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The domain speedtest.net has been used to host a speed test since 2000, and was acquired by Ookla in 2006. [12] As of 2011, Ookla claimed 80% market share and was one of the top 1000 most popular websites. At the time, Ookla derived its revenue primarily from fees paid by companies to license custom speed test and proprietary testing software.
Oxygen transmission rate (OTR) is the measurement of the amount of oxygen gas that passes through a substance over a given period. It is mostly carried out on non-porous materials, where the mode of transport is diffusion, but there are a growing number of applications where the transmission rate also depends on flow through apertures of some description.
O2+ may refer to: Dioxygenyl (O + 2) Doubly ionized oxygen (O 2+ This page was last edited on 27 November 2021, at 11:27 (UTC). Text is available under the ...
Using the O2 sensor signal, the ECU can operate the engine with an air–fuel ratio very close to 14.7:1, which is the ideal operating mixture for a three way catalyst to be effective. [3] Robert Bosch GmbH introduced the first automotive lambda sensor in 1976, [ 2 ] and it was first used by Volvo and Saab in that year.
The O2 Wireless Box IV (available to new "O2 Premium" customers during 2010) is a rebadged Thomson SpeedTouch TG587nv2, which has additional support for 802.11n, dual antennas, and also has two USB ports for connection to an external USB hard disk for sharing of files direct to the wifi or Ethernet network, or printer sharing.
The dioxygenyl ion, O + 2, is a rarely-encountered oxycation in which both oxygen atoms have a formal oxidation state of + 1 / 2 .It is formally derived from oxygen by the removal of an electron:
This test does not only validate the cell. If the sensor does not display the expected value, it is possible that the oxygen sensor, the pressure sensor (depth), or the gas mixture F O 2, or any combination of these may be faulty. As all three of these possible faults could be life-threatening, the test is quite powerful. [6]
Telefónica Germany operates second, third and fourth generation mobile networks, allowing customers to use GPRS, EDGE, UMTS up to HSPA+ and LTE for data connections. Most of O2 plans are available both in a pre- and post-paid version, including the all-in-one-flatrates called o2 o and o2 on for enterprise customers.