https://www.selleckchem.com/products/stm2457.html We sought to clarify the psychological profile of experimentally induced nostalgia, compared to two other modes of thinking about one's past-reflection and brooding-also experimentally induced. We tested both British and Chinese participants. Our main hypothesis was that nostalgia's profile is more positive in terms of six psychological benefits and seven autobiographical memory functions. The results were consistent with the hypothesis. In regard to psychological benefits, nostalgia (vs. reflection and brooding) increased positive affect, self-esteem, self-continuity, social connectedness, and meaning in life. Furthermore, nostalgia increased optimism relative to brooding (but not reflection). In regard to autobiographical memory functions, nostalgia (vs. reflection and brooding) led to higher boredom reduction, conversation, intimacy maintenance, and death preparation, as well as lower bitterness revival. Nostalgia also elevated teach/inform relative to brooding (but not reflection). The findings were similar for British and Chinese participants.We review concepts involved in describing the chemodynamic features of nanoparticles and apply the framework to gain physicochemical insights into interactions between SARS-CoV-2 virions and airborne particulate matter (PM). Our analysis is highly pertinent given that the World Health Organisation acknowledges that SARS-CoV-2 may be transmitted by respiratory droplets, and the US Center for Disease Control and Prevention recognises that airborne transmission of SARS-CoV-2 can occur. In our theoretical treatment, the virion is assimilated to a core-shell nanoparticle, and contributions of various interaction energies to the virion-PM association (electrostatic, hydrophobic, London-van der Waals, etc.) are generically included. We review the limited available literature on the physicochemical features of the SARS-CoV-2 virion and identify knowledge gaps. Despite the lack of q