Sökning: "pure water"

Visar resultat 1 - 5 av 250 avhandlingar innehållade orden pure water.

  1. 1. Towards Energy-Efficient Drinking Water Production using Biomimicry

    Författare :Simon Isaksson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Filter; Membrane Protein; Supported Lipid Bilayer; Drinking Water; Water Treatment; Silica; Aquaporin; Liposome; Biomimicry;

    Sammanfattning : Water is a prerequisite for life and we therefore need pure drinking water to survive. Yet there are more than half a billion people that do not have access to pure drinking water. Water treatment can be performed in many different ways, one of the most commonly used being filtration. LÄS MER

  3. 2. X-Ray Investigations of the Liquid-Liquid Critical Point Hypothesis in Supercooled Water

    Författare :Alexander Späh; Anders Nilsson; Martin Meedom Nielsen; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; water; supercooled water; x-ray scattering; free electron x-ray laser; liquid-liquid phase transition; liquid-liquid critical point; x-ray speckle visibility spectroscopy; kemisk fysik; Chemical Physics;

    Sammanfattning : This thesis presents experimental x-ray scattering studies on supercooled liquid water. A liquid-liquid transition between two structurally distinct configurations has been found in deeply supercooled water, indicating the existence of a liquid- liquid critical point. LÄS MER

  4. 3. Urban Stormwater Treatment with Ultrafiltration and Pulsatile Fluid Flow

    Författare :Saida Kaykhaii; Inga Herrmann; Annelie Hedström; Ekaterina Sokolova; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; VA-teknik; Urban Water Engineering; Centrumbildning - Centrum för dagvattenhantering DRIZZLE ; Centre - Centre for Stormwater Management DRIZZLE ;

    Sammanfattning : Stormwater can be a potential water resource if it is treated, and the quality meets the demand, depending on the application. Various nutrients and pollutants, for example microorganisms can enter stormwater and can vary depending on time and place, as the contaminants come from different sources. LÄS MER

  5. 4. Framing the water and sanitation challenge : A history of urban water supply and sanitation in Ghana 1909 - 2005

    Författare :Anna Bohman; Lena Andersson-Skog; Urban Strandberg; Björn-Ola Linnér; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Ghana; urban water supply; sanitation; institutional change; policy development; frames; private sector participation; economic history; Economic history; Ekonomisk historia; ekonomisk historia; Economic History;

    Sammanfattning : This thesis analyses the development of urban water supply and sanitation services in Ghana from 1909 to 2005.  Special focus is put on institutional arrangements with regard to networked, large scale and centrally managed water and sewerage services. LÄS MER

  7. 5. Intermolecular interactions in hydrogen bonded 1:1 molecular complexes. A matrix isolation study

    Författare :Anders Engdahl; Biokemi och Strukturbiologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; infrared laser irradiation; dimethyl ether; water dimer; hydrogen chloride; formamide; acetone; formic acid; ammonia; water; intermolecular; matrix isolation; FIR; FTIR; infrared; isomerisation; ab initio; Physical chemistry; Fysikalisk kemi;

    Sammanfattning : A number of matrix isolated binary hydrogen bonded complexes with water as one of the components have been investigated with FTIR in the mid and far infrared regions. Water has been found to be the hydrogen bond donor in complexes with water, ammonia, dimethyl ether and acetone. LÄS MER