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Here we present results from a field experiment in a sub-arctic wetland near Abisko, northern Sweden, where the permafrost is currently disintegrating with significant vegetation changes as a result. During one growing season we investigated the fluxes of CO2 and CH4 and how they were affected by ecosystem properties, i.e., composition of species that are currently expanding in the area (Carex rot

The effective refractive-index as a function of vacuum wavelength is approximated by Lagrange interpolation polynomials. The root-mean-square value of the chromatic dispersion is then calculated analytically. It is demonstrated that use of fourth degree polynomials is far more efficient than use of second degree polynomials. The rms-value of the chromatic dispersion over the wavelength range [1.25

Background: Presumed effects of global warming on occupational heat stress aggravate conditions in many parts of the world, in particular in developing countries. In order to assess and evaluate conditions, heat stress must be described correctly and measured correctly. Objective: Assessment of heat stress using internationally recognized methods. Design: Two such methods are wet bulb globe temper

Både högern och vänstern har fallit offer för USA:s skickliga propagandakrig för att rättfärdiga en militär insats mot Libyen. Medan Vita Husets hemsida skriver i ett uttalande daterat 24 mars att USA ”förkastar våld under alla omständigheter” bara en vecka efter amerikanska drönare dödade 41 civila i Pakistan. Ändå lyckades USA, UK och Frankrike övertyga omvärlden att en militärinsats i Libyen sk

Assistive products may elicit unpleasant feelings within both the actual user and persons around. By analysing two complementary studies, this paper tries to illuminate which unpleasant feelings may be elicited. In study A industrial design students evaluated assistive products. In study B young persons with disabilities were interviewed about their everyday experiences. Negative statements by par

Popular Abstract in Swedish Den största källan till läkemedelsrester i vattenmiljön är utgående renat avloppsvatten från våra kommunala reningsverk. Läkemedel är utvecklade för att ha olika typer av biologiska effekter. Vilka dessa är i människan är relativt välkänt, medan effekterna på vattenlevande organismer och andra djur till stor del är okända. Detta i kombination med deras resistens mot de The discharge of effluents from wastewater treatment plants (WWTPs) is considered to be the major source of residual pharmaceuticals frequently found in aquatic environments. The complex nature of such compounds tends to make conventional biological treatments aimed at their removal ineffective. The present thesis concerns the removal of 62 different active pharmaceutical ingredients commonly dete

The monograph explores: 1) the determinants of length, degree of indexation, degree of synchronization and coverage of collective agreements across monetary regimes in Sweden 1908 to 1990, 2) the effect of these determinants on the business cycles as described by length and correlations of macroeconomic variables. The first part synthesizes and extends the teory of endogenous wage contracts. The s

Multiple antenna transmitter and receiver architectures that combine antenna selection with RF pre-processing have been shown to significantly outperform conventional antenna selection with the same number of RF chains. Often, performance close to a full complexity architecture (with more RF chains) is also achieved. This work studies the effect of hardware and signal processing non-idealities on