Modulating Lewis acidity by oxygen vacancies engineering in Ce-doped manganese dioxides to promote permanganate activation.

The development of efficient and eco-friendly solid catalysts with strong Lewis acid sites for permanganate (KMnO) activation is highly desired for pollutant removal. In this study, the oxygen vacancy (O) content of cryptomelane-type manganese oxide, was modulated by Ce doping to promote its Lewis acidity. The findings show that incorporating Ce into the framework of MnO octahedra inhibits the growth of the catalyst to form a completely amorphous structure, with the increase of O ratio, especially bulk O content.

Overexpression of pectate lyase gene FvPLB leads to pollen abortion in Fragaria vesca.

The pectate lyase gene FvPLB has been implicated in the regulation of fruit softening in previous studies. We have now also found that abortions occurred in FvPLB overexpression lines. After overexpression of FvPLB, the cellulose content in the pollen grain and pollen tube wall was not affected, but the esterified and de-esterified pectin content in the pollen grain and pollen tube wall was significantly reduced, resulting in looser cell walls and deeper pollen grain deformation.

High temperature and ozone co-exposure induces cardiovascular damage in mice: Insights from gut microbiome and plasma metabolomics.

Epidemiological studies have demonstrated associations between heat waves, ozone (O) pollution, and cardiovascular morbidity and mortality. High temperature (HT) and higher levels of O usually co-exist in the atmosphere. However, few studies have investigated the adverse effects of HT and O co-exposure on cardiovascular system.

Airway microbiota dysbiosis and metabolic disorder in ozone and PM co-exposure induced lung inflammatory injury in mice.

Co-exposure to ground-level ozone (O) and fine particles (PM, ≤ 2.5 µm in diameter) has become a primary scenario for air pollution exposure of urbanites in China. Recent studies have suggested a synergistic effect of PM and O on induction of lung inflammatory injury.

Peroxymonosulfate promoted dioxygen activation with Mn(II)-nitrilotriacetic acid complexes for sulfadiazine degradation.

In the field of peroxymonosulfate (PMS) activation technology, there is a pressing need to reduce PMS consumption and enhance its utilization rate. The present study demonstrates that the introduction of dissolved oxygen (DO) into the Mn(II)-nitrilotriacetic acid (NTA)-activated PMS system significantly enhances the degradation efficiency of sulfadiazine and increases the PMS utilization rate from approximately 15.0 to 41.

Activation of HO-HCO by CaCoO for pollutant degradation.

The bicarbonate-activated hydrogen peroxide (BAP) system is widely studied for organic pollutant degradation in wastewater treatment. CaCoO, a heterogeneous catalyst containing multivalent cobalt including Co(II) and Co(III), was herein investigated as a BAP activator, and Acid Orange 7 (AO7) was used as a model pollutant. CaCoO exhibited good activation performance.

Short-term exposure to air pollution on peripheral white blood cells and inflammation biomarkers: a cross-sectional study on rural residents.

Effects of short-term exposure to ambient air pollution on systemic immunological and inflammatory biomarkers in rural population have not been adequately characterized. From May to July 2021, 5816 participants in rural villages of northern Henan Province, China, participated in this cross-sectional study. Blood biomarkers of systemic inflammation were determined including peripheral white blood cells (WBC), eosinophils (EOS), basophils (BAS), monocytes (MON), lymphocytes (LYM), neutrophils (NEU), neutrophil-lymphocyte ratio (NLR), and serum high-sensitivity C-reactive protein (hs-CRP).

AN698/40746067 suppresses bone marrow adiposity to ameliorate hyperlipidemia-induced osteoporosis through targeted inhibition of ENTR1.

Hyperlipidemia-induced osteoporosis is marked by increased bone marrow adiposity, and treatment with statins for hyperlipidemia often leads to new-onset osteoporosis. Endosome-associated trafficking regulator 1 (ENTR1) has been found to interact with different proteins in pathophysiology, but its exact role in adipogenesis is not yet understood. This research aimed to explore the role of ENTR1 in adipogenesis and to discover a new small molecule that targets ENTR1 for evaluating its effectiveness in treating hyperlipidemia-induced osteoporosis.

Hydrogen Spillover Induced PtCo/CoO Interfaces with Enhanced Catalytic Activity for CO Oxidation at Low Temperatures in Humid Conditions.

The development of catalysts with abundant active interfaces for superior low-temperature catalytic CO oxidation is critical to meet increasingly rigorous emission requirements, yet still challenging. Herein, this work reports a PtCo/CoO/AlO catalyst with PtCo clusters and enriched Pt─O─Co interfaces induced by hydrogen spillover from the Pt sites and self-oxidation process in air, exhibiting excellent performance for CO oxidation at low temperatures and humid conditions. The combination of structural characterizations and in situ Fourier transform infrared spectroscopy reveals that the PtCo cluster effectively prevents CO saturation/poisoning on the Pt surface.

Morphology-dependent activation of hydrogen peroxide with CuO for tetracycline hydrochloride degradation in bicarbonate aqueous solution.

The design of efficient heterogeneous catalysts in bicarbonate-activated hydrogen peroxide systems (BAP) is a hot topic in wastewater treatment. In this work, CuO nanoparticles with different morphologies including cubic shape (c-CuO), octahedron shape (o-CuO) and spherical shape (s-CuO), were applied in BAP for the first time to degrade tetracycline hydrochloride (TC). Compared with Cu ions and CuO, TC degradation was boosted in the presence of CuO in the BAP system, with the degradation rate following the order c-CuO > o-CuO > s-CuO.

Identification and functional study of detoxification-related genes in response to tolfenpyrad stress in Glyphodes pyloalis Walker (Lepidoptera: Pyralidae).

Glyphodes pyloalis Walker (G. pyloalis) is a common destructive mulberry pest. Due to the long-term and frequent use of insecticides, it has developed tolerance to commonly used insecticides.

Periodontal ligament-associated protein-1 promotes osteoclastogenesis in mice by modulating TGF-β1/Smad1 pathway.

Background: Periodontal ligament-associated protein-1 (PLAP-1), an important target molecule of osteoarthritis research, may affect alveolar bone resorption. The aim of our study was to comprehensively and systematically detect the effect of PLAP-1 on alveolar bone resorption and the underlying mechanism in PLAP-1 knockout mouse models.

Methods: We used a PLAP-1 knockout (C57BL/6N-Plap-1 ) mouse model to investigate the effect of PLAP-1 on osteoclast differentiation and the underlying mechanism by adding Porphyromonas gingivalis lipopolysaccharide to stimulate bone marrow-derived macrophages.

Permanganate activation with Mn oxides at different oxidation states: Insight into the surface-promoted electron transfer mechanism.

The development of new strategies to improve the removal of organic pollutants with permanganate (KMnO) is a hot topic in water treatment. While Mn oxides have been extensively used in Advanced Oxidation Processes through an electron transfer mechanism, the field of KMnO activation remains relatively unexplored. Interestingly, this study has discovered that Mn oxides with high oxidation states including γ-MnOOH, α-MnO and α-MnO, exhibited excellent performance to degrade phenols and antibiotics in the presence of KMnO.

Constructing Highly Active Metal Oxides for Toluene Degradation by Fenton Iron Mud Modulation.

Fenton iron mud (IM) is a hazardous solid waste produced by Fenton oxidation technology after treating industrial wastewater. Thus, it is necessary and challenging to develop a recycling technology to back-convert dangerous materials into useful products. Herein, we develop a sustainable approach to prepare highly active metal oxides via a solid-state grinding method.

Modified birnessite MnO as efficient Fenton-like catalysts through electron transfer process between the simultaneously surface-activated peroxymonosulfate and pollutants.

The development of efficient and eco-friendly Mn-based hybrids for the degradation of biorefractory organic pollutants via peroxymonosulfate (PMS) activation is highly desired. In this study, a novel graphite nanosheet (GNs)-based Fe-Mn bimetallic oxide (Fe doped birnessite MnO, FeMn/GNs) was synthesized under mild conditions. Compared with monometallic Fe or Mn oxide on GNs, FeMn/GNs exhibited a higher surface area, decreased Mn oxidation states, stronger interaction with GNs, and more active sites for PMS adsorption.

Quenching-induced surface modulation of perovskite oxides to boost catalytic oxidation activity.

Quenching is a powerful method for modulating surface structures of metal oxide nanocatalysts to achieve high catalytic oxidation activities, but it is still challenging. Herein, a catalyst of ultrafine CoO nanoparticles decorated on Co-doped LaMnO (CoO/LaCoMnO) is synthesized via one-step quenching perovskite-type LaMnO nanocatalyst into an aqueous solution of cobalt nitrate, which exhibits significantly improved catalytic performance with toluene (1000 ppm) conversion of 90% at 269 °C under the gas hourly space velocity of 72000 mL g h. The high catalytic activity correlates with large surface area, abundant oxygen vacancies and good reducibility.

FvWRKY48 binds to the pectate lyase FvPLA promoter to control fruit softening in Fragaria vesca.

The regulatory mechanisms that link WRKY gene expression to fruit ripening are largely unknown. Using transgenic approaches, we showed that a WRKY gene from wild strawberry (Fragaria vesca), FvWRKY48, may be involved in fruit softening and ripening. We showed that FvWRKY48 is localized to the nucleus and that degradation of the pectin cell wall polymer homogalacturonan, which is present in the middle lamella and tricellular junction zones of the fruit, was greater in FvWRKY48-OE (overexpressing) fruits than in empty vector (EV)-transformed fruits and less substantial in FvWRKY48-RNAi (RNA interference) fruits.

A Hydrothermally Stable Single-Atom Catalyst of Pt Supported on High-Entropy Oxide/AlO: Structural Optimization and Enhanced Catalytic Activity.

A catalyst with high-entropy oxide (HEO)-stabilized single-atom Pt can afford low-temperature activity for catalytic oxidation and remarkable durability even under harsh conditions. However, HEO is easy to harden during sintering, which results in a few defective sites for anchoring single-atom metals. Herein, we present a sol-gel-assisted mechanical milling strategy to achieve a single-atom catalyst of Pt-HEO/AlO.

Effect of Absorbed Sulfate Poisoning on the Performance of Catalytic Oxidation of VOCs over MnO.

Manganese oxides have displayed vast potential for future development in the field of catalytic abatement of volatile organic compounds (VOCs) because of their low cost, high stability, and enhanced catalytic activity. Manganese sulfate and manganese chloride are widely used as reaction sources to prepare manganese oxides. As reported, absorbed chloride usually affects the performance of catalysts.

Changes in the cell wall during fruit development and ripening in Fragaria vesca.

Although fruit expansion during ripening has been extensively studied, the structural and metabolic mechanisms remain largely unknown. Here, we report the critical roles of cell separation and cell wall metabolism in the coordinated regulation of fruit expansion in Fragaria vesca. Anatomical observations indicated that a syndrome of cell separation occurred from the very earliest stage of fruit set.

[Study on the 3,4-Dihydroxyphenylalanine Redox State Characterization Method of Mussel Adhesive Protein].

Objective: To investigate the feasibility of using liquid chromatography (HPLC) to characterize the 3, 4-Dihydroxyphenylalanine (DOPA) redox state of mussel adhesive protein (MAP).

Methods: The DOPA and protein contents of MAP were determined by HPLC, Arnow and Bradford methods respectively.

Results: With extended oxidation time, the protein contents of MAP samples remained unchanged whereas the DOPA contents declined.

Comparison Study on the Adsorption Capacity of Rhodamine B, Congo Red, and Orange II on Fe-MOFs.

Using a microwave-assisted ball-milling approach, Fe-based metal-organic frameworks (Fe-MOFs) were prepared from FeSO₄·7H₂O and trimesic acid. Scanning electron microscopy, Fourier-transform infrared spectrometry, X-ray, and thermogravimetric analysis were utilized to characterize the thermal stability and structure of the prepared Fe-MOFs. These Fe-MOFs were used to remove organic dyes from aqueous solutions.

Preparation of Fe-MOFs by microwave-assisted ball milling for reducing Cr(vi) in wastewater.

Fe-Based metal-organic frameworks (Fe-MOFs) were prepared with trimesic acid and FeSO·7HO via a microwave-assisted ball milling approach. The structure and thermal stability of the as-prepared Fe-MOFs were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectrometry (FTIR), X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TGA). When used to degrade 20 mg L hexavalent chromium in aqueous solution, the Fe-MOFs were found to completely reduce a 100 mL solution within 120 min under natural light and a 400 mL solution within 90 min under Xe lamp irradiation.

Label-Free Homogeneous Electrochemical Sensing Platform for Protein Kinase Assay Based on Carboxypeptidase Y-Assisted Peptide Cleavage and Vertically Ordered Mesoporous Silica Films.

Presented herein is a simple, robust, and label-free homogeneous electrochemical sensing platform constructed for the detection of protein kinase activity and inhibition by integration of carboxypeptidase Y (CPY)-assisted peptide cleavage reaction and vertically ordered mesoporous silica films (MSFs). In this sensing platform, the substrate peptide composed of kinase-specific recognized sequence and multiple positively charged arginine (R) residues was ingeniously designed. In the presence of protein kinase, the substrate peptide was phosphorylated and then immediately resisted CPY cleavage.