Efficient activation of percarbonate by metal-free carbonylated activated carbon for green groundwater remediation: Performance, mechanism, applicability, and environmental implications.

Sodium percarbonate (SPC)-based advanced oxidation processes (AOPs) hold great promise for in-situ groundwater remediation. However, most existing studies have focused on the metal-carbon composite activation systems, facing the risk of secondary pollution from metal ion leaching. Herein, this study innovatively prepared metal-free carbonylated activated carbon (CAC) by regulating the conversion of oxygen-containing functional groups on carbon materials to activate SPC efficiently.

Thermodynamic Modulation by Micro-Nanobubbles Stimulate Hydroxyl Radical Production during O Reduction by Aqueous Fe(II) for Sustainable Water Remediation.

Ferrous iron (Fe(II)) species are prevalent in reductive subsurface environments, where some active Fe(II) species can generate hydroxyl radical (·OH) during oxidation under O perturbation, facilitating pollutant attenuation. However, aqueous Fe(II), a common form of ferrous iron, can be rapidly oxidized but scarcely contributes to ·OH production. Herein, this study proposes a thermodynamic control strategy by introducing micro-nanobubbles (MNBs) into an aqueous Fe(II)/O system to stimulate its potential.

Tailoring lignocellulose-derived biochar for peroxymonosulfate-based catalytic environments: Optimizing active sites, revealing activation mechanisms, and advancing groundwater remediation applications.

Biochar derived from lignocellulosic biomass (LB) has shown broad application prospects in the field of peroxymonosulfate (PMS) catalysis, but the regulation mechanism of its catalytic active sites (e.g., C=O group) and LB components (cellulose, hemicellulose, and lignin) remains to be systematically elucidated.

Fe/N modified porous carbon nanofibers with encapsulated FeCo nanoparticles for efficient electrocatalytic nitrate reduction to ammonia.

The efficient electrocatalytic nitrate (NO) reduction to ammonia (NRA) offers a sustainable alternative for both environmental remediation and ammonia synthesis. Developing advanced electrocatalysts with rationally designed spatial arrangement of active sites and optimizing the synergetic effect among components are crucial for high efficiency and selectivity. Herein, we present Fe/N active sites decorated on porous carbon nanofibers (CNFs) with encapsulated FeCo nanoparticles (FeCo@CNFs-Fe/N) as electrocatalysts for NRA.

Modification of Biochar Catalyst Using Copper for Enhanced Catalytic Oxidation of VOCs.

Recently, research has increasingly focused on the introduction of non-precious metals and developing highly stable carriers to enhance catalyst performance. In this study, we successfully synthesized copper (Cu)-modified biochar catalysts utilizing a sequential approach involving enzymatic treatment, liquid impregnation, and activation processes, which effectively enhanced the dispersion and introduction efficiency of Cu onto the biochar, thereby reducing the requisite Cu loading while maintaining high catalytic activity. The experimental results showed that the toluene degradation of 10%Cu@BCL was three times higher than that of unmodified activated carbon (AC) at 290 °C.

Assessment of the public health risk of novel reassortant H3N3 avian influenza viruses that emerged in chickens.

Influenza A (H3N2) viruses are historically responsible for the 1968 Hong Kong flu pandemic. Since then, H3N2 has continued to circulate as a seasonal influenza virus in humans. Public health concerns were raised in 2022 when human infections with novel reassortant H3N8 influenza viruses originating from chickens were first reported in China.

Factors Influencing the Indwelling Time of Retrievable Inferior Vena Cava Filters in Fracture Patients With Deep Vein Thrombosis: A Retrospective Cohort Study.

Aim: To investigate factors influencing the indwelling time of retrievable inferior vena cava filters (IVCFs) in fracture patients with deep vein thrombosis (DVT), particularly comparing Denali and Cordis filters and analyzing the impact of thrombus location and patient characteristics.

Methods: A retrospective cohort study was conducted from June 2017 to December 2021 at Shenyang Orthopedic Hospital, China. We analyzed 802 patients with fractures and acute DVT who underwent successful IVCF retrieval.

Improving Tribological Performance of Poly(phenylene sulfide) by Incorporating PTFE Fillers: The Influence of Filler Type and Concentrations.

Poly(phenylene sulfide) (PPS) is a high-performance thermoplastic engineering material with excellent comprehensive performance that finds application in many fields due to its good processability, excellent heat resistance, and mechanical properties. However, the poor friction and wear properties of PPS limit its wide application in industrial sectors. In this work, polytetrafluoroethylene (PTFE) was adopted as the solid tribo-modifier to improve the tribological performance of PPS.

Preparation of polylactic acid/chitosan oligosaccharide films loaded metal-organic framework composite L-theanine and eugenol and its antibacterial and antioxidant properties.

In this study, based on the porous characteristics of the metal-organic framework, the inclusion complex of L-theanine (L-the) and Eugenol (Eug) was prepared, and polylactic acid (PLA)/chitosan oligosaccharide (CSO) was used as polymer scaffold to fabricate fibrous films by electrospinning. The results showed that with the addition of inclusion complexes, the solution viscosity and the diameter of the fiber increased, the thermal stability improved, hydrophobicity enhanced, water vapor permeability reduced, mechanical properties destroyed, and brittleness increased. The surface of the plate inhibition zone showed a high inhibition effect on Escherichia coli (E.

Non-coding RNA in cartilage regeneration: regulatory mechanism and therapeutic strategies.

The pathogenesis of cartilage injury and degeneration is exceptionally complex. In addition to being associated with osteoarthritis and trauma, factors such as age, gender, obesity, inflammation, and apoptosis of chondrocytes are also considered significant influencing factors. Due to the lack of direct blood supply, lymphatic circulation, and neural innervation, coupled with low metabolic activity, the self-repair capability of cartilage after injury is extremely limited, making its treatment quite challenging.

Degradation-Resistant Biochar Improves Soil Organic Carbon Storage: Promoting Autotrophic Metabolism & Increasing Refractory Organic Carbon.

Biochar, as a soil amendment to enhance soil carbon sink, is a dual-effect carbon neutralization technology. However, the dissolved solids released from biochar not only shorten the duration of carbon sequestration but also diminish its efficacy on improving soil carbon fixation. In this study, biochar prepared from cellulase-treated lignocellulose (BC-SR) was utilized to address the defect.

Injectable photosensitive bone cement enhancing angiogenesis and osteogenic differentiation for the treatment of bone nonunion.

Nonunion fractures present a significant clinical challenge because of their complex microenvironment, which includes poor vascularization, insufficient osteogenesis, infection, and separation of fracture ends. The current clinical treatments have certain limitations. Inspired by this phenomenon, sandcastle worms secrete adhesive proteins that bind sand grains, shell fragments, and mineral particles, thereby constructing their "castles.

Distributed observer-based prescribed-time affine formation control for underactuated unmanned surface vessels under DoS attack.

This study addresses the control challenges of distributed prescribed-time maneuvers for underactuated unmanned surface vessels (USVs) operating in affine formation under adverse conditions, including ocean disturbances, unmodeled dynamics, and denial-of-service (DoS) attacks. The research develops a control scheme that enables USVs to perform complex maneuvers such as translation, shearing, rotation, and scaling, despite intermittent communication failures due to periodic DoS attacks. The approach integrates a distributed prescribed-time observer (DPTO) for each vessel to monitor local time-varying desired states, coupled with an adaptive prescribed-time local tracking control (APTLTC) strategy that drives the USV to track the desired states.

Descriptive Comparative Transcriptomic Analysis of Genotype IV SHEV ORF3-Expressing HepG2 Cells.

Swine hepatitis E (HEV) is a zoonotic infectious disease caused by the swine hepatitis E virus (SHEV). Open reading frame 3 (ORF3) is a key virulence factor in swine HEV, playing a crucial role in the release of viral particles, the modulation of the host innate immune response, and regulation of autophagy and apoptosis, etc. However, its main function and pathogenic mechanism remain incompletely understood.

Experimental and Computational Study on U(VI) Sorption Mechanisms of Single-Layered TiCT Nanosheets.

Environmental contamination by U(VI) from radioactive wastewater has become a challenging concern in the development of nuclear energy. A highly efficient recovery of U(VI) from wastewater is essential for environmental remediation and can mitigate the depletion of conventional uranium resources. This study describes the synthesis of single-layered TiCT nanosheets by chemical exfoliation using ultrasonography.

Predicting trichloroethene attenuation in aquifers with reduced iron minerals under oxygen perturbation: From kinetic model to reactive transport model.

Pollutant attenuation in aquifers due to the reactivity of in situ reduced iron minerals (RIM) under dynamic redox conditions has gained popularity because of its value in designing green and sustainable strategies for soil and groundwater remediation. In this study, a novel approach that integrates RIM-based kinetic modeling in reactive transport modeling was initiated to predict trichloroethene (TCE) attenuation in RIM-containing aquifers. The kinetic model was optimized and simplified based on previous efforts and verified with data from batch experiments (R > 0.

[Construction of a recombinant strain expressing SpaA and CbpB of and evaluation of the strain immunogenicity in a mouse model].

To construct a recombinant strain expressing SpaA and CbpB of for oral administration, we constructed the recombinant plasmid pDG1730-CBJA by fusion PCR and seamless cloning. The plasmid was introduced into . KC strain by natural transformation, and the recombinant strain KC-- was screened out on the plate containing spectinomycin () and confirmed by PCR and starch degradation test.

An effective classification approach for EEG-based motor imagery tasks combined with attention mechanisms.

Currently, electroencephalogram (EEG)-based motor imagery (MI) signals have been received extensive attention, which can assist disabled subjects to control wheelchair, automatic driving and other activities. However, EEG signals are easily affected by some factors, such as muscle movements, wireless devices, power line, etc., resulting in the low signal-to-noise ratios and the worse recognition results on EEG decoding.

mediates autophagy, inflammation, and apoptosis to escape host killing.

Brucellosis is a serious zoonosis caused by spp. infection, which not only seriously jeopardizes the health of humans and mammals, but also causes huge economic losses to the livestock industry. is a Gram-negative intracellular bacterium that relies primarily on its virulence factors and a variety of evolved survival strategies to replicate and proliferate within cells.

Ecologically friendly remediation of groundwater sulfamethoxazole contamination: Biologically synergistic degradation by thermally modified activated carbon-activated peracetic acid in porous media.

This study examines the efficacy and environmental impact of peracetic acid (PAA) activated by thermally modified activated carbon (AC600) for degrading antibiotics in actual groundwater. Laboratory-scale experiments evaluated the system's effects on contaminant degradation, ecological balance, and substance cycling in the hyporheic zone. Our findings demonstrated the effectiveness of the AC600/PAA system in removing sulfamethoxazole (SMX) from groundwater porous media.

In-situ algal control by two-stage nanobubble technology in Taihu Lake: Efficacy and ecological impact.

Hydrodynamic cavitation and ozone nanobubble-coupled hydrodynamic cavitation have demonstrated effective algae control in laboratories, but their in-situ potential, especially impact on nutrient salt degradation and microbial communities remain unclear. This study applied two-stage nanobubble technology, combining hydrodynamic cavitation and ozone nanobubbles, in a 3300 m semi-enclosed area of Taihu Lake to address these gaps. Results show that the technology efficiently controls algae, reduces odors, improves anaerobic conditions, and lowers ammonia nitrogen.

Effects of cellulase treatment on properties of lignocellulose-based biochar.

As the most abundant renewable carbon source, lignocellulose holds potential as a raw material for biofuels and biochar. The components required for biofuel production differ from those for biochar, so combining processes can reduce costs. Biofuel preparation necessitates cellulase treatment of lignocellulose.

Photocatalytic Extraction of Uranium from Seawater Using Covalent Organic Framework Nanowires.

In the push to achieve net-zero emissions by 2050, nuclear power will play an essential role alongside renewable wind and solar power, and correspondingly global interest and investment in this well-established technology is accelerating. The uranium present in seawater could support nuclear power generation for centuries, but traditional adsorptive separation strategies have proven ineffective for the selective extraction of uranium from this vast resource. Here, we report the synthesis of nanowires of a triazine-linked two-dimensional covalent organic framework via a solvent modulation approach, which can be used to access nanowire external diameters ranging from 50 to 200 nm.