Not exact matches
Producing methamphetamine gives off toxic fumes, and Bridger's laser technology, which is still in development, detects these gases by measuring the amount
of light
absorbed by the gas
molecules.
Golden Rice is a strain that is genetically modified by molecular techniques (and therefore labeled a genetically modified organism or GMO) to produce β - carotene, a precursor
of vitamin A. Vitamin A is an essential component
of the light -
absorbing molecule rhodopsin in the eye.
Interestingly, the soluble fiber in oats attaches to cholesterol
molecules and transports them out
of the body rather than being
absorbed into the bloodstream, which can help lower cholesterol and reduce the risk
of heart disease.
The laser generates a specific wavelength
of light that is
absorbed in a stoichiometric fashion by glucose
molecules — the more glucose
molecules; the more photons are
absorbed.
Regular cane sugar (sucrose) is made
of two - sugar
molecules bound tightly together — glucose and fructose in equal amounts.The enzymes in your digestive tract must break down the sucrose into glucose and fructose, which are then
absorbed into the body.
These
molecules are
absorbed by your blood, and when they get close to the breast they are transported into the milk making cells
of the breast via diffusion.
To maintain this level, your blood creates its own buffer system consisting
of molecules that
absorb excess hydrogen ions if things get too acidic, or release them if the blood is too basic.
These
molecules initially comprise just a small fraction
of the gas, but they can
absorb heat from the surrounding gas and get rid
of it by emitting light, thereby cooling the cloud enough for stars to form.
The calorie reductions were calculated individually through the ratio
of isotopes
absorbed by the participants»
molecules and tissues over 2 weeks, a technique that accurately pinpoints a weight - maintenance calorie level.
These sacs
of water and RNA will also grow,
absorb new
molecules, compete for nutrients, and divide.
The result is ammonium nitrate and ammonium sulfate,
molecules that condense with others
of their kind, plus water, to form tiny particles in the air that
absorb sunlight and block visibility — smog.
Scientists, in collaboration with ICI Australia, experimented with hundreds
of versions
of the MAA
molecule, knocking off water - soluble groups and adding others to enhance the ruggedness
of the light -
absorbing part
of the
molecule.
A team led by Stuart Licht at the Technion - Israel Institute
of Technology in Haifa has come up with a new cathode made from unusual iron - based
molecules — iron (VI), or «super-iron,» compounds — that
absorb more electrons than manganese dioxide.
The researchers focused on a hybrid membrane that is part polymer and part metal - organic framework, which is a porous three - dimensional crystal with a large internal surface area that can
absorb enormous quantities
of molecules.
The
molecule gets rid
of some
of the
absorbed energy by heating up the material around it, and this generates a pressure wave.
At this high pressure, nitrogen lost all signs
of being a
molecule — infrared light that normally is
absorbed by nitrogen - nitrogen bonds passed right through the sample, they report in the 7 August Physical Review Letters.
The team used calculations based on quantum mechanical equations to predict the chances
of a CO2
molecule absorbing different colours
of light, which have defined energies.
The young chemist did not know why the resulting color was so vivid; the ability
of molecules to
absorb photons at specific wavelengths based on the structure
of their shared electron bonds would not be worked out for another fifty years.
They analyzed the samples for colored dissolved organic matter, which contains light -
absorbing molecules from the breakdown
of plant polymers such as lignin.
«This suggested that the negatively charged indole acetic acid hormone
molecule is
absorbed into the root hair cell together with an excess amount
of positive ions,» Hedrich says.
To interpret their results, however, it is necessary to have a very precise answer the question «How much radiation does one
molecule of CO2
absorb?»
When the quantum dots
absorb ambient light, they transfer some
of that energy to nearby dye particles, causing the crystal violet to release a kind
of high - energy oxygen
molecule that kills microbes.
During a transit, some starlight passes through the planet's atmosphere, and
molecules in the atmosphere
absorb specific frequencies
of that light.
As a transiting planet passes in front
of its star, some starlight passes through the planet's atmosphere and continues on toward Earth — minus certain spectral frequencies that have been
absorbed by
molecules in the atmosphere.
High - resolution x-rays
of the antibodies showed that this theory made sense: The antibodies include sites that can bind oxygen
molecules, others that can hold water
molecules, and an amino acid where UV light can be
absorbed.
Molecules in the intervening gas clouds absorb radio waves at specific frequencies determined by the type of m
Molecules in the intervening gas clouds
absorb radio waves at specific frequencies determined by the type
of moleculesmolecules.
Tinetti says the earlier studies could be a product
of the planets» bright sides cooking to the same temperature throughout, which makes atmospheric
molecules less likely to
absorb radiation from below.
When a
molecule absorbs a photon — the fundamental particle
of light — electrons in the molecular system are promoted from a low - energy (ground) state to a higher - energy (excited) state.
To get a different view, astronomer Giovanna Tinetti and her colleagues at the European Space Agency and University College London focused instead on the light grazing the atmosphere
of HD 189733 b. Tinetti had predicted that water would
absorb more light at the longer wavelength
of 5.8 microns (thousandths
of a millimeter) than at 3.6 microns, in contrast with other
molecules such as methane and ammonia.
This
molecule, which the researchers call pteronenone, had a structure similar to that
of chemicals which
absorb the Sun's damaging ultraviolet rays and are carried by other planktonic creatures (Journal
of Organic Chemistry, vol 60, p 780).
The light harvesting antenna
molecules, called N - alkyl -2-aminoterephthalates, can be designed to
absorb specific colors
of light when incorporated in the MOF.
And to know what to look for — water
molecules absorb and emit different wavelengths
of light when they're superhot and furiously jiggling — Bernath heated a tube
of water in his lab to 2800 degrees.
The wavelengths
of the
absorbed light reveal how the target
molecule's chemical bonds vibrate, which in turn tells about the types and positions
of atoms in the
molecule, the kinds and strength
of bonds among atoms and the symmetry
of the
molecule, Milo says.
This chiral light is
absorbed differently by
molecules of opposite handedness.
Many
molecules absorb light
of this spectral region in a very characteristic way — they can be considered to have an «optical fingerprint.»
He recently has focused on a specific skin - barrier protein called filaggrin, which is broken down into a
molecule called urocanic acid — the most potent
absorber of UVB light in the skin, according to Elias.
When exposed to a concentration gradient
of glucose — more sugar in one spot than another — the polymersomes
absorb the sugar
molecules and break them down.
Some observations
of how cosmic
molecules emit and
absorb light at ultraviolet wavelengths have hinted that the fine structure constant, responsible for the strength
of electromagnetism, is not the same throughout the universe.
The first stage
absorbs light in the form
of photons and uses it to produce energy storage
molecules, which are then used to power the second stage, which fixes carbon from the air into carbon - based sugars, such as sucrose and starch.
Ocean acidification in particular, caused as the ocean
absorbs carbon dioxide from the atmosphere, is a grave concern for stony corals, because it makes it harder for the animals to passively precipitate skeletons made
of calcium carbonate, the same
molecule found in antacids for heartburn and indigestion.
Temperatures in the low stratosphere rise because
of molecules absorbing radiation from the star (right).
This atmospheric layer includes
molecules that
absorb ultraviolet and visible light, acting as a kind
of «sunscreen» for the planet it surrounds.
Which
molecules are found in the atmosphere on aerosols will determine whether they
absorb or reflect sunlight, affecting the temperature
of the planet.
For example,
molecules in a planet's atmosphere will
absorb a certain amount
of energy from starlight and radiate the rest back out.
Rebecca Rapf, Veronica Vaida and colleagues at the University
of Colorado propose that a class
of compounds called α - keto acids can be photo - activated by sunlight and drive reactions with
molecules that do not themselves
absorb sunlight.
As this light passes through the exoplanet's atmosphere, some
of it is
absorbed by atmospheric
molecules.
When the beam aligned with the
molecule's axis, the
molecule absorbed the beam's energy and emitted a telltale burst
of fluorescence.
Like all other
molecules, carbon dioxide
molecules absorb only certain colors
of light, producing a unique pattern
of dark features in the spectrum.
By
absorbing a photon
of light, photosensitive
molecules can reposition chemical bonds and thus create a «kink» in the polymer chain.
In most animals, the main job
of the stomach is to break down large food
molecules into smaller ones, so that they can be
absorbed into the blood more easily.