Sökning: "brackish"

Visar resultat 31 - 35 av 89 avhandlingar innehållade ordet brackish.

  1. 31. Tensile fracture of ice : test methods and fracture mechanics analysis

    Författare :Lars Stehn; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Structural Engineering; Konstruktionsteknik;

    Sammanfattning : This thesis is concerned with several aspects of fracture of both brackish (low salinity) sea ice and freshwater ice. The tests and analyses are confined to tensile, or in fracture mechanics language, Mode I, fracture. LÄS MER

  3. 32. The role of allelopathy in microbial food webs

    Författare :Astrid Weissbach; Catherine Legrand; Ellen Van Donk; Linnéuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Microbial food web; Allelopathy; Alexandrium tamarense; Prymnesium parvum; Infochemicals; marine plankton community; Freshwater ecology; Limnisk ekologi; Akvatisk ekologi; Aquatic Ecology;

    Sammanfattning : Phytoplankton produce allelochemicals; excreted chemical substances that are affecting other microorganisms in their direct environment.In my thesis, I investigated strain specific variability in the expression of allelochemicals of the harmful flagellate Prymnesium parvum, that is euryhaline but mainly bloom forming in brackish water. LÄS MER

  4. 33. Towards a sustainable tilapia breeding program in Tanzania

    Författare :Redempta Athanas Kajungiro; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : A structured breeding program is an important step towards sustainable tilapia aquaculture in Tanzania. The aim of the thesis was to generate baseline information for the establishment of tilapia breeding program in Tanzania. LÄS MER

  5. 34. Urbanism Under Sail : An Archaeology of Fluit Ships in Early Modern Everyday Life

    Författare :Niklas Eriksson; Johan Rönnby; Anders Andrén; Jonas Nordin; Södertörns högskola; []
    Nyckelord :HUMANIORA; HUMANITIES; Seventeenth century; Urbanism; Shipwrecks; Historical; Historical Studies; Historiska studier; Östersjö- och Östeuropaforskning; Baltic and East European studies;

    Sammanfattning : In the seventeenth- and early eighteenth centuries, fluits were the most common type of merchant ship used in Baltic trade. Originally a Dutch design, the majority of all goods transported between Sweden and the Republic was carried on board such vessels. Far from all voyages reached their destination. LÄS MER

  7. 35. Manganese cycling in the Baltic Sea over the last ~8000 years: the influence of redox conditions on mineral formation and burial

    Författare :Conny Lenz; Kvartärgeologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Baltic Sea; sediments; hypoxia; redox conditions; manganese;

    Sammanfattning : The Baltic Sea is one of the largest brackish water bodies in the world and is suffering extensive environmental issues caused by eutrophication and warming climate. A halocline in the water column divides more saline bottom water fed by inflows through the narrow connection with the North Sea from the surface waters and inhibiting exchange of oxygen between the two water masses. LÄS MER