Sentences with phrase «of scent molecules»

A machine called a mass spectrometer measured levels of scent molecules as far as 4.5 meters away from the flowers.

When the production of the scent molecules benzyl benzoate or isoeugenol was blocked, the insects ate several times more of the flowers than they did when they were presented with petunias that hadn't been genetically altered.

Not exact matches

The flat, pungently - scented, purple crystals which are the most common form of elemental iodine consist of diiodine molecules packed in layers.

Ian Baldwin of the Max Planck Institute for Chemical Ecology in Jena, Germany, and colleagues genetically modified petunia plants to silence genes responsible for producing specific scent molecules.

Neuroscientists can test odor - sensing neurons» responses to chemical «smells» by exposing them to scent molecules in liquid gradients, which overlap like the blurry rainbow of food coloring shown here.

Instead of just letting scent compounds waft into the air, the plants use a particular molecule called a transporter protein to help move the compounds along, a new study found.

Perfumers and astronomers can detect and recreate scents based on the chemical signatures of the molecules in the air, even if that air is very very far away.

Nearly identical molecules can have quite different scents — synthetic musk was accidentally created from a tweaking of TNT molecules in an explosives lab — and radically different structures

Most scents are composed of many odorants; a whiff of chocolate, for example, is made up of hundreds of different odor molecules.

Nearly identical molecules can have quite different scents — synthetic musk was accidentally created from a tweaking of TNT molecules in an explosives lab — and radically different structurescan smell similar, like the bitter almond tinge common to both marzipan and cyanide.

But it is the frequency of vibration, not the shape, that determines the scent of a molecule.

Air pollutants interact with and break down plant - emitted scent molecules, which insect pollinators use to locate needed food, according to a team of researchers led by Penn State.

Methods: In this new approach, the team began with an atmospheric aerosol sample that contains thousands of molecules formed in the reactions of ozone, a common atmospheric oxidant, with limonene, a molecule emitted by various types of trees, which is responsible for the citrus scent found walking among the orange trees.

The groundbreaking nanotechnology - inspired sensor, devised by Prof. Fernando Patolsky of Tel Aviv University's School of Chemistry and Center for Nanoscience and Nanotechnology, and developed by the Herzliya company Tracense, picks up the scent of explosives molecules better than a detection dog's nose.

A standard rule of thumb is to diffuse for 15 to 20 minutes, which is more than enough time to saturate a standard - size room with scent molecules.

Essential oils have powerful healing properties even via a quick sniff out of the bottle; their scent molecules travel up into the brain and balance the nervous system.

Marijuana has relatively higher concentrations of cannabinoids, terpenes and other molecules leading to its intense scent and coloring, and these constituents interact with the human body through the endocannabinoid system, which then interacts with other physiological systems.

Raspet's art consists of small batches of chemical formulations he's tweaked molecule by molecule to vary slightly in flavor in scent.

The real explanation for the spread of scent of course is basic convection in a fluid medium, with the different weights and effects of the actual scent molecules which is alchohol and water, the alchohol having a triggering effect on water at the surface making it even lighter than air than it usually evaporates.

While the front part of a dog's nose is almost entirely committed to respiration, the rest is committed to olfaction — the sense of smell — and since there are hundreds of millions more olfactory receptors in a dog's nose compared to a human's nose, a dog is able to smell more and detect a scent in much smaller quantities: «This means two things: A dog definitely experiences smells, odors — volatile molecules — that we don't,» Alexandra Horowitz, assistant professor at Barnard College and author of Inside of a Dog, told Modern Farmer.