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Aaltodoc Publication Archive
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7637 Publications
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  • Micro and nanofibrillated cellulose (MNFC) as additive in complex suspensions: influence on rheology and dewatering

    The traditional forest products, such as paper, packaging and viscose products, have their well-established place, but further efforts urgently need to be made to meet growing ecological demands, increasing economic pressure and to develop new technologies for utilisation of high performance materials. Nanocellulose applied in paper making suspensions and as water retention control aids may introduce additional strength properties in traditional products, and when considered for coatings may ...

    Imaging the real shape of nanoclusters in scanning force microscopy

    A quantitative comparison between experiment and theory is given for the constant height mode imaging of metal nanoclusters in dynamic scanning force microscopy. We explain the fundamental mechanisms in the contrast formation with the help of the system Pd/MgO(001). The comparison shows that the shape and size of nanoclusters are precisely imaged due to the sharpness of the tip’s last nanometer. This quantitative comparison proves our previously proposed model for the contrast formation. P...

    Speech Motor System Mediates Phonetic Categorization

    Phonemes, the elementary units of speech, greatly vary in their acoustic structure when produced by different speakers in different contexts. The listener's brain therefore faces a fundamental challenge of mapping highly variable acoustic signals to discrete phonetic categories. Whether the speech motor system, primarily engaged in speech production, is involved in solving this perceptual categorization challenge is still under debate. This thesis investigated the influence that the speech...

    Dust in ventilation ducts : accumulation, measurement and removal

    This thesis focuses on dust accumulation in, and removal from, recently installed supply air ducts and on the bristle behaviour of rotating duct cleaning brushes. The results of dust accumulation, measured using three different methods, were compared and the amount of dust in newly installed air ducts was evaluated. The vacuum test was found to be an efficient method of collecting dust samples on the duct surface. The vacuum test and the gravimetric tape method gave approximately the same res...

    Rehtori Eero O. Kasasen lukuvuoden 2009-2010 avajaispuhe

    Helsingin kauppakorkeakoulun, Taideteollisen korkeakoulun ja Teknillisen korkeakoulun yhteiset lukuvuoden 2009–2010 avajaiset 1.9.2009AvajaispuheRehtori Eero KasanenHelsingin kauppakorkeakoulu
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