background since the discovery of helicobacter pylori, several clinical reports have demonstrated that h. pylori infection has emerged as a new cause of refractory iron stores in children. we carried out a systematic literature review to primarily evaluate the existing evidence on the association between childhood h. pylori infection and iron deficiency anemia (ida) and secondly, to investigate...

Abstract Over the period 1990–2015, many countries experienced a reduction in extreme absolute poverty and an increase relative poverty. As result, global trend of “overall” income poverty, which combines may depend on arbitrary normative choices such as priority given to absolutely poor over relatively poor. This article proves that, if one assumes that individual who is poorer than only poor,...

Definition. We say that the absolutely continuous spectrum of the operator H is essentially supported by a set containing [0,∞), if the spectral projection E(Ω) of H corresponding to any set Ω ⊂ [0,∞) is different from zero E(Ω) 6= 0 as soon as the Lebesgue measure of Ω is positive. While the potential V0 is a function of x ∈ Rd, we shall also study the dependence of V0 on the spherical coordin...