Mismatched electron and proton transport rates impede the manifestation of effective performance electrocatalytic oxygen evolution reaction (OER), thereby limiting its industrial applications. Inspired by natural protein cluster in PS-II, different organic-inorganic hybrid electrocatalysts were synthesized via a hydrothermal method. p-Toluidine (PT), benzoic acid (BA), p-aminobenzoic (PABA) successfully intercalated into NiFe-LDH. Compared to organic molecules containing single functional...

The hybrid subdomain method (HSDM) combining conventional SDM with equivalent magnetic network has been proved to be a qualified approach field prediction. However, this still suffers two issues: first, the saturation effect of stator core is considered but that rotor ignored, thus causing no-accuracy calculation; second, mathematical complexity inevitable due adoption virtual line-current density as extra interface conditions. This work develop an improved HSDM (IHSDM) for accurately and...

The GNSS/INS integrated navigation system is widely used in the UAV positioning. However, GNSS signals may be interrupted complex environments such as signal shielding and occlusion, positioning accuracy will rapidly decrease under independent INS system. To improve of during outages, an error compensation method assisted by long short-term memory (LSTM) neural network integrating attention mechanism (AT-LSTM) proposed. When are available, model between specific force, angular rate,...

Occurrences of mycotoxins in cereals are widespread throughout the world. However, lack efficient and ultrasensitive tests has largely impeded identification these substances actual samples. Herein, a novel one-pot isothermal assay that integrates rolling-circle amplification (RCA) CRISPR/Cas12a to detect aflatoxin B

Covalent organic frameworks (COFs) have become potential candidates for gas purification technology, especially in carbon capture and storage applications. By utilizing strategies such as pore structure design functional modification, COFs been developed to exhibit high selectivity superior adsorption capacity the effective separation of CO2 from industrial waste gases. Notably, alkali metals strong interactions with backbone COFs, which can enhance CO2/N2 performance these porous materials....

This paper focuses on invetigating the relationship between contact features of tyres and tyre wear in a quantitative sense as function structure manoeuvre parameters by utilizing modified theoretical model. The model was developed combining ring for brush validated. were also identified physical experiments. Moreover, characterized length, asymmetry factor rolling resistance shift order to investigate influence wear. amount versus three key variables with variations plotted analysed....

Abstract We report the facile preparation of nitrogen‐doped mesoporous hollow carbon nanospheres (N‐MHCNS) by directly carbonizing polypyrrole that are derived from in situ polymerization. Here, we use a novel soft template (PMMA‐PBMA‐PMAA) as core. At 700 °C, obtained N‐MHCNSs (denoted N‐MHCNS700) show superior electrochemical performance. In 1 M HCl electrolyte, N‐MHCNS700 exhibits capacitance high 275.5 F g −1 at current density A and rate capability, retaining 54.4 % initial 20 ....

Hyaluronidase (HAase) is a biomarker for cancer, and its detection of great significance early diagnosis. However, the requirement sophisticated instruments, tedious operation procedures, labeled molecules conventional HAase biosensing methods hampers their widespread applications. Herein, we report portable slippery viscosity-sensing platform with time readout first demonstrate tannic acid (TA, inhibitor) as model system. specifically cleaves hyaluronic (HA) decreases HA solution viscosity,...

This document suggests a cutting technique for coating the surface of micro-textured structural tools, aiming to tackle challenges in machining aluminium alloy materials that are hard machine and simple soften stain at elevated temperatures. Initially, considering varied conditions dosage during process caused by diverse forces, favored parameters are; next, creating two distinct phases micro-texture application on tool’s surface, conducting simulation tests with previously mentioned ideal...

Dry cutting is an effective method to realize the concept of green today. However, in process bearing steel, high temperatures and pressures produced by tool chip under dry friction seriously affect machining performance tool. Therefore, a bionic microstructure based on bionics proposed improve reduce changing size parameters microstructure. On basis finite element simulation tests, force, surface roughness, shape are used evaluate performance. It found that composite micro-textured tools...

Various kinds of hybrid subdomain methods (HSDMs) and stress calculation approaches have been proven to be effective ways for magnetic field prediction, respectively. However, there is no suitable approach address this dual requirement during the design stage synchronous reluctance motor. To mentioned difficulty, work proposes a new HSDM (NHSDM) integrating improved finite difference method (IFDM), method, equivalent network (EMN). The key proposed NHSDM has three parts. First, IFDM...

The solution speed of the finite element method (FEM) limits design and analysis motors in various physical fields. This article presents a rapid prediction for magnetic temperature field U-shaped interior permanent magnet synchronous motor (IPMSM). Firstly, an analytical combining magnetomotive force (MMF)-permeance subdomain is performed to predict distribution. Considering complex rotor structure, novel subdivision equivalence boundary processing are employed ensure minimum loss shape...

As the subject of long-term stable development electric power industry, grid enterprises areholding important mission transmission. Their secure and operations play a very importantrole in entire electricity production consumption system. This paper analysed enormous profit risksof under influence implementing current policy energy saving furtherstudied significance constructing management control system bill risks from aspects oforganization institution construction, reporting information...

Precise calculation of iron loss and stray losses is significant to research development high efficient motor. Therefore, taking a 710kW high-voltage induction motor as an example, on the basis field-circuit coupled time-stepping finite element method, 2-D transient mathematical model prototype built calculate losses. The method based Bertotti separate model, considering both alternating rotating fields, are also calculated after calculation, distribution graphs made. application shows that...

Among the jamming methods for synthetic aperture radar, spoofing is most effective one, but it requires a higher configuration of hardware platform because high computational effort. The jammer platform, on other hand, will generally have sampling rate several times than radar IF signals requirement instantaneous bandwidth, which bring additional data volume and resource consumption. In this paper, by processing signal with rate, we ensure that existing can avoid consumption brought generate...

According to the trend of compressor upgrades in hydrogen refueling stations, this article optimizes single exponential curve membrane chamber volume and diaphragm stress that performs poorly. First, set optimization goals as cavity arc length curve, use MOPSO algorithm optimize fit results obtain a new mathematical model. Then, select three curves for comparison. Theoretical calculations finite element simulations were performed on stress, theoretical calculation methods verified with help...

The effect of coupling copper and phosphorus in steel on atmospheric corrosion behavior was investigated using high-throughput experimental methods. Wire beam electrodes plates with discrete distribution composition gradients were prepared through a selective laser melting method. By combining array electrode scanning tests EPMA, the electrochemical properties relationship between different contents rapidly determined. Plenty data obtained analyzed according to relevant standards screened...