Exposure to radioactive elements or having them through drinking water causes many biological risks. Therefore, it is important to investigate the drinking water especially in regions where people depend on well water for drinking. Concentrations of some radionuclides in some water wells, in Arar city of Saudi Arabia, were measured by using Hyper Pure Germanium (HPGe) Detector. Concentrations o...

In Bacillus subtilis, utilisation of xylose, arabinose and ribose is controlled by the transcriptional factors XylR, AraR and RbsR, respectively. Here we apply the comparative approach to the analysis of these regulons in the Bacillus/Clostridium group. Evolutionary variability of operon structures is demonstrated and operator sites for the main transcription factors are predicted. The consensu...

La representación de los héroes y sus acciones en las Heroidas se configura a partir la perspectiva enunciativa distintas voces femeninas construidas por el discurso poético ovidiano. Partiendo del amplio sentido referencias intra e intertextuales entre cartas 5 17, analizaremos presentación Paris través dos símiles: primero, usado carta Enone, refiere al movimiento hojas desprendidas tallo (Ov...

BACKGROUND Diabetes Mellitus (DM) is one of the most widely prevalent diseases in Saudi Arabia. Health education is considered an essential component to improve knowledge and change behavior. People affected by diabetes often have inadequate knowledge about the nature of diabetes, its risk factors and associated complication. OBJECTIVES The aim of this study was to assess the awareness of the...