Sentences with phrase «organic molecules on»

In their research, published in Nature Materials in March, they showed they could align the small crystals within the plastic polymer by applying a thin layer of organic molecules on to the surface.

Data collected by the Dawn spacecraft during its analysis of the dwarf planet Ceres has revealed the presence of organic molecules on the 590 mile (950 km) object, meaning it could potentially host microbial life, according to research published this week in the journal Science.

Asteroids and comets appear to be a much more important suppliers of organic molecules on Mars than expected.

Data collected by the Dawn spacecraft during its analysis of the dwarf planet Ceres has revealed the presence of organic molecules on the 590 mile (950 km) object, meaning it could potentially host microbial life, according to research published this...

«It is so exciting to discover complex organic molecules on an accretion disk around a baby star,» says Chin - Fei Lee at ASIAA.

This could be good news for any life under the ice: such movements would deliver organic molecules on the surface to oceans that are otherwise completely sealed off.

To achieve this, the team fabricated an ideal heterostructure consisting of a superconducting atomic layer and a layer of highly ordered organic molecules on top of the atomic layer.

«Since nanoparticles started to be implemented in the first prototype devices, people have asked what's going on at the surface and how we can adjust properties by changing the organic molecules on the surface,» says Zherebetskyy.

But Titan is particularly intriguing because it has abundant organic molecules on its surface.

Previous hunts for life, including the experiments on the Viking landers, looked for organic molecules on Mars's surface.

At the moment of impact, a thin layer of organic molecules on the surface of each fiber freezes up, locking the sturdy strands in place.

Not exact matches

More amazingly, we now know that beneath the crust of Enceladus is a global ocean of liquid saltwater and organic molecules, all being heated by hydrothermal vents on the seafloor.

So it is no longer necessary to explain how complex organic molecules could have originated on Earth — they didn't!

Matter does not control or direct itself, yet science as it progresses is gradually uncovering a sort of organic unity within the universe in which atoms become molecules, molecules link to form chemicals that form proteins, these link to form DNA, simple life forms evolve into more complex life forms, and so on.

For all entities, elementary particles, atoms, molecules, and so on, are organic unities, each integrating into itself organic unities smaller in size with the differences in size being unproblematical between each level, above or below.11

I am not one of those and therefore, I can not form molecules which may become organic, and which may eventually — with added energy from solar rays on a planet which is capable of supporting it — evolve» endless form most beautiful and most wonderful.»

«What we have described as globalization is remarkably close to Teilhard de Chardin's planetization, in which «[mankind, born on this planet and spread over its entire surface, come [s] gradually to form round its earthly matrix, a single, major, organic unity, enclosed upon itself.4 Thus the globalization of humankind could lead to the formation of a new kind of living entity — a social organism — on the same cosmic principle as that by which atoms join to form molecules, molecules join to form mega-molecules, mega-molecules unite to form living cells, and innumerable cells constitute an organism.

Hitherto, in the eyes of a Science too much accustomed to reconstruct the world on one spatial axis extending in a line from the infinitely small to the infinitely great, the larger molecules of organic chemistry, and still more the living cellular composites, have existed without any defined position, like wandering stars, in the general scheme of cosmic elements.

First the vitalization of matter, associated with the grouping of molecules; then the hominization of Life, associated with a super-grouping of cells; and finally the planetization of Mankind, associated with a closed grouping of people: Mankind, born on this planet and spread over its entire surface, coming gradually to form around its earthly matrix a single, major organic unity, enclosed upon itself; a single, hyper - complex, hyper - centrated, hyperconscious arch-molecule, co-extensive with the heavenly body on which it was born.

He worked on the organic synthesis of molecules able to recognize and bind with other, smaller molecules, a phenomenon called molecular recognition, which had won Donald J. Cram, Jean - Marie Lehn, and Charles J. Pedersen the Nobel Prize in chemistry in 1987.

We found that the particles seen in our images, which were droplets of ocean only hours earlier, bore evidence of large organic molecules and compounds that indicated hydrothermal activity similar to that observed at deep - sea vents on Earth's seafloor.

In the early 1970s, astronomers discovered that space was full of complex organic molecules, some of them forming part of the comets and meteorites that occasionally crash - land on Earth.

A prototype metal - free flow battery developed by engineer Michael Aziz and colleagues at Harvard University relies on the electrochemistry of naturally abundant, small organic molecules to store electricity generated from renewable, intermittent energy sources.

These saturated organic molecules are formed in interstellar space and are preserved on the surfaces of dust grains.

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.

Geneticists and information scientists have built and are building models for the transition of organic molecules to self - replicating living organisms, based on theories of Earth's early development provided by astronomers, geologists, and oceanographers and on the evidence of fossilized microorganisms discovered by paleontologists.

Cyanide compounds are very reactive, so reactions on early Earth could have led to the more complex organic molecules that life needed (Geophysical Research Letters, DOI: 10.1029 / 2009gl040252).

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.

The Methods: Photochemical modeling by a Caltech team indicates that ethane, a hydrocarbon detected on Titan by both of the Voyager spacecraft and the European Infrared Space Observatory, is created when solar ultraviolet light breaks down methane, a minor component of Titan's nitrogen - rich atmosphere, into a stew of organic molecules that form a dense orange - brown smog.

To build their transistor, Jan Hendrik Schn of Bell Laboratories in New Jersey and colleagues, who describe their findings in the current issue of the journal Nature, allowed many thousands of organic molecules to assemble themselves onto a gold film like bristles on a brush.

«It will allow organic chemists to focus on creating new molecules,» he says.

SAN FRANCISCO — NASA's Curiosity rover has caught a whiff of methane in Mars» atmosphere and has for the first time detected organic molecules in rocks on the planet's surface.

On reaching the surface, methane can react with other organic molecules to form complex chemistry.

One chemist has a new strategy to scan for life on other worlds: bypass organic chemistry in favour of any molecules too complicated to form spontaneously

To construct the solar cell, the semiconductor molecules are deposited as thin films on glass with the same production methods used by organic light - emitting diode manufacturers.

Recently Berkeley Lab scientists used this method to calculate the absorption spectrum and confirm what several experimental results have been hinting — that the element berkelium breaks form with its heavy element peers by taking on an extra positive charge when bound to a synthetic organic molecule.

The photochemical processes taking place in Titan's atmosphere, astrobiologists believe, may provide clues of how organic molecules — and eventually living things — were generated on the primitive earth.

But the size of the observed bloom could mean that current estimates of the rates of so - called primary production — the production of organic molecules that results from phytoplankton consuming nutrients and photosynthesizing — on the Arctic continental shelf may be as much as 10 times too low, the team reports online today in Science.

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

Other molecules may help explain the origins of the organic compounds that gave rise to life on Earth.

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.

The latter focuses on zeolites and metal — organic frameworks: sponge - like materials with regularly repeating holes in their crystal structures that can trap gas molecules and could be used to store methane or carbon dioxide.

As on Earth, another challenge would be keeping the solar panels clean, in this case of organic molecules created in Titan's atmosphere that would otherwise reduce their efficiency.

In York, inspired by the «beauty and symmetry» of the dendritic organic molecules he had worked on for his postdoc, Smith and his lab members worked to create similar molecules.

The organic compounds we find on comets are a start, but more complex molecules could have been created during impact.

At present, most instruments on astrobiology missions look for habitable conditions, small organic molecules and other «biosignatures» that generally could not be formed without life.

They suspect that the way the olfactory system is organized has little to do with how an organic chemist might organize molecules (for instance, by the number of carbon atoms on each molecule); instead, it more closely resembles the complex way that chemicals are associated in the real world.

Meyer, a chemist at University of North Carolina at Chapel Hill and director of its Energy Frontier Research Center in Solar Fuels, noticed that two separate groups of researchers working on two separate parts of the photosynthetic reaction happened to be using the same class of catalyst — ones with an atom of the metal ruthenium surrounded by organic molecules.

Most drugs on the market today are small molecules, active organic compounds with a structure and weight so minute that they can be ingested and pass more easily through cell membranes.

«We don't know yet how the organic molecules and inorganic nanoparticles interacted,» Kotov said, «or how chirality evolved to become left for amino acids and on right for sugars.