Mechanism of vitamin C alleviating the immunotoxicity of 17α-methyltestosterone in Carassius auratus.

Background: In recent years, the use of endocrine-disrupting chemicals (EDCs) has become increasingly common, leading to severe environmental pollution and harm to aquatic organisms. 17α-Methyltestosterone (MT) is a synthetic androgen that can cause immunotoxicity in aquaculture, affecting fish health. To address this issue, this study aimed to investigate the effect of Vitamin C (VC) on MT-induced immunotoxicity and determine the optimal VC supplementation.

ZrNO Coating-Improved Corrosion Resistance for the Anodic Dissolution Induced by Cathodic Transient Potential.

Developing a corrosion-resistant and electrically conductive coating on metallic bipolar plates is essential to mitigate the performance degradation induced by the high cathodic transient potentials (CTPs) in the start-up/shut-down (SU/SD) processes of polymer electrolyte membrane fuel cells (PEMFCs). Herein, a zirconium oxynitride (ZrNO) coating prepared by atomic layer deposition was used to improve the corrosion resistance of 304 stainless steel (304 SS) toward anodic dissolution at various CTPs. Triangular potential pulses were applied to the specimens to simulate potential variations at the cathode side of the PEMFCs at SU/SD stages.