Peroxidase mimics through DEHP-rich plastic wastes upcycling for colorimetric sensing neonicotinoid insecticides.

Pesticide residues in agricultural products are closely related to people's daily dietary health, and the detection for pesticide residues is always a concern. Simple and sustainable methods for real-time monitoring and screening of pesticide residues still faced challenges. The dechlorination and plasticizers decomposition to achieve high-value recycling of waste plastics was urgent demand.

Influence of joint fissure occurrence on stress distribution of coal wall in large mining height.

In order to ensure the stability of coal wall of fully mechanized mining face with large mining height, Aiming at the prominent problem that the rib spalling rate of coal wall in fully mechanized mining face with large mining height is high and is significantly affected by joint cracks, this paper comprehensively uses theoretical analysis, numerical simulation and other research methods to explore the damage effect of joint cracks on coal wall, and obtains the influence law of joint surface occurrence on abutment pressure in limit equilibrium area. Based on the stability theory of coal wall pressure bar, the expression function of abutment pressure distribution in the limit equilibrium zone of large mining height working face is constructed. The research shows that under the condition of large mining height working face, with the increase of joint plane dip angle, the damage of coal shows a trend of increase-decrease-increase, and the abutment pressure at the same position in the limit equilibrium zone shows a trend of decrease-increase-decrease.

Triple Regulation of Superhydrophilic-Superaerophobic Mo,V-NiS/NiS Heteronanoflowers for Efficient Bifunctional Water Splitting and Multi-Source Energy-Driven Hydrogen Production.

The urgent demand for sustainable energy has highlighted electrocatalytic water splitting as a key carbon-neutral technology. However, nickel sulfide-based catalysts face challenges of limited intrinsic activity and inefficient gas bubble release. Herein, a triple-engineering strategy constructs a hierarchical Mo, V-co-doped NiS/NiS heteronanoflower electrode in situ on nickel foam (NF) via a one-step hydrothermal synthesis.

Long-term Land Cover Dataset of the Mongolian Plateau Based on Multi-source Data and Rich Sample Annotations.

The Mongolian Plateau (MP), with its unique geographical landscape and nomadic cultural features, is vital to regional ecological security and sustainable development in North Asia. Existing global land cover products often lack the classification specificity and temporal continuity required for MP-specific studies, particularly for grassland and bare area subtypes. To address this gap, a new land cover classification was designed for MP, which includes 14 categories: forests, shrubs, meadows, real steppes, dry steppes, desert steppes, wetlands, water, croplands, built-up land, barren land, desert, sand, and ice.

Tunnel-structured IrO unlocks catalytic efficiency in proton exchange membrane water electrolyzers.

Proton exchange membrane water electrolyzers face challenges due to high iridium loading and sluggish oxygen evolution reaction kinetics when using conventional rutile-structured iridium oxide nanocatalysts. Here we find that iridium oxide catalysts with a specific tunnel-type crystal structure exhibit highly localized reactivity, where regions at tunnel mouths drive oxygen evolution far more efficiently than tunnel-wall regions. The intrinsic activity of tunnel mouths is 25-fold higher than that of tunnel walls, with shorter nanorods achieving a better balance between active site exposure and electron/mass transport efficiency.

Synergistic WO-PBI hybrid electrochromic materials with an enhanced diffusion coefficient and cycling reversibility inspired by the "Big Rocks" theory.

The key technology underlying intelligent energy conversion and display systems hinges on high-performance electrochromic materials. To drive their electrochemical redox reactions, facilitating ion/electron transport and intercalation/deintercalation the rational design of a highly connected electrode structure is critical. However, persistent challenges include inadequate interconnection between active species - stemming from the inherent limitations of simple inorganic materials and severe performance degradation during long-term electrochemical cycling.

Investigation of the Reinforcement Mechanism and Impact Resistance of Carbon Hollow Microsphere-Reinforced PDMS Composites.

For meeting the growing demand for lightweight impact-resistant materials, this study designed and fabricated a carbon hollow microsphere (CHM)-reinforced polydimethylsiloxane (PDMS) composite and systematically investigated the influence of CHM packing structure on its energy absorption performance. Through optimizing the controllable preparation processes of the CHMs, CHMs with low breaking rates and novel structural stability were successfully prepared. A vacuum-assisted mixing-casting method was employed to synthesize the CHM/PDMS composites with varying CHM contents (0~10 wt.

A Sensor Data Prediction and Early-Warning Method for Coal Mining Faces Based on the MTGNN-Bayesian-IF-DBSCAN Algorithm.

In the context of intelligent coal mine safety monitoring, an integrated prediction and early-warning method named MTGNN-Bayesian-IF-DBSCAN (Multi-Task Graph Neural Network-Bayesian Optimization-Isolation Forest-Density-Based Spatial Clustering of Applications with Noise) is proposed to address the challenges of gas concentration prediction and anomaly detection in coal mining faces. The MTGNN (Multi-Task Graph Neural Network) is first employed to model the spatiotemporal coupling characteristics of gas concentration and wind speed data. By constructing a graph structure based on sensor spatial dependencies and utilizing temporal convolutional layers to capture long short-term time-series features, the high-precision dynamic prediction of gas concentrations is achieved via the MTGNN.

Hysteresis Loops Design for Nanoporous Ferroelectrics.

The design and adjustable properties of nanoporous materials are important for current and future technological applications, research, and development. In addition, nanoporous ferroelectric materials have the potential to achieve competitive ferroelectric, dielectric, and piezoelectric characteristics. In this work, using the phase-field model, we found that the shape of pores in barium titanite ceramics governs the formation of the ferroelectric domain structure and the switching hysteresis loop.

Distributed optical fiber acoustic wave sensor detection technology for gangue slurry pipeline conveying blockage.

The pipeline conveying system as the gangue slurry filling technology lifeline. The occurrence of pipeline blockage will lead to the paralysis of the entire filling system; timely detection of pipeline blockage and early warning are needed to ensure the safe, stable, and efficient operation of the core elements of the coal gangue slurry filling system. Based on this, this paper summarizes and analyzes the classification of pipeline blockage and summarizes the current pipeline conveying blockage detection technologies.

Softening and instability evolution of strip coal pillar under water immersion in goaf.

The softening and instability of the coal pillar caused by water immersion is the primary factor contributing to water inrush in the goaf of the same layer. Similarly, the softening and instability of underground reservoir dam bodies due to water immersion is a critical factor leading to reservoir water failure and dam breakage. Investigating the dynamic process of coal pillar softening and instability under water immersion conditions is of paramount importance for the prevention and control of mine water hazards in mining areas and the safety assessment of underground reservoirs.

Research status of roof water and sand bursting disaster in thick bedrock stope of coal seam.

The frequent occurrences of compound disasters involving roof water-sand inrush coupled with strong ground pressure manifestations in China's western mining areas of Huanglong and Ningdong coal bases exhibit distinct characteristics from conventional non-dynamic water-sand inrush disasters in shallow-buried or near-unconsolidated stratum stopes. This study has identified two critical scientific challenges that constitute bottlenecks in revealing the disaster formation mechanism: the response patterns of abutment pressure distribution beneath hard rock strata and basic roof loading to the deterioration of weakly cemented formations; The dynamic formation mechanism of inrush from deteriorated weakly cemented strata and the evolutionary behavior of flow channels under hard rock fracturing. Three principal research components essential for elucidating the disaster mechanism have been systematically established: the feedback characteristics and response relationships of water-induced deterioration in weakly cemented strata to influencing factors; The variation patterns of stress conditions in overlying hard rock strata and basic roof with the deterioration of weakly cemented formations; The dynamic mechanisms of inrush from deteriorated weakly cemented strata and channel evolution under incremental loading.

Multitask allocation model of the coal foreign object sorting robot based on optimal capacity and benefit.

Robot technology has important application value in coal mines, non-coal mines, and other fields. However, the existing coal gangue multi-task allocation methods cannot be used for the coal foreign object with multi kinds, complex features, and spatiotemporal randomness, and it is difficult to solve comprehensively improve coal quality, human-machine safety and environmental pollution. Firstly, this paper constructs a multi-task allocation model of coal foreign object sorting robot (CFoSR) based on optimal capacity and benefit.

Permeability of the composite coal in the grouting section around the CBM drainage borehole in the coal mine.

The leakage of borehole during CBM drainage leads to a significant decrease in concentration, severely restricting the effectiveness of gas drainage in the coal seam. After grouting in the gas pre-drainage boreholes, the slurry around the borehole forms a grout-graded composite structure with the broken coal, and its permeability is a key factor affecting the sealing. Triaxial seepage tests of the composite specimen were conducted with different degrees of fragmentation and moisture content to investigate its permeability.

Quantitative Analysis of the Formation and Evolution of Underpressure in Tight Sandstone Reservoirs in the Craton Basin: The Chang 7 Member in the A Area of the Ordos Basin.

The Ordos Basin is a typical craton basin. Underpressure exists in the tight sandstone reservoirs of the Chang 7 member of the Upper Triassic Yanchang Formation in the Yishan slope of the basin. However, overpressure was verified in these reservoirs during the Early Cretaceous period, and the evolution process from overpressure to underpressure is still unclear.

Evolution in functional groups of agricultural straw during pyrolysis at elevated temperature: In situ synchrotron radiation infrared spectroscopy.

Thermal evolution of functional groups during pyrolysis of wheat and rice straws was investigated using in situ diffuse reflectance infrared Fourier transform spectroscopy at 200 °C to 400 °C. Aromatic rings transitioned through substitution states, with tri-/tetra-/penta-substituted configurations coexisting below 300 °C before complete conversion to tri-substituted forms. Oxygen-containing groups showed bifurcated behaviour: ether CO bonds decreased by 15.

Roadway roof stability grading method based on multi-index optimization.

Currently, most of the roadways adopt one support design strategy, which leads to high stress and insufficient support parameters in some crushed areas of the roadways and excess support parameters in some stable regions. There is an urgent need for a reliable method of grading the roadway perimeter rock to realize a reasonable support design for the whole area and cycle of the roadways. Taking Xiaobaodang No.

Coupling mechanisms of community assembly and pollutant removal in algal-bacterial granular sludge systems.

This study comparatively assessed algal-bacterial granular sludge (ABGS) decontamination performance and microbial community mechanisms under two cultivation modes: flocculated sludge transformed into ABGS (AS_ABGS) and aerobic granular sludge transformed into ABGS (AGS_ABGS). The results indicated that, AS_ABGS achieved superior pollutant removal (COD: 92.2 %, TN: 82.

Two-dimensional vacancy-doped MXene nanomaterials for supercapacitors.

Supercapacitors (SCs) are high-performance electrochemical energy storage devices, and their performance hinges on the electrode materials. 2D MXene nanomaterials, with their excellent conductivity, tunable interlayer spacing, and rich surface chemistry, have emerged as highly promising electrode materials for SCs. However, the capacitive performance of intrinsic MXene fails to meet application requirements.

Early-life indoor environmental exposures and COVID-19 outcomes in Chinese preschool children: A secondary analysis of a multicenter study.

Background: Indoor environmental factors during early life may influence susceptibility to respiratory infections, but their relationship with COVID-19 outcomes in children and parents remains unclear.

Objectives: This study investigates associations between early-life household exposures (fuel type, heating methods, ventilation patterns, redecoration, dampness/mold, incense, and mosquito coil use) and COVID-19 infection and sequelae in children and their parents.

Methods: We conducted a multicenter survey among 20,012 preschool children and their parents (total 60,036 participants) from nine cities in China between December 2019 and May 2023.

Thermal Stability of MXene: Current Status and Future Perspectives.

2D transition metal carbides and carbonitrides (MXene), as an emerging family of 2D nanomaterials, have been justified to possess unusual electrical, chemical and mechanical properties. However, the layered structure of MXene exhibits poor stability at elevated temperatures, which is ascribed to the oxidation induced by defects in transition metal layers and terminations. Therefore, despite the considerable potential of MXene in electric energy storage, sensor technology, and many other fields, its practical application under extreme conditions remains constrained.

Effects of co-metabolic carbon sources on the formation of Algal-Bacterial Granular Sludge and pollutant degradation under quinoline stress: sludge characteristics, degradation pathways, and molecular mechanisms.

Algal-bacterial granular sludge (ABGS) technology exhibits efficient pollutant metabolic capacity through synergistic algal-bacterial interactions, demonstrating substantial potential for sustainable industrial wastewater treatment. However, maintaining stable and efficient operation under quinoline stress remains a critical challenge. This study systematically examined the effects of co-metabolic carbon source type (starch or phenol) on sludge characteristics, pollutant removal performance, quinoline degradation pathways, and the microbial community ecology in ABGS under quinoline stress.

Experimental study on the influence of ground temperature and pore water pressure on the mechanics of excavation unloading sandstone.

As tunnel engineering in western China advances deeper underground, it encounters increasing issues of high ground temperature and high water pressure. To study the mechanical properties of unloading sandstone under the combined effects of temperature and pore water pressure, triaxial unloading and reloading experiments were conducted on sandstone under different temperatures, pore water pressures, and confining pressures. The results showed: (1) The peak strength of unloading sandstone decreases with increasing temperature and pore water pressure.

Balanced Iodophilicity and Solvophilicity Unlocks Fast Iodine Conversion Chemistry.

The shuttling of polyiodides and sluggish redox kinetics greatly hinder the implementation of an aqueous Zn-I battery. Despite numerous catalysts have been implemented to improve the iodine cathode stability, an important aspect, the balance between polyiodide adsorption and interfacial mass transport kinetics at the cathode surface, has been overlooked. It is known that insufficient intermediate trapping ability will cause low iodine utilization and fast capacity decay.

Application of CycleGAN-based low-light image enhancement algorithm in foreign object detection on belt conveyors in underground mines.

Clear monitoring images are crucial for the safe operation of belt conveyors in coal mines. However, in underground environments, low illumination and uneven brightness can significantly degrade image quality, thereby affecting the detection of foreign objects in coal flow and reducing the reliability of safety monitoring equipment. To address this issue, an improved CycleGAN-based low-illumination image enhancement algorithm is proposed, which employs a cycle generative adversarial network for unsupervised learning.