Sentences with phrase «chemical compound»

The process of adding sugar to a chemical compound is called glycosylation.

«Our findings with rodents suggest that that it may be possible to reduce or even prevent learning and memory impairments through a derivative of the same chemical compound found in beer,» he said.

Biologist Jay Keasling of the University of California in Berkeley has shown how this species of yeast can be engineered to produce artemisinic acid, a key chemical compound in anti-malaria drugs, normally extracted from the wormwood tree.

As the most fundamental chemical compound, H2 has several impressive properties.

Not a symphony, perhaps, but a melodic array of notes and chords — not as background music, but describing the infrared spectrum of an unknown chemical compound.

This discovery set off a years - long research effort by several labs to figure out how the harmful chemical compound was forming.

MTBE (methyl tertiary - butyl ether) is a chemical compound that is manufactured by the chemical reaction of methanol and isobutylene.

Except with onions, a chemical compound is what stimulates the eyes» glands so they release tears.

If you need more incentive to indulge in a glass of wine, here's more good news about the health benefits of resveratrol, a chemical compound found in grapes and some other foods.

Naringin, a natural chemical compound found in grapefruit, tastes bitter.

According to Bonn - Miller, a number of products also contained a significant amount of THC — the chemical compound in cannabis responsible for making a person feel «high» — which has been shown cause cognitive impairment and other adverse health effects.

Mario Chemnitz, scientist at Leibniz IPHT and first author of the publication, explains the unusual effect as follows: «The fiber core is filled with carbon disulfide, a liquid chemical compound with a very high refractive index.

Then candidate substances, culled from chemical compound libraries, are dropped onto the receptors, and scientists look for evidence of a reaction.

Right now, somewhere in the world — in a petri dish in Baltimore, maybe, or in the salivary glands of a laboratory - bred mosquito in Seattle, or in the bloodstream of a villager in Ghana — resides a chemical compound that could help eradicate human history's biggest killer.

Johns Hopkins researchers, working with mice, say they have identified a chemical compound that reduces the risk of dangerous, potentially stroke - causing blood vessel spasms that often occur after the rupture of a bulging vessel in the brain.

Johns Hopkins scientists say a previously known but little studied chemical compound targets and shuts down a common cancer process.

Researchers from universities in the UK and Australia found that that neurotransmitter (a chemical compound that sends impulses between nerve cells and affects everything from sleep to aggression in humans) spurs a cascade of Dr. Jekyll - to - Mr.

When the sample produced a chemical compound they were not able to identify, the researchers tried high - resolution mass spectrometry to determine the chemical compound's components but were unable to figure out its exact molecular structure.

Yale chemistry professor Patrick Holland and his team designed a new chemical compound with key properties that help to explain nitrogenase.

In the November issue of Animal Behaviour, a team reports the identification of a chemical compound known as myristyl acetate in the male plant bug spermatophore, a capsule containing sperm that is transferred to the female during copulation.

In chemistry, a hydrocarbon is any chemical compound that consists only of the elements carbon (C) and hydrogen (H).

Scientists at San Diego — based Genomatica, Inc., have announced success in manipulating the bacteria to directly produce butanediol (BDO), a chemical compound used to make everything from spandex to car bumpers, thereby providing a more energy - efficient way of making it without oil or natural gas.

However, these changes were not linked to changes in any key chemical compound, but rather «a result of an interplay of subtler changes in multiple aroma active substances in each wine,» notes corresponding author Dr Andrea Buettner.

One found that a chemical compound caused valve fibroblasts to become active, similar to what is observed during valve disease, but the other study indicated that the same compound prevented the cells from calcifying, indicating that a key piece of the valve disease puzzle was missing.

They cranked them up even more — to 200 microns per second (equivalent to 100 of the nanomachine's body lengths)-- by also adding hydrazine, an ammonia - derived chemical compound that accelerates hydrogen peroxide oxidation.

A chemical compound is a chemical substance consisting of two or more different chemically bonded chemical elements, with a fixed ratio determining the composition.

Using data captured by ALMA in Chile and from the ROSINA instrument on ESA's Rosetta mission, a team of astronomers has found faint traces of the chemical compound [Freon - 40]--(CH3Cl), also known as methyl chloride and chloromethane, around both the infant star system IRAS 16293 - 2422, about 400 light - years away, and the famous comet 67P / Churyumov - Gerasimenko (67P / C - G) in our own Solar System.

In a research article published November 20, 2013, in the journal Nature, Shokat's team describes a novel chemical compound that fits into a previously unknown pocket in K - Ras and interferes with function of the enzyme.

Shokat and his team have designed a chemical compound that fits inside this pocket and inhibits the normal activity of mutant K - Ras, but leaves the normal protein untouched.

The researchers designed and synthesized two molecules based on a fragrant organic chemical compound called coumarin.

Itxaso San Román, Luis Bartolomé and Rosa María Alonso allowed the chemical compound to age under normal conditions, without ageing it artificially, which is what happens in other methods, and studied its evaporation speed.

Whether waste paper or raked leaves, the plant remnants still contain cellulose, a sugar in greenery that bonds with the chemical compound lignin to furnish a plant's structure.

«This is not too surprising since antibiotics are not a thermally stable chemical compound.»

Either way, this finding means that increasing levels of carbon dioxide can affect trees both indirectly through global warming and directly as a chemical compound.

A chemical compound using superheavy element seaborgium is the first to show effects linked to Einstein's theory of relativity

Regarding the June letter from James Bramson of the American Dental Association in response to «Our Preferred Poison,» your March feature about mercury: Mr. Bramson's choosing to draw an analogy between table salt (a chemical compound) and mercury fillings (an amalgam, as he states) would make anyone with an elementary knowledge of chemistry feel less than reassured.

Researchers have created the first chemical compound that requires Einstein's theory of relativity to explain its behaviour, thanks to the presence of a superheavy element.

When they bind a chemical compound drifting through the air, the nerve cell sends an impulse to the brain, leading ultimately to the perception of a smell.

The agency released data from these test wells in November that confirmed high levels of carcinogenic chemicals such as benzene, and a chemical compound called 2 Butoxyethanol, which is known to be used in fracking.

«The aluminum occurs in pure metallic form, on its own, not in a chemical compound with other elements.

«With virtually no energy input, we convert a mixture of plant - derived fatty esters and bio-ethylene, another chemical compound, into fuel,» the professor says.

The injectable drug was inspired by the digestive system of the Gila monster, which needs to eat only three or four times a year; a chemical compound in the lizard's saliva called exendin - 4 seems to jump - start its pancreas after its multimonth fasts.

Using this strategy, researchers can engineer specific cells to produce a surface receptor that binds to a chemical compound known as CNO, a derivative of clozapine.

«Dandelion uses latex to protect its roots against insect feeding: Single chemical compound in latex sap of plant deters cockchafer larvae.»

Serotonin is a chemical compound that acts as a neurotransmitter thought to be responsible for maintaining mood balance.

Ectonucleoside triphosphate diphosphohydrolase 2 (E-NTPDase2) is an ectoenzyme that, along with family members E-NTPDase1 and E-NTPDase3, is known to degrade the chemical compound ATP (adenosine triphosphate) into ADP (adenosine diphosphate) for the purpose of sending messages to cells to change the fleet of proteins they are producing.

Now, in a study published February 13 in Science Signaling, Lin's team discovered that a chemical compound that activates ATF6 also converts patient - derived stem cells into blood vessels.

The bacteria's secret weapon is a chemical compound that stops DNA formation in its tracks.

The researchers, who released their findings in the current issue of the Journal of Functional Foods, suggest that cruciferous vegetables — such as broccoli, brussels sprouts and cabbage — contain an organic chemical compound called indole glucosinolates, which breaks down into other compounds, including indolocarbazole — ICZ — in the stomach.

But evidence for the chemical compound was buried in archived data from a large radio telescope, Maureen Palmer of Catholic University of America in Washington, D.C., and colleagues discovered.