Browsing Faculty of Mathematics and Natural Sciences by Title
Now showing items 4464-4483 of 9919
-
Irminger Sea deep convection injects oxygen and anthropogenic carbon to the ocean interior
(Peer reviewed; Journal article, 2016-10-27)Deep convection in the subpolar North Atlantic ventilates the ocean for atmospheric gases through the formation of deep water masses. Variability in the intensity of deep convection is believed to have caused large variations ... -
Irreducible unirational and uniruled components of moduli spaces of polarized Enriques surfaces
(Journal article; Peer reviewed, 2023)We prove that infinitely many irreducible components of the moduli space of polarized Enriques surfaces are unirational (resp. uniruled), characterizing them in terms of decompo- sitions of the polarization as an effective ... -
Is a warmer Arctic a more contaminated Arctic? Atlantification of Kongsfjorden in relation to contaminant levels in seabirds
(Master thesis, 2022-01-31)The Arctic, and Svalbard in particular, is experiencing a more rapid warming compared to the global average. Such Atlantification of the Arctic may change food webs in a way that can also affect the contaminant levels in ... -
Is chronic low back pain a risk factor for diabetes? The Nord-Trøndelag Health Study
(Peer reviewed; Journal article, 2018)Objective: The purpose of this study was to examine the risk of diabetes associated with the presence or absence of chronic low back pain, considering both cross-sectional and cohort data. Research design and methods: ... -
Is eggshell colouration related to the sex of the embryo in the northern lapwing Vanellus vanellus?
(Master thesis, 2019-06-21)This study focuses on eggshell pigmentation in the northern lapwing Vanellus vanellus, a shorebird in the plover family. The pigmentation of dark spots is attributed to the organic compound protoporphyrin, which is associated ... -
Is habituation measurable in lumpfish cyclopterus lumpus when used as cleaner fish in Atlantic salmon Salmo salar aquaculture?
(Peer reviewed; Journal article, 2019)To investigate how lumpfish interact in Atlantic salmon aquaculture, physiological stress responses and changes in behaviour were analysed in experienced and naive lumpfish. Experienced lumpfish (30.2 ± 7.93 g, mean ± SD) ... -
Is individual variation in competitive performance of reared juvenile cod influenced by haemoglobin genotype?
(Peer reviewed; Journal article, 2000)To succeed in scramble competition for food an individual fish will have to have characteristics that allow it to respond rapidly to encountered prey. A trait such as metabolic rate, which has a positive effect on oxygen ... -
“Is it important to consider males while measuring the reproductive potential of a fish stock?”
(Master thesis, 2008)This study explored the paternal contribution to stock reproductive potential in Northeast Arctic (NEA) cod (Gadus morhua L.). An equation for estimating total annual viable sperm production (VSP) was parameterised for NEA ... -
Is it possible to photoperiod manipulate spawning time in planktivorous fish ? A long-term experiment on Atlantic herring
(Journal article; Peer reviewed, 2022)The oocyte development (vitellogenesis) of individual fish is highly dependent upon their physiology which is influenced by both intrinsic and extrinsic factors. Thus, if individuals encounter poor biophysical conditions, ... -
Is the evolution of clutch size limited by incubation ability in shorebirds?
(Master thesis, 2015-06-01)Incubation is a crucial aspect of avian life history where differences in incubation techniques and investments can have long lasting effects on offspring and parental well- being and reproductive success. The factors ... -
Is there a Tornado in Alex's Blood Flow? A Case Study for Narrative Medical Visualization
(Journal article; Peer reviewed, 2022)Narrative visualization advantageously combines storytelling with new media formats and techniques, like interactivity, to create improved learning experiences. In medicine, it has the potential to improve patient understanding ... -
Is there a U-shaped relationship between physical activity in leisure time and risk of chronic low back pain? A follow-up in the HUNT Study
(Peer reviewed; Journal article, 2016-04-11)Background: Physical activity in leisure time is often considered to have favourable effects on the risk of low back pain (LBP), but demonstrating a definite association in epidemiological studies has proven difficult. The ... -
Is there an Association between vitamin D status and risk of chronic low back pain? A nested case-Control analysis in the Nord-Trøndelag Health Study
(Peer reviewed; Journal article, 2017-11-25)Objectives: To explore potential associations between vitamin D status and risk of chronic low back pain (LBP) in a Norwegian cohort, and to investigate whether relationships depend on the season of blood sample collection. ... -
Is there evidence for a 4.2 kaBP event in the northern North Atlantic region?
(Peer reviewed; Journal article, 2019-09-02)We review paleoceanographic and paleoclimatic records from the northern North Atlantic to assess the nature of climatic conditions at 4.2 ka BP, which has been identified as a time of exceptional climatic anomalies in many ... -
Isavsmelting og postglaciale flaumskredvifter i Arna, Hordaland
(Master thesis, 1975) -
Isavsmelting og senglasial strandforskyvning på Bokn i Rogaland
(Master thesis, 2018-12-21) -
Isavsmeltinga i Eksingedalen og områda omkring
(Master thesis, 1974) -
Isavsmeltingshistoria ved munningen av Sognefjorden
(Master thesis, 2019-12-20)Målet med oppgåva er å rekonstruere isavsmeltingshistoria på Værlandet, og isdynamikken nord for Sognefjorden ut frå isskuringsobservasjonar. Det er gjort 10Be-eksponeringsdatering frå ni flyttblokker på Værlandet. I tillegg ... -
Isavsmeltningshistorie og havnivåendringer på Værlandet, nord for munningen av Sognefjorden
(Master thesis, 2022-06-01)Forskning på havnivå og isavsmeltinghistorie tilbake i tid er viktig for å forstå hvilke prosesser som har påvirket utviklingsforløpet. Dette kan så brukes til å modellere fremtidige endringer i havnivå. Det er i dette ... -
An isenthalpic formulation for simulating geothermal systems with phase changes
(Chapter; Peer reviewed, 2023)We propose a unified isenthalpic formulation for the equilibrium problem of compositional multiphase mixtures. To solve the equilibrium problem numerically, we used an interior point method with line search and present an ...