Browsing Fakultet for naturvitenskap (NV) by Title
Now showing items 5372-5391 of 12540
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Hydrogen embrittlement and corrosion evaluation of Alloy 725 alloyed with B and Cu
(Doctoral theses at NTNU;2023:40, Doctoral thesis, 2023)The need to achieve materials with higher strength and better corrosion resistance results in producing new alloys. Nickel base alloys are among the materials which have been subjected to several studies related to producing ... -
Hydrogen Hydrate Promoters for Gas Storage—A Review
(Peer reviewed; Journal article, 2023)Clathrate and semi-clathrate hydrates have recently been gaining major interest as hydrogen storage material. The benefits of hydrates, such as reversible formation and dissociation, their environmentally friendly nature, ... -
Hydrogen induced stress cracking of alloy 718: Effects of chemical composition and microstructure
(Master thesis, 2014)This master thesis have examined the effect of variations in composition and microstructure on the HISC susceptibility of Inconel-718. 6 different Inconel-718 variants with different compositions and heat treatments were ... -
Hydrogen Induced Stress Cracking of Inconel 625 - Effect of Production Method, Heat Treatment and Cold Working
(Master thesis, 2016)The following work has examined the effect of heat treatment, production method and cold working (CW) on the hydrogen induced stress cracking (HISC) susceptibility of Inconel 625 (UNS N06625). This was done by hydrogen ... -
Hydrogen Induced Stress Cracking of Spheroidal Graphite Cast Iron
(Master thesis, 2020)Abstract will be available on 2023-06-17 -
Hydrogen permeation in different microstructures of 66SiMnCrMo6-6-4 steel
(Master thesis, 2023)Diffusiviteten til hydrogen i stål er bestemmes av ulike mekanismer som forårsaker sprøhet. Avhengig av mikrostrukturen kan hydrogensprøhet være forårsaket av mange typer mekanismer, som derfor gjør det utfordrende å forutsi ... -
Hydrogen Porosity in Al-Si Foundry Alloys
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:3, Doctoral thesis, 2010)Aluminium alloys based on the aluminium-silicon system are popular for automotive and aerospace applications, thanks to their high strength to weight ratio, excellent castability, and corrosion resistance. Microporosity ... -
Hydrogen production by catalytic partial oxidation of methane
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:327, Doctoral thesis, 2008)Hydrogen production by catalytic partial oxidation of natural gas was investigated using tools ranging from theoretical calculations to experimental work and sophisticated characterization techniques. Catalytic partial ... -
Hydrogen production combining Steam Methane Reforming with Cryogenic Carbon Capture
(Master thesis, 2023)Formålet med denne rapporten var å utføre et litteratursøk og simulering av produksjon av hydrogen ved dampmetanreformering med kryogen karbonfangst, for så å skape en modell som beskriver prosessen. En modell for ... -
Hydrogen production from biomass derived compounds by sorption enhanced reforming
(Master thesis, 2013)Sorption enhance steam reforming (SESR) is a technique which involves the integration of three reactions in one stage; namely steam reforming (SR), water gas shift (WGS) and CO2 sorption This project was developed to study ... -
Hydrogen Storage in Mg-based Alloys Nanostructured by Rapid Solidification
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:197, Doctoral thesis, 2011) -
Hydrogen sulfide removal from natural gas using membrane technology: a review
(Peer reviewed; Journal article, 2021)Natural gas, having a significantly lower CO2 emission factor than oil and coal when combusted, is accepted as an important transition fuel towards carbon net-zero society. To meet the calorific value requirements (≥34.0 ... -
Hydrogen Sulfide Solubility in 50 wt.% and 70 wt.% Aqueous Methyldiethanolamine at Temperatures from 283 to 393 K and Total Pressures from 500 to 10000 kPa
(Peer reviewed; Journal article, 2020)The hydrogen sulfide (H2S) absorption capacity of a 70 wt% aqueous methyldiethanolamine (MDEA) solution was investigated in a static-analytic apparatus at temperatures of 283, 353 and 393 K and pressures of 2000, 6000 and ... -
Hydrogen-Based Iron Recovery from Bauxite Residue
(Bachelor thesis, 2022)Valorisering av bauksittavfall er essensielt for bærekraftig produksjon av aluminium, og undersøkes videre i denne bacheloroppgaven. Hydrogenreduksjon av jernoksider i en blanding av bauksitt-avfall og kalkstein ble studert ... -
Hydrogen-Based Iron Recovery from Bauxite Residue
(Bachelor thesis, 2022)Valorisering av bauksittavfall er essensielt for bærekraftig produksjon av aluminium, og undersøkes videre i denne bacheloroppgaven. Hydrogenreduksjon av jernoksider i en blanding av bauksitt-avfall og kalkstein ble studert ... -
Hydrogen-chlorine fuel cell for production of hydrochloric acid and electric power : chlorine kinetics and cell design
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:932005:70, Doctoral thesis, 2005)This thesis work is the continuation and final part of a joint project between the Department of Materials Technology, NTNU and Norsk Hydro Research Center in Porsgrunn, looking at the possibility of using fuel cells for ... -
Hydrogenation of CO to olefins over a supported iron catalyst on MgAl2O4 spinel: effects of the spinel synthesis method
(Journal article; Peer reviewed, 2020) -
Hydrology influences breeding time in the white‑throated dipper
(Peer reviewed; Journal article, 2020)Background: Earlier breeding is one of the strongest responses to global change in birds and is a key factor determining reproductive success. In most studies of climate effects, the focus has been on large-scale environmental ... -
Hydrolysater av restråstoff fra laks (Salmo salar) - effekten av antioksidanter på kvaliteten under lagring
(Master thesis, 2020)Årlig genererer oppdrett av laks (Salmo salar) og regnbueørret (Oncorhynchus mykiss) i Norge flere hundre tusen tonn restråstoff. Dette restråstoffet inneholder verdifulle omega-3-fettsyrer og lett-fordøyelige proteiner. ... -
Hydrolyse av marint restråstoff – karakterisering av hydrolysat fra norsk vårgytende sild (Clupea harengus) og melke fra torsk (Gadus morhua Linnaeus)
(Master thesis, 2021)Abstract will be available on 2024-05-15