Search for dissertations about: "zeta-potential"
Showing result 21 - 25 of 43 swedish dissertations containing the word zeta-potential.
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21. Adsorption of surfactants and polymers on iron oxides : implications for flotation and agglomeration of iron ore
Abstract : Iron ore pellets are an important refined product used as a raw material in the production of steel. In order to meet the requirements of the processes for iron production, the iron ore is upgraded in a number of steps including, among others, reverse flotation. READ MORE
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22. Rheology of the mortar phase of concrete with crushed aggregate
Abstract : In Sweden, concrete has traditionally been manufactured with glaciofluvial deposits as fine aggregate. In 2004 the production of this aggregate was approximately 21 million tons. Due to environmental reasons and local shortage of this natural resource there exists a goal to reduce the production to 12 million tons in year 2010. READ MORE
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23. Scanning probe microscopy studies of interaction forces between particles: emphasis on magnetite, bentonite and silica
Abstract : Scanning probe microscopy (SPM), such as the atomic force microscope (AFM), using colloidal probes is a highly suitable technique to probe single particle-particle interactions in aqueous solution. The interaction force between a colloidal probe on the AFM cantilever and sample surface is measured. READ MORE
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24. New approaches to concentration, desalting and separation of biopolymers in capillary electrophoresis
Abstract : In the first part of the thesis five new on-tube methods for concentration and desalting ofampholytes, such as peptides and proteins, are described in Papers I and II. The methods arebased on the fact that electrophoretic migration velocities decrease upon a decrease in theabsolute value of the zeta potential of a solute and the pore size of the electrophoresis mediumand upon an increase in the cross section of the electrophoresis chamber, the viscosity and theelectrical conductivity of the electrophoresis medium. READ MORE
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25. Multivariate characterization of paper machine wet-end chemistry using an electronic tongue
Abstract : Closed loop systems, seasonal variations in the composition of the pulp, shear forces and interdependence between many of the chemical variables are some of the factors that contribute to the complexity of wet-end chemistry. Multivariate methods are therefore often required to obtain an overview of the relations between variables in the wet end and variables affected by wet-end chemistry. READ MORE