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hydroxyl
hydroxyl Chem. (haɪˈdrɒksɪl) [f. hydrogen + oxygen) + -yl, repr. Gr. ὕλη matter, stuff.] The monad radical HO or OH, consisting of an atom of hydrogen in combination with an atom of oxygen, which is a constituent of a vast number of chemical compounds.1869 Roscoe Elem. Chem. xxix. 292 In the foregoi... Oxford English Dictionary
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Hydroxyl value
The analytical method used to determine hydroxyl value traditionally involves acetylation of the free hydroxyl groups of the substance with acetic anhydride The conversion between hydroxyl value and other hydroxyl content measurements is obtained by multiplying the hydroxyl value by the factor 17/560. wikipedia.org
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Hydroxyl group | Definition, Structure, & Facts | Britannica
hydroxyl group (―OH), in chemistry, a functional group with one hydrogen and one oxygen atom.An oxygen atom normally forms two σ bonds with other atoms; the water molecule, H 2 O, is the simplest and most common example. If one hydrogen atom is removed from a water molecule, a hydroxyl functional group (―OH) is generated.. Hydroxyl groups play a key role in the structure of many molecules.
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Hydroxyl ion absorption
Hydroxyl ion absorption is the absorption in optical fibers of electromagnetic radiation, including the near-infrared, due to the presence of trapped hydroxyl The hydroxyl (OH−) ion, can penetrate glass during or after product fabrication, resulting in significant attenuation of discrete optical wavelengths, wikipedia.org
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Examples of how the presence or absence 2'-hydroxyl groups influence physicochemical properties of DNA and RNA I know, for instance, that RNA is much more succetible to alkaline hydrolysis than DNA and this difference...
As user137 said, the general base abstracts a proton from the 2'OH and subsequently the 2'O- renders a nucleophilic attack on the δ+ Phosphorous, leading to the hydrolysis of the phosphodiester bond. There can be slight variations in the mechanism and the intermediates; for details see this review. ...
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Hydroxyl aluminium bis(2-ethylhexanoate)
Hydroxyl aluminium bis(2-ethylhexanoate) is a chemical substance derived from 2-ethylhexanoic acid and aluminium(III). wikipedia.org
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Hydroxyl tagging velocimetry
Hydroxyl tagging velocimetry (HTV) is a velocimetry method used in humid air flows. This laser beam is tuned to a wavelength that causes the hydroxyl molecules to fluoresce in the UV spectrum. wikipedia.org
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Dehydration Synthesis: Why does a monomer contribute a -H instead of an H atom? My Campbell's Biology 9th edition textbook says that a dehydration synthesis is a reaction in which water is produced while two monomers ...
The dash ("-") does not represent a negative charge or an electron. It simply indicates that the group of atoms ( -OH or -H ) are attached (covalently bonded) to other atoms in a molecule. So they are saying one monomer (molecule) contributes OH to the reaction and the other H. (A charge is indicate...
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Chloride hydroxyl exchanger
A chloride hydroxyl exchanger is a purported membrane transport protein responsible for the exchange of chloride and hydroxyl in the renal proximal tubule wikipedia.org
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What makes alcohol harmful to mammals? During the alcohol metabolic pathway, harmful by-products are made like acetaldehyde, hydroxyethyl, superox­ide anions, and hydroxyl radicals. How do these toxic compounds harm o...
Superoxide radicals , basically damage the lipid bilayers. affecting the efficient gradient. for example H+ ion gradient across lipid bilayer in ETC is very important. this gradient is affected if superoxide radicals are present.
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Polynucleotide 5'-hydroxyl-kinase
Other names in common use include: ATP:5'-dephosphopolynucleotide 5'-phosphatase PNK polynucleotide 5'-hydroxyl kinase (phosphorylating), 5'-hydroxyl polynucleotide kinase, 5'-hydroxyl polyribonucleotide kinase, 5'-hydroxyl RNA kinase, DNA 5'-hydroxyl kinase, DNA kinase, polynucleotide kinase, wikipedia.org
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羟基
但根据IUPAC定义，hydroxy与hydroxyl意义并不同：术语hydroxyl仅指羟自由基（hydroxyl radical，·OH）；而官能团－OH才称作hydroxy group，即羟基。 羟基团以共价键结合羰基（氧＝碳）的碳原子产生羧基（–），就是限定基团的羧酸。 wikipedia.org
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CN102838712A - Preparation method of hydroxyl ... - Google Patents
The invention discloses hydroxyl-terminated aqueous core shell emulsion for anticorrosive paint, and a preparation method of the hydroxyl-terminated aqueous core shell emulsion. Hydroxyl-terminated aqueous anticorrosive acrylate emulsion adopts a core-shell structure, the shell layer is hydroxy phosphate ester type acrylic acid molecules, the core layer is polyurethane modified acrylic ester ...
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A planar conformation and the hydroxyl groups in the B ... - MilliporeSigma
A planar conformation and the hydroxyl groups in the B and C rings play a pivotal role in the antioxidant capacity of quercetin and quercetin derivatives. by Mohamed Moalin, Gino P F van Strijdonck, Maud Beckers, Geja Hagemen, Paul Borm, Aalt Bast, Guido R M M Haenen. Molecules (Basel, Switzerland). Read more related scholarly scientific articles and abstracts.
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Phase Stability and Hydroxyl Vibration of Brucite Mg(OH)2 at High ...
Brucite Mg(OH)2 is an archetypal hydrous mineral and it has attracted a great deal of attention. However, little is known about the evolution of hydroxyl groups in brucite with respect to subduction fluids. We carried out Raman measurements up to 15.4 GPa and 874 K via an externally heated diamond anvil cell, investigating the stability of brucite under the conditions relevant to subducting slabs.
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