Sentences with phrase «for chemical elements»

Importantly, the method works even for chemical elements present at very low concentrations, some of which are particularly useful for unveiling magma history with unprecedented detail.

Until now, the prevailing hypothesis has said that as stars evolve, metals (astronomers» term for any chemical elements heavier than hydrogen and helium) in the swirling disk around them form tiny «seeds» that attract other matter and slowly grow into planets.

On 17 February 1869, Mendeleyev jotted down the symbols for the chemical elements, putting them in order according to their atomic weights.

A new study carried out suggests that if we want to find proof of alien life on Mars we should first look for the chemical element vanadium.

Not exact matches

If the process is so well understood that it leaves no room for doubt or for alternative explanations, then when was the last time the scientists were able to create artificial life, i.e. assemble a living cell out of a bunch of chemical elements?

The heavy chemical elements required for life (carbon, oxygen, nitrogen, phosphorous, and so forth) took several billion years of cooking time at the heart of stars before supernovas eventually dispersed them throughout space.

Yeast is a living plant microorganism; self - rising flour has a chemical leavener, baking powder, in it which is a quick - rise element for cakes and cookies.

We provide an extensive range of chemical analyses on plant, soil and water samples for inorganic nutrients, trace elements and heavy metals.

I asked for titanium as even the best grade surgical steel is still a chemical broth and titanium is lighter, stronger and a single element thus limiting the contamination as the new bits wear over time.

Pregnant ladies need to be on the look out for a little chemical culprit in hair dye, and that element is called ammonia.

This new finding fills in a long - missing piece in the puzzle representing our galaxy's chemical evolution, and is a big step forward for astronomers trying to understand the amounts of different chemical elements in stars in the Milky Way.

The chemical element lithium has been found for the first time in material ejected by a nova.

For example, a Teflon coating could be modified with nanoparticles to control adhesion, improve mechanical or thermal stability, incorporate antimicrobial or chemical recognition elements, or create gas or ion - permeable barriers.

Nearly all mass market devices rely on microchips of the chemical element silicon, on which manufacturers etch ever smaller transistors — essentially electrical switches that can be used to fashion logic circuits for computers.

They're also interested in investigating such processes for the biorecovery of valuable or scarce metal elements in other chemical forms.

When they erupt, the stars spew out their guts, seeding the cosmos with chemical elements necessary for life to exist.

An exhibition of contemporary art gets the chemical elements to speak for themselves — but it's hard to understand their message

A Cologne working group involving Prof. Carsten Münker and Dr. Elis Hoffmann and their student Sebastian Viehmann (working with Prof. Michael Bau from the Jacobs University Bremen) have managed for the first time to determine the isotope composition of the rare trace elements Hafnium and Neodymium in 2.7 - billion - year - old seawater by using high purity chemical sediments from Temagami Banded Iron Formation (Canada) as an archive.

One such ice core, known as the West Antarctic Ice Sheet Divide (WAIS Divide) core was drilled to a depth of more than two miles (3,405 meters), and much of it was analyzed in the DRI Ultra-Trace Laboratory for more than 30 different elements and chemical species.

The coal waste contains chemical elements that can be ionised by the biofertiliser, making nutrients which are essential to growth available for uptake by the plants.

His team searched for 18 chemical elements in SDSS J0018 - 0939, a dim orange star in the constellation Cetus that emits less light than the sun.

In February the world was treated to a transcontinental eureka moment: Scientists from the Lawrence Livermore National Laboratory in California and the Joint Institute for Nuclear Research in Russia announced they had discovered two new chemical elements.

«Blue holes bring forgotten chemical element back on stage: UNIGE chemists have uncovered a new bond formation for chemical catalysis that is based on antimony.

These enhanced capabilities will allow scientists to observe the gas squeezed within galaxy clusters, determining its composition, motion, and turbulence, all for a better understanding of how chemical elements evolved within the universe and what role interstellar gases play in star and galaxy formation.

Dr. Walter Voit led the team that created «Polycraft World,» an adaptation or «mod» for «Minecraft» that allows players to incorporate the properties of chemical elements and compounds into game activities.

Of course, my heart is beating more for nuclear physics than any other field, and one of the main questions for me is «How many chemical elements are there?»

The privately funded Space Studies Institute, which he ran in Princeton, built working models of «mass drivers», electromagnetic launchers for putting payloads into lunar orbit, and commissioned investigations into the most efficient chemical reactions for extracting oxygen and other useful elements from the Moon.

If this element — with the chemical code P — is lacking in other parts of the cosmos, then it could be difficult for extra-terrestrial life to exist.

The scientists incorporated a variety of physical processes in the calculations, including three that are considered particularly important for the development of the visible universe: first, the condensation of matter into stars, second, their further evolution when the surrounding matter is heated by stellar winds and supernova explosions and enriched with chemical elements, and third, the feedback of supermassive black holes that eject massive amounts of energy into the universe.

Their discovery could aid in the synthesis of new «radiotracers» — chemical compounds that contain a radioactive form, or isotope, of an element — for use with a noninvasive, high - resolution 3 - D medical imaging technology known as PET (positron emission tomography) scanning.

Although carbon has been subjected to far more study than all other elements put together, the buckminsterfullerene hollow - cage structure, recently proposed to account for the exceptional stability of the C60 cluster, has shed a totally new and revealing light on several important aspects of carbon's chemical and physical properties that were quite unsuspected and others that were not previously well understood.

In turn, electrons are responsible for the chemical properties of the elements, hence the number of protons in the nucleus fully specifies this atom as a chemical element.

Ren's group isn't the first to study the new material, which has not been named but is referred to in the Nano Energy paper as simply MgAgSb - based materials, using the chemical names for the elements used to create it.

Scientists have, for the first time, traced the nanoparticles taken up from the soil by crop plants and analysed the chemical states of their metallic elements.

The most recent books he has edited are Nanotechnology for the Energy Challenge and The Chemical Element: Chemistry's Contribution to Our Global Future.

«Such galaxies, which have remained dormant for most of their lives, are believed to contain the chemical elements forged a few minutes after the Big Bang.By measuring the relative number of hydrogen and helium atoms in the Little Cub we might be able to learn more about what made up the Universe in the moments after it began 13.7 billion years ago,» Cooke added.

James Lawler, a University of Wisconsin — Madison professor of physics known for devising innovative techniques to measure the chemical elements in the sun and other stars, has been named the recipient of the 2017 Laboratory Astrophysics Prize by the American Astronomical Society.

It proved the perfect container for a set of flash cards that she was using to learn properties of the chemical elements.

Frederick Hawthorne is the director of the International Institute of Nano and Molecular Medicine at MU, and will be receiving the nation's highest honor for scientists.The University says the Institute «was created largely to facilitate Hawthorne's research» with the chemical element Boron.

The 3D NanoChemiscope, which was developed at Empa, not only maps samples with nanometre precision, but for the first time can also provide precise information about which chemical elements are arranged where in a sample.

Tennessine is in recognition of the contribution of the Tennessee region, including Oak Ridge National Laboratory, Vanderbilt University, and the University of Tennessee at Knoxville, to superheavy element research, including the production and chemical separation of unique actinide target materials for superheavy element synthesis at ORNL's High Flux Isotope Reactor (HFIR) and Radiochemical Engineering Development Center (REDC).

With the IDF money, Mariella has been able to obtain non-radioactive chemicals that act as surrogates for the radioactive isotopes of elements that are likely to contaminate a surface, and is planning to conduct tests.

Finally, the names for new chemical elements in English should allow proper translation into other major languages.

Decay fragments and new chemical elements were splattered onto an accumulating screen for later analysis by a mass spectrometer.

The new AquaDx chip will work with the hand - held MyDx portable analyzer to test for the presence of toxic chemicals or elements in water in about six minutes.

That is not enough time for stars containing heavy chemical elements to form and then transmit their light all the way to Earth.

He also discusses how the early stars seeded the cosmos with the chemical elements necessary for life.

Yet, the full star formation and enrichment history of a galaxy can be traced directly only if two key observables can be determined... ▽ More Red giant stars are perhaps the most important type of stars for Galactic and extra-galactic archaeology: they are luminous, occur in all stellar populations, and their surface temperatures allow precise abundance determinations for many different chemical elements.

The interdependence of atomic weights and chemical formulas that plagued determinations of atomic weight since the time of Dalton was still problematic for these elements.

They lived for only a million years before they exploded spectacularly, shooting the chemical elements accumulated inside their cores into space.