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The attachment of these capping/stabilizing agents slows and eventually stops the growth of the particle. [5] The most common capping ligands are trisodium citrate and polyvinylpyrrolidone (PVP), but many others are also used in varying conditions to synthesize particles with particular sizes, shapes, and surface properties. [6]
Polyvinylpyrrolidone (PVP), also commonly called polyvidone or povidone, is a water-soluble polymer compound made from the monomer N-vinylpyrrolidone. [1] PVP is available in a range of molecular weights and related viscosities, and can be selected according to the desired application properties.
3-Methyl-alpha-PVP (3-Me-PVP, O-2480) is a substituted cathinone derivative with stimulant effects, [1] which has been sold as a designer drug. It was first identified in Sweden in June 2023. It was first identified in Sweden in June 2023.
A chemical weapon agent (CWA), or chemical warfare agent, is a chemical substance whose toxic properties are meant to kill, injure or incapacitate human beings.About 70 different chemicals have been used or stockpiled as chemical weapon agents during the 20th century, although the Organisation for the Prohibition of Chemical Weapons (OPCW) has an online database listing 35,942 chemicals which ...
In many cells these pits and complexes begin to concentrate in one area of a cell. Cytochemically, this appears as patches of label on the cell surface (patching). Eventually, the patches coalesce to form a cap at one pole of the cell (capping). Not all cells form caps, but most do form patches.
The critical temperature and pressure of ammonia are 132.2 °C and 111 bar. In these conditions, it is possible to obtain a range of amides, imides, and nitrides. ...
A capping enzyme (CE) is an enzyme that catalyzes the attachment of the 5' cap to messenger RNA molecules that are in the process of being synthesized in the cell nucleus during the first stages of gene expression. The addition of the cap occurs co-transcriptionally, after the growing RNA molecule contains as little as 25 nucleotides.
Capping may refer to: the creation of five-prime (5') caps in a cell nucleus Capping enzyme; Cap (sport), making an appearance in a game at international level; Ambulance chasing, the practice of lawyers seeking clients at a disaster site; Jakugo, or capping phrase, a response to a Zen kōan; Capping stunt, a New Zealand university student prank