CuMn2O4 nanostructures: Facial synthesis, structural,magnetical, electrical characterization and activation energy calculation

synthesis and characterization of some macrocyclic schiff bases

ماکروسیکلهای شیف باز از اهمیت زیادی در شیمی آلی و دارویی برخوردار می باشند. این ماکروسیکلها با دارابودن گروه های مناسب در مکانهای مناسب می توانند فلزاتی مثل مس، نیکل و ... را در حفره های خود به دام انداخته، کمپلکسهای پایدار تولید نمایند. در این پایان نامه ابتدا یک دی آلدئید آروماتیک از گلیسیرین تهیه می شود و در مرحله بعدی واکنش با دی آمینهای آروماتیک و یا آلیفاتیک در رقتهای بسیار زیاد منجر به ت...

Synthesis and characterization of nanostructures

As particle size drops from microns to tens of nanometers, metallic nanoparticles cease to behave as bulk metal and begin exhibiting quantum mechanical behavior similar to that of individual atoms. Ten hydrogen atoms stacked side-by-side measure only a single nanometer. The lure of nanotechnology is not just making small devices; but to construct the smallest physical structures possible. A sin...

Synthesis and characterization of hybrid nanostructures

There has been significant interest in the development of multicomponent nanocrystals formed by the assembly of two or more different materials with control over size, shape, composition, and spatial orientation. In particular, the selective growth of metals on the tips of semiconductor nanorods and wires can act to couple the electrical and optical properties of semiconductors with the unique ...

Synthesis and Characterization of Titania Nanostructures

Nanotechnology has entered a revolutionary stage where the structure and properties of materials can be investigated, characterized and controlled at the nanoscale. New physical properties tend to appear at the nanoscale, giving rise to novel material performance characteristics. These unusual properties have attracted enormous interest in their potential for applications in magnetic, optical, ...

2.204. Peptoids: Synthesis, Characterization, and Nanostructures

Energy Optimization And Calculation Of Dose Absorption Enhancement Factor In Photon Activation Therapy

Introduction: Secondary radiation such as photoelectrons, Auger electrons and characteristic radiations cause a local boost in dose for a tumor when irradiated with an external X-ray beam after being loaded with elements capable of activating the tumor, e.g.; I and Gd. Materials and Methods:  In this investigation, the MCNPX code was used for simulation and calculation of dose enhancement facto...