Suggested Topics within your search.
Suggested Topics within your search.
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2221
Research on temperature effect and application of strength evolution of spray layer of wet spraying support of roadway
Published 2025-06-01“…The safety of geotechnical engineering in the cold zone environment is highly dependent on the stability of the supporting structure. Wet-sprayed concrete has been gradually applied to the support of roadways with broken peripheral rocks because of its advantages of low rebound and the high strength of the sprayed layer. …”
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2222
Formation conditions and evolution of the oil and gas strata of the prospective East Siberian oil and gas province
Published 2022-08-01“…A detailed mapping of its interior structure should be carried out.…”
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2223
Analysis of a self-supporting shell concrete roof with nonlinear coupled evolutive material parameters.
Published 2025-01-01“…However, in some cases, the evolution of these structures is impacted by delay effects (creep, shrinkage, etc.) and hydration, which sometimes also create structural damage. …”
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2224
Genomic evolution of porcine reproductive and respiratory syndrome virus (PRRSV) isolates revealed by deep sequencing.
Published 2014-01-01“…Most studies on PRRSV evolution have been limited to a particular region of the viral genome. …”
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2225
Characterization of coal reservoir permeability evolution under thermo-mechanical coupling based on fractal theory
Published 2025-07-01“…In conjunction with fractal theory, the association between the absolute permeability and the fractal dimension of coal reservoirs was examined, as well as the dynamic evolution features of the fractal dimension of the pore structure of coal reservoirs under thermal coupling settings. …”
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2226
Complexity of Functional Urban Spaces Evolution in Different Aspects: Based on Urban Land Use Conversion
Published 2020-01-01“…The evolution of urban spatial structure and urban land use is a topical issue in urban studies. …”
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2227
Layered high-entropy sulfides: boosting electrocatalytic performance for hydrogen evolution reaction by cocktail effects
Published 2024-01-01“…This study explores high-entropy sulfides (HESs) as potential electrocatalysts for the hydrogen evolution reaction (HER). Novel Pa -3 and Pnma structured HESs containing Fe, Mn, Ni, Co and Mo, were synthesized via a facile mechanochemical method. …”
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2228
The evolution of court within viceregal households in the Americas (1665-1746): the decline of a domestic economy
Published 2024-08-01“… This article analyses the evolution and development of royal households in the governmental structure of Spanish America between 1665 and 1746. …”
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2229
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2230
Evolution of the PE_PGRS Proteins of Mycobacteria: Are All Equal or Are Some More Equal than Others?
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2231
Study on Evolution Law and the Mechanical Mechanism of Strong Mine Tremors in a Deep Coal Mine
Published 2022-01-01“…This paper takes panel 63/06 in No. 6 mining area of Dongtan coal mine as the research background, through geological survey, laboratory test, theoretical analysis, numerical simulation, on-site microseismic monitoring, the seismic evolution law and its mechanical mechanism, etc., and the conclusions are as follows: (1) there are three sets of key layer groups between the surface of the panel 63/06 and the coal seam, among which there is a large amount of energy in the thick Jurassic red layer and the lower key layer, which provides an energy basis for the red-bed to break and generate strong mine tremors; (2) on the plane, most of the strong tremors occurred in front of the mining position of the working face and tended to transfer to the side of the gob, and longitudinal, high-energy mine tremors are mainly distributed in high-level red sandstone; (3) the release location of high-energy mining earthquakes does not match the location of microseismic accumulation, indicating that there is no elastic energy accumulation in the lower surrounding rock before the strong mining earthquake occurs, and it highlights the characteristics of structural occlusal instability rather than energy abrupt instability in the rupture of the red and thick sandstone; and (4) the Dongtan red-bed type strong mine tremors have a large focal rupture radius, a long rupture duration, a small corner frequency, and a weak initial P wave, and the characteristics of low stress drop and no catastrophic nature indicate that the thick and low-strength red-bed is prone to large-scale fractures, which should belong to the structural instability type mine shock dominated by tensile fracture.…”
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2232
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2233
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2234
Temporal-Spatial Evolution Characteristics and Dynamic Mechanisms of Regional Cooperation Network in the Yangtze River Delta
Published 2024-12-01“…The evolution and dynamics of regional cooperation are hot topics of concern for economic geographers. …”
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2235
Dynamic compression energy evolution and deformation and failure characteristics of limestone under dry-wet cycles
Published 2025-07-01“…The results indicate that as the number of dry-wet cycles increases, the internal colloid dissolution and particle damage of limestone samples deteriorate their structural framework's load-bearing capacity, leading to a gradual decrease in longitudinal wave velocity, compressive strength, and elastic modulus, along with an increase in porosity. …”
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2236
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2237
A Study on the Evolution Game of Multi-Subject Knowledge Sharing Behavior in Open Innovation Ecosystems
Published 2025-06-01“…Accordingly, it is suggested to optimize the competition structure among enterprises through the dynamic benefit distribution mechanism, knowledge sharing platform construction and classification subsidy policy, promote the evolution of the innovation ecosystem to a balanced state of mutual benefit and symbiosis, and provide theoretical basis and practical inspiration for the governance of the open innovation ecosystem.…”
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2238
Morphology-Engineered NiMo Alloy on Nickel Foam for Enhanced Hydrogen Evolution Reaction Performance
Published 2025-05-01“…SEM and XPS analyses confirm that the formed NiMoO<sub>4</sub> nanorods are uniformly distributed, which leads to significant optimization of their electronic structure. The electrochemical measurements revealed that the sample exhibited excellent hydrogen evolution reaction (HER) performance, with an overpotential as low as 127 mV at 100 mA cm<sup>−2</sup> and a Tafel slope of 124 mV dec<sup>−1</sup>. …”
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2239
The Evolution of the Labour Markets from the European Union Member States in the Context of the COVID-19 Pandemic
Published 2021-12-01“…In this direction, the evolution of three main indicators is analyzed, such as the employment rate, the unemployment rate and the number of hours actually worked, based on the data provided by Eurostat and Statista. …”
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2240