Filtyp
Hydrogen peroxide (H2O2) is for the first time measured and imaged in two-dimensions in an HCCI engine using photofragmentation laser-induced fluorescence (PF-LIF). Qualitatively, the experimental data agree with simulations.
Laser-induced breakdown spectroscopy (LIBS) is an experimentally simple method capable of measuring elemental composition in a flame. Moreover, the breakdown threshold energy is temperature dependent. Hence, LIBS allows multiple parameter determination in combustion environments.
We present a calibration free technique for spatially resolved imaging of flame temperature. Its application is demonstrated in a low pressure premixed methane flame seeded with indium. Temperature measurements over a range of equivalence ratios are investigated.
This paper report on experiments performed using a dielectric barrier surface discharge to increase the combustion rate in a Bunsen-type burner. The burner has a coaxial geometry where premixed fuel-air flows in the outer annular tube while a jet of air can be injected through the central tube, thus increasing turbulent mixing and flame speed. When the central jet is used the power density but not
With a national prevalence of 4.9% in the adult population, the HIV-1 epidemic in Kenya is the fifth largest in the world. HIV-1 prevalence is more than three-fold higher among HIV key populations – including men who have sex with men (MSM), people who inject drugs (PWID), and female sex workers (FSW) than in the general heterosexual (HET) population. However, the contribution of different risk gr
Sentences with quantified expressions involve mental representations of sets of individuals for which some property holds (the reference set), as well as of sets for which the property does not hold (the complement set). Both sets can receive discourse focus with negative quantifiers, while the reference set is strongly preferred with positive quantifiers, complement set focus however being possib
Background: Upright birth positions may reduce the risk for instrumental delivery. The aim of this study was to test, by means of a randomised controlled trial, the hypothesis that the use of a birthing seat during the second stage of labour decreases the number of instrumental deliveries and thus counterbalance any adverse perineal outcome or severe blood loss.Methods: One-thousand and two nullip
How do political parties respond to external shocks? Using an original survey of political parties across Europe conducted in June 2020 and Chapel Hill Expert Survey (CHES) data on partisan ideological positioning, we argue that the pre-existing ideological stances of Europe’s political parties shaped their response to emerging Covid- 19 policy issues, including the tension between economic normal
Det finns inte fler än ungefär femton fräkenväxter i hela världen. Men under karbon- och permtiden för ungefär 300 miljoner år sedan var de mycket vanliga, och mycket större.
Background: The WHO advises against recumbent position for longer periods during labour and birth. It has been suggested that upright posi-tions may improve childbirth outcomes and reduce the need for oxytocin augmentation. However RCTs of interventions to encourage upright positions are scarce. The aims of this study were to assess whether there is a relationship between the use of oxytocin augme
Hur klarar växterna av världens vanligaste metalliska grundämne, nämligen aluminium? Mycket av världens samlade kunskap om hur aluminium påverkar våxter kommer fån tebusken, men både tomtskräppa och mattlummer samlarpå sig aluminiumjoner. Följ med på en biokemisk resa i växternas värld!
The question whether a single extreme climate event, such as a hurricane or heatwave, can be attributed to human induced climate change has become a vibrant field of research and discussion in recent years. Proponents of the most common approach (probabilistic event attribution) argue for using single event attribution for advancing climate policy, not least in the context of loss and damages, whiThe question whether a single extreme climate event, such as a hurricane or heatwave, can be attributed to human induced climate change has become a vibrant field of research and discussion in recent years. Proponents of the most common approach (probabilistic event attribution) argue for using single event attribution for advancing climate policy, not least in the context of loss and damages, whi
This paper explores whether Ethiopia's rapid economic growth is transformative enough for the country to eventually catch up with high-income countries. It does so by exploring the change and continuity of four elements of social capability from 1950 to 2020: structural transformation, economic inclusion and the state's autonomy and accountability. It finds that Ethiopia's social capability modestThis paper explores whether Ethiopia's rapid economic growth is transformative enough for the country to eventually catch up with high-income countries. It does so by exploring the change and continuity of four elements of social capability from 1950 to 2020: structural transformation, economic inclusion and the state's autonomy and accountability. It finds that Ethiopia's social capability modest
En presentation av mitt avhandlingsprojekt, med fokus på den del av studien som är förestående.
In this paper I argue that it’s impossible for there to be a single universal theory of meaning for a language. First, I will consider some minimal expressiveness requirements a language must meet to be able to express semantic claims. Then I will argue that in order to have a single unified theory of meaning, these expressiveness requirements must be satisfied by a language which the semantic the
Radiopharmaceuticals have been used for the treatment of various forms of cancer since the 1940s. In recent years, the advantages of alpha emitting radionuclides have emerged as a favourable treatment option. However, most alpha emitting radionuclides have long decay chains with long-lived daughter radionuclides. This leads to uncertainties in the dosimetry for normal organs and tissues, when esta
Measurements are widely used in science, engineering, industry, and trade. They form the basis for experimental scientific research, approach, and progress; however, their foundations are seldom thought or questioned. Recently poikilosis, pervasive heterogeneity ranging from subatomic level to biosphere, was introduced. Poikilosis makes single point measurements and estimates obsolete and irreleva
