Sökning: "Karlsson Mikael"

Visar resultat 36 - 40 av 45 avhandlingar innehållade orden Karlsson Mikael.

1. 36. On the Agglomeration of Particles in Exhaust Gases

   Författare :Ghulam Majal; Mihai Mihaescu; Mats Åbom; Mikael Karlsson; Lisa Prahl Wittberg; Henrik Ström; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Multiphase flow; DES; particulate matter; exhaust after treatment; particle agglomeration; Lagrangian particle tracking; Teknisk mekanik; Engineering Mechanics;

   Sammanfattning : Particulate emissions from road transportation are known to have an adverse impact on human health as well the environment. As the effects become more palpable, stricter legislation have been proposed by regulating bodies. LÄS MER

3. 37. Clinical application of intensity and energy modulated radiotherapy with photon and electron beams

   Författare :Xiangkui Mu; Björn Zackrisson; Mikael Karlsson; Thomas Björk-Eriksson; Erik Blomquist; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Oncology; Radiotherapy; IMXT; IMET; IMPT; proton beams; electron beams; treatment planning; cancer induction; side-effects; fraction time; intensity modulated radiotherapy; Onkologi; Oncology; Onkologi; Oncology; onkologi;

   Sammanfattning : In modern, advanced radiotherapy (e.g. intensity modulated photon radiotherapy, IMXT) the delivery time for each fraction becomes prolonged to 10-20 minutes compared with the conventional, commonly 2-5 minutes. The biological effect of this prolongation is not fully known. LÄS MER

4. 38. Verification of dose calculations in radiotherapy

   Författare :Tufve Nyholm; Mikael Karlsson; Ben Mijnheer; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; radiotherapy; dose calculation; quality control; pencil kernel; Radiological physics; Radiofysik;

   Sammanfattning : External radiotherapy is a common treatment technique for cancer. It has been shown that radiation therapy is a both clinically and economically effective treatment for many types of cancer, even though the equipment is expensive. The technology is in constant evolution and more and more sophisticated and complex techniques are introduced. LÄS MER

5. 39. Developing and evaluating dose calculation models for verification of advanced radiotherapy

   Författare :Jörgen Olofsson; Mikael Karlsson; Anders Ahnesjö; Crister Ceberg; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Radiation therapy; high-energy photons; dose calculation; multi-source model; pencil kernel; uncertainties; action levels; Radiological physics; Radiofysik;

   Sammanfattning : A prerequisite for modern radiotherapy is the ability to accurately determine the absorbed dose (D) that is given to the patient. The subject of this thesis has been to develop and evaluate efficient dose calculation models for high-energy photon beams delivered by linear accelerators. LÄS MER

7. 40. George W. Bush : en (r)evolution i amerikansk utrikespolitik?

   Författare :Frida Stranne; Mikael Baaz; Svante Karlsson; Anders Stephanson; Högskolan i Halmstad; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; International relations; American foreign policy history; Bush doctrine; ideology; historical synthesis; progressive continuity; Internationella relationer; amerikansk utrikespolitisk historia; Bushdoktrinen; ideologi; historisk syntes; säkerhet; progressiv kontinuitet; International relations; American foreign policy history; Historical synthesis; Ideology; Bush doctrine; Security; Progressive continuity;

   Sammanfattning : This PhD dissertation sets out to deepen our understanding of American foreign policy and to place the George W. Bush administration, its world view, ideology and war on terror in a historical perspective. The question is if George W. LÄS MER