Final answer:
The exact title of the study on gold-silver alloy nanoparticle-incorporated pitaya-type silica nanohybrids cannot be ascertained from the provided references. Additional information or a database search would be needed to find the specific title.
Step-by-step explanation:
The student is asking for the title of a specific study about gold-silver alloy nanoparticle-incorporated pitaya-type silica nanohybrids. Based on the provided references, none of the articles directly reference a study with that exact title. In the field of nanotechnology and drug delivery, there have been various studies on the development of nanoparticle systems for targeting and treating cancer, as evidenced by the work done on porous silicon nanoparticles for drug delivery, gold nanoparticles for tumor imaging and therapy, and other nanoparticulate systems.
However, to locate the study in question about gold-silver alloy nanoparticle-incorporated pitaya-type silica nanohybrids, additional information or a search through scientific databases with the provided key phrases would be necessary. Without a specific reference to this title in the provided literature, the exact title cannot be ascertained from the given information.