Sökning: "Clean technology"

Visar resultat 16 - 20 av 313 avhandlingar innehållade orden Clean technology.

1. 16. Understanding the Clean Development Mechanism and its dual aims : the case of China's projects

   Författare :Qie Sun; Ronald Wennersten; Nils Brandt; Magnus Enell; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Clean development mechanism CDM ; Climate change mitigation; Kyoto Protocol; Sustainable Development; China’s mitigation strategy; Cost benefit analysis CBA ; co-benefits; Multi-criteria analysis MCA ; Analytic Hierarchy Process AHP ; Environmental engineering; Miljöteknik; SRA - Energy; SRA - Energi;

   Sammanfattning : Having been running for over 10 years, the Clean Development Mechanism (CDM) is considered an innovative and successful mitigation initiative. CDM has the dual aims of helping industrialised countries achieve compliance with their emission limitation and reduction commitments in a cost-effective way, while simultaneously assisting developing countries in sustainable development. LÄS MER

3. 17. Laser cleaning as a conservation technique for corroded metal artifacts

   Författare :Yang Sook Koh; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Produktionsutveckling; Manufacturing Systems Engineering;

   Sammanfattning : Preservation of cultural property for the future is one of the most important activities of our society. The information which we can gather from such materials is a valuable key to understanding the past. Conservation is a process which includes a range of different treatments. LÄS MER

4. 18. Phenomena in wire based multi-layer laser welding and hybrid deposition

   Författare :Jonas Näsström; Alexander Kaplan; Frank Brueckner; Sven Bengtsson; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Produktionsutveckling; Manufacturing Systems Engineering;

   Sammanfattning : Several laser materials processing technologies using metal wire addition have been researched during the last decades. Especially in the field of joining, as well as in the field of Additive Manufacturing (AM), multiple major benefits have been reached, e.g. higher welding speeds and lower heat input. LÄS MER

5. 19. Weld Pool Simulations

   Författare :Marcus Edstorp; Högskolan Väst; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Arc Welding; Weld Pool; Multiphysics Simulations; Moving Boundaries; Free Surfaces; Mesh Motion; Two-Phase Flow; Incompressible Flow; Electromagnetics; Finite Element Methods; Applied mathematics; Tillämpad matematik; Manufacturing engineering; Produktionsteknik; Manufacturing and materials engineering; Produktions- och materialteknik; Arc Welding; Weld Pool; Multiphysics Simulations; Moving Boundaries; Free Surfaces; Mesh Motion; Two-Phase Flow; Incompressible Flow; Electromagnetics; Finite Element Methods;

   Sammanfattning : This investigation is devoted to the study of welding and its effect on the workpiece, focusing on the thermo and fluid dynamical phenomena occuring during a autogenous or nonautogenous arc fusion welding process. Its aim is to simulate the behaviour of the weld pool and analyze the consequence of the solid-liquid phase change, thus obtaining a methodology for predicting the appearance of weld defects related to solidification and cooling. LÄS MER

7. 20. First Principles Modelling of Clean Energy Materials

   Författare :Pjotrs Žguns; Natalia Skorodumova; Andrei Ruban; Susanne Mirbt; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; DFT; energy; catalysis; ionic conductors; SOFC; adatom charging; anharmonicity; configurational energy; Materials Science and Engineering; Teknisk materialvetenskap;

   Sammanfattning : This licentiate thesis presents the density functional theory study on clean energy materials relevant for catalysis applications, and for solid oxide fuel cells.In the first part of the thesis the metal supported ultrathin films, namely ScN/Mo, MgO/Mo and NaF/Mo are considered, and the Cu atom adsorption and charging on them is explored. LÄS MER