Building materials are a natural resource that humankind has used since time immemorial to improve living conditions. The origin of these materials, as well as their chemical composition, compels us to examine their radiological characteristics in a city with a high concentration of radioactive minerals such as uranium and its decay products. To address radiation problems in homes and buildings in the city of Kolwezi, given that a large portion of these materials originates from artisanal mining sites or industrial waste, this study aims to be educational by providing insights into the various radiological characteristics of the quarry known as the Kananga-East deposit. The study encompasses an assessment of radioactivity (dose rate) and the analysis, using X-ray fluorescence spectrometry (XRF), of 50 samples from the different formations observed in the quarry. The results indicate that 97% of the samples have a gamma index (Ig) < 1, suggesting a low contribution to ambient natural radioactivity. However, two samples (HKK23 and JK17) slightly exceed the threshold of 1, requiring particular vigilance. The article concludes that the materials from Kananga-East do not constitute a significant radiological hazard for end users, but recommends careful management of atypical areas.

The approach to new information and communication technologies spares no area of ​​life; road surveillance is one of the activities that requires special attention given the significant increase in the number of motor vehicles in circulation involving regular checks of on-board documents by elements of the traffic police.In the context of the town of Kolwezi in the Democratic Republic of Congo where we observed numerous traffic jams caused by elements of the Road Traffic Police who, to identify the vehicles in order with the on-board documents, they must check for each vehicle stopped piece by piece, and this causes delays for the drivers in order who sometimes undergo the same check several times in a day at several checkpoints, to this is added the hassle during the check, which causes many incidents on the road. public highway.Thus, through this study, we are proposing the computerization of the road traffic police service to solve the problems related to the control of on-board documents.