Sentences with phrase «of chemical elements»

By looking at how concentrations of chemical elements in the sediment change with depth, the researchers can develop a continuous record of how much surface runoff poured into the lake.

Then there is a group of tests that analyzes the concentration of chemical elements like calcium, phosphorus, sodium, potassium and chloride in the blood.

In one way or another, stars created most of the chemical elements.

«There is abundant evidence of design in the properties of the chemical elements alone,» he argued, especially as they combine to make the unique substance we call water.

These three chemical elements are interesting because they belong to the subset of chemical elements heavier than carbon and nitrogen which form the bulk of all the rocky planets.

A: All matter is composed of the chemical elements on the periodic table — even the supposedly man - made ones.

The human body is a composition of chemical elements that we find elsewhere in nature.

In chemistry and physics, an atom is the smallest particle of a chemical element that retains its chemical properties.

To create plasma for their experiments, the researchers send a high - power laser through a hot gas of the chemical element lithium.

And all living things rely on the same handful of chemical elements.

These include a more capable framework for calculating the cyclical flow of chemical elements and compounds like carbon, nitrogen, and water in the environment.

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

Most, perhaps even all, of the chemical elements heavier than iron are forged in the chaos of the explosion.

I passed my science exams years ago by memorising formulae, learning the periodic table of chemical elements, and being good at algebra.

This is a close - up of the head region of the Alalcomenaeus fossil specimen with the superimposed colors of a microscopy technique revealing the distribution of chemical elements in the fossil.

They are the cosmic origin of chemical elements like carbon, oxygen, silicon, and iron, of which Earth and our bodies are made of, and which are bred in massive stars over millions of years or freshly fused in the stellar explosion.

«The abundance of some chemical elements in the stars in the external regions of the Milky Way halo — explains Giuseppina Battaglia, astrophysicist at the IAC and first author of the article — was found to be surprisingly different from the information we had concerning the inner regions of the halo».

The various types of chemical elements in tea tree oil are called terpenes.

Because here, it is called the galactic habitable zone and contains just the right concentrations of chemical elements needed to support life as well being away from dangerous radiation.

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?

Genes are just part of the bigger picture of chemical elements and physical wave - particles framed according to mathematical principles that we are only just beginning to understand.

In addition, the term is used in a broader sense to cover a world - view on a wide variety of topics, including chemical evolution as an alternative term for abiogenesis or for nucleosynthesis of chemical elements, galaxy formation and evolution, stellar evolution, spiritual evolution, technological evolution and universal evolution, which seeks to explain every aspect of the world in which we live.

To gather more information, researchers used an X-ray fluorescence spectrometry device, which produces grayscale images of the chemical elements of the underlying paint that are characteristic of the pigments used.

Observations of Nova Centauri 2013 made using telescopes at ESO's La Silla Observatory, and near Santiago in Chile, help to explain the mystery of why many young stars seem to have more of this chemical element than expected.

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.

To accomplish this, they used compounds of the chemical element ruthenium as a catalyst.

However, «the CT scan didn't show the outline of the nervous systems unambiguously enough,» Strausfeld said, «while a scanning laser technique mapping the distribution of chemical elements showed iron deposits outlining the nervous system almost as convincingly but with minor differences.»

Using an array of chemical elements detected in stars as proxies for their «DNA», stellar histories can be tracked around the galaxy, mapping a family tree

The catalyst was synthesised using porous crystals called metal - organic frameworks which allow precise spatial control of the chemical elements.

Now, however, a team of scientists led by California State University, Northridge (CSUN) chemistry professor Maosheng Miao, and including University at Buffalo chemistry professor Eva Zurek, has provided a theoretical explanation of how helium may be capable of forming stable compounds — the myriad combinations of chemical elements that create all kinds of materials.

The study of the effects of climate change in this area and historical variation of chemical elements in trees can highly contribute to discover the potential effects that could stand many of the coniferous forests in the 21st century, according to the authors.

An animal's diet changes the isotopes — or versions of chemical elements — found in their bones and tooth enamel, giving researchers a clue as to what they were eating.

Work by Cardiff University astronomers suggests there may be a cosmic lack of a chemical element essential to life.

«Plants supply biomass which forms the beginning of the food chain, but insects act as pollinators and soil organisms increase soil fertility through the breakdown and retention of chemical elements such as phosphorus.

And his lab last summer published a paper in the Proceedings of the National Academy of Sciences establishing tin telluride with the addition of the chemical element indium as a material capable of converting waste heat to electricity.

For several decades Andrea Dietrich, who trains utility staff and managers around the U.S. and across the globe on how to use sensory analysis to detect changes in water quality, has worked in the area of assessing taste, odor, and visual perception of chemical elements in water.

REEs are a series of chemical elements found in the Earth's crust that are widely used because of their special properties.

The relative abundances of the chemical elements provide significant clues regarding their origin.

On 2nd February 2004, the team of researchers announced the creation of the chemical element 115 [4], giving it a placeholder name Ununpentium with the symbol Uup [1].

Continued infrared monitoring by an array of ground - based telescopes found features in the infrared spectra indicative of chemical elements produced by the neutron capture process.

The Imager has a spectrograph that separates light out into its constituent colors, and these so - called spectra bear markers of the chemical elements in a planet's atmosphere.

Water, a substance composed of the chemical elements hydrogen and oxygen and existing in gaseous, liquid,...

It begins with the mining of rare earth minerals, a collection of chemical elements manufactured mostly in China.

A form of a chemical element having a different atomic mass to other isotopes of that same element, but almost indentical chemical properties.

Isotopes of chemical elements are distinguished by different atomic weights.

Perhaps the most famous anthropic coincidence was discovered in the 1930s, when it was found that except for a certain very precise relationship satisfied by the energy levels of the Carbon «12 nucleus, most of the chemical elements in nature would have occurred in only very minute quantities, greatly dimming the prospects of life.

The periodic table of the chemical elements is a tabular method of displaying the chemical elements, first devised in 1869 by the Russian chemist Dimitri Mendeleev.