A bioinspired piezoelectric stick-slip actuator designed by the moving posture of monkey.

A novel structure of a piezoelectric stick-slip actuator is proposed, which is based on the moving posture of a monkey. The biomimetic monkey type of piezoelectric stick-slip actuator (BMPSSA) is designed to simulate the limbs and tail of a moving monkey. By using the pseudo-rigid body method, the deformation model of the compliant mechanism is established.

Significantly enhanced breakdown strength and energy density performances of methyl methacrylate--glycidyl methacrylate nanocomposites filled with BNNs@PDA-Ag hybrid structures.

Electronic capacitor films based on polymer matrices and inorganic nanofillers capable of storing more energy play a crucial role in advanced modern electrical industries and devices. Herein, a series of nanocomposite films composed of "core-shell-dot" BNNs-PDA@Ag hybrid structures with multiple breakdown strength enhancement mechanisms as fillers and methyl methacrylate--glycidyl methacrylate (MG) copolymers as matrices were successfully synthesized. The introduced 2D and wide-bandgap BNNs not only enhanced the breakdown strength by taking advantage of their excellent physical properties, but also further improved their energy storage properties both at ambient and elevated temperatures through the formation of deeper traps at the organic-inorganic interface.

Event-triggered optimal control for modular reconfigurable manipulators with input constraints based on model predictive control.

This paper proposes an event-triggered optimal control method for modular reconfigurable manipulators(MRMs) based on model predictive control(MPC). By using a decentralized optimization method based on MPC, the optimal control problem of MRMs is transformed into independent optimization tasks for each module, while a global MPC optimization framework is utilized to coordinate the modules, ultimately optimizing the overall performance of the entire system. In order to avoid the safety hazards caused by excessive torque, hyperbolic tangent function is added to constrain the input torque.

Trimetallic synergy-enhanced multidimensional composite separator for high-rate lithium-sulfur batteries.

The practical application of lithium‑sulfur (LiS) batteries is often restricted by the uncontrolled diffusion of lithium polysulfides (LiPSs) and their intrinsically sluggish redox kinetics. To address these limitations, we designed a multidimensional composite separator by anchoring Zn-Co-Ni-S nanocrystals onto alkalized two-dimensional transition metal carbide/nitride (MXene) nanosheets, followed by the incorporation of one-dimensional carbon nanotubes (CNTs), yielding a robust and highly conductive interfacial architecture. This multidimensional configuration combines physical confinement, strong chemisorption, and catalytic enhancement to regulate sulfur redox behavior effectively.

Metal Porphyrin-Terminated Hyperbranched Polyimides for Resistive Switching in Nonvolatile Memory Devices.

Polymer resistive random-access memory (RRAM) holds great promise for flexible wearable electronics and artificial intelligence, yet its development is hindered by chain entanglement and intermolecular interactions, leading to processing challenges, high operating voltages, and unstable switching parameters. Herein, metal-porphyrin-terminated hyperbranched polyimides (ATPP@HBPI, (Zn)ATPP@HBPI, and (Cu)ATPP@HBPI) were synthesized. The hyperbranched structure mitigates intermolecular interactions, while ionic doping modulates conductivity, and the synergistic effect of ions and electrons optimizes resistive switching behavior.

VM-Unet enhanced with multi-scale pyramid feature extraction for segmentation of tibiofemoral joint tissues from knee MRI.

In medical imaging diagnosis, accurate segmentation of the knee joint can help doctors better observe and diagnose lesions, thereby improving diagnostic accuracy and treatment effectiveness. Vision Mamba mainly relies on the State Space Model (SSM) for feature modeling, which excels at capturing global contextual information but cannot capture local texture features. Moreover, features of different scales are not effectively integrated, resulting in the model's weak segmentation ability on small-scale tissues (such as cartilage areas).

Preparation and Immunogenicity Evaluation of a Ferritin-Based GnRH Nanoparticle Vaccine.

: Research on the immunocastration vaccine is of great significance for animal management. In this study, the gonadotropin-releasing hormone (GnRH) ferritin nanoparticle vaccine was constructed using Spy Catcher-Spy Tag (SC-ST) as a delivery system; : The Spy Catcher was constructed to fuse with the expression vector pET-30a-SF of ferritin nanoparticles. Two polypeptides, STG1: Spy Tag-GnRH I-PADRE and STG2: Spy Tag-GnRH I-GnRH II, coupled to SF in vitro to form two nanoparticles, were designed and synthesized to detect castration effects in mice.

Insights into the reaction process and mechanism of CNT growth from -hexane on Fe-based catalysts.

Due to their outstanding physicochemical properties, carbon nanotubes (CNTs) have been widely studied and applied in the nanoscience and nanotechnology fields. Herein, Fe-based catalysts were prepared by the impregnation method using AlO, SiO, ZrO, TiO and SnO supports and were used for CNT synthesis from -hexane under different reaction times and temperatures. It was found that the metal-support interaction and FeO particle size of Fe-based catalysts regulated CNT growth.

Strategic Leverage of β-OH Elimination for Catalytic Assembly of Alkylidenecyclopropanes.

We report the transition-metal-catalyzed synthesis of ACP from readily available cyclopropenyl α-carbon alcohols and their -alkyl ethers a catalytic addition-elimination strategy. The Rh-catalyzed arylation (alkenylation) and Ni-catalyzed borylation and silylation proceed OH (OR)-directed addition with subsequent OH (OR) elimination events to deliver various functionalized ACPs (FACPs) with broad functional group compatibility and good to high yields. The products serve as a synthetic linchpin for more elaborate scaffolds such as cyclopropyl alcohol, skipped halogenated diene, 2-naphthalene, indene, etc.

Does Fluorination Necessarily Lead to Efficiency Gains in Non-fullerene-Based Organic Solar Cells? A Theoretical Exploration.

Fluorination of donors and acceptors has been recognized as an effective strategy to enhance the power conversion efficiency (PCE) of organic solar cells. However, improper fluorination may weaken the effect. Specifically, we identify that the stable active-layer cluster structures obtained after the annealing of the / combination with fluorination and the / combination without fluorination not only enhance the intermolecular interactions within the cross-linked structures but also improve donor-acceptor energy level alignment and achieve near-neutral average electrostatic potential distributions.

Polypropylene-Based Dielectrics for High-Temperature and High-Field Capacitive Energy Storage via Radiation Melt Grafting Synergies.

At present, there is an immediate necessity for the development of polymer-based capacitor films that can maintain excellent energy storage performance in harsh environments, such as elevated temperatures and powerful electric fields. In this study, polypropylene grafted hydroxyethyl methacrylate (PP--PHEMA) composite films with varying grafting contents were successfully prepared using high-energy electron beam irradiation and the melt grafting method, which significantly enhanced the dielectric and high-temperature energy storage properties of the polymer films. Experimental tests and computational simulations confirmed that grafted PHEMA introduced deeper trap energy levels and restricted the migration of many charge carriers, while diminishing the impact of high-energy electrons on the molecules, thus enhancing the breakdown strength and energy storage density of the films.

Predicting the therapeutic efficacy of uterine artery embolization for adenomyosis using a combined model based on MRI radiomics and clinical characteristics.

Objective: Prediction of the therapeutic efficacy of uterine artery embolization (UAE) for adenomyosis (AM) using an MRI-based radiomics model combined with clinical characteristics.

Methods: A retrospective analysis was conducted on 126 patients with AM who underwent UAE at the Interventional Radiology Department of the Second Affiliated Hospital of Soochow University. Radiomics features were extracted from uterine lesions using axial T-weighted imaging with fat suppression (TWI-FS) sequences obtained prior to treatment.

Electrostatic potential matching guided ultra-microporous COF-300 for CH/CO separation with scale-up synthesis.

We achieved gram-scale synthesis of ultra-microporous COF-300 a one-pot method and demonstrated its potential for CH/CO separation guided by electrostatic potential matching principles. Gas adsorption simulations and experiments further corroborated the selective adsorption separation of CH/CO by COF-300. And, dynamic breakthrough curves validated the separation capability of COF-300 as an adsorbent, while density functional theory (DFT) calculations ultimately revealed the interaction mechanisms between the COF-300 adsorbent and gas molecules.

Optimization of the monoclonal antibody 3E1 through W32I mutation enhances antiviral efficacy against influenza virus subtypes H1N1 and H3N2.

The influenza virus has caused a global pandemic with significant morbidity and mortality, underscoring the need to optimize antibodies for improved antiviral efficacy. The monoclonal antibody 3E1 effectively neutralizes Group 1 influenza subtypes, H1 and H5, by inhibiting acid-induced conformational changes of hemagglutinin (HA). However, its neutralizing activity is relatively weak against the Group 2 subtype, H3.

Study on the Damage Mechanisms in the Forming Process of High-Strength Steel Laser Tailor Welded Blanks Based on the Johnson-Cook Damage Model.

This paper, based on the Johnson-Cook damage model, investigates the damage mechanism of high-strength steel tailor welded blanks (TWBs) (Usibor1500P and Ductibor500) during the forming process. Initially, specimens with varying notch sizes were designed and fabricated to perform uniaxial tensile tests to determine their mechanical properties. Then, the deformation process of the notched specimens was simulated using finite element software, revealing the distribution and variation of stress triaxiality at the fracture surface.

Research on motion tracking and impact force detection of flying objects.

Our research primarily focuses on the detection methods for motion parameters and collision impact forces of flying objects. Firstly, we established a system designed to measure motion parameters and collision impact forces associated with airborne objects. A calibration experiment was performed on the binocular camera to guarantee swift and precise image capture across different flight modes of the object.

Flexible Iron-Ion Hybrid Capacitor Based on a MnO Electrode.

Aqueous Fe-ion hybrid capacitors, with high safety, low cost, and environmental friendliness, have attracted considerable attention as an emerging energy storage device. However, Fe-ion-based energy storage systems still face challenges, such as narrow voltage windows, limited energy density, and harsh fabrication conditions. To address these issues, this work fabricates an aqueous Fe-ion hybrid capacitor using low-cost activated carbon as the anode, manganese dioxide (MnO) as the cathode, with an FeSO + NHCl aqueous electrolyte, successfully expanding the voltage window to 0-1.

Polyoxometalate-Based Self-Healing Photochromic Smart Windows for Excellent Solar Heat Management.

With the increasing global demand for energy efficiency solutions, smart windows capable of controlling excess solar radiation and reducing electric energy usage have emerged as promising options and are undergoing substantial development. However, the use of smart windows is constrained by limitations associated with temperature regulation capabilities and damage upon accidental scratches. To overcome these obstacles, we introduce a method for creating transparent self-healing photochromic coatings by simply alternately depositing polyethylenimine (PEI)-polyoxometalate (POM) complexes and poly(acrylic acid) (PAA) on glass substrates.

Hand.-Mazz. derived extracellular vesicles alleviate mastitis NLRP3 inflammasome and NF-κB/MAPK pathways.

Mastitis, a prevalent inflammatory disease affecting both humans and animals, imposes significant health burdens globally. Hand.-Mazz.

Furfural Hydroconversion over Defective Pd/CeO Catalysts: More Oxygen Vacancies, Better Catalysis?

An in-depth, systematic exploration of the precise role of oxygen vacancies in catalytic reactions has long been limited by the lack of controllable regulation strategies for defect engineering. Herein, the oxygen vacancy properties of Pd/CeO-, prepared via electrostatic adsorption, are consecutively modulated by altering the reduction temperature, while palladium is stabilized at the atomic level. A volcano-type relationship between oxygen vacancy concentration and catalytic activity for furfural hydroconversion is revealed.

A smartphone-assisted dual-mode sensor based on GN-CDs for sensitive and portable detection of α-glucosidase.

The determination of the α-glucosidase (α-Glu) activity is crucial for the early screening of diabetes. However, traditional α-Glu detection methods mainly rely on a single-signal readout system, which is inevitably subjected to interference from a complicated detection environment. To address this practical issue, a fluorescence-colorimetric dual-mode sensor based on green-emitting nitrogen-doped carbon dots (GN-CDs) was designed for the sensitive and portable detection of α-Glu.

TiO-Based PVDF Integrated Photocatalytic Membrane with Excellent MB Dye Degradation Performance.

Photocatalytic technology has attracted great attention in environmental treatment in recent years due to its environmental friendliness. However, the commonly used photocatalyst TiO cannot effectively utilize visible light due to its wide bandgap, and the difficulty in recycling the powder catalyst limits the further development of photocatalysis. In this paper, we report a novel PVDF membrane loaded with TiO/GN/Ag NWs for photocatalytic degradation of MB dye wastewater in the presence of SA by simple vacuum filtration of the photocatalysts loaded on the PVDF membrane, the addition of GN and Ag NWs successfully shortened the band gap of the PVDF/SA/TiO membrane (3.

Grinding wheel wear evaluation with the PMSCNN model.

The grinding wheel wear significantly affects machining efficiency and machining quality. Consequently, the grinding wheel wear assessment model PMSCNN derived from the Convolutional Neural Network (CNN) and the Transformer model is presented. Firstly, the grinding wheel spindle motor current signal is measured using a current sensor.

Algal Surface-Inspired Chitosan-Modified Monodisperse Porous Polystyrene Microspheres: Pore Size Regulation and Adsorption Mechanism for Biopharmaceutical Wastewater.

Monodisperse porous polystyrene microspheres (PPS) and their derivatives were successfully fabricated via a two-step swelling polymerization approach combined with secondary cross-linking technology. Inspired by the surface morphology of algae, PPS and derivatives were subsequently modified using chitosan with different viscosities (CS-1 and CS-2), thereby constructing chitosan-functionalized PPS. By precisely adjusting the amounts of vinyl chloroacetate (VCA) and the cross-linker 1,4-bis(chloromethyl)benzene (XDC), the pore size of PPS and derivatives could be finely tuned within the range of 5-20 nm.

Sprayable Graphene Oxide-Based Superhydrophobic Coating with High Mechanical/Chemical Stability and Self-Healing Performance for Corrosion Protection of Mg Alloys.

This study introduces a robust, self-healing superhydrophobic coating for magnesium (Mg) substrates, leveraging the synergistic effects of MQ organosilicon polymer, octadecylamine (ODA), polydopamine (PDA), and copper-loaded graphene oxide (GO). The coating exhibits exceptional superhydrophobicity, outstanding stability in harsh environments, superior resistance to smudging, and effective self-cleaning capabilities. Electrochemical impedance spectroscopy (EIS) in 3.