A new model for the high-energy emission from pulsars is developed by considering charged particle motion in the fields of a spinning, highly magnetised and conducting sphere in vacuum. A generally applicable approximation to the particle motion in strong fields is developed and applied to the numerical modelling, and the radiation emitted by curvature emission is summed to generate light curve...

Vegetation canopies like most of the natural surfaces reflect the incoming radiation flux in an anisotropic way. Thereby, for an adequate interpretation of the reflectance, we should geometrically characterise the reflecting properties of the surfaces. The basic function that characterises the angular dependence of the reflectance is the Bidirectional Reflectance Distribution Function (BRDF), w...

background: recently, there have been many studies on the harmful effects of radiation and the regulations on radiation safety have been toughened both at the in nation and abroad. this study aims to identify the perceptions and actions taken as to radiation safety, and the degree of knowledge related to radiation held by the radiologists working in large hospitals. materials and methods: the r...