Chang'an University

Degradation-Grafting Mechanochemical Treatment of Recycled Polypropylene as an Asphalt Modifier: Rheological Behavior and Microscopic Mechanisms

As a common solid waste, recycled polypropylene (RPP) has been demonstrated to be a viable asphalt modifier for enhancing pavement performance. However, its direct application still faces bottlenecks including high processing temperatures, poor dispersion, and unstable performanc...

Abrupt permafrost thaw overwhelms vegetation-driven erosion reduction in sediment export on the Tibetan Plateau

Vegetation greening and abrupt permafrost thaw are reshaping sediment dynamics across the Tibetan Plateau, yet their relative effects on sediment delivery remain poorly quantified. Here we show that retrogressive thaw slumps are disproportionately important sediment sources, with...

Co-producing just sustainabilities: integrating local knowledge and geospatial analysis for climate-sensitive rural settlement planning in the East African Highlands

Highland rural settlements face increasing climate-related hazards, but vulnerability is shaped not only by environmental exposure but also by livelihood dependence, place-based relationships, and governance arrangements. This study examines how local knowledge and geospatial ana...

WAGRL: A Wind Adaptive Guidance Framework for Uncertainty-Aware UAV Trajectory Control

To address the challenges of wind-induced uncertainty, decision inconsistency, and safety risks in quadrotor trajectory tracking, this study presents a Wind Adaptive Guidance Reinforcement Learning (WAGRL) framework. Unlike conventional controllers relying on fixed aerodynamic mo...

Reflective–evaporative semi-flexible pavements for urban thermal regulation

Urban pavements influence heat exchange between transport infrastructure and the surrounding atmosphere, yet how surface evolution alters their cooling performance remains unclear. This study investigates the reflective–evaporative cooling of water-retentive semi-flexible pavemen...

Leadership as a human-systems capability: A mixed-method exploration of environmental consciousness and green innovative behavior

This study examines how transformational and benevolent leadership foster green innovative behavior in hospitality organizations through environmental consciousness and leadership expectations. Using a sequential exploratory mixed-method design, Study 1 conducted semi-structured...

Solar-driven photocatalytic air purification for road infrastructure: Pollutant dynamics, material integration, and sustainable engineering

Road infrastructure provides a scalable platform for integrating photocatalytic technologies to mitigate urban air pollution. However, practical deployment remains uncertain because pollutants in road environments show substantial diversity and dynamic variation in their emission...

Concentration-Dependent Interlaminar Fracture Toughening in Carbon, Glass, and Hybrid Fiber-Reinforced Polymer Laminates via MWCNT Interlayers

Fiber-reinforced polymer (FRP) laminates are prone to delamination because they lack continuous through-thickness reinforcement. Although multi-walled carbon nanotube (MWCNT) interlayers can improve interlaminar resistance, evidence has focused mainly on unidirectional carbon fib...

Coupled effects of fuel corrosion and photothermal aging on asphalt binder degradation for airport pavements

Airport pavements face combined threats from photothermal aging and aviation fuel spillage, yet their synergistic degradation mechanisms are not fully elucidated. This study evaluates asphalt binder performance under coupled damage, revealing a distinct two-stage degradation patt...

Forecasting Transportation CO2 Emissions in China: A Rolling-Origin Comparison of Econometric, Machine-Learning, and Deep-Learning Models

Transportation-related CO2 emissions remain an important challenge for sustainable mobility and the energy transition in rapidly developing economies. This study examines transportation-related CO2 emissions in China using annual data for 1990–2024 within a STIRPAT-informed forec...

Zircon U-Pb Geochronology and Mineral Chemistry of Xinhe Mafic Rocks: Petrological Constraints on Water Heterogeneity in the Emeishan Large Igneous Province

The debate of hydrous and anhydrous mafic magmatism in the Emeishan large igneous province (ELIP) requires more robust petrological and mineralogical evidence. This paper reports zircon U–Pb ages, clinopyroxene and hornblende major element compositions, whole-rock geochemical and...

Hierarchy-dependent shear resistance and load sharing in root system reinforced soil: Insights from 3D DEM simulations

This paper investigates the shear reinforcement mechanisms of hierarchical tree root systems using three-dimensional discrete element method (DEM) simulations. A hierarchical root model based on Bischofia javanica was developed, explicitly representing taproots, lateral roots, an...

Static-dynamic triggering mechanisms of rockburst in straight-walled arch roadways under different principal stress orientations and impact disturbances

This study investigates how principal-stress orientation affects impact disturbance triggered rockburst around straight-walled arch roadways. Coupled static-dynamic loading tests were conducted on specimens containing a straight-walled arch opening with orientation angles of 0°,...

Refining green space renewal for PM10 mitigation across heterogeneous built environments

Urban green space renewal is essential for improving air quality in rapidly urbanizing areas. Understanding the interactive effects of building-green space on PM 10 is key to developing effective mitigation strategies. This study compared the seasonal distribution patterns of PM...

Initiation mechanism of irrigation-induced retrogressive loess landslides on the South Jingyang Tableland, China

Abstract Repeated sliding disturbs the slope structure and degrades soil mechanical properties, promoting the progressive development of retrogressive loess landslides on the South Jingyang Plateau, China. These landslides progressively encroach upon the plateau surface and have...

Visitor-Centric Public Space Network Analysis: A Revised Node Efficiency Model for Spatial Intervention

Conventional spatial network analysis relies on topological metrics that neglect visitor behavioral dimensions, leading to systematic mismatches between structural centrality and actual spatial vitality. This study proposed a revised node efficiency model that incorporated three...

An association of Liquidambar (Altingiaceae) vegetative and reproductive structures from the Miocene of South China

Liquidambar is a classic example of the eastern Asian–eastern North American biogeographic disjunction, and its fossil record is critical for understanding the evolutionary history and taxonomy of Altingiaceae. In particular, associated vegetative and reproductive fossils provide...

Experimental analysis and evaluation of a new seismic isolation method for subway stations in the Loess Plateau with localized sand-interlayered strata

Abstract Post-earthquake statistics indicate that the existing seismic measures and evaluation methods for subway stations in the Loess Plateau with locally interbedded sand layers are inadequate. During earthquakes, the station roofs are prone to deformation or even failure, pos...

Widespread strengthening vegetation responses and lengthening drought-accumulation timescales across China over the past four decades

Drought is one of the most critical climatic disasters affecting the structure and functioning of terrestrial ecosystems. However, how vegetation response intensity and characteristic response timescales have evolved under long-term environmental change remains poorly understood....

Cordwood space-coiling metasurface and its frequency band control method for noise reduction

Following the principles of acoustics, designing building blocks with different functions and constructing acoustic metasurfaces through block splicing is of practical importance in engineering due to its advantages of quick installation, wide application, and reusability. In thi...