1,721,032 research outputs found
Improved transmutation of elements in Pd-D systems processed by an UV laser
No full textG. C. Righini and M. A. Forastiere Eds
Synthesis and characterisation of starch-stabilized Ag nanostructures for sensors applications
No full textSilver nanostructures were successfully synthesized through a simple and ‘green’ route using starch as a capping agent. High resolution electron microscopy (HREM), X-ray diffraction (XRD), UV–Vis absorption suggested that Ag nanocrystals, having a size lower than 10 nm, were obtained, in addition a self-assembly into ribbon-like structures was been also observed. The silver nanostructures were electrodeposited onto suitable substrates with gold interdigital electrodes realizing amperometric sensors that showed a high sensitivity to hydrogen peroxide
RNA editing and modifications of RNAs might have favoured the evolution of the triplet genetic code from an ennuplet code
No full textHere we suggest that the origin of the genetic code, that is to say, the birth of first mRNAs has been triggered by means of a widespread modification of all RNAs (proto-mRNAs and proto-tRNAs), as today observed in the RNA editing and in post-transcriptional modifications of RNAs, which are considered as fossils of this evolutionary stage of the genetic code origin. We consider also that other mechanisms, such as the trans-translation and ribosome frameshifting, could have favoured the transition from an ennuplet code to a triplet code. Therefore, according to our hypothesis all these mechanisms would be reflexive of this period of the evolutionary history of the genetic code
Structural and Morphological Analysis of reactively sputtered tellurium suboxide thin films
No full textCompositional and optical characterization of rf sputter deposited TeOx thin films for optical disk application
No full textMgF2 films deposited by ion assisted electron beam evaporation for high power UV laser applications
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