seen on ECW open thread, an interesting China's (English) article nor far from Iwamura, in less evolved (maybe an artifact anyway).
http://www.jmcchina.org/html/2019/1/20190101.htm
The Detection of K-Ca Transmutation in the Mixture of K and Hydride Chemicals
LU Gong-xuan , ZHANG Xu-qiang , ZHEN Wen-long
Abstract: Here, we report the transmutation of K-Ca under the negative hydrogen condition (NaBH4, LiBH4 and NH3BH3) at room temperature. In all reaction systems, the amount of K+ and Ca2+ concentrations were monitored by inductive coupled plasma optical emission spectroscopy (ICP-OES) and inductive coupled plasma mass spectrometry (ICP-MS) techniques. The ICP-OES test results showed that K+ concentration was gradually decreasing, while the Ca2+ concentration was gradually increasing. In addition, by comparing the K and Ca concentrations and their isotopes from the ICP-MS results, we found the increase of 40Ca concentration accompanied by the increasing concentration of 41K in the presence of hydride under our "reaction" conditions, which implying 40Ca formation correlated to 41K.