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clearly indicate that almost all of the Q W and

clearly indicate that almost all of the Q W and

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The experimental simulation of a micro-scale frost weathering of sand-sized quartz grains has been conducted to investigate the frost-induced changes in the grain-size distributions and factors that affect the weathering process. The simulation involved two types of vein quartz crushed to fresh, angular grains of 0.5–1.0 mm fraction and arranged in...

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Context 1
... applied procedures from R 273 packages: cluster, factorextra, and NbClust to identification and visualisation of clusters. The results of the Kolmogorov-Smirnov test (Table 5) show the comparison of the grain-size weathering process. ...
Context 2
... increase in the amount of the very coarse-grained sand 448 may be explained by the fact that their destruction has followed the surface of quartz crystals An experimental design set up on 50, 100, and 300 FT cycles provides information on the 472 course and intensity of the frost weathering of quartz grains, and their changes. The results of 473 the Kolmogorov-Smirnov test ( Fig. 4; differ from the reference samples ( Fig. 4; Table 5). The obtained data show a general decrease weathering is relatively high during its initial phase (here during the first 100 FT cycles) and 497 is expressed by the production of the very coarse-and coarse-grained sand fractions. ...

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