But it wasn't until Apple introduced the iPad in 2010 that tablets became more than just a curiosity. Hot on the heels of Apple's runaway success in the tablet market was Google. Google introduced the Android operating system a few months after Steve Jobs unveiled the iPhone.
NSQ: realtime distributed message processing at scale. NSQ is a realtime message processing system designed to operate at bitlyâs scale, handling billions of messages per day. It promotes distributed and decentralized topologies without single points of failure, enabling fault tolerance and high availability coupled with a reliable message delivery guarantee.
1. A ventilationâperfusion (VQ) scan is a nuclear medicine scan that uses radioactive material (radiopharmaceutical) to examine airflow (ventilation) and blood flow (perfusion) in the lungs. The aim of the scan is to look for evidence of any blood clot in the lungs, called pulmonary embolism (PE).A VQ scan is carried out in two parts. In the first part, radioactive material is breathed in and pictures or images are taken to look at the airflow in the lungs.In the second part, a different radioactive material is injected into a vein in the arm, and more images taken to see the blood flow in the lungs.he aim of the scan is to look for evidence of any blood clot in the lungs, called pulmonary embolism (PE). A VQ scan is carried out in two parts. In the first part, radioactive material is breathed in and pictures or images are taken to look at the airflow in the lungs.