Sökning: "spectrometry"

Visar resultat 31 - 35 av 1239 avhandlingar innehållade ordet spectrometry.

  1. 31. Mass Spectrometry with Electrospray Ionization from an Adjustable Gap

    Författare :Patrik Ek; Åsa Emmer; Johan Roeraade; Per M. Claesson; Ulrika Nilsson; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Electrospray ionization; mass spectrometry; nanoelectrospray; ESI; MS; chip; emitter; gap; liquid bridge; nozzle; peptides; Analytical chemistry; Analytisk kemi;

    Sammanfattning : In this thesis the fabrication and analytical evaluation of two new electrospray emitters utilized for mass spectrometry analysis is presented. The emitters are based on a new concept, where the spray orifice can be varied in size. The thesis is based on two papers. All present-day nanoelectrospray emitters have fixed dimensions. LÄS MER

  3. 32. Mass Spectrometry-Based Protein Biomarker Discovery in Pancreatic Cancer

    Författare :Qimin Zhou; Lund Kirurgi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; pancreatic cancer; proteomics; mass spectrometry; biomarkers; diagnosis; prognosis; prediction; BASP1; WT1; YAP1; AGP1;

    Sammanfattning : Background: Pancreatic cancer has the lowest survival rate among all the major cancer types. Although recent decades have seen advances in diagnostic imaging, surgical techniques, perioperative care and oncological treatment, this has not been translated into major improvements in clinical outcome. LÄS MER

  4. 33. Study of the colonic mucus layer by mass spectrometry

    Författare :Sjoerd van der Post; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MUC2; mucin; intestine; proteomics; mass spectrometry;

    Sammanfattning : The mucus covering our internal mucosal surfaces is a part of the innate immune system, and the first line of defense against microbial challenges. The need of an efficient defense system is especially important in the lower parts of the digestive tract where the microbiota reaches its highest density. LÄS MER

  5. 34. Studies of atherogenic lipoproteins using mass spectrometry-based lipidomics

    Författare :Marcus Ståhlman; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; lipids; lipoproteins; atherogenesis; lipidomics; type 2 diabetes; mass spectrometry;

    Sammanfattning : The prevalence of type 2 diabetes is increasing worldwide and is about to reach epidemic proportions. The disease is often associated with dyslipidemia which is characterized by an atherogenic lipoprotein profile including elevated serum triacylglycerol levels, low high-density lipoprotein levels and high levels of small low-density lipoproteins. LÄS MER

  7. 35. On-line Mobile in situ Gamma Spectrometry

    Författare :Thomas Hjerpe; Lund Medicinsk strålningsfysik; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; radiobiologi; Kärnfysik; Nuclear physics; radiation protection.; 137Cs; peak-to-valley method; depth distribution; orphan source search; orphan sources; emergency preparedness; mobile gamma spectrometry; nuclear accidents; Nuclear medicine; radiobiology; Nukleärmedicin;

    Sammanfattning : Mobile in situ gamma spectrometry is an important instrument in the emergency preparedness for nuclear accidents. This work contributes through the development of strategies and analysis methods for two applications: an on-line search for gamma-emitting orphan sources and on-line estimation of the depth distribution of 137Cs. LÄS MER