Sökning: "carbon monoxide"

Visar resultat 1 - 5 av 220 avhandlingar innehållade orden carbon monoxide.

  1. 1. Carbon monoxide in biological systems : An experimental and clinical study

    Författare :Anna-Maja Åberg; Jan-Erik Larsson; Dick Delbro; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Carbon monoxide; physiological effects; systemic inflammation; analytical method; blood; exhaled air; pharmacokinetics; cigarette smoking; blood donation; cytokines; Anaesthetics; Anestesiologi;

    Sammanfattning : Background: Carbon monoxide (CO) is a toxic gas, but it is also produced endogenously when haem is degraded. When produced in vivo, CO is believed to have positive biological effects. For example it activates the production of cyclic guanosine mono-phosphate and causes vasodilatation. LÄS MER

  3. 2. Photoinitiated Radical Carbonylation Using [11C]Carbon Monoxide : 11C-Labelling of Aliphatic Carboxylic Acids, Esters, and Amides

    Författare :Oleksiy Itsenko; Bengt Långström; Tor Kihlberg; Chryssostomos Chatgilialoglu; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organic chemistry; 11C-labelling; radicals; carbonylation; carbon monoxide; solvent effects; sensitizers; sulfoxides; WAY-100635; PET; Organisk kemi; Organic chemistry; Organisk kemi;

    Sammanfattning : One-step photoinitiated free radical carbonylation was employed for the rapid (5–7 min) labelling of aliphatic carboxylic acids, esters, and amides with a short-lived positron emitter 11C (t½ = 20.3 min) at the carbonyl position. The labelled compounds were synthesized from alkyl iodides (0.05–0. LÄS MER

  4. 3. Carbon monoxide and nitric oxide as antimicrobial agents : focus on ESBL-producing uropathogenic E.coli

    Författare :Charlotte Sahlberg Bang; Katarina Persson; Bo Söderquist; Annelie Brauner; Örebro universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; biofilm; carbon monoxide; CORM-2; DETA NO; extendedspectrum beta-lactamases; nitric oxide; urinary tract infection; uropathogenic Escherichia coli; Biomedicin; Biomedicine;

    Sammanfattning : Urinary tract infections (UTI) are common in humans and most often caused by uropathogenic Escherichia coli (E. coli). Extended-spectrum beta-lactamase (ESBL)-producing E. coli are increasing worldwide and they are frequently multidrug-resistant with limited treatment options. LÄS MER

  5. 4. [11C]Carbon Monoxide in Rhodium-/Palladium-Mediated Carbonylation Reactions

    Författare :Julien Barletta; Bengt Långström; Yu-Shin Ding; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organic chemistry; carbonylation reaction; carbon monoxide; PET; 11C-labelling; rhodium; palladium; Organisk kemi; Organic chemistry; Organisk kemi;

    Sammanfattning : Methods for the 11C-labeling of carbonyl compounds applicable in the preparation of radiotracers for Positron Emission Tomography (PET) are described. To this end [11C]carbon monoxide at low concentration was used in transition metal- mediated reactions. LÄS MER

  7. 5. Reactivity of small transition-metal clusters with carbon monoxide

    Författare :Lotta Holmgren; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Con< sub>; reaction probability; Nin< sub; time-of-flight mass spectrometry; carbon monoxide; Wnn< sub; Nbn< sub; adsorption; laser vaporisation; supersonic beam; Cun< sub;

    Sammanfattning : .... LÄS MER