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Predicting effects of air staging application on existing coal-fired power steam boiler
(Applied Thermal Engineering, 2019)
The results of an extended research performed with the aim of investigating influence air staging application on processes occurred in boiler furnace have been presented in this paper. This subject was developed as a result ...
ZnO/ZnS (hetero)structures: ab initio investigations of polytypic behavior of mixed ZnO and ZnS compounds
(Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, 2018)
The range of feasible ZnO/ZnS polytypes has been explored, predicting alternative structural arrangements compared with previously suggested or observed structural forms of ZnO/ZnS compounds, including bulk crystal structures, ...
The Genomic Impact of European Colonization of the Americas
(Current Biology, 2019)
The complexity of the admixture dynamics that shaped American populations is unveiled by Ongaro et al., where genetic data for more than 12,000 individuals from the continents are investigated. This study evaluates the ...
Prediction model based on artificial neural network for pyrophyllite mechano-chemical activation as an integral step in production of cement binders
(Construction and Building Materials, 2020)
The optimal outputs of pyrophyllite mechano-chemical activation in an ultra-centrifugal mill performing under different technological conditions were determined by analytical modeling and verified via Artificial Neural ...
Magnetic memory effect in hollandite-type α-K MnO2 monocrystalline nanorods
(Journal of Alloys and Compounds, 2020)
Memory effect due to spin-glass state below about 20 K has been illustrated in the hollandite-type α-KxMnO2 monocrystalline nanorods by systematic magnetization measurements including temperature- and time-dependent ...
High harmonic generation and the billiards
(Chaos, Solitons and Fractals, 2019)
The problem of underlying classical dynamics chaotic and regular in quantum and classical billiards and their influence on high-order harmonic generation are investigated. The results concerning the Bunimovich stadium and ...
Photoluminescence of ZrO2:Gd3+ and ZrO2:Dy3+ coatings formed by the plasma electrolytic oxidation
(Journal of Alloys and Compounds, 2020)
Zirconia (ZrO2) coatings, doped with Gd3+ and Dy3+ in various concentrations, were created by the plasma electrolytic oxidation (PEO) process of zirconium by the addition of Gd2O3 and Dy2O3 particles to the supporting ...
Full-scale CFD investigation of gas-particle flow, interactions and combustion in tangentially fired pulverized coal furnace
(Energy, 2019)
Investigations suggest the need for better understanding of reactive gas-particle turbulent flow phenomena in full-scale energy systems. Numerical study was done in 350 MWe utility boiler tangentially fired furnace to ...
Microwave assisted hydrothermal synthesis of (Fe,Co) 3 O 4 nanoparticles in the presence of surfactants and effects of Co/Fe ratio on microstructure and magnetism
(Ceramics International, 2018)
Microstructure and magnetic properties of nanoparticles can be tailored by optimising the synthesis procedure and changing chemical composition. In this study, a two-step procedure, i.e., coprecipitation in the presence ...
Niobium and zinc doped titanium-tin-oxide solid-solution ceramics: Synthesis, structure and electrical characterization
(Ceramics International, 2018)
This paper describes the processing, microstructure, optical and electrical properties of the nanocrystalline (NC) niobium and zinc doped titanium-tin-oxide (TTO:NZ) based ceramics. Variety of techniques was employed (X-ray ...