Search for dissertations about: "SOLID WATER"

Showing result 21 - 25 of 448 swedish dissertations containing the words SOLID WATER.

  1. 21. Unraveling the importance of solid and adsorbed phase mercury speciation for methylmercury formation, evasion and bioaccumulation

    University dissertation from Umeå : Umeå Universitet

    Author : Sofi Jonsson; Umeå universitet.; [2013]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; mercury; methylmercury; aquatic systems; estuary; Hg; MeHg; bioaccumulation; methylation; demethylation; evasion; sediment; water; terrestrial sources; atmospheric sources; climate change; eutrophication;

    Abstract : Monomethylmercury, MeHg, is formed under anoxic conditions in waters, sediments and soils and then bioaccumulated and biomagnified in aquatic food webs, negatively effecting both human and wildlife health. It is generally accepted that precipitation of mercury, Hg, and adsorption of Hg to e.g. READ MORE

  2. 22. Improved Molecular Understanding of Lipid-Based Formulations for Enabling Oral Delivery of Poorly Water-Soluble Drugs

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Linda C. Alskär; Uppsala universitet.; [2018]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; lipid-based formulation; poorly water-soluble drug; solubility prediction; molecular properties; lipid digestion; precipitation; solid state; intestinal solubilization; in vitro in vivo correlation IVIVC ; coadministration; Farmaceutisk vetenskap; Pharmaceutical Science;

    Abstract : The majority of emerging drug candidates are not suited for conventional oral dosage forms, as they do not dissolve in the aqueous environment of the gastrointestinal (GI) tract. Consequently, a large number of enabling formulation strategies have emerged. READ MORE

  3. 23. Molecular Mechanisms Influencing the Performance of Amorphous Formulations for Poorly Water-Soluble Drugs

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Khadijah Edueng; Uppsala universitet.; [2019]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Amorphous formulation; crystallisation; supersaturation; glass-forming ability; physical stability; glass stability; spray-dried solid dispersion; dissolution; promiscuous glass former; poorly-soluble drug; solid-to-solid; solution-mediated; particle-associated; Farmaceutisk vetenskap; Pharmaceutical Science;

    Abstract : Crystallisation is a concern for amorphous formulation because it compromises the solubility-enhancing benefit gained from amorphisation. Traditionally, amorphous formulation had been designed primarily based on trial-and-error approach. READ MORE

  4. 24. Continuum modeling of the coupled transport of mass, energy, and momentum in paperboard

    University dissertation from Department of Construction Sciences, Lund University

    Author : Henrik Askfelt; Lund University.; Lunds universitet.; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Paperboard; Mixture theory; Porous media; Large strains;

    Abstract : This thesis investigates the coupling between moisture, heat, and deformation in paperboard. The presented investigations are primarily conducted via macroscale continuum modeling but experimental characterisations are also made. READ MORE

  5. 25. On the chemical and processing stability of pharmaceutical solids Solid form dependent water presenting capacity and process induced solid form transformation

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Mina Heidarian Höckerfelt; Uppsala universitet.; [2015]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Abstract : There is a need for improving our knowledge and understanding about formation mechanisms and nature of amorphous state in order to prevent the unintended presence of disorder in solid pharmaceutical products and reduce the related stability issues. The suggested theory that water binding capacity of amorphous cellulose affects the chemical stability of hydrolysis sensitive drugs in formulations with cellulose based excipients needs a clarification and water-cellulose interaction profiles need to be examined. READ MORE