Zobrazeno 1 - 10
of 74
pro vyhledávání: '"Andrzej Kruk"'
Autor:
Katarzyna Szczepko-Morawiec, Bogdan Wiśniowski, Ewelina Motyka, Waldemar Celary, Andrzej Kruk
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-18 (2024)
Abstract The mining bee (Andrena spp.) play a key role in ensuring plant and animal diversity. The present study examines their diversity in a post-agricultural landscape exemplified by the Kampinos National Park (KNP), a UNESCO Biosphere Reserve in
Externí odkaz:
https://doaj.org/article/ad9c33ffb2674a6d8e6dc6c09f3c324a
Autor:
Grzegorz J. Wolski, Zbigniew Sobisz, Józef Mitka, Andrzej Kruk, Ilona Jukonienė, Agnieszka Popiela
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-14 (2024)
Abstract Empetro nigri-Pinetum is a unique sea coast plant community developing along the Baltic Sea from Germany to Lithuania. Our detailed field research of bryophytes and vascular plants has highlighted the regional diversity of the Empetro nigri-
Externí odkaz:
https://doaj.org/article/0fda4452c8f248409426217c03876afc
Autor:
Olga Antczak-Orlewska, Daniel Okupny, Andrzej Kruk, Richard Ian Bailey, Mateusz Płóciennik, Jerzy Sikora, Marek Krąpiec, Piotr Kittel
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-17 (2022)
Abstract Moats and other historical water features had great importance for past societies. The functioning of these ecosystems can now only be retrieved through palaeoecological studies. Here we aimed to reconstruct the history of a stronghold’s m
Externí odkaz:
https://doaj.org/article/2ac92e3f5f2e4082812eef88491afce5
Autor:
Dominika Madej, Andrzej Kruk
Publikováno v:
Molecules, Vol 28, Iss 23, p 7799 (2023)
In this work, solid-state reaction sintering was used to fabricate Ca7ZrAl6O18-Ca3Al2O6-CaZrO3:Eu3+ ternary composite ceramics and cements. The structural, microstructural, and spectroscopic properties of the ceramics with different Eu2O3 content wer
Externí odkaz:
https://doaj.org/article/b7b58d16501744a09b0f2e8af1fb273d
Autor:
Jan Suchanicz, Dorota Sitko, Krzysztof Stanuch, Konrad Świerczek, Grzegorz Jagło, Andrzej Kruk, Kamila Kluczewska-Chmielarz, Krzysztof Konieczny, Piotr Czaja, Jakub Aleksandrowicz, Wojciech Wieczorek, Justyna Grygierek, Mariusz Sokolowski, Grzegorz Stachowski, Maija Antonova, Andris Sternberg
Publikováno v:
Materials, Vol 16, Iss 18, p 6316 (2023)
Lead-free Ba1−xSrxTiO3 (BST) (x = 0, 0.1, 0.2, 0.3, 0.4 and 0.45) ceramics were successfully prepared via the solid-state reaction route. A pure perovskite crystalline structure was identified for all compositions by X-ray diffraction analysis. The
Externí odkaz:
https://doaj.org/article/66f60e95e0cd492cb4214b6badb0abd7
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
Abstract The knowledge of biotic and abiotic drivers that put non-native invasive fishes at a disadvantage to native ones is necessary for suppressing invasions, but the knowledge is scarce, particularly when abiotic changes are fast. In this study,
Externí odkaz:
https://doaj.org/article/689009b51fab43e08191b4acd48b67e9
Autor:
Andrzej Kruk, Krzysztof Ziewiec
Publikováno v:
Micromachines, Vol 13, Iss 12, p 2254 (2022)
In this paper, physicochemical properties of pure Y2O3 and samarium (Sm)-doped Y2O3 transparent ceramics obtained via arc plasma melting are presented. Yttria powder with a selected molar fraction of Sm was first synthesized by a solid-state reaction
Externí odkaz:
https://doaj.org/article/2d63b4756f7d41e88401244cf75c461a
Publikováno v:
Molecules, Vol 26, Iss 11, p 3263 (2021)
A series of silicate–phosphate glass materials from the SiO2-P2O5-K2O-MgO system (pure and doped with sulfur ions) were synthesized by melting raw material mixtures that contained activated carbon as a reducer. The bulk composition of glass was con
Externí odkaz:
https://doaj.org/article/e844e8aeb648433890ebf1a37f93ae6d
Autor:
Andrzej Kruk
Publikováno v:
Materials, Vol 13, Iss 21, p 4928 (2020)
In this study, pure Y2O3, La0.1Y1.9O3 and La0.1Nd0.12Y1.78O3 nanosized powders were successfully synthesized by a modified sol–gel method. Pure and rare-earth ions doped yttria powders were characterized by X-ray diffraction, scanning electron micr
Externí odkaz:
https://doaj.org/article/99eb1053d16744c3899cd6e08e269cb0
Autor:
Adam M. Wojciechowski, Paulina Nakonieczna, Mariusz Mrózek, Krystian Sycz, Andrzej Kruk, Mateusz Ficek, Maciej Głowacki, Robert Bogdanowicz, Wojciech Gawlik
Publikováno v:
Materials, Vol 12, Iss 18, p 2951 (2019)
Nitrogen-vacancy color centers in diamond are a very promising medium for many sensing applications such as magnetometry and thermometry. In this work, we study nanodiamonds deposited from a suspension onto glass substrates. Fluorescence and opticall
Externí odkaz:
https://doaj.org/article/ca4c91110a954e139e863cfa79d82f4c