Sökning: "Andreas Fredriksson"

Hittade 5 avhandlingar innehållade orden Andreas Fredriksson.

1. 1. Adsorption of heptyl xanthate at the metal sulphide/aqueousinterface

   Författare :Andreas Fredriksson; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry of Interfaces; Gränsytors kemi;

   Sammanfattning : In sulphide mineral flotation a sufficient hydrophobicity of the mineral surfaces is obtained by the adsorption of collector chemicals at the metal sulphide/aqueous interface. This surface alteration is of fundamental and applied interest. LÄS MER

3. 2. Kinetics of collector in-situ adsorption on metal sulphide surfaces studied by ATR-FTIR spectroscopy

   Författare :Andreas Fredriksson; Luleå tekniska universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry of Interfaces; Gränsytors kemi;

   Sammanfattning : In sulphide mineral flotation, a sufficient hydrophobicity of the mineral surfaces is obtained by the adsorption of collector chemicals at the metal sulphide/aqueous interface. This surface alteration is of fundamental and applied interest. LÄS MER

4. 3. From Fossil To Fact : The Denisova Discovery as Science in Action

   Författare :Mattis Karlsson; Eva Hemmungs Wirtén; Martin Fredriksson; Andreas Nyblom; Staffan Bergwik; Linköpings universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; HUMANIORA; HUMANITIES; Actor network theory; aDNA; ANT; Denisovan; Denisova human; Denisova hominin; DNA; Knowledge; Bruno Latour; Science; Science in action; STS; Wikipedia;

   Sammanfattning : From Fossil to Fact: The Denisova Discovery as Science in Action is a study of the (actor) networked relations that make and shape science through the case of the discovery of the Denisova human.In 2010, Nature published the article “The complete mitochondrial DNA genome of an unknown hominin from southern Siberia”, the article revealed the results of mtDNA sequencing of a fossilised finger bone excavated from the Denisova Cave in Siberia, showing that the fossil belonged to an individual of a previously unknown type of humans, the Denisovans. LÄS MER

5. 4. The nature of gold in the Aitik Cu-Au deposit : implications for mineral processing and mine planning

   Författare :Monika Sammelin; Andreas Fredriksson; Luleå tekniska universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Malmgeologi; Ore Geology;

   Sammanfattning : The Aitik mine is a large Cu-Au producer in Europe with an annual production of 28 million tons of ore and a planned expansion of production to 36 million tons of ore until year 2013. Large ongoing investments are done in the mine and a new processing plant is built to manage the capacity increase. LÄS MER

7. 5. Empirical Essays in Labor and Development Economics

   Författare :Wei Si; Andreas Madestam; Peter Fredriksson; Anna Sjögren; Stockholms universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Peer Effect; Knowledge Spillover; Cognitive Distance; Research Productivity; Public Health Insurance; Labor Supply; Job Mobility; Informality; Labor Market; Higher Education Expansion; Gender Norms; Gender Equality; Economics; nationalekonomi;

   Sammanfattning : This thesis consists of three self-contained empirical essays in labor and development economics.Diverse Expertise, Peer Effects, and Research Productivity: Does diversity in idea space matter? We empirically explore whether the cognitive distance between collaborators affects peer effects and productivity in creating knowledge. LÄS MER