Search for dissertations about: "harsh atmosphere"

Showing result 1 - 5 of 9 swedish dissertations containing the words harsh atmosphere.

  2. 1. Measurement of temperature and burning-rate in solid fuel combustors by fiber-optical techniques

    Author : Dan Ericsson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fiber-optic; blackbody; open-end; response-time; harsh atmosphere; hydroxyl-terminated; polybutadiene; solid-fuel ram-jet; temperature; burning-rate;

    Abstract : .... READ MORE

  4. 2. Tundra meets atmosphere : Seasonal dynamics of trace gas exchange in the High Arctic

    Author : Norbert Pirk; Institutionen för naturgeografi och ekosystemvetenskap; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Arctic; tundra; methane; carbon dioxide;

    Abstract : Arctic environments have experienced strong warming in recent decades, which is affecting the carbon cycle of tundra ecosystems.Degrading permafrost, diminishing snow cover, and changing hydrology are examples of ongoing processes that affect the land-atmosphere interactions and seasonal ecosystem dynamics. READ MORE

  5. 3. Surface Stabilization and Electrochemical Properties from a Theoretical Perspective

    Author : Daniel Petrini; Karin Larsson; Jan-Otto Carlsson; Martin Stutzmann; Uppsala universitet; []
    Keywords : Inorganic chemistry; DFT; Diamond; High surface conductivity; Surface reactivity; c-BN; Oorganisk kemi;

    Abstract : Diamond and cubic boron nitride surfaces have extreme properties that can be exploited in novel tribological, electrochemical and electronic applications. Normally insulating diamond surfaces can exhibit high surface conductivities due to hydrogen termination and the nature of the surrounding atmosphere. READ MORE

  6. 4. Growth and Heat Treatment Studies of Al-Cr-O and Al-Cr-O-N Thin Films

    Author : Ali Khatibi; Lars Hultman; Per Eklund; Marcus Morstein; Linköpings universitet; []
    Keywords : ;

    Abstract : Aluminum oxide based thin films are applied on cutting tool inserts as a top layer to protect the underlying nitride or carbide functional layer from the harsh working environment in terms of abrasive and chemical wear under thermal and pressure load. This Thesis explores the synthesis and characterization of the next generations of multifunctional wear-resistant thin film coatings in the form of Al-Cr-O and Al-Cr-O-N compounds. READ MORE

  7. 5. Refractory corrosion in biomass gasification

    Author : Markus Carlborg; Rainer Backman; Dan Boström; Ragnhild Aune; Umeå universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Refractory corrosion; slag; biomass; gasification; Materials Science; materialvetenskap;

    Abstract : To stop the net emission of CO2 to the atmosphere, we need to reduce our dependency of fossil fuels. Although a switch to a bio-based feedstock hardly can replace the total amount of fossils used today, utilization of biomass does still have a role in a future in combination with other techniques. READ MORE