Search for dissertations about: "kolmonoxid"

Showing result 1 - 5 of 30 swedish dissertations containing the word kolmonoxid.

  1. 1. The Impact of Hydrocarbon and Carbon Oxide Impuritiesin the Hydrogen Feed of a PEM Fuel Cell

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Katrin Kortsdottir; KTH.; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fuel Cell; Hydrogen Impurities; Carbon Monoxide; Carbon Dioxide; Ethene; Propene; Methane; Propane; Toluene; Electrochemically Active Surface Area; Cyclic Voltammetry; Mass Spectrometry; bränslecell; vätgasföroreningar; kolmonoxid; koldioxid; eten; propen; metan; propan; toluen; elektrokemisk aktiv yta; cyklisk voltammetri; masspektrometri; Chemical Engineering; Kemiteknik;

    Abstract : The proton exchange membrane fuel cell generates electricity from hydrogen and oxygen (from air) through electrocatalytic reactions in an electrochemical cell. The Pt/C catalyst, commonly used in PEM fuel cells, is very sensitive to impurities that can interact with the active catalyst sites and limit fuel cell performance. READ MORE

  2. 2. Real-time breath gas analysis of carbon monoxide laser-based detection and pulmonary gas exchange modeling

    University dissertation from Umeå : Umeå University

    Author : Ramin Ghorbani; Umeå universitet.; [2018]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; carbon monoxide CO ; pulmonary gas exchange; computational modeling; real-time breath gas analysis; single-exhalation profile; laser absorption spectroscopy; nonlinear least-squares fitting; breath sampling; baseline level; diurnal variation; healthy population; exposure study; fysik; Physics; Physiology; fysiologi;

    Abstract : Breath gas analysis is a promising approach for non-invasive medical diagnostics and physiological monitoring. Real-time, breath-cycle resolved biomarker detection facilitates data interpretation and has the potential to improve the diagnostic value of breath tests as exhalation profiles carry spatiotemporal information about biomarker origin and gas exchange in the respiratory tract. READ MORE

  3. 3. Theoretical studies of porphyrin proteins

    University dissertation from Emma Sigfridsson, Department of theoretical Chemistry, Chemical Centre

    Author : Emma Sigfridsson; Lunds universitet.; Lund University.; [2001]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; molecular mechanics; quantum chemical calculations; electrostatic potential charges; atomic charges; ferrochelatase; cytochrome; myoglobin; Porphyrin; haem; QM MM; reorganisation energy; Theoretical chemistry; quantum chemistry; Teoretisk kemi; kvantkemi;

    Abstract : Popular Abstract in Swedish Hemoglobin, det protein som transporterar syre i blodet är förmodligen det mest välkända proteinet. Det är ett av många exempel på porfyrinproteiner, dvs. proteiner med en porfyrinring i det aktiva centrat. Porfyrinen kan binda en metalljon i mitten av ringen. READ MORE

  4. 4. Above and Below Graphene: Nanoparticle Chemistry and Interface Reactions

    University dissertation from Emma Sigfridsson, Department of theoretical Chemistry, Chemical Centre

    Author : Elin Grånäs; Lunds universitet.; Lund University.; [2014]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Graphene; Scanning tunneling microscopy; X-ray photoelectron spectroscopy; Adsorption; Nanoparticles; Ir 111 ; Surface science;

    Abstract : Popular Abstract in Swedish Många kemiska processer och reaktioner utspelas på ytan av material. Vissa fenomen, såsom korrosion, är uppenbara för blotta ögat, medan andra kan vara mindre uppenbara. READ MORE

  5. 5. Modelling and Experimental Investigations on Thermal Radiation in Combustion Environments

    University dissertation from Lund University

    Author : Henrik Hofgren; Lunds universitet.; Lund University.; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Thermal radiation; Property model; SNB; WSGG; LBL; Planck; particle; fly-ash; soot; grate; furnace; combustion;

    Abstract : Popular Abstract in Swedish Värmestrålning är högst relevant i förbränningsmiljöer. I dessa miljöer är förbränningsgaser och partiklar den huvudsakliga källan till värmestrålning. Förbränningsmiljön är komplex att beskriva. READ MORE