Sökning: "chemometrics"

Visar resultat 11 - 15 av 50 avhandlingar innehållade ordet chemometrics.

  1. 11. Studies of Micellar Electrokinetic Chromatography as an Analytical Technique in Pharmaceutical Analysis - an Industrial Perspective

    Författare :Karin Stubberud; Brian J. Clark; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmaceutical chemistry; Micellar Electrokinetic Chromatography; Pharmaceutical Analysis; Chemometrics; Validation; Mass Spectrometry; Partial-filling technique; Pilocarpine; Ibuprofen; Codeine.; Farmaceutisk kemi; Pharmaceutical chemistry; Farmaceutisk kemi; analytisk farmaceutisk kemi; Analytical Pharmaceutical Chemistry;

    Sammanfattning : Studies have been performed to evaluate the use of micellar electrokinetic chromatography (MEKC), one mode of capillary electrophoresis (CE), as an analytical technique in industrial pharmaceutical analysis. The potential for using chemometrics for the optimisation of MEKC methods has also been studied as well as the possibilities of coupling MEKC with mass spectrometry (MS). LÄS MER

  3. 12. Process analytical methods for monitoring of the film coating on pharmaceutical pellets and tablets using NIR spectrometry and image analysis

    Författare :Martin Andersson; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; PLS; PCA; PAC; NIR; chemometrics; moving samples; information depth; release rate; image analysis; near infrared; process analytical chemistry; thickness; coating; film; tablets; Pellets; granules; Analytical chemistry; Analytisk kemi;

    Sammanfattning : Pharmaceutical tablets and pellets are often covered with a coating. There is a need for methods that enable monitoring of the growth of such films during processing. Such analyses can be performed using process analytical chemical methods based on near infrared (NIR) diffuse reflectance spectrometry. It provides with analyses that take only ca. LÄS MER

  4. 13. Enantiomeric Separations using Chiral Counter-Ions

    Författare :Jakob Haglöf; Curt Pettersson; Anders Karlsson; Jacques Crommen; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Capillary Electrophoresis; Chiral Counter-Ion; Divalent Dipeptide; Enantioselectivity; Electroosmosis; Chemometrics; Molecular Descriptor; Structure-Enantioselectivity Relationship; Pharmaceutical chemistry; Farmaceutisk kemi; Analytical Pharmaceutical Chemistry; Analytisk farmaceutisk kemi;

    Sammanfattning : This thesis describes the use of chiral counter-ions for the enantiomeric separation of amines in non-aqueous capillary electrophoresis. The investigations have been concentrated on studies of the influence, of the chiral counter-ion, the solvent, the electrolyte and the analyte, on the enantioselective separation. LÄS MER

  5. 14. Mapping the consequenses of physical exercise and nutrition on human health : A predictive metabolomics approach

    Författare :Elin Chorell; Henrik Antti; Lorraine Brennan; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Metabolomics; physical exercise; cardiorespiratory fitness nutrition; high protein and fat diet; Lactobacillus F19; probiotics; GC-MS; plasma; chemometrics; multivariate analysis statistical experimental design; design of experiments; Chemistry; Kemi; Systems Analysis; systemanalys; näringslära; Nutrition; molecular medicine medical sciences ; molekylär medicin medicinska vetenskaper ;

    Sammanfattning : Human health is a complex and wide-ranging subject far beyond nutrition and physical exercise. Still, these factors have a huge impact on global health by their ability to prevent diseases and thus promote health. LÄS MER

  7. 15. Multivariate design of molecular docking experiments : An investigation of protein-ligand interactions

    Författare :David Andersson; Anna Linusson Jonsson; Gabriele Cruciani; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Molecular docking; chemometrics; multivariate analysis; principal component analysis; PCA; design of experiments; DoE; partial least-square projections to latent structures; PLS; scoring functions; ligand-binding cavity; major histocompatibility complex; MHC; glycopeptide; T-cell.; Pharmaceutical chemistry; Läkemedelskemi; datorlingvistik; computational linguistics;

    Sammanfattning : To be able to make informed descicions regarding the research of new drug molecules (ligands), it is crucial to have access to information regarding the chemical interaction between the drug and its biological target (protein). Computer-based methods have a given role in drug research today and, by using methods such as molecular docking, it is possible to investigate the way in which ligands and proteins interact. LÄS MER