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Memristor devices based on low-bandwidth manganites
(Turun yliopisto, 2022-12-12)
This dissertation investigates the phenomenon of resistive switching (RS) in lowbandwidth mixed-valence perovskite manganite oxides. In particular, the compounds Pr0.6Ca0.4MnO3 and Gd1−xCaxMnO3 with x between 0 and 1 are ...
On Problems of optimal timing under regime switching and poisson constraints
(Turun yliopisto, 2024-11-29)
The focus of this thesis is in analyzing optimal stopping (OSP) and impulse control problems (ICP) of linear diffusions under regime switching and Poisson constraints. Regime switching means that the problem’s parameters ...
Organomercury oligonucleotides as artificial ribonucleases
(Turun yliopisto, 2024-05-10)
Antisense oligonucleotides (ASOs) leverage the natural catalytic activity of RNases H to target specific RNA sequences for degradation. However, the challenge lies in incorporating chemical modifications into ASOs to enhance ...
Tuning Photochromic Sodalites across the Visible Spectrum
(Turun yliopisto, 2023-06-16)
Photochromic sodalite, Na8(AlSiO4)6(Cl,S)2, has been a topic of research for almost 100 years, though only recently has a deep understanding of its remarkably fatigueresistant colour change been obtained. Aside from the ...
Geochemistry of felsic, mafic and ultramafic rocks in the suprasubduction zone Mawat ophiolite, Northeast Iraq
(Turun yliopisto, 2021-11-19)
The Mawat ophiolite is a remnant from the Neotethyan oceanic lithosphere exposed within the Zagros Suture Zone, northeastern Iraq. This thesis focuses on the evolution of the mantlederived magma and their temporally and ...
Observational studies of accreting X-ray pulsars in a broad energy range
(Turun yliopisto, 2022-11-04)
Among all interesting astrophysical objects in the universe, only a few are capable of improving our understanding of physics under extreme conditions. Accreting neutronstars are one of these objects. These compact objects ...
Problems in Analytic and Algebraic Number Theory
(Turun yliopisto, 2023-06-16)
In this thesis we study questions on the distribution of primes and multiplicative orders modulo prime numbers. The problems are attacked using methods from analytic and algebraic number theory.
In the first article, ...
Understanding university students’ affect in interactions with quantum physics
(Turun yliopisto, 2025-03-08)
The second generation of quantum applications, like quantum computers and sensors, have emerged, and quantum physics has found its way to social media, films, news and TV. Educating the general public and the future quantum ...
High-precision polarimetric, broad-band spectroscopic and temporal studies of black hole X-ray binaries
(Turun yliopisto, 2021-10-08)
Black holes are among the most unusual objects in the Universe. Powered through accretion, they are strong sources of radiation in a broad energy range, from radio to hard X-rays. Stellar-mass black holes manifest themselves ...
Human Pressures and Impacts on Shallow Seafloor Environments of the Northern Baltic Sea
(Turun yliopisto, 2022-05-06)
ABSTRACT
Unsustainable use of coastal resources and space has resulted in global degradation of marine environments. Stopping adverse development requires improved understanding of how different human activities affect ...