Sökning: "pro-oxidant"

Visar resultat 1 - 5 av 14 avhandlingar innehållade ordet pro-oxidant.

  1. 1. Environmentally Degradable Polyethylene : Effects of Additives and Environment on the Degradation and Degradation products

    Detta är en avhandling från Institutionen för polymerteknologi

    Författare :Farideh Khabbaz; [2001]
    Nyckelord :LDPE; polyethylene; oxidative degradation; photo-oxidation; thermo-oxidation; degradation products; photosensitisers; pro-oxidant; starch; master-batch; gas chromatography mass-spectrometry; GC-MS; solid phase microextraction; SPME;

    Sammanfattning : This thesis summarises and compares the influences ofdifferent additives (photosensitisers, pro-oxidants, abiodegradable filler) on blown low-density polyethylene (LDPE)films during photo- and thermal degradation with respect tochemical changes in the polymer matrices and identifieddegradation products. Additives studied were irondimethyldithiocarbamate (FeDMC), nickel dibutyldithocarbamate(NiDBC), carbon black, starch, a pro-oxidant that consisted ofmanganese stearate together with styrene butadiene rubber (SBR)or natural rubber (NR) and a master batch containing linearLDPE, starch and pro-oxidant. LÄS MER

  2. 2. The paradox of micronutrients : in vitro and human studies

    Detta är en avhandling från Stockholm : Karolinska Institutet, Dept of Biosciences and Nutrition

    Författare :Therese Woodhill; Karolinska Institutet.; Karolinska Institutet.; [2012]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Sammanfattning : Many essential micronutrients found in fruits and vegetables exhibit antioxidant properties, protecting against oxidation and oxidative stress. Their ability to react with electrons also enables them to act as pro-oxidants, causing damage opposed to preventing it. LÄS MER

  3. 3. Influence of the degradation mechanism on the molecular weight changes for some degradable polymers

    Detta är en avhandling från Institutionen för polymerteknologi

    Författare :Bengt Erlandsson; [1998]
    Nyckelord :;

    Sammanfattning : The influence of degradation mechanism on molecular weightchanges was investigated for certain degradable polymers. Thepolymers investigated were modified low density polyethylene(LDPE), poly(ethylene-co-vinyl alcohol) (EVOH) and aliphatic polyesters. LÄS MER

  4. 4. Gene environment-interaction and cardiovascular phenotype in obesity and diabetes

    Detta är en avhandling från Stockholm : Karolinska Institutet, Dept of Medicine, Solna

    Författare :Shafaat Hussain; Karolinska Institutet.; Karolinska Institutet.; [2019]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Sammanfattning : Although a large body of evidence supports the notion that genes determine cardio-metabolic traits and outcomes, the non-genetic regulation of these events has recently gained increasing attention. Plastic chemical modifications of DNA-histone complexes defined epigenetic changes regulate gene expression by modifying chromatin accessibility to transcription factors. LÄS MER

  5. 5. From Proteomic Analysis to Biomarker Application - Studies of Carbonyl Reductase in Fish

    Detta är en avhandling från Stockholm : Karolinska Institutet, Dept of Medicine, Solna

    Författare :Eva Albertsson; Göteborgs universitet.; Gothenburg University.; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fish; Proteomics; Biomarker; Carbonyl Reductase; AhR agonists; Oxidative stress; Biomonitoring;

    Sammanfattning : Many anthropogenic substances are present in the aquatic environment, but there is limited information on how this combination of chemicals affects exposed wildlife. To assess the impact of chemicals, a biomarker approach is frequently applied in environmental biomonitoring programmes. LÄS MER