Sökning: "free radical"

Visar resultat 1 - 5 av 207 avhandlingar innehållade orden free radical.

1. 1. Free radical mediated cellulose degradation

   Författare :Erik Johansson; KTH; []
   Nyckelord :free radicals; cellulose; polymer; average chain length; bleaching; TCF; ozone; degradation;

   Sammanfattning : This thesis addresses the mechanisms involved in cellulosedegradation in general and Totally Chlorine Free (TCF) bleachingof pulp in particular. The thesis shows that the cellulosedegradation during high consistency ozone bleaching is explainedby free radical chain reactions. LÄS MER

3. 2. Free radical mediated cellulose degradation during high-consistency ozone conditions : reaction patterns in fibers and free radical chemistryd Erik E. Johansson

   Författare :Erik E. Johansson; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Kemi;

   Sammanfattning : .... LÄS MER

4. 3. To metal, or not to metal : Diverse mechanisms of O2-activation and radical storage in the ferritin superfamily

   Författare :Vivek Srinivas; Martin Högbom; Brian Hoffman; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Metalloprotein; di-metal; Oxygen activation; Substrate oxidation; Ribonucleotide reductase; Radical; DOPA; ADE-DOT; X-Ray free-electron laser; soluble Methane monooxygenase; Biochemistry; biokemi;

   Sammanfattning : Proteins in the Ferritin-like superfamily are characterized by a four alpha-helical structural motif. These proteins are distributed across all three kingdoms of life and perform a wide range of functions. LÄS MER

5. 4. Experimental cardiopulmonary cerebral resuscitation : with special reference to cerebral eicosanoid production and free radical scavengers

   Författare :Xiaoli Liu; Marianne Forsman; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Anaesthesiology and intensive care; cerebral resuscitation; reperfusion damage; oxidative injury; eicosanoid; free radical scavenger; neurological function; alkaline buffer; S-PBN; PBN; Anestesiologi och intensivvård; Anaesthetics and intensive care; Anestesiologi och intensivvård; Anestesiologi; Anaesthesiology;

   Sammanfattning : Reperfusion injury after restoration of spontaneous circulation (ROSC) is often considered one of the predominant factors in determining neurological outcome in cardiac arrest. Therefore one of the main targets of experimental and clinical studies has been to mitigate this reperfusion injury. LÄS MER

7. 5. The influence of oxygen derived free radicals on in vitro and in vivo model systems : interactions of superoxide anion radical, hydrogen peroxide and hydroxyl radical

   Författare :Rolando Del Maestro; Uppsala universitet; []
   Nyckelord :MEDICINE; MEDICIN;

   Sammanfattning : .... LÄS MER