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This paper presents a generic system dynamic model to simulate and analyze a desertification system and its stability for different desertification syndromes. The study is one of many desertification related modelling approaches carried out by different project partners within the frames of DeSurvey (A Surveillance System for Assessing, Monitoring and Modelling Desertification; 2005-2010). DeSur
Methane is a powerful greenhouse gas and growing concern regarding global climate changes and landfill gas is regarded as one of the major sources for methane migration to the atmosphere. In this study we present research work with the objective to evaluate the use of 3D geoelectrical resistivity to detect gas migration in landfills. Extensive field experiments were conducted at the Filborna landf
Extensive changes in public organizations have been carried through since the end of the 20th century as a way of achieving higher efficiency. Inspiration came from the private sector. The Swedish Enforcement Authority carried through several organizational changes during this time. The authority was during 1997-2006 organized in ten independent authorities subordinated to the National Tax Board.
The time dependent Maxwell system is supplemented with the constitutive relations of linear bianisotropc media and is treated as a neutral integro-differential equation in a Hilbert space. By using the theory of abstract Volterra equations and strongly continuous semigroups we obtain general well-posedness results for the corresponding mathematical problem.
Abstract not available.
The motion of pre-existing edge dislocations in an infinite linear elastic body is studied. Motion is due to a quasi-statically steady-state growing crack. In the model, the dislocations glide if the force on the dislocation exceeds a critical value. Obtained results are changes in dislocation density, the shielding effect on the crack tip and residual stresses. The model is applied to an isotropi
We have measured critical supersaturations of dried single component particles of sodium caprylate (CH3(CH2)6COONa), sodium caprate (CH3(CH2)8COONa), sodium laurate (CH3(CH2)10COONa) and sodium myristate (CH3(CH2)12COONa), respectively, in the diameter range 33-140 nm at 296 K using a static thermal gradient diffusion cloud condensation nucleus counter. These fatty acid sodium salts are surface ac
