Construction of Isotropy-Enhanced Honeycomb and Its Deformation Behaviors in Multi-Directions.

Honeycomb structures are widely constructed as cores in sandwich panels with lightweight characteristics and excellent out-of-plane properties. However, their in-plane performances are significantly inferior. This research proposed a novel isotropy-enhanced honeycomb (IEH) with interleaved layers, which is constructed by offsetting the initial seed distributions across layers and then generating hexagonal cells via Voronoi tessellation.

Motives of Chinese foreign direct investment in Africa: With regulation effects of institutional quality.

This article analyzes the motives of Chinese foreign direct investment (FDI) in Africa and the impact of the institutional quality of the host country for the period between 2003 and 2022 from both static and dynamic perspectives by using the OLS, PPML, and GMM methods. The results show that: China has obvious market-, and efficiency-seeking motives, but weak resource- and strategic asset-seeking motives. There is a tipping point for market- and efficiency-seeking motives.

Calcium Ion Mixing Modes Govern Membrane Fouling Mitigation During Membrane-Based Recovery of Extracellular Polymeric Substances.

Recycling extracellular polymeric substances (EPSs) from excess sludge in wastewater treatment plants has garnered significant research attention. Membrane separation offers a promising approach for EPS concentration; however, membrane fouling remains a critical challenge. Previous studies demonstrate that Ca addition effectively mitigates membrane fouling.

Topological edge states in concave hexagonal gyroscope phononic crystals.

The study of gyroscopic phononic crystals (GPCs) opens new directions for topological acoustics. Based on the propagation of torsional waves in the structure, a GPC with lattice of concave hexagonal is proposed by introducing the gyroscope element into the concave hexagonal infinite periodic structure. The bandgap characteristics of GPC are analyzed, and the mechanisms of opening the Dirac cone and generating topological edge states due to changes in gyroscope torque are discussed.

Ozone activation over core-shell nanoreactors for enhanced organic pollutants degradation: Surface-bound superoxide radicals induced by confinement effect.

The ubiquity of conventional radical-mediated oxidation pathways in ozone-based advanced oxidation processes (AOPs) fundamentally limits their practical efficacy, particularly in achieving efficient organic degradation while minimizing interference from complex water matrices. To address this challenge, a novel core-shell nanoreactor (FeMn-700) was constructed through controlled pyrolysis of FeMn Prussian blue analogue (PBA) precursors for catalytic ozonation. This architecture creates a confined microenvironment where synergistic interactions between Fe/Mn active sites and reactants enable surface-mediated oxidation mechanisms.

Unveiling Roles of Nonradical Electron-Donation Pathway in Peroxymonosulfate Activation for Boosted Interfacial Radical Generation.

In conventional studies, radicals and nonradicals were often considered independent mechanisms for organic pollutant oxidation, with their potential interaction between radicals and nonradicals largely overlooked in Fenton-like reactions. Herein, Cu-CoO catalysts (x wt% Cu-CoO/OVs) featuring bifunctional bonding centers were fabricated, which enabled simultaneous co-capture of electron-rich contaminants and peroxymonosulfate (PMS) at their interfaces. The optimized 0.

Spatial characteristics and determinants of traditional village distribution in Guizhou Province.

This study employs a range of analytical techniques, including the geographical detector, kernel density estimation, imbalance index, geographical concentration index, and nearest neighbor index, all integrated with ArcGIS 10.8, to examine and illustrate the spatial distribution of 757 traditional villages across Guizhou, revealing an aggregated spatial distribution pattern of traditional villages, i.e.

Biodegradation of Benzo(a)pyrene in Contaminated Soil: Plant and Microorganism Contributions from Isotope Tracing.

Biological degradation effectively removes benzo(a)pyrene (BaP) from contaminated soil; however, knowledge regarding the contributions of plant absorption, microbial degradation, and volatilization to BaP removal remains limited. In this study, the BaP removal pathway in contaminated soil was investigated. The structural evolution of the microbial community in contaminated soil was revealed using a comparative experimental study.

Z-scheme MIL-88A(Fe)/LaFeO heterostructured photocatalyst: Boosting photo-Fenton activity for enhanced organic pollutant detoxification.

A series of MIL-88A(Fe)/LaFeO were prepared by mechanical ball-milling method for boosted photo-Fenton ofloxacin (OFX) degradation under visible light irradiation. The optimized M160L40/photo-Fenton system accomplished complete degradation of 5.0 mg/L OFX within 10 min, attributed to synergistic enhancement of mass transfer efficiency and photogenerated carriers separation.

Investigation of the exposure risk of TEX released from outdoor synthetic rubber tracks to adolescents of different heights.

Toluene, ethylbenzene, and xylene (TEX) are the primary pollutants released from outdoor synthetic rubber tracks and can be easily absorbed in the respiratory tract and skin, leading to harmful health effects. Exploring the mass transfer characteristics of TEX emitted from tracks and its effects on adolescents at different heights is thus important. In this study, the key emission parameters were determined via environmental chamber experiments.

Multi-objective optimization of urban stormwater systems.

Under the dual impact of rapid urbanization and climate change, flooding has become one of the major natural disasters in urban areas. Urban stormwater systems face challenges such as limited capacity, inefficient connectivity, and inadequate control measures. Traditional stormwater management systems often fail to balance flood risk reduction with cost-effectiveness.

Identification of carbon and nitrogen multimedia fate in bioretention based on C and N isotope tracers.

Bioretention is one of the widely used green stormwater infrastructural measures for the efficient removal of pollutants from stormwater runoff. However, the multimedia fate of carbon and nitrogen within these systems is still not completely understood. In this work, we employed C and N isotope tracers to investigate the chemical transformation of carbon and nitrogen across different media layers in the bioretention.

Study and Realization of Dual-Mode Mobile Light Detection and Ranging Measurement System.

Most existing mobile LIDAR measurement systems use a GNSS/INS combination method for attitude positioning. This method requires a constant GNSS signal to correct the IMU's positioning and attitude. In the absence of GNSS signals, the IMU's positioning accuracy rapidly deteriorates from the centimeter to sub-meter, or even meter levels.

Dynamic Deformation Analysis of Super High-Rise Buildings Based on GNSS and Accelerometer Fusion.

To accurately capture the dynamic displacement of super-tall buildings under complex conditions, this study proposes a data fusion algorithm that integrates NRBO-FMD optimization with Adaptive Robust Kalman Filtering (ARKF). The NRBO-FMD method preprocesses GNSS and accelerometer data to mitigate GNSS multipath effects, unmodeled errors, and high-frequency noise in accelerometer signals. Subsequently, ARKF fuses the preprocessed data to achieve high-precision displacement reconstruction.

Integrated evaluation for advanced removal of nitrate using novel solid carbon biochar/corncob/PHBV composite: Insight into electron transfer and metabolic pathways.

This study developed a novel Biochar/Corncob/PHBV (BCP) composite material, integrating the electron transfer capability of biochar, the cost-effectiveness of corncob, and the sustained carbon release performance of PHBV. The BCP system achieved a maximum nitrate removal efficiency of 97.3 %, significantly outperforming the single PHBV system (91.

Changes in activity spaces, life spaces, and exposures to physical activity-promoting environments among women with overweight or obesity.

Understanding factors associated with successful adherence and maintenance of weight loss interventions is important to potentially increase efficacy. Activity spaces and environmental exposures are two understudied factors that may be associated with intervention adherence and outcomes. Women with overweight or obesity (n = 498) from two weight loss intervention studies, Reach for Health and Metabolic, Exercise, and Nutrition at University of California San Diego, wore accelerometer and Global Positioning System (GPS) devices for 1 week at baseline and at 6-month follow up.

Photocatalytic Degradation of Organic Pollutants by Sulfate Radicals Activated by Defective NH-MIL-88B.

Photocatalysis has been recognized as a viable technology for pollutant degradation in wastewater, owing to its ability to generate reactive radicals under photoirradiation. Among these, sulfate radicals have been attracting significant attention due to their strong oxidizing properties; yet the specific mechanism of action has remained elusive thus far. In this study, defective NH-MIL-88B (DNMB) is prepared via a facile hydrothermal procedure in the presence of potassium sodium tartrate and found to facilitate the production of sulfate radicals from sulfate anions under visible light irradiation, due to partial reduction of Fe to Fe in the NMB skeleton by the added tartrate that enriches the Fe/Fe redox couples, in addition to other reactive species like superoxide radicals and hydroxy radicals.

Anaerobic membrane distillation bioreactors for saline organic wastewater treatment: Impacts of salt accumulation on methanogenesis and microbial community.

Anaerobic membrane distillation bioreactor (AnMDBR), which possesses several distinctive advantages such as high-quality water production, desalination and methanogenesis, shows enormous potential in saline organic wastewater (SAOW) treatment. However, salt accumulation in the reactor may deactivate anaerobic organisms and impede methanogenesis. In this work, effects of salt accumulation were comprehensively investigated regarding pollutant removal performance and methanogenesis in AnMDBRs over a 30-d operation.

Assessing carbon emission impacts of sponge city development: insights from runoff reduction analysis.

This study aimed to quantify the impact of sponge city facilities on both runoff reduction and carbon emission mitigation, providing valuable insights for sustainable urban development. Using the Storm Water Management Model (SWMM) 5.2 in conjunction with carbon emission factor calculations, we comparatively evaluated the annual runoff reduction and carbon emission abatement potential of traditional drainage systems versus those incorporating sponge city facilities.

Indoor Localization Methods for Smartphones with Multi-Source Sensors Fusion: Tasks, Challenges, Strategies, and Perspectives.

Positioning information greatly enhances the convenience of people's lives and the efficiency of societal operations. However, due to the impact of complex indoor environments, GNSS signals suffer from multipath effects, blockages, and attenuation, making it difficult to provide reliable positioning services indoors. Smartphone indoor positioning and navigation is a crucial technology for enabling indoor location services.

A Cross-Modal Attention-Driven Multi-Sensor Fusion Method for Semantic Segmentation of Point Clouds.

To bridge the modality gap between camera images and LiDAR point clouds in autonomous driving systems-a critical challenge exacerbated by current fusion methods' inability to effectively integrate cross-modal features-we propose the Cross-Modal Fusion (CMF) framework. This attention-driven architecture enables hierarchical multi-sensor data fusion, achieving state-of-the-art performance in semantic segmentation tasks.The CMF framework first projects point clouds onto the camera coordinates through the use of perspective projection to provide spatio-depth information for RGB images.

Risk Assessment of Heavy Metals in Road-Deposited Sediments and Correlation Distribution of DOM and Heavy Metals in Beijing, China.

Road-deposited sediments (RDS) from 28 sites in Beijing were studied and analyzed for eight heavy metals. In RDS, the levels of Cr, Ni, Cu, Zn, As, Cd, Pb and V were 2.76, 1.

Multi-Scale Spatiotemporal Feature Enhancement and Recursive Motion Compensation for Satellite Video Geographic Registration.

Satellite video geographic alignment can be applied to target detection and tracking, true 3D scene construction, image geometry measurement, etc., which is a necessary preprocessing step for satellite video applications. In this paper, a multi-scale spatiotemporal feature enhancement and recursive motion compensation method for satellite video geographic alignment is proposed.

Achieving partial nitrification and denitrification coupled with simultaneous partial nitrification, anammox, and denitrification (PND-SNAD) by the inhibition of sulfide to accomplish stabilized nitrogen removal.

The simultaneous partial nitrification, anammox, and denitrification (SNAD) process is widely applied for treating high-ammonia wastewater, but its application to low-ammonia organic wastewater has been scarcely explored. In this study, a partial nitrification and denitrification coupled with simultaneous partial nitrification, anammox, and denitrification (PND-SNAD) system was established to treat organic wastewater with low ammonia concentration. Experimental results revealed that sulfide at 5 mg/L selectively inhibited nitrite-oxidizing bacteria (NOB) but had little effect on ammonium-oxidizing bacteria (AOB).

Microstructural Analysis of Sand Reinforced by EICP Combined with Glutinous Rice Slurry Based on CT Scanning.

Sandy soils are prone to engineering issues due to their high permeability and low cohesion in the natural environment. Therefore, eco-friendly reinforcement techniques are required for projects such as subgrade filling and soft soil foundation reinforcement to enhance their performance. This study proposes a synergistic reinforcement method that combines Enzyme-Induced Calcium Carbonate Precipitation with Glutinous rice slurry (G-EICP).