Search for dissertations about: "Rapid absorption"

Showing result 11 - 15 of 95 swedish dissertations containing the words Rapid absorption.

  2. 11. Optical Diagnostics for Quantitative Potassium Chemistry in Biomass Thermochemical Conversion Processes

    Author : Wubin Weng; Förbränningsfysik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Optical diagnostics; Quantitative measurement; TDLAS; Sulfation; Biomass; UV absorption spectroscopy; TLAF; Potassium chemistry;

    Abstract : Biomass is an essential sustainable and carbon-neutral energy source. Through thermochemical conversion processes, such as combustion and gasification, biomass can generally be used in boilers to provide heat and/or power. Biomass fuels contain varying amounts of potassium, chlorine and sulfur. READ MORE

  4. 12. Multi-Photon Interactions with a Time Structure

    Author : Alexander Baev; KTH; []
    Keywords : nonlinear optics; two-photon absorption; mirrorless lasing; charge-transfer chromophores; solutions; resonant photoemission; life-time vibrational interference; scattering duration time; electron Doppler effect; polymers;

    Abstract : The present thesis concerns aspects of the interaction ofmatter in gas, liquid and solid phases, with electromagneticradiation, ranging from the optical to the X-ray region. Overthe last decade the availability of ultrashort strong laserpulses as well as of high power synchrotron sources of tunableX-ray radiation has stimulated a rapid development of newexperimental techniques which makes it possible to analysedifferent physical, chemical and biological processes inunprecedented detail. READ MORE

  5. 13. Ultrafast Dynamics in Ground and Excited States of Porphyrin Molecules

    Author : Peter Martinsson; Kemisk fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; intra- and intermolecular dynamics.; Zn-porphyrin; bacteriochlorophyll a; chlorophyll b; Femtosecond transient absorption spectroscopy; chlorophyll a; Physical chemistry; Fysikalisk kemi;

    Abstract : This thesis describes inter and intramolecular dynamics in porphyrin molecules. To create a basis for understanding the energy and electron transfer processes in photosynthesis, the ultrafast dynamics of monomeric chlorophyll a, chlorophyll b and bacteriochlorophyll a were studied with ultrashort laser pulses. READ MORE

  6. 14. Anion redox processes in novel battery cathode materials investigated by soft X-ray spectroscopy

    Author : Felix Massel; Laurent Duda; Håkan Rensmo; Maria Hahlin; Kevin Smith; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; soft X-ray spectroscopy; X-ray absorption spectroscopy XAS ; resonant inelastic X-ray scattering RIXS ; lithium-ion battery LIB ; sodium-ion battery SIB ; anionic redox; cathode materials; layered manganese oxide; spinel LNMO;

    Abstract : This thesis presents experimental investigations of the electronic structure of emerging and novel cathode materials used in lithium- and sodium-ion batteries. The investigated materials include a range of oxide materials containing the elements nickel and manganese. READ MORE

  7. 15. A novel technology for studying the disposition of drugs and toxicants in the lung : short inhalation exposures of the isolated and perfused rat lung to respirable dry particle aerosols

    Author : Pär Ewing; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Aerosol; inhalation; rat; lung; absorption; drugs; carcinogen; particles;

    Abstract : The disposition of solutes following the deposition of inhaled substances in the lung is a complex process that proceeds along parallel paths; passive diffusion of solutes through the air/blood barrier and local metabolism followed by blood-borne clearance to the circulation. Using the isolated and perfused lung (IPL) the pulmonary disposition of inhaled particles can be studied in great detail without interference from distal organs and systemic exposure. READ MORE