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9,10-Dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) is an organophosphorus compound that is used to produce fire retardants. From the chemistry perspective, it is a derivative of hypophosphorous acid as well as a derivative of phenanthrene. The reactivity of the P-H center allows for the conjugation of DOPO to many monomers.
ER1 electric trainset (Cyrillic: ЭР1) was manufactured by Rīgas Vagonbūves Rūpnīca between 1957 and 1962 for suburban commuting usage within the Soviet Union on lines electrified on 3000 V, DC. See also
These were 10-car trains consisting of 5 2-car sections (each comprising 1 power car and 1 trailer), which were permanently coupled together. This greatly improved the power-to-weight ratio (hence improving acceleration) and simplified production; the disadvantage was that train length could no longer be adjusted for traffic conditions.
In differential geometry, a one-form (or covector field) on a differentiable manifold is a differential form of degree one, that is, a smooth section of the cotangent bundle. [1] Equivalently, a one-form on a manifold is a smooth mapping of the total space of the tangent bundle of to whose restriction to each fibre is a linear functional on the ...
FcεRI is a tetrameric receptor complex that binds Fc portion of the ε heavy chain of IgE. [1] It consists of one alpha ( FcεRIα – antibody binding site), one beta ( FcεRIβ – which amplifies the downstream signal), and two gamma chains ( FcεRIγ – the site where the downstream signal initiates) connected by two disulfide bridges on ...
ER1 may refer to: ER1 (hospital) , prototype hospital envisioned for the Washington D.C. area ER1 electric trainset , manufactured by Rīgas Vagonbūves Rūpnīca from 1957 till 1962
ED4-0001. The ED4 was designed to accommodate Russia's need for a domestically produced electric train-set. Russia's most widely exploited electric trains, the ER1 and ER2 series, were produced by the Rīgas Vagonbūves Rūpnīca (RVR) plant in Latvia before the collapse of the USSR.
1,8-Diazafluoren-9-one (DFO) is an aromatic ketone first synthesized in 1950. It is used to find fingerprints on porous surfaces. [1] [2] It makes fingerprints glow when they are lit by blue-green light. [2] DFO reacts with amino acids present in the fingerprint to form highly fluorescent derivatives. Excitation with light at ~470 nm results in ...