Sökning: "spectrometry"

Visar resultat 21 - 25 av 1236 avhandlingar innehållade ordet spectrometry.

  1. 21. Advanced Mass Spectrometry Imaging in Neuropharmacology

    Författare :Theodosia Vallianatou; Per E. Andrén; Anna Nilsson; Mohammadreza Shariatgorji; Maria Karlgren; Irena Loryan; Nathalie Agar; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; mass spectrometry imaging; neuropharmacology; blood brain barrier; drug-drug interactions; aging; tacrine;

    Sammanfattning : Mass spectrometry imaging (MSI) has emerged as a valuable approach for mapping multiple molecular species in sections of diverse tissues. It enables simultaneous detection of numerous compounds (from neurotransmitters to small proteins) in the brain at relatively high lateral resolution (>5 μm) on a routine basis. LÄS MER

  3. 22. Electrophoretic focusing in microchannels combined with mass spectrometry : Applications on amyloid beta peptides

    Författare :Saara Mikkonen; Åsa Emmer; Johan Jacksén; Tapio Kotiaho; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; amyloid beta; computer simulation; electrophoresis; electrospray ionization; isoelectric focusing; isotachophoresis; MALDI; mass spectrometry; microchannel; microchip; nano-electrospray ionization; preconcentration; separation; Kemi; Chemistry;

    Sammanfattning : Analysis of low-abundance components in small samples remains a challenge within bioanalytical chemistry, and new techniques for sample pretreatments followed by sensitive and informative detection are required. In this thesis, procedures for preconcentration and separation of proteins and peptides in open microchannels fabricated on silicon microchips are presented. LÄS MER

  4. 23. Mycotoxins in indoor environments. Determination using mass spectrometry

    Författare :Erica Bloom; Avdelningen för medicinsk mikrobiologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Gas chromatography; Mass spectrometry; Mycotoxin; Indoor Air; Ergosterol.; Mold; High pressure liquid chromatography; Dust; Building materials;

    Sammanfattning : Dampness in indoor environments may cause various health problems. The specific causative agent(s) are unknown but may originate from degradation processes in damp materials, microbial growth, or a combination of these phenomena. The health impact of dampness in buildings is a politically, legally, and economically important question. LÄS MER

  5. 24. Data analysis of non-targeted mass spectrometry experiments

    Författare :Erik Tengstrand; Magnus Åberg; Olav Kvalheim; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Analytical chemistry; Chemometrics; mass spectrometry; HPLC; metabolomics; Analytical Chemistry; analytisk kemi;

    Sammanfattning : Data processing tools are valuable to the analytical chemist as they can speed up the analysis, and sometimes solve problems that are not feasible to solve in a traditional manner. However, the complexity of many data processing tools can make their use daunting for the inexperienced user. LÄS MER

  7. 25. Atomic laser resonance ionization mass spectrometry

    Författare :Lars Bengtsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; resonacne ioniation spectroscopy; photoionization; resonant photoexcitaiton; time-of-flight mass spectrometer; resonance ionization mass spectrometry; laser ablation; isotope selectivity; RIMS; RIS;

    Sammanfattning : .... LÄS MER