Improvement of anti-swelling property and anticorrosion performance of epoxy coatings by the introduction of nanocrystalline cellulose composite.

In this work, the effect of nanocrystalline cellulose (NCC) as a nanofiller on the corrosion protection of epoxy resin coatings was examined. To solve problems like poor solvent swelling resistance and micropore formation during the solidification and shrinkage of epoxy resin coatings, NCC was modified with a silane coupling agent. Alkyl chains and active amine groups were grafted onto its surface, improving the dispersibility of NCC in organic solvents and its bonding with epoxy resin.

Plasmonic Nanomaterials for Versatile Solar Energy Conversion Applications.

Solar thermal conversion technology, as an emerging solar energy harvesting strategy, has attracted much attention in many application areas. In this field, plasmonic materials have a strong application potential owing to their localized surface plasmon resonance. The use of plasmonic materials with extensive solar energy absorption, combined with their practical applications, provides new routes for realizing efficient photothermal conversion in multidisciplinary applications.

Ca-Affinitive and Non-Ca-Affinitive Synaptotagmins in Human Pan-cancer.

Synaptotagmins (Syts) are a family of crucial Ca sensors for cellular secretions, while half of the Syt isoforms are evolutionarily non-Ca-affinitive, which are less studied but associated with several neuro-system diseases. Some Syt isoforms exhibited importance in specific cancer types, but a comprehensive study of all Syts in pan-cancer is lacking. Here, using informatics tools and proteome/transcriptome databases, the expression, phosphorylation, CpG methylation profiles, and the correlation with genome heterogeneity, tumor stemness, and immune infiltration of all human Syts are analyzed in human pan-cancer, resulting in significant associations of each Syt in various types of cancer, including pathological stage and prognosis.

Advances in Polypyrrole Nanofiber Composites: Design, Synthesis, and Performance in Tissue Engineering.

This review is different from previous studies focusing on polypyrrole (PPy) in universal fields such as sensors and supercapacitors. It is the first TO systematically review the specific applications of PPy-based electrospun nanofiber composites in the biomedical field, focusing on its biocompatibility regulation mechanism and tissue repair function. Although PPy exhibits exceptional electrical conductivity, redox activity, and biocompatibility, its clinical translation is hindered by processing challenges and poor degradability.

Polyether Demulsifier Complexes for Efficient Demulsification of Water-in-Heavy Oil Emulsions.

In the production process of the heavy oil industry, efficiently demulsifying water-in-heavy oil (W/HO) emulsions can effectively prevent the negative effects of emulsion corrosion on equipment, increase costs, reduce oil quality, and pollute the environment. Herein, polyether demulsifier complexes (PDC) were obtained by compounding fatty alcohol nonionic polyether (FAP) with perfluoropolyether (PFPEA, [CFO(CFCFO)CF]) through a simple physical blending method. The experimental results demonstrate that PDC exhibited outstanding demulsification performance for W/HO emulsions across varying temperatures: At 60 °C and 400 ppm dosage, PDC achieved complete dehydration (100%) within just 2 min, showing significantly faster demulsification kinetics compared to FAP and PFPEA.

Bio-Signal-Guided Robot Adaptive Stiffness Learning via Human-Teleoperated Demonstrations.

Robot learning from human demonstration pioneers an effective mapping paradigm for endowing robots with human-like operational capabilities. This paper proposes a bio-signal-guided robot adaptive stiffness learning framework grounded in the conclusion that muscle activation of the human arm is positively correlated with the endpoint stiffness. First, we propose a human-teleoperated demonstration platform enabling real-time modulation of robot end-effector stiffness by human tutors during operational tasks.

Research on the Performance of Modified Nanocrystalline Cellulose Reinforced Waterborne Epoxy Coatings.

This study addresses the critical challenges of long-term protection and mechanical stability in waterborne epoxy resin (WEP) coatings by developing composite systems reinforced with modified nanocrystalline cellulose (NCC). Through surface functionalization of NCC using hexadecyltrimethoxysilane (HDTMS) and -[3-(trimethoxysilyl)-propyl]-ethylenediamine (TMPEDA), we synthesized Si-NCC/WEP coatings with enhanced interfacial compatibility and tailored physicochemical properties. Comprehensive characterization via FTIR, AFM, and EIS revealed that the 1% Si-NCC/WEP coating exhibited optimal performance, achieving a 251% increase in Young's modulus (6.

Dynamics of Sqle under electric field exposure.

Squalene epoxygenase (Sqle) serves as an FDA-approved anti-tumor target, with its expression down-regulated following exposure to direct current electric fields. However, the underlying mechanisms remain unclear. This study investigates the structural modifications of Sqle proteins under a range of electric field intensities (0 V/nm ≤ E ≤ 1 V/nm) using molecular dynamics (MD) simulations.

Study on tunnel ventilation and pollutant diffusion mechanism during construction period.

Ventilation technology is an important means to ensure effective control of pollutant concentration and safe production during tunnel drilling and blasting construction. This study combines theoretical derivation, numerical simulation, and mathematical statistics to explore the extraction of flow field distribution characteristics and pollutant transport and diffusion mechanisms in tunnels. The research results indicate that the instability and turbulence effects of fluids work together to form a vortex zone near the tunnel working face.

Construction of ion/electron transfer multi-channels for the composite film electrode from GO and cellulose derived porous carbon in supercapacitor.

Due to excellent flexibility and dispersibility, 2D graphene oxide (GO) is regarded as one of the prospective materials for preparing self-supporting electrode material. Nevertheless, the self-stacking characteristic of GO significantly restricts the ion transmission and accessibility in GO-based electrodes, especially in the direction perpendicular to the electrode surface. Herein, a novel composite film was fabricated from GO and 3D porous carbon (PC) through vacuum filtration combined with thermal reduction strategy.

Polypyrrole Derivatives: Preparation, Properties and Application.

Polypyrrole (PPy) has attracted widespread attention due to its excellent environmental stability, high conductivity, simple synthesis, good biocompatibility, and reversible redox properties. PPy derivatives not only inherit the advantages of polypyrrole, but also have some unique properties. The side and N-site substitution of PPy can not only yield polymers with good solubility, but it also endows polymers with special functionalities by controlling the introduced functional groups.

Selfie-loving mothers and children in China: The relationship between the selfie-related behaviors of mothers and adolescents' cosmetic surgery consideration.

The current study examined the relationship between mothers' selfie-related behaviors and adolescents' cosmetic surgery consideration, as well as the mediating effects of the adolescents' selfie-related behaviors, body surveillance, and facial dissatisfaction. A total of 541 mother-child dyads with adolescents averaging 16.55 years old, was recruited.

Light Addressable Potentiometric Sensors for Biochemical Imaging on Microscale: A Review on Optimization of Imaging Speed and Spatial Resolution.

Light addressable potentiometric sensors (LAPS) are a competitive tool for unmarked biochemical imaging, especially imaging on microscale. It is essential to optimize the imaging speed and spatial resolution of LAPS since the imaging targets of LAPS, such as cell, microfluidic channel, etc., require LAPS to image at the micrometer level, and a fast enough imaging speed is a prerequisite for the dynamic process involved in biochemical imaging.

Efficient and selective capture of Au(III) from PCBs by pentaethylenehexamine-modified chloromethylated polystyrene beads.

Recycling of gold promotes solving the problems of resource waste and environmental pollution. In this work, pentaethylenehexamine (PEHA)-modified chloromethylated polystyrene beads (PEHA-CMPS) was synthesized for the recovery of Au(III) from actual printed circuits boards (PCBs) leaching solution. PEHA-CMPS exhibited excellent adsorption efficiency at a wide pH range.

A novel image noise reduction method for composite multistable stochastic resonance systems.

In the field of digital signal processing, image denoising is an more and more significant research direction. For the traditional noise reduction theory, noise is considered to be harmful, and the image quality can be improved by analyzing noise characteristics and filtering noise. The appearance of stochastic resonance theory proves that noise can be used to enhance signal, which brings new inspiration to image processing.

High-Temperature Response Polylactic Acid Composites by Tuning Double-Percolated Structures.

Due to the properties of a positive temperature coefficient (PTC) effect and a negative temperature coefficient (NTC) effect, electrically conductive polymer composites (CPCs) have been widely used in polymer thermistors. A dual percolated conductive microstructure was prepared by introducing the polybutylene adipate terephthalate phase (PBAT) into graphene nanoplatelets (GNPs)-filled polylactic acid (PLA) composites, intending to develop a favorable and stable PTC material. To achieve this strategy, GNPs were selectively distributed in the PBAT phase by injection molding.

Biomass-Derived Carbon Dots and Their Sensing Applications.

Carbon dots (CDs) can be widely used in the field of sensing because of its good water solubility, low toxicity, high fluorescence stability and excellent biocompatibility. It has become a popular trend to prepare high-value, inexpensive, renewable and environmentally friendly CDs sensors from biomass resources. This article reviewed the research progress of biomass-derived CDs as chemical, physical and biological sensors in recent years and studied their preparation processes and sensing abilities.

Influence of Extrusion Temperature on Properties of Graphene Oxide-Carbon Fiber/Epoxy Composite Prepared by Vacuum Infiltration Hot-Press-Forming Experimental System.

Graphene oxide-carbon fiber/epoxy (GO-CF/EP) composites with extrusion temperatures of 30, 40, 50, 60 and 70 °C were prepared by a vacuum infiltration hot-press-forming experimental system (VIHPS). The effects of extrusion temperature on the microstructure, fracture mechanism and mechanical properties of GO-CF/EP composites were investigated. It was found that the best mechanical property of composites and infiltration effect of the matrix in the fiber gap were obtained at the temperature of 50 °C, and the bending strength of the composite reached 728 MPa.

Characteristics of a Cavitating Spoiler Mixing Device and Its Performance in a Foam Dust Suppression System.

The unsteady foaming-agent mixing ratio in traditional foam-dust-suppression technology limited the dust suppression efficiency. Recent studies proved that the steady mixing ratio could be guaranteed by keeping the jet pumps or Venturis working under cavitation conditions, but the pressure loss of the current devices was over 50%. To decrease the pressure loss under cavitation conditions, we proposed a new mixing device by introducing a spoiler in the Venturi structure.

Properties and Fabrication of Waterborne Polyurethane Superhydrophobic Conductive Composites with Coupling Agent-Modified Fillers.

The addition of abundant fillers to obtain conductive and superhydrophobic waterborne polyurethane (WPU) composites generally results in increased interfaces in the composites, leading to reduced adhesion and poor corrosion resistance. Fillers such as Polytetrafluoroethylene (PTFE) and multi-walled carbon nanotubes (MWCNTs) were first treated by a coupling agent to reduce the contents of the fillers. Thus, in this work, WPU superhydrophobic conductive composites were prepared using electrostatic spraying (EsS).

Recent Advances in Metal/Alloy Nano Coatings for Carbon Nanotubes Based on Electroless Plating.

A large number of researches on the electroless plating of carbon nanotubes and their applications after plating have emerged, which has attracted more and more attention. In this review article, the existing electroless plating methods for carbon nanotubes were briefly summarized, and the surface coatings were listed and analyzed in detail. At last, the related applications after electroless metal/alloy coatings of carbon nanotubes were discussed in detail.

Pressure-Induced Self-Interlocked Structures for Expanded Graphite Composite Papers Achieving Prominent EMI Shielding Effectiveness and Outstanding Thermal Conductivities.

High-performance films via layer-by-layer assembly of two-dimensional (2D) materials would provide all possibilities for the development of modern integrated electronics. However, the stacked structure between nanosheets and large-scale fabrication still remain a great challenge. Herein, FeO/expanded graphite (EG) papers are fabricated via in situ oxidation of ferrocene onto EG nanosheets, followed by a continuous roll-in process.

All-solid-state Z-scheme AgPO/CSs/AgBr heterostructures for efficient visible-light photocatalysis and the photocatalytic mechanism.

A novel solid-state Z-scheme photocatalyst AgPO/CSs/AgBr (carbon spheres, CSs) was rationally designed and successfully synthesized a facile hydrothermal coprecipitation reaction. AgBr and AgPO were effectively loaded on the surface of the CSs and AgPO/CSs/AgBr showed wide visible light absorption and superior photocatalytic performance. On the basis of ultraviolet photoelectron spectroscopy (UPS) analysis and scavenger reactions, a possible photocatalytic reaction mechanism for AgPO/CSs/AgBr is proposed.

Research on the quantum confinement effect and enhanced luminescence of red-emitting P-doped CaAlO:Mn,Mg phosphors.

Mn-activated oxide red phosphors are always a hot topic in the luminescent material field to solve the lack of red light components in white-light-emitting diodes (WLEDs). Herein, a series of novel deep red-emitting CaAlPO:0.01Mn,0.

[Design and Implementation of Intelligent Monitoring Collar for Potential Patients with Viral Pneumonia Based on DA14699 Chip].

In order to improve the level of epidemic prevention and control, and strengthen the observation and monitoring of potential patients with viral pneumonia in isolated state, a medical intelligent monitoring collar based on DA14699 Bluetooth low-power chip was proposed. DA14699 chip is used as the main controller in the design scheme, and the temperature, cough and location information of potential patients are recorded and analyzed by its high-efficiency wireless multi-core processing ability. The LIS3DH three-axis acceleration sensor is used to judge the cough symptoms.