Essays about: "ploughing"

Showing result 1 - 5 of 52 essays containing the word ploughing.

  1. 1. Effect of temperature on early stage adhesion during TiAlN sliding against Inconel 718 and Stainless steel 316L : High temperature tribology

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Ahsan Ali; [2023]
    Keywords : High temperature tribology; Early-stage adhesion; Adhesive wear; Friction; Wear resistant coatings; Physical vapour deposition PVD coatings; TiAlN; Tungsten carbide WC Co ; Difficult to machine super alloys; Inconel 718; Stainless steel 316L; High-performance materials; Abrasion; Oxidation; Chipping; Ploughing; Characterization;

    Abstract : High-performance materials such as stainless steels and nickel based super alloys are widely used in demanding applications where high mechanical and thermal properties are required. The applications of super alloys are mainly found in jet engines, power plants and gas turbines demanding high fatigue strength, corrosion and oxidation resistance as well as wear resistant properties. READ MORE

  3. 2. A Place of Passage : Disturbed burials and dispersed human bone remains from the Mid-Neolithic burial ground at Ajvide on Gotland

    University essay from Uppsala universitet/Institutionen för arkeologi och antik historia

    Author : Anna Sointula; [2023]
    Keywords : Secondary treatment; human bone remains; absent craniums; dispersed bone fragments; ‘skull cult’; burial rituals; CA; Middle Neolithic period; PWC; Gotland.; Sekundär behandling; mänskliga skelettrester; saknade kranier; spridda benfragment; ‘skallkult’; begravningsritual; KA; Mellanneolitikum; GRK; Gotland.;

    Abstract : The Mid-Neolithic site of Ajvide on the Baltic Island of Gotland comprises the burials of 89 individuals within 85 separate burial contexts (Österholm 2008). Some of these individuals were detected with absent skeletal elements, such as the cranium, which have been believed to be represented by the considerable number of dispersed human bone fragments discovered from the site (Burenhult 2002: 33, see also Lundén 2012). READ MORE

  4. 3. Carabids as weed seed control agent : impact of soil cultivation on carabid weed seed regulation

    University essay from SLU/Dept. of Crop Production Ecology

    Author : Ellen Dahlgren; [2023]
    Keywords : weed seed predation; weed seed bank regulation; weed seed predation strength; seed predation strength; carabid beetles; tillage; piecewise structural equation model;

    Abstract : As weed seed predators, carabid beetles can regulate the weed seed bank within agricultural fields. Little is anyhow known about how weed seed bank regulation by carabids is affected by different tillage treatments with decreasing intensity, why this was here examined. READ MORE

  5. 4. The sources and dynamics of technological change in cassava farming in Ghana

    University essay from Lunds universitet/Ekonomisk-historiska institutionen

    Author : Chekhros Kilichova; [2023]
    Keywords : Ghana; cassava; technology adoption; agricultural transformation; farm size; agricultural extension service; Business and Economics;

    Abstract : Farm size expansion in some countries in Sub-Saharan Africa, including in Ghana, is a recent phenomenon, and is indicative of the agricultural transformation process taking place in the region. Technology use and adoption level is an integral and complex part of this process, which is studied in relation to the expanding farm sizes and agricultural transformation in this study. READ MORE

  6. 5. Defining the Unidentified : An osteological re-analysis of an unmarked Late Neolithic/Early Bronze Age grave

    University essay from Uppsala universitet/Institutionen för arkeologi och antik historia

    Author : Vir Sjöberg; [2023]
    Keywords : Late Neolithic; Early Bronze Age; Gotland; re-analysis; paleopathology microarchaeology; unmarked grave; communal burial; Senneolitikum; äldre bronsålder; Gotland; återanalys; paleopatologi mikroarkeologi; flatmarksgrav; gemensam grav;

    Abstract : This thesis presents a micro-archaeological analysis of the osteological material from theunmarked communal grave L1977:6727, in Sigsarve, Gotland. The grave was found during the ploughing of a field and excavated in 1911. READ MORE