Abstract Recent advances in the developments of optical atomic clocks have enabled 10 −18 -level frequency comparisons between fibre-linked clocks. Therefore, chronometric leveling with an uncertainty on order 1 cm has become possible, based general theory relativity. Since measurement does not deteriorate increasing fibre length, applications geodesy, particularly unification height reference ...

OBJECTIVE To assess whether, in girls with early onset of puberty, low birth weight is a risk factor for rapid progression to menarche and for short adult stature. DESIGN Longitudinal clinical assessment of 54 Catalan (Northern Spanish) girls followed from early onset of puberty (onset of breast development between 8.0 and 9.0 years of age) to final height. The timing of menarche and the fina...

introduction: malnutrition remains the most serious children health problem and the most main cause of children mortality in the world health organization (who) eastern mediterranean region. nearly one-third of children in the region are either underweight or stunted, and more than 30% of the population suffers from micro-nutrient deficiencies.the aim of this study is to determine the prevalenc...