Help for scientific article I need to explain a concept for a scientific paper. But I don't know if it is clear and if the grammar is right. I understand that it could be difficult traslate only a piece of the text. If there is someone that can try I would be very happy. "Results of measurements show how the RR (Retroriflective) samples have an evident tendency to reflect the incident radiation mainly backward to the incoming direction. In particular, when solar radiation reaches the RR samples with low incidence angles with respect to the perpendicular direction. When the radiation reaches the RR samples with high incidence angles, contrarily it is reflected symmetrically with respect to the perpendicular direction. This behaviour allows to rr samples to be employed synergically in urban canyon both on the walls and at the ground. It is possible understand such synergic interaction in a simple way comparing the different behaviour of diffusive and retrorifletive materials placed at the ground into the canyon model by means the optical geometry. When sun radiation comes from high incidence angles (like in the summer season) hits rr coating of the walls, this is mainly reflected into the ground of canyon (Fig. 1). The two different materials (diffuse and retroreflective) employed to coat the ground of canyon cause two different effects. Case 1. Retro reflective coating on the ground. The incidence angle on the ground is low. Hence the rr behaviour reflects the radiation mainly backward to the incoming direction that is the walls. In this case the backward radiation on the wall has a high incidence angle. Therefore the incoming radiation is mainly reflected out of the canyon Case 2. Diffusive coating on the ground The incidence angle on the ground is the same. However the diffusive behaviour reflects or diffuses the radiation. Therefore a lower percentage of incoming radiation goes back to the wall and consequently is lower the percentage of radiation that comes out from the canyon. This sample considerations can be verified by the measurements carried out in the Canyon model. The Results of measurements show that the percentage of outlet radiation close to the wall using RR coating, is higher than the one measured using diffusive coating. Similar considerations can be applied regarding the results of albedo in the centre of canyon. The orthogonal radiation on the ground is diffused by the diffusive coating, instead it is mainly reflected backward by retroreflective coating."