroresonances are remarkably difficult to distinguish from others. This study adopts non‐linear analysis methods directly extract characteristic quantities ferroresonance overvoltage time series (FOTS). Simulated practical FOTS investigated validate the proposed method. Non‐linear quantities, i.e. average grey value reconstructed attractor improved largest Lyapunov exponent overvoltage, extracted based on...

Quarrying for constructions has left many bare rocky slopes, in order to recreate biodiversity, artificial revegetation methods have been widely used the ecological restorations. The study selected several slopes Zhoushan City vegetation survey, recorded species and habitat factors different sample plots. Based on data, community parameters such as diversity indices were computed statistical analysis, then relationship between slope re-vegetation revealed. results showed, changes of habitats...

Introduction: The decoding of the motor imaging electroencephalogram (MI-EEG) is most critical part brain-computer interface (BCI) system. However, inherent complexity EEG signals makes it challenging to analyze and model them. Methods: In order effectively extract classify features signals, a classification algorithm imagery based on dynamic pruning equal-variant group convolutional network proposed. Group networks can learn powerful representations symmetric patterns, but they lack clear...

Amorphous alloy is increasingly widely used in the iron core of power transformer due to its excellent low loss performance. However, potential harm system not fully studied during electromagnetic transients transformer. This study develops a simulation model analyze effect materials on ferroresonance. The based π equivalent circuit. flux linkage–current (ψ–i) Jiles–Atherton reactor developed an Electromagnetic Transients Program-Alternative Program and represent magnetizing branches model....

This study introduces an extended Jiles–Atherton (JA) hysteresis model, which considers dynamic loss and anisotropy. The two considerations facilitate accurate non‐linearity representation of electromagnetic devices, thereby resulting in a precise agreement between the simulated measured loops. To achieve this goal, JA model parameters must be estimated by optimisation algorithm. Therefore, improved shuffled frog‐leaping algorithm (ISFLA) is proposed study. Differential evolution (DE)...

During the switching on/off of shunt capacitor banks in substations, vacuum circuit breakers (VCBs) are required to switch off or on capacitive current. Therefore, VCBs have be operated under a harsh condition ensure reliability equipment. This study presents complete comparison ordinary and phase-controlled 10 kV banks. An analytical analysis for is presented basis reduced with an ungrounded neutral. A phase selection strategy proposed. Switching current waveforms overvoltage with, without,...

This paper proposes an improved centered cycle method for identifying the Preisach distribution function based on non-uniform discretization. The principle and limits of are first introduced. Then, discretization is proposed curvature anhysteretic magnetization curve. numbers loops decided by proportion integral curvature. to determine cell values non-uniformly discrete triangle also validated laboratory test a toroidal sample. results show higher precision predicting hysteresis loop than...

In the production of automotive gauge, one most important step is to test meters on dashboard some which are needle meters. Based computer vision technology, a dynamic automatic reading value method presented in paper. With hardware loop (HIL) platform simulating actual vehicle running state and providing sensor signals or data via CAN(controller area network) bus for tested dashboard, by comparing input indication obtained through image process method. As core technology method, how read...

Ferroresonance is one of the most harmful and longest known power quality disturbances in history AC systems. The ability predicting transient steady-state ferroresonance simulations mainly depends on accuracy transformer model. Most existing voltage models apply single-valued nonlinear functions to represent core nonlinearities. This study, based our previous work, proposes a newly improved accurate iron hysteresis model for simulation by extension classical arctangent To verify proposed...