Blar i Fakultet for naturvitenskap (NV) på tittel
Viser treff 5372-5391 av 12479
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Hydrophobic Catalyst Support Surfaces by Silylation of γ-Alumina for Co/Re Fischer-Tropsch Synthesis
(Journal article; Peer reviewed, 2018)Eight different silanes with chloro or methoxy active ligands have been examined to modify the surface of a standard γ-alumina support to investigate the effect of surface acidity and hydrophobicity in Fischer-Tropsch ... -
Hydrophobic Coatings for Anti-Icing Applications
(Master thesis, 2014)The motivation for developing environmentally friendly and inexpensive solutions for anti-icing is high. The oil industry is heading toward arctic regions and the development of improved anti-icing techniques demands greater ... -
Hydrophobic Coatings for Anti-Icing Applications
(Master thesis, 2014)The background for this Master s Thesis is to investigate materials and coatings for use in anti-icing applications. Icing is a problem in many different fields, from aeronautic transport, power lines, and wind turbines ... -
Hydrophobic Coatings for Corrosion Inhibition in Closed Heating Systems
(Bachelor thesis, 2023)Evnen filmdannede aminer har til å beskytte karbonstål, kobber og aluminium fra korrosjon ble undersøkt gjennom å måle kontaktvinkler, hvor målet var å sjekke hydrofobisiteten. De tre filmdannende aminene som ble brukt var ... -
Hydrophobisation of lignocellulosic materials part I: physical modification
(Peer reviewed; Journal article, 2022)This review is the first part of a comprehensive review of hydrophobisation of lignocellulosic materials. The purpose of this review has been to compare physical hydrophobisation methods of lignocellulosic materials. We ... -
Hydrophobization of lignocellulosic materials part II: chemical modification.
(Peer reviewed; Journal article, 2022)Lignocellulosic materials with hydrophobic properties are of great interest for developing sustainable products that can be used in various applications such as packaging, water-repellent and self-cleaning materials, oil ... -
Hydrophobization of lignocellulosic materials part III: modification with polymers
(Journal article; Peer reviewed, 2022) -
Hydrotalcite Based Ni-Co Bi-metallic Catalysts for Steam Reforming of Methane
(Master thesis, 2016)Hydrotalcites or layered-double-hydroxides (LDH) are a class of nanostructured anionic clays. These compounds exhibit high surface areas, high thermal stability and uniform distribution of active metals. Different attempts ... -
Hydrothermal carbonization of olive wastes to produce renewable, binder-free pellets for use as metallurgical reducing agents
(Journal article, 2020)Torrefaction or hydrothermal carbonization processes were compared for conversion of olive pulp into metallurgical reducing agent. The dependence of yield, CO2 reactivity, and mechanical properties to reaction time and ... -
Hydrothermal syntheis and characterization of BaTiO3 nanoparticles
(Master thesis, 2018)This thesis investigates the size dependent dipole disorder in ferroelectric materials, which leads to a loss of macroscopic ferroelectricity, and the role of the depolarization field on this disorder. Structural ... -
Hydrothermal Synthesis of Alkali Niobates
(Master thesis, 2021)Reaksjonsforholdene under hydrotermal syntese av kalium- og natriumniobater har blitt undersøkt med hensikt å forstå effekten av reaksjonsforholdene på kinetikken, faseformasjonen, morfologien og gitteparametrene. Kalium ... -
Hydrothermal synthesis of hexagonal YMnO3 and YbMnO3 below 250 °C
(Peer reviewed; Journal article, 2021)The hydrothermal synthesis of hexagonal YMnO3 and YbMnO3 are reported using high KOH mineraliser concentrations (>10 M) and low temperatures (<240 °C). The relation between reaction parameters and resulting phase purity ... -
Hydrothermal Synthesis of LaFeO3
(Master thesis, 2011)This work explores the hydrothermal synthesis of LaFeO3 (LFO) nanorods with a high aspect ratio. Synthesis of rod shaped LFO is a stepping stone to the synthesis of strontium doped LFO (LSF) nanorods with high aspect ratio. ... -
Hydrothermal synthesis of materials for intermediate band solar cells
(Master thesis, 2013)Solar energy is an abundant energy source that may provide an environmentallyfriendly alternative to fossil fuels. The utilization of the solar energy have so farbeen limited by various energy losses in the photovoltaic ... -
Hydrothermal synthesis of SrxBa1–xNb2O6 on nanostructured substrates
(Master thesis, 2019)I nyere tid har syntese av bly-frie ferroelektriske materialer tiltrukket seg stadig mer oppmerksomhet og et av de studerte materialene er strontium barium niobat (SBN). SBN har vist gode elektro-optiske egenskaper, samt ... -
Hydrotreating of Bio-Oils over Metal-Phosphide Catalysts
(Master thesis, 2012)A concern over the impact of fossil fuels on the environment has made the researchers to look for more environmental options. One alternative is bio-oils produced from lignocellulosic material. However, the abundance of ... -
Hydroxyl airglow observations for investigating atmospheric dynamics: Results and challenges
(Peer reviewed; Journal article, 2023)Measurements of hydroxyl (OH*) airglow intensity are a straightforward and cost-efficient method which allows the derivation of information about the climate and dynamics of the upper mesosphere/lower thermosphere (UMLT) ... -
Hydroxyl Functionalized Pyridinium Ionic Liquids: Experimental and Theoretical Study on Physicochemical and Electrochemical Properties
(Journal article; Peer reviewed, 2019)Structurally modified hydroxyl functionalized pyridinium ionic liquids (ILs), liquid at room temperature, were synthesized and characterized. Alkylated N-(2-hydroxyethyl)-pyridinium ILs were prepared from alkylpyridines ... -
Hyperballistic Superdiffusion and Explosive Solutions to the Non-Linear Diffusion Equation
(Peer reviewed; Journal article, 2021)By means of a particle model that includes interactions only via the local particle concentration, we show that hyperballistic diffusion may result. This is done by finding the exact solution of the corresponding non-linear ... -
Hyperbolic Conservation Laws with Relaxation Terms: A Theoretical and Numerical Study
(Master thesis, 2011)Hyperbolic relaxation systems is an active field of research, with a largenumber of applications in physical modeling. Examples include modelsfor traffic flow, kinetic theory and fluid mechanics. This master s thesis is ...