Associations of prenatal exposure to bisphenols with BMI growth trajectories in offspring within the first two years: evidence from a birth cohort study in China.

Background: Prenatal bisphenol exposure has been reported to be associated with lower birth weight and obesity-related indicators in early childhood. These findings warrant an investigation of the relationship between prenatal bisphenol exposure and the dynamic growth of offspring. This study aimed to evaluate the relationship of maternal bisphenol concentration in urine with the body mass index (BMI) growth trajectory of children aged up to two years and to identify the critical exposure periods.

[Study on luminescence properties of Eu2+ in (Sr, Ca)4Si3O8Cl4 host lattice].

Alkali earth chlorosilicate of the type Sr(4-x)Ca(x)Si3O8Cl4 was synthesized through the high temperature solid state method. According to the Van Uitert experimental equation, luminescence properties and crystal-lattice environment of Eu2+ in Sr(4-x) Ca(x)Si3O8Cl4 crystal were discussed. The possibilities of two Eu2+ emission centers, viz.