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Effekten av jonkoncentrationen på den kemiska beständigheten på bioaktivt glas i ett kaskadreaktorsystem under kontinuerlig genomströmning
(Åbo Akademi, 2018)Embargo 8.12.2019 asti -
Electrochemical reduction and simultaneous N-doping of nanographene oxide in acetonitrile for DNA-selective biosensors
(Åbo Akademi, 2019)Graphene and its derivatives have been a focus of research for a number of years due to their enhanced surface area and electrical conductivity making them a viable candidate for electrochemical sensing. Previously, the ... -
Elektrospinning av sol-gel-baserat bioaktivt glas och polymeren polylaktid
(2022)Glas med vissa sammansättningar kan binda sig kemiskt med levande vävnader i människokroppen. Dessa glas kallas för bioaktiva glas. Detta fenomen om direkt bindning mellan dessa två materialtyper upptäcktes av professor ... -
Evaluation of Calculative Tools Intended for the Prediction of Liquid Hydrocarbon Viscosity
(Åbo Akademi, 2020)The main purpose of this work was to comprehend and promulgate the process of predicting the kinematic viscosity of liquid hydrocarbon mixtures using empirical correlations and mixing rules. The performance of the most ... -
Exfoliering av grafit i cellulosa nanokristaller (CNC) och framställning av elektriskt ledande grafen-CNC-kompositfilmer
(2021)I denna pro gradu-avhandling har grafen-nanocellulosa(CNC)-kompositmaterial tillverkats av högkoncentrerade grafen-CNC-dispersioner genom sprejning med airbrushpenna på glassubstrat. Metoden som använts för att framställa ... -
Flow-Through Cell for Ion-selective Electrodes
(2023)This research work describes a novel flow-through all-solid-state potentiometric device that consists of solid-contact ion-selective electrodes and a solid-state planar reference electrode. The device is capable of measuring ... -
Functionality of solid-contact ISEs with physically damaged ion-selective membranes : a comparison between potentiometric, coulometric and amperometric methods
(2021)In this thesis, a novel ion-to-electron signal transduction method was applied for checking the functionality of chloride and potassium solid-contact ISEs with physically damaged ion-selective membranes (ISMs). The ... -
GC-MS/SIM and HPLC method development for monitoring polydimethylsiloxane and its degradation products
(2022)Polydimethylsiloxane (PDMS) is an abundant and highly persistent polymer used in many applications. One of these applications is as an antifoaming agent in the kraft pulping process. This chemical pulping process generates ... -
Graphene-Cellulose Nanocrystals Composite as Electrode Material for Electrochemical Double-Layer Capacitors
(2023)It has been a constant challenge to develop more sustainable and better-performing supercapacitors that meet the large-scale demands of hybrid electric vehicles, wearable microelectronics, and grid storage in the future. ... -
Interaktioner mellan kaliumsalter och manganbaserade bäddmaterial i kemisk cirkulärförbränning i reducerande förhållanden
(Åbo Akademi, 2019)I detta arbete studerades interaktionen av fyra olika kaliumsalter, KCl, K2CO3, K2SO4 och KH2PO4 med tre olika mangankällor, Hausmannit, Kalcium-mangan perovskit och en manganrik malm från Sibelco A/S, under reducerande ... -
Karakterisering av polymerytor och deras tillämpning inom mikrobiologi
(Åbo Akademi, 2020)Bakteriecellers adhesion och tillväxt på olika ytor kan ge upphov till en mängd olika problem. För att det ska vara lättare att bekämpa bakterieadhesionen är det viktigt att faktorer som påverkar adhesionen är kända. Det ... -
Leaching of Phosphorus from Biomass Ash and Model Chemicals
(2024)Phosphorus is an important raw material used mainly in fertilizers, with population growth increasing the demand. Sustainable sources of phosphorus are investigated to prevent the depletion of phosphorus reservoirs. While ... -
Method development for the analysis of polydimethylsiloxane in bio-oils
(2021)The chemistry of wood is quite complex. Wood consists of several components, such as cellulose, hemicelluloses, lignin, and extractives, which are all important during pulping. The components are either used as the final ... -
Novel design of a flow-through potentiometric sensing device
(2021)An innovative design of planar electrodes for flow-through potentiometric sensing devices is presented in this thesis. A planar and concentric potassium solid-contact ion-selective electrode (K+-SCISE) has been designed. ... -
Optimized automation system for compact engine powerplants
(Åbo Akademi, 2019)A common method used to monitor and control a complete process in today’s industry is to use a Supervisory Control and Data Acquisition (SCADA) configuration. SCADA consists of server racks in server cabinets. In a centralized ... -
Polymer and electrocatalytic membranes for improved selectivity of glucose biosensor
(2021)In the last decades research in the sphere of biosensors concentrates on the invention of wearable devices that would give an opportunity to patients to perform necessary analysis in vivo painlessly, easily, and effectively. ...Salassapidettävä 1.7.2025 asti -
Preparation and characterization of a gold nanoparticle/graphene composite for the electrocatalytic oxidation of glucose
(2022)Over the past few years there has been a shift towards sustainably producing chemicals. The valorization of biomass into value-added chemicals has been thoroughly investigated as a means of production for several carbon ... -
Redskapen i experimentellt arbete : Utredning av skollaboratoriets utrustning ur kemilärarens synvinkel
(Åbo Akademi, 2020)Kemiundervisningen rör sig mellan olika nivåer av kemisk kunskap. Fenomen på submikronivån beskrivs med modeller som är en viktig del av kemin. Inlärningen av kemin stöds med hjälp av uppgifterna som utvecklar elevens ... -
Solid-contact ion-selective electrodes with high sensitivity : comparison of potentiometric and coulometric signal transduction
(Åbo Akademi, 2019)In this research work, the novel coulometric signal transduction method, recently developed for improving the precision of ion sensing, was further investigated. Potassium-, hydrogen-, and chloride- solid-contact ion-selective ...