Sökning: "Holding time"

Visar resultat 21 - 25 av 120 avhandlingar innehållade orden Holding time.

1. 21. Sustainable Aluminum and Iron Production

   Författare :Reza Beheshti; Emma Strömberg; Jafar Safarian; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Sustainability; Optimization; Black Dross; Salt removal; Steel flux agent; Waste processing; Greenhouse gases; Direct reduction; COMSOL Multiphysics®; Kemi; Chemistry;

   Sammanfattning : Aluminium recycling requires 95% less energy than primary production with no loss of quality. The Black Dross (BD) produced during secondary aluminium production contains high amounts of water-soluble compounds, therefore it is considered as a toxic waste. LÄS MER

3. 22. Distribution and Differences : Stratification and the System of Reproduction in a Swedish Peasant Community 1620-1820

   Författare :Jonas Lindström; Maria Ågren; Jan Lindegren; Carl-Johan Gadd; Uppsala universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; Peasant; stratification; inequality; reproduction; resources; distribution; social mobility; household; family; community; landholding; principles; conditions; social structure; feudalism; early modern period; Björskog; Sweden; agrarian history; social history; History; Historia;

   Sammanfattning : This dissertation examines the character, conditions and change of peasant stratification in early modern Sweden. Wherever and whenever one looks, one finds that resources were unevenly spread among peasant households. In the literature, there are different, and conflicting, views compatible with this finding. LÄS MER

4. 23. High value at low cost : Methods for supply chain efficiency

   Författare :Martin Holmbom; Illaria Giannoccaro; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industriell logistik; Industrial Logistics;

   Sammanfattning : This thesis deals with four areas of research: Economic lot scheduling problems (ELSP), Order quantities in a production line, Economic remanufacturing problems, and Performance-based logistics (PBL).The overall purpose of this thesis is to explore and develop methods to increase efficiency insupply chains. LÄS MER

5. 24. Multi-Robot Motion Planning Optimisation for Handling Sheet Metal Parts

   Författare :Emile Glorieux; Bengt Lennartson; Fredrik Danielsson; Bo Svensson; Högskolan Väst; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Multi-robot systems; motion planning; modelling and simulation; optimisation; Production Technology; Produktionsteknik; Manufacturing and materials engineering; Produktions- och materialteknik;

   Sammanfattning : Motion planning for robot operations is concerned with path planning and trajectory generation. In multi-robot systems, i.e. with multiple robots operating simultaneously in a shared workspace, the motion planning also needs to coordinate the robots' motions to avoid collisions between them. LÄS MER

7. 25. Water resistance of Scots pine joints produced by linear friction welding

   Författare :Mojgan Vaziri; Lars-Olof Nilsson; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wood; wood welding; crack; CT scanning; image processing; MRI; microdensitometry; CPMAS C NMR; density; water absorption; tensile-shear strength; Träteknik; Wood Technology;

   Sammanfattning : Wood welding is a mechanical friction process allowing the assembly of timber without any adhesives. The process consists of applying mechanical friction, under pressure, alternately to the two wood surfaces to be welded. LÄS MER