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Ultra-high vacuum (often spelled ultrahigh in American English, UHV) is the vacuum regime characterised by pressures lower than about 1 × 10 −6 pascals (1.0 × 10 −8 mbar; 7.5 × 10 −9 Torr). UHV conditions are created by pumping the gas out of a UHV chamber.
Ion pumps are commonly used in ultra-high vacuum (UHV) systems, as they can attain ultimate pressures less than 10 −11 mbar. [1] In contrast to other common UHV pumps, such as turbomolecular pumps and diffusion pumps, ion pumps have no moving parts and use no oil. They are therefore clean, need little maintenance, and produce no vibrations.
Right Here Right Now is a short film written and directed by Anand Gandhi. It earned critical acclaim and wide audience appreciation in the following years at the Indo-British Film and Video Festival. It has achieved a near-cult status in the Indian parallel cinema.
UHV may refer to: Ultra-high vacuum, the vacuum regime characterised by pressures lower than about 10 −7 pascal; Ultra-high voltage, a classification of overhead power line with an operating voltage of higher than 800 kV; University of Houston–Victoria, a university in Victoria, Texas, US
This mast has two UHF antennas for receiving signals from different directions. The lower antenna is a bowtie array. The upper antenna is a Yagi design.. UHF television broadcasting is the use of ultra high frequency (UHF) radio for over-the-air transmission of television signals.
[75] [76] In response, YouTube co-founder Jawed Karim posted the question "why the fuck do I need a google+ account to comment on a video?" on his YouTube channel to express his negative opinion of the change. [77] The official YouTube announcement [78] received 20,097 "thumbs down" votes and generated more than 32,000 comments in two days. [79]
The UHV grid will aid China's plan of electrification and decarbonization, [15] and enable integration of renewable energy by removing the transmission bottleneck that is currently limiting expansions in wind and solar generation capacity whilst further developing the market for long-range electric vehicles in China.
The original Mercon (M2C185-A) Transmission Fluid was introduced in January 1987. Over the years, the original Mercon was supplanted by Mercon "V", Mercon "SP", Mercon LV, and Mercon ULV, which is the latest automatic transmission fluid.