Sökning: "historical gravity"

Visar resultat 1 - 5 av 10 avhandlingar innehållade orden historical gravity.

  1. 1. Den yngre järnålderns gravskick i Uppland : Framväxten av den arkeologiska bilden och en materialitet i förändring

    Författare :Jhonny Therus; Neil Price; Frands Herschend; Anders Kaliff; Alison Klevnäs; Uppsala universitet; []
    Nyckelord :Late Iron Age; Viking Age; burial practice; bridging practice; monument gravity; historical gravity; grave; memory; hǫrgr; amulet ring; cosmology; cremation; Christianization; settlement archaeology; mortuary behaviour; dispersed burial; Archaeology; Arkeologi;

    Sammanfattning : This thesis examines archaeological approaches to burials and changing mortuary practices during the Late Iron Age (c. 500-1100 AD) in central Eastern Sweden. Understanding the change in mortuary practices is fundamental to the study of the Late Iron Age. LÄS MER

  3. 2. Geometallurgical study of historical tailings from the Yxsjöberg tungsten mine in Sweden : Characterization and reprocessing options

    Författare :Jane Mulenshi; Jan Rosenkranz; Saeed Chehreh Chelgani; Pablo Brito-Parada; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Critical raw materials; Historical tailings; Tungsten; Scheelite; Geometallurgical approach; Characterization; Beneficiation; Reprocessing; Gravity separation; Magnetic separation; Flotation; Mineral Processing; Mineralteknik; Centrumbildning - Centrum för avancerad gruvteknik och metallurgi CAMM ; Centre - Centre for Advanced Mining Metallurgy CAMM ;

    Sammanfattning : Tungsten (W) is listed among the European Union (EU) critical raw materials (CRMs) for its supply risk and economic importance. Primarily, tungsten is produced from scheelite and wolframite mineral ores with 0.08-1.5% tungsten trioxide (WO3) grade. LÄS MER

  4. 3. Reprocessing historical tailings for possible remediation and recovery of critical metals and minerals : The Yxsjöberg case

    Författare :Jane Mwaba Mulenshi; Jan Rosenkranz; Saeed Chehreh Chelgani; Urs Peuker; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining waste; Historical tailings; Conceptual framework; Critical raw materials; Tungsten; Scheelite; Characterization; Mineral liberation analysis; Beneficiation; Reprocessing; Mineral Processing; Mineralteknik; Centrumbildning - Centrum för avancerad gruvteknik och metallurgi CAMM ; Centre - Centre for Advanced Mining Metallurgy CAMM ;

    Sammanfattning : With increasing consumption of primary mineral resources, the generation of mining wastes has also increased thus requiring the mining industry to address the growing environmental concerns. Waste rock and tailings are potential secondary sources of critical raw materials currently in short supply in the European Union, but also a source for environmental issues like acid mine drainage. LÄS MER

  5. 4. Bilateral shipping and trade : Swedish-Finnish experiences in the post-war period

    Författare :Lars Fredrik Andersson; Olle Krantz; Jari Ojala; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Economic history; Economic history; convergence; economic integration; trade; bilateral; intra-industrial trade; inter-industrial trade; shipping; ferry services; gravity equation; economies of scope; economies of scale; economies of density; post-war period; Ekonomisk historia; Economic history; Ekonomisk historia;

    Sammanfattning : This thesis explores the bilateral shipping and trade between Finland and Sweden during the post-war period. It comprises five articles and one introductory chapter for which the common point of departure is the growth and transformation of bilateral trade and shipping. LÄS MER

  7. 5. The origin of the marine Lockne impact structure, Jämtland

    Författare :Erik Sturkell; Christian Keoberl; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Lockne; Jämtland; Earth sciences; Geovetenskap; allmän och historisk geologi; General and Historical Geology;

    Sammanfattning : The Lockne impact structure in Jämtland (63o00'20"N, 14o49'30"E), formed in the Middle Ordovician at approximately 455 Ma. The structure is a concentric crater with a total diameter of 13.5 km. The impact took place in a marine environment. LÄS MER