Bioinspired mesoporous hybrid materials based on bio-silica structures for efficient water collection under dry-wet cycles in karst area.

Karst regions face severe water scarcity due to rapid hydrological leakage and complex geological structures. To address this challenge, this study developed a bioinspired porous condensation material by integrating sand-based substrates with optimized hydrophilic-hydrophobic properties and aluminum fiber modifications. Through orthogonal experiments, the optimal formulation (0.

Morphological and phylogenetic analyses reveal two new species of (Tubeufiales, Tubeufiaceae) from freshwater habitats in China.

is a genus of helicosporous hyphomycetes distinguished by a high degree of morphological variation in its asexual morphs. During an investigation of helicosporous fungi in tropical regions, four fungal strains were isolated from submerged decaying wood in Hainan Province, southern China. Multigene phylogenetic analyses based on a combined ITS-LSU- sequence dataset were conducted to determine the phylogenetic placement of the four fungal strains, which showed two distinct new species.

Changes in extreme climate events during the tobacco growing season and risk assessment of climate disasters: A case study in Southwest China.

Tobacco is an important economic crop globally, yet its production is increasingly threatened by extreme climate events, which affect both yield and quality. This study explores the temporal and spatial evolution of extreme climate events during the tobacco growing season in Southwest China and assesses associated climate disaster risks. By applying a range of extreme climate indices, spatial analysis techniques, and a climate disaster risk assessment model, the study identifies significant trends in future climate scenarios.

Characterization and Exploration of the Flavor Profiles of Green Teas from Different Leaf Maturity Stages of cv. Fudingdabai Using E-Nose, E-Tongue, and HS-GC-IMS Combined with Machine Learning.

Understanding how leaf maturity affects the flavor attributes of green tea is crucial for optimizing harvest timing and processing strategies. This study comprehensively characterized the flavor profiles of Fudingdabai green teas at three distinct leaf maturity stages-single bud (FDQSG), one bud + one leaf (FDMJ1G), and one bud + two leaves (FDTC2G)-using a multimodal approach integrating electronic nose, electronic tongue, HS-GC-IMS, relative odor activity value (rOAV) evaluation, and machine learning algorithms. A total of 85 volatile compounds (VOCs) were identified, of which 41 had rOAV > 1.

Principle and calculation method of hydraulic fracturing technique for in-situ stress based on two arbitrary holes.

In order to precisely obtain the magnitude and orientation of in-situ stress in coal mine roadway, the principle and calculation method of hydraulic fracturing technique for in-situ stress with two arbitrary holes were established in this study. Deriving from the basic principle of the traditional hydraulic fracturing in-situ stress testing, this method, based on the basic data of in-situ stress measured from two arbitrary test holes, performed three stress equivalent transformations following the stress transformation formula in elasticity mechanics. The results suggest that all six stress values representing the stress state at a point were accurately obtained after mechanical and mathematical derivation.

Numerical study on optimal geometric parameters of lining structures for roadway support using the artificial bee colony algorithm.

Lining structures are commonly used for roadway support in engineering practice; however, the method of determining the geometric parameters of lining structures should be properly addressed. On the one hand, the stability of roadways should be guaranteed, and on the other hand, the economy should also be considered. In this work, a numerical simulation is conducted with FLAC3D commercial software combined with the artificial bee colony algorithm, and the optimal geometric parameters of the lining structure are determined: the thickness of the bearing arc is 0.

Performance Study on Preparation of Mine Backfill Materials Using Industrial Solid Waste in Combination with Construction Waste.

The resource utilization of construction waste and industrial solid waste is a crucial aspect in promoting global urbanization and sustainable development. This study focuses on the preparation of mine backfill materials using construction waste in combination with various industrial solid wastes-ground granulated blast furnace slag (GGBFS), fly ash (FA), silica fume (SF), phosphorus slag (PS), fly ash-phosphorus slag-phosphogypsum composite (FA-PS-PG), and fly ash-phosphorus slag-β-phosphogypsum composite (FA-PS-βPG)-under different substitution rates (50%, 55%, 60%) as control parameters. A total of 19 mix proportions were investigated, evaluating their slump, dry density, compressive strength, uniaxial compressive stress-strain relationship, micromorphology, and phase composition.

Analysis of Dynamic Properties and Johnson-Cook Constitutive Relationship Concerning Polytetrafluoroethylene/Aluminum Granular Composite.

The polytetrafluoroethylene/aluminum (PTFE/Al) granular composite, a common formulation in impact-initiated energetic materials, undergoes mechanochemical coupling reactions under sufficiently strong dynamic loading. This investigation discusses the dynamic properties and the constitutive relationship of the PTFE/Al granular composite to provide a preliminary guide for the research on mechanical properties of a series of composite materials based on PTFE/Al as the matrix. Firstly, the 26.

Modification and validation of cracked zone range under coupled in-situ stress and blasting load.

Exploring the characteristics of blasting crack propagation under the action of in-situ stress is of great significance for guiding the layout of blast holes on site. This paper proposed a modified calculation method for the range of crushed zone and cracked zone under the action of in-situ stress based on the coupled stress distribution characteristics of in-situ stress and blasting load. A numerical simulation model for single hole blasting was established based on the Holmquist-Johnson-Cook (HJC) model, and the modified method was validated.

A Novel Endophytic Fungus, Alternaria semiverrucosa, and Its Ethyl Acetate Extract Inhibit the Proliferation, Migration, and Invasion of Cervical Cancer Cells.

The present study aimed to identify the endophytic fungus ZZ-HZ-13 from Taxus chinensis var. marei and to investigate its biological activity. A novel species, Alternaria semiverrucosa (ZZ-HJ-13), was identified through morphological analysis combined with multigene phylogeny.

Sampling zero stability in sampled data control systems with delays using backward triangle sample and hold.

The impact of time delays on the stability of sampling zeros in sampled-data (SD) control systems is investigated. While delays, arising from communication and computational latencies, are known to critically influence zero-dynamics stability, their specific effect on sampling zeros remains less explored. This work establishes novel conditions for sampling zero stability under time delays, employing the Backward Triangle Sample-and-Hold (BTSH) method for signal reconstruction.

The mechanism of permeability enhancement of coal seams by hydraulic fracturing based on the characterization of coal physical properties.

To further understand the mechanism of pressure relief and permeability enhancement in coal seams through hydraulic punching, this study employs microscopic testing methods such as porosity testing, spectral analysis, and image scanning, combined with simulation techniques, to analyze the impact of hydraulic punching on both the macro- and microstructures of coal from a microscopic perspective. The results indicate that the particle size distribution of the punch samples is similar to that of the original coal and drilled samples, with differences only in the larger particle size range. The impact damage during drilling and punching is mechanical in nature and primarily affects the macro dimensions of the coal.

Development of Novel Bacteriostatic Agents Derived from Natural Product Formononetin and Their Action Mechanisms in Crop Diseases Management.

The present study involved the development of a series of novel antibacterial compounds based on the structure of the natural product formononetin. The activity experiments demonstrated that compound exhibited the most potent inhibitory effects against () and pv citri (), with EC values of 0.9 and 2.

Environmental stressors drive fungal community homogenization and diversity loss in plateau freshwater lakes.

Background: Fungi play a crucial role in aquatic ecosystems by driving nutrient cycling, organic matter decomposition, and water purification. However, the diversity and community structure of aquatic fungi, particularly in plateau freshwater lakes, remain underexplored. This study used high-throughput sequencing to investigate fungal communities in three plateau lakes (Chenghai, Erhai, and Lugu) with varying water quality, focusing on how environmental factors shape community composition.

Oxidation behavior of TiC and TiCN and their potential photocatalytic activity in a semi-oxidized state.

The oxidation behavior of titanium carbide (TiC) and titanium carbonitride (TiCN) warrants significant attention. This study investigates the oxidation behavior of internally doped TiC and TiCN in ambient air by varying the oxidation temperature and explores their photocatalytic degradation activity. Macroscopic observations, combined with XRD and SEM analyses, reveal a pronounced color change during oxidation, with TiC exhibiting superior oxidation resistance compared to TiCN.

The sulfated modification of polysaccharide from Poria cocos and its prebiotic effects on gut microbiota.

Background: Poria cocos is a renowned medicinal and edible macrofungus in China. Alkali-soluble polysaccharide from Poria cocos (PCY) is one of its main active components. However, the biological activity and utilization of PCY are constrained by its poor water solubility.

Tailoring Stabilized Multilevel Dynamic Structure Evolution Enables 4.6 V High-Voltage Single-Crystal Ni-Rich Cathode.

Ni-rich layered oxides (Li[NiCoMn ]O (NCM, x≥0.8)) are promising cathodes for high-energy lithium-ion batteries but suffer from the inherent chemomechanical, structural, and interfacial instability, leading to severe dynamic structural degradation, especially under high-voltage operation. Herein, a self-engineered lattice modification has been developed for a single-crystal Ni-rich cathode by simultaneously incorporating Zr and Al via a facile thermal treatment.

Design, synthesis and anti-plant-bacterial (Xoc, Xac, Psa) activity of coumarins derivatives containing amide and sulfonamide moieties.

In this study, coumarin derivatives containing amide and sulfanilamide moieties were designed and synthesized, and their antibacterial activities were systematically evaluated. Among the synthesised compounds, compound A7 exhibited good inhibitory activity against Psa, with an EC value of 59.4 mg/L.

SLPDBO-BP: an efficient valuation model for data asset value.

Data asset value assessment is of strategic significance to the development of data factorization, in order to solve the problems of strong assessment subjectivity and low assessment efficiency and accuracy in traditional assessment methods. This article introduces the SLPDBO-BP data asset assessment model for data asset value assessment. Firstly, the sinusoidal chaos mapping strategy, the Levy flight strategy and the fusion of adaptive weight variation operators are integrated to increase the population diversity of the algorithm, broaden the search range, and augment the global optimization capability of the algorithm.

Effects of the Gully Land Consolidation Project on soil properties and carbon stocks of farmland in the Chinese Loess Plateau.

A megaproject named Gully Land Consolidation (GLC) was implemented in the Chinese Loess Plateau (CLP) to address food shortages. However, its effects on soil properties and carbon stocks remain unclear. This study evaluates the effects of the GLC project on soil properties and carbon stocks by analyzing the properties of 14 farmland soil profiles (0-500 cm depth) in the Gutun watershed (GT-T), a typical area treated by the GLC project.

Multiscale Combustion Kinetics of -Tetradecane: Integrating Reactive Dynamics with Kinetic Modeling.

Uncovering the inherent nature of fuel combustion depends on a detailed and accurate combustion reaction mechanism. This research examines the combustion characteristics of -tetradecane, which is a crucial component of transportation fuels. Employing advanced quantum chemical techniques, potential energy surfaces and computed rate constants for H atom abstraction by Ḣ/Ȯ(P)/ȮH/HȮ/ĊH radicals at the DLPNO-CCSD(T)/CBS(T-Q)//M06-2X/def2-TZVP level were outlined.

Feature-decorrelation adaptive contrastive learning for knowledge-aware recommendation.

Knowledge graphs (KGs) are utilized in recommendation systems due to their rich semantic information, with graph neural networks (GNNs) employed to capture multi-hop knowledge and relationships within KGs. However, GNN-based methods, with their iterative linear propagation and the complexity of entity features in KGs, face two significant challenges: (1) The linear iterative aggregation of high-order complex attribute entities can lead to feature loss and distortion in knowledge representation, thereby hindering effective feature modeling; and (2) High-order irrelevant knowledge along the propagation path can cause deviations in recommendation topics. To address these issues, we propose a feature-decorrelation adaptive contrastive learning method for knowledge-aware recommendations.

Elastic‒plastic analysis of rock surrounding a circular roadway considering plastic hardening and dilatancy characteristics.

Excavation of deep roadways induces plastic failure of the surrounding rock, resulting in roof caving and uncoordinated large deformation, which seriously threatens support safety and production efficiency. A four-stage stress‒strain model of the elastic zone‒plastic zone‒softening zone‒fracture zone of the surrounding rock in a deep roadway is established to analyze the range of the roadway fracture zone. The model considers the unified strength criterion, the nonassociated flow rule, and the influence of the intermediate principal stress and dilatancy coefficient.

The effectiveness of the TikTok flipped classroom method on students' academic performance in folk art course.

This study investigates the effectiveness of the TikTok flipped classroom method on students' academic performance in a Folk Art course through an empirical research design. The study procedure involved a pre-test examination of 102 first-year Fine Arts students at a Chinese vocational college, where two classes were selected based on their college entrance art exam scores to ensure comparable academic backgrounds. The teaching intervention, spanning eight weeks during the second semester of the 2023-2024 academic year, contrasted an experimental class employing the TikTok flipped classroom method with a control class utilizing traditional teaching methods.

Rock properties and adaptability of support structures in phosphorus mines: A case study of a phosphorus mine in Guizhou.

Over-supporting and under-supporting of the roadway perimeter rock in the mining process will affect the support effect, so the existing roadway perimeter rock support needs to be analysed, and the support structure parameters need to be adjusted accordingly. In order to study the deformation characteristics of the roadway surrounding rock, this article adopts FLAC3D software to simulate the stress distribution and deformation characteristics of the roadway surrounding rock under the existing anchor support, and analyses the test results of the support structure parameters based on mathematical methods. The results show that the existing support situation can improve the surrounding rock stress state, reduce the degree of stress concentration in the surrounding rock, effectively reduce the range of the plastic zone, and reduce the deformation value of the surrounding rock in the roadway, but it cannot effectively reduce the range of its plastic zone.