2353 papers
This study combines CT imaging and numerical wavefield modelling to demonstrate that multiscale pore-fracture networks, rather than mineral inclusions, are the dominant factor controlling ultrasonic wave velocity attenuation, spectral broadening, and coda-wave complexity in tectonically deformed coal.
This study utilizes a physical similarity simulation to characterize the stage-dependent and depth-dependent coupling of thermal–oxygen evolution and atmospheric pollutant emissions during the vertical propagation of underground coal fires, revealing distinct temporal release patterns for different pollutants and identifying CO as the primary contributor to moderate-to-severe pollution.
An analysis of 763 rock samples from the Tumaco and San Juan-Atrato basins reveals that the organic matter, characterized by mixed Type II/III kerogen and early thermal maturity, possesses acceptable potential for generating gas and oil-gas mixtures derived from transitional marine-terrestrial depositional environments.
This paper utilizes SWOT and DEA analyses to identify both the strategic opportunities and critical weaknesses hindering the adaptation of Niger's healthcare system to climate change, ultimately proposing measures to enhance sector resilience and performance.
This study evaluates four spatially explicit models for groundwater potential mapping in Cheongju, South Korea, finding that while they achieve comparable predictive performance (AUC 0.850–0.875) with no statistically significant differences, their outputs are best interpreted as conditional rankings to guide reconnaissance and monitoring rather than as estimates of yield or drilling success.
Multi-isotope analysis of two distinct burial phases at Rua dos Lagares #74 in Lisbon reveals that the late 15th-century Jewish necropolis (Necropolis I) was characterized by a homogeneous, local population, whereas the early 16th-century multifaith necropolis (Necropolis II) exhibited extraordinary diversity in both diet and geographic origins, reflecting the influx of non-local individuals, including those of African descent, following Portugal's imperial expansion.
By applying laser-ablation strontium isotope analysis to 70 Battle Axe Culture skeletons, this study reveals that individuals in mid-3rd millennium Southern Scandinavia primarily engaged in short-distance local mobility rather than the long-range migration traditionally associated with Corded Ware groups, marking a gradual shift from local pastoralism to sedentary agriculture.
This study applied a BACI-style analysis to SWAT+ model outputs in Madagascar's Mandena mining basin, finding no statistically significant post-2008 hydrological shift attributable to mining despite demonstrated model sensitivity to parameter changes, thereby highlighting the need for finer-resolution monitoring data to detect such impacts.
In a high-energy, ice-influenced sandstone coast in Prince Edward Island, Canada, a one-year controlled comparison demonstrated that a biomass-based living shoreline failed to reduce bluff retreat compared to an unmanaged control, whereas hard armouring effectively stabilized the coast, highlighting that nature-based designs developed for sheltered estuaries may not be suitable for exposed, ice-affected open-coast environments without prior wave-energy screening.
This study establishes a spatially explicit, dynamic baseline framework for China's forest carbon projects by integrating plot-derived maximum biomass ceilings with age-dependent growth curves and management scenarios to accurately quantify counterfactual carbon stocks and ensure credible mitigation claims.