Publications by authors named "Weiying Xu"

Article Synopsis
  • Leaf dark respiration (R) is crucial for carbon cycling in forests but is often not quantified properly; this study examined how R relates to various leaf traits like maximum carboxylation capacity (V) across different forest types in China.
  • The research found that leaf magnesium and calcium concentrations are more relevant for explaining R variability than more common traits like leaf mass per area (LMA) and nitrogen (N) concentrations, but the relationships are generally weak and specific to each forest type.
  • Leaf spectroscopy proved to be a more effective method for predicting R compared to traditional trait relationships, revealing new traits with broader applicability and suggesting that spectroscopy could enhance models of plant respiration.
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The calcium (Ca) sensor ROD1 (RESISTANCE OF RICE TO DISEASES1) is a master regulator of immunity in rice. By screening suppressors of mutants, we show that ROD1 governs immune homeostasis by surveilling the activation of a canonical immune pathway. Mutations in (), (), (), and () all abolish enhanced disease resistance of plants.

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Plant intracellular nucleotide-binding leucine-rich repeat (NLR) receptors with an N-terminal Toll/interleukin-1 receptor (TIR) domain sense pathogen effectors to initiate immune signaling. TIR domains across different kingdoms have NADase activities and can produce phosphoribosyl adenosine monophosphate/diphosphate (pRib-AMP/ADP) or cyclic ADPR (cADPR) isomers. The lipase-like proteins EDS1 and PAD4 transduce immune signals from sensor TIR-NLRs to a helper NLR called ADR1, which executes immune function.

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Article Synopsis
  • Circoviruses, identified since 1974, cause diseases in humans and various animals, but their origins and transmission pathways are not well understood.
  • This study utilized genome sequences from GenBank and advanced algorithms to analyze the evolution and origins of circovirus, revealing their evolutionary roots trace back to fish.
  • Findings indicate humans, along with mosquitos and other animals, play a role in the virus's spread, and extensive genetic variation occurs through recombination events, helping inform prevention strategies against infections.
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Inorganic coagulants could effectively precipitate algae cells but might increase the potential risks of cell damage and coagulant residue. This study was conducted to critically investigate the suitability of polyaluminum (PAC), FeCl and TiCl for algae-laden water treatment in terms of the trade-off between algal substance removal, cell viability, and coagulant residue. The results showed that an appropriate increase in coagulant dosage contributed to better coagulation performance but severe cell damage and a higher risk of intracellular organic matter (IOM) release.

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Estimating the pollution loads in the Tuhai River is essential for developing a water quality standard scheme. This study utilized the improved output coefficient method to estimate the total pollution loads in the river basin while analyzing the influencing factors based on the STIRPAT (Stochastic Impacts by Regression on Population, Affluence, and Technology) model. Findings indicated that the projected point source pollution loads for total phosphorus (TP), chemical oxygen demand (COD), and ammonia nitrogen (AN) would amount to 3937.

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Abundance of dominant-flocculated-species is the key to determine coagulation performance of coagulant. Titanium-based coagulants have garnered considerable attention due to their high coagulation efficiency, but with a current challenge of the identification and isolation of the dominant-flocculated-species. Herein, polytitanium chloride (PTC), enriched with dominant-flocculated-species, was successfully synthesized by electrodialysis through accurate micro-interface control of the reaction among Ti-hydrolyzed-species and OH.

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Desiccation stress could induce crossprotection and even affect virulence of . However, the influence of food matrices with low-water activity on desiccation adaptation of still remains unclear. This study investigated the survival and adaptation of Enteritidis in skim milk powder, ginger powder, and chocolate powder under desiccation storage conditions for a total of 12 weeks.

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Cryoglobulinaemia can manifest as fatigue, purpura, and joint pain, and can involve the kidneys and peripheral nervous system. Type II and mixed cryoglobulinemia cases are usually associated with hepatitis C virus infection and autoimmune diseases, and most cases reported outside China have been related to hepatitis C virus. The pathological manifestation of cryoglobulinaemia glomerulonephritis is always membranous proliferative glomerulonephritis or membranous nephropathy; other pathological types are rare.

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The membrane fouling caused by extracellular organic matter (EOM) and algal cells and organic matter removal of two typical cyanobacteria (M. aeruginosa and Pseudoanabaena sp.) during ultrafiltration (UF) process were studied in this work.

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The effect of powdered activated carbon (PAC) on chlorine oxidation is not well understood, therefore this study was designed to further investigate the chlorine oxidation mechanism with the presence of PAC. The oxidation processes of two model organic pollutants (bisphenol-A and methylene blue) with chlorine were compared in the absence and presence of PAC. The results showed a significant increase in reaction rates with the addition of PAC.

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Abstract: This study was conducted to investigate the effects of the physiological state, desiccation adaptation, and storage of powdered infant formula on Salmonella cell survival and expression of desiccation stress-related genes. Powdered infant formula was inoculated with Salmonella Typhimurium in the biofilm state on beads and in the planktonic state on nitrocellulose filters and stored at 25°C for up to 270 days. Both 5-cyano-2,3-ditoyl tetrazolium chloride flow cytometry and xylose lysine deoxycholate agar plate counts revealed that biofilm-forming Salmonella cells tended to enter the viable but nonculturable (VBNC) state (P < 0.

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In this work, a mussel-inspired polydopamine (PDA) nanoparticle with biocompatible and reactive surface characteristics was desirably incorporated with high loading capacity and pH-induced disassembly-releasing behavior toward Fe(III) ions to develop an enzyme-free colorimetric immunoassay. The catechol functional network of PDA can act as a scaffold to coordinate with large amounts of Fe(III) ions to form the PDA-Fe(III) NPs whose coordination state can be tailored by changing the pH values. In detail, PDA-Fe(III) NPs can be maintained in a disassembled tri-coordinate state under alkaline conditions while the highly loaded Fe(III) ions can be easily released under acid conditions to react with ferrocyanide for the in situ generation of Prussian blue (PB) NPs.

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Removals of extracellular organic matter (EOM) derived from cyanobacterium M. aeruginosa and humic acid (HA) in single-component and bi-component systems and the interactions during the coagulation-ultrafiltration (C-UF) process were investigated in this study. In a single-component system, only 23% EOM could be removed by alum at dose as high as 6 mg/L, which induced serious membrane fouling in the following UF process.

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The system performance, sludge property and microbial community shift were evaluated in a nitrifying sludge (NS) bioreactor for simultaneous treating p-Nitrophenol (PNP) and high ammonia wastewater. After long-term acclimation for 80 days, the removal efficiencies of PNP and NH-N reached to 99.9% and 99.

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Heterogeneous electro-Fenton (EF) technology has been wildly applied for the treatment of wastewater containing dyes and other organic pollutants. However, biologically treatment should be further applied after heterogeneous electro-Fenton process in order get better effluent quality. In the present study, a simple electropolymerization method using poly (3,4-ethylenedioxythiophene) (PEDOT) and graphene oxide (GO) was applied for graphite felt (GF) electrode modification as cathode in EF system, and coupling subsequently aerobic granular sludge (AGS) biological treatment for dye wastewater treatment.

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In the present study, the feasibility of treating high ammonia wastewater was evaluated in a combination of aerobic granular sludge nitrification reactor (AGS-SBR) and poly(butylene succinate) solid denitrification reactor (PBS-SBR). After 90 days operation, the effluent NH-N and total nitrogen (TN) removal efficiencies were high of 99.6% and 99.

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Effect of turbidity on the removal of organic micropollutant (carbamazepine, CBZ) through magnetic ion exchange (MIEX) resin combined with ultrafiltration (UF) was investigated in this study. The purification behaviors of the MIEX/UF processes were studied through scanning electron microscopy, high-performance liquid chromatography, zeta potential and particle size distribution analyses. The experimental results show that 64-74% of CBZ in different turbidities could be removed by MIEX resin under the optimum dose and contact time, while water sample with turbidity of 20 ± 1.

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Adhesive bonded structure damage of hidden frame glass curtain wall will cause falling glass, which threatens the security of people and property. Therefore, the damage detection of the adhesive bonded structure of glass curtain wall has great significance. In this paper, active thermal sensing technology for bonding structure damage detection was introduced.

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This work was designed to compare the effectiveness of in-situ coagulation and MIEX as pre-treatments prior to ultrafiltration (UF) to improve organic matter (OM) removal and mitigate membrane fouling. Three kinds of OMs, i.e.

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The system performance and microbial community succession in a partial nitrification biofilm reactor in response to salinity stress was conducted. It was found that the NH-N removal efficiency decreased from 98.4% to 42.

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Simultaneous nitrification-denitrification (SND) was achieved in submerged biofilm membrane bioreactor (SBF-MBR) treating low carbon/nitrogen (C/N) ratio wastewater. A novel bio-carrier coupling of sponge and biodegradable poly(butanediol succinate) (PBS) was applied as external carbon source and biofilm carrier. Result represented that NH-N and total nitrogen removal efficiencies were high of 99.

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Microbial products, i.e. extracellular polymeric substance (EPS) and soluble microbial product (SMP), have a significant correlation with microbial activity of biologically based systems.

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Partial nitrification granular sludge was successfully cultivated in a sequencing batch reactor as a pretreatment for anaerobic ammonium oxidation (Anammox) through shortening settling time. After 250-days operation, the effluent NH-N and NO-N concentrations were average at 277.5 and 280.

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Synopsis of recent research by authors named "Weiying Xu"

  • - Weiying Xu's recent research focuses on the intersection of environmental science and microbiology, particularly examining the dynamics of pollutants, coagulants, and pathogens in various contexts, including water treatment and food safety.
  • - Significant findings include the identification of optimal inorganic coagulants for algae-laden water treatment, highlighting trade-offs in algal removal efficiency versus cell viability and residue risks, as well as the extraction of knowledge on the evolution and transmission of circoviruses affecting multiple species.
  • - Additionally, Xu's studies emphasize the behavior and survival mechanisms of pathogens like Salmonella under desiccation stress, raising important implications for food safety and the management of infectious diseases associated with contaminated products.

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