Search for dissertations about: "marine archaeological wood"

Found 4 swedish dissertations containing the words marine archaeological wood.

  2. 1. Sulfur-Related Conservation Concerns in Marine Archaeological Wood : The Origin, Speciation and Distribution of Accumulated Sulfur with Some Remedies for the Vasa

    Author : Yvonne Fors; Magnus Sandström; Ian MacLeod; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Sulfur accumulation; marine archaeological wood; Vasa; acidity; iron; ammonia; x-ray spectroscopy; cellulose; Chemistry; Kemi; strukturkemi; Structural Chemistry;

    Abstract : Synchrotron-based sulfur spectroscopy reveals a common concern for marine archaeological wood from seawater: accumulation of reduced sulfur compounds in two pathways. The distribution of sulfur species in the oak wood cell structure was mapped by scanning x-ray spectro-microscopy (SXM). READ MORE

  4. 2. Practical application of machine learning for analyses of biological matrices and environmental phenomena

    Author : Alexandra Walsh; Göteborgs universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Machine learning; Surface enhanced Raman spectroscopy; Acute lymphatic leukaemia; Volatile halogenated organic carbons; Marine algae; Doxorubicin; Principal component analysis; Multivariate statistics; Design of experiments; Waterlogged archaelogical wood; Transposed orthogonal partial least squares;

    Abstract : This thesis presents research aimed at forwarding an understanding of machine learning methods as a method of studying complex matrices and environmental phenomena. A number of machine learning methods in the form of linear projection algorithms and statistical experimental designs were applied for qualitative analysis of different matrices. READ MORE

  5. 3. Structure and bonding of sulfur-containing molecules and complexes

    Author : Emiliana Damian Risberg; Magnus Sandström; Ingmar Persson; Tsun-Kong Sham; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Sulfur species; x-ray absorption and vibrational spectroscopy; TP-DFT calculations; Chemistry; Kemi; strukturkemi; Structural Chemistry;

    Abstract : Synchrotron-based spectroscopic techniques enable investigations of the many important biological and environmental functions of the ubiquitous element sulfur. In this thesis the methods for interpreting sulfur K-edge X-ray absorption near edge structure (XANES) spectra are developed and applied for analyses of functional sulfur groups. READ MORE

  6. 4. Submerged Landscapes in the Hanö Bay : Early Holocene shoreline displacement and human environments in the southern Baltic Basin

    Author : Anton Hansson; Kvartärgeologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; HUMANIORA; HUMANITIES; Submerged landscapes; Baltic Sea; Southern Sweden; Geoarchaeology; Mesolithic; Early Holocene; Environmental reconstruction; Shoreline displacement;

    Abstract : During times of lower global sea level, vast areas of the coastal shelf were exposed and converted into ecologically diverse coastal landscapes that wereattractive for human occupation. The landscapes were subsequently flooded during the deglaciation, but well-preserved remains of these landscapes andtheir inhabitants can today be found on the seafloor. READ MORE