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We report the discovery of a partially altered microchondrule within a fine‐grained micrometeorite. This object is circular, <10 μm in diameter, and has a cryptocrystalline texture, internal zonation, and a thin S‐bearing rim. These features imply a period of post‐accretion parent body aqueous alteration, in which the former glassy igneous texture was subject to hydration and phyllosilicate formation...
Eyespot is one of the most important fungal diseases of the stem base of wheat (Triticum aestivum L.). The presented study clearly demonstrated that the Pch1 gene was the main effective source for reducing the eyespot disease score in the analyzed winter wheat lines. Nevertheless, Pch1 was present only in 8−9% of the investigated lines. Using an isoenzymatic marker and molecular markers, the presence...
MAR-M247 and Rene 77 belong to intermetallic phase Ni₃(Al, Ti) precipitation hardened nickel alloys widely used in the aerospace and power engineering industries. Because of their susceptibility to cracking, the above-named alloys are characterised by limited weldability. In the tests described in this article, the surfaces of the above-named superalloys were affected by a laser beam having identical...
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