ChemInform Abstract: Nanocrystalline Fe—P—Si Alloys.

Abstract

The formation of nanocrystalline structures is observed by heating amorphous melts of Fe-P-Si systems. The nanocrystal formation is accompanied by a 2-3-fold increase of the microhardness compared to the starting amorphous state. Amorphous melts containing minimal amounts of phosphorus and silicon but highest amounts of phases based on α-Fe show the greatest propensity to hardening. X-ray and microscopic studies indicate a three-stage crystallization process to the nanocrystal structures. -(VAVILOVA, V. V.; PALII, N. A.; KOVNERISTYI, YU. K.; TIMOFEEV, V. N.; Neorg. Mater. 36 (2000) 8, 945-949; Inst. metall. im.

Searching for (data on) Cracow astroplates

“…The original survey formed a collection of photographic plates taken with the 1.25 m Palomar Schmidt telescope, centered around = 11 h 20 m and = +35 • 26 ′ (2000.0). The central part of the JF was originally scanned by the COSMOS machine (Vavilova & Flin 1997). In 2017, a mysterious chest was found in the Astronomical Observatory of the Jagiellonian University.…”

“…The use of the plates in modern cosmology is also very promising. In particular, we will attempt to repeat the previous galaxy counts for the Jagiellonian Field missing plates (if rediscovered), or for the existing Jagiellonian Field archival scans (Vavilova & Flin 1997) (if irretrievably lost), using more modern algorithms. These results will be used to compare the mechanisms of galaxy grouping with other large-scale structures of the Universe, including radio quasars or the dark matter field (Gregul et al 1991).…”