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E-LIB Dokumentserver - Staats und Universitätsbibliothek Bremen
Institutional Repository
2544 Publications
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  • Plastifying marine microhabitats -exploring biogeochemical processes in microscale

    Vamvakopoulos, Kyriakos (2011)
    It is essential for understanding biogeochemical processes in sediments to work with virtually undisturbed samples in scales as small as possible, ideally to those scales where the processes take place. To maintain spatial structure and study microorganisms and mineral constituents in high resolution sediment samples were plastified with Glycolmethacrylate (GMA), a water permeable polyester. Special efforts were paid to minimize changes in biological, chemical and physical disturbance during ...

    Cellular inorganic carbon fluxes in the coccolithophore Emiliania huxleyi and its relevance for marine carbon cycling.

    Schulz, Kai (2006)
    This thesis investigates several processes relevant for carboncycling on various time scales.The publications deal with processes on time scales ofmillions of years (climate change in the Pleistocene), hundreds andtens of thousands of years (impact of calcification on atmospheric CO2 atglacial/interglacial change), hours to minutes (CCM activity ofphytoplankton) to seconds and micro seconds (kinetics in the carbonate system).

    Methane Oxidation and Carbon Assimilation in Marine Sediments

    Wegener, Gunter (2008)
    Anaerobic oxidation of methane (AOM) performed by consortia of methanotrophic archaea (ANME) and sulfate reducing bacteria (SRB) is the major sink of methane in marine sediments. This thesis describes methane consumption at two of the most active North Sea cold seeps (Gullfaks, Tommeliten), their microbial community and the resulting lipid biomarker patterns. Experiments in flow-through setups are presented, focusing on physiological parameters of AOM activity such as different methane and su...

    Prozesssimulation der Bauteil-Abschreckung in flüssigen Medien: Zur Analyse des mehrphasigen Strömungs- und Wärmetransports in Siedeprozessen

    Stark, Paul (2013)
    The quenching process during heat treatment of steel parts is significantly influenced by boiling phenomena. At wall temperatures above the liquid boiling point, the vapour formation and the interaction of the vapour phase with the liquid flow field is determining the local cooling conditions of the workpiece. High temperature gradients can result in an inhomogeneous distribution of the final material properties (e.g. hardness). A multiphase flow and heat transfer model is utilized to simulat...

    TechSportiv. Technologiekonstruktion : Ein "Gegenstand-mit-dem-man-denkt" für menschliche Bewegung

    Dittert, Nadine (2015)
    This thesis aims at studying the use of a computational construction kit for human body movement which is grounded in the constructionist learning approach. Therefore, a construction kit including a learning environment is developed iteratively in a participatory design process with young people. Processes, that young people undergo while using this construction kit are studied and research is conducted that aims at finding a method to approach human body movement by implementing construction...
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