Blar i Fakultet for naturvitenskap (NV) på tittel
Viser treff 12482-12501 av 12736
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Vapor deposited Cr-doped ZnS thin films: Towards optically pumped mid-infrared waveguide lasers
(Journal article; Peer reviewed, 2016)Compact, affordable mid-IR lasers require the development of gain materials in waveguide form. We report on the high vacuum deposition of Cr:ZnS films with concentration ranging from 1018-1020 dopants/cm3 . At low ... -
Vapor Liquid Equilibrium (VLE) in H2O-Amine-CO2 system
(Master thesis, 2012)New experimental data for vapor-liquid equilibrium of CO2 in aqueous solutions of 3M/26.84% wt, 1M/9% wt and 0.1M/0.89% wt AMP (2-amino-2-methyl-1-propanol) and 1.5M PZ are reported from 313 to 393K. Low pressure/temperature ... -
Vapor Liquid Equilibrium Measurements of Two Promising Tertiary Amines for CO2 Capture
(Journal article; Peer reviewed, 2019)Post combustion CO2 capture is still a rather energy intense, and therefore expensive, process. Much of the current research for reducing the process energy requirements is focused on the regeneration section. A good ... -
Vapor liquid equilibrium of pure and aqueous Methyl diethanolamine (MDEA), 2-Dimethylmonoethanolamine (DMMEA), N-Methylmonoethanolamine (MMEA) and 1-(2-Aminoethyl)piperazine (AEP): Experimental results and modeling
(Peer reviewed; Journal article, 2023)This work presents new vapor-liquid data for the pure components 2-dimethylmonoethanolamine (DMMEA) and N-methylethanolamine (MMEA) and for the binary systems of aqueous methyldiethanolamine (MDEA), DMMEA, MMEA, and ... -
VAPOR-LIQUID EQUILIBRIA OF BICARBONATE FORMING SOLVENTS FOR POST-COMBUSTION CO2 CAPTURE: EXPERIMENTAL AND MODELING
(Master thesis, 2015)Bicarbonate forming solvents have been proposed in the literature as promising solvents for capturing CO2 in flue gases due to their high CO2 loading capacities and low heats of absorption. Key solvent properties are ... -
Vapor-Liquid equilibrium in DEEA/H2O/CO2 system; Experiments and modeling
(Master thesis, 2011)Experiment data for vapor-liquid equilibrium (VLE) of CO2 were conducted for DEEA 5M and 2M.The study was performed in two VLE apparatuses from 40 to 120 °C with atmospheric VLE apparatus and high pressure VLE apparatus. ... -
Vapor–liquid equilibria data for 2-piperidineethanol and 1-(2-hydroxyethyl)pyrrolidine in aqueous solutions and a UNIQUAC model representation
(Peer reviewed; Journal article, 2022)This work reports equilibrium data for two amines, 2-piperidineethanol (2-PPE) and 1-(2-hydroxyethyl)pyrrolidine (1-(2HE)PRLD), and their aqueous solutions. The pressure, temperature, and composition data are used to ... -
Vapour phase conversion of acetic acid over metal oxide catalysts at hydropyrolysis conditions.
(Master thesis, 2023)De utslippet av drivhusgasser i løpet av de siste 150 årene har ført til klimaendringer, noe som tvinger verden til å finne alternative måter å produsere transportbrensel og plattformkjemi på. Tre er et lett tilgjengelig ... -
Vapour Pressure of Bi above Bi-Ti Alloys by Transpiration Method
(Master thesis, 2017)Titanium is an attractive metal with wide-ranging applications due to its properties. Titanium is one of the most corrosion resistant metals with the highest strength-to-weight ratio. The only industrial production route ... -
Vapour-liquid equilibria in pure N-Methyl-1,3-diaminopropane (MAPA), 1,3-diaminopropane (DAP), 2-(Isopropylamino)ethanol (IPAE), N-tert-Butyldiethanolamine (N-TBDEA) and their aqueous solutions
(Journal article; Peer reviewed, 2020)New energy effective solvents are in demand to make global CO2 capture feasible. Phase change solvents seem to be one avenue to reach this goal. This paper presents new experimental data and modelling results for four ... -
Vapour-liquid equilibrium in the monoethylene glycol - methane system at elevated pressures
(Master thesis, 2012)A range of different chemicals are used in natural gas processing. The systems operate in closed loops, but a small amount of the chemicals are lost due to the solubility of the chemical in the gas phase. This leads to ... -
Vapour-liquid equilibrium study of tertiary amines, single and in blend with 3-(methylamino)propylamine, for post-combustion CO2 capture
(Peer reviewed; Journal article, 2019) -
Variability in Calanus spp. abundance on fine- to mesoscales in an Arctic fjord: implications for little auk feeding
(Journal article; Peer reviewed, 2014)We studied the abundance of calanoid copepods of the genus Calanus in a high-resolution sampling grid located in the vicinity of a breeding colony of an avian Calanus predator, the little auk (Alle alle) in an Arctic fjord ... -
Variability of the Quasi Two-Day Wave in the Mesosphere
(Master thesis, 2013)The Quasi-Two-Day-Wave (QTDW) is examined through analysis of data given by the SKiYMET-radar at Dragvoll, Trondheim (63◦N,10◦E). Through spectral analysis the occurrence and generation mechanisms of the different wave ... -
Variance in relative gene expression RT-qPCR analysis of Atlantic salmon - before, during and after delousing
(Bachelor thesis, 2020)Ekspresjonen av stressrelaterte gen i laks (Salmo salar) er av stor interesse når det kommer til velferdsstudier hos oppdrettsfisk. Det å ha en bedre forståelse for stressrespons på et genetisk nivå, kan hjelpe til med å ... -
Variation and correlation in the timing of breeding of North Atlantic seabirds across multiple scales
(Peer reviewed; Journal article, 2022)1. Timing of breeding, an important driver of fitness in many populations, is widely studied in the context of global change, yet despite considerable efforts to identify environmental drivers of seabird nesting phenology, ... -
Variation in basal metabolic rate within bats of the family Vespertilionidae
(Master thesis, 2020)Mange fysiologiske variabler, slik som metabolsk rate, varierer med klima og breddegrad. Det finnes imildertid lite informasjon om termoregulering i flaggermus ved høye breddegrader. Derfor undersøkte jeg de termoregulerende ... -
Variation in chemical composition and genetic differentiation among bilberry (Vaccinium myrtillus L.) populations on a latitudinal gradient
(Master thesis, 2011)Bilberry (Vaccinium myrtillus) is native to Europe and North America and constitutes an important nutritional resource for both humans and animals. Over the years, a series of chemical analyses have revealed several ... -
Variation in generation time reveals density regulation as an important driver of pace of life in a bird metapopulation
(Journal article; Peer reviewed, 2021)Generation time determines the pace of key demographic and evolutionary processes. Quantified as the weighted mean age at reproduction, it can be studied as a life-history trait that varies within and among populations and ... -
Variation in MHC genotypes in two populations of house sparrow (Passer domesticus) with different population histories
(Journal article; Peer reviewed, 2011)Small populations are likely to have a low genetic ability for disease resistance due to loss of genetic variation through inbreeding and genetic drift. In vertebrates, the highest genetic diversity of the immune system ...