61 research outputs found
Evaluation of ground water quality using multiple linear regression and structural equation modeling
A methodology for characterizing ground water quality of watersheds
using hydrochemical data that mingle multiple linear regression and
structural equation modeling is presented. The aim of this work is to
analyze hydrochemical data in order to explore the compositional of
phreatic aquifer groundwater samples and the origin of water
mineralization, using mathematical method and modeling, in Maknassy
Basin, central Tunisia). Principal component analysis is used to
determine the sources of variation between parameters. These components
show that the variations within the dataset are related to variation in
sulfuric acid and bicarbonate, sodium and cloride, calcium and
magnesium which are derived from water-rock interaction. Thus, an
equation is explored for the sampled ground water. Using Amos software,
the structural equation modeling allows, to test in simultaneous
analysis the entire system of variables (sodium, magnesium, sulfat,
bicarbonate, cloride, calcium), in order to determine the extent to
which it is consistent with the data. For this purpose, it should
investigate simultaneously the interactions between the different
components of ground water and their relationship with total dissolved
solids. The integrated result provides a method to characterize ground
water quality using statistical analyses and modeling of hydrochemical
data in Maknassy basin to explain the ground water chemistry origin
Optimisation et durabilité du traitement et de l’utilisation des eaux usées traitées en agriculture.
Mesure des symptômes d’hypersomnolence dans l’hypersomnie idiopathique : échelle de sévérité de l’hypersomnolence
Profil de la pression artérielle et de la fréquence cardiaque des 24 heures dans le syndrome des jambes sans repos
Impact of artificial recharge on groundwater recharge estimated by groundwater modeling (case study: Jarmeh flood spreading, Iran)
Déterminants d’une durée de sommeil allongée : étude en condition standardisée bed-rest sur 32 heures
Absence de carence en ferritine au niveau central dans le SJSR et les MPJ associés à la Narcolepsie de Type 1
دراسة مستوى المياه الجوفية لتحديد الخصائص البنيوية للمائدة المائية. تحليل معطيات حوض المكناسي بوسط البلاد التونسية
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