Sökning: "directional emission"
Visar resultat 1 - 5 av 11 avhandlingar innehållade orden directional emission.
Sammanfattning : Noble metallic nanoparticles which supports localized surface plasmon resonances, offers a variety of potential scientific as well as industrial applications. Due to a remarkable ability to confine light at nanoscale dimensions, far below the optical diffraction limit, together with an ability to detect minute changes in the local environment plasmonic nanoparticles have paved routes towards several new and intriguing techniques, promising for future applications in areas such as molecular sensing and quantum optics. LÄS MER
Sammanfattning : The thermal infrared and microwave emission from asteroids have many applications. Fundamental physical properties can be investigated, which have implications for the geophysical evolution of the asteroids, and the early history of the solar system.A new thermophysical model of asteroids is presented. LÄS MER
3. Sulphur Regulations for Shipping – Why a Regional Approach?: Scientific and Economic Arguments in IMO Documents 1988-1997
Sammanfattning : Some environmental issues for shipping are regulated globally with uniform standards and others with stricter regulations in specific areas. This thesis aims to provide an understanding of why a regional approach was chosen with SOx Emission Control Areas (SECAs) as the main form of control of sulphur oxide emissions from international shipping, with explanations based on documents from negotiations within the International Maritime Organization (IMO) during 1988-1997. LÄS MER
Sammanfattning : This thesis consists of five papers, four of them basically concerning environmental issues, while the fifth paper addresses the issue of measuring output from the educational sector. The first paper starts from the fact that industrial activity causes environmental damage. LÄS MER
Sammanfattning : In the Joint European Torus (JET) tokamak, monster sawtooth stabilisation by ICRH-accelerated hot ions is lost if plasma density falls below a certain density threshold, or if energetic-ion driven Alfvén eigenmodes inside q = 1 occur. In the first case, a transition away from long periodmonster sawteeth to a regime with shorter period, chaotic sawteeth (grassy sawteeth) takes place, while in the second case the monster sawtooth crash happens, degrading plasma confinement. LÄS MER