Sökning: "antioxidants"

Visar resultat 1 - 5 av 111 avhandlingar innehållade ordet antioxidants.

  1. 1. Phenolic Antioxidants in Wood Smoke

    Detta är en avhandling från Chalmers University of Technology

    Författare :Jennica Kjällstrand; Chalmers tekniska högskola.; Chalmers University of Technology.; [2002]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bioteknik; Bioengineering; methoxyphenols; biomass; wood; lignin; smoke; combustion; antioxidants; benzene;

    Sammanfattning : Smoke from residential wood burning constitutes a complex mixture of organic compounds with varying environmental and health effects. This thesis focuses on antioxidants and aromatic hydrocarbons emitted from small-scale burning. LÄS MER

  2. 2. Deterioration of Polyethylene Exposed to Chlorinated Species in Aqueous Phases Test Methods, Antioxidants Consumption and Polymer Degradation

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Wenbin Yu; KTH.; [2013]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Antioxidants; Polyethylene pipes; Chlorine dioxide; Degradation;

    Sammanfattning : This thesis presents a study of antioxidant depletion in water containing chlorinated species (water containing 10 ppm either Cl2 or ClO2, buffered to pH = 6.8), the degradation products in the aqueous phase, and polyethylene pipe degradation scenarios. LÄS MER

  3. 3. Protection of Biomolecules by Antioxidants - Mechanisms and Applications

    Detta är en avhandling från Department of Biotechnology, Lund University

    Författare :Carl Elovson Grey; Lunds universitet.; Lund University.; [2006]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; antioxidants; dG; mass spectrometry; Analytical chemistry; Analytisk kemi; Food and drink technology; Livsmedelsteknik; Bioteknik; Biotechnology; DNA; Oxidation; Protein; Fenton reaction;

    Sammanfattning : Reactive oxygen species (ROS) consisting of various oxygen-based free radicals as well as other reactive non-radical species produced in O2-related metabolism or through other processes are involved in the oxidation of such vital biomolecules as DNA, proteins and lipids. The types of oxidation represented here are known to cause many different diseases and disorders in human beings, such as cancer, Alzheimer's disease and ageing. LÄS MER

  4. 4. Allergic airway disease studies on diesel exhaust exposures, oxylipins and antioxidants

    Detta är en avhandling från Umeå : Umeå Universitet

    Författare :Nirina Larsson; Umeå universitet.; [2013]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Asthma; allergic rhinits; diesel exhaust; airway inflammation; oxylipins; metabolomics; antioxidants; SVCT2; bronchoscopy; lungmedicin; Lung Medicine;

    Sammanfattning : Allergic airway disease, i.e. allergic rhinitis (AR) and asthma, is a common health problem. The prevalence is increasing in most countries of the world. LÄS MER

  5. 5. New Approaches to Investigate and Prevent Oxidation of Polypropylene

    Detta är en avhandling från Stockholm : Fiber- och polymerteknologi

    Författare :Petter Eriksson; KTH.; [2002]
    Nyckelord :oxidation; polypropylene; oxidative spreading; antioxidants; hyperbranched antioxidants;

    Sammanfattning : When employing chemiluminescence to evaluate stabiliserperformance in a polymer, the induction time or the time toreach maximum chemiluminescence intensity is often used. Insuch an experiment the longest part of the experiment isnormally the time before the oxidation starts. LÄS MER