Salinity stress and recovery of the algal-bacterial granular sludge (ABGS) system under the influence of different N-acyl-homoserine lactones (AHLs).

The algal-bacterial granular sludge (ABGS) system was established to explore the effect of 1% salinity conditions, determine the recovery process following salinity disturbance, and probe the impacts of two N-acyl-homoserine lactones (AHLs) on the system. Exposure to 1% salinity led to the reduction of filaments and an increase in TB-EPS contents within the ABGS system. The phosphorus removal performance of the ABGS system severely decreased at 1% salinity did not restore fully during the subsequent recovery stage, demonstrating that salinity stress induced long-term inhibition.

Experimental Study and Hydration Mechanism Analysis of Geopolymer Multielement Net Slurry Self-Leveling Slurry Material.

In this project, cement-based composites reinforced with slag powder (abbreviated as SP), steel slag powder (abbreviated as SSP), and desulfurization gypsum (abbreviated as FGD) were used as the research objects, and the preparation, mechanical properties, and strengthening mechanism of the composites were systematically studied. A laser particle analyzer (Malvern Instruments Analysis) was used to determine that the particle sizes of the raw SSP, SP, and FGD materials were concentrated between 5 and 40 μm, indicating that they were fine-grained minerals. SSP and SP are highly active alkaline substances.

Suspended sediment (SPS) triggers nitrogen retention by altering microbial network stability and electron transport behavior during the aerobic-anoxic transition.

NO-N transformation, the vital biological process, determines nitrogen removal and retention in aquatic environment. Suspended sediment (SPS) ubiquitous in freshwater ecosystems can accelerate the transitions from aerobic to anoxic states, inevitably impacting NO-N transformation. To elaborate on the microbial mechanism by which SPS content affected NO-N transformation, we explored nitrogen removal and retention, microbial communities, co-occurrence networks, and electron transfer behavior under different SPS content during the aerobic-anoxic transition.

Effect of bismuth on the microstructural evolution and properties of single-crystal Fe during rolling: a molecular dynamics study.

Context: Bi-containing free-cutting steel has consistently attracted attention in the field of materials processing. The molecular dynamics (MD) simulations were used to investigate the impact of bismuth (Bi) nanoparticles on the internal structural evolution and mechanical properties of single-crystal Fe during the rolling process. The influence of varying rolling depths in the presence of nanoparticles is also examined.

Analytical solution of a microrobot-blood vessel interaction model.

This study develops a dynamics model of a microrobot vibrating in a blood vessel aiming to detect potential cancer metastasis. We derive an analytical solution for microrobot's motion, considering interactions with the vessel walls modelled by a linear spring-dashpot and a constant damping value for blood viscosity. The model facilitates instantaneous state transitions of the microrobot, such as contact with the vessel wall and free motion within the fluid.

Directed coordination of C/N-termini of cyano group in metal hexacyanoferrates to efficient palladium recovery: Enhanced adsorption affinity and selectivity.

N-termini Cyano group (CN) in metal hexacyanoferrates (MHCF) have been identified as specific-affinity sites for palladium (Pd), but C-termini CN do not effectively serve as Pd adsorption sites due to their stronger bonds with the metal ligands (M), which reduces the activity and density of CN. Herein, the optimization of directional coordination of cyano group C/N-termini by modulating the electronic structure of the M (Fe, Co, and Ni) in MHCF was investigated to reinforce the Pd recovery. Spectroscopic analyses and DFT calculations revealed that NiHCF exhibited N-site mono-coordination, whereas CoHCF displayed C-site mono-coordination due to spin-exchange interactions, leading to the strengthened N-Co bonds and weakened Fe-C bonds.

The addition of vermiculite reduced antibiotic resistance genes during composting: Novel insights based on reducing host bacteria abundance and inhibiting plasmid-mediated conjugative transfer.

Antibiotic resistance genes (ARGs) are prevalent in raw materials used for composting. The utilization of eco-friendly materials for the removal of ARGs is regarded as an economically effective method. Therefore, this study focused on the impact of incorporating different proportions of vermiculite (0% (CK), 5% (T1), and 10% (T2)) on the dynamics of ARGs during composting.

Transcriptional and molecular simulation analysis of the response mechanism of anammox bacteria to 3,4-dimethylpyrazole phosphate stress.

Anaerobic ammonium oxidation (anammox) and nitrification are two vital biological pathways for ammonium oxidation, pivotal in microbial nitrogen cycling. 3,4-Dimethylpyrazole phosphate (DMPP) is commonly used as inhibitors in agricultural soils to reduce nitrogen losses from farmland, while whether it affect anammox is an open question. Acute inhibition tests revealed that 53.

Deciphering the antibiotic resistome in stratified source water reservoirs in China: Distribution, risk, and ecological drive.

The proliferation and dissemination of antibiotic resistance genes (ARGs) in source water reservoirs may pose a threat to human health. This study investigated the antibiotic resistance in stratified reservoirs in China across different seasons and spatial locations. In total, 120 ARG subtypes belonging to 15 ARG types were detected with an abundance ranging from 171.

Establishing electro-functionalized gravity-driven ceramic membrane filtration (EGDCM) for decentralized treatment of algae-laden brackish water: Comparison of in-situ electro-oxidation and ex-situ electro-coagulation.

Algae-laden brackish water (ABW) has remarkably threatened drinking water safety in warm coastal areas. Although gravity-driven ceramic membrane filtration (GDCM) exhibits high potential in ABW treatment during decentralized water supply, membrane fouling is still a critical problem. Herein, GDCM was skillfully electro-functionalized (EGDCM) by in-situ electro-oxidation (ISEO) based on self-fabricated Ti/SnO-Sb dimensionally stable anode (DSA) (EO-EGDCM) and ex-situ electro-coagulation (ESEC) based on iron anode (EC-EGDCM) in this study.

Ethnic disparities of poor households by a multilevel analysis of household and contextual effects: Evidence from a multi-ethnic county of China.

Poverty in multi-ethnic regions has always been a concern due to its complex factors and persistent nature. Using a sample of 8,482 ethnic majority-headed households and 2,011 ethnic minority-headed households distributed in 200 villages of Wangqing County, China, this study uses hierarchical linear models to examine the factors of income at the household level, the ethnic disparities of the household-level effect, and the contextual effect on household-level outcomes. The findings suggest that, in comparison to the majority group, there exists a smaller income gap between male-headed and female-headed poor households within the minority group.

"Bridge" interface design modulates high-performance cellulose-based integrated flexible supercapacitors.

Flexible supercapacitors offer significant potential for powering next-generation flexible electronics. However, the mechanical and electrochemical stability of flexible supercapacitors under different flexibility conditions is limited by the weak bonding between neighboring layers, posing a major obstacle to their practical application. In this paper, natural coniferous pulp cellulose was successfully modified with ethylenediamine and NiSe/Cell-NH/MoS cellulose flexible electrodes (NCMF) were fabricated by phase transfer and hydrothermal methods.

AlO-Induced Phase Conversion Regulation of WS Anode Enhances the Lithium Storage Reversibility.

WS is an attractive anode in alkali metal ion batteries (AMIBs) due to its 2D-layered structure and high theoretical capacity. However, the shuttle effect of sulfur and the spontaneous growth of W nanoparticles are key issues that limit the alkali-ion accommodation ability. Now, it is still a great challenge to achieve in situ control of the microstructure evolution paths in enclosed batteries for extending the cycling reversibility/lifespan.

Synergistic Phase and Structural Engineering for Enhanced Zinc Storage in VO@N-Doped Carbon Nanofibers.

Vanadium-based oxide cathodes are promising energy-storage systems for aqueous zinc-ion batteries (AZIBs) because of their high energy density and safety, and low cost. However, their limited ion/electron transfer rates and rapid capacity decay pose challenges to their practical application. To overcome these limitations, VO nanoparticles are developed with surface oxygen vacancies integrated with N-doped carbon nanofibers (VO@NCNFs), using an electrospinning method combined with an in situ oxidation/reduction strategy.

Promoting effect of oxygen vacancies in CuZnO-2/peroxymonosulfate system on the p-arsanilic acid degradation and secondary arsenic species immobilization.

Combining chemical oxidation and adsorption is highly desirable but challenging to remove organoarsenic compounds for water purification. Herein, we prepared a Zn-doped CuO (CuZnO-2) catalyst by incorporating Zn atoms into the CuO lattice, which results in abundant surface oxygen vacancies (OVs) and modulates the electronic structure of Cu-OVs-Zn sites for PMS activation to degrade p-arsanilic acid (p-ASA) and adsorb the secondary arsenic species simultaneously. The elevated d-band centers for Cu upward to the Fermi level can significantly strengthen the adsorption of PMS, p-ASA, and the generated arsenic species.

Upflow blanket filter anammox (UBFA) system treating low-nitrogen wastewater: high-efficient nitrogen removal, granules formation, NO emission, and microbial succession.

This research provides an important approach for low-nitrogen wastewater treatment through anaerobic ammonium oxidation (Anammox), and Anammox granule sludge (AnGS) in the Upflow. Blanket Filter Anammox (UBFA) system through shortening the hydraulic retention time was successfully cultivated. The percentage of medium granules (1.

The effect of ionic regulation on the structure of whey protein during ultrafiltration process and hydraulic reverse cleaning efficiency.

The effects of ionic regulation on the structure of membrane surface proteins and backwashing efficiency during ultrafiltration were investigated to reveal the mechanism of ionic mitigating membrane fouling. The repulsion between proteins and membrane was enhanced after ion regulation. With the extension of ultrafiltration time, the α-helix and random coil of membrane surface proteins were decreased, while the β-turn structure increased which was subjected to continuous regulation by Na, Zn and K at 4 min, 8 min and 12 min, respectively.

Transcriptomics and metabonomics reveal molecular mechanisms promoting lipid production in Haematococcus pluvialis co-mutated by atmospheric and room temperature plasma with ethanol.

Atmospheric and room temperature plasma mutation and co-mutation with ethanol were employed to generate Haematococcus pluvialis mutants AV3 and AV8. These mutants were screened using multiple indices of chlorophyll fluorescence, quantum yield, lethality, growth rate, dry cell weight, and lipid content. Compared to the wild strain, the mutants demonstrated genetic stability (*p > 0.

Chloride Engineering for Boosting Perovskite Photovoltaics: Impact on Precursor Coordination, Crystallization, and Film Quality.

Perovskite solar cells (PSCs) have seen rapid advancements over the past decade, driven by their exceptional optoelectronic properties and high power conversion efficiencies. Cl-based additives strategy has significantly contributed to these advancements by enhancing crystallinity, improving preferred orientation, and optimizing the surface morphology of perovskite films. This review provides a comprehensive summary of recent advancements and insights into the critical role of Cl-based additives in perovskite photovoltaics, focusing on the mechanisms behind Cl incorporation and its effects on film and device performance.

[Effects of Storm Runoff on Bacterial Community Structure and Metabolic Activity and Water Quality in a Drinking Water Reservoir].

To explore the influence of storm runoff on bacterial metabolic activity and water quality in Jinpen Reservoir, three-dimensional fluorescence spectroscopy parallel factor analysis, high-throughput DNA sequencing technology, and Biolog technology were used to analyze variations in the components of dissolved organic matter, bacterial community composition, and microbial metabolic activity during three periods （before, during, and one month after runoff）. The results showed that after storm runoff into the reservoir, the water temperature decreased, and dissolved oxygen in the middle of the water column increased significantly. Finally, the aerobic and low-temperature state in the middle water and anaerobic and low-temperature state in the bottom water was formed.

Mo-O-Sn Bond Boosting Kinetics of MoO-xSnO/Sn Anode for High-Performance Li-ion Batteries.

Obtaining a robust electrode composed of Sn-based metal oxides and carbonaceous matrix through nanoscale structure engineering is essential for effectively improving Li-ion batteries' electrochemical performance and stability. Herein, we report a bimetallic MoO-xSnO/Sn nanoparticles uniformly anchored on N, S co-doped graphene nanosheets (MoO-xSnO/Sn@NSG) as an anode electrode for Li-ion battery via a one-step hydrothermal and thermal treatment approach. In the MoO-xSnO/Sn nanocomposite, the generated Sn-O-Mo bond can modulate the electronic and composition structures to improve the intrinsic conductivity of SnO and reinforce the structural stability during cycles.

Algal organic matter triggers re-assembly of bacterial community in plumbing system.

Algal bloom outbreaks in upstream drinking water reservoirs inevitably lead to algal organic matter (AOM) pollution in downstream drinking water plants and distribution systems. However, the responses of indoor piped drinking water quality and microbial community to AOM remain to be well studied. In this study, we investigated the effects of low and high concentrations of Chlorella organic matters on pipe-based drinking water.

Impact of recharge water source quality on Chlorella vulgaris growth and biomass: Strategies for eutrophication control in urban landscape lakes.

Understanding the relationship between recharge water quality and algal metabolism is critical for managing eutrophication in urban landscape water bodies. This study investigates six landscape water bodies in Xi'an City, utilizing natural and reclaimed water recharge sources to cultivate and evaluate the growth and biomass composition of Chlorella vulgaris. The findings revealed that the growth and metabolic rate of C.