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单词 quinone
例句 quinone
Known to scientists as 6PPD quinone, it’s a chemical compound that prevents tires from cracking and breaking down. Help save salmon from the dangers of stormwater 2022-11-11T05:00:00Z
The molecule was renamed ubiquinone because of its ubiquity and because it contains a type of chemical structure known as a quinone. A powerful cell-protection system prevents cell death by ferroptosis 2019-10-20T04:00:00Z
One enzyme essential to the survival of P. falciparum, but not found in humans, is quinone oxidoreductase. Japan’s global connectors 2019-03-19T04:00:00Z
For example, electron transfer from the cell cytoplasm to a quinone molecule in the lipid membrane is similar to the steps of a conventional electron-transport chain. The electrifying energy of gut microbes 2018-09-11T04:00:00Z
In a recent study, researchers tinkered with a molecule called a quinone and extended its life span in a battery from days to years. Top stories: Trump’s pick for science, a sun-chasing probe, and a better flow battery 2018-08-03T04:00:00Z
He and his colleagues report the creation of a new quinone called DBEAQ, which they also call the Methuselah molecule after the long lived biblical character. This ‘flow battery’ could power green homes when the sun goes down and the wind stops blowing 2018-07-31T04:00:00Z
Aziz was inspired by plant photosynthesis to test quinones, a family of organic molecules common in plants. Electrochemistry: Liquid assets : Nature : Nature Publishing Group 2015-10-27T04:00:00Z
Last year, researchers led by Harvard University materials scientist Michael Aziz created a high-energy storage flow battery that used organic compounds called quinones as the electron-storing components of one of its two electrolytes. A cleaner, greener way to store solar and wind energy 2015-09-24T04:00:00Z
The Harvard scientists built a prototype last year that instead uses organic molecules known as quinones. Want a Solar-Powered Home? Here's a New Battery That Won't Ignite 2015-09-24T04:00:00Z
In January this year, a team including Aziz announced that cheap organic chemicals called quinones could be used in a flow battery, partnered to a standard liquid electrode such as bromine. The rechargeable revolution: A better battery 2014-03-05T18:50:39.954Z
Previous quinone based flow batteries degraded by similar amounts every day. This ‘flow battery’ could power green homes when the sun goes down and the wind stops blowing 2018-07-31T04:00:00Z
Derivatives of Ligno-cellulose.—By reaction with chlorine jute yields the derivative C19H18Cl4O9, soluble in alcohol, and in acetic acid; this derivative has the reactions of a quinone chloride. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 5 "Cat" to "Celt"
In the team’s previous battery, both the quinone and bromine were dissolved in acidic solutions. A cleaner, greener way to store solar and wind energy 2015-09-24T04:00:00Z
In 1877, however, Nietzki worked out a very good process for the preparation of quinone from aniline by oxidation with sulphuric acid and bichromate of soda in the cold. Coal and What We Get from It
He suggests that the term “quinone” theory be abandoned, and replaced by the Umlagerungs theory, since this term implies some intermolecular rearrangement, and does not connote simply benzenoid compounds as does “quinonoid.” Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago"
“They did a very good job in designing the quinone molecules,” says Tianbiao Liu, a chemist a Utah State University in Logan, who also works on flow batteries. This ‘flow battery’ could power green homes when the sun goes down and the wind stops blowing 2018-07-31T04:00:00Z
The products are phenol and pyrocatechol, with some quantity of an amorphous product probably formed by condensation of a quinone with the phenolic products of reaction. Researches on Cellulose 1895-1900
According to this patent, only 400 gm. of quinone are required for the conversion into leather of 400 kilos pelt, drum tannage being preferable. Synthetic Tannins
These oxygen derivatives of benzenoid hydrocarbons form a special group of compounds known as quinones. Coal and What We Get from It
As soon as the quinone starts to separate, the residue in the flask is transferred to a beaker and cooled in an ice bath. Organic Syntheses
With this exception no other quinone derivative is used in the colour industry till we come to the hydrocarbons of the anthracene oil. Coal and What We Get from It
The quinone with which we are at present concerned is anthraquinone. Coal and What We Get from It
Before leaving the phenols, mention must be made of the quinones, the use of which for tanning purposes was first protected by Ger. Synthetic Tannins
Thus there is quinone itself, or benzoquinone, which is benzene with two atoms of oxygen replacing two atoms of hydrogen. Coal and What We Get from It
The benzene distillate is yellow and contains some quinone. Organic Syntheses
The quinone is purified, converted into a sulpho-acid, and the sodium salt of the latter on fusion with alkali gives alizarin, which is dihydroxy-anthraquinone. Coal and What We Get from It
The hydrazines combine with quinones and analogous compounds with the elimination of water, the oxygen coming from the quinone, and the hydrogen from the hydrazine. Coal and What We Get from It
It was the illustrious Wöhler who in 1844 first prepared the compound in a state of purity, and established its relationship to quinone. Coal and What We Get from It
There are also isomeric quinones of the naphthalene series known as naphthaquinones. Coal and What We Get from It
The compound is readily prepared by the action of sulphurous acid or any other reducing agent on the quinone. Coal and What We Get from It
This placed the production of quinone on a manufacturing basis, so that when a demand for hydroquinone sprung up, the wants of the photographer were met by the technologist. Coal and What We Get from It
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更新时间:2025/3/13 8:45:47