Sökning: "diffraction"

Visar resultat 26 - 30 av 1039 avhandlingar innehållade ordet diffraction.

1. 26. Crystal Chemistry of the Ti3Sn-D, Nb4MSi-D and Pd-Ni-P Systems

   Författare :Marie Vennström; Yvonne Andersson; Gudrun Auffermann; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Inorganic chemistry; metal hydride; energy carrier; crystal structure; diffraction; transition metal phosphide; Oorganisk kemi; Inorganic chemistry; Oorganisk kemi; Inorganic Chemistry; Oorganisk kemi;

   Sammanfattning : Future energy systems based on hydrogen as energy carrier require reliable ways for storing hydrogen gas in safe, clean and efficient ways. Metal hydrides absorb hydrogen gas reversibly, making them suitable for storage applications. LÄS MER

3. 27. Cutting Through Water : Towards a Posthuman Theory of Educational Relationality

   Författare :Simon Ceder; Pedagogik; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; diffraction; educational relationality; humanism; intra-relationality; posthumanism;

   Sammanfattning : Based on an ongoing debate—academic as well as public—regarding the roles of the teacher and the student in education, this thesis explores educational relations within the field of philosophy of education. After critically examining intersubjective approaches to theories of educational relations, I localize anthropocentrism and subject-centrism (teacher/student) as two problematic aspects of the aforementioned approaches. LÄS MER

4. 28. Magnetic Materials for Cool Applications : Relations between Structure and Magnetism in Rare Earth Free Alloys

   Författare :Johan Cedervall; Martin Sahlberg; Paul Henry; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Magnetism; Diffraction; X-ray scattering; Neutron Scattering; Permanent magnets; Magnetocalorics; Chemistry with specialization in Inorganic Chemistry; Kemi med inriktning mot oorganisk kemi;

   Sammanfattning : New and more efficient magnetic materials for energy applications are a big necessity for sustainable future. Whether the application is energy conversion or refrigeration, materials based on sustainable elements should be used, which discards all rare earth elements. LÄS MER

5. 29. Noise from wind turbines

   Författare :Olivier Fégeant; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; masking; vibration transmission; diffraction; ambient noise; pseudo-noise; cylindrical shell. Perturbation methods; structural mobility; axoustic outdoor measurement; Building engineering; Byggnadsteknik;

   Sammanfattning : A rapid growth of installed wind power capacity is expectedin the next few years. However, the siting of wind turbines ona large scale raises concerns about their environmental impact,notably with respect to noise. LÄS MER

7. 30. Nanoscaled Structures in Ruthenium Dioxide Coatings

   Författare :Christine Malmgren; Håkan Olin; Joakim Bäckström; Mittuniversitetet; []
   Nyckelord :Bleaching chemicals; sodium chlorate; ruthenium dioxide; electrodes; crystallites; nanowires; microscopy; diffraction; electrocatalytic area; reduced energy consumption; NATURAL SCIENCES; NATURVETENSKAP;

   Sammanfattning : An essential ingredient in the generation of environmentally compatible pulp bleaching chemicals is sodium chlorate. Chlorate is produced in electrochemical cells, where the electrodes are the key components. In Sweden the so-called DSA !R electrodes with catalytic coatings have been produced for more than 35 years. LÄS MER