KNN-Based Lead-Free Piezoelectric Ceramics with High and Enhanced a Donor-Acceptor Codoping Strategy.

The wide application of KNN-based lead-free piezoelectric ceramics is constrained by the contradictory relationship between its mechanical quality factor and piezoelectric constant. From an application point of view, searching for chemical composition with enhanced piezoelectric constant () and mechanical quality factor () is one of the key points of KNN-based ceramics. In this work, KNN-based ceramics with enhanced and high values were obtained by the solid solution method a donor-acceptor codoping strategy.

Endurance exercise causes mitochondrial and oxidative stress in rat liver: effects of a combination of mitochondrial targeting nutrients.

Aims: Endurance exercise causes fatigue due to mitochondrial dysfunction and oxidative stress. In order to find an effective strategy to prevent fatigue or enhance recovery, the effects of a combination of mitochondrial targeting nutrients on physical activity, mitochondrial function and oxidative stress in exercised rats were studied.

Main Methods: Rats were subjected to a four-week endurance exercise regimen following four weeks of training.