Sökning: "inre erosion"

Visar resultat 1 - 5 av 12 avhandlingar innehållade orden inre erosion.

  1. 1. Suveränitetserosion? : Om EU-rättens påverkan på nationella sociala trygghetsmodeller; särskilt Sverige

    Författare :Jaan Paju; Ulf Bernitz; Eva Edwardsson; Ulla Neergaard; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; EU Law; Social Security; Free Movement of Workers; Free Movement of Persons; Free Movement of Services; Internal Market; the Charter of Fundamental Rights; Union Citizenship; Regulation 3 58; Regulation 1408 71; Regulation 883 2004; Regulation 1612 68; Regulation 492 2011; Directive 2004 38; social trygghet; europeisk integrationsrätt; migrerande arbetstagare; inre marknaden; unionsmedborgarskap; rättighetsstadgan; tolkningsmetoder; förordning 882 2004; förordning 1408 71; förordning 3 58; europeisk integrationsrätt; European Law;

    Sammanfattning : Frågan som avhandlingen Suveränitetserosion? ställer är om den fortsatta utvecklingen ska vara för EU att lagstifta om eller om den, som den till övervägande del varit de senaste femtio åren, ska fortsätta utvecklas av EU-domstolen.Medlemsstaternasnationella sociala trygghetssystem är inte, och kan inte vara, opåverkade i ett unionsrättsligt sammanhang. LÄS MER

  3. 2. On the Assessment of Internal Erosion of Dam Cores of Glacial Till

    Författare :Hans Rönnqvist; Kaare Höeg; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Soil Mechanics; Geoteknik;

    Sammanfattning : The objective of this study is twofold; on the one hand it investigates the susceptibility to suffusion of glacial till, and, on the other, it presents approaches to evaluate internal erosion susceptibility of dams composed of this type of core soil. Concentrated leak erosion, backward erosion, contact erosion, and suffusion erosion are the mechanisms associated with the initiation of internal erosion. LÄS MER

  4. 3. Internal erosion in embankment dams : fluid flow through and deformation of porous media

    Författare :J. Gunnar I. Hellström; Thanasis D. Papathanasiou; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strömningslära; Fluid Mechanics;

    Sammanfattning : A basic understanding of fluid flow through a porous media facilitates a comprehensive understanding of internal erosion in embankment dams. Hence, it is necessary to reveal the detailed seepage flow, the flow-induced forces acting within the porous media and the fluid flow deformation of the porous media. LÄS MER

  5. 4. Recent changes in land use and productivity in agro-pastoral Inner Mongolia, China

    Författare :Sara Brogaard; LUCSUS; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; geomorphology; Physical geography; China; Inner Mongolia; remote sensing; LUE model; primary production; GPP; yield variability; land degradation; farmers’ perception; productivity; Land use; pedology; cartography; climatology; Fysisk geografi; geomorfologi; marklära; kartografi; klimatologi;

    Sammanfattning : This study challenges the prevailing assumption that the expansion of cultivated land areas and increasing number of livestock in the agro-pastoral regions of northern China have aggravated the process of land degradation since the start of the rural reforms in 1978. Land-use and productivity trends in the Inner Mongolia Autonomous Region (IMAR), with special attention to the Keerqin steppe region, have been analysed. LÄS MER

  7. 5. Land degradation and mitigation in northern China. Evaluated from the biological production

    Författare :Micael Runnström; Institutionen för naturgeografi och ekosystemvetenskap; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; marklära; geomorfologi; Fysisk geografi; climatology; kartografi; klimatologi; cartography; pedology; desertification; China; GPP; Mu Us; LUE-model; overgrazing; Physical geography; geomorphology;

    Sammanfattning : Land degradation is commonly perceived to be severe in many parts of semi arid China. The transition towards market economy since the 1978 reforms, have set marginal dry lands under added pressure in the form of increased livestock numbers and expanding cultivation on erosive soils. LÄS MER