Sentences with phrase «contain chemical elements»

Stars and galaxies 12.9 billion light - years away contain chemical elements heavier than hydrogen, helium, lithium — and nickel.

«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.

Earlier work has shown that these rocks from Canada only contain chemical elements that directly precipitated from ocean water.

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.

sodium chloride A type of salt containing the chemical elements sodium and chlorine.

Not exact matches

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.

Vitamin B12 is the only vitamin that contains a trace element — cobalt — which gives this vitamin its chemical name — cobalamin — which is at the centre of its molecular structure.

Some ingredients from just one of the manufacturers we carry: — Recycled Rubber wood (clean, natural rubber wood recycled from rubber trees no longer able to produce latex); — Non-Chemical Preservative Wood (stabilized using a chemical - free kiln - drying process); — Non-Formaldehyde Glue (toys assembled using a non-formaldehyde glue in place of the traditional toxic wood glue); — Water Based Dye (non-toxic, water based dyes to add accent colors to products, containing no heavy metal elements such as lead, mercury, etc..)

Using a strict definition, a molecule does not contain ions in its chemical formula, although some types of molecules contain elements which can be ionized.

The smartly sourced elements are actually flame resistant so they contain no added retardant chemicals.

In a new study, Scripps Institution of Oceanography at the University of California San Diego Professor James Day and colleagues examined the chemical composition of zinc and other volatile elements contained in the green - colored glass, called trinitite, which were radioactive materials formed under the extreme temperatures that resulted from the 1945 plutonium bomb explosion.

Because a majority of the herbs used in TCM have not been extensively evaluated, the current research trend is toward the isolation and elucidation of the chemical structure of all elements contained in the herbs.

Radioactive waste is waste type containing radioactive chemical elements that does not have a practical purpose.

Previous studies have shown that fracking fluids contain high levels of salts, barium and radioactive elements, in addition to human - made chemicals added in the process of hydraulic fracturing.

Many freshwater and ocean fish contain dangerous elements such as mercury, industrial chemicals such as dioxins and pesticides such as DDT that are linked to cancer, reproductive effects or other health problems.

While mostly copper, the blade contains small concentrations of lead, arsenic, silver and more than a dozen other chemical elements.

In the famous Miller - Urey experiment of the 1950s, researchers produced a rich soup of amino acids by running an electric current through flasks containing elements of a primitive Earth, thus showing how precursor chemicals could have formed here.

Such evidence would include unusual rotational wobbles, which would result from the disturbance of having swallowed a planet, or unusual chemical signatures — containing elements that stars wouldn't have produced themselves.

Thus, young stars contain larger amounts of heavy elements produced by dozens or hundreds of supernovae, while the oldest stars have a very simple chemical makeup with few of the heavy elements.

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.

Hazen began his case in deep, deep time, 4.6 billion years ago, in the pre-stellar dust that contained all the chemical elements but no more than a dozen minerals.

Furthermore, stars in the most distant galaxies contain heavy chemical elements.53 Therefore, according to the big bang theory, several generations of stars must have preceded those stars.

The first generation should contain only hydrogen, helium, and a trace of lithium — the only chemical elements a big bang could produce.

Actually, the most distant stars, galaxies, and quasars that can be analyzed contain some of these heavy chemical elements.25

This suggests that the Galaxy originally contained little of the so - called heavy elements (elements beyond helium in the periodic table); and the variation of chemical composition with age suggests that heavy elements must have been produced more rapidly in the Galaxy's early history than now.

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

Flavonoids are polyphenolic compounds that contain chemical structural elements responsible for antioxidant activities in the body.

The chemical composition of goji is more complex, and the major contain: Protein, amino acids, trace elements, carbohydrates, fat, fatty acids, terpenoid, steroid, vitamins, pigments category alkaloids.

Plastic bottled water isn't a good alternative, as it contains leached plastic chemicals like BPA as well as other harmful elements.

Even potted plants can contain harmful chemicals, plus the pet owners would rather not let the cat damage these elements of their home décor.

For example, according to Apple, an iPhone 6 contains.01 ounces worth of rare earth elements (17 chemical elements essential to today's technology) in components that include the handset's speakers and touchscreen display.

Although the exact chemical composition depends on the type of coal burned, all coal ash contains concentrated amounts of toxic elements, including arsenic, lead, and mercury.

Since the average home in North America contains dozens if not hundreds of harmful chemicals and heavy metals, it is important to be informed about where these toxic elements may be hiding so you can remove and replace them quickly.