The Parthenon is the best known building on the Acropolis and was the temple of Athena, the virgin goddess of wisdom and the arts and the patron goddess of Athens. Inside this 100 by 230 ft. architectural marvel was a 40 ft. gold and ivory statue of Athena Parthenos (the virgin).
From Wikipedia, the free encyclopedia. MQTT (formerly MQ Telemetry Transport) is a publish-subscribe based light weight messaging protocol for use on top of the TCP/IP protocol. It is designed for connections with remote locations where a small code footprint is required or the network bandwidth is limited.QTT-SN is a variation of the main protocol aimed at embedded devices on non-TCP/IP networks, such as ZigBee. Historically, the 'MQ' in 'MQTT' came from IBM's MQ message queuing product line.
Complexometric titration (sometimes chelatometry) is a form of volumetric analysis in which the formation of a colored complex is used to indicate the end point of a titration. Complexometric titrations are particularly useful for the determination of a mixture of different metal ions in solution.An indicator capable of producing an unambiguous color change is usually used to detect the end-point of the titration.DTA forms an octahedral complex with most 2+ metal cations, M 2+ , in aqueous solution. The main reason that EDTA is used so extensively in the standardization of metal cation solutions is that the formation constant for most metal cation-EDTA complexes is very high, meaning that the equilibrium for the reaction: