Essays about: "Ballast water"
Showing result 1 - 5 of 22 essays containing the words Ballast water.
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1. Monitoring marine alien and invasive species. A comparison between the traditional method (eRAS) and DNA-based identification of species.
University essay from Göteborgs universitet / Institutionen för biologi och miljövetenskapAbstract : There is a major concern with the uncontrolled spreading of alien and invasive species, caused by an increase in travelling by boat globally. These are dispersed via ballast water, by fouling on ships and in fishing gear. READ MORE
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2. Användning av krävande ballastmaterial vid betongtillverkning - En laborativ utvärdering av absorptionshämmande tillsatsmedel för att möjliggöra användning av glimmerrik bergkross och återvunnen betong som ballast
University essay from Lunds universitet/Avdelningen för ByggnadsmaterialAbstract : Detta examensarbete utvärderar ett absorptionshämmande tillsatsmedel för att möjliggöra användningen av krävande ballast vid betongtillverkning. Den huvudsakliga anledningen till att ballasten benämns som krävande är att den har ovanligt hög absorptionsförmåga. READ MORE
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3. The Great cormorant, Phalacrocorax carbo, as a predator of the invasive Round goby
University essay from SLU/Dept. Of Aquatic ResourcesAbstract : Dispersal of invasive species poses a significant threat to biodiversity loss globally and is one of the major threats to the ecological condition in the Baltic Sea. The Baltic Sea is facing potential problems caused by the Round goby, Neogobius melanostomus, which was presumably introduced via ballast water. READ MORE
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4. Use of Polyvinyl chloride (PVC) as an aggregate for concrete
University essay from Högskolan i Borås/Akademin för textil, teknik och ekonomiAbstract : This study investigates the use of polyvinyl chloride (PVC) as a partial substitute of natural aggregates in concrete as fine and coarse aggregates. Concrete was prepared by replacing natural aggregates with equal volume of grinded PVC, with volume replacement ratio as 10%, 50% for fine and then 10% and 50% for coarse aggregates. READ MORE
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5. Long-term deformation of balanced cantilever bridges due to non-uniform creep and shrinkage
University essay from KTH/BetongbyggnadAbstract : Balanced cantilever bridges have historically experienced excessive deformations. Previous researchsuggeststhat the cause may be due to differential thickness in the box girder cross-section and underestimation of creep and shrinkage. READ MORE