Sökning: "Scattered radiation"
Visar resultat 21 - 25 av 30 uppsatser innehållade orden Scattered radiation.
21. Microparticle Ejection and Electromagnetic Scattering in the SCRAP Experiment
Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)Sammanfattning : This Bachelor Thesis is done within the project SCRAP (SCattering of Radar Waves on Aerosols in Plasmas), which aims to investigate the role of microparticles in the mesosphere. A sounding rocket is to be launched in spring of 2015 containing the experiment. LÄS MER
22. Evaluating the Origin of Water Vapour in Giant Stars
Master-uppsats, Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation; Lunds universitet/Astronomi - Genomgår omorganisationSammanfattning : The advent of infrared astronomy, unlike optical astronomy that was developed over centuries, was delayed until the space age due to our own atmosphere acting as an efficient shield towards this radiation. With a lot of molecules (including water) emitting in the infrared region, it was first in the late 1990s that water no longer was deemed special and was observed in many cooler (K-M) giant stars. LÄS MER
23. Behovet av blyhandskar som skydd mot sekundärstrålning vid röntgenundersökning av djur
Kandidat-uppsats, SLU/Dept. of Animal Environment and HealthSammanfattning : X-rays are a potential risk for animal health care personnel. The present study will examine the risks for scattered radiation to the personnel, if no lead gloves are used when holding an animal during the x-ray examination. LÄS MER
24. Optimering av bildkvaliteten för SPECT-undersökningar med 111In-Octreoscan vid Norrlands universitetssjukhus : -en Monte Carlo studie
Master-uppsats, Institutionen för strålningsvetenskaper; Institutionen för fysikSammanfattning : Inom nuklearmedicinsk diagnostik används radioaktiva läkemedel för att utvärdera olika organs metabolism och fysiologiska beteende. Genom att använda en scintillationskamera kan strålningen som erhålls när det administrerade läkemedlet sönderfaller i kroppen detekteras och en funktionell bild över aktivitetsfördelningen erhålls. LÄS MER
25. Simulations of sound propagation at a duct termination with flow
Master-uppsats, KTH/AeroakustikSammanfattning : Both theoretically as well as in many applications like exhaust systems, ventilation pipes, mufflers, air intakes and also large scale industrial smoke stacks, it is of interest to understand how sound waves are scattered at duct exists. Especially for aeronautical application such as jet engines, the effect of coupling of acoustics and flow on sound radiation and reflection from a duct termination in a uniform is an important problem. LÄS MER