Sökning: "Beryllium"
Visar resultat 11 - 15 av 30 avhandlingar innehållade ordet Beryllium.
11. On the Abundances of Li, Be and O in Metal-Poor Stars in the Galaxy
Sammanfattning : Stellar atmospheres constitute excellent environments to study the chemical evolution of our Galaxy. The chemical composition of these atmospheres reflects the composition of the gas from where these stars were born. LÄS MER
12. EMC barriers : measurement methodologies and model verification
Sammanfattning : The subject of Electromagnetic Compatibility (EMC) is introduced. A short overview of the regulatory EMC requirements in Europe and in the United States is presented. An explanation is given why it is important for people in the electronics business to understand the need for EMC regulations. LÄS MER
13. Fusion Plasma Observations at JET with the TOFOR Neutron Spectrometer : Instrumental Challenges and Physics Results
Sammanfattning : The neutron spectrometer TOFOR was installed at JET in 2005 for high-rate observation of neutrons from reactions between two deuterium (D) ions. Neutron spectrometry as a fusion plasma diagnostic technique is invoked to obtain information about the velocity states of fusion fuel ions. LÄS MER
14. A multi-prism lens for hard X-Rays
Sammanfattning : This thesis describes a new type of refractive lens for hardx-rays. It is shown that a linear array of prisms, slightlyinclined with respect to the optical axis, will form a linefocus at a certain distance from the lens. Hence, the namemulti-prism lens. LÄS MER
15. Reactions, bonding and spectra of organometallic and diatomic molecules, studied by high accuracy quantum chemical methods
Sammanfattning : The main topic of the thesis is reductive elimination and oxidative addition reactions with nickel and palladium complexes. It is found that hydrogen is added to nickel much easier than both ethane and methane. LÄS MER