Sökning: "ackumulering"

Visar resultat 1 - 5 av 41 avhandlingar innehållade ordet ackumulering.

  1. 1. Silicon cycling in the Baltic Sea : Trends and budget of dissolved silica

    Författare :Liana Papush; Åsa Danielsson; Lars Rahm; Petra Tallberg; Linköpings universitet; []
    Nyckelord :Dissolved silica; trends; nutrient; nutrient ratios; diatoms; Redfield; limitation; eutrophication; riverine load; budget; fluxes; accumulation; retention; optimisation; Baltic Sea; Löst kisel; trender; näringsämne; näringsämnens kvoter; kiselalger; Redfield; tillväxtbegränsning; övergödning; flodtillförsel; budget; flöden; ackumulering; retention; optimering; Östersjön; NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : The dissolved silicon (DSi) has a crucial role for growth of a large group of primary producers – diatoms and, hence, impact on functioning of the aquatic food web. This thesis contributes to an increased understanding of the modifications of the DSi cycling in the Baltic Sea. LÄS MER

  3. 2. En skandinavisk järnvägskontraktörs karriär i Indien 1860–1867 : ackumulering av socialt och kulturellt kapital som framgångsstrategi i en kolonial kontext

    Författare :Ingemar Gunnarsson; Gunlög Fur; Malin Lennartsson; Niels Brimnes; Linnéuniversitetet; []
    Nyckelord :HUMANIORA; HUMANITIES; railway construction; British India; colonialism; cultural capital; railway contractors; social capital; social networks; subcontractors; Historia; History;

    Sammanfattning : This study is about Joseph Samuel Frithiof Stephens (1841–1934) and how he as a Scandinavian contractor acquired an economic fortune in the colonial India. The fortune was used for the acquisition of the mill property Huseby Bruk in Småland and also contributed to the Stephens family's strategy of advancing in the then Danish bourgeois class establishment. LÄS MER

  4. 3. Controlling virulence in Yersinia pseudotuberculosis through accumulation of phosphorylated CpxR

    Författare :Edvin Thanikkal; Matthew Francis; Andrew Darwin; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Y. pseudotuberculosis; CpxA; CpxR; invasin; RovA; RovM; T3SS; virulence; transcriptional regulation; molekylärbiologi; Molecular Biology; mikrobiologi; Microbiology;

    Sammanfattning : Like many Gram-negative bacteria, the food-borne pathogen Yersinia pseudotuberculosis harbours different regulatory mechanisms to maintain an intact bacterial envelope especially during exposure to extracytoplasmic stress (ECS). The CpxA-CpxR two component regulatory system is one such ECS-responsive regulatory mechanism. LÄS MER

  5. 4. Accumulation and Composition of Gully Pot Sediments under Varying Anthropogenic Activities

    Författare :Haoyu Wei; Lian Lundy; Maria Viklander; David Butler; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Catch basin; Stormwater; Sediment; Urban runoff; Xenobiotics; Gully pot maintenance; Emerging pollutant; VA-teknik; Urban Water Engineering;

    Sammanfattning : Gully pots (GPs) are an integral urban drainage component, contributing to conveying runoff from urban surfaces and reducing the load of solids and associated contaminants entering downstream piped systems and receiving waters. Over time, the silting-up of GPs impairs their hydraulic performance, increasing the risk of GP blockage-induced flood events and reducing solids retention performance. LÄS MER

  7. 5. Spatial distribution of snow in Antarctica and other glacier studies using ground-penetrating radar

    Författare :Cecilia Richardson-Näslund; Robert W. Jacobel; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; GPR; ground-penetrating radar; radar soundings; snow accumulation; accumulation rate; spatial variability; Antarctica; Dronning Maud Land; cold surface layer; thermal regime; glacial cirques; Sweden; Antarktis; Glaciärer; Ackumulering av snö; Geography; Physical Geography; geografi med naturgeografisk inriktning;

    Sammanfattning : The overall aim of this thesis is to develop and exemplify the use of ground-penetrating radar (GPR) within the field of glaciology. The main focus is on the spatial distribution of snow in Dronning Maud Land, East Antarctica. LÄS MER