This paper presents the effect of recharge and irrigation on the variation of nitrate in the groundwater of wadi Djendjen (Jijel—North-East Algeria) where the intensive use of fertilizers and the recycling of irrigation water have resulted in an alarming increase in nitrate concentrations. In this plain, the groundwater is increasingly polluted by excessive use of fertilizers in agriculture. Indeed, in several areas of irrigated vegetable crops, water contains nitrate levels which exceed the allowed standards for human consumption. The present study consists of a spatio-temporal monitoring of nitrate in groundwater in relation to the dilution caused when charging during the rainy season, on the one hand, and to the leaching by irrigation water during the dry season, on the other hand. The results obtained show an increase in the contamination of groundwater by nitrates and their seasonal variations under the effects of recharge and irrigation.
Client software on mobile
devices that can cause the remote control perform data mining tasks and show
production results is significantly added the value for the nomadic users and
organizations that need to perform data analysis stored in the repository, far
away from the site, where users work, allowing them to generate knowledge
regardless of their physical location. This paper presents new data analysis
methods and new ways to detect people work location via mobile computing
technology. The growing number of applications, content, and data can be
accessed from a wide range of devices. It becomes necessary to introduce a
centralized mobile device management. MDM is a KDE software package working
with enterprise systems using mobile devices. The paper discussed the design
system in detail.