Sökning: "L David"

Visar resultat 1 - 5 av 50 avhandlingar innehållade orden L David.

1. 1. Evolution and taxonomy of Cambrian arthropods from Greenland and Sweden

   Författare :Martin Stein; John S. Peel; Dieter Waloszek; David J. Siveter; Reinhardt M. Kristensen; David L. Bruton; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cambrian; Arthropods; Trilobites; Evolution; Greenland; Sweden; Historical geology and palaeontology; Historisk geologi och paleontologi;

   Sammanfattning : Arthropods have a rich fossil record spanning the Phanerozoic. Biomineralized forms such as the extinct trilobites are particularly common and are proven index fossils for biostratigraphy. Forms with an unmineralized cuticle are more rare, preserved only in so called konservat lagerstätten. LÄS MER

3. 2. Atom Probe Tomography of Hard Nitride and Boride Thin Films

   Författare :David L. J. Engberg; Lars Hultman; Magnus Odén; Guido Schmitz; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Atom probe tomography APT ; Ceramics; Nitrides; Borides;

   Sammanfattning : Hard ceramic thin films, including TiSiN, ZrAlN, ZrB2, and ZrTaB2, with applications for wear-resistant coatings, have been studied using atom probe tomography and correlated with several other analytical techniques, including X-ray diffraction, electron microscopy, and elastic recoil detection analysis. Outstanding obstacles for quantitative atom probe tomography of ceramic thin films have been surmounted. LÄS MER

4. 3. Process-microstructure-corrosion interrelations for stainless steel

   Författare :David Lindell; Rachel Pettersson; Rebecca L. Higginson; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; stainless steel; processing; annealing; pickling; microstructure; corrosion; anisotropy; oxyfuel; Kemi; Chemistry;

   Sammanfattning : Stainless steels were first developed in the early 20th century and have since then emerged as a very diverse class of engineering materials. Along with steels having new combinations of properties, there is a continuous development of new technologies allowing the material to be produced in a faster and more energy effcient manner. LÄS MER

5. 4. Diversity Underfoot : Systematics and Biogeography of the Dictyostelid Social Amoebae

   Författare :Allison L Perrigo; Sandra Baldauf; Maria Romeralo; David Bass; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Amoeba; biogeography; cryptic species; dictyostelid; latitudinal gradient; multicellularity; protist; social amoeba; phylogenetics; systematics; new species; Biology with specialization in Systematics; Biologi med inriktning mot systematik;

   Sammanfattning : Dictyostelids (Amoebozoa) are a group of social amoebae consisting of approximately 150 species, which are found in terrestrial habitats worldwide. They are divided into eight major clades based on molecular phylogeny, and within these clades are many species complexes. LÄS MER

7. 5. Beyond Education and Society : On the Political Life of Education for Sustainable Development

   Författare :Stefan L. Bengtsson; Leif O. Östman; David O. Kronlid; Karin Hjälmeskog; Thomas Popkewitz; Sharon Todd; Uppsala universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; education; ESD; environmental education; Education for Sustainable Development; sustainability; policy; education policy; globalisation; globalization; hegemony; discourse; space; antagonism; political; politics; temporality; beyond; mutation; rhizome; rhizomic; play; Laclau; utbildning; UHU; miljöundervisning; utbildning för hållbar utveckling; hållbar utvecking; politik; policy; utbildningspolicy; globalisering; hegemoni; diskurs; antagonism; temporalitet; mutation; rhizome; spel; Laclau; Curriculum Studies; Didaktik;

   Sammanfattning : The objective of this dissertation is to develop a theoretical and analytical framework for understanding the political in education from a social and global perspective. With this objective in mind, it employs an empirical engagement and theoretical reflection on how this political can be seen to emerge in policy making on Education for Sustainable Development (ESD). LÄS MER