Sökning: "Polarity"

Visar resultat 21 - 25 av 218 avhandlingar innehållade ordet Polarity.

  1. 21. Optical Levitation of Charged Droplets

    Författare :Oscar Isaksson; Chalmers tekniska högskola; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; water; Optical manipulation; neutralization; Radiation Pressure; demonstration; Millikan Oil Drop experiment; evaporation;

    Sammanfattning : The development of an experimental system used to investigate charged droplets is presented. The experimental setup combines optical levitation with Millikan's classical oil drop experiment and has also been used as a mean to demonstrate fundamental physical phenomena. LÄS MER

  3. 22. Sample Preparation of Organic Compounds in Environmental Analysis using Liquid Membrane Extraction

    Författare :Luke Chimuka; Kemiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; reverse phase liquid chromatography; octanol-water partition coefficients; phenolic compounds; s-triazines; supported-liquid membrane extraction; environmental analysis; UV detection; Analytical chemistry; Analytisk kemi;

    Sammanfattning : This thesis demonstrates the potential of the liquid membrane extraction technique as an alternative method for the analysis of trace ionisable organic compounds in the environment. Liquid membrane based extraction methods for the analysis of s-triazine herbicides and phenolic compounds were developed. LÄS MER

  4. 23. Polar Growth in Streptomyces venezuelae

    Författare :Markus Fröjd; Molekylär cellbiologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Cell polarity is an ubiquitous and important phenomenon relevant for a plethora of cellular functions. One type of cell polarity is polar growth, where an organism only synthesizes cell envelope at designated locations in the cell. This requires highly organized localization of cellular activities. LÄS MER

  5. 24. Regulation of cell differentiation and invasion by members of the TGFß family

    Författare :Kalliopi Tzavlaki; Aristidis Moustakas; Carl-Henrik Heldin; Laia Caja; Staffan Johansson; Gareth Inman; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TGFβ; BMP; LKB1; signal transduction; cancer; Medicinsk vetenskap; Medical Science;

    Sammanfattning : Transforming growth factor β (TGFβ) and bone morphogenetic protein (BMP) signaling pathways are important in embryonic development and tissue homeostasis, but also have complex roles in the context of cancer. TGFβ promotes epithelial to mesenchymal transition (EMT) a physiological developmental process, often hijacked in different types of cancer, eventually leading to cancer cell invasion and metastasis. LÄS MER

  7. 25. Systems microscopy analysis of cell migration

    Författare :Hamdah Shafqat Abbasi; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Single cell migration is heterogeneous and a complicated process. It arises from a hugely complex network of multi-scale interactions between molecular and macromolecular entities. LÄS MER