Sentences with phrase «of tiny molecules»

Gravity holds all those millions of tiny molecules that make up our atmosphere close to the planet's surface.

This includes tendons, organs and skin... as well as hormones, enzymes, neurotransmitters and all sorts of tiny molecules.

RNA is composed of tiny molecules called nucleotides that are arranged in a chain.

He was also the first to describe the role of tiny molecules in the heart — called microRNAs — which carefully titrate levels of gene activity to control the fate of cells.

The answer is that before the sunlight reaches Earth, it first has to travel through our atmosphere, which is a layer of gas made up of tiny molecules of mostly nitrogen and oxygen that surrounds our planet.

But the image resolution of the tiny molecule and its products — each only about one nanometer across — wasn't good enough to reliably identify the molecular structures.

Not exact matches

It is tempting to speculate that this tiny intruder in a Mandarin DNA molecule gave her son his offbeat fascination with a family which at the same time he wanted to repudiate, as well as his sense of the infinite possibilities of existence which he also knew could never be fulfilled.

Entities in the world are assumed to be two stages removed from the familiar systems on which the model is based: (1) gas molecules are not the «tiny elastic spheres» of the model (if we are not naive realists), and (2) «tiny elastic spheres» are not billiard balls (if we have kept negative analogy in mind).

So if our dough is too wet, guess what: the molecules of water that initially occupied some space in the dough leave a lot of tiny empty spaces after evaporation — > the dough doesn't hold together tight enough and when the dough gets dryer and dryer in the oven, it tends to fall apart once we try to handle it.

Objects are made up of very tiny molecules.

A tiny molecule harvested from a soil bacterium on Easter Island that evolved billions of years ago for no obvious purposes should have nothing to do with human beings.

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.

That approach — known as electrospray ionization — ionizes large molecules by dissolving them in a solvent and using an intense electric field to pull tiny charged droplets of solution from the end of a needle.

Water will stick even to a duck's back — if you mix in trace amounts of tiny coiled molecules called polymers, researchers report in the 13 June issue of Nature.

Researchers, including Karnik's group, have developed techniques to fabricate graphene membranes and precisely riddle them with tiny holes, or nanopores, the size of which can be tailored to filter out specific molecules.

It is relatively easy to get small pieces of dust to stick together, because of electrostatic forces and van der Waals forces (tiny forces arising from the polarity of molecules).

UNFORGETTABLE Priya Rajasethupathy has found a tiny molecule that may turn off part of the genome to allow the brain to store long - term memories.

Many scientists believe that the aging process is caused by the gradual buildup of a huge number of individually tiny faults — some damage to a DNA strand here, a deranged protein molecule there, and so on.

Unlike a black hole in space, the X-rayed atom does not draw in matter from its surroundings through the force of gravity, but electrons with its electrical charge — causing the molecule to explode within the tiniest fraction of a second.

The idea that tiny molecules affected our health, thoughts and quality of life was fascinating to me.

Because even a fairly chubby molecule is hundreds of times as small as today's tiniest transistor, it's an appealing idea.

Moving from biochemistry to molecular biology, Palatnik started investigating the role of microRNAs — tiny RNA molecules that are important in gene regulation in most life forms — in the development of the plant Arabidopsis.

To map the minute landscape of molecules, at scales as tiny as just tenths of a nanometer, and help decipher their functions, structural biologists have long relied on two tools: nuclear magnetic resonance, or NMR, spectroscopy and X-ray crystallography.

The tiniest weights are measured using nanotubes, which vibrate at different frequencies depending on the mass of the particles or molecules on them.

But rain and other forms of precipitation rub against air molecules too, and produce a tiny bit of friction.

At night the chamber is opened, allowing ambient air to diffuse through the porous MOF and water molecules to stick to its interior surfaces, gathering in groups of eight to form tiny cubic droplets.

The team coated flexible strands of silicon rubber with a mix of long chains of carbon atoms, called carbon nanotubes, and tiny bunches of silver molecules, called silver nanoparticles.

Each devised different groups of molecules with moving parts that they could control remotely, despite their tiny size.

Looking for plants that tolerate stress Inside the cells of a corn plant, tiny molecules called RNA relay messages to help with cell activity.

For the investigation at the X-ray laser, the researchers grew tiny crystals of the serotonin receptor with the molecule ergotamine attached, which is a migraine drug that targets this receptor.

Dye molecules can fall off the TiO2 particles and dissolve into tiny pockets of water that have seeped into the cell.

More work is needed to refine the tests so that they can detect tinier amounts of target molecule, and ensure the rates of false positives and negatives meet the standards required for diagnostic tests.

The second confirmed the existence of molecules and atoms by statistically showing how their random collisions explained the jerky Brownian motion of tiny particles in water.

Such quick, efficient DNA nanobots could someday help move tiny cargo, such as molecules or nanoparticles, in a nanofactory that manufactures new types of materials.

Spinhenge@home What it is: The group researches nanomagnetic molecules, which may eventually be targeted for local tumor chemotherapy and the development of tiny memory modules.

The new measuring method makes use of a modified Atomic Force Microscope: a tiny ball glued to the cantilever of the microscope will attract protein molecules.

A diagnostic technique that can detect tiny molecules signalling the presence of cancer could be on the horizon.

One theory posits that the energy freed when a chemical binds to the surface is released as heat energy in the form of tiny vibrations of the surface molecules.

Maxwell suggested that a nefarious tiny being could shuttle around molecules to decrease entropy — for example, by putting all the fast - moving molecules on one side of a box containing a gas and the slower ones on the other side.

These new nanoparticles are equipped with specially designed nanovalves that can control release of anticancer drugs from thousands of pores, or tiny tubes, which hold molecules of chemotherapy drugs within them.

Hudson's laboratory used laser light to cool tiny amounts of the reactant atoms and molecules to an extremely low temperature — one one - thousandth of a degree above absolute zero — and then levitate them in a space smaller than the width of a human hair, inside of a vacuum chamber.

The odds of randomly picking a wine molecule from the ocean is tiny — about 10 - 21 — because the volume of the bottle is so small relative to the volume of the ocean.

Like tiny superscrubbers, these charged molecules effectively scour the copper of surface imperfections providing a pristine surface on which to grow graphene.

Or take the Greek alcohol ouzo — it turns cloudy white when you add water, because it's an emulsion of tiny droplets of oil (the alcohol) destabilized by the water molecules.

The research was carried out by experts in synthetic and theoretical chemistry, materials and electron microscopy and builds on Professor Khlobystov's concept of carbon nano test tubes (World's tiniest test tubes, Guinness Book of World Records 2005), where the nanotube acts as a container for molecules.

All the tiny tubes of synthetic molecules in the lab indeed seem to contain salt or chalk dust or the like.

The approach consists of a device filled with tiny channels and cavities that DNA molecules can move in and out of, resulting in some of the familiar Tetris shapes, like the «L,» the square, and the zigzag (illustrated above: a DNA molecule, in red, occupies four cavities in a zigzag).

Such images could give a deeper understanding of chemical reactions, and may help researchers size up molecules for use as electrical components in tiny circuits.

In the new study, researchers placed tiny particles of silicon carbide (one represented by the group of tan molecules in this artist's concept) covered with graphite (hexagonal networks of gray atoms) in a vacuum chamber that duplicated the deep - space conditions surrounding many stars (temperatures between 900 and 1500 kelvins and pressures less than one - billionth that found at Earth's surface).

Only if it can trace even tiny amounts of odor molecules is it is able to find food sources, communicate with conspecifics, or avoid enemies.