Sökning: "Organic Chemicals"

Visar resultat 1 - 5 av 185 avhandlingar innehållade orden Organic Chemicals.

  1. 1. A strategy for ranking environmentally occuring chemicals

    Författare :Lennart Eriksson; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; QSAR; hazard ranking; statistical design; multivariate modelling; halogenated aliphatics; PCA; PLS;

    Sammanfattning : A systematic methodology for quantitative structure-activity relationship (QSAR) development in environmental toxicology is provided. The methodology is summarized in a strategy with six sequential steps. LÄS MER

  3. 2. Novel Organophosphorus Compounds for Materials and Organic Synthesis

    Författare :Keyhan Esfandiarfard; Sascha Ott; Declan Gilheany; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : This thesis is devoted to the development of new organophosphorus compounds for potential uses in material science and as reagents in Organic Chemistry. Organophosphorus compounds in a single molecule or organic electronics context are appealing as the phosphorous centers perturb the electronic properties of the π-conjugated systems while at the same time provide synthetic handles for subsequent synthetic modifications. LÄS MER

  4. 3. Improving alternatives assessment of plastic additives : exploring in silico tools to identify less hazardous flame retardants

    Författare :Ziye Zheng; Patrik L. Andersson; Hans Peter Arp; Gregory Peters; Gerrit Schüürmann; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Chemical alternatives assessment; plastic additives; flame retardants; hazard; emission; in silico; modeling; quantitative structure-activity relationship QSAR ; multi-criteria decision analysis MCDA ; environmental science; miljövetenskap; organisk kemi; Organic Chemistry; ekotoxikologi; Ecotoxicology; Toxicology; toxikologi;

    Sammanfattning : Alternatives assessment is applied for replacing hazardous chemicals with viable, safer substitutes. High quality experimental hazard data, however, are usually unavailable for this purpose, and obtaining in silico data is the only approach to fill in data gaps. LÄS MER

  5. 4. Novel strategies for C-C/X bond formation

    Författare :Prasad Anaspure; Ian A. Nicholls; Suppan Kathiravan; Jesper G. Wiklander; Subramanian Suriyanarayanan; Yannick Landais; Linnéuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; annulation; C-H activation; heterocycles; heterogeneous catalysis; homogeneous catalysis; lab-on-a-chip; Suzuki cross-coupling; Organic Chemistry; Organisk kemi;

    Sammanfattning : The formation of C-C/X bonds is essential for the manufacture of a broad range of chemicals and materials used in areas critical for maintaining quality of life in modern society, e.g. pharmaceuticals, agrochemicals and polymers, and for aspects of research in organic chemistry. LÄS MER

  7. 5. Valorization of low-value lignocellulosic side-streams

    Författare :Daria Lebedeva; Joseph S. M. Samec; Emiel J.M. Hensen; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Lignocellulose; lignin; hemicellulose; hydrodeoxygenation; zeolites; furfural; catalysis; cycloaddition; biomass fractionation; pulping; Organic Chemistry; organisk kemi;

    Sammanfattning : The development of novel pathways for valorizing low-value streams from pulp, forest, and agricultural industries is crucial for realizing a circular bioeconomy and addressing the needs of both platform chemicals and fuels. Utilizing hemicellulose and lignin as biomass-derived feedstocks facilitates the production of sustainable liquid hydrocarbons, with catalytic hydrodeoxygenation being a key process. LÄS MER