Mohmad Nasir, I.; Ameram, N.; Ali, A.; Mohamad Amini, M. H.; Ibrahim, N. I.; Hassan, S. R. <sup>29</Sup>Si Solid-State NMR Spectroscopy of Guanine-Modified Rice Husk Silica (RHACGua). Malays J Bioeng Tech 2025, 2, 54-59.