Sentences with phrase «of the water molecules on»

In 100 characters: Ending the debate, scientists definitively measured the stability of water molecules on an oxide

Another factor is the handling of the water molecules on their long travel through your body, from the intestines to the urine.

Not exact matches

The author notes that one can not predict the properties of water at a macroscopic level on the basis of knowledge of water molecules.

But that's not the point, the point is that there were noisy people outside my house and all I wanted to do was open the window and tell them to quiet down because I can count on three fingers the number of times I've been home to witness the sound of hundreds of millions of water molecules hitting the roof over my head.

The recent discovery of hydrogen - bearing molecules, possibly including water, on the moon has explorers excited because these deposits could be mined if they are sufficiently abundant, sparing the considerable expense of bringing water from Earth.

Q: Supernovas produce most of the heavy elements, but what about non-element molecules, like water and ammonia and many others we find naturally on Earth?

Then, the drop recoils from the water - repellent molecules on the leaf's surface and snaps back, launching part of the drop into the air.

The formation of ice in the air depends on water molecules latching together in a very specific hexagonal pattern that resembles three - dimensional chicken wire.

For example, instead of using a water - based substance as a basis for its cellular processes, a Martian organism might use hydrogen peroxide, a molecule similar to perchlorate that is abundant on Mars.

It could also enhance our understanding of water — one of the most important molecules for life on our planet.

A cubic yard of air contains hundreds of thousands of microscopic specks, but only about one in a million possesses the exact molecular geometry that will organize water molecules on its surface to spawn an ice crystal.

A little mineral crystal can act as a template, coaxing water molecules on its surface to organize into the hexagonal lattice of an ice crystal.

For example, hydrophilic polymers are often used to protect metals from fouling; water molecules accumulate on this polymer layer, which protects the metal against the adhesion of unwanted molecules or organisms.

Dr Russo said: «With this procedure, we have found that what makes water behave anomalously is the presence of a particular arrangement of the water's molecules, such as the tetrahedral arrangement, where a water molecule is hydrogen - bonded to four molecules located on the vertices of a tetrahedron.

«When water freezes slowly, we can think of ice as being built from water molecules the way you build a brick wall, one brick on top of the other,» said Claudiu Stan, a research associate at the Stanford PULSE Institute at SLAC and partner in the project.

The new observations suggest water ice, mixed with organic molecules, is «widespread on the surface of the asteroid», Humberto Campins of the University of Central Florida in Orlando reported at a meeting of the American Astronomical Society's Division of Planetary Sciences in Fajardo, Puerto Rico, last week.

Studies of hydrogen molecules in the Venusian atmosphere by NASA's Pioneer - Venus probe indicate that the planet once had liquid water on its surface, perhaps even expansive oceans.

According to their multi-scale analyses, a single ion has an influence on millions of water molecules, i.e. 10,000 times more than previously thought.

Water's behavior was tested with three different approaches: ultrafast optical measurements, which revealed the arrangement of molecules on the nanometric scale; a computer simulation on the atomic scale; and measurement of the water's surface structure and tension, which was done at the macroscopic lWater's behavior was tested with three different approaches: ultrafast optical measurements, which revealed the arrangement of molecules on the nanometric scale; a computer simulation on the atomic scale; and measurement of the water's surface structure and tension, which was done at the macroscopic lwater's surface structure and tension, which was done at the macroscopic level.

Furthermore, the researchers found that by altering the size of the ripples, and the type of molecules on the surface, they could achieve fast and controlled motion of molecules other than water..

As one water molecule evaporates through a pore in a leaf, it exerts a small pull on adjacent water molecules, reducing the pressure in the water - conducting cells of the leaf and drawing water from adjacent cells.

The researchers found that, in an aqueous solution, amino acids usually hook up with others in their own string because of the randomness with which water - hating amino acid molecules are interspersed among water - loving ones on the same protein.

In aqueous fluids, amino acid residues that have polar sidechains — components that can have a charge under certain physiological conditions or that participate in hydrogen bonding — tend to be located on the surface of the protein where they can interact with water, which has negatively and positively side charges to its molecule.

The water - hating molecules are prevented from combining with their counterparts on other strings by the action of water - loving molecules, which form little pockets of protection around neighboring water - hating molecules.

IN THE CLOUDS Many of the water droplets that make up clouds get a size boost from carbon - containing molecules that assemble on the droplets» exterior, new research suggests.

Chemist Daniel Nocera, head of the M.I.T.'s Solar Revolution Project, focused on one side of the equation: splitting water into its constituent hydrogen and oxygen molecules.

While straining spaghetti is a simple example, the filtering of specific molecules on the nanoscale level for biomedical applications and for production of clean water is a complex and costly process.

Water molecules can exist as one of two isomers, depending on how the spins of their two hydrogen atoms are orientated: ortho, where the nuclear spins are parallel to one another, and para, where the spins are antiparallel.

It seems likely that the highly localised heating on the surface of nanoparticles somehow disrupts hydrogen bonding within the ethanol — water mixture, allowing greater separation of ethanol from water molecules at higher concentrations of ethanol.

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.

The wave is not a water molecule, rather it is based on the movement of many molecules.

MacDonnell also has worked on developing new photocatalysts for hydrogen generation, with the goal of creating an artificial photosynthetic system which uses solar energy to split water molecules into hydrogen and oxygen.

Since RNA is hydrophilic, or «likes water,» the molecules on the nanodiamond surface swell with excess hydration and weaken the heterogeneous dynamics of the molecules.

The existence of microbial life on Mars remains highly controversial, but recent evidence of water, complex organic molecules, and methane in the Martian environment, combined with findings from the 1976 Viking mission, have led to the conclusion that existing life on Mars is a possibility that must be considered, as presented in an article in Astrobiology.

Using spectral readings from telescopes at the Keck Observatory in Hawaii, Hand has found high levels of oxidative chemicals such as sulfate, oxygen, sulfur dioxide and hydrogen peroxide on Europa's surface, which are produced as ionizing radiation from Jupiter scours it, splitting apart water molecules and sulfur compounds in the uppermost layers of its ice.

In addition, water molecules on the protein as well as the solution where it exists, e.g. the cell's cytoplasm, add even more layers of motion complexity to the system.

They arise when pressure from the wind starts a pressure hump, which passes on its energy to adjacent water molecules in the direction of the wind.

When that happened, the photons froze in place on one of the wires, like water molecules losing heat until crystallizing into ice.

If there were too much UV light, no water could survive on the surface because the water molecules would break up and escape through the top of the atmosphere as hydrogen and oxygen gas.

The researchers found that if the silica tends to have hydrophilic silanol groups on its surface, it attracts water molecules, in effect forming a «soft barrier» of water molecules that reactants would have to overcome to somehow penetrate to proceed with the desired process or reaction.

The spacecraft's sensitive spectrometer was able to register the chemical signatures not only of water vapor but also of hydrogen cyanide, carbon monoxide, and carbon dioxide — all precursors of the more complex molecules that scientists think eventually gave rise to life on Earth.

She was suggesting that Europa's ocean was not its only source of liquid water; the moon also harbored hidden lakes far closer to vital molecules on the surface, perhaps close enough to support miniature habitable ecosystems.

Simulations by Nora de Leeuw of University College London and colleagues suggest that the dust grains from which Earth formed had such a tenacious grip on water that they could have held onto the molecules despite the high temperatures.

Astronomers have known about Europa's biological trifecta for almost two decades, yet there have always been doubts: For Europa to support life, the vital molecules on the surface need to mix with the water and energy below, and there is a giant slab of ice lying in between.

This hypothesis is also based on the assumption that for the ancestors of recent insects, the ability to detect odor molecules in the air rather than dissolved in water was of vital importance.

The collisions of the pollen grain with the water molecules have two important effects on the motion of the grain.

That's because the ions of dissolved salt hold on to so many water molecules that few are left to support microbial life.

This process of smoothing the original water isotope variations from precipitation is dependent on the temperature, as the water molecules in vapour form are more mobile at warmer temperatures.

This process of transforming the fluffy snow into hard ice is physical and both the thickness and the movement of the water molecules are dependent on the temperature.

The craft is designed to dig into the cementlike layer of ice that researchers believe lies buried a few inches below the surface in the planet's polar regions, scanning for signs of past liquid water and organic compounds, the carbon - rich molecules that make life on Earth possible.