Sökning: "Infrared spectroscopy"

Visar resultat 1 - 5 av 409 avhandlingar innehållade orden Infrared spectroscopy.

  1. 1. Infrared spectroscopy : Method development and ligand binding studies

    Författare :Saroj Kumar; Andreas Barth; Janos Mink; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Infrared; Ligand binding; method development; Biophysical chemistry; Biofysikalisk kemi; biofysik; Biophysics;

    Sammanfattning : Infrared spectroscopy detects molecular vibrations and assesses the properties of molecules and their environment. It is a powerful technique to detect ligand induced changes in biomolecules as it has distinct signals and provides different levels of structural information. LÄS MER

  3. 2. Infrared spectroscopy : a tool for protein characterization

    Författare :Chenge Li; Andreas Barth; Silvia Maria Doglia; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Biochemistry; biokemi;

    Sammanfattning : Infrared (IR) spectroscopy, which belongs to vibrational spectroscopy, detects the vibrations of molecules, for example, proteins. The absorption of the peptide group gives rise to 9 characteristic bands in the infrared region, named A, B, I-VII, with a decreasing energy or wavenumber (cm-1). LÄS MER

  4. 3. Computational infrared spectroscopy : Calculation of the amide I absorption of proteins

    Författare :Cesare Michele Baronio; Andreas Barth; Sander Woutersen; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; infrared spectroscopy; FTIR; simulation; calculation; amide I; transition dipole coupling; F matrix; protein; amyloid β; oligomers; β-helix; Biophysics; biofysik;

    Sammanfattning : Infrared spectroscopy is an important technique that allows to retrieve structural information from the analysis of absorption spectra. The main application of infrared spectroscopy within life science is the study of the amide I band, which is correlated with protein backbone conformation and, consequently, with the secondary structure of proteins. LÄS MER

  5. 4. Infrared spectroscopic studies : from small molecules to large

    Författare :Nadejda Eremina; Andreas Barth; Silvia Maria Doglia; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Infrared spectroscopy; transcription factors; DNA; creatine kinase; CaATPase; water; ligand binding; biofarmaci; Biopharmaceutics;

    Sammanfattning : Infrared light (IR) was first discovered by Friedrich Wilhelm Herschel in 1800. However, until 1940’s, molecular IR studies involved only water and small organic molecules, because of the long measurement times. LÄS MER

  7. 5. Measurement of trace components in aqueous solutions with near and mid infrared Fourier transform spectroscopy

    Författare :Peter Snoer Jensen; Atomfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Near-infrared; Temperature dependency; Dual-beam; Optical null; Optimal pathlength Haemodialysis liquid; Urea; Glucose; Phosphate; Atom- och molekylärfysik; Atomic and molecular physics; Infrared; Water absorption; Fourier transform spectroscopy; Fysicumarkivet A:2003:Snoer Jensen;

    Sammanfattning : This thesis treats various aspects of the measurement of trace components in aqueous solutions with Fourier transform infrared spectroscopy. This technique has several applications from such diverse fields as dairy industry and biomedical optics. LÄS MER