Search for dissertations about: "surface enhanced infrared"

Showing result 1 - 5 of 34 swedish dissertations containing the words surface enhanced infrared.

  2. 1. Application of Chemical Additives in Minerals Beneficiation – Implications on Grinding and Flotation Performance

    Author : Vitalis Chipakwe; Saeed Chehreh Chelgani; Jan Rosenkranz; Tommy Karlkvist; Irina Chernyshova; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy; Grinding aid; Flowability; Dry grinding; FT4 Powder Rheometer; Surface properties; Rheology; Flotation; Polymers; Surface chemistry; Green Chemistry; Mineral Processing; Mineral Processing; Mineralteknik;

    Abstract : The application of chemical additives, known as grinding aids (GAs), dates to 1930 in the cement industry. Unlike the cement industry, where the use of GAs is in the final processing step, it could be one of the first processing steps in ore beneficiation. READ MORE

  4. 2. Catalysis for Lean NOx Reduction - Aspects of Catalyst Synthesis and Surface Acidity

    Author : Hanna Härelind Ingelsten; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lean NOx reduction; silica; alumina; FTIR; surface acidity; model catalysts; platinum; HZSM-5; w o microemulsion; aluminum-silicate; hydrocarbon;

    Abstract : From both economic and environmental perspectives it is desirable to reduce the consumption of fossil fuels. One route to increase the fuel efficiency for vehicles is operation in oxygen excess. However, a major problem with this technique is the lean environment, which obstructs catalytic reduction of nitrogen oxides (NOx) to harmless nitrogen. READ MORE

  5. 3. Improved titanium and steel implants : Studies on bisphosphonate, strontium and surface treatments

    Author : Paula Linderbäck; Pentti Tengvall; Per Aspenberg; Håkan Engqvist; Linköpings universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : Purpose: The general aim of this thesis was to increase the understanding of biomaterial surface modifications and local delivery of osteoporosis drugs for bone integration. We therefore (i) characterised and investigated model surface coatings for controlled drug delivery in a rat tibia screw model (ii) elucidated the effect of surface treatment for activation of complement system in vitro. READ MORE

  6. 4. Surface characterization and manipulation of polyampholytic hydrogel coatings

    Author : Feng-I Tai; Thomas Ederth; Bo Liedberg; Lei Ye; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Hydrogels; antifouling; charge-balanced material; polyampholytes; force measurements; polymer swelling; protein adsorption; patterning; plasmonics;

    Abstract : This thesis is dedicated to building up fundamental knowledge about polyampholytic hydrogels, which are developed in our group for anti-fouling purposes. Charge-balanced polymers, where positive and negative charges balance each other, have emerged as interesting candidates for many applications in materials science. READ MORE

  7. 5. Atmospheric corrosion of copper and copper-based alloys in architecture : from native surface oxides to fully developed patinas

    Author : Tingru Chang; Inger Odnevall Wallinder; Tomas Prošek; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical Engineering; Kemiteknik;

    Abstract : Copper and copper-based alloys are commonly used in both ancient and modern architecture. This requires an in-depth fundamental and applied understanding on their atmospheric corrosion behavior at different climatic, environmental and pollutant levels and how these parameters influence e.g. READ MORE