Sentences with phrase «in aromatic molecules»

Lavender is particularly rich in aromatic molecules called esters.

Not exact matches

Aromatic molecules such as polycyclic aromatic hydrocarbons (PAHs) are known to exist in the interstellar medium owing to their characteristic infrared emission fAromatic molecules such as polycyclic aromatic hydrocarbons (PAHs) are known to exist in the interstellar medium owing to their characteristic infrared emission faromatic hydrocarbons (PAHs) are known to exist in the interstellar medium owing to their characteristic infrared emission features.

We present the discovery of benzonitrile (c - C6H5CN), one of the simplest nitrogen - bearing aromatic molecules, in the interstellar medium.

Radio astronomy is used to identify the aromatic molecule benzonitrile in the interstellar medium.

But if those aromatic hydrocarbons were treated with an acid to create aniline or another amine, after some additional steps the newly synthesized molecules very efficiently absorbed light particles from specific wavelengths in the visible spectrum.

In many foods, the high - speed spin concentrates the flavor molecules in a powerfully aromatic liquid layer that is ideal for cookinIn many foods, the high - speed spin concentrates the flavor molecules in a powerfully aromatic liquid layer that is ideal for cookinin a powerfully aromatic liquid layer that is ideal for cooking.

In the 1930s, the German theoretician Erich Hückel had claimed that certain electronic features were essential to aromatic stability; Doering and Knox set out to synthesize a group of molecules with those features.

Though benzonitrile is one of the simplest so - called aromatic molecules, it is in fact the largest molecule ever seen by radio astronomy.

NASA researchers triggered international headlines in 1996 when they discovered, among other possible indicators of life, traces of polycyclic aromatic hydrocarbons (multiringed carbon molecules found in living cells) along surface fractures in ALH84001.

«Lignin is a complex aromatic molecule that is mainly burned to make steam in a biorefinery plant, a relatively inefficient process that doesn't create a lot of value,» says Birgitte Ahring, Ph.D., the principal investigator on the project.

The brain merges all of these inputs — photons, aromatic molecules, etc. — into our subjective experience of the object in that moment.

Once the molecule is borylated, the boron substituent can be replaced by other substituents, in this case, by an aromatic molecule bearing highly soluble tetra (ethylene glycol) chains (TEG).

This 6 - atom, aromatic, ringed molecule provides a vital clue in identifying the source of a faint infrared glow permeating the Milky Way.

Some of those large molecules are like small sheets of graphite with hydrogen attached to them: we call these polycyclic aromatic hydrocarbons and they can be found in terrestrial counterparts like mothballs, for example.

Certain particle compounds may directly generate ROS in vivo because of their surface chemistry (eg, metals, organic compounds, and semiquinones) or after bioactivation by cytochrome P450 systems (eg, polycyclic aromatic hydrocarbon conversion to quinones).6, 290 a, 290 b A particle surface or anions present on otherwise more inert particles may disrupt iron homeostasis in the lung and thereby also generate ROS via Fenton reactions.291 Other PM constituents may do so indirectly by the upregulation of endogenous cellular sources (eg, nicotinamide adenine dinucleotide phosphate [NADPH]-RRB- oxidase) 292,293 or by perturbing organelle function (eg, mitochondria) by taken - up PM components.261 Particle stimulation of irritant and afferent ANS fibers may also play a role in local and systemic oxidative stress formation.294 Given the rich antioxidant defenses in the lung fluid, secondarily generated oxidization products of endogenous molecules (eg, oxidized phospholipids, proteins) or a reduction in endogenous antioxidants per se may be responsible at least in part for the state of oxidative stress in the lungs (along with instigating the subsequent cellular responses) rather than ROS derived directly from PM and its constituents.

The molecules come from phenolic, or aromatic, compounds, Henderson says, and robust food sources include those that we more often hear are rich in antioxidants: coffee, tea, colorful berries, red wine and dark chocolate.

The molecule itself is aromatic (it has a distinctive smell) and found in fruit like red raspberries, blackberries, and cranberries.

PNNL scientists found that secondary organic aerosols formed in the presence of the toxic pollutant known as polycyclic aromatic hydrocarbons (PAHs) trapped the PAH molecules inside, shielding them from degradation.