In this paper, we find all positive squarefree integers d satisfying that the Pell equation X~2-dY~2=±1 has at least two positive integer solutions(X, Y) and(X
The stratigraphic successions exposed in Wadi El Mizeira have been dated through the analysis of the calcareous nannofossil assemblages. The results of this stu
Watershed characteristics and land use/land cover study is necessary, for improved decision-making and for the resource management strategies. The methodology n
The present study describes variation of peak linear depolarization ratio (LDR) with wind around the cloud altitude using simultaneous observation of winds and