Mostrando 1,281 - 1,300 Resultados de 10,994 Para Buscar '"rock ', tiempo de consulta: 0.22s Limitar resultados
  1. 1281
    “…Meanwhile, the existence of hole defects promotes the generation and evolution of meso-cracks in coal and rock. For coal and rock with hole defects, the crack initiation stress and expansion stress are less than those of intact coal and rocks. …”
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  2. 1282
    “…To this end, this paper discusses the equivalent circuit of electric pulse rock breaking, the model of shock wave in electro channel plasma, and, particularly, the model of rock failure in order to disclose the rock failure process when exposed to high-voltage electropulse. …”
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  3. 1283
    “…Oxalic acid‐producing fungi play an important role in biogeochemical transformations of rocks and minerals and possess biotechnological potential for extraction of valuable elements from primary or waste ores and other solid matrices. …”
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  4. 1284
    “…While the linear regression model fails to accurately trace variations of rock properties, the intelligent models successfully detect brittle intervals consistent with field measurements.…”
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  5. 1285
    “…Research on the stress state of rock mass is essential for revealing the distribution characteristics and evolution law of the surrounding rock stress field in the roadway, studying the coal–rock dynamic disaster and the design of roadway support. …”
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  6. 1286
    “…The similarity simulation experiment and theoretical analysis were combined based on the classification of the occurrence characteristics of the key bearing layer in the overburden rock of shallow thick seam mining. This study investigated the fracture characteristics and the instability motion mode of the key bearing layer in shallow thick seam mining and their effects on the distribution of fissures in the overburden rock. …”
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  7. 1287
    “…Among the potential alternative materials that can be used in cement composite production is rock dust of different geological origin. However, some adversarial effects may be encountered when using rock dust regarding the properties and durability of mortars and concrete. …”
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  8. 1288
    “…Our objective in this study is to investigate the RhoA/Rho-associated kinase (ROCK)-1 signaling pathway and oxidative stress in CAD patients. …”
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  9. 1289
    “…In this work, uranium(vi) biomineralization by soluble ortho-phosphate from decomposition of the phosphate rock powder, a cheap and readily available material, was studied in detail. …”
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  10. 1290
    “…At the first stage, mechanochemical activation of raw materials was carried out. Siliceous rock, Na(2)CO(3) and additives (chlorides) were grinded together in a planetary ball mill. …”
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  11. 1291
    “…Rock drilling robots are able to greatly reduce labor intensity and improve efficiency and quality in tunnel construction. …”
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  12. 1292
    “…The execution of specific processing protocols endows Wuyi rock tea with distinctive qualities produced through signature metabolic processes. …”
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  13. 1293
    “…All three proposed sill pillar recovery schemes were feasible and safe to recover the sill pillars in this hard rock mine, and the scheme SBS was the optimum one among the three schemes.…”
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  14. 1294
    “…When a rock mass shears along a joint surface, the shear resistance is affected by joint surface undulations and friction between the contact regions. …”
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  15. 1295
  16. 1296
    “…Soft rock is a new material that could be used for the improvement of Mu Us Sandy Land, China. …”
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  17. 1297
    “…The width and degree of connectivity of coal-rock joints directly affect the seepage capacity of flow energy such as gas. …”
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  18. 1298
    “…Discoveries of heavy crude oil in the Neoproterozoic rocks (Infracambrian rock sequence) from the Bikaner-Nagaur Basin of India emphasize the significance of studying and exploring the Neoproterozoic source rock potential in the southeastern part of Pakistan. …”
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  19. 1299
    “…Rock wool (RW) nanostructures of various sizes and morphologies were prepared using a combination of ball-mill and hydrothermal techniques, followed by an annealing process. …”
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  20. 1300
    “…In this study, a temperature programmed oxidation-infrared (TPO-IR) technique was improved and applied in the analysis of sulfur occurrence and genesis in phosphate rock. Phosphate rocks from three regions (KYP, ZJP, and WAP) were selected for the detection of sulfur species by TPO-IR combined with XRD, SEM, EDS, and XPS characterization. …”
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