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Visar resultat 1 - 5 av 115 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Bläckborttagning från ben med hjälp av geler En kvantitativ studie för bläckborttagning på björnbäcken och björnkranium från Naturhistoriska riksmuseet

    Kandidat-uppsats, Göteborgs universitet/Institutionen för kulturvård

    Författare :Engla Nordin; [2023-11-07]
    Nyckelord :Conservation; reversibility; bones; FTIR; nanogels; hydrogels; ink.;

    Sammanfattning : This bachelor's thesis has investigated four different hydrogels loaded in different solvents efficiency to remove unknown ink from four pelvic bones and one skull from five bear individuals that belongs to The Swedish Museum of Natural History. The experimental part of the thesis consists of an FTIR analysis together with microscopy and macroscopy analysis of the ink on the bear skeletons, as well as some tests of different gel-solvent combinations on a moose skull. LÄS MER

  3. 2. Analysis of fatty acids in fatty acid-based herbicides by gas chromatography

    Master-uppsats, Lunds universitet/Kemiska institutionen

    Författare :Mohamad Abd Elwadood; [2023]
    Nyckelord :Analytical Chemistry; Fatty Acids; Gas Chromatography; Green Herbicides; Retention Index; Flame Ionization Detector; Mass Spectrometry; Supercritical Carbon Dioxide Extraction.; Chemistry;

    Sammanfattning : Fatty acids-based herbicides are considered to be a green alternative to synthesized weed control products. However, the environmentally sustainable effect of those herbicides needs more investigation to be confirmed. LÄS MER

  4. 3. The impact of human relevant mixture of contaminants on the development of human adipocytes

    Uppsats för yrkesexamina på grundnivå, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Annika Jansson; [2023]
    Nyckelord :;

    Sammanfattning : The objective of this project was to investigate how organic anthropogenic chemicals (OCs) effect the differentiation of adipocytes in the human body. The objective is also to contribute to novel research in how groups of chemicals in our surrounding affect us. LÄS MER

  5. 4. Investigation into methods for N-trifluoromethylation of a key intermediate in the synthesis of an SGLT1 inhibitor and potential starting point for anti-diabetes drugs

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Preparativ läkemedelskemi

    Författare :Alfred Larsson; [2023]
    Nyckelord :SGLT; SGLT1; diabetes; trifluoromethyl; N-trifluoromethylation;

    Sammanfattning : Sodium-glucose transporters (SGLTs) are a group of membrane proteins involved in regulating blood-glucose levels. Compounds which inhibit SGLTs are therefore of interest in the development of new treatments for diabetes. LÄS MER

  7. 5. Chemical analysis of polycyclic aromatic compounds in plastic materials used in indoor environments

    Uppsats för yrkesexamina på grundnivå, Örebro universitet/Institutionen för naturvetenskap och teknik

    Författare :Lania Yara; [2023]
    Nyckelord :polycyclic aromatic hydrocarbons; additives; plastics; artificial leather;

    Sammanfattning : Human bodies are in constant interaction with materials containing known and unknown chemicals of hazardous behavior. One group of chemicals are polycyclic aromatic compounds (PACs) which can be present in both indoor and outdoor materials, commonly in plastics. LÄS MER