Sökning: "active transport"

Visar resultat 41 - 45 av 440 avhandlingar innehållade orden active transport.

  1. 41. Characterization of membrane protein active transport under native-like conditions

    Författare :Harsha Ravishankar; Magnus Andersson; Pål Stenmark; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biological Physics; Biologisk fysik;

    Sammanfattning : P-type ATPase proteins are a family of membrane proteins that maintain concentration gradients of e.g. ions by ATP-driven transport across the membrane. While these transporters share many features in their molecular architecture, structural differences are required to convey ion specificity. LÄS MER

  3. 42. Sources, transport and fate of perfluoroalkyl acids in the atmosphere

    Författare :Jana Johansson; Ian Cousins; Tom Harner; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Perfluorinated alkyl acids; PFOS; PFOA; Isomers; Sources; Atmospheric transport; Sea spray; Gas-particle partitioning; Volatilisation; Applied Environmental Science; tillämpad miljövetenskap;

    Sammanfattning : Perfluoroalkyl acids (PFAAs) are man-made chemicals which have been observed in the global environment, even in locations far away from where they are emitted. These persistent substances are taken up in humans and biota and may have toxic effects. LÄS MER

  4. 43. Improving the Efficiency of Public Procurement : Empirical evidence using micro-level contract data

    Författare :Ivan Ridderstedt; Hans Lööf; Jan-Eric Nilsson; Kristofer Odolinski; Sofia Lundberg; KTH; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Public procurement; public sector efficiency; auction design; award mechanisms; bundling; transport infrastructure; public transport; Nationalekonomi; Economics;

    Sammanfattning : Among OECD countries, close to one-third of government expenditure is allocated using public procurement. This implies that the skill of public authorities in handling the procurement format has a significant impact on how much the public sector accomplish in relation to their goals and responsibilities. LÄS MER

  5. 44. Interrogating Diffusional Mass and Charge Transport in Catalytic Metal-Organic Frameworks

    Författare :Ben A. Johnson; Sascha Ott; Nicolas Plumeré; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; metal-organic frameworks; molecular catalysis; reaction-diffusion; electrochemistry; water oxidation; charge transport;

    Sammanfattning : Molecular catalysts are efficient and selective for the electrochemical conversion of small molecules for energy conversion. Application of molecular species in a large-scale industrial setting requires stabilization in a heterogeneous support material. LÄS MER

  7. 45. Improved health economic assessments of sustainable transport solutions in urban environments

    Författare :Hedi Katre Kriit; Johan Nilsson Sommar; Joacim Rocklöv; Martin Andersson; Joel Schwartz; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; active commuting; electric vehicles; air pollution; particle matter; physical activity; morbidity; mortality; health economic evaluation; epidemiologi; Epidemiology; Public health; folkhälsa; sustainable development; hållbar utveckling;

    Sammanfattning : Introduction: Part of the European Strategy to achieve climate neutrality in the transport sector is to increase the proportion of electric vehicles (EVs) and active commuting. Health co-benefits from reduced air pollution and increased active commuting are assumed to follow; however, all dimensions of expected health effects are not quantified nor valued monetarily. LÄS MER