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2. Photoinduced doping in hexagonal boron nitride

Author

Perepeliuc, A., primary, Gujrati, R., additional, Srivastava, A., additional, Vuong, P., additional, Ottapilakkal, V., additional, Voss, P. L., additional, Sundaram, S., additional, Salvestrini, J. P., additional, and Ougazzaden, A., additional

Published
2023
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6. Family and household structure in Norway in the period of 2005−2016

Author

Perepeliuc, Maria, Kurtinová, Olga, and Ruml, Jiří

Subjects
rodina, domácnost, family, Norsko, household, standardized index of household heads, population development, populační vývoj, standardizovaný index hlav domácností, Norway
Abstract

Family and household structure in Norway in the period of 2005-2016 Abstract The main aim of the bachelor work is to describe the structure of families and households in Norway in the period 2005-2016 regard to the population development in Norway and data from the Norwegian Statistical Office related to families and households. The partial aim of the thesis is to compare the structure of families and households in Norway with selected European countries in 2001 and 2011 based on the values of the standardized index of household heads, calculated from the Demographic Yearbook's data. The analysis shows that the structure of families and households in Norway differs significantly from the structure of families and households in the countries of southern and eastern Europe. A more similar structure of families and households to the structure of Norway have some countries of central Europe, and the most similar is structure of countries in northern Europe. The propensity to found own household for Norwegian men and women is one of the highest among the surveyed countries, but the value of the standardized index of household heads for women in Norway related to the standard is higher than for men as in most of the analyzed states. The results of analysis suggest that there is an intensive spread of cohabitation...

Published
2017

8. Hydrogen Confinement in Hexagonal Boron Nitride Bubbles Using UV Laser Illumination.

Author

Tijent FZ, Bouzourâa MB, Ottapilakkal V, Perepeliuc A, Gujrati R, Vuong P, Sundaram S, Faqir M, Voss PL, Salvestrini JP, and Ougazzaden A

Abstract

Hexagonal boron nitride (h-BN) bubbles are of significant interest to micro-scale hydrogen storage thanks to their ability to confine hydrogen gas molecules. Previous reports of h-BN bubble creation from grown h-BN films require electron beams under vacuum, making integrating with other experimental setups for hydrogen production impractical. Therefore, in this study, the formation of h-BN bubbles is demonstrated in a 20 nm h-BN film grown on a sapphire substrate with a 213 nm UV laser beam. Using atomic force microscopy, it is shown that longer illumination time induces larger h-BN bubbles up to 20 µm with higher density. It is also demonstrated that h-BN bubbles do not collapse for more than 6 months after their creation. The internal pressure and gravimetric storage capacity of h-BN bubbles are reported. A maximum internal pressure of 41 MPa and a gravimetric storage capacity of 6% are obtained. These findings show that h-BN bubbles can be a promising system for long-term hydrogen storage., (© 2024 The Author(s). Small published by Wiley‐VCH GmbH.)

Published
2024
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