By cutting MoS2 microcrystals to quantum dots (QDs) of sizes below 10 nm, the photoluminescence (PL) at ca. 450 nm can be detected easily due confinement effects across 2D planes. The PL is stable under continuous irradiation UV light but gradually quenches when treated with an increasing concentration hydrogen peroxide. Time-resolved and Raman spectra imply that H2O2 causes partial oxidation QDs. First-principles calculations reveal QDs oxygen impurity are indirect bandgap structures...

This study represents a significant advancement in structural health monitoring by integrating infrared thermography (IRT) with cutting-edge deep learning techniques, specifically through the use of Mask R-CNN neural network. approach targets precise detection and segmentation hidden defects within interfacial layers Fiber-Reinforced Polymer (FRP)-reinforced concrete structures. Employing dual RGB thermal camera setup, we captured meticulously aligned image data, which were then annotated...

This study presents a new approach for predicting the punching shear strength of reinforced concrete flat plates with steel and fiber-reinforced polymer (FRP) bars, using four machine learning regression models. A dataset 505 interior from previous literature was used to develop Input variables were transformed Box-Cox Yeo-Johnson transformations improve predictive power by reducing white noise. The SHapley Additive exPlanations (SHAP) framework utilized as Explainable Artificial...

In this work, we experimentally investigated the thermal stability of interlayer exchange coupling field (Hex) and strength (–Jiec) in synthetic antiferromagnetic (SAF) structure [Pt(0.6)/Co(0.6)]2/Ru(tRu)/[Co(0.6)/Pt(0.6)]4 multilayers with perpendicular anisotropy. Depending on thickness spacing ruthenium (Ru) layer, observed can be either ferromagnetic or antiferromagnetic. The Hex were studied by measuring magnetization hysteresis loops temperature range from 100 K to 700 as well...

Abstract Ultraviolet (UV) light can be used in versatile applications ranging from photoelectronic devices to biomedical imaging. In the development of new UV sources, this study, stable emission at ≈350 nm is unprecedentedly obtained carbon nanospheres (CNSs). The origin fluorescence comprehensively investigated via various characterization methods, including Raman and Fourier transform infrared analyses, with comparison visible nanodots. Based on density functional calculations, assigned...

A simple and clean ultrasonic method is developed to curve 2D g-C₃N₄ sheets into 1D nanotubes.

Structure and magnetic properties of sputter-prepared Co(5 nm)/MnPt(20 nm) MnPt/Co polycrystalline films with various annealing temperatures (T) have been compared. XRD TEM analysis show that MnPt is more compressive in film plane for Co/MnPt than at as-deposited state. Large HE 464-560 Oe are attained two series through proper thermal process post cooling external field. The increase T mainly dominated by the ordering degree layer roughness interface. As compared to (T = 250 °C), exhibits...

Abstract Nowadays, the winter is getting harsher and in Northern China. Thus, centralized heating systems (CHSs) are playing even more irreplaceable, essential critical roles ensuring general public’s livelihood than never ever before. CHSs normally composed of one or several combined heat power (CHP) plants (units) an extensive vein like district networks (DHNs) connecting with chemical plants, paper mills, food processing factories, hospitals, hotels, universities, prisons residential...

Aiming at the problem that distributed power sources are difficult to be centrally scheduled and optimized, a virtual plant (VPP) optimization scheduling method based on deep reinforcement learning is proposed. The can adaptively adapt uncertainty of source load give real-time optimal strategies in presence fluctuations. First, system framework VPP constructed, model established with objective function minimum daily operating cost, various condition constraints practically considered. Then,...

Multi-object image recognition is a pivotal research area in computer vision with widespread applications security monitoring, autonomous driving, medical imaging, and beyond. Recent advancements machine learning have significantly propelled the progress of algorithms. However, challenges such as limited precision, difficulty detecting small objects, computational inefficiencies persist. This paper delves into performance analysis existing multi-object algorithms, examining their across...

Abstract Transesterification between poly–ε–caprolactone (PCL) and polyethylene-terephthalate (PET) under shear flow was investigated. Two types of were imposed to the test samples; one is a simple other an oscillatory shear. Comparing reaction at quiescent state, provides better conversion reaction. For flow, rate increases as increases, while increasing frequency amplitude enhances extent Improvements transesterification by prevail over those motion. The results imply that mass transfer...

Wireless power transfer (WPT) is the preferred charging method for battery-powered electric vehicles (EVs). In this paper, a novel WPT system with constant current capability introduced warehouse lead-acid batteries. First, schematic structure of proposed discussed. A asymmetrical loosely coupled transformer designed to enable high-voltage feeding low-voltage output and reduce weight secondary side. Secondly, an optimized magnetic coupler using ferrite cores shielding ensure stable...

BaTiO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf> powder synthesized by solid-state and hydrothermal method is the main dielectric material for multilayer ceramic capacitors (MLCCs). The microstructure of highly related to synthesis process, which imposes significant influence on electrical performance MLCCs. In this study, a systematic investigation was conducted compare properties MLCCs fabricated with prepared (S-BaTiO ) processes...