Sökning: "contacts"

Visar resultat 1 - 5 av 867 avhandlingar innehållade ordet contacts.

1. 1. Contacts and Trade at Late Bronze Age Hazor : Aspects of Intercultural Relationships and Identity in the Eastern Mediterranean

   Författare :Kristina Josephson Hesse; Thomas B. Larsson; Amnon Ben-Tor; Bozena Werbart; Magnus Ottosson; Umeå universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; Hazor; Canaan; Eastern Mediterranean; Late Bronze Age; contacts; trade; temple architecture; Mycenaean pottery; Cypriote pottery; interregional interaction networks; emulation; peer polity interaction; centre-periphery approach; Archaeology; Non-European; Arkeologi; utomeuropeisk; Archaeology; Arkeologi; Archaeology;

   Sammanfattning : Hazor’s role in an international Late Bronze Age context has long been indicated but never thoroughly investigated. This role, I believe, was more crucial than previously stressed. LÄS MER

3. 2. New insights into lubricated tribological contacts

   Författare :Elin Larsson; Staffan Jacobson; Åsa Kassman Rudolphi; Jannica Heinrichs; Philip Shipway; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Tribology; friction; wear; lubrication; fuel additive; boric acid; tribofilm; transport; fuel efficiency; surface analysis; grease; LiX grease; PP grease; fretting; electrical contacts; cross section; copper; silver; Teknisk fysik med inriktning mot tribomaterial; Engineering Science with specialization in Tribo Materials;

   Sammanfattning : The emissions of carbon dioxide, CO2, must rapidly be reduced to avoid severe climate change. Tribology-related solutions can be an important part in reducing these emissions. The aim of this thesis is to improve the fundamental knowledge in two tribology-related fields, both concerning lubrication, to enable such solutions in the future. LÄS MER

4. 3. Tribology of electrical contacts : deterioration of silver coated copper

   Författare :Åsa Kassman Rudolphi; Uppsala universitet; []
   Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

   Sammanfattning : .... LÄS MER

5. 4. Alternative back contacts for CZTS thin film solar cells

   Författare :Sven Englund; Charlotte Platzer Björkman; Jonathan J. Scragg; Levent Gütay; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CZTS; thin film solar cells; back contacts; passivation; interface; titanium nitride; ATO; antimony-doped tin oxide; transparent back contact; CZTS; tunnfilmssolceller; bakkontakter; passivering; gränsskikt; mellanskikt; titannitrid; antimondopad tennoxid; ATO; transparent bakkontakt; Teknisk fysik med inriktning mot elektronik; Engineering Science with specialization in Electronics;

   Sammanfattning : In this thesis, alternative back contacts for Cu2ZnSnS4 (CZTS) thin film solar cells were investigated. Back contacts for two different configurations were studied, namely traditional single-junction cells with opaque back contacts and transparent back contacts for possible use in either tandem or bifacial solar cell configuration. LÄS MER

7. 5. Tailoring of Contacts on Silicon Carbide - Procedures and Mechanisms

   Författare :S. A. Perez-Garcia; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; interfacial reaction; metallic contacts; Silicon carbide; silicides; XPS.;

   Sammanfattning : Silicon carbide (SiC) exhibits very good electrical, thermal, chemical and mechanical properties which make it suitable for the next generation of wide band gap electronic devices, where silicon (Si) cannot be used due to its limitations with respect to the mentioned properties. Nickel (Ni) and Tantalum (Ta) are among the metals used for the contact formation. LÄS MER