With the continuous development of power system distribution network automation, network security issues are becoming more and more prominent, in which the collection and analysis of open source threat intelligence is...
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Single-atom site catalysts(SACs)with high atom utilization efficiencies exhibit unexpected properties,making them ideal candidate catalysts for numerous ***,we report a chemical-waste-vapor-assisted(CWVA)strategy for ...
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Single-atom site catalysts(SACs)with high atom utilization efficiencies exhibit unexpected properties,making them ideal candidate catalysts for numerous ***,we report a chemical-waste-vapor-assisted(CWVA)strategy for the synthesis of a catalyst with single atom Fe on semi-hollow N-doped carbon(SA-Fe/SHNC).Benefitting from its atomic Fe sites,the prepared catalyst exhibited a 103-fold higher activity(0.827 vs.0.008mol_(PCB-209)·mol_(M)^(-1)·h^(-1))and much longer time-stability(more than 50 vs.0.5 h)than benchmarked Fe_(3)0_(4) nanoparticles toward decachlorobiphenyl(PCB-209)*** and density functional theory calculations revealed that the highly active isolated Fe sites are responsible for the activity of Fe-SAC/*** addition,the CWVA method was shown to be applicable for synthesizing other single atoms on various structured supports,thereby providing new opportunities for the design of various structured SACs for different applications.
State of health (SOH) estimation is foundational for effective health prognosis and management of lithium-ion batteries. However, conventional data-driven approaches struggle to ensure robust generalisability when tra...
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Climate downscaling is crucial for detailed small-scale analysis and for acquiring climate data in regions without weather stations. Operator learning has proven potential for this task. However, several challenges re...
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Atmospheric turbulence is an important parameter affecting laser atmospheric *** paper reports on a self-developed atmospheric turbulence detection Li DAR system(scanning differential image motion Li DAR(DIM-Li DAR)sy...
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Atmospheric turbulence is an important parameter affecting laser atmospheric *** paper reports on a self-developed atmospheric turbulence detection Li DAR system(scanning differential image motion Li DAR(DIM-Li DAR)system).By designing and simulating the optical system of atmospheric turbulence detection Li DAR,the basic optical imaging accuracy has been determined.
Thrombin blockers have been shown to be effective for various pathological conditions,but their use is limited due to the potential for serious bleeding adverse *** study introduced a novel bioactive peptide(P-2-CG) f...
Thrombin blockers have been shown to be effective for various pathological conditions,but their use is limited due to the potential for serious bleeding adverse *** study introduced a novel bioactive peptide(P-2-CG) from oyster,that mitigated thrombin-mediated barrier dysfunction and prothrombotic phenotypes in human pulmonary microvascular endothelial cells(HPMECs).P-2-CG significantly attenuated the increase in endothelial monolayer permeability induced by thrombin through the possible attenuation of RhoA activation and it promoted barrier recovery by enhancing endothelial cell ***,P-2-CG was found to decrease the pro-thrombotic phenotype induced by thrombin in HPMEC by reducing the extrinsic trigger tissue factor mRNA expression,which resulted in prolonged plasma clotting time,decreased Factor Xa activation,and reduced thrombin ***,P-2-CG inhibited thrombosis efficiently by blocking intercellular adhesion molecule 1 and vascular cell adhesion protein 1 expression via tyrosine phosphorylation of nuclear factor-κB p65.P-2-CG inhibits thrombin mediated inflammation and provides a potential therapeutic option for treating endothelial dysfunction and thrombosis.
The virtual synchronous generator (VSG), utilized as a control strategy for grid-forming inverters, is an effective method of providing inertia and voltage support to the grid. However, the VSG exhibits limited capabi...
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The virtual synchronous generator (VSG), utilized as a control strategy for grid-forming inverters, is an effective method of providing inertia and voltage support to the grid. However, the VSG exhibits limited capabilities in low-voltage ride-through (LVRT) mode. Specifically, the slow response of the power loop poses challenges for VSG in grid voltage support and increases the risk of overcurrent, potentially violating present grid codes. This paper reveals the mechanism behind the delayed response speed of VSG control during the grid faults. On this basis, a compound compensation control strategy is proposed for improving the LVRT capability of the VSG, which incorporates adaptive frequency feedforward compensation (AFFC), direct power angle compensation (DPAC), internal potential compensation (IPC), and transient virtual impedance (TVI), effectively expediting the response speed and reducing transient current. Furthermore, the proposed control strategy ensures that the VSG operates smoothly back to its normal control state following the restoration from the grid faults. Subsequently, a large-signal model is developed to facilitate parameter design and stability analysis, which incorporates grid codes and TVI. Finally, the small-signal stability analysis and simulation and experimental results prove the correctness of the theoretical analysis and the effectiveness of the proposed control strategy.
As autonomous mobile robots are increasingly deployed in complex environments, traditional vision sensors and LiDAR encounter considerable limitations, particularly in detecting obstacles in blind spots or transparent...
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Photocatalytic oxidation is considered to be a highly promising technology for indoor formaldehyde (HCHO) abatement. However, powdered photocatalysts encounter practical challenges due to their recycling difficulties ...
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Regarding the mechanical resonance problem caused by the coupling of flexible characteristics and transmission stiffness, this typical problem is faced by aircraft rudder servo systems under the requirement of lightwe...
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