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In organometallic chemistry, a metallacycle is a derivative of a carbocyclic compound wherein a metal has replaced at least one carbon center; [2] [3] this is to some extent similar to heterocycles. Metallacycles appear frequently as reactive intermediates in catalysis, e.g. olefin metathesis and alkyne trimerization.
Sondor is a manufacturer of Audio Video equipment located in Zollikon, Switzerland until 2017. Sondor was founded in 1952 by Willy Hungerbuehler. Sondor started as a manufacturer of 16 mm film and 35mm film magnetic film equipment. They are noted as inventing the standard for bi-phase interlocking pulse signals to sync sound to film.
Metacyclic group. In group theory, a metacyclic group is an extension of a cyclic group by a cyclic group. That is, it is a group G for which there is a short exact sequence. where H and K are cyclic. Equivalently, a metacyclic group is a group G having a cyclic normal subgroup N, such that the quotient G / N is also cyclic.
MetaCyc. The MetaCyc database is one of the largest metabolic pathways and enzymes databases currently available. The data in the database is manually curated from the scientific literature, and covers all domains of life. MetaCyc has extensive information about chemical compounds, reactions, metabolic pathways and enzymes.
The San Diego Automotive Museum in Balboa Park in San Diego, California is a museum containing a collection of cars and motorcycles illustrating the history of the American automotive culture. The San Diego Automotive Museum is a non-profit corporation under IRS section 501 (c) [1] It is housed in the former California State Building, which was ...
e. An electric bicycle, e-bike, electrically assisted pedal cycles, or electrically power assisted cycles [1] is a motorized bicycle with an integrated electric motor used to assist propulsion. [2] [3] Many kinds of e-bikes are available worldwide, but they generally fall into two broad categories: bikes that assist the rider's pedal-power (i.e ...
Dubai. Key people. Francis Davidson, CEO. Revenue. US$603 million (2023) [1] Website. www .sonder .com. Sonder Holdings Inc. manages short-term rentals, such as apartment hotels, in North America, Europe, and Dubai. [2] [3] It was founded in Montreal, Canada in 2014 and since 2016 has been based in San Francisco, California.
Ferrofluid is a liquid that is attracted to the poles of a magnet. It is a colloidal liquid made of nanoscale ferromagnetic or ferrimagnetic particles suspended in a carrier fluid (usually an organic solvent or water). [1] Each magnetic particle is thoroughly coated with a surfactant to inhibit clumping. Large ferromagnetic particles can be ...
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