Selaus julkaisuajan mukaan kokoelmassa 116 Kemia
Viitteet 21-40 / 43
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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 ... -
Analys av växtsteroler med gaskromatografi och FT-NIR-spektroskopi
(2021)Målet med denna pro gradu-avhandling var att jämföra och evaluera fyra olika gaskromatografiska metoder för analys av växtsteroler. Det har presenterats flera metoder i litteraturen, men de flesta tillämpas på analys av ... -
Analysis of major ions, stable water isotopes and black carbon in the upper part of Belucha ice core, Siberian Altai
(2021)There are many different paleoarchives, e.g. sediments, ice cores, tree-rings, speleothems and corals. This master’s thesis focuses on the information receivable from ice cores. Well preserved information of past precipitation ... -
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. ... -
Synthesis of an Electroconductive Hydrogel in 3D Printing Formulation for Tissue Engineering
(2021)The progress made in tissue engineering to treat damage caused by disease and traumatic injury has been accelerated by innovations in bioengineering over the last few decades. The strategy of repairing and revitalizing ... -
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 ... -
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 -
Determination of benzoate in cranberry and lingonberry using solid-contact ion-selective electrode; comparison with ion chromatography
(2021)The purpose of this thesis was to develop the solid-contact ion-selective electrodes and to characterize them as benzoate-selective electrodes. The developed electrodes were then applied for the determination of benzoate ... -
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 ... -
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(2022)Salassapidettävä 1/7/2024 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 ... -
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 ... -
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 ... -
Development of electronic nose using chemiresistive percolation network gas sensor based on conducting polymers
(2023)A method of producing poly(3,4-ethylenedioxythiophene) (PEDOT) explosive percolation (EP) gas sensor with ultra-fast response and recovery time has been developed by Robiños et. al. Due to its novelty full understanding ... -
Analysis of the Presence of Styrene in paperboard
(2023)In this work, the presence of styrene in paperboard was studied. Styrene is used in the production of styrene-acrylate (SA) and styrene-butadiene (SB) latexes. SA- and SB-latexes are the most common binders used in the ... -
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 ... -
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. ... -
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 ... -
LC-MS-analys av omvandlingsprodukter av ibuprofen
(2024)Ett av de stora internationella miljöproblemen idag är att vattenförekomster kontinuerligt kontamineras med läkemedel. Detta är ett fenomen som härstammar bland annat från otillräcklig bearbetning av de läkemedelsrester ...
