The V(D)J recombinase subunits Rag-1 and Rag-2 mediate assembly of antigen receptor gene segments. We studied the mechanisms of DNA recognition by Rag-1/Rag-2 using surface plasmon resonance. The critical step for signal recognition is binding of Rag-1 to the nonamer. This is achieved by a region of Rag-1 homologous to the DNA-binding domain of the Hin family of bacterial invertases and to home...

The recombination parameter J 0 xmlns:xlink="http://www.w3.org/1999/xlink">s provides an important metric to characterize surface recombination. For its calculation, numerous methods and models have be applied. Since the for A...

The side-arm method for observing chemical recombinations described in the Quarterly Progress Report of April 15, 1958, page 24, is being used to study oxygen-atom recombination within the gas volume and on surfaces. Two modes of volume recombination have been considered: (a) O + 0O3 +0 203 0 03 + O 02 + 02 (b) O + O + 0 2 O + O 2 Reaction (a), involving ozone as an intermediate, proceeds at a ...

The carrier recombination processes in ZnO quantum dots 4 nm in diameter , ZnO nanocrystals 20 nm in diameter and bulk ZnO crystal have been studied using photoluminescence PL spectroscopy in the temperature range from 8.5 to 300 K. The obtained experimental data suggest that the ultraviolet PL in ZnO quantum dots originates from recombination of the acceptor-bound excitons for all temperatures...

D ow nladed fom One of the limiting factors to high device performance in photovoltaics is the presence of surface traps. Hence, the understanding and control of carrier recombination at the surface of organic-inorganic hybrid perovskite is critical for the design and optimization of devices with this material as the active layer. We demonstrate that the surface recombination rate (or surface t...

This work demonstrates the high potential of Al2O3 passivated black silicon in high efficiency Interdigitated Back Contacted (IBC) solar cells by reducing surface reflectance without jeopardizing surface passivation. Very low reflectance values, below 0.7% in the 300-1000 nm wavelength range, together with striking surface recombination velocities values of 17 and 5 cm/s on pand n-type crystall...