One-dimensional single-crystal nanostructural nickel selenides were successfully in situ grown on metal foils by two simple one-step solvothermal methods, which formed NiSe/Ni counter electrodes (CEs) for dye-sensitized solar cells (DSSCs). The foil acted as the source reaction process, a supporting substrate, and an electron transport "speedway". Electrochemical testing indicated that top 1D NiSe exhibited prominent electrocatalytic activity I3– reduction. Due to metallic conductivity of Ni...

Abstract Steel‐fiber‐reinforced plastics composite bars (SFCBs) are a new material that can effectively solve the problems of low stiffness and poor ductility in fiber‐reinforced (FRP)‐reinforced concrete members. To study flexural performance SFCB beams, testing test beams is carried out this study, failure mode studied detail. The results indicate process SFCB‐reinforced be divided into three main stages: elastic, cracking, failure. Due to presence external fiber layers, load‐carrying...

To provide multifunctional polymer consumables for 4D printing and a new methodology utilizing waste cooking oil (WCO), type of photocurable resin based on WCO was synthesized. This WCO-based contained epoxy methacrylate, which is derived from WCO, along with 2-phenoxyethyl acrylate (PHEA) methacrylic acid (MAA) as monomers, were obtained light-curing 3D printer. The comprised polymeric network constructed by PHEA segment, MAA segment. It displayed high flexibility (elongation at break:...

Monitoring and controlling the drying process is crucial, particularly for rotary dryers, to ensure optimal quality efficiency. However, due process's nonlinear behavior, delays, input disturbances, achieving this can be quite challenging. Previous research has not adequately explored online forecasting dryer control in real production settings. To bridge gap, our study focuses on tobacco an actual plant presents a novel prediction model moisture content. We conducted comparative experiments...

To evaluate the efficacy of biochelators for phytoremediation cadmium (Cd), effects (humic acid, HA; polyaspartic PASP; rhamnolipid, RLs) and synthetic chelator (sodium tripolyphosphate, STPP) on growth, accumulation, antioxidant index Cd were investigated in Iris sibirica L. The results indicated that addition HA increased dry weight leaves stems, PASP, RLs, STPP growth but inhibited stems. determination accumulation decreased content all tissues, while stems roots. In addition, superoxide...

In order to improve the brittle characteristics of coral cement-based composites and increase their toughness, an experimental study was carried out on basic mechanical properties PVA (polyvinyl alcohol) fiber-reinforced composites, taking into account fiber content length-to-diameter ratio (L/D). The results showed that fibers can effectively concrete, especially its tensile strength. At same time, improved damage had obvious toughening brittleness reduction effects. fibers, with a volume...

Abstract In this paper, the shear behavior of glass fiber reinforced polymer (GFRP) bars ultra‐high‐performance concrete (UHPC) beams was investigated through experimental tests. Eight GFRP UHPC I‐beams were tested until failure with various stirrup ratio, reinforcement and span to depth ratio. The capacity, load–deflection relationship, cracking pattern, mode in detail. results show that ratio has greatest influence on capacity beam among three parameters, followed by configuration can...

Abstract Echo state network (ESN) possesses advantages such as simple structure, ease of training, and reliable prediction performance, making them widely applied in the field time series prediction. Selecting optimal reservoir parameters is a key issue ESN research, it determines effectiveness prediction, crucial to design an efficient optimization method for parameter optimization. This paper introduces improved version dung beetle optimizer (IDBO), which employs various strategies enhance...

A fatty acid wax based on waste cooking oil was synthesized and could be a lower-cost alternative of commercial soybean wax.

The modern power grid is a cyber-physical system. While the becoming more intelligent with emerging sensing and communication techniques, new vulnerabilities are introduced cyber security becomes major concern. One type of cyber-attacks - False Data Injection Attacks (FDIAs) exploits limitations in traditional system state estimation, modifies states without being detected. In this paper, we propose physics-guided deep learning (PGDL) approach to defend against FDIAs. PGDL takes real-time...

Time series is a ubiquitous data existed in different domains including finance, medicine, business and other industrial fields. Recently, time mining attracts much attention. In this paper, we propose multilayer piecewise aggregate approximation (MPA) to measure the Similarity of series. The proposed method constituted two parts: multi-level segment based on extreme value used extract important identification sub-series And transform features from so as reduce dimension. After that, dynamic...

Impermeable pavements and roofs in urban areas convert most rainfall to runoff, which is commonly discharged local sewers pipes finally the nearby streams rivers. In case of heavy rain, peak flow runoff usually exceeds carrying capacity sewer pipes, leading flooding. Traditional facilities, such as green roofs, permeable pavements, soakaways, rainwater tanks, rain barrels, others reduce volume a small but fail rain. Here we propose novel buffer tank detain from sealed surfaces then discharge...

In this study, dynamic triaxial cyclic tests were conducted to examine the liquefaction properties and post‐liquefaction volumetric strain of calcareous sand from a dredger fill site in midst islands reefs South China Sea. The test results indicated that there some differences micromorphology composition between obtained via dredging natural sand. Axial stress attenuation can lead higher vibration than actual vibration, modified method eliminate effect axial attenuation. Saturated liquefies...

The rapid development of financial markets make the data variability and unpredictability, abnormal fluctuations in often contain important information. Financial is generated over time, so time series mining method widely used anomaly detection. traditional detection to find out one biggest point outliers from a randomly numbers. It do not consider sequence series, concern only unusual data, but sub-sequences This paper presents that combines activity density series. uses sub-sequences'...