Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Aleksandr Zaloga"'
Autor:
Igor Yakimov, Aleksandr Zaloga, Petr Dubinin, Oksana Bezrukovа, Aleksandr Samoilo, Sergey Burakov, Eugene Semenkin, Maria Semenkina, Eugene Andruschenko
Publikováno v:
Crystals, Vol 8, Iss 11, p 402 (2018)
The technological inspection of the electrolyte composition in aluminum production is performed using calibration X-ray quantitative phase analysis (QPA). For this purpose, the use of QPA by the Rietveld method, which does not require the creation of
Externí odkaz:
https://doaj.org/article/f9aa88ab018b4b758f4317f7954fdb54
Publikováno v:
Journal of Applied Crystallography. 56:293-301
This article describes the crystallography package ParaCell, which integrates several indexing methods. All methods share the basic infrastructure of the program, which uses GPUs to evaluate the correctness of the unit cell. The individually implemen
Autor:
Igor V. Plokhikh, Anastasiya I. Zadoya, Oleg I. Siidra, Wulf Depmeier, Aleksandr Zaloga, Dmitri O. Charkin
Publikováno v:
Zeitschrift für Kristallographie - Crystalline Materials. 234:1-8
A family of Ln 2CrO6 (Ln=Pr, Nd, Sm–Tb) compounds has been re-investigated using powder X-ray diffraction and IR spectroscopy. The structure of β-Nd2CrO6≡β-[Nd2O2](CrO4) is similar to that of the slag compound [Ba2F2](S6+O3S2−) in that it exh
Autor:
Sergey V. Burakov, Igor S. Yakimov, Aleksandr Zaloga, P. S. Dubinin, Oksana E. Bezrukova, Konstantin A. Gusev, M. E. Semenkina
Publikováno v:
Industrial laboratory. Diagnostics of materials. 84:25-31
We developed a self configuring genetic algorithm to quantify phase concentrations in a crystalline sample from powder X-ray diffraction data. The algorithm does not require the fine-tuning of parameters, which is inherent to most evolutionary algori
Publikováno v:
Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques. 12:128-134
A method for the automatic determination of crystal structures using powder diffraction data by the multipopulation genetic algorithm is proposed. The advantage of using coevolution with exchange by better individuals over using evolution within a si
Publikováno v:
Solid State Sciences. 71:111-116
Two new Sillen–like layered lead fluoride nitrates, PbNaF2NO3 and Pb2OFNO3, have been prepared at 300 °C. PbNaF2NO3 is a structural analog of alkaline earth – bismuth oxyhalides, BaBiO2X and SrBiO2X (X = Cl – I), but not the corresponding nitr
Publikováno v:
IOP Conference Series: Materials Science and Engineering. 734:012102
The problem of determining inorganic crystal structures with a large number of atoms from powder diffraction data is a relevant research task. In order to solve this problem, we made an algorithm of multi-objective optimization based on the SPEA2 app
Publikováno v:
Crystal Research and Technology. 50:724-728
The approach for automated crystal structure solution from X-Ray powder diffraction data based on the multi-population parallel genetic algorithm (MPGA) combined with the Rietveld-like Derivative Difference Minimization method is described. It is pro
Publikováno v:
IOP Conference Series: Materials Science and Engineering. 537:022002
In this paper, we consider the problem of the study of polycrystalline substances: restoration of a substance atomic structure by full-profile analysis of powder diffraction data. This task is specific since it is not necessary to find very good solu
Publikováno v:
Inorganic Materials. 48:1285-1290
A method of quantitative X-ray phase analysis (QXPA) based on multiobjective evolutionary optimization for automatization and increase in accuracy of QXPA that is based on full-profile analysis by the Rietveld method is proposed. The two-level geneti