Results 101 to 110 of about 1,987,304 (393)
High‐Entropy Magnetism of Murunskite
Advanced Functional Materials, EarlyView.The study of murunskite (K2FeCu3S4) reveals that its magnetic and orbital order emerges in a simple I4/mmm crystal structure with complete disorder in the transition metal positions. Mixed‐valence Fe ions randomly occupy 1/4 of the tetrahedral sites, with the remaining 3/4 being filled by non‐magnetic Cu+ ions.
Davor Tolj +18 more
wiley +1 more source
European Spatial Research and Policy, 2021 The EU Cohesion Policy was observed to be marked by financial compliance problems due to a relatively high level of irregularities. This problem brings into question the issue of how to prevent such infringements of the rules applicable to EU expenditure.
Julia Walczyk, Nicola Francesco Dotti
doaj +1 more source
Forecasting the Structure of Energy Production from Renewable Energy Sources and Biofuels in Poland
Energies, 2020 The world’s economic development depends on access to cheap energy sources. So far, energy has been obtained mainly from conventional sources like coal, gas and oil.
Jarosław Brodny, M. Tutak, S. A. Saki
semanticscholar +1 more source
Advanced Functional Materials, EarlyView.HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan +9 more
wiley +1 more source
Massless Dirac Fermions on a Space‐Time Lattice with a Topologically Protected Dirac Cone
Annalen der Physik, Volume 534, Issue 12, December 2022., 2022 Fermion doubling is a lattice artefact that appears if one discretizes the Dirac equation of massless electrons. One can work around this obstacle by replacing the linear dispersion by a sawtooth. Here it is shown that this method opens a gap at the Dirac point of the band structure.
A. Donís Vela +4 more
wiley +1 more source
High Thermoelectric Performance in Low‐Cost Cu8SiSxSe6‐x Argyrodite
Advanced Functional Materials, EarlyView.This study discovers the great potential of Cu8SiSxSe6‐x argyrodites as new, low‐cost, Te‐free thermoelectric materials. The proposed defect scheme suppresses the phase transition, enhances the weighted mobility and optimizes the grain boundary contacts.
Taras Parashchuk +7 more
wiley +1 more source
arXiv, 2010 Highlights of top quark physics presented at the 2009 Europhysics Conference on High Energy Physics from 16-22 July 2009 in Krakow, Poland, are reviewed.
arxiv
Polish Military Assistance to Its Ally, the Ukrainian People’s Republic, in 1920
Historia i Polityka, 2020 As part of a political agreement regulating Poland’s relations with the Ukrainian People’s Republic signed in Warsaw on April 21, 1920, the Polish side officially recognized the UPR’s government with Simon Petlura at its head and committed itself to help
Zbigniew Karpus
doaj +1 more source
Innovations in Agritourism: Evidence from a Region in Poland
Sustainability, 2020 The objective of the article is to present the study of agritourism innovativeness. The analysis covers agritourism farms in Poland. It is also essential to identify the factors affecting the process of implementing innovation in agritourism.
M. Roman, Monika Roman, P. Prus
semanticscholar +1 more source
Advanced Functional Materials, EarlyView.Ambient‐dried composite aerogels integrating MOF‐303, TEMPO‐oxidized cellulose nanofibers (TOCNF), and hygroscopic salts enable high‐performance atmospheric water harvesting (AWH), achieving competitive uptake at both low and high humidity. Enhanced with a solar‐evaporation layer, these scalable aerogels support self‐sustained plant growth in a ...
Ahmadreza Ghaffarkhah +12 more
wiley +1 more source