A closed loop system is an environmentally friendly setup used to extract compounds from the cannabis plant. The system is referred to as a “closed loop,” because of the assembly of interconnected ...

Scientists from the United Kingdom’s University of Nottingham and China’s Southwest Jiaotong University have developed a novel hydronic closed-loop PV cooling system for hot and arid regions. “We ...

TfL combines open and closed loop systems, using Oyster Cards, contactless card payments, and NFC Google or Apple pay, alongside physical ticketing. Transport for London (TfL) has long been regarded ...