نتایج جستجو برای: concentration index

تعداد نتایج: 760208  

Journal: :African Journal of Mathematics and Computer Science Research 2019

2003
J. H. Choi F. G. Shi A. Margaryan

Linear and nonlinear refractive index, Abbe number, electronic energy gap and oscillator strength are reported for a new series of (Mg, Ba)F2-based fluorophosphates glasses (MBBA system) doped with rare earth dopants (Er , Nd) in the concentration range of 6.67x10 2.86x10 (ions/cm) and 2.5x10 1.25x10 (ions/cm), respectively. The linear refractive index is found to increase with increasing dopan...

Background & Aims: The proper concentration of fluoride in drinking water can prevent dental caries and the concentration of above the standard causes dental fluorosis. The aim of this study was to determine the relationship between fluoride concentration in the drinking water with DMFT index and dental fluorosis in 11-12 years old students in rural areas of Oshnavieh. Materials & Methods...

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