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1881
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1882
Ecosystem services value for water provisioning in the Shule River Basin of northwestern China: Spatial and temporal evolution and drivers from 2000 to 2022
Published 2025-01-01“…Furthermore, elucidating the spatial and temporal evolution of ecosystem water-provisioning services in the Shule River Basin and understanding their driving mechanisms are important for local sustainable economic development. …”
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1883
Land deformation monitoring and spatiotemporal evolution characteristics analysis of coal mine goaf in Jilin Province based on time series InSAR
Published 2025-01-01Subjects: Get full text
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1884
Évolution morphologique et sédimentaire de la plaine alluviale d’un espace urbanisé (Tours, Indre-et-Loire, France)
Published 2013-12-01“…The combined results provide a new reading of the morphological evolution of the floodplain of Tours from the Weichselian to nowadays.…”
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1885
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1886
Effect of muti-scale thermoelectric magnetic convection on the mushy zone evolution of Al-10 wt%Zn alloy during thermal annealing
Published 2025-01-01“…Effect of a transverse static weak magnetic field (TSMF) on the evolution of the mushy zone of Al–Zn alloys during thermal annealing was investigated through three-dimensional (3D) X-ray tomography, scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS) analysis. …”
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1887
Research on the evolution and prediction of the heights of water-conducting fracture zones in overlying rocks during layered mining of extremely thick coal seams
Published 2024-12-01Subjects: “…overlying rock fracture evolution…”
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1888
Cartographies on COVID-19 and functional divisions of the territory: an analysis on the evolution of the pandemic based on Basic Health Areas (BHA) in Castile and Leon (Spain)
Published 2021-11-01“…This paper explores the usefulness of maps for the study of the evolution of the pandemic in Castile and Leon, one of the Spanish regions with the highest levels of infection and mortality. …”
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1889
Underground Karst Stratification in Covered Karst Areas Under Control of River Valley Evolution: A Case Study of Baishiyao Hydropower Station
Published 2023-01-01“…The underground karsts of the river valley in the covered karst area generally have the characteristics of vertical zoning with a strong upper part and a weak lower part.The causes of such vertical zoning are still unclear,which brings difficulties to practical engineering applications.Therefore,the multi-phase superimposed stratification model of river valley karsts is simplified to the three-phase superimposed strengthening model of underground karsts of the river valley.The simplification is conducted on the basis of finding out the characteristic karstification heads such as the maximum karstification head,the maximum strengthening head,and the latest strengthening head in the evolution process of the river valley from the canyon period to the basin period.The three-phase superimposed strengthening model is divided into the deep isolated cave layer,middle enhanced karst layer,and modern karst-influenced layer from bottom to top.Taking the Baishiyao Hydropower Station as an engineering example,this study analyzes the evolution of the river valley and the stratification of the underground karst profile.It is proposed that as the modern karst-influenced layer of the dam foundation is strongly developed,it is the key point of anti-seepage.The maximum anti-seepage depth of karsts should enter the middle enhanced karst layer to greatly lessen the anti-seepage treatment of karst leakage of the dam foundation and save engineering investment.Years of leakage observation suggest that the anti-seepage effect is good.The underground karst stratification in the covered karst area is of certain practical significance and can be used as a reference for the seepage prevention engineering of similar dam foundations.…”
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1890
Spatial and temporal evolution of tourism flows among 296 Chinese cities in the context of COVID-19: a study based on Baidu Index
Published 2025-01-01“…Accurately assessing the spatio-temporal evolution of tourism flow under the disturbance of COVID-19 is essential for scientific tourism planning and management. …”
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1891
The Spatio-temporal Evolution of NDVI in the Three Gorges Reservoir Area Driven by the Synergistic Effect of two Factors over the Past 21 Years
Published 2024-12-01“…[Objective] To clarify the spatio-temporal characteristics of vegetation evolution in the Three Gorges Reservoir Area, and to quantitatively analyze the relationships between vegetation and key determinants, including climate, terrain, and human activities. …”
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1892
Spatial-temporal evolution of habitat quality in tropical monsoon climate region based on “pattern–process–quality” – a case study of Cambodia
Published 2025-02-01“…Existing studies mainly analyze the spatial-temporal evolution of habitat quality from the perspective of “pattern quality” and land use data. …”
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1893
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1894
Prediction of BlastInduced Ground Vibration (BIGV) of Metro Construction Using Difference Evolution AlgorithmOptimized Gaussian Process (DE-GP)
Published 2021-01-01“…First, a nonlinear mapping relationship between input variables and output variable is established through the Gaussian process (GP). The differential evolution algorithm (DE) is used to optimize the hyperparameters σf, σn, and l of the GP, and a blasting PPV model based on the DE-GP is constructed. …”
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1895
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1896
De la mobilité à l’accessibilité : l’évolution des transports comme ressources dans la ville sud-africaine
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1897
Influence of stress ratio on residual stress evolution near cold-expanded hole due to low-cycle fatigue by crack compliance data
Published 2020-12-01“…Residual SIF values, obtained at different stage of low-cycle fatigue with the same stress range Δσ = 350 MPa but different stress R = –0.4 and R = –1.0, provide quantitative description of residual stress evolution near cold-expanded hole. It shown that maximal residual stress relaxation of order 20 per cent occurs at 95 lifetime per cent for both loading programs.…”
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1898
Bottom-Up Enhancement of g-C3N4 Photocatalytic H2 Evolution Utilising Disordering Intermolecular Interactions of Precursor
Published 2014-01-01“…The final sample possesses much looser structure and provides a broadening optical window for effective light harvesting and charge separation efficiency, which exhibits significantly improved H2 evolution by photocatalytic water splitting. The bottom-up mechanochemistry method opens new vistas towards the potential applications of weak interactions in the photocatalysis field and may also stimulate novel ideas completely different from traditional ones for the design and optimization of photocatalysts.…”
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1899
Evolution Mechanism of Thickly Sticky Loose Layered Arch Structure and Prediction Method of Initial Ground Fissure Caused by Underground Coal Mining
Published 2022-01-01“…The first theory deduced the dynamic evolution mechanism of TSLLA structure advancing. The dynamic evolution of TSLLA structure in 22207 coalface is simulated. …”
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1900