Search for dissertations about: "Antioxidants"

Showing result 1 - 5 of 160 swedish dissertations containing the word Antioxidants.

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

    University dissertation from Stockholm : KTH Royal Institute of Technology

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

    Abstract : 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. READ MORE

  2. 2. Regenerable Organochalcogen Antioxidants An Explorative Study

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Jiajie Yan; Uppsala universitet.; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; autoxidation; antioxidant; selenium; tellurium; regenerable; multifunctional; radical-trapping; hydroperoxide-decomposing; co-antioxidant; Chemistry with specialization in Organic Chemistry; Kemi med inriktning mot organisk kemi;

    Abstract : Antioxidants are widely used to protect organic materials from damages caused by autoxidation, an oxidation process that occurs under normal aerobic conditions. In this thesis, novel multifunctional organoselenium and organotellurium antioxidants were designed, synthesized, and evaluated in search for compounds with better radical-trapping capacity, regenerability, and hydroperoxide-decomposing ability. READ MORE

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

    University dissertation from Department of Biotechnology, Lund University

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

    Abstract : Popular Abstract in Swedish Reaktiva syreföreningar s.k. ROS uppstår naturligt i den syrerelaterade metabolismen eller i andra processer och den orsakar skador på essentiella föreningar i cellen såsom DNA, proteiner och fetter. Denna oxidation ligger till grund för många allvarliga sjukdomar hos människor som t. READ MORE

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

    University dissertation from Umeå : Umeå Universitet

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

    Abstract : 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. READ MORE

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

    University dissertation from Stockholm : Fiber- och polymerteknologi

    Author : Petter Eriksson; KTH.; [2002]
    Keywords : oxidation; polypropylene; oxidative spreading; antioxidants; hyperbranched antioxidants;

    Abstract : 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. READ MORE