Sökning: "gc-ms"

Visar resultat 1 - 5 av 159 avhandlingar innehållade ordet gc-ms.

  1. 1. Aroma characterisation and retention after heat treatment and drying of fruits using extraction and GC-MS analysis

    Författare :Rui Ráice; Livsmedelsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fruits; Vangueria infausta; Mangifera indica; volatile; aroma; blanching; drying; encapsulation; modelling; GC-MS.;

    Sammanfattning : This study concerns the identification and characterisation of volatile components of fruits, and evaluation of the effect of heat treatment and drying on retention or loss of volatiles of fruits. The investigation included developing a procedure to extract volatile components from the fruit matrix, a purification step, separation, identification and quantification. LÄS MER

  3. 2. Emissions from pyrolysis and combustions of solid and liquid fuels investigated using GC/MS and GC/FTIR/FID

    Författare :Åsa Ingemarsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; emission; gasoline; RME; diesel; GC FTIR FID; pyrolysis; combustion; GC MS; wood;

    Sammanfattning : .... LÄS MER

  4. 3. Microorganisms in the Indoor Environment Analysis and Structure-Bioactivity Relationships

    Författare :Anita Saraf; Avdelningen för medicinsk mikrobiologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Limulus assay; bioactivity; ergosterol; muramic acid; LPS; organic dust; GC-MS; GC-MSMS; Microbiology; bacteriology; virology; mycology; Mikrobiologi; bakteriologi; virologi; mykologi;

    Sammanfattning : Inhalation of air-borne microorganisms and components thereof can cause illnesses and diseases. However, lack of specific and sensitive methods for exposure assessment can pose problems in predicting health outcomes. LÄS MER

  5. 4. Combustion Chemistry Investigation of Liquid and Solid Fuels

    Författare :Åsa Håkansson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; gasoline; flame; GC MS; heptane; combustion; pyrolysis; kinetics; emissions; wood; RME;

    Sammanfattning : The aim of this work was to study the combustion of liquid and solid fuels with the emphasis on intermediates and products. Depending on the structure and the complexity of the fuel different reactors and methods were used. Small-scale laboratory reactors were built and chemical analysis and evaluation methods were developed. Heptane. LÄS MER

  7. 5. Multivariate processing and modelling of hyphenated metabolite data

    Författare :Pär Jonsson; Michael Sjöström; Royston Goodacre; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemometrics; Curve Resolution; GC MS; LC MS; Metabolomics; Metabonomics; Multivariate Analysis and Multivariate Curve Resolution.; Organic chemistry; Organisk kemi;

    Sammanfattning : One trend in the ‘omics’ sciences is the generation of increasing amounts of data, describing complex biological samples. To cope with this and facilitate progress towards reliable diagnostic tools, it is crucial to develop methods for extracting representative and predictive information. LÄS MER