Browsing Det matematisk-naturvitenskapelige fakultet by Title
Now showing items 1-20 of 33
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(Journal article / Tidsskriftartikkel / SubmittedVersion, 2017)Two hybrid van der Waals density functionals (vdW-DFs) are developed using 25% Fock exchange with (i) the consistent-exchange vdW-DF-cx functional [K. Berland and P. Hyldgaard, Phys. Rev. B 89, 035412 (2014)] and (ii) with ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)Background: During pregnancy, many women experience sleep problems and anxiety that require treatment. The long-term safety for the child of maternal benzodiazepine (BZD) and z-hypnotic use during pregnancy remains ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2010)The nature of intrinsic defects in ZnO films grown by metal organic vapor phase epitaxy was studied by positron annihilation and photoluminescence spectroscopy techniques. The supply of Zn and O during the film synthesis ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)We studied the structural properties, defect formation, and thermal stability of H in hydrothermally grown ZnO single crystals implanted with H- dose ranging from 2.5×1016 to 1×1017 cm−2. H implantation is found to create ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)Diffusion of Li into ZnO from an “infinite” surface source under oxygen-rich conditions is studied using secondary ion mass spectrometry. The Li concentration-versus-depth profiles exhibit a distinct and sharp drop, which ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)As-grown and pre-oxidized silicon carbide (SiC) samples of polytype 4H have been annealed at temperatures up to 1950 °C for 10 min duration using inductive heating, or at 2000 °C for 30 s using microwave heating. The samples ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)Several fundamental aspects of the oxidation-induced redistribution of Ge in thin films of SiGe are studied. This includes the incorporation of Ge into the oxide and the formation of what is alternatively referred to as ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)The interaction of hydrogen (H) with lithium (Li) and zinc vacancies (VZn) in hydrothermally grown n-type zinc oxide (ZnO) has been investigated by positron annihilation spectroscopy (PAS) and secondary ion mass spectrometry. ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)The Hall coefficient RH and electrical conductivity of misfit calcium cobalt oxide (Ca2CoO3−δ)q(CoO2) (CCO) were measured at room temperature for different oxygen vacancy concentrations δ. Based on these and numerous ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)The conductivity and Seebeck coefficient of CaMnO3−δ have been studied at temperatures up to 1000 °C and in atmospheres with controlled oxygen partial pressure. Both transport coefficients were varied in situ by the ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)Climate change will affect the population dynamics of many species, yet the consequences for the long-term persistence of populations are poorly understood. A major reason for this is that density-dependent feedback effects ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)Host-intrinsic factors as well as environmental changes are known to be strong evolutionary drivers defining the genetic foundation of immunity. Using a novel set of teleost genomes and a time-calibrated phylogeny, we here ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)The lateral distributions of intrinsic point defects in n-type (0001) 4H-SiC have been investigated following room temperature irradiation with a focused beam of 10 keV protons. Laterally resolved deep level transient ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)The present study examines the kinetics of dry thermal oxidation of (111), (110), and (100) silicon-germanium (SiGe) thin epitaxial films and the redistribution of Ge near the oxidation interface with the aim of facilitating ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)Crude oil spills are a worldwide ocean conservation threat. Fish are particularly vulnerable to the oiling of spawning habitats, and crude oil causes severe abnormalities in embryos and larvae. However, the underlying ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)Non-polar ZnCdO films, grown over m- and r-sapphire with a Cd concentration ranging between 0.8% and 5%, have been studied by means of slow positron annihilation spectroscopy (PAS) combined with chemical depth profiling ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)High-purity epitaxial layers of n-type 4H-SiC have been implanted with 4.3-MeV Si ions to a dose of 3 × 108 cm−2 and then subjected to dry isothermal oxidation at temperatures between 1050 and 1175 °C. Analysis of the ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)Exhumed reservoirs providing evidence of CO2 accumulation and transport in geological history offer a unique possibility to supplement our knowledge on leakage processes observed along faults and fractures. A field location ...
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(Series / Serietittel, 2006)
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)Introduction: The promotion of a healthy diet, physical activity and measurement of blood glucose levels are essential components in the care for women with gestational diabetes mellitus (GDM). Smartphones offer a new way ...