Sökning: "limit of detection"

Visar resultat 16 - 20 av 284 avhandlingar innehållade orden limit of detection.

  1. 16. Spectroscopic studies of the negative state of atoms

    Författare :Jakob Welander; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Atomic Physics; Photodetachment; Negative Ions; Anions; Laser Photodetachment Spectroscopy; Electron Affinity; ISOLDE; CERN; Radioisotopes; Photo Angular Distributions; Graphene; Electron correlation; Neutral Particle Detection; Wannier s Threshold Law;

    Sammanfattning : Negative ions are of fundamental interest in atomic physics due to the enhanced importance of the electron correlation. In this thesis new spectroscopic methods have been developed and then applied to study the nature of atomic negative ions. LÄS MER

  3. 17. Mobility of gold and other metals during alteration of the oceanic crust : Implications for the formation of VMS deposits

    Författare :Clifford G. C. Patten; Iain K. Pitcairn; Damon A. H. Teagle; Mark Hannington; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Geology; geologi;

    Sammanfattning : Tremendous physical and chemical exchanges occur along oceanic ridges between the lithosphere, the hydrosphere and the biosphere. During these exchanges important mobilisation of metals by hydrothermal fluid circulation takes place within the oceanic crust. LÄS MER

  4. 18. Visual and magnetic detection of antimicrobial resistance genes using nanoparticles and isothermal amplification

    Författare :Darío Sánchez Martín; Teresa Zardán Gómez de la Torre; Maria Strömme; Mahiar Hamedi; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; DNA amplification; isothermal amplification; visual detection; nanoparticles; VAM-NDA; rolling circle amplification; phi29 DNA polymerase; padlock probes.; Teknisk fysik med inriktning mot nanoteknologi och funktionella material; Engineering Science with specialization in Nanotechnology and Functional Materials;

    Sammanfattning : Antibiotic resistance is becoming an increasing concern, necessitating new ways to diagnose and treat it rapidly and accurately. One proposed solution is the use of nucleic acid amplification tests, capable of detecting resistance in just a few hours, as opposed to the several days that traditional testing methods may require. LÄS MER

  5. 19. Quality of snow deposited in urban areas : Storage, load assessment and release of selected pollutants with snowmelt

    Författare :Arya Vijayan; Maria Viklander; Helene Österlund; Jiri Marsalek; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; VA-teknik; Urban Water Engineering; Centre - Centre for Stormwater Management DRIZZLE ; Centrumbildning - Centrum för dagvattenhantering DRIZZLE ;

    Sammanfattning : Snow deposited in urban areas is exposed to pollutants originating from traffic, wet and dry atmospheric deposition, de-icing chemicals and traction materials. The conventional pollutants found in urban snow include solids (TSS), metals (Zn, Cu, Cd, Pb, etc.), Polycyclic Aromatic Hydrocarbons (PAHs), and chlorides. LÄS MER

  7. 20. Characterisation of starch: development of analytical methods

    Författare :Gunilla Nilsson; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; substitution pattern; microdialysis; HPAEC-PAD; NMR; biosensor; IMER; potato amylopectin starch; amylose; amylopectin; chain length; Analytical chemistry; Analytisk kemi;

    Sammanfattning : Starch, comprised of amylose and amylopectin, is a very complex biopolymer. Different methods are therefore needed for the investigation of the molecular structures of amylose and amylopectin. In this thesis analytical methods have been developed and various techniques were combined for the characterisation of starch. LÄS MER