Sökning: "surface sampling"

Visar resultat 1 - 5 av 170 avhandlingar innehållade orden surface sampling.

  1. 1. From Macro to Nano : Electrokinetic Transport and Surface Control

    Författare :Gaspard Pardon; Wouter van der Wijngaart; Philippe Renaud; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; microsystem; nanosystem; microfluidic; nanofluidic; surface modification; surface property; electrokinetics; model; simulation; material; polymer; thiol-ene; microfabrication; nanofabrication; micromanufacturing; nanomanufacturing; breath sampling; aerosol precipitation; corona discharge; electrostatic precipitation; grafting chemistry; click chemistry; nanopore; nanoporous membrane; photolithography; photopatterning; photografting; microfluidics; nanofluidics; oste; OSTE ; OSTEmer; lab-on-chip; loc; point-of-care; poc; biocompatibility; diagnostics; breath analysis; fuel cell; Electrical Engineering; Elektro- och systemteknik; Teknisk materialvetenskap; Materials Science and Engineering; Fysik; Physics; Medical Technology; Medicinsk teknologi;

    Sammanfattning : Today, the growing and aging population, and the rise of new global threats on human health puts an increasing demand on the healthcare system and calls for preventive actions. To make existing medical treatments more efficient and widely accessible and to prevent the emergence of new threats such as drug-resistant bacteria, improved diagnostic technologies are needed. LÄS MER

  3. 2. Microdialysis Sampling of Macro Molecules : Fluid Characteristics, Extraction Efficiency and Enhanced Performance

    Författare :Jiangtao Chu; Andreas Dahlin; Klas Hjort; Jan Kehr; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; microdialysis; high molecular weight cut-off; fluid characteristics; fluid recovery; extraction efficiency; biomarker; microporous membrane; macromolecule transport; transmembrane; large pore; surface modification; pluronic; dextran; in vitro; microdialysis catheter; Teknisk fysik med inriktning mot mikrosystemteknik; Engineering Science with specialization in Microsystems Technology; Teknisk fysik med inriktning mot materialvetenskap; Engineering Science with specialization in Materials Science;

    Sammanfattning : In this thesis, fluid characteristics and sampling efficiency of high molecular weight cut-off microdialysis are presented, with the aim of improving the understanding of microdialysis sampling mechanisms and its performance regarding extraction efficiency of biological fluid and biomarkers.Microdialysis is a well-established clinical sampling tool for monitoring small biomarkers such as lactate and glucose. LÄS MER

  4. 3. Surface Sampling and Automated Liquid Membrane Extraction of Fungicides

    Författare :Margareta Sandahl; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; natural water analysis; microporous membrane liquid-liquid extraction MMLLE ; supported liquid membrane SLM extraction; Dislodgeable fungicide residues; surface sampling; automated sample preparation for HPLC; Analytical chemistry; Analytisk kemi;

    Sammanfattning : A number of approaches for fungicide determination are presented. A surface sampling technique is utilised for the determination of fungicide foliar residues on greenhouse surfaces, mainly leaves. The procedure is based on solvation of the fungicides on the leaf surface with ethanol and HPLC analysis. LÄS MER

  5. 4. Spatial metabolomics using Surface Sampling Capillary Electrophoresis Mass Spectrometry  : New tool for direct surface sampling chemical analysis of biological samples

    Författare :Anastasia Golubova; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Analytical surface sampling tools enable direct chemical studies of solid biological samples, including morphologically diverse tissue, and provide both fast chemical analysis with minimum sample preparation and information about molecular spatial distribution. Spatially resolved investigations of tissue sections could help to reveal pathological mechanisms at specific tissue locations. LÄS MER

  7. 5. Sampling from large flotation cells : An invastigation of spatial distribution

    Författare :Lisa Malm; Jan Rosenkranz; Tommy Karlkvist; Anders Sand; Nils-Johan Bolin; Pertti Lamberg; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Flotation; sampling; Mineral Processing; Mineralteknik;

    Sammanfattning : The general trend in flotation technology today is towards larger flotation cells, which enables a higher throughput. However, adverse effects such as segregation and reduced froth transport efficiency have also been observed in larger cells. LÄS MER