In this article we propose to analyze the factors of the locations of service stations and their impact in the spatial organization of the city of Lubumbashi. We have adopted the descriptive explanatory method; Using a GPS, the service stations were located. The quadrat method allowed us to highlight the spatial model of the city and the Quantum Geographic Information System (QGIS) software enabled us to develop the service station map. After analysis of the quadrat and the map we deduced the following: intense places of activity (business center); The major roads and intersections attract more petroleum operators to establish service stations within the city. Affordable price; The quality of the petroleum product; Proximity to the road; The speed of delivery of petroleum products attracts customers to service stations. Their environmental impacts have been elucidated and the risks associated with their radiation are great because they have no buffer zones and their reconciliation is a permanent fire hazard in a city where fire fighting vehicles are almost non-existent. Where the town hall has a responsibility for regulating points of sales of petroleum products in order to save human and material lives.

Diabetes has become one of the main causes disability and death in the world; it’s part of the main risks of blindness and kidness faiture diabetes is the basis of leg amputation and cardiovascular disease. The purpose of this study is to identify the characteristics of type two diabetes in Lubumbashi city and to understand what would be the etiology of this disease. People with diabetes are vulnerable to potentially disabling and deadly health problems. Bay way causes of illustration chronic hyperglycemia cause neuropathy, retinopathy and nephropathy etc. Lipid peroxidation is the basics of the increased risk of cardiovascular disease in type two diabetics’ patients. This study consists to characterize diabetes by measuring blood glucose, cholesterol, triglycerides, height density lipoprotein-cholesterol, low density-cholesterol, L’aspartate aminotransférase and Alanine amino transférase assayed on a VISUAL ANALYZER (model : VISUAL/60VB0357,N°series : 1553, maker : SECOMAMCE) ; it’s also prospective. As for distribution the number of diabetics comes from Lubumbashi and katuba ships, it represents 25% of our sample and presents a dyslipidemia; it is highly correlated with insulino durability and hperinsulenemia.

Nowadays, the management of water capital becomes an alarming situation, worrying the authorities of many countries. The purpose of this study is to assess the capacity of the Kisanga II aquifer in order to serve the population of the city of Lubumbashi with water of sufficient quality and quantity in order to reduce the shortage of water. Hydrological observations were made over a period from 2014 to 2015. They reveal the behavior of the aquifer during the critical periods (dry season, dry episodes). From these observations, the authors describe the morphological and morphometric characteristics of the catchment drained by the river KISANGA II; evaluate the reserves of the aquifer of the basin, using the flood hydrograph raised by them; Then they discuss the significance of these results obtained by applying the empirical formulas of MAILLET & WERNER, TISON & DUNSQUIT and then explain the index of storage and the rate of renewal; establishing the optimum conditions for the use of this aquifer in case of abusive exploitation and finally providing advice to the managers.