Fengzi Zhou
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View article: Effect of Defects on Piezoelectric Properties of Sm-Doped K0.47Na0.53NbO3 Ceramics
Effect of Defects on Piezoelectric Properties of Sm-Doped K0.47Na0.53NbO3 Ceramics Open
Rare earth element (Sm)-doped potassium sodium niobate (KNN)-based ceramics are fabricated using spark plasma sintering method and their properties are investigated. The results show that all the samples crystallize in a typical perovskite…
View article: Secular Trends in the Median Age at Menarche and Spermarche Among Chinese Children From 2000 to 2019 and Analysis of Physical Examination Indicators Factor
Secular Trends in the Median Age at Menarche and Spermarche Among Chinese Children From 2000 to 2019 and Analysis of Physical Examination Indicators Factor Open
Objectives This research aimed to understand the long‐term trends in the age of menarche among girls and spermarche among boys, and to analyze the factors that may influence the onset of menarche and first spermarche. Methods The study was…