Effects of exopolysaccharides form Lactobacillus plantarum KX041 on high fat diet-induced gut microbiota and inflammatory obesity.

Lactobacillus plantarum KX041 is a probiotics obtained from early screening, which can relieve inflammation and enrich the anti-obesity intestinal flora, and produce high yield of exopolysaccharides (EPS). The extraction, structure and physicochemical properties of EPS have been completed earlier. However, whether the functional activity of L.

Switching CO-to-Acetate Electroreduction on Cu Atomic Ensembles.

The electrocatalytic reaction pathway is highly dependent on the intrinsic structure of the catalyst. CO/CO electroreduction has recently emerged as a potential approach for obtaining C products, but it is challenging to achieve high selectivity for a single C product. Herein, we develop a Cu atomic ensemble that satisfies the appropriate site distance and coordination environment required for electrocatalytic CO-to-acetate conversion, which shows outstanding overall performance with an acetate Faradaic efficiency of 70.

Phylogenomics of Paragymnopteris (Cheilanthoideae, Pteridaceae): Insights from plastome, mitochondrial, and nuclear datasets.

Previous studies have shown that at least six genera of the Cheilanthoideae, a subfamily of the fern family Pteridaceae, may not be monophyletic. In these non-monophyletic genera, the Old-World genus Paragymnopteris including approximately five species have long been controversial. In this study, with an extensive taxon sampling of Paragymnopteris, we assembled 19 complete plastomes of all recognized Paragymnopteris species, plastomes of Pellaea (3 species) and Argyrochosma (1 species), as well as transcriptomes from Paragymnopteris (6 species) and Argyrochosma (1 species).

Discovery of sp. nov. (Ophioglossaceae) from Southwest China demonstrates a unique intercontinental disjunct pattern in plants between the Himalaya and the Americas.

A new fern species, (Ophioglossaceae), from Sichuan, Xizang, and Yunnan, Southwest China (eastern Himalaya), is described and illustrated. This species is similar to in the Americas in having a cylindrical rhizome and complex-reticulate venation. In addition, both species grow in open habitat on basic soil.

Accuracy of self-reported height, weight, and waist circumference in poor, rural areas of China.

Objectives: There are differing opinions and findings about the accuracy of self-reported data. This study sought to assess the accuracy of self-reported height, weight, and waist circumference (WC) data among adult residents in poor, rural areas of China.

Methods: Multi-stage stratified cluster random sampling was used to sample rural adult residents in Jinzhai County.

Live-Cell RNA Imaging with a DNA-Functionalized Metal-Organic Framework-Based Fluorescent Probe.

Live-cell fluorescence imaging of tumor-associated miRNAs is significant for understanding the cancer onset and progression and the diagnosis and prognosis of clinical diseases. In this protocol, we describe the construction of a DNA-functionalized metal-organic framework-based fluorescent probe and demonstrate that the probe can be used to detect miRNA in vitro and live-cell imaging. The formed DNA-MOF probe can specifically target miRNA with high sensitivity and specificity.

Upgrading of nitrate to hydrazine through cascading electrocatalytic ammonia production with controllable N-N coupling.

Nitrogen oxides (NO) play important roles in the nitrogen cycle system and serve as renewable nitrogen sources for the synthesis of value-added chemicals driven by clean electricity. However, it is challenging to achieve selective conversion of NO to multi-nitrogen products (e.g.

A Universal Synthesis of Single-Atom Catalysts via Operando Bond Formation Driven by Electricity.

Single-atom catalysts (SACs), featuring highly uniform active sites, tunable coordination environments, and synergistic effects with support, have emerged as one of the most efficient catalysts for various reactions, particularly for electrochemical CO reduction (ECR). However, the scalability of SACs is restricted due to the limited choice of available support and problems that emerge when preparing SACs by thermal deposition. Here, an in situ reconstruction method for preparing SACs is developed with a variety of atomic sites, including nickel, cadmium, cobalt, and magnesium.

Urea Synthesis via Coelectrolysis of CO and Nitrate over Heterostructured Cu-Bi Catalysts.

Electrocatalytic coupling of CO and NO to urea is a promising way to mitigate greenhouse gas emissions, reduce waste from industrial processes, and store renewable energy. However, the poor selectivity and activity limit its application due to the multistep process involving diverse reactants and reactions. Herein, we report the first work to design heterostructured Cu-Bi bimetallic catalysts for urea electrosynthesis.

Lattice doping of lanthanide ions in CsZrCl nanocrystals enabling phase transition and tunable photoluminescence.

Dopants can endow lead-free perovskite nanocrystals with novel photoelectric properties. However, understanding the effect of dopants on the structure and energy transfer of lead-free perovskite nanocrystals remains limited. In this work, we synthesize zero-dimensional CsZrCl nanocrystals with a blue light quantum yield of up to 75.

In situ Generation of Cyclohexanone Drives Electrocatalytic Upgrading of Phenol to Nylon-6 Precursor.

Coupling in situ generated intermediates with other substrates/intermediates is a viable approach for diversifying product outcomes of catalytic reactions involving two or multiple reactants. Cyclohexanone oxime is a key precursor for caprolactam synthesis (the monomer of Nylon-6), yet its current production uses unsustainable carbon sources, noble metal catalysts, and harsh conditions. Herein, we report the first work to synthesize cyclohexanone oxime through electroreduction of phenol and hydroxylamine.

Fast Responsive and High-Strain Electro-Ionic Soft Actuator Based on the 3D-Structure MXene-EGaIn/MXene Bilayer Composite Electrode.

Electro-ionic soft actuators have garnered significant attention owing to their promising applications in flexible electronics, wearable devices, and soft robotics. However, achieving high actuation performance (large bending strain and fast response time) of these soft actuators under low voltage has been challenging due to issues related to ion diffusion and accumulation. In this study, an electro-ionic soft actuator is fabricated using TiCT MXene and eutectic gallium-indium (EGaIn) composite material as the bilayer electrode and methylammonium formate/1-ethyl-3-methylimidazolium tetrafluoroborate/poly(vinylidene fluoride) (MAF-EMIMBF/PVDF) as the ionic liquid-type electrolyte.

Phylogenomic data resolved the deep relationships of Gymnogynoideae (Selaginellaceae).

The unresolved phylogenetic framework within the Selaginellaceae subfamily Gymnogynoideae (ca. 130 species) has hindered our comprehension of the diversification and evolution of Selaginellaceae, one of the most important lineages in land plant evolution. Here, based on plastid and nuclear data extracted from genomic sequencing of more than 90% species of all genera except two in Gymnogynoideae, a phylogenomic study focusing on the contentious relationships among the genera in Gymnogynoideae was conducted.

Association of the Healthy Dietary Index 2020 and its components with chronic respiratory disease among U.S. adults.

Background: Chronic respiratory disease is an important public health problem in the United States and globally. Diet, an important part of a healthy lifestyle, is also relevant to chronic respiratory health. We aimed to explore the relationship between overall dietary quality and the risk of chronic respiratory disease (CRD), include chronic bronchitis (CB), emphysema and asthma.

CO electrolysis to multi-carbon products in strong acid at ampere-current levels on La-Cu spheres with channels.

Achieving satisfactory multi-carbon (C) products selectivity and current density under acidic condition is a key issue for practical application of electrochemical CO reduction reaction (CORR), but is challenging. Herein, we demonstrate that combining microenvironment modulation by porous channel structure and intrinsic catalytic activity enhancement via doping effect could promote efficient CORR toward C products in acidic electrolyte (pH ≤ 1). The La-doped Cu hollow sphere with channels exhibits a C products Faradaic efficiency (FE) of 86.

High-performance and frost-resistance MXene co-ionic liquid conductive hydrogel printed by electrohydrodynamic for flexible strain sensor.

Conductive hydrogels with high performance and frost resistance are essential for flexible electronics, electronic skin, and soft robots. Nonetheless, the preparation of hydrogel-based flexible strain sensors with rapid response, wide strain detection range, and high sensitivity remains a considerable challenge. Furthermore, the inevitable freezing and evaporation of water in sub-zero temperatures and dry environments lead to the loss of flexibility and conductivity in hydrogels, which seriously limits their practical application.

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Hydrogels have emerged as promising candidates for biomedical applications, especially in the field of antibacterial therapeutics, due to their unique structural properties, highly tunable physicochemical properties, and excellent biocompatibility. The integration of stimuli-responsive functions into antibacterial hydrogels holds the potential to enhance their antibacterial properties and therapeutic efficacy, dynamically responding to different external or internal stimuli, such as pH, temperature, enzymes, and light. Therefore, this review describes the applications of hydrogel dressings responsive to different stimuli in antibacterial therapy.

Synthesis of Hydroxylamine via Ketone-Mediated Nitrate Electroreduction.

Hydroxylamine (HA, NHOH) is a critical feedstock in the production of various chemicals and materials, and its efficient and sustainable synthesis is of great importance. Electroreduction of nitrate on Cu-based catalysts has emerged as a promising approach for green ammonia (NH) production, but the electrosynthesis of HA remains challenging due to overreduction of HA to NH. Herein, we report the first work on ketone-mediated HA synthesis using nitrate in water.

Chemical transformation mechanism for blue-to-green emitting CsPbBr nanocrystals.

Recently, metal-halide perovskites have rapidly emerged as efficient light emitters with near-unity quantum yield and size-dependent optical and electronic properties, which have attracted considerable attention from researchers. However, the ultrafast nucleation rate of ionic perovskite counterparts severely limits the in-depth exploration of the growth mechanism of colloidal nanocrystals (NCs). Herein, we used an inorganic ligand nitrosonium tetrafluoroborate (NOBF) to trigger a slow post-synthesis transformation process, converting non-luminescent CsPbBr NCs into bright green luminescent CsPbBr NCs to elucidate the concrete transformation mechanism four stages: (i) the dissociation of pristine NCs, (ii) the formation of Pb-Br intermediates, (iii) low-dimensional nanoplatelets (NPLs) and (iv) cubic CsPbBr NCs, corresponding to the blue-to-green emission process.

1D/2D Heterostructured WS@PANI Composite for Highly Sensitive, Flexible, and Room Temperature Ammonia Gas Sensor.

Flexible and room-temperature (RT) ammonia gas sensors are needed for exhaled breath detection and recognition. Two-dimensional transition metal disulfides are potential materials for RT gas sensing because of their low band gap and a large number of edge-exposed sites that can provide strong binding to gas molecules. In this work, a 1D/2D heterostructured composite material of 2D tungsten disulfide (WS) modified with 1D polyaniline (PANI) was proposed.

High-fidelity intracellular imaging of multiple miRNAs stimulus-responsive nanocarriers and catalytic hairpin assembly.

An advanced nanoplatform was developed by integrating catalytic hairpin assembly (CHA) with glutathione-responsive nanocarriers, enabling superior imaging of dual cancer-related miRNAs. Two distinct CHA circuits for the sensing of miRNA-21 and miRNA-155 were functionalized on biodegraded MnO. In the presence of GSH and the corresponding miRNAs, the degraded MnO released the DNA cargos, activating the CHA circuits and recovering the fluorescence.