DoorDash, a crowdsourcing food-delivery service, fared moderately well during the pandemic, thanks in large part to the countless people who signed up to be DoorDashers.

NPR is a simple count of the number of references in a patent application to a wide variety of nonpatent publications, including scientific papers and articles, brochures, books, standards, documents, patent disclosure bulletins, and so on.

give someone the cold shoulder.

In comparison with some methods of growing ZnO nanowires and nanoforests, the growth of the nanocones and the nanospikes in this work, which did not involve any organic structure-directing agents, seeding process and heating process, appeared to be simpler and less costly.