Abstract To shed light on the mechanism of formation nanophase iron particles (npFe) in space‐weathered materials from airless bodies, we analyzed exsolved and unexsolved lunar pyroxenes Apollo 17 sample 71501. The pyroxene allowed for observation effects space weathering similar mineral phases with variable composition. Using coordinated scanning transmission electron microscopy energy‐dispers...

Heat treatments of single crystals Ni44Fe19Ga27Co10 (at.%) shape memory alloys cause various microstructures the high-temperature phase. The nanodomain structure, consisting regions L21- and B2-phases, nanosized particles are main parameters that change during heat determine mechanism nucleation growth martensite crystals, size thermal-induced lamellae, temperature Ms, intervals martensitic tra...

Cystolepiota Singer is rarely studied in Southeast Asia; here, we survey and describe three new species of from tropical Laos Thailand. pyramidalis related to C. fumosifolia (Murrill) Vellinga pseudofumosifolia M.L. Xu & R.L. Zhao, but it distinguished by pale pastel yellow lamellae. Second, thailandica differs other members the genus greyish-orange granulose or powdery pileus stipe coverin...

Hot deformation and softening response for the titanium aluminide Ti–48Al–2V–0.2B has been investigated. The to mechanisms examined. Deformation experiments were carried out in strain rate range 0.01–10 s?1 keeping temperature constant at 1200 °C 1000–1200 1 s?1. With an increase rate, microstructural changes associated with mechanism include breaking of lamellae, spheroidization broken laths d...

Manganese is involved in the photosynthetic reactions of algae and leaves of higher plants (1-3). In tomato, manganese deficiency results in chloroplasts with a greatly reduced Hill reaction activity per unit chlorophyll (3). In spinach, manganese deficiency causes a 50 to 70 per cent reduction in the FMN-mediated photophosphorylation of isolated chloroplasts but only slightly affects the phosp...