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Density functional study of hydrogen adsorption on Pt-Ni nanoclusters
(2018)
Diplomityö
Diplomityö
The development of affordable and earth-abundant electrocatalysts for the hydrogen evolution reaction (HER) has attracted great attention in recent years. The effective production of molecular hydrogen is of crucial ...
Ophthalmic Drug Development: Log Pow, Lipophilicity and Ion-pairing by HPLC
(2018)
Diplomityö
Diplomityö
Due to the ageing population, the rate of the eye diseases has increased globally. Thus, there is a great need to develop more effective ophthalmic drugs and dosing methods. Ocular diseases are often treated with eye-drops ...
Spectral Measurements of Second-Harmonic Generated Light
(2018)
Diplomityö
Diplomityö
Nonlinear light-matter interactions can lead to second-harmonic generation (SHG) or frequency doubling of light. Previously, we have measured SHG from nanoparticle arrays using just one incident wavelength. In order to ...
Studies on deoxygenation of decane-1,2-diol derivatives with pinacol-derived chlorohydrosilane
(2018)
Diplomityö
Diplomityö
In spite of the extensive studies, which have been carried out on the selective deoxygenation of secondary alcohols, it still poses a formidable challenge. The recent discovery of the reduction of salicylaldehydes with a ...
Technical performance assessment and quality control of ultrasound device monitors
(2018)
Diplomityö
Diplomityö
The purpose of this study was to investigate and evaluate the current technical performance of ultrasound imaging device displays in the Hospital District of South Ostrobothnia and in Pirkanmaa Hospital District. Ultrasound ...
Mixed Lattice Groups
(2018)
Diplomityö
Diplomityö
A mixed lattice group is a generalization of a lattice ordered group. The theory of mixed lattice semigroups dates back to the 1970s, but the corresponding theory for groups has been relatively unexplored. In this thesis ...
Nitrosamine Free Rubber Compounds – Replacing a Hazardous Thiuram Accelerator with Safe Alternatives
(2018)
Diplomityö
Diplomityö
Vulcanization is the process of cross-linking rubber to form a three-dimensional network giving rubber its characteristic properties. The most common form of vulcanization is sulfur vulcanization, where sulfur atoms form ...
Quantitative Comparison of Glass and Plastic Optical Components in Mass-Produced Imaging Applications
(2018)
Diplomityö
Diplomityö
Plastics have, in imaging applications, mostly replaced glass as the most common optical material. However, as there is a constant demand for better and better cameras, manufacturers are starting to hit limits of optical ...
Secondary Organic Aerosol Formation From Polycyclic Aromatic Precursors
(2018)
Diplomityö
Diplomityö
Polycyclic aromatic hydrocarbons (PAHs) are organic compounds that are emitted into the atmosphere mainly through incomplete combustion of fossil fuels and biomass. The lifecycle of PAHs especially in urban atmosphere is ...
Decision tree learning with hierarchical features
(2018)
Diplomityö
Diplomityö
The performance of machine learning methods depends on the data they are given. Real life data sets can be incomplete and consist of various types of data. However, many methods are capable of handling only nominal and ...