Characteristics of heterotrophic endophytic bacteria in four kinds of edible raw vegetables: species distribution, antibiotic resistance, and related genes.

This study aimed to explore antibiotic resistance characteristics and species of heterotrophic endophytic bacteria (HEB) in four kinds of edible raw vegetables, including radishes, lettuces, onions, and tomatoes. A total of 144 HEB were isolated and tested for resistance to sulfamethoxazole (SMZ), tetracycline (TET), cefotaxime (CTX), and ciprofloxacin (CIP), and their species were identified by 16S rRNA gene sequencing. Antibiotic resistance genes (ARGs) and class I integron in antibiotic-resistant isolates were analyzed by polymerase chain reaction.

An Enhanced Feature-Fusion Network for Small-Scale Pedestrian Detection on Edge Devices.

Small-scale pedestrian detection is one of the challenges in general object detection. Factors such as complex backgrounds, long distances, and low-light conditions make the image features of small-scale pedestrians less distinct, further increasing the difficulty of detection. To address these challenges, an Enhanced Feature-Fusion YOLO network (EFF-YOLO) for small-scale pedestrian detection is proposed.

Application of Bivariate Reproducing Kernel-Based Best Interpolation Method in Electrical Tomography.

Electrical Tomography (ET) technology is widely used in multiphase flow detection due to its advantages of low cost, visualization, fast response, non-radiation, and non-invasiveness. However, ill-posed solutions lead to low image reconstruction resolution, which limits its practical engineering applications. Although existing interpolation approximation algorithms can alleviate the effects of the ill-posed solutions to some extent, the imaging results remain suboptimal due to the limited approximation capability of these methods.

Vacuum Filtration-Coated Silver Electrodes Coupled with Stacked Conductive Multi-Walled Carbon Nanotubes/Mulberry Paper Sensing Layers for a Highly Sensitive and Wide-Range Flexible Pressure Sensor.

Flexible pressure sensors based on paper have attracted considerable attention owing to their good performance, low cost, and environmental friendliness. However, effectively expanding the detection range of paper-based sensors with high sensitivities is still a challenge. Herein, we present a paper-based resistive pressure sensor with a sandwich structure consisting of two electrodes and three sensing layers.

Insights into the stability assessment and reaction mechanisms of Mn-oxide-containing adsorbents for As(Ⅲ) removal in filter columns: Migration laws and stabilization mechanisms of Mn element.

This study focused on two Mn-oxide-containing adsorbents for As(Ⅲ) removal, namely granular iron-manganese composite oxide (GFMO) and granular iron-manganese-copper composite oxide (GFMCO). The comparative experiments results demonstrated that GFMCO exhibited superior performance in As(Ⅲ) removal and a more obvious Mn(II) release compared to GFMO. Furthermore, this study explored the approaches for the control of manganese release during As(Ⅲ) removal, identifying sodium hypochlorite (NaClO) oxidation followed by manganese sand filtration as the most effective method for capturing released Mn(Ⅱ) in water.

Wet-spun Ag/PEDOT: PSS composite fibers for high-sensitive SERS sensing and high electrical conducting.

Nanometal-based composite fibers have been widely explored in flexible sensors due to their outstanding optical and electrical properties. However, the weak binding force between metallic nanomaterial and fiber greatly limits the real application. In this work, nano silver (Ag) are strongly bonded with poly(3,4-ethylenedioxythiophene)-poly (styrene sulfonate) (PEDOT: PSS) fiber by the wet-spun process.

Mechanism of rhamnolipid promoting the degradation of polycyclic aromatic hydrocarbons by gram-positive bacteria-Enhance transmembrane transport and electron transfer.

In this study, the Gram-positive bacterium Bacillus licheniformis T5 was utilized to investigate the impact of rhamnolipid on cell membrane and cell wall, as well as enzyme activity and electron transfer rate within cells. Results indicated that at the optimal concentration of rhamnolipid (200 mg/L), the cell membrane protein and cell wall peptidoglycan content of T5 decreased significantly. Infrared spectrum analysis and ultrastructure observations confirmed these findings, revealing noticeable changes in cell morphology in the presence of rhamnolipid.

Tracking the Aging-Induced Evolution in Self-Healing Capacities of Asphalt Binder: Microstructure and Rheology Analysis.

Asphalt pavement inevitably undergoes aging and deterioration of service performance under atmospheric and solar radiation conditions. This study developed an efficient and durable self-healing asphalt based on the designability of the polymer chemical structure and reversible recombination of covalent bonds. Moreover, the effect of long-term thermal oxidative aging and ultraviolet (UV) aging on self-healing promotion by polymers (PUS) containing dynamic disulfide bonds was investigated through a nonthixotropic evaluation system.

Preparation and Characterization of Red, Green, Blue (RGB) and White Luminescent Inorganic/Organic Polymers Through In Situ Polymerization.

YVO:Eu/PMMA, LaPO:Ce,Tb/PMMA and CaWO/PMMA nanocomposites were prepared by in situ polymerization method with hydrophobic YVO:Eu, LaPO:Ce,Tb and CaWO nanoparticles as the filler and poly (methyl methacrylate) (PMMA) as the host material. All the nanoparticles and composites have been well characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), the thermogravimetric analysis (TGA), photoluminescence excitation, and emission spectra and luminescence decays. YVO:Eu/PMMA, LaPO:Ce,Tb/PMMA, CaWO/PMMA nanocomposites exhibit strong red, green and blue photoluminescence upon 254 nm UV excitation, respectively.

An ionic-liquid functionalized metal-organic framework and its high performance as a solid electrolyte for lithium-ion conduction.

Crystalline porous metal-organic frameworks (MOFs) have attracted great interest, including in the field of solid-state electrolytes. Herein, we report a new type of solid-state electrolyte based on an MOF matrix and a Li ionic liquid. By covalently bonding the Li ionic liquid (MIMS·LiTFSI) on the stable UiO-67 framework, the obtained crystalline IL-MOF material exhibited high ion conductivities within a wide temperature range (30 °C 1.

Comprehensive effects of biochar-assisted nitrogen and phosphorus bioremediation on hydrocarbon removal and microecological improvement in petroleum-contaminated soil.

Biochar is widely used in agricultural soils, but its effects with nitrogen and phosphorus amendments on petroleum-contaminated soil are unclear. This study investigated biochar-assisted biostimulation in a microcosm experiment, focusing on hydrocarbon degradation, nitrogen cycling, and soil properties. Compared to the biostimulation alone (BS), biochar combined biostimulation (BSC) significantly enhanced the abundances of petroleum hydrocarbon degraders including Lysobacter and Brevundimonas, which led to a 17% increase in total petroleum hydrocarbon (TPH) degradation, with 9% and 39% enhancements in saturated hydrocarbon degradation and aromatic hydrocarbon fraction degradation, respectively.

Simultaneous removal of ammonia, copper ions and sulfamethoxazole from aquaculture wastewater with low carbon to nitrogen ratio enhanced by manganese redox driven by a two-stage synergistic bioreactor: Optimization and potential mechanism.

The problem of low carbon-nitrogen ratio (C/N) in wastewater is a major challenge for biological treatment, especially the complex pollution of ammonia nitrogen (NH-N), sulfamethoxazole (SMX), and copper ions (Cu(II)). Herein, a strain of Pseudoxanthomonas sp. MA23 with manganese (Mn) reduction-coupled ammonia oxidation properties was isolated.

Bimetallic organic framework derived Co-MoN/MoC catalyst for HER/OER bifunctional electrocatalytic reaction.

Metal organic frameworks (MOFs) are widely used as precursors due to their tunable morphology and high specific surface area. Molybdenum nitride (MoN) and molybdenum carbide (MoC) are promising catalyst materials with electronic structures similar to the noble metal platinum. However, the preparation and modification of the composite systems comprising MoN and MoC are complex, often leading to significant agglomeration and limiting their application in various catalytic fields.

Refractory Metal-Based MXenes: Cutting-Edge Preparation and Applications.

Refractory metal-based MXenes refer to MXenes with M as a refractory metal. Due to their high conductivity, large specific surface area, multiple active sites, high photothermal conversion efficiency, adjustable surface groups, and controllable nanolayer spacing, they hold broad application prospects in various fields such as photoelectrocatalysis, biomedicine, water treatment, electromagnetic shielding, and sensors. The unique physical properties of refractory metal-based MXenes are related to their electronic and crystal structures.

Response of dissolved organic matter and disinfection by-product precursors to algal blooms and thermal stratification in deep reservoirs.

Algal bloom contribute substantially to dissolved organic matter (DOM) and disinfection by-product (DBP) precursors in deep reservoirs, threatening drinking water safety. However, the variations in DOM and DBP precursors in deep-water reservoirs during algal bloom remain unclear. UV and fluorescence spectroscopy and chlorination experiments were used to analyze the variations in DOM and DBP precursors during algal bloom in the Sanhekou Reservoir.

Considerable declines in odor in a drinking water reservoir: Variations of odorous community, precursor enzymes abundance, distribution, and environmental dominant factors.

The presence of 2-methylisoborneol (2-MIB) is acknowledged as a prevalent source of odor-related challenges in drinking water reservoirs. Among the three in situ experiments conducted in drinking water reservoir, the water-lifting aerator with bio-filling system exhibited the most pronounced overall effects. It achieved a remarkable 98.

Polysaccharide-based biopolymeric magnetic hydrogels for remediation of antibiotics from aqueous solution.

Polysaccharide-based biopolymeric magnetic hydrogels have garnered significant attention as effective materials for wastewater treatment due to their high adsorption capacity and environmentally friendly nature. This review examines recent advancements in the development of biopolymeric magnetic hydrogels derived from polysaccharides such as cellulose, chitosan, alginate, carrageenan, starch, and gums, with a focus on their application in removing antibiotics from contaminated water as it not only enhances adsorption performance but also simplifies separation processes after treatment, making them highly efficient for practical applications. The review aims to provide a comprehensive overview of the synthesis techniques, performance characteristics, and interaction mechanisms of these hydrogels, highlighting their renewability and suitability for large-scale water treatment.

Strong Red Luminescence in Europium Complexes Solution for Anti-Counterfeiting Applications.

Eu-activated phosphors with distinct photoluminescence properties are well-suited for diverse applications, including lighting, sensing, and imaging. Despite their potential, the large-scale and energy-efficient production of Eu-doped phosphors remains a significant challenge for industrial applications. This research delves into the luminescent performance of Eu ions in nitrate solutions at room temperature by employing detailed spectroscopic characterization.

A composite of pineapple leaf-derived porous carbon integrated with ZnCo-MOF for high-performance supercapacitors.

Electrochemical energy storage heavily depends on the activity and stability of electrode materials. However, the direct use of metal-organic frameworks (MOFs) as supercapacitor electrode materials poses challenges due to their low electrical conductivity. In this study, pineapple leaf-derived biochar (PLB) was employed as a carrier for bimetallic ZnCo-MOF, resulting in the composite ZnCo-MOF@PLB-800, synthesized through growth and pyrolysis at 800 °C.

Nano-FeO/FeCO modified red soil-based biofilter for simultaneous removal of nitrate, phosphate and heavy metals: Optimization, microbial community and possible mechanism.

The pollution of nitrogen, phosphorus and heavy metals in surface water is becoming more and more serious, affecting the safety of water quality. In this study, three biofilters were constructed using iron-modified red soil-based filler carriers (RSC, nano-FeO@RSC, and FeCO@RSC) combined with strain Zoogloea sp. ZP7 to simultaneously remove nitrate (NO-N), phosphate (PO-P), copper (Cu), and zinc (Zn).

Distribution Patterns of Urban Spontaneous Vegetation Diversity and Their Response to Habitat Heterogeneity: A Case Study of Five Cities in Heilongjiang Province, China.

Spontaneous vegetation is an important component of urban biodiversity and an excellent agent for exploring the mutual feedback mechanism between urbanization and urban ecosystems. Rapid urbanization has had a significant impact on the composition, structure, and distribution patterns of urban spontaneous vegetation diversity. Studying the diversity distribution patterns and causes of urban plant communities is beneficial for understanding the formation and maintenance mechanisms of plant diversity in specific urban habitats.

Dual application of lotus stem in fabricating a bioreactor for the remediation of nitrate, plumbum, and carbamazepine in industrial wastewater.

Addressing the treatment of complex industrial wastewater continues to be a substantial challenge within the realm of water treatment. A biofilm reactor was engineered, integrating lotus stem biochar, lotus stem biological filler, and the ZW5 strain for enhanced wastewater treatment. The removal efficiencies of nitrate (NO-N), calcium (Ca), chemical oxygen demand (COD), phosphorus (PO-P), plumbum (Pb), and carbamazepine (CBZ) were 98.

Efficient oxidative remediation of polycyclic aromatic hydrocarbons (PAHs)-contaminated soil: A thorough comprehension of Fe-loaded biochar activated persulfate.

The porous and defective structure of biochar (BC) can accelerate surface electron transfer, promote the generation of more reactive oxygen species (ROS) by persulfate (PS), and effectively degrade organic pollutants in the soil. Electron transfer is a crucial link in this process, directly determining its oxidative degradation efficiency. In this study, using a novel strategy of enhancing electron transfer on the surface of BC by loading iron, three Fe-loaded BC activators (Fe-FeO@BC, FeO@BC and FeO@BC) were synthesized to support the oxidative remediation of benzo(a)pyrene (BaP, Model compound of PAHs)-contaminated soil by PS.