Interaction of implanted deuterium and helium with beryllium: Radiation enhanced oxidation

Properties of nitrogen-implanted beryllium and its interaction with energetic deuterium

study of dna interaction with ethylenediaminetetraacetic acid and sesamol food additives

برهمکنش dnaتیموس گاوی طبیعی (ct-dna) با اتیلن دی آمین تترااستات (edta)در بافرtris-hcl با 8/7 ph ( دراین ph،edta به نمک دی سدیم تبدیل می شود) وسسامول در بافر tris-hcl با4/7 ph مورد بررسی قرار گرفته است. edta و سسامول استفاده فراوانی در تکنولوژی غذایی و صنعت شیمیایی دارند. مدل اتصال dna مربوط بهedta بوسیله اسپکتروفتومتری جذب، دورنگ نمایی حلقوی(cd)، ویسکومتری وژل الکتروفورز بررسی شده است. طیفuv ...

Generic Evolution of Deuterium and Helium-3

The primordial abundances of deuterium and of helium-3, produced during big bang nucleosynthesis, depend sensitively on the baryon density. Thus, the observed abundances of D and 3 He may provide useful " baryometers " provided the evolution from primordial to present (or, presolar nebula) abundances is understood. Inevitably, the derivation of primordial from observed abundances requires the i...

Deuterium Retention in Carbon, Beryllium, and Carbon Layers on Titanium and Beryllium

In the context of plasma-facing walls in future nuclear fusion devices, a knowledge of the reaction mechanisms and properties of these materials is essential for operation and safety. The aim of the studies for this thesis was to investigate the effect of implanting ke V deuterium ions in various mixed and pure materials. To do so required an adaptation of the existing ultra-high vacuum experim...

Microstructural evolution of helium-implanted a-SiC

Helium has a decisive effect on the microstructure of silicon carbide materials after implantation and subsequent annealing. A dense population of bubbles and dislocation loops is already observed at relatively low displacement doses after annealing of helium-implanted a-SiC, while no visible damage appears after irradiation without helium implantation under otherwise equal conditions. The defe...