Browsing Fakultet for naturvitenskap (NV) by Title
Now showing items 12628-12647 of 12667
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YDFL Operating in 1150-1200-nm Spectral Domain
(Journal article; Peer reviewed, 2013)A family of high-power Yb-doped fiber lasers operated in the range of 1150–1180 nm with output powers of up to 35 W and optical efficiencies up to 60% is realized. Operation at 1200 nm is also demonstrated. Amplified ... -
Yield-increasing additives in kraft pulping: Effect on carbohydrate retention, composition and handsheet properties
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:137, Doctoral thesis, 2008) -
Youngs's modulus of tumour tissue from an in vivo breast cancer model - effect of treatment with guluronate oligosaccharides
(Peer reviewed; Journal article, 2019)Increased tissue stiffness is a classic characteristic of solid tumours, and breast tumours are often first identified as a palpable lump. Increased tissue stiffness in tumours is more than just a typical, and often easily ... -
Yrkesfaglig praksis i bachelorutdanningen for yrkesfaglærere: En kartlegging av studentenes erfaringer
(Journal article; Peer reviewed, 2018)This study examines experiences of vocational teacher students in practice at work places. The aim is to develop and ensure that the practice is in accordance with the purpose of the Vocational Teacher Education programme ... -
Yttrium promoted Ni-based double-layered hydroxides for dry methane reforming
(Journal article; Peer reviewed, 2018)Yttrium modified Ni-based double-layered hydroxides were tested as novel catalysts in dry methane reforming. The catalysts were characterized by XRF, BET analysis, XRD, TPR-H2, TPD-CO2, TGA/DSC-MS, H2 chemisorption and ... -
Z2 characterization for three-dimensional multiband Hubbard models
(Peer reviewed; Journal article, 2020)We introduce three numerical methods for characterizing the topological phases of three-dimensional multiband Hubbard models based on twisted boundary conditions, Wilson loops, as well as the local topological marker. We ... -
Zebrafish (Danio rerio) behaviour is largely unaffected by elevated pCO2
(Peer reviewed; Journal article, 2016)Ocean acidification, the decrease in ocean pH caused by anthropogenic emission of carbon dioxide, can cause behavioural disturbances in marine teleost species. We investigated whether AB-strain zebrafish (Danio rerio) show ... -
Zernike phase contrast in high-energy x-ray transmission microscopy based on refractive optics
(Journal article; Peer reviewed, 2018)The current work represents the first implementation of Zernike phase contrast for compound refractive lens based x-ray microscopy, and also the first successful Zernike phase contrast experiment at photon energies above ... -
Zero strain cathode
(Master thesis, 2023)For å realisere fast fase-batterier som en levedyktig, markedsklar teknologi må problemer med tap av kontakt mellom batterikomponenter løses, da det medfører tap av kapasitet som til slutt ødelegger batteriet. En av ... -
Zero temperature superconductor–edge metal–insulator transition in two-dimensional bosonic systems
(Peer reviewed; Journal article, 2022)Motivated by the recent experimental observation of an intermediate bosonic metallic state in the two-dimensional superconductor-insulator transition at T = 0 , we study an extended Bose-Hubbard model in the limit of a ... -
Zigzag-Shaped Superlattices on the Basis of Graphene Nanoribbons: Structure and Electronic Properties
(Journal article; Peer reviewed, 2016)The paper focuses on superlattices consisting of two coplanar fragments of one-layer graphene nanoribbons that have different width and are connected at an angle. Classification of such superlattices was carried out; their ... -
Zinc-rich coatings for improved corrosion resistance of extruded aluminium heat-exchange tubing in acidified chloride solution
(Doctoral theses at NTNU;2017:294, Doctoral thesis, 2017)Thin walled heat exchanger Al alloy tubes, with solid-solution Zn-rich surface, are widely used by the automotive industry and are considered by the heat, ventilation, air-conditioning and refrigeration market. This work ... -
Zirconia-Supported Catalysts for Oxidation of NO to NO2 in the Production of Nitric Acid
(Master thesis, 2021)Salpetersyre er et viktig kjemisk produkt som hovedsakelig blir brukt til å produsere kunstgjødsel av nitrater. Den industrielle prosessen for framstilling av salpetersyre foregår i tre hovedtrinn, kald Ostwaldprosessen. ... -
Zirconium hydrogen phosphate as an additive in electrocatalytic layers for the oxygen evolution reaction in PEM water electrolysis
(Journal article, 2015)For reasons of electrode integrity and durability it is desirable to add zirconium hydrogen phosphate to electrocatalytic layers in PEM water electrolysis. Common synthesis methods are frequently associated with an ... -
ZnO-Carbon-Nanotube Composite Supported Nickel Catalysts for Selective Conversion of Cellulose into Vicinal Diols
(Journal article; Peer reviewed, 2015)A ZnO-nanolayer-coated carbon nanotube (CNT) composite (ZnO–CNT) was employed as a support to immobilise Ni catalysts. Well-mixed oxides, formed as a result of enhanced interfaces between the two oxides on CNTs, resulted ... -
Zooplankton and sediment fluxes in two contrasting fjords reveal Atlantification of the Arctic
(Peer reviewed; Journal article, 2021)Svalbard fjords are facing a significant increase in Atlantic water inflow, which influences all ecosystem components, thus the objective of this study was to assess how recent Atlantification impacts the functioning of ... -
Zr-Based Metallic Glasses as Biomaterials: Design, Production and Characterization
(Doctoral theses at NTNU;2019:2, Doctoral thesis, 2019)Metallic Glasses (MGs) have a unique non-crystalline structure which is the main reason for their extraordinary properties, e.g. high hardness, good wear resistance, high corrosion resistance, as well as the ability to be ... -
Zwitterionic HILIC tandem mass spectrometry with isotope dilution for rapid, sensitive and robust quantification of pyridine nucleotides in biological extracts
(Peer reviewed; Journal article, 2020)The pyridine nucleotides nicotineamide adenine dinucleotide (NAD) and nicotineamide adenine dinucleotide phosphate (NADP) are conserved coenzymes across all domains of life, and are involved in more than 200 different ... -
µSR study of Al-0.67%Mg-0.77%Si alloys
(Journal article; Peer reviewed, 2014)Zero-field muon spin relaxation measurements were carried out with Al-0.67%Mg- 0.77%Si alloys in the temperature range from 20 K to 300 K. Observed relaxation spectra were compared with the relaxation functions calculated ...