Enhanced NH-SCR activity of Cu-SAPO-34 by regulating Si distribution an interzeolite conversion strategy.

An interzeolite conversion (IZC) method was developed for the rapid synthesis of Cu-SAPO-34 from SAPO-37, achieving isolated Si distribution and optimized Cu states. The resulting Cu-SAPO-34 exhibited exceptional NH-SCR performance, with over 90% NO conversion from 200-600 °C due to proper acidity and Cu status generated from the isolated Si.

[Expression of voltage-gated potassium channel Kv3.4 in oral squamous cell carcinoma].

Objective: To evaluate the expression of voltage-gated potassium channel Kv3.4 and to determine its significance in oral squamous cell carcinoma (OSCC) and precancerous lesions.

Methods: Immunohistochemical SP methods were performed to detect the expression of Kv3.