Sökning: "Non-thermal Heating"

Visar resultat 1 - 5 av 10 avhandlingar innehållade orden Non-thermal Heating.

  1. 1. Time-Resolved X-ray Diffraction Studies of Laser-Induced Dynamics in Solids

    Författare :Åsa Bengtsson; Atomfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Time-resolved X-ray diffraction; ultrafast; phonons; pressure wave; Non-thermal melting; Fysicumarkivet A:2022:Bengtsson;

    Sammanfattning : X-ray diffraction is an invaluable tool in the field of structural dynamics. In the work described in this thesis, time-resolved X-ray diffraction experiments were carried out to investigate ultrafast lattice dynamics. LÄS MER

  3. 2. Pulsed Electric Field Food Treatment and Low Frequency Bioelectromagnetics

    Författare :Martin Lindgren; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; extremely low frequency; non-thermal microbial inactivation; electromagnetic fields; biological effects; treatment chambers; electric field distribution; magnetic fields; pulsed electric fields;

    Sammanfattning : This thesis is divided in two parts, both of which address the interaction between biological cells (especially cell membranes) and electromagnetic fields. The first part deals with the application of intense pulsed electric fields (PEF) in foods. It is intended to be a non-thermal method to inactivate microorganisms. LÄS MER

  4. 3. Ultrafast Structural and Electron Dynamics in Soft Matter Exposed to Intense X-ray Pulses

    Författare :Olof Jönsson; Carl Caleman; Nicusor Timneanu; Olle Björneholm; Jörgen Larsson; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; X-ray free-electron laser; Serial Femtosecond Crystallography; Radiation Damage; Plasma Simulations; Ultrafast Lasers; X-ray Imaging; Diffraction Theory; Ultrafast Phenomena; Hit Detection; Plasma Emission Spectra; Serial Femtosecond Crystallography; Protein Structure; Protein Crystallography; Metalloprotein; Non-thermal Heating; Water; Ferredoxin; NLTE Simulation; XFEL; FEL; SFX; Physics with specialization in Biophysics; Fysik med inriktning mot biofysik;

    Sammanfattning : Investigations of soft matter using ultrashort high intensity pulses have been made possible through the advent of X-ray free-electrons lasers. The last decade has seen the development of a new type of protein crystallography where femtosecond dynamics can be studied, and single particle imaging with atomic resolution is on the horizon. LÄS MER

  5. 4. Thriving in extremes : Local adaptation of grasses (Poaceae) to geothermally heated soils on a subarctic island

    Författare :Jan-Niklas Nuppenau; Aelys M. Humphreys; Catarina Rydin; Johan Ehrlén; Alessandro Chiarucci; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; abiotic stress; Agrostis; cold; colonization history; common garden; extreme environments; Festuca; frost; ice encasement; Iceland; heat; overwintering; phenology; plastome; snown; thermal tolerance; Plant Systematics; växtsystematik;

    Sammanfattning : Temperature is one of the most decisive parameters when it comes to determining characteristics and distributions of life worldwide. For plants, as sessile organisms, it is particularly important to be able to deal with the temperatures they are exposed to at a given location. LÄS MER

  7. 5. Fast ions and turbulent particle transport in tokamaks

    Författare :Frida Eriksson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NBI; numerical modelling; turbulence; drift waves; bump-on-tail; density peaking; Fusion plasma physics; wave-particle interaction;

    Sammanfattning : The presence of highly energetic (fast) ions, be it fusion born alpha particles or ions accelerated by auxiliary heating schemes, can affect the heating and transport of all particles in the plasma through two main mechanisms. First, fast ions may excite fast ion driven instabilities. LÄS MER