Sökning: "driving pressure"

Visar resultat 16 - 20 av 142 avhandlingar innehållade orden driving pressure.

  1. 16. A History under Siege : Intensive Agriculture in the Mbulu Highlands, Tanzania, 19th Century to the Present

    Författare :Lowe Börjeson; Mats Widgren; Yusufu Lawi; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Landscape; Environmental history; Geography; Land use change; Population pressure; Incremental change; Landesque capital; Self-reinforcing processes; Detailed mapping; Participatory mapping; Oral history; Farming practices; Aerial photographs; Landscape photographs; Iraqw; Human geography; Kulturgeografi;

    Sammanfattning : This doctoral thesis examines the history of the Iraqw’ar Da/aw area in the Mbulu Highlands of northern Tanzania. Since the late nineteenth century this area has been known for its intensive cultivation, and referred to as an “island” within a matrix of less intensive land use. LÄS MER

  3. 17. Acoustic, Thermal and Non-thermal Dynamics in Condensed Matter Studied by Time-Resolved X-ray Diffraction

    Författare :Carl Ekström; Atomfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; X-ray diffraction; Time-resolved; Ultrafast; Non-thermal melting; Thermal conductivity; Pressure wave; Opto-acoustic transducer; Fysicumarkivet A:2020:Ekström;

    Sammanfattning : The method of using short laser and X-ray pulses to investigate dynamics in materials (pump-probe) has been used for several decades. This thesis presents work that was carried out using these sources of light to reveal acoustic, thermal and non-thermal dynamics. LÄS MER

  4. 18. Cardiovascular fluid dynamics : methods for flow and pressure field analysis from magnetic resonance imaging

    Författare :Tino Ebbers; Håkan Arheden; Linköpings universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : Cardiovascular blood flow is highly complex and incompletely understood. Blood flow patterns are expected to influence the opening and closing of normal and prosthetic heart valves, the efficiency of cardiac filling and ejection, and the resistance to thrombus formation within the heart. LÄS MER

  5. 19. Recent transitions in Ethiopian homegarden agroforestry : driving forces and changing gender relations

    Författare :Mersha Sahilu; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Homegarden agroforestry was a dominant land use practice in Southern Nations, Nationalities and People's Regional State (SNNPRS) Ethiopia until the 1990s. It has been known for its diversity, ecosystem balance and sustainability. LÄS MER

  7. 20. Haemodynamic management in liver surgery

    Författare :Lena Sand; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; liver resection; nitroglycerine; central venous pressure; vasopressin; patient position; PEEP;

    Sammanfattning : Background: Liver resection surgery is a potentially curative treatment for liver tumours. The liver is a highly vascular organ, and substantial intra-operative blood loss is common. Increased blood loss negatively impacts both postoperative outcome and long-term survival. LÄS MER